TWI328669B - - Google Patents

Description

1328669 IX. Description of the Invention: [Technical Field] The present invention relates to a refrigeration apparatus, and more particularly to an adsorption heat recovery refrigeration apparatus for a refrigeration system. [Prior Art] Referring to Fig. 1, a conventional refrigerating cycle device 1 includes a refrigerant (not shown), a η, a condenser 12, an expansion valve 13, and a base device μ'. And the above compressor "condenser 12, expansion valve 13" and evaporator μ

The four are connected to each other to form a cold wire loop path through which the refrigerant flows (in the direction of the clockwise rotation in the figure).

Together, _i, 2, when the refrigerant is located in the compressor u, is (4) a gas state that is reduced to a high waste superheat, and the σ end is in a state as indicated by point A, and then flows out of the compressor U to enter the person. The condenser 12, at this moment, the refrigerant will conduct the heat carried by itself to the cooling medium (for example, air, water, or a mixture of the two) around the condenser 12 via the condenser 12 to make the refrigerant The heat dissipation forms a high-pressure liquid state, and the outlet end thereof is in a state as indicated by point B, and then flows into the expansion valve 13. The control of the expansion valve 13 causes the cooling force to decrease and the temperature of the wire to be lowered, and the outlet end is not in the state of point C, but is sent to the base path, and the radiator 14 can be used. Absorbing the heat of the air around the evaporation benefit 14 to pass through the solid medium >, the person, and the inner raft to cool, the refrigerant itself absorbs heat and raises the temperature, the basin is reversed, and the outlet end is as D point. In the state shown, it is sent to the repetitive machine 1 1 to re-push the /- rar, ^ the line is reduced to the temperature to the pressure gas, to recycle the loop of the structure of the medium (four) flow, by the above cold (four) The ring process 'is achieved for the purpose of lowering the temperature of the air around the evaporator 14. 6 However, the above-mentioned cold; east cycle process 'f wants profit (four) compressor u compresses the refrigerant into a high-pressure superheated gas state, so it consumes a large amount of heat energy, and the lowest temperature at which cooling can be achieved is also only in Figure 2. The BC section temperature cannot be further reduced. Therefore, under the framework of the existing refrigerating cycle device, it is not necessary to make the compressor 11 do more work, that is, to further reduce the subcooling temperature of the refrigerant to improve the freezing capacity, which has become a direction that the relevant industry is trying to study. SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an adsorption heat recovery refrigeration apparatus for a refrigeration system that can effectively utilize waste heat generated by a general refrigeration system for recycling, and further reduce overcooling of the refrigerant in a liquid state. Temperature 'Tinan's overall cold capacity. Thus, the invention relates to an adsorption heat recovery refrigeration device for a refrigeration system, the cold; the east system is the original conventional cold; the east system, and is composed of a compressor, a main condenser, a main expansion valve, and a main The evaporator comprises a first adsorption unit, a second adsorption unit, an exchange unit, and an adsorption refrigeration unit. The first adsorption unit defines a first accommodating space, and has a first absorbing refrigerant suction end and a first absorbing refrigerant discharge end. The second absorbing unit also defines a second accommodating space. And having a second adsorption refrigerant suction end, and a second adsorption refrigerant discharge end, the exchange unit has a first conduit extending through the first accommodation space and extending through the second accommodation space a second conduit, a first switching three-way valve disposed at one end of the first conduit, and a compression of the main refrigerant three and two switching three-way valves at the other end of the second conduit disposed at one end of the second conduit The machine switches the three-way valve, communicates with the first-stage valve, and communicates with the compressor and the first discharge end conduit. The adsorption refrigeration unit has an adsorption condenser that defines a third accommodating space, an adsorption evaporator that defines a fourth valley space around the demarcation & circle, and communicates with the main refrigerant three (four) and main condensation (4) a conduit for the outlet end of the main refrigerant condenser, an adsorption condensing heat exchange tube extending through the third accommodating space and communicating with the main condenser at both ends, and a communication between the main condenser and the first and second switching directions a main refrigerant liquid pipe of the valve, an adsorption evaporating heat exchange pipe extending through the fourth accommodating space and communicating between the main condenser and the main expansion valve at both ends, and an adsorption refrigerant communicating with the third and fourth accommodating spaces a return pipe, and an adsorption expansion valve disposed on the adsorption refrigerant return pipe. The invention has the effect of controlling the action of sucking and desorbing heat of the first 'two adsorption unit by using the exchange unit, so that the first and second adsorption units can alternately adsorb or release thermal energy repeatedly to achieve rapid absorption and desorption. Function, improve the overall operation efficiency; together with the setting of the adsorption refrigeration unit, the refrigerant can be further reduced in temperature before being sent to the main expansion valve, without the need to make the compressor do more work, thereby effectively improving the refrigeration capacity of the overall system. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments. Referring to Figure 3, a preferred embodiment of the present invention is directed to an adsorption heat recovery refrigeration unit 3 for a refrigeration system 2 which is comprised of a compressor 21, a main 1328669 condenser 22, a main expansion valve 23' and a The main evaporator 24 is composed of a main condenser 22 which mainly uses an external circulating water path to reduce the temperature of the refrigerant in the main condenser 22. The function of the main evaporator 24 is to make the internal low-temperature refrigerant and the external environment ( The air or water is exchanged for heat to reduce the ambient temperature and achieve the effect of cooling and cooling. This design is easily understood by those of ordinary knowledge in the field of cold cycle technology, so it is not mentioned here.

