KIND OF DUPLEX-SUPPLY KITCHEN AIR-CONDITIONING SYSTEM WITH A TANK SEPARATED FROM AN AIR CONDITIONER

Abstract

A duplex-supply kitchen air-conditioning system includes an enclosure, an air-conditioner cooling system, and a thermal storage tank, of which, the air-conditioner cooling system consists of a compressor, a water-side heat exchanger, a filter, a throttle valve, an interior-side heat exchanger, an interior ventilator, a microcomputer electronic thermostat, a temperature sensor, a high-voltage switch, a low-voltage switch, and a controller. Water outlet “A” and water inlet “A” are set near the water-side heat exchanger, and water outlet “B” and water inlet “B” are set near the thermal storage tank. The compressor, water-side heat exchanger, condenser, microcomputer electronic thermostat, and controller are inside the left chamber of enclosure; and the interior-side heat exchanger, throttle valve, filter, and interior ventilator are inside the right chamber of enclosure.

Description

TECHNICAL FIELD

This invention is a kind of duplex-supply kitchen air-conditioning system, and in particular, it is related to a kind of duplex-supply kitchen air-conditioning system with a tank separated from an air conditioner. It falls under the field of kitchen air-conditioning technology.

BACKGROUND TECHNOLOGY

To improve the operating environment of kitchen to higher levels of comfort and pleasure, air conditioners for small kitchens are emerging. At present, kitchen air conditioners basically adopt air-cooled units at the condensation side. This is mainly because: water-cooled units each needs a cooling tower despite operational steadiness and high EER, occupying larger space and costing more in initial investment; and they are out of commission at low temperature in winter.

Specific to the above situation, “air-conditioning+hot water” duplex-supply kitchen air-conditioning systems come out. Examples are given below:

The patent application (application publication number: CN 102042713 A; application number: 2009101102158) for the title of invention “dual-accumulator air-conditioner hot water unit” makes public a kind of dual-accumulator air-conditioner hot water unit, which is used in combination with an air-conditioning unit and a water heater and integrates cooling, dehumidification, and domestic water supply. However, its “refrigeration compressor, condenser, evaporator, medium-temperature hot water tank, high-temperature hot water tank, and micro water pump all are mounted in the case to fit together”, so it's big in volume and unsuitable for small kitchens. Its hot water tank cannot be flexibly mounted in other rooms needing hot water like bathroom or washroom, which is inconvenient in use of hot water.

The patent application (application publication number: CN 109114716 A; application number: 2018111177910) for the title of invention “a kind of all-in-one kitchen air-conditioner air-energy range hood” makes public a kind of all-in-one kitchen air-conditioner air-energy range hood, which makes use of water circulation to exchange and transfer heat and to provide hot water and integrates cooling, dehumidification, and domestic water supply. However, its “case is provided with a heat exchanger tank, a cold exchanger tank, and an air-conditioner cooling cycle component”, so it's big in volume and unsuitable for small kitchens. Its hot water tank cannot be flexibly mounted in other rooms needing hot water.

The patent application (application publication number: CN 108895512 A; application number: 2018108943149) for the title of invention “a kind of solar triplex-supply installation” makes public a multi-function solar triplex-supply installation integrating hot water supply, heating, cooling. Its outdoor heat exchanger and condenser are inside the water tank. Due to restrictions on the length of cooling tube from compressor to condenser, its overall structure shows no essential difference from the overall structure of which the compressor, condenser, and water tank are together in one enclosure. That means its hot water tank cannot be flexibly mounted in other rooms needing hot water.

DETAILS OF INVENTION

In view of deficiencies (unsuitability for a small kitchen due to big enclosure volume and inconvenience in hot water use caused by impossibility of flexibly mounting the hot water tank in another room) in existing technologies for the above duplex-supply kitchen air-conditioning system, this invention aims to provide a kind of duplex-supply kitchen air-conditioning system with a tank separated from an air conditioner, which has a small enclosure suitable for small kitchens and has a hot water tank that could be flexibly mounted in another room for ease of hot water use.

