Patent Application
20230066155
The present disclosure relates to a vertical heat medium relay device.
A well-known heat medium relay device of an air-conditioning apparatus has a horizontal housing having a width greater than its height because the heat medium relay device is assumed to be installed above a ceiling. In such a housing of the heat medium relay device, pumps, heat exchangers, and a valve block, etc., are accommodated as main components in a lateral direction of the housing.
The pumps and the heat exchangers accommodated in the housing of the heat medium relay device are heavier than the other components. In addition, in the heat medium relay device, a heat exchanger mainly for heating and a heat exchanger mainly for cooling are provided.
These two heat exchangers are located laterally asymmetrically with reference to the center of the housing of the heat medium relay device (see, for example, Patent Literature 1).
Since the two heat exchangers are located laterally asymmetrically, the center of gravity of the heat medium relay device is displaced from a central portion of the heat medium relay device that is the center thereof in the lateral direction. As described above, the housing of the heat medium relay device is horizontally oriented. Thus, for example, in the case where the center of gravity of the heat medium relay device is displaced from the above central portion of the heat medium relay device, when the heat medium relay device is moved by a forklift or stacked on another heat medium relay device, there is a possibility that the heat medium relay device may be displaced or fall down from the other heat medium relay device.
The present disclosure is applied in view of the above circumstances, and relates to a heat medium relay device that can be moved safely.
A heat medium relay device according to an embodiment of the present disclosure includes: A heat medium relay device includes: a housing having a vertical cuboid shape, and having an interior partitioned into a first space, a second space above the first space, and a third space above the second space; a first heat exchanger provided in the second space to cause heat exchange to be performed between a primary heat medium and a secondary heat medium, the primary heat medium being in a cooled state and supplied from the outdoor unit; a first pump provided in the first space to pressurize the secondary heat medium subjected to the heat exchange at the first heat exchanger, and circulate the pressurized secondary heat medium between the first pump and at least one indoor unit; a second heat exchanger provided in the second space to cause heat exchange to be performed between the primary heat medium and the second heat medium, the primary heat medium being in a heated state and supplied from the outdoor unit; a second pump provided in the first space, and configured to pressurize the secondary heat medium subjected to the heat exchange at the second heat exchanger, and circulate the pressurized secondary heat medium between the second pump and the indoor unit; and a valve block provided in the third space, and including a plurality of valves to allow the secondary heat medium subjected to the heat exchange at the first heat exchanger and the secondary heat medium subjected to the heat exchange at the second heat exchanger to flow to the indoor unit, the valve block being lighter in weight than each of the first heat exchanger, the first pump, the second heat exchanger, and the second pump.
According to an embodiment of the present disclosure, the interior of the housing having a cuboid shape is partitioned by a first partition into the first space and the second space above the first space. The interior of the housing is further partitioned by a second partition into the second space and the third space above the second space. The first pump and the second pump are located in the first space. The first heat exchanger and the second heat exchanger are located in the second space. The valve block is lighter in weight than the first pump, the second pump, the first heat exchanger, and the second heat exchanger, and is thus located in the third space.
Because of the above layout, the center of gravity of the housing of the heat medium relay device is located at a low position even in the case where this center of gravity can be displaced from the center of the housing. As a result, this can prevent load collapse and the like of the heat medium relay device, so that a worker who transports the heat medium relay device can move it safely.
A vertical flow dividing controller that is a heat medium relay device according to each of the embodiments will be described with reference to the drawings. It should be noted that in each of figures, components that are the same as those in a previous figure or previous figures are denoted by the same reference signs, and after they are each explained once, their explanations will not be repeated, except when the necessity arises. The present disclosure can cover all combinations of configurations that can be combined among configurations explained regarding the embodiments described below.
As illustrated in
The flow dividing controller 2 includes a heat exchanger 4, a flow switching device 5, and a pump 6.
The heat exchanger 4 causes heat exchange to be performed between a primary heat medium supplied from the outdoor unit 1 and a secondary heat medium that is water or antifreeze that flows in the indoor unit 3. In Embodiment 1, the heat exchanger 4 includes a first plate heat exchanger 14a and a second plate heat exchanger 14b as illustrated in
The first plate heat exchanger 14a is used mainly in a cooling operation, and causes heat exchange to be performed between a cooled primary heat medium supplied from the outdoor unit 1 and a secondary heat medium. The second plate heat exchanger 14b is used in mainly in a heating operation, and causes heat exchange to be performed between a heated primary heat medium supplied from the outdoor unit 1 and a secondary heat medium.
