1. Field of the Invention
The present invention relates to adsorption refrigeration technology, and more particularly, to a method for controlling an adsorption air conditioning equipment.
2. Description of the Prior Art
With the global economy developing and evolving, energy issues and environmental issues are ones of the focuses of the international community's attention. Among these issues, adsorption refrigeration technology is not only a form of thermal energy-driven green refrigeration technology but is also regarded as crucial and effective in striking a balance between energy and environmental protection.
Adsorption refrigeration technology works when, due to the adsorption effect of an adsorbent upon a refrigerant, a liquid refrigerant evaporates to effectuate refrigeration. Adsorption refrigeration usually takes place in two stages. In the first stage, sensible heat and adsorption heat of an adsorbent is removed therefrom by a medium, such as water or air, to finalize the adsorption effect of the adsorbent upon a liquid refrigerant and turn the liquid refrigerant into a vapor refrigerant by evaporation, using an evaporator, so as to effectuate refrigeration. The second stage involves: supplying, upon completion of the adsorption effect, thermal energy (such as solar energy, industrial waste heat, or vehicle waste heat), in the form of desorption heat, to the adsorbent, so as to bring about desorption and finalize regeneration of the adsorbent; and releasing, in a condenser, energy from the vapor refrigerant desorbed out of the adsorbent, so as to restore the liquid state of the refrigerant.
In practice, adsorption refrigeration technology can be applied to an air conditioning system. Adsorption air conditioning features the replacement of a compressor and related devices by adsorption beds, condensers, and evaporators to thereby dispense with noise which might otherwise be produced by the compressor in operation. Also, secondary energy, such as solar energy or waste heat, can be an energy source for adsorption air conditioning. Accordingly, adsorption air conditioning is advantageously effective in saving energy, protecting the environment, and cutting operation costs.
However, to enable adsorption and desorption to occur smoothly during the process of adsorption air conditioning, a water circulation pipeline for using in adsorption air conditioning requires the installation of valves therein for system control. For example, upon completion of desorption, it is necessary for the valves to be switched in a manner that not only is hot water conveyed to a position (of the latest completion of adsorption) of an adsorption bed, but a trace of the hot water is removed from the adsorption bed and returned to a hot water source. Likewise, upon completion of adsorption, it is necessary for the valves to be switched in a manner that not only is cold water conveyed to a position (of the latest completion of desorption) of the adsorption bed, but a trace of the cold water is removed from the adsorption bed and returned to a cold water source. Similarly, the valves are switched to enable system control so as for the adsorption beds to operate in conjunction with evaporators, condensers, or evaporating/condensing apparatuses.
Accordingly, it is imperative to control the operation mode and operation time of adsorption air conditioning equipment efficiently and optimize the performance of adsorption air conditioning equipment, so as to meet user needs.
The present invention relates to a method for controlling an adsorption air conditioning equipment to enable the automatic switching of executable operation programs according to an execution sequence and by means of flow control, timing control, and valve-switching control, so as to improve the performance of the adsorption air conditioning equipment.
The present invention relates to a method for controlling an adsorption air conditioning equipment, wherein the time parameters of the switching of operation programs are calculated in advance for using in the timing control of actual operation, so as to improve the performance of an adsorption air conditioning equipment.
The present invention relates to a method for controlling an adsorption air conditioning equipment. The method for controlling an adsorption air conditioning equipment is for using with an adsorption air conditioning equipment. The adsorption air conditioning equipment comprises at least two adsorption beds, at least two condensers/evaporators, and a plurality of valves. The valves control the flow direction of a waterway connected between the adsorption beds and the condensers/evaporators.
In order to achieve the above and other objectives, the present invention provides a method for controlling an adsorption air conditioning equipment, comprising the steps of: selecting one of a plurality of operation programs according to an execution sequence such that the selected operation program acts as an executable operation program, wherein the operation programs are executed according to the operation times, respectively; executing the selected operation program and enabling the adsorption beds and condensers/evaporators to operate in response to the executed operation program; switching to the next operation program in the execution sequence according to the operation time of the executed operation program such that the next operation program acts as the next executable operation program; and controlling the switching of the plurality of valves according to the next executed operation program.
In order to achieve the above and other objectives, the present invention provides a method for controlling an adsorption air conditioning equipment, comprising the steps of: (1) selecting the first operation program in an execution sequence from a plurality of operation programs according to the execution sequence; (2) executing the operation program thus selected, so as for the adsorption beds to operate according to the operation program being executed; (3) switching to the next operation program in the execution sequence as the next executable operation program according to the operation time of the executed operation program; (4) executing the operation program thus switched to, step (4) comprising the sub-steps of: controlling the switching of the valves according to the executed operation program; and enabling the adsorption beds to operate according to the executed operation program; and (5) going back to step (3) to execute step (3) through step (5) unless and until all the operation programs in the execution sequence are executed.
Implementation of the present invention at least involves inventive steps as follows:
1. Switching executable operation programs automatically according to an execution sequence and by means of flow control, timing control, and valve-switching control, so as to improve the performance of the adsorption air conditioning equipment.