To achieve the above purpose, this invention adopts the following technical solution: A kind of duplex-supply kitchen air-conditioning system with a tank separated from an air conditioner, suitable for a kitchen, comprises an enclosure, an air-conditioner cooling system, and a thermal storage tank. The said air-conditioner cooling system consists of a compressor, a water-side heat exchanger, a filter, a throttle valve, an interior-side heat exchanger, an interior ventilator, a microcomputer electronic thermostat, a temperature sensor, a high-voltage switch, a low-voltage switch, and a controller. The said compressor, high-voltage switch, water-side heat exchanger, filter, throttle valve, interior-side heat exchanger, and low-voltage switch are connected in succession by cooling tubes, and the low-voltage switch is connected to the compressor by one cooling tube, which forms a coolant circulation loop.

This kitchen air-conditioning system, as a whole, is divided into two parts: one part is the enclosure with the air-conditioner cooling system inside; the other part is the thermal storage tank. The said thermal storage tank takes advantage of using or discharging domestic hot water, into which cooling water change, to keep the water from water-side heat exchanger within a reasonable range of temperature. Even without a cooling tower, it could make the high-temperature high-pressure gaseous coolant inside water-side heat exchanger cool down to a certain supercooling degree which could ensure the throttle valve functioning even at big fluctuations in ambient temperature.

The said water-side heat exchanger is provided with a water outlet A and a water inlet A on one side. The said thermal storage tank is provided with a water outlet B and a water inlet B on one side. The said water outlet A and water inlet B are connected by a water tube; the said water outlet B and water inlet A are connected by a water tube. The water tube between water outlet B and water inlet A is provided with a micro water pump. The air-conditioner cooling system ensures the unit's steady operation of high efficiency and lowers the temperature and humidity in the kitchen. Meanwhile, the thermal storage tank supplies domestic hot water. Thus, the duplex-supply kitchen air-conditioning system of air-conditioner cooling system plus thermal storage tank is formed.

The said enclosure is provided with a lengthwise partition in the middle part. The said lengthwise partition divides the enclosure into its left and right chambers, of which, the right chamber is provided with a sidewise partition in the middle part. The said sidewise partition is the bottom of enclosure upper-right chamber and is the top of enclosure lower-right chamber.

The said compressor lies in the back underpart of enclosure left chamber, with its bottom fixed to the enclosure bottom. The said water-side heat exchanger and condenser lie in the front underpart of enclosure left chamber, with the former's bottom fixed to the enclosure bottom. The said microcomputer electronic thermostat is fixed to the left sidewall of enclosure left chamber. The said high-voltage switch lies on the cooling tube from enclosure left chamber to compressor and water-side heat exchanger. The said low-voltage switch lies on the cooling tube from enclosure left chamber to interior-side heat exchanger and compressor. The said controller is fixed to the inner sidewall of enclosure left chamber.

The said interior-side heat exchanger and evaporator recline in the upperpart of enclosure right chamber, above sidewise partition. The said throttle valve lies under the interior-side heat exchange and in the enclosure lower-right chamber. The said filter lies in the enclosure lower-right chamber, right under the throttle valve. The said interior ventilator is fixed to the enclosure lower-right chamber.

The said thermal storage tank is provided with an automatic make-up water valve (product model: AF0522A) at its topside. The automatic make-up water valve will be switched on to allow automatic water make-up from tap-water pipe, if the water level inside thermal storage tank drops to a certain degree because of hot water discharge, and will be switched off automatically when water make-up finishes.

The said thermal storage tank is provided with a domestic hot water outlet tube near its top on one side. The said domestic hot water outlet tube is provided with an electric valve (product model: Q41F-15), which could be switched on to release hot water for use when the water temperature inside thermal storage tank reaches a set value. The said temperature sensor (product model: PT-100) lies beside the electric valve.

The said thermal storage tank is provided with a blowdown valve (product model: DN15) near its bottom on one side. The blowdown valve could be switched on to release deposited sewage, if any, from the thermal storage tank.