The adsorption heat recovery refrigeration unit 3 includes a first adsorption unit 31, a second adsorption unit 32, an exchange unit 33, and an adsorption refrigeration unit 34.

The first adsorption unit 31 defines a first accommodating space 311, and has a first absorbing refrigerant suction end 312, and a first absorbing refrigerant discharge end 313'. The second absorbing unit 32 also defines a first The second accommodating space 321' has a second absorbing refrigerant suction end 322 and a second absorbing refrigerant discharge end 323. In the preferred embodiment, the first and second adsorption units 31 and 32 are made of a material having a porous high hygroscopic property, and the material having a porous high hygroscopic property may be cerium oxide, zeolite, or the like. The vaporized calcium 'or activated carbon' may also be a mixture of at least two of them. It is worth mentioning that the first and second adsorption refrigerant suction ends 312, 322 and the first and second adsorption refrigerant discharge ends 313, 323 use a differential pressure check valve to utilize the first and second adsorption units 3 The pressure difference in 32, to open or close each inhalation, spit out the check valve, and then produce more accurate action and efficiency for the suction and desorption. The so-called differential pressure check valve is a common one-way one-way valve. The switching unit 33 has a second duct 332 extending through the second receiving space 321 and extending through the first receiving space 311, and is disposed on the first duct 331. The first switching three-way reading 333 of the end is disposed at the second guiding; the second switching three-way valve 334 of the second end of the ^ 332, the main refrigerant three-way connecting the other ends of the first and second conduits 331, 332 The valve 335' and a compressor discharge end pipe 336 that communicates the compressor 21 and the first and second switching three-way valves 333, 334. The adsorption refrigeration unit 34 has an adsorption condenser 341 defining a third accommodating space 340, a surrounding-defining evaporator 343, and a main refrigerant three-way valve milk. The main condenser condenser outlet conduit (10) of the main condenser 22 extends through the third occupant = 340 and the two ends respectively communicate with the adsorption condenser condensing heat exchange tube 345 of the main condenser, and the main condenser is connected 22 and the first and second switching three-way valves 333, 334 of the main refrigerant liquid pipe (10), - penetrated in the fourth accommodating space 342 and both ends of the main condensing system 22 and the main expansion valve 23 adsorption evaporation H 347. An adsorption refrigerant return pipe 348' that communicates with the third and fourth accommodating spaces, and an adsorption expansion chamber 349 that is disposed on the adsorption refrigerant return pipe state. - and referring to Fig. 3'4', an embodiment of the adsorption heat recovery refrigeration system 3 will be described hereinafter in accordance with the above hardware connection structure. The switching unit 33 can be repeatedly changed between the -first use state and the second use state, and in the first use state, the first-switching three-way 333 of the exchange order & 33 is switched to the compressor The spouting duct state is connected to the first duct state. At this time, the high temperature refrigerant (point A in the figure) rotated by the compressor 21 passes through the compressor discharge end duct 336, the first-switching three-way valve. For example, 10 1328669 flows into the first conduit 331, thereby heating the first adsorption unit 31, releasing the cooling medium adsorbed by the first adsorption unit 31 in a vapor state, and upwardly passing the first adsorption refrigerant. The discharge end 313 enters the third accommodating space 340.