Referring to
The pump 6 includes a first pump 13a and a second pump 13b as illustrated in
Next, a flow of the heat medium will be described.
First, a primary heat medium transfers heat to or receives heat from outside air in the outdoor unit 1, and flows into the flow dividing controller 2. Then, the heat exchanger 4 causes heat exchange to be performed between the primary heat medium that has flowed into the flow dividing controller 2 and a secondary heat medium. Thereafter, the primary heat medium flows out of the flow dividing controller 2, and then flows back to the outdoor unit 1.
Furthermore, by the pump 6, the secondary heat medium is circulated between the flow dividing controller 2 and the indoor unit 3. At this time, at the heat exchanger 4, the secondary heat medium is heated or cooled by the primary heat medium. The secondary heat medium flows to the at least one indoor unit 3 via the flow switching device 5, and then transfers heat to or receives heat from air of an air-conditioning target space, at a use-side heat exchanger in the at least one indoor unit 3. Thereafter, the secondary heat medium returns to the heat exchanger 4 via the flow switching device 5.
As illustrated in
The first pump 13a and the second pump 13b are located in the first space and laterally symmetrically with reference to a center line C that passes through a central portion of the housing 10 in the horizontal direction and that extends in the vertical direction.
The first plate heat exchanger 14a and the second plate heat exchanger 14b are located in the second space and laterally symmetrically with reference to the center line C.
A valve block 15 is located in the third space and laterally symmetrically with reference to the center line C. The valve block 15 is lighter in weight than each of the first pump 13a, the second pump 13b, the first plate heat exchanger 14a, and the second plate heat exchanger 14b. The valve block 15 includes a plurality of valves 15a. At the plurality of valves 15a, respective motors 15b are provided. Each of the valves 15a is provided in a flow switching circuit that causes a secondary heat medium subjected to heat exchange at the first plate heat exchanger 14a and a secondary heat medium subjected to heat exchange at the second plate heat exchanger 14b to flow to at least one indoor unit. In units of one indoor unit, a valve is provided at a pipe through which a secondary heat medium flows from the flow switching device 5 to the indoor unit 3, and another valve is provided at a pipe through which the secondary heat medium flows from the indoor unit 3 back to the flow switching device 5.
In the flow dividing controller 2 according to Embodiment 1, the interior of the housing 10 having a cuboid shape is partitioned by the first partition 11 into the first space and the second space. The interior of the housing 10 is further partitioned by the second partition 12 into the second space and the third space. The first pump 13a and the second pump 13b which are heavy are located in the first space. The first plate heat exchanger 14a and the second plate heat exchanger 14b which are heavy are located in the second space above the first space. The valve block 15 is located in the third space above the second space. The valve block 15 is lighter in weight than the first pump 13a, the second pump 13b, the first plate heat exchanger 14a, and the second plate heat exchanger 14b.
Therefore, in the flow dividing controller 2 of Embodiment 1, the first pump 13a and the second pump 13b which are relatively heavy are located in the first space. The first plate heat exchanger 14a and the second plate heat exchanger 14b which are heavy are located in the second space. The valve block 15 which is light in weight is located in the third space. As a result, the center of gravity of the housing 10 of the flow dividing controller 2 is located at a lower position. It is therefore possible for a forwarding agent to reduce the probability that for example, a cargo shifting will occur during transport of the flow dividing controller 2, and thus safety transport the flow dividing controller 2.
According to Embodiment 2, in the flow dividing controller 2 in the air-conditioning apparatus 100, the layout of the first pump 13a, the second pump 13b, the first plate heat exchanger 14a, and the second plate heat exchanger 14b in the flow dividing controller 2 according to Embodiment 1 is determined in relation to a control box 16.
Referring to
As illustrated in
The first pump 13a and the second pump 13b are located laterally symmetrically with reference to the center line C (see
As illustrated in
In the flow dividing controller 2 of Embodiment 2, the first pump 13a and the second pump 13b which are heavy in the housing 10 are located, in the first space, in the vicinity of the central portion in the horizontal direction. The first plate heat exchanger 14a and the second plate heat exchanger 14b are located, in the second space of the housing 10, in the vicinity of the central portion in the horizontal direction. The control box 16 is located in front of the first pump 13a and the second pump 13b in the first space and in front of the first plate heat exchanger 14a and the second plate heat exchanger 14b in the second space.