The said thermal storage tank is provided with an auxiliary electric heater (product model: EHC15/20-3) at its bottom on one side, over the blowdown valve. The auxiliary electric heater is automatically enabled of heating-up by the controller when the water temperature inside thermal storage tank is below the set value, and it is disabled when the set value is reached.

The said compressor, interior ventilator, micro water pump, automatic make-up water valve, electric valve, blowdown valve, microcomputer electronic thermostat, high-voltage switch, and low-voltage switch all are electrically connected to the controller.

The working processes of air-conditioner cooling system and water-side cooling system are respectively detailed below:

(1) The Air-Conditioner Cooling System Operates for Cooling in Carnot Cycle:

The low-temperature low-pressure gaseous coolant enters the compressor that outputs the high-temperature high-pressure gaseous coolant. Through the water-side heat exchanger, the coolant is condensed into a high-temperature high-pressure liquid state. The liquid coolant is filtered by the filter, in order not to block the throttle valve, and then is changed at the throttling device into a low-temperature low-pressure two-phase flow. The two-phase flow enters the interior evaporator and is vaporized into a low-temperature low-pressure gaseous state, which goes back to the compressor that outputs the high-temperature high-pressure gaseous coolant. Things repeat like this to convey the cold source to the room, thus achieving the purpose of cooling. If the ultrahigh/ultralow voltage in the cooling system reaches the set value for protection for some reason during this cycle, then the high voltage switch or low voltage switch will immediately cut off power supply, and the controller will give a command of shutdown to protect the cooling system from being destroyed.

(2) The Water-Side Cooling System Operates for Hot Water Supply in Cycle:

First, the micro water pump is enabled to feed water from thermal storage tank to water-side heat exchanger. Second, the water-side cooling system is enabled. As a result of absorbing heat from water, the high-temperature high-pressure gaseous coolant inside water-side heat exchanger cools down and changes into a high-temperature high-pressure liquid state to a certain supercooling degree that could ensure the unit's steady operation. The water inside water-side heat exchanger heats up after absorbing heat and goes back to the thermal storage tank. Things repeat like that.

Setting water temperature for the thermal storage tank and switching on/off the domestic hot water electric valve are controlled by the microcomputer electronic thermostat. When the temperature sensor senses the water temperature reaches the set value (e.g., 35° C.), the electric valve is switched on, making domestic hot water available or allowing it to flow into the user-defined hot water storage tank on standby. The automatic make-up water valve will be switched on to allow automatic water make-up from tap-water pipe, if the water level inside thermal storage tank drops to a certain degree because of hot water discharge, and will be switched off automatically when water make-up finishes.

When the water temperature inside thermal storage tank is below some set value (e.g., 30° C.), the microcomputer electronic thermostat will give a command to switch off the electric valve. Domestic hot water cannot be used, but hot water inside user-defined hot water storage tank is available. The auxiliary electric heater will be enabled of heating up, if the water inside hot water storage tank does not reach the required operating temperature, and will be disabled automatically when the required value is reached.

Compared with existing technologies, this invention has the following beneficial effects: It provides a kind of duplex-supply kitchen air-conditioning system with a tank separated from an air conditioner, realizing a small enclosure volume suitable for a small kitchen as well as the possibility of flexibly mounting the hot water tank in other rooms like bathroom or washroom for ease of hot water use. Besides, it provides a cold source to lower the kitchen temperature and supplies domestic water, achieving the “dual purpose of water”, inconvenient and healthy. The unit operates steadily. There is no cooling tower, saving room at mounting. The system has remarkable effects in environmental protection and energy saving.

DESCRIPTION OF FIGURES

FIG. 1 shows the assembly drawing of air-conditioner cooling system and thermal storage tank in this invention;

FIG. 2 shows the front view of enclosure interior of air-conditioner cooling system;

FIG. 3 shows the left view of enclosure interior of air-conditioner cooling system;

FIG. 4 shows the right view of enclosure interior of air-conditioner cooling system;

FIG. 5 shows the top view of enclosure interior of air-conditioner cooling system;

FIG. 6 shows the schematic circuits of this invention (wire map of all parts of air-conditioner cooling system and thermal storage tank).