2. Calculating the time parameters of the switching of operation programs in advance for using in the timing control of actual operation, so as to improve the performance of t adsorption air conditioning equipment.
A detailed description of further features and advantages of the present invention is given below so that a person skilled in the art can understand and implement the technical contents of the present invention and readily comprehend the objectives and advantages thereof by referring to the disclosure of the present specification and the appended claims in conjunction with the accompanying drawings, in which:
Referring to
The adsorption air conditioning equipment 10 further comprises: a power module 13, a switch component 14, a control system 15, and a plurality of relays (shown in the drawings and generally known as a relay set 16). The power module 13 supplies power to various constituent elements of the adsorption air conditioning equipment 10, such as the switch component 14, the control system 15, and the relay set 16. The switch component 14 starts or stops the operation of the adsorption air conditioning equipment 10. In the other words, the switch component 14 is used to start or stop the operation of the control system 15. Besides, a plurality of operation programs and the operation times corresponding to the operation programs are stored in the control system 15.
The control system 15 is configured to execute a program logic corresponding to the method of the present invention, store program logic of the operation programs of the adsorption air conditioning equipment 10, and drive the relay set 16 to enable the switching of the valve set 12. In this regard, one of the relays corresponds in position to one of the valves and actuates the switching of the corresponding valve.
Hence, the method for controlling an adsorption air conditioning equipment according to the present invention is implemented by a software program or firmware program. The control system 15 executes the software program or firmware program and thereby enables the adsorption air conditioning equipment 10 to execute every step of the method for controlling an adsorption air conditioning equipment according to the present invention.
Referring to
In step S150, the control system 15 drives relays according to the executed operation program and thereby actuates the switching of the corresponding valves, such that the flow direction of the waterway connected between the adsorption beds corresponds to the executed operation program, and thus conforms to the operation of the adsorption bed set 11.
After step S150, it is feasible to return to step S130 and then execute step S130 through step S150 sequentially and repeatedly, until all the operation programs in the execution sequence are completely executed.
Hence, the adsorption air conditioning equipment 10 can automatically control the timing of commencement and termination of operation programs in the execution sequence and execute, automatically and in sequence, all the operation programs in the execution sequence so as to improve the performance of the adsorption air conditioning equipment 10.
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Step S350 comprises the sub-steps of: controlling the switching of the valves according to the executed operation program (S352) such that the flow direction of the waterway connected between the adsorption beds corresponds to the executed operation program; and enabling the adsorption beds to operate according to the executed operation program (S354). If, upon completion of step S354, it is determined that an ensuing operation program is to be executed, the process flow will go back to step S340. The process flow will repeat unless and until all the operation programs in the execution sequence are executed.
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The operation times of the operation programs required for the execution of consecutive programs are calculated one by one in the course of the execution of the single program. The execution of the single program involves step S210 and step S220.
In step S210, the control system 15 performs the sub-steps of: receiving an input signal of the selected operation program (S212); responding to the input signal so as to control the switching of the valves (S214), such that the flow direction of the waterway connected between the adsorption beds corresponds to the selected operation program; and testing the selected operation program with an optimizing module so as to calculate the operation time of the operation program (S216).
Step S216 is followed by step S220. Step S220 involves storing the calculated operation time in the control system 15.
Step S220 is followed by step S230. Step S230 involves determining whether to execute another operation program (S230). In response to an affirmative determination, the process flow goes back to step S212.
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The operation programs are classified, according to the contents of execution, as at least the following: a plurality of scenario programs and a plurality of mass recovery programs. The scenario programs comprise a first scenario program, a second scenario program, a third scenario program, and a fourth scenario program.
In an embodiment exemplified by two adsorption beds, the two adsorption beds are defined as a left adsorption bed and a right adsorption bed.
To select the first scenario program (that is, to execute the first scenario program), the waterway connected between the left adsorption bed and the right adsorption bed is controlled by the valves, so as to introduce hot water into the left adsorption bed, introduce cooled water into the right adsorption bed (that is, step S150, step S110, or step S352), enable the left adsorption bed to undergo desorption, and enable the right adsorption bed to undergo adsorption (that is, step S130, step S330, or step S354).
To select the second scenario program (that is, to execute the second scenario program), the waterway connected between the left adsorption bed and the right adsorption bed is controlled by the valves, so as to introduce the cooled water into the left adsorption bed, introduce the hot water into the right adsorption bed (that is, step S150, step S110, or step S352), enable the left adsorption bed to undergo adsorption, and enable the right adsorption bed to undergo desorption (that is, step S130, step S330, or step S354).
To select the third scenario program (that is, to execute the third scenario program), the waterway connected between the left adsorption bed and the right adsorption bed is controlled by the valves, so as to enable the hot water to bypass all the adsorption beds, introduce the cooled water into the left adsorption bed and then into the right adsorption bed (that is, step S150, step S110, or step S352), and eventually enable the left adsorption bed and the right adsorption bed to undergo heat recovery (that is, step S130, step S330, or step S354).