Therefore, the center of gravity of the flow dividing controller 2 according to Embodiment 2 is closer to the central portion of the housing 10 in the front-back direction and in the lateral direction than the flow dividing controller 2 of Embodiment 1. It is therefore possible to more reliably reduce the probability that a cargo shifting will occur during transport of the flow dividing controller 2, using a forklift or other transporters, and thus safely transport the flow dividing controller 2.
The control box 16 is located closer to the front side than the first pump 13a and the second pump 13b in the first space and close to the front side than the first plate heat exchanger 14a and the second plate heat exchanger 14b in the second space. Accordingly, the center of gravity of the housing 10 is located in the vicinity of the central portion of the housing 10 in the front-back direction and in the lateral direction. Therefore, even in the case where the housing 10 is stacked on another housing 10, it is therefore possible reduce the probability that the housing 10 stacked on the other housing 10 will be inclined.
Services for components includes a service requiring cutting and brazing of pipes and a service not requiring cutting or brazing of pipes. Regarding Embodiment 3, the layout of components for which the service not requiring cutting or brazing of pipes is offered will be described in addition to the components as described above regarding Embodiment 1. The pipes are pipes that connect a component for which a service is offered and other components.
The components for which the service not requiring cutting or brazing of pipes is offered are the following seven components: a coil of a four-way valve 21a; solenoid valve coils 22; a check valve coil 23; a three-way valve motor 25; a coil of a four-way valve 21b; a tank-body protective valve 24; and the motors 15b of the valve block 15 in the flow switching circuit 5a.
The above components excluding the motors 15b for the valves 15a of the valve block 15, that is, the six components of: the coil of the four-way valve 21a; the solenoid valve coils 22; the check valve coil 23; the three-way valve motor 25; the coil of the four-way valve 21b; and the tank-body protective valve 24, are located at lower positions than a central portion of the housing 10 in the height direction of the housing 10 as viewed from the front of the housing 10. Of these six components, the coil of the four-way valve 21a, the coil of the four-way valve 21b, and the three-way valve motor 25 are provided in the second space; the solenoid valve coils 22 are provided in the first space and the second space; and the check valve coil 23 and the tank-body protective valve 24 are provided in the first space.
In Embodiment 3, the control box 16 is provided on the front side of the inside of the housing 10 and in an upper region in the second space.
The above seven components excluding the motors 15b of the valve block 15, that is, the six components of the coil of the four-way valve 21a, the solenoid valve coils 22, the check valve coil 23, the three-way valve motor 25, the coil of the four-way valve 21b, and the tank-body protective valve 24, are located below the control box 16 so as not to be in contact with the control box 16 located on the front side. The motors 15b of the valve block 15 are located in the third space above the control box 16 so as not to be in contact with the control box 16 located on the front side.
As illustrated in
Coils of the four-way valves 21 (the coil of the four-way valve 21a and the coil of the four-way valve 21b), the solenoid valve coils 22, the check valve coil 23, and the tank-body protective valve 24, that is, six components, are located on the back side of the lower front panel 32. The motors 15b of the valve block 15 are located on the back side of the upper front panel 31.
Therefore, in the flow dividing controller 2 in the air-conditioning apparatus 100 according to Embodiment 3, the components for which a service not requiring cutting or brazing of pipes is offered are located at such positions that the components are not in contact with the control box 16 located on the front side. Thus, it is possible to offer the service without detaching the control box 16.
The front side panel of the flow dividing controller 2 is divided into the upper front panel 31 and the lower front panel 32. Thus, it is possible to reduce the number of service panels, compared with the case where the front side panel is divided into three service panels, that is, first, second, and third spaces.
Embodiment 4 relates to the layout of the four-way valve 21a and the solenoid valve 22a associated with the first plate heat exchanger 14a and the first pump 13a, which are used mainly in cooling, and the layout of the four-way valve 21b and the solenoid valve 22b associated with the second plate heat exchanger 14b and the second pump 13b. The four-way valve 21a and the solenoid valve 22a are provided at a pipe through which a secondary heat medium cooled at the first plate heat exchanger 14a flows. The four-way valve 21b and the solenoid valve 22b are provided at a pipe through which a secondary heat medium heated at the second plate heat exchanger 14b and the second pump 13b flows.
As illustrated in
The four-way valve 21a and the solenoid valve 22a are located adjacent to each other in the horizontal direction in the vicinity of the first plate heat exchanger 14a. The four-way valve 21a is located at an upper position than the solenoid valve 22a.