Notes to symbols on the figures: enclosure—1; lengthwise partition—101; enclosure left chamber—102; enclosure right chamber—103; sidewise partition—104; thermal storage tank—2; water outlet B—201; water inlet B—202; compressor—3; water-side heat exchanger—4; water outlet A—401; water inlet A—402; filter—5; throttle valve—6; interior—side heat exchanger—7; interior ventilator—8; microcomputer electronic thermostat—9; temperature sensor—10; high—voltage switch—11; low-voltage switch—12; controller—13; micro water pump—14; automatic make—up water valve—15; electric valve—16; blowdown valve—17; auxiliary electric heater—18.

MODE OF IMPLEMENTING THE INVENTION

The technical solution in embodiments of this invention will be plainly and completely described in combination with figures. Obviously, the said embodiments are not all but some of the embodiments of this invention. Based on embodiments of this invention, all other embodiments that an ordinary technician in this field obtains without doing creative work belong in the scope of protection for this invention.

As shown in FIGS. 1-6, a kind of duplex-supply kitchen air-conditioning system with a tank separated from an air conditioner is suitable for a kitchen. As shown in FIGS. 1-5, it comprises an enclosure—1, an air-conditioner cooling system, and a thermal storage tank—2. The said air-conditioner cooling system consists of a compressor—3, a water-side heat exchanger—4, a filter—5, a throttle valve—6, an interior—side heat exchanger—7, an interior ventilator—8, a microcomputer electronic thermostat—9, a temperature sensor—10, a high—voltage switch—11, a low-voltage switch—12, and a controller—13. The said compressor—3, high—voltage switch—11, water-side heat exchanger—4, filter—5, throttle valve—6, interior—side heat exchanger—7, and low-voltage switch—12 are connected in succession by cooling tubes, and the low-voltage switch—12 is connected to the compressor—3 by one cooling tube, which forms a coolant circulation loop.

As shown in FIGS. 1 and 6, this kitchen air-conditioning system, as a whole, is divided into two parts: one part is the enclosure—1 with the air-conditioner cooling system inside; and the other part is the thermal storage tank—2. The said thermal storage tank—2 takes advantage of using or discharging domestic hot water, into which cooling water change, to keep the water from water-side heat exchanger—4 within a reasonable range of temperature. Even without a cooling tower, it could make the high-temperature high-pressure gaseous coolant inside water-side heat exchanger —4 cool down to a certain supercooling degree which could ensure the throttle valve—6 functioning even at big fluctuations in ambient temperature.

The said water-side heat exchanger—4 is provided with a water outlet A—401 and a water inlet A—402 on one side. The said thermal storage tank—2 is provided with a water outlet B—201 and a water inlet B—202 on one side. The said water outlet A—401 and water inlet B—202 are connected by a water tube; the said water outlet B—201 and water inlet A—402 are connected by a water tube. The water tube between water outlet B—201 and water inlet A—402 is provided with a micro water pump—14. The air-conditioner cooling system ensures the unit's steady operation of high efficiency and lowers the temperature and humidity in the kitchen. Meanwhile, the thermal storage tank—2 supplies domestic hot water. Thus, the duplex-supply kitchen air-conditioning system of air-conditioner cooling system plus thermal storage tank—2 is formed.

As shown in FIG. 2: The said enclosure—1 is provided with a lengthwise partition—101 in the middle part. The said lengthwise partition—101 divides the enclosure—1 into its left chamber—102 and right chamber—103, of which, the right chamber—103 is provided with a sidewise partition—104 in the middle part. The said sidewise partition—104 is the bottom of enclosure—1 upper-right chamber and is the top of enclosure—1 lower-right chamber.

As shown in FIGS. 2, 3, and 5: The said compressor—3 lies in the back underpart of enclosure left chamber—102, with its bottom fixed to the enclosure—1 bottom. The said water-side heat exchanger—4 and condenser lie in the front underpart of enclosure left chamber—102, with the former's bottom fixed to the enclosure—1 bottom. The said microcomputer electronic thermostat—9 is fixed to the left sidewall of enclosure left chamber—102. The said high-voltage switch—11 lies on the cooling tube from enclosure left chamber—102 to compressor—3 and water-side heat exchanger—4. The said low-voltage switch—12 lies on the cooling tube from enclosure left chamber—102 to interior-side heat exchanger—7 and compressor—3. The said controller—13 is fixed to the inner sidewall of enclosure left chamber—102.

