JP2014001876A - Adsorptive refrigeration device and engine-driven air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adsorptive refrigeration device in which cooling/heating output is improved by using a cold storage agent.SOLUTION: An adsorptive refrigeration device 4 comprises: an adsorber 21 including an adsorbent 21A which is cooled in a medium adsorption mode to adsorb a medium and heated in a medium separation mode to separate the medium; an evaporator 3 which cools a cooling object by evaporating the medium as the medium is adsorbed to the adsorbent in the medium adsorption mode; and a condenser 23 which condenses the medium separated from the adsorbent in the medium separation mode and returns the medium to the evaporator. The cold storage agent 34 is provided in a heat exchange relation with the condenser.

Description

  The present invention relates to an adsorption refrigeration apparatus that cools an object to be cooled by evaporating as a medium is adsorbed by an adsorbent, and an engine-driven air conditioner including the adsorption refrigeration apparatus.

  Conventionally, an adsorption refrigeration apparatus includes an adsorber containing an adsorbent, a condenser connected to a medium outlet of the adsorber, and an evaporator connected to a medium outlet of the condenser and a medium inlet of the adsorber. The inside is evacuated and a medium (for example, water) is enclosed. Then, the adsorbent is heated to desorb the medium adsorbed on the adsorbent to form a gas (water vapor) and liquefy (water) with a condenser, and the liquefied medium is supplied to the evaporator. (Medium release mode). Next, the medium in the evaporator is evaporated by cooling the adsorbent and adsorbing the medium (medium adsorption mode). At this time, the cooling target is cooled by absorbing the latent heat of vaporization.

  Then, it is considered that such an adsorption refrigeration apparatus is used for, for example, supercooling the refrigerant that has exited the refrigerant condenser of the vehicle air conditioner. In this vehicle air conditioner, the evaporator of the adsorption refrigeration apparatus is incorporated in the refrigerant circuit of the vapor compression refrigeration apparatus, and the refrigerant discharged from the refrigerant condenser of the refrigerant circuit is a cooling target that is cooled by the evaporator. Thereby, the refrigerant discharged from the refrigerant condenser was supercooled to improve the refrigeration capacity of the vehicle air conditioner and improve the fuel consumption (for example, see Patent Document 1).

  In the adsorption refrigeration apparatus, the vapor medium adsorption amount Xa at the time of adsorption (the amount of medium adsorbed to the adsorbent when the medium adsorption mode is completed) and the vapor medium adsorption amount Xd at the time of desorption (medium desorption mode) The amount of adsorption ΔX (= Xa−Xd) with respect to the amount of the medium adsorbed on the adsorbent at the stage when the is completed becomes a cold output source.

  Further, in the medium desorption mode, since the liquefied medium is supplied into the evaporator, the cooling action in the evaporator cannot be obtained. In view of this, there have conventionally been two sets of adsorbers that are alternately switched to obtain a continuous cooling action (see, for example, Patent Document 2).

  However, when two sets of adsorbers are prepared, there arises a problem that the adsorption refrigeration apparatus is enlarged. Therefore, a cool storage agent is provided in the evaporator so that the cooling target is cooled at the same time that the cooling target is cooled in the medium adsorption mode, and the cooling target is cooled by using the cold energy stored in the cool storage agent even in the medium detachment mode. (For example, refer to Patent Document 3).

JP 2011-242017 A JP-A-11-223411 JP-A-6-18120

  Here, the vapor medium adsorption amount Xd at the time of desorption is the condensation pressure Pc (pressure in the condenser at the time of desorption) with respect to the vapor medium saturation pressure Pd at the time of desorption (the pressure in the adsorber at the time of desorption). The ratio Pc / Pd. Therefore, if the condensing pressure Pc decreases, the vapor medium adsorption amount Xd at the time of desorption decreases, so the adsorption amount difference ΔX increases, and as a result, the cooling output is also improved. If the cold output can be increased, the amount of the adsorbent can be reduced and the entire apparatus can be downsized.