The four-way valve 21a and the solenoid valve 22a are provided at a pipe of the flow switching circuit 5a through which a secondary heat medium subjected to heat exchange and cooled at the first plate heat exchanger 14a is supplied to the indoor unit 3 (see
The four-way valve 21b and the solenoid valve 22b are located adjacent to each other in the lateral direction in the vicinity of the first plate heat exchanger 14a. The four-way valve 21b is located at a higher position than the solenoid valve 22b.
The four-way valve 21b and the solenoid valve 22b are provided at a pipe of the flow switching circuit 5a through which a secondary heat medium subjected to heat exchange and heated at the second plate heat exchanger 14b is supplied to the indoor unit 3.
The four-way valve 21a and the solenoid valve 22a are located adjacent to the four-way valve 21b and the solenoid valve 22b. The four-way valve 21b and the solenoid valve 22b are located between the second plate heat exchanger 14b and the four-way valve 21a and the solenoid valve 22a.
Therefore, in the flow dividing controller 2 of Embodiment 4, the four-way valve 21a and the solenoid valve 22a are located in the second space and in the vicinity of the first plate heat exchanger 14a. Thus, it is possible to reduce the length of a cooling-side pipe that connects the four-way valve 21a and the solenoid valve 22a. The four-way valve 21b and the solenoid valve 22b are located in the second space and in the vicinity of the second plate heat exchanger 14b. Thus, it is possible to reduce the length of a heating-side pipe that connects the four-way valve 21b and the solenoid valve 22b. As a result, pipe processing costs and material costs can be reduced. Furthermore, in the flow dividing controller 2 of Embodiment 4, it is possible to reduce the length of the pipes and thus reduce occurrence of a stress at the pipes.
In the flow dividing controller 2 of Embodiment 4, since the components for the cooling are separated from those for the heating, it is possible to easily check and grasp the flow of a heat medium. The components for the cooling include the first pump 13a, the first plate heat exchanger 14a, the four-way valve 21a, and the solenoid valve 22a. The components for the heating include the second pump 13b, the second plate heat exchanger 14b, the four-way valve 21b, and the solenoid valve 22b.
In the flow dividing controller 2 of Embodiment 5, a base metal sheet 41b for the plate heat exchanger 14 and a base metal sheet 41c for the valve block 15 are provided.
Four columns 40 are provided at four corners of the housing 10 having a cuboid shape. The four columns 40 extend in the vertical direction. It should be noted that
The first plate heat exchanger 14a and the second plate heat exchanger 14b are fixed to the base metal sheet 41b. The valve block 15 is fixed to the base metal sheet 41c.
The first pump 13a and the second pump 13b are fixed to a base metal sheet 41a located at a bottom portion of the housing 10.
At an initial stage of assembling the flow dividing controller 2 as described above, the four columns 40 are provided at the respective corners of the bottom portion of the housing 10. Then, the base metal sheet 41b to which the first plate heat exchanger 14a and the second plate heat exchanger 14b are fixed and the base metal sheet 41c to which the valve block 15 is fixed are attached to the columns 40.
In the flow dividing controller 2 according to Embodiment 5, the first plate heat exchanger 14a and the second plate heat exchanger 14b are fixed to the base metal sheet 41b, and the valve block 15 is fixed to the base metal sheet 41c. Therefore, the weights of these components are not loaded on the first pump 13a or the second pump 13b. It is therefore possible to reduce the probability that a failure will occur in the first pump 13a or the second pump 13b.
The first pump 13a and the second pump 13b are fixed to the base metal sheet 41a. The first plate heat exchanger 14a and the second plate heat exchanger 14b are fixed to the base metal sheet 41b. The valve block 15 is fixed to the base metal sheet 41c. Therefore, these components are easily positioned at the time of assembling the flow dividing controller 2. Furthermore, since these main components are fixed to the base metal sheet 41a, the base metal sheet 41b, and the base metal sheet 41c, and are thus positioned, the pipes and other components can be easily assembled.
Unlike existing horizontal flow dividing controllers, the flow dividing controller 2 of Embodiment 5 is vertically oriented, in which the first plate heat exchanger 14a, the second plate heat exchanger 14b, and the valve block 15 are arranged in the vertical direction. In this configuration, the first plate heat exchanger 14a, the second plate heat exchanger 14b, and the valve block 15 are moved downward due to their own weights in the direction of gravity.