As shown in FIGS. 2, 4, and 5: The said interior-side heat exchanger—7 and evaporator recline in the upperpart of enclosure right chamber—103, above sidewise partition—104. The said throttle valve—6 lies under the interior-side heat exchanger—7 and in the enclosure—1 lower-right chamber. The said filter—5 lies in the enclosure—1 lower-right chamber, right under the throttle valve—6. The said interior ventilator—8 is fixed to the enclosure—1 lower-right chamber.

As shown in FIG. 1: The said thermal storage tank—2 is provided with an automatic make-up water valve—15 (product model: AF0522A) at its topside. The automatic make-up water valve—15 will be switched on to allow automatic water make-up from tap-water pipe, if the water level inside thermal storage tank—2 drops to a certain degree because of hot water discharge, and will be switched off automatically when water make-up finishes.

As shown in FIG. 1: The said thermal storage tank—2 is provided with a domestic hot water outlet tube near its top on one side. The said domestic hot water outlet tube is provided with an electric valve—16 (product model: Q41F-15), which could be switched on to release hot water for use when the water temperature inside thermal storage tank—2 reaches a set value. The said temperature sensor—10 (product model: PT-100) lies beside the electric valve—16.

As shown in FIG. 1, the said thermal storage tank—2 is provided with a blowdown valve—17 (product model: DN15) near its bottom on one side. The blowdown valve—17 could be switched on to release deposited sewage, if any, from the thermal storage tank—2.

As shown in FIG. 1, the said thermal storage tank—2 is provided with an auxiliary electric heater—18 (product model: EHC15/20-3) at its bottom on one side, over the blowdown valve—17. The auxiliary electric heater—18 is automatically enabled of heating-up by the controller—13 when the water temperature inside thermal storage tank—2 is below the set value, and it is disabled when the set value is reached.

The said compressor—3, interior ventilator—8, micro water pump—14, automatic make-up water valve—15, electric valve—16, blowdown valve—17, microcomputer electronic thermostat—9, high-voltage switch—11, and low-voltage switch—12 all are electrically connected to the controller—13.

The working processes of air-conditioner cooling system and water-side cooling system are respectively detailed below:

(1) The Air-Conditioner Cooling System Operates for Cooling in Carnot Cycle:

The low-temperature low-pressure gaseous coolant enters the compressor—3 that outputs the high-temperature high-pressure gaseous coolant. Through the water-side heat exchanger—4, the coolant is condensed into a high-temperature high-pressure liquid state. The liquid coolant is filtered by the filter—5, in order not to block the throttle valve—6, and then is changed at the throttling device into a low-temperature low-pressure two-phase flow. The two-phase flow enters the interior evaporator and is vaporized into a low-temperature low-pressure gaseous state, which goes back to the compressor that outputs the high-temperature high-pressure gaseous coolant. Things repeat like this to convey the cold source to the room, thus achieving the purpose of cooling. If the ultrahigh/ultralow voltage in the cooling system reaches the set value for protection for some reason during this cycle, then the high-voltage switch—11 or low-voltage switch—12 will immediately cut off power supply, and the controller—13 will give a command of shutdown to protect the cooling system from being destroyed.

(2) The Water-Side Cooling System Operates for Hot Water Supply in Cycle:

As shown in FIG. 6: First, the micro water pump—14 is enabled to feed water from thermal storage tank—2 to water-side heat exchanger—4; second, the water-side cooling system is enabled. As a result of absorbing heat from water, the high-temperature high-pressure gaseous coolant inside water-side heat exchanger—4 cools down and changes into a high-temperature high-pressure liquid state to a certain supercooling degree that could ensure the unit's steady operation. The water inside water-side heat exchanger—4 heats up after absorbing heat and goes back to the thermal storage tank—2. Things repeat like that.