  This invention is made | formed in view of the conventional situation which concerns, and provides the adsorption-type refrigeration apparatus which improved the cold output using the cool storage agent, and an engine drive type air conditioner using the same.

  In order to solve the above-mentioned problems, the adsorption refrigeration apparatus of the invention of claim 1 adsorbs a medium by being cooled in the medium adsorption mode and desorbing the medium by being heated in the medium desorption mode. An adsorber equipped with an adsorbent, an evaporator that cools the object to be cooled as the medium evaporates as the medium is adsorbed in the medium adsorption mode, and a desorption from the adsorbent in the medium desorption mode And a condenser for returning to the evaporator, wherein a regenerator is provided in a heat exchange relationship with the condenser.

  Further, the adsorption refrigeration apparatus according to the invention of claim 2 is characterized in that, in the above invention, a condensing blower for air-cooling the condenser in the medium desorption mode is provided, and the condensing fan is also operated in the medium adsorption mode. And

  Furthermore, the adsorption refrigeration apparatus of the invention of claim 3 is the above invention, wherein after the medium adsorption mode and before the medium desorption mode is executed, the adsorber, the evaporator and the condenser are brought into a non-communication state and the adsorbent is removed. The medium desorption preparation mode to be heated is executed, and the condensing blower is also operated in the medium desorption preparation mode.

  An adsorption refrigeration apparatus according to a fourth aspect of the invention includes an adsorber including an adsorbent that adsorbs a medium by being cooled in a medium adsorption mode and desorbs the medium by being heated in a medium desorption mode; As the medium is adsorbed by the adsorbent in the medium adsorption mode, an evaporator that cools the object to be cooled as the medium evaporates, and the medium desorbed from the adsorbent in the medium desorption mode is condensed, and the evaporator And a cooling water cooler for cooling the cooling water for cooling the condenser in the medium desorption mode and cooling the cooling water in the medium desorption mode. A cool storage agent is provided in a heat exchange relationship with a cooler or a condenser.

  The adsorption refrigeration apparatus of the invention of claim 5 includes a cooling water cooling blower for air-cooling the cooling water cooler in the above, and after the medium adsorption mode, before the medium desorption mode is executed, The medium desorption preparation mode for heating the adsorbent is performed with the evaporator, the evaporator, and the condenser in a non-communication state, and the cooling water cooling blower is also operated in this medium desorption preparation mode.

  An adsorption refrigeration apparatus according to a sixth aspect of the present invention includes an adsorber including an adsorbent that adsorbs a medium by being cooled in the medium adsorption mode and desorbs the medium by being heated in the medium desorption mode; As the medium is adsorbed by the adsorbent in the medium adsorption mode, an evaporator that cools the object to be cooled as the medium evaporates, and the medium desorbed from the adsorbent in the medium desorption mode is condensed, and the evaporator In order to cool the adsorber in the medium adsorption mode, to cool the cooling water for cooling the condenser in the medium desorption mode, and to air-cool the cooling water cooler The cooling water cooling blower is provided, and after the medium adsorption mode, before the medium desorption mode is executed, the adsorbent is added to the adsorber, the evaporator, and the condenser in a non-communication state. And executes the media desorption ready mode, also characterized in that to drive the coolant cooling fan in the medium desorption preparation mode.

  An engine-driven air conditioner according to a seventh aspect of the present invention includes a vapor compression refrigeration apparatus and the adsorption refrigeration apparatus according to each of the above inventions, and the evaporator of the adsorption refrigeration apparatus allows the vapor compression refrigeration apparatus to The refrigerant flowing through the refrigerant circuit is cooled as a cooling target.