To select the fourth scenario program (that is, to execute the fourth scenario program), the waterway connected between the left adsorption bed and the right adsorption bed is controlled by the valves, so as to enable the hot water to bypass all the adsorption beds, introduce the cooled water into the right adsorption bed and then into the left adsorption bed (that is, step S150, step S110, or step S352), and eventually enable the left adsorption bed and the right adsorption bed to undergo heat recovery (that is, step S130, step S330, or step S354).
For one of the first, second, third, and fourth scenario programs to be executed, the butterfly valve 17 is switched off so as to isolate the left adsorption bed 11a and the right adsorption bed 11b.
To select the first mass recovery program (that is, to execute the first mass recovery program), the waterway connected between the left adsorption bed 11a and the right adsorption bed 11b is controlled by the valves (shown in the drawing and generally known as the valve set 12), so as to introduce the hot water into the left adsorption bed 11a and introduce the cooled water into the right adsorption bed 11b, and then the butterfly valve 17 is switched on (that is, step S150, step S110, or step S352) to enable the left adsorption bed 11a to undergo desorption and enable the right adsorption bed 11b to undergo adsorption (that is, step S130, step S330, or step S354).
To select the second mass recovery program (that is, to execute the second mass recovery program), the waterway connected between the left adsorption bed 11a and the right adsorption bed 11b is controlled by the valves (shown in the drawing and generally known as the valve set 12), so as to introduce the cooled water into the left adsorption bed 11a and introduce the hot water into the right adsorption bed 11b, and then the butterfly valve 17 is switched on (that is, step S150, step S110, or step S352) to enable the left adsorption bed 11a to undergo adsorption and enable the right adsorption bed 11b to undergo desorption (that is, step S130, step S330, or step S354).
As regards execution of consecutive programs, the first scenario program, the first mass recovery program, the third scenario program, the second scenario program, the second mass recovery program, and the fourth scenario program are executed in sequence. Nonetheless, the disclosure of the present invention should not be limited to the aforesaid sequence and the aforesaid numbers/types of operation programs, as all the parameters are subject to changes as needed.
Furthermore, the operation time of the first scenario program and the second scenario program depends on the decrease in the temperature of the ice water as a result of the introduction of the cooled water. In this regard, the operation time of the first scenario program and the second scenario program is set to the time taken to stop the decrease in the temperature of the ice water after the introduction of the cooled water.
The operation time of the third scenario program and the fourth scenario program is set to the time taken to drive the water of the chamber SP1 or SP2 into the waterway of the chamber SP2 or SP1 when the chambers SP1, SP2 of two said adsorption beds 11a, 11b are pre-cooled or pre-heated. The operation time of the third scenario program and the fourth scenario program is calculated according to the volume of the waterway pipeline and motor.
The operation time of the first mass recovery program and the second mass recovery program is determined according to the time taken to switch on the butterfly valve 17. The operation time of the first mass recovery program and the second mass recovery program is one-sixth to one-tenth of the operation time of the first scenario program and the second scenario program.
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The embodiment illustrated with
The first joint, the second joint, the third joint, and the fourth joint of the valve 12a connect with a hot water feed hole, an inlet of the left adsorption bed 11a, a cold water feed hole, and an inlet of the right adsorption bed 11b, respectively. The first joint, the second joint, the third joint, and the fourth joint of the valve 12b connect with a hot water recycling aperture, an outlet of the right adsorption bed 11b, a cold water recycling aperture, and an outlet of the left adsorption bed 11a, respectively.
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In an embodiment exemplified by the waterway connected between the left adsorption bed 11a and the right adsorption bed 11b and comprised of six said valves SV1, SV2, SV3, SV4, SV5, SV6. Each of the six valves SV1, SV2, SV3, SV4, SV5, SV6 has three joints, namely a first joint, a second joint, and a third joint.
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For example, after one of the adsorption beds has been switched to the desorption mode, condensation takes place in the corresponding condensers/evaporators to thereby turn a vapor refrigerant into a liquid refrigerant by condensation. Once one of the adsorption beds begins to undergo adsorption, evaporation will take place in the corresponding condensers/evaporators to thereby turn the liquid refrigerant into the vapor refrigerant by evaporation, so as to effectuate refrigeration.
In conclusion, the switching of executable operation programs takes place automatically according to an execution sequence and by means of flow control, timing control, and valve-switching control, so as to improve the performance of the adsorption air conditioning equipment. The time parameters of the switching of operation programs are calculated in advance for use in the timing control of actual operation, so as to improve the performance of the adsorption air conditioning equipment.
The foregoing embodiments are provided to illustrate and disclose the technical features of the present invention so as to enable persons skilled in the art to understand the disclosure of the present invention and implement the present invention accordingly, and are not intended to be restrictive of the scope of the present invention. Hence, all equivalent modifications and variations made to the foregoing embodiments without departing from the spirit embodied in the disclosure of the present invention should still fall within the scope of the present invention as set forth in the appended claims.
Number | Date | Country | Kind |
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099137860 | Nov 2010 | TW | national |