Setting water temperature for the thermal storage tank—2 and switching on/off the domestic hot water electric valve—16 are controlled by the microcomputer electronic thermostat—9. When the temperature sensor—10 senses the water temperature reaches the set value (e.g., 35° C.), the electric valve—16 is switched on, making domestic hot water available or allowing it to flow into the user-defined hot water storage tank (not shown) on standby. The automatic make-up water valve—15 will be switched on to allow automatic water make-up from tap-water pipe if the water level inside thermal storage tank—2 drops to a certain degree because of hot water discharge, and will be switched off automatically when water make-up finishes.

When the water temperature inside thermal storage tank—2 is below some set value (e.g., 30° C.), the microcomputer electronic thermostat—9 will give a command to switch off the electric valve—16. Domestic hot water cannot be used, but hot water inside user-defined hot water storage tank is available. The auxiliary electric heater—18 will be enabled of heating up, if the water inside hot water storage tank does not reach the required operating temperature, and will be disabled automatically when the required value is reached.

The above embodiments are just a preferred mode of implementing this invention. Changes and replacements that a technician in this field usually does in the technical solution of this invention should be covered in the scope of protection by this invention.

Claims

1. A duplex-supply kitchen air-conditioning system with a tank separated from an air conditioner: suitable for use in a kitchen, it comprises an enclosure, an air-conditioner cooling system, and a thermal storage tank, of which, the air-conditioner cooling system consists of a compressor, a water-side heat exchanger, a filter, a throttle valve, an interior-side heat exchanger, an interior ventilator, a microcomputer electronic thermostat, a temperature sensor, a high voltage switch, a low voltage switch, and a controller; the said compressor, high-voltage switch, water-side heat exchanger, filter, throttle valve, interior-side heat exchanger, and low-voltage switch are connected in succession by cooling tubes, and the low-voltage switch is connected to the compressor by one cooling tube, which forms a coolant circulation loop; wherein this kitchen air-conditioning system, as a whole, is divided into two parts: one part is the enclosure with the air-conditioner cooling system inside; the other is the thermal storage tank;the said water-side heat exchanger is provided with a water outlet A and a water inlet A on one side; the said thermal storage tank is provided with a water outlet B and a water inlet B on one side; the said water outlet A and water inlet B are connected by a water tube; the said water outlet B and water inlet A are connected by a water tube; the water tube between water outlet B and water inlet A is provided with a micro water pump;the said enclosure is provided with a lengthwise partition in the middle part; the said lengthwise partition divides the enclosure into left and right chambers, of which, the right chamber is provided with a sidewise partition in the middle part; the said sidewise partition is the bottom of enclosure upper-right chamber and is the top of enclosure lower-right chamber;the said compressor lies in the back underpart of enclosure left chamber, with its bottom fixed to the enclosure bottom; the said water-side heat exchanger and condenser lie in the front underpart of enclosure left chamber, with the former's bottom fixed to the enclosure bottom; the said microcomputer electronic thermostat is fixed to the left sidewall of enclosure left chamber; the said high-voltage switch lies on the cooling tube from enclosure left chamber to compressor and water-side heat exchanger; the said low-voltage switch lies on the cooling tube from enclosure left chamber to interior-side heat exchanger and compressor; the said controller is fixed to the inner sidewall of enclosure left chamber;the said interior-side heat exchanger and evaporator recline in the upperpart of enclosure right chamber above sidewise partition; the said throttle valve lies under the interior-side heat exchange and in the enclosure lower-right chamber; the said filter lies in the enclosure lower-right chamber, right under the throttle valve; the said interior ventilator is fixed to the enclosure lower-right chamber.

2. The duplex-supply kitchen air-conditioning system with the tank separated from the air conditioner, according to claim 1, wherein the said thermal storage tank is provided with an automatic make-up water valve at its topside.