  According to the invention of claim 1, an adsorber including an adsorbent that adsorbs a medium by being cooled in the medium adsorption mode and desorbs the medium by being heated in the medium desorption mode; As the medium is adsorbed in the adsorbent, the evaporator evaporates the medium to cool the object to be cooled, and the medium desorbed from the adsorbent in the medium desorption mode is condensed and returned to the evaporator. In the adsorption refrigeration system equipped with a condenser, a cool storage agent is provided in a heat exchange relationship with the condenser, so by storing cold heat in this cool storage agent, the temperature of the condenser at the time of desorption in the medium desorption mode That is, the condensation temperature can be lowered.

  If the condensation temperature at the time of desorption decreases, the condensing pressure Pc corresponding thereto decreases, so that the vapor medium adsorption amount Xd at the time of desorption decreases as described above. If the vapor medium adsorption amount Xd at the time of desorption decreases, the adsorption amount difference ΔX increases, so that the cooling output of the adsorption refrigeration apparatus can be improved as a result, and the same output can be obtained. Thus, it is possible to reduce the amount of adsorbent in the adsorber, thereby reducing the overall size of the apparatus.

  In this case, the condenser does not function in the so-called air-cooled adsorption refrigeration apparatus if the condenser blower for air-cooling the condenser in the medium desorption mode is operated also in the medium adsorption mode. During the medium adsorption mode, the condenser and the cool storage agent provided in a heat exchange relationship with the condenser are air-cooled, and the cool temperature is stored in the cool storage agent so that the condensation temperature can be lowered in the subsequent medium release mode.

  In particular, in the medium desorption preparation mode in which the adsorber, the evaporator, and the condenser are disconnected from each other and the adsorbent is heated after the medium adsorption mode and before the medium desorption mode is executed. However, if the condenser blower is operated, it is possible to sufficiently cool the cool storage agent and store cold before entering the medium desorption mode. It is possible to increase the competence.

  According to the invention of claim 4, an adsorber including an adsorbent that adsorbs a medium by being cooled in the medium adsorption mode and desorbs the medium by being heated in the medium desorption mode; As the medium is adsorbed in the adsorbent, the evaporator evaporates the medium to cool the object to be cooled, and the medium desorbed from the adsorbent in the medium desorption mode is condensed and returned to the evaporator. And a cooling water cooler for cooling an adsorber in the medium adsorption mode and a cooling water cooler for cooling the cooling water for cooling the condenser in the medium desorption mode. Or, since the cool storage agent is provided in a heat exchange relationship with the condenser, the cool storage agent stores cold heat before entering the medium detachment mode in the so-called water-cooled adsorption refrigeration apparatus. Ri, similarly medium condenser temperature during desorption in the desorption mode, i.e., it is possible to lower the condensation temperature.

  If the condensation temperature at the time of desorption decreases, the cold output of the adsorption refrigeration system can be improved as described above, and if the output is the same, the amount of adsorbent in the adsorber can be reduced. As a result, the entire apparatus can be reduced in size. In addition, since the cold stored in the cold storage agent can be expected to lower the temperature of the adsorbent in the medium adsorption mode, it is possible to further increase the cold output.

  In this case, a cooling water cooling blower for air cooling the cooling water cooler as in the invention of claim 5 is provided, and after the medium adsorption mode and before the medium desorption mode is executed, the adsorber and the evaporator And the medium desorption preparation mode in which the adsorbent is heated with the condenser in a non-communication state and the cooling water cooling blower is operated in this medium desorption preparation mode before entering the medium desorption mode. The cooling water cooler and the condenser, and the cool storage agent provided in a heat exchange relationship therewith can be air-cooled, and cold energy can be stored in the cool storage agent.

  As a result, the condensation temperature can be effectively lowered in the subsequent medium detachment mode, and the amount of cold output can be further increased.