In the flow dividing controller 2 of Embodiment 5, the first plate heat exchanger 14a and the second plate heat exchanger 14b are fixed to the columns 40, with the base metal sheet 41b interposed therebetween, and the valve block 15 is fixed to the columns 40, with the base metal sheet 41c interposed therebetween. Because of this configuration, it is possible to reduce the probability that these components will be moved downward. As a result, it is possible to easily assembly the flow dividing controller 2.
As illustrated in
In the refrigerant circuit 201, refrigerant from the outdoor unit 1 circulates. The refrigerant circuit 201 includes the four-way valve 21a, the four-way valve 21b, the first plate heat exchanger 14a, the second plate heat exchanger 14b, solenoid valves 210a, 210b, 210c, 210d, and 210e, and a check valve 211.
The four-way valves 21a and 21b are connected to refrigerant pipes extending from the outdoor unit 1, and each change a flow passage in the refrigerant circuit 201 depending on whether the cooling operation or the heating operation is performed. The four-way valve 21a and the four-way valve 21b are connected to the first plate heat exchanger 14a and the second plate heat exchanger 14b, respectively, by respective pipes.
The solenoid valves 210a and 210b are connected parallel to a pipe located on the downstream side of the first plate heat exchanger 14a. The solenoid valves 210a and 210b adjust the flow rate of refrigerant that flows in the first plate heat exchanger 14a. The solenoid valves 210c and 210d are connected parallel to a pipe located on the downstream side of the second plate heat exchanger 14b. The solenoid valves 210c and 210d adjust the flow rate of refrigerant that flows in the second plate heat exchanger 14b.
The solenoid valve 210e and the check valve 211 are connected parallel to pipes located on the downstream side of the solenoid valves 210a, 210b, 210c, and 210d. The solenoid valve 210e adjusts the flow rate of refrigerant that flows in the first plate heat exchanger 14a and the second plate heat exchanger 14b. The check valve 211 is configured to prevent backflow of refrigerant that flows through a pipe. Refrigerant that passes through the pipe at which the solenoid valve 210e is provided returns to the outdoor unit 1.
The solenoid valves 210a, 210b, 210c, 210d, and 210e include respective solenoid valve coils 22 (see
The water circuit 202 includes the first pump 13a, the second pump 13b, the first plate heat exchanger 14a, the second plate heat exchanger 14b, a three-way valve 301, and the valve block 15. The valves 15a of the valve block 15 (see
The three-way valve 301 is connected to a water supply and expansion tank by a water supply pipe. The three-way valve 301 is connected to the first pump 13a and the second pump 13b by pipes. The first pump 13a and the second pump 13b are connected parallel to each other. The three-way valve 301 has a function of causing air to be removed from the water circuit 202 and equalizing the pressure in the water circuit 202.
One of the ports of the three-way valve 301 is connected to the water supply and expansion tank. One of the other two ports is connected to the first pump 13a by a pipe. The first pump 13a compresses water supplied from the three-way valve 301 and transfers the compressed water. The first pump 13a and the first plate heat exchanger 14a are connected by a pipe. The valves 15a of the valve block 15 include a valve 15a for cooling (see
One of the ports of the three-way valve 301 is connected to the water supply and expansion tank. The other of the other two ports is connected to the second pump 13b by a pipe. The second pump 13b compresses water supplied from the three-way valve 301 and transfers the compressed water. The second pump 13b and the second plate heat exchanger 14b are connected by a pipe. The second plate heat exchanger 14b is connected to valves 15a for heating in the valve block 15 by pipes. The valves 15a include the respective motors 15b. Water that passes through one of the valves 15a, which is a valve 15a for heating that is in an opened state, is supplied to the indoor unit 3 associated with this valve 15a for heating and being in the opened state.
It should be noted that the valve block 15 and sub-flow dividing controllers are connected parallel to the first plate heat exchanger 14a and the second plate heat exchanger 14b.
The first plate heat exchanger 14a and the second plate heat exchanger 14b according to each of Embodiments 1, 2, 3, 4, and 5 will also be referred to as “first heat exchanger” and “second heat exchanger,” respectively. The four-way valve 21a and the solenoid valve 22a will also be referred to as “first valve.” The four-way valve 21b and the solenoid valve 22b will also be referred to as “second valve.”
The embodiments are each merely described as an example, and the descriptions regarding the embodiments are not intended to limit the scope of the claims. The embodiments can be variously modified and put to practical use. Various omissions, replacements, and changes can be made without departing from the scope of the embodiments. These embodiments and modifications thereof fall within the scope and gist of the embodiments.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2020/018501 | 5/7/2020 | WO |