3. The duplex-supply kitchen air-conditioning system with the tank separated from the air conditioner, according to claim 1, is characterized as follows: the said thermal storage tank is provided with a domestic hot water outlet tube near its top on one side; the said domestic hot water outlet tube is provided with an electric valve, which could be switched on to release hot water for use when the water temperature inside thermal storage tank reaches a set value; the said temperature sensor lies beside the electric valve.

4. The duplex-supply kitchen air-conditioning system with the tank separated from the air conditioner, according to claim 1, wherein the said thermal storage tank is provided with a blowdown valve near its bottom on one side; the blowdown valve could be switched on to release deposited sewage, if any, from the thermal storage tank.

5. The duplex-supply kitchen air-conditioning system with the tank separated from the air conditioner, according to claim 1, wherein the said thermal storage tank is provided with an auxiliary electric heater at its bottom on one side, over the blowdown valve; the auxiliary electric heater is automatically enabled of heating-up by the controller when the water temperature inside thermal storage tank is below the set value, and it is disabled when the set value is reached.

6. The duplex-supply kitchen air-conditioning system with the tank separated from the air conditioner, according to claim 1, wherein the said compressor, interior ventilator, micro water pump, automatic make-up water valve, electric valve, blowdown valve, microcomputer electronic thermostat, high-voltage switch, and low-voltage switch all are electrically connected to the controller.

7. The duplex-supply kitchen air-conditioning system with the tank separated from the air conditioner, according to claim 1, wherein the working processes of air-conditioner cooling system and water-side cooling system are respectively detailed below: (1) the air-conditioner cooling system operates for cooling in Carnot cycle:the low-temperature low-pressure gaseous coolant enters the compressor that outputs the high-temperature high-pressure gaseous coolant; through the water-side heat exchanger, the coolant is condensed into a high-temperature high-pressure liquid state; the liquid coolant is filtered by the filter, in order not to block the throttle valve, and then is changed at the throttling device into a low-temperature low-pressure two-phase flow; the two-phase flow enters the interior evaporator and is vaporized into a low-temperature low-pressure gaseous state, which goes back to the compressor that outputs the high-temperature high-pressure gaseous coolant; things repeat like this to convey the cold source to the room, thus achieving the purpose of cooling; if the ultrahigh/ultralow voltage in the cooling system reaches the set value for protection for some reason during this cycle, then the high-voltage switch or low-voltage switch will immediately cut off power supply, and the controller will give a command of shutdown to protect the cooling system from being destroyed;(2) the water-side cooling system operates for hot water supply in cycle:first, the micro water pump is enabled to feed water from thermal storage tank to water-side heat exchanger; second, the water-side cooling system is enabled; as a result of absorbing heat from water, the high-temperature high-pressure gaseous coolant inside water-side heat exchanger cools down and changes into a high-temperature high-pressure liquid state to a certain supercooling degree that could ensure the unit's steady operation; the water inside water-side heat exchanger heats up after absorbing heat and goes back to the thermal storage tank. Things repeat like that;setting water temperature for the thermal storage tank and switching on/off the domestic hot water electric valve are controlled by the microcomputer electronic thermostat; when the temperature sensor senses the water temperature reaches the set value, the electric valve is switched on, making domestic hot water available or allowing it to flow into the user-defined hot water storage tank on standby; the automatic make-up water valve will be switched on to allow automatic water make-up from tap-water pipe, if the water level inside thermal storage tank drops to a certain degree because of hot water discharge, and will be switched off automatically when water make-up finishes;when the water temperature inside thermal storage tank is below some set value, the microcomputer electronic thermostat will give a command to switch off the electric valve; domestic hot water cannot be used, but hot water inside user-defined hot water storage tank is available; the auxiliary electric heater will be enabled of heating up, if the water inside hot water storage tank does not reach the required operating temperature, and will be disabled automatically when the required value is reached.

8. The duplex-supply kitchen air-conditioning system with the tank separated from an air conditioner, according to claim 4, wherein the said thermal storage tank is provided with an auxiliary electric heater at its bottom on one side, over the blowdown valve. The auxiliary electric heater is automatically enabled of heating-up by the controller when the water temperature inside thermal storage tank is below the set value, and it is disabled when the set value is reached.