On the other hand, the refrigerant in the first conduit 331 'reduced the temperature after the end of the heating process (about 5 〇 ° C in the state of point B in the figure), and then condenses through the main refrigerant two-way valve 335 and the main refrigerant. The outlet end conduit 344 enters the main condenser 22 (point C in the figure). At this time, the refrigerant first exchanges heat with the external circulating water passage to lower the temperature again (the state at point D is about 32 ° C in the figure). The second switching three-way valve 334, which cooperates with the switching unit 33, switches to the second conduit 332 to communicate with the main refrigerant liquid pipe 346, so that the low-temperature refrigerant passes through the adsorption condensation heat exchange tube 345 and the main refrigerant respectively. The liquid pipe 346 adsorbs the evaporation heat exchange pipe 347, and flows into the adsorption condenser 341, the second adsorption unit 32, and the adsorption evaporator 343.

In the adsorption condenser 341, the low-temperature refrigerant in the adsorption condensation heat exchange tube 345 exchanges heat with the high-temperature cooling medium, so that the refrigerant rises to a temperature and then flows back into the main condenser 22, and at the same time, the cooling medium is After the temperature is lowered, it is again returned through the adsorption refrigerant return pipe 348, and further reduced in temperature by the action of the adsorption expansion valve 349 before flowing into the fourth accommodating space 342; at this time, the fourth accommodating space The temperature of the cooling medium flowing in 342 is lower than the temperature of the refrigerant in the adsorption vaporization heat exchange tube 347 which has not flowed into the adsorption evaporator 343. In the adsorption evaporator 343, the refrigerant in the adsorption evaporation heat exchange tube 347 exchanges heat with the lower temperature cooling medium to make the refrigerant flow 11 1328669

When the adsorption evaporator 343 is exited, the temperature can be further lowered (about 10 C in the state of point E in the figure) to flow toward the main evaporator 24, and at the same time, with the setting of the main expansion valve 23, the high-pressure refrigerant is expanded to a low pressure. (Figure EF section), is sent into the main evaporator 24, heat exchange with the external environment, so that the external environment temperature is reduced 'to achieve the effect of cooling and cooling, as the temperature of the refrigerant itself will rise (Figure The middle FG section) is then recirculated to the compressor 2 J to be compressed into a high temperature and high pressure refrigerant (GA section in the figure) for reuse.

The cooling medium in the fourth accommodating space 342 absorbs heat, increases the temperature, and then enters the second accommodating space 321 through the second absorbing refrigerant suction end 322. At this time, the main refrigerant liquid pipe 346 The low-temperature refrigerant in the inside flows into the second accommodating space 321 via the second switching three-way valve 334 and the second duct 332, thereby causing the second adsorption unit 32 to perform the adsorption operation of the cooling medium, and also When the refrigerant flows out of the second accommodating space 321, the temperature thereof is increased, and the main refrigerant three-way valve 335 and the main refrigerant condenser outlet end pipe 344 are returned to the main condenser 22. Referring to FIG. 5, after a predetermined time interval, the switching unit 33 switches to the second use state, that is, the second switching three-way valve 334 of the switching unit 33 switches to the compressor discharge end conduit 336 and The second conduit is connected such that the high-temperature refrigerant outputted by the compressor 21 flows into the second conduit 332 via the compressor discharge end conduit 336 and the second switching three-way valve 334 to The second adsorption unit 32 performs heating to cause desorption, releases the cooling medium in a vapor state, and enters the third accommodating space 34 向上 through the first adsorption refrigerant discharge end 323 upward. 12 1328669