  According to the invention of claim 6, an adsorber comprising an adsorbent that adsorbs a medium by being cooled in the medium adsorption mode and desorbs the medium by being heated in the medium desorption mode; As the medium is adsorbed in the adsorbent, the evaporator evaporates the medium to cool the object to be cooled, and the medium desorbed from the adsorbent in the medium desorption mode is condensed and returned to the evaporator. , A cooling water cooler for cooling the cooling water for cooling the condenser in the medium desorption mode, and cooling water for cooling the cooling water cooler In an adsorption refrigeration system equipped with a cooling blower, after the medium adsorption mode, before the medium desorption mode is executed, the adsorbent is added to the adsorber, the evaporator, and the condenser in a non-communication state. In the so-called water-cooled adsorption refrigeration apparatus, the cooling is performed during the medium desorption preparation mode. The water cooler is air-cooled, and the temperature of the internal cooling water is lowered, so that the condensing temperature in the subsequent medium separation mode can be lowered.

  Also in this case, if the condensation temperature at the time of desorption decreases, the cooling output of the adsorption refrigeration apparatus can be improved as described above, and if the output is the same, the amount of adsorbent in the adsorber can be increased. It is possible to reduce the number of the devices, thereby reducing the size of the entire apparatus.

  Then, the adsorption refrigeration apparatus of each of the above inventions is provided in an engine-driven air conditioner equipped with a vapor compression refrigeration apparatus as in the invention of claim 7, and the vapor compression refrigeration apparatus of the vapor compression refrigeration apparatus is provided by an evaporator of the adsorption refrigeration apparatus. By cooling the refrigerant flowing through the refrigerant circuit as an object to be cooled, the cooling capacity of the engine-driven air conditioner can be improved. In particular, since the adsorption refrigeration apparatus of each of the above inventions can be reduced in size, it is extremely suitable as a vehicle air conditioner equipped with an engine.

It is a circuit diagram of the vehicle air conditioner of one Example of the engine drive type air conditioner provided with the adsorption refrigeration apparatus which shows one Example of this invention. It is a circuit diagram of the vehicle air conditioner in the medium adsorption mode of the adsorption refrigeration apparatus in FIG. It is a circuit diagram of the vehicle air conditioner in the medium desorption preparation mode of the adsorption refrigeration apparatus in FIG. It is a circuit diagram of the vehicle air conditioner in the medium detachment mode of the adsorption refrigeration apparatus in FIG. It is a figure explaining transition of the condensation temperature (temperature of a condenser) of the adsorption refrigeration apparatus in FIG. It is a circuit diagram of the adsorption | suction type freezing apparatus which shows the other Example of this invention. FIG. 7 is a circuit diagram in a medium adsorption mode of the adsorption refrigeration apparatus of FIG. 6. FIG. 7 is a circuit diagram in a medium desorption preparation mode of the adsorption refrigeration apparatus of FIG. 6. FIG. 7 is a circuit diagram in a medium detachment mode of the adsorption refrigeration apparatus of FIG. 6. FIG. 7 is a circuit diagram of still another embodiment of the adsorption refrigeration apparatus of FIG. 6.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The adsorption refrigeration apparatus of each embodiment is mounted on a vehicle and functions as a part of a vehicle air conditioner. The adsorption refrigeration apparatus is used for supercooling refrigerant flowing through a refrigerant circuit of a vapor compression refrigeration apparatus for air conditioning and has a cooling capacity. It contributes to improvement.

  Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a circuit diagram of a vehicle air conditioner 1 according to a first embodiment of an engine driven air conditioner. The vehicle air conditioner 1 of the embodiment cools the air in the passenger compartment of a vehicle (for example, an automobile) (not shown), and exhibits a refrigeration capacity by compressing, condensing, and evaporating a refrigerant (for example, R-134a). A vapor compression refrigeration apparatus 2 having a refrigerant circuit that performs the above and an evaporator 3 incorporated in the refrigerant circuit of the vapor compression refrigeration apparatus 2, and use the desorption / adsorption action of a medium (for example, water) by an adsorbent. And the adsorption refrigeration apparatus 4 of the present invention that exhibits a cold output.