On the other hand, the refrigerant in the second conduit 332 is lowered in temperature after the end of the heating process, and then enters the main condenser 22 via the main refrigerant three-way valve 335 and the main refrigerant condenser outlet end conduit 344. At this time, the refrigerant first exchanges heat with the external circulation waterway to lower the temperature again, and the second switching three-way valve 334 that cooperates with the exchange unit 33 switches to the first conduit 331 to communicate with the main refrigerant liquid pipe 346 to The low-temperature refrigerant passes through the adsorption condensation heat exchange tube 345, the main refrigerant liquid tube 346, and the adsorption evaporation heat exchange tube 347, and flows into the adsorption condenser 341, the first adsorption unit 31, and the adsorption evaporator 343, respectively. The low temperature refrigerant in the main refrigerant liquid pipe 346 flows into the first grain space 311 via the first switching three-way valve 333 and the first pipe 33i, thereby causing the first adsorption unit 31 to perform a cooling medium. Adsorption action.

And after the predetermined time, the switching unit 33 is switched to the first use state shown in FIG. 3, and the first design and the adsorption unit 31, 32 can be alternately adsorbed or alternately. Release heat energy to achieve rapid suction and desorption, improve overall operational efficiency. That is to say, when the adsorption heat recovery refrigeration device 3 is actually operating, the exchange unit 33 can repeatedly change between the first use state and the second use state. The desorption is caused by heating, and the adsorption is generated during cooling to absorb or discharge the refrigerant. However, since the actuation time due to adsorption and desorption is long, the present invention utilizes the first and second adsorption units 31 and 32 to operate in parallel, and cooperates with The first and second adsorption refrigerant suction ends 312 and 322 are structural forms of the suction differential pressure check valve, and the first and second adsorption refrigerant discharge ends 313 and 323 are structural forms of the discharge differential pressure check valve to replace Commonly used automatic mechanical valve 13 1328669 door.

In this way, in the suction and desorption process, the pressure difference between the first and second adsorption units 3, 32 can be used to open/close the respective suction and discharge check valves, thereby generating more precise action on the suction and desorption. And efficiency, and not as conventionally known as the residual pressure in the body due to the mechanical switch, so that it can facilitate the heat transfer speed of heating and cooling, and thus achieve the continuous action of rapid suction and removal of the refrigerant. That is, the efficiency and speed of the inhalation and discharge of the refrigerant are better. Thus, the first and second adsorption units 31, 32 can operate the suction and exhaust bodies as the cylinders of the mechanical compressor, and the adsorption unit can be operated like a multi-cylinder compressor to quickly perform the suction and discharge functions. With the above design, the adsorption heat recovery refrigeration device 3 of the present invention has the advantages described below. (1) The refrigeration capacity of the overall system is improved:

4, although the compressor 21 of the adsorption heat recovery refrigeration device 3 of the present invention and the compressor 11 of the conventional refrigeration cycle device 1 perform the same work (GA segment), the present invention can be utilized for the adsorption. The refrigeration unit 34 is disposed such that the refrigerant can be supercooled before being sent to the expansion valve to generate a low pressure (DE segment to EF segment) to further reduce the refrigerant temperature; in contrast, the refrigerant of the conventional refrigeration cycle device 1 does not have adsorption refrigeration. Unit 34, so the lowest temperature can only be located at point D, and then sent to the expansion valve 13 to depressurize (only the DF' section without the DE section), therefore, the present invention does not require the compressor 21 to do more work, that is, the refrigerant can be The temperature is further lowered before being sent to the main expansion valve 23, thereby effectively improving the refrigeration capacity of the overall system 14 1328669. (2) Improve overall operational efficiency:

The switch unit 33 is repeatedly switched between the first and second use states, so that the first and second adsorption units, 32 can alternately adsorb or release the refrigerant repeatedly, and it is not necessary to manually or electronically control the waste to wait for moisture absorption. The time of dehumidification not only reduces the overall construction cost, but also improves the overall operational efficiency. In summary, the adsorption heat recovery refrigeration device 3 of the present invention controls the action of sucking and desorbing heat of the first and second adsorption units 31, 32 by the exchange unit 33 in actual use, so that the first and second adsorption units 31 are caused. 32 can alternately adsorb or release thermal energy repeatedly to achieve the functions of rapid suction and desorption, without wasting time waiting for moisture absorption and dehumidification, and improving overall operation efficiency; together with the setting of the adsorption refrigeration unit 34, Before the refrigerant enters the main expansion valve 23, the temperature is further lowered, thereby effectively increasing the freezing month b force of the overall system, and furthermore, the design of the differential pressure check valve is used to achieve rapid suction.