  The vapor compression refrigeration apparatus 2 of the embodiment includes a refrigerant compressor 7, a refrigerant condenser 8, an expansion valve 9 serving as a decompression unit, and a refrigerant evaporator 11 that are driven by an engine 6 of a vehicle via an electromagnetic clutch. Etc. are connected in a circular pipe to form a refrigerant circuit. The refrigerant compressor 7 and the refrigerant condenser 8 are provided in the engine room of the vehicle, and the refrigerant condenser 8 is air-cooled by the condenser blower 10.

  The engine 6 is an internal combustion engine that serves as a driving source for the vehicle. The cooling system 13 (engine cooling system) of the engine 6 uses the water pump 14 to circulate cooling water (engine cooling water: second medium) between the engine 6 and the radiator 16. The radiator 16 includes a radiator blower 17, and cools the engine 6 by cooling the engine 6 to a high temperature by heat exchange with the outside air and returns it to the engine 6.

  When the refrigerant compressor 7 is operated by the engine 6 via an electromagnetic clutch, high-temperature and high-pressure gas refrigerant is discharged and flows into the refrigerant condenser 8. Therefore, the refrigerant is air-cooled to be condensed and liquefied, depressurized by the expansion valve 9, and then flows into the refrigerant evaporator 11. The refrigerant that has flowed into the refrigerant evaporator 11 evaporates there, and exhibits the refrigerating capacity by the endothermic action (latent heat) generated at this time. The refrigerant evaporator 11 is disposed in the passenger compartment, and air in the passenger compartment is ventilated by the cool air circulation blower 18 and cooled, and then blown out into the passenger compartment. Thereby, the passenger compartment is air-conditioned (cooled) to a predetermined temperature. Further, the refrigerant evaporated in the refrigerant evaporator 11 is sucked into the refrigerant compressor 7 again.

  Between the outlet side of the refrigerant condenser 8 and the inlet side of the expansion valve 9 of the vapor compression refrigeration apparatus 2, the evaporator 3 constituting the adsorption refrigeration apparatus 4 is incorporated as a supercooling heat exchanger. Hereinafter, the refrigerant pipe between the outlet of the refrigerant condenser 8 and the inlet of the expansion valve 9 is designated as 12. The adsorption refrigeration apparatus 4 is also provided in the engine room.

  The adsorption refrigeration apparatus 4 of this embodiment includes an adsorber 21, a condenser 23 connected by piping to a medium outlet of the adsorber 21 via a first valve 22, and a second outlet at a medium outlet of the condenser 23. And the evaporator 3 connected by the liquid supply pipe 26 via the valve 24, and the vapor recovery pipe 27 of the evaporator 3 is connected to the medium inlet of the adsorber 21 via the third valve 28. Thus, a medium circuit is configured, and water (vapor) is sealed as an adsorbing medium under vacuum in the medium circuit.

  In the adsorber 21, an adsorbent 21A (water adsorbent) such as silica gel or zeolite is accommodated in the embodiment. The adsorbent 21A has a property that the amount of adsorbable vapor medium (adsorption capacity) increases as the relative humidity of the atmosphere increases. Accordingly, when the adsorbent 21A is heated, the relative humidity in the vicinity of the surface of the adsorbent 21A is reduced and the adsorption capacity is reduced, so that the adsorbed medium is desorbed and released. On the other hand, when the adsorbent 21A is cooled, the relative humidity in the vicinity of the surface of the adsorbent 21A increases and the adsorption capacity increases, so the medium is adsorbed by the increase.

  In the embodiment, the cooling water (engine cooling water) is used as a heating means for the adsorbent 21A in the adsorber 21. For this purpose, a heating pipe 31 is provided so as to be in thermal contact with the adsorbent 21A in the adsorber 21. The heating pipe 31 is connected to the engine cooling system 13 via the fourth valve 32 in parallel with the radiator 16. By opening the fourth valve 32, high-temperature cooling water is circulated through the heating pipe 31. The adsorbent 21A can be heated.

  Further, as a cooling means for the adsorbent 21 </ b> A in the adsorber 21, an adsorption blower 29 is used. By operating the suction fan 29, the adsorbent 21A can be air-cooled by the outside air.