The desorption function is intended to facilitate practical operation, so it is indeed possible to achieve the object of the present invention. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is limited to the scope of the invention. Modifications are still within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the state of use, illustrating a conventional cold; east cycle device. Fig. 2 is a Morrill line diagram of a refrigeration cycle, illustrating a conventional cold beam, 15 1328669

[Main component symbol description] 2 Refrigeration system 332 Second conduit 21 Compressor 333 First switching three-way valve 22 Main condenser 334 Second switching three-way 23 Main expansion valve 335 Main refrigerant three-way valve 24 Main evaporator 336 Compression Machine discharge end guide 3 adsorption heat recovery refrigeration tube device 34 adsorption refrigeration unit 31 first adsorption unit 340 third accommodation space 311 first accommodation space 341 adsorption condenser 312 first adsorption refrigerant suction 342 fourth accommodation space inlet end 343 adsorption evaporator 313 first adsorption refrigerant discharge 344 main refrigerant condenser outlet port end conduit 32 second adsorption unit 345 adsorption condensation heat exchange 321 second accommodation space tube 322 second adsorption refrigerant suction 346 main refrigerant liquid tube inlet end 347 adsorption evaporation heat exchange 323 second adsorption refrigerant discharge pipe outlet 348 adsorption refrigerant return pipe 33 exchange unit 349 adsorption expansion valve 331 first conduit 17

Claims (1)

1328669 X. Patent application scope: 1 · An adsorption heat recovery refrigeration device for a refrigeration system, the refrigeration system is composed of a compressor, a main condenser, a main expansion valve, and a main evaporation The adsorption heat recovery refrigeration device comprises: a first adsorption unit defining a first accommodation space, and having a first adsorption refrigerant suction end, and a first adsorption refrigerant discharge end and a second adsorption unit, surrounding the definition a second accommodating space having a second absorbing refrigerant suction end, and a second absorbing refrigerant discharge end, the exchange unit having a first conduit extending through the first accommodating space and extending through the first conduit a second conduit in the second accommodating space, a first switching three-way valve disposed at one end of the first conduit, a second switching three-way valve disposed at one end of the second conduit, and a communication a main refrigerant three-way valve at one end of the first and second conduits, and a compressor discharge end conduit connecting the compressor with the first and second switching three-way valves; and an adsorption refrigeration unit having a circumference defining a third a space-adsorbing condenser, an adsorption evaporator surrounding a fourth accommodating space, a main refrigerant condenser outlet end conduit connecting the main refrigerant three-way valve and the main condenser, and a third extension An adsorption condensing heat exchange tube that communicates with the main condenser at both ends of the accommodating space, a main refrigerant liquid tube that communicates with the main condenser and the first and second switching three-way valves, and a fourth accommodating portion An adsorption heat exchange tube connecting the main condenser and the main expansion valve in the space and at both ends, an adsorption 18 1328669 refrigerant return pipe communicating with the third and fourth accommodation spaces, and a refrigerant return pipe disposed on the adsorption refrigerant return pipe Adsorption expansion. Valve. 2. The adsorption heat recovery refrigeration device for a refrigeration system according to claim 1, wherein the first and second adsorption refrigerant suction ends and the first and second adsorption refrigerant discharge ends are differential pressure check valves . 3. The adsorption heat recovery refrigeration apparatus for a cold-warming system according to the scope of claim 2, wherein the first and second adsorption units are made of a material having a porous 'high moisture absorption property. 4. The adsorption heat recovery refrigeration device for a refrigeration system according to the third application of the patent application scope, wherein the material having the porous high moisture absorption property is selected from the group consisting of cerium oxide, zeolite, chlorine Calcium, activated carbon, and a combination of these. 19