  The condenser 23 cools and vaporizes the vapor medium desorbed and released from the adsorbent 21A by the adsorber 21, and a condensing blower 33 is used for the cooling. That is, the adsorption refrigeration apparatus 4 of this embodiment is an air-cooled adsorption refrigeration apparatus.

  The condenser 23 is provided with a cold storage agent 34 in the present invention. As the cool storage agent 34, a substance having a large heat capacity (specific heat) such as water (using sensible heat) or a phase change substance such as paraffin (using latent heat) is used. In the embodiment, the cold storage agent 34 is provided in the pipe through which the medium flows in the condenser 23. However, if the refrigerant 23 is provided in a heat exchange relationship with the condenser 23 and is air-cooled together by the condenser blower 33, An arrangement location and a form are not limited.

  The evaporator 3 includes a vacuum container 3A, and water as a medium liquefied by the condenser 23 is supplied into the vacuum container 3A through a liquid supply pipe 26, and is disposed below the condenser 23. In this embodiment, the refrigerant pipe 12 is drawn into the vacuum vessel 3 </ b> A, and the medium (water) supplied from the liquid supply pipe 26 and the refrigerant flowing in the refrigerant pipe 12 are subjected to heat exchange. Then, the vapor medium that has evaporated in the vacuum vessel 3A and cooled the refrigerant is returned to the adsorber 21 via the vapor recovery pipe 27 and is adsorbed again by the adsorbent 21A.

  Next, the operation of the vehicle air conditioner 1 with the above configuration, centering on the operation of the adsorption refrigeration apparatus 4, will be described. The adsorption refrigeration apparatus 4 periodically repeats the medium adsorption mode (FIG. 2), the medium desorption preparation mode (FIG. 3), and the medium desorption mode (FIG. 4). In each figure, the valve indicated by white is opened and the valve indicated by black is closed. In addition, it is assumed that the blower shown in white is operated and the blower shown in black is stopped.

(Media adsorption mode)
In the medium adsorption mode shown in FIG. 2, the third valve 28 is opened, and the first valve 22 and the second valve 24 are closed. Then, the fourth valve 32 is also closed to stop the heating of the adsorbent 21A in the adsorber 21 by the cooling water (engine cooling water). Further, the adsorption blower 29 is operated, whereby the adsorbent 21 </ b> A in the adsorber 21 is cooled by the adsorption blower 29.

  When the adsorbent 21A in the adsorber 21 is cooled, the internal relative humidity increases, so the adsorption capacity of the adsorbent 21A increases, and the medium (vapor) in the adsorber 21 is adsorbed by the adsorbent 21A. . As a result, the pressure in the adsorber 21 is reduced, and this pressure drop is transmitted to the vacuum container 3 </ b> A of the evaporator 3 through the third valve 28 and the vapor recovery pipe 27. Due to the pressure drop in the vacuum container 3A of the evaporator 3, the medium (water) stored inside evaporates. The medium (vapor medium) evaporated in the vacuum vessel 3A is recovered by the vapor recovery pipe 27, returns to the adsorber 21 through the third valve 28, and is adsorbed by the adsorbent 21A. Since the heat is taken from the refrigerant flowing through the refrigerant pipe 12 by the evaporation action at this time, the refrigerant is cooled.

  As described above, since the refrigerant after being condensed by the refrigerant condenser 8 of the vapor compression refrigeration apparatus 2 flows through the refrigerant pipe 12, the refrigerant is supercooled by the evaporator 3. The supercooling by the evaporator 3 of the adsorption refrigeration apparatus 4 improves the cooling capacity of the vapor compression refrigeration apparatus 2.

  Since the first valve 22 and the second valve 24 are closed during the medium adsorption mode, the condenser 23 does not function. However, in the present invention, the condenser blower 33 is operated. By the operation of the condenser blower 33, the condenser 23 and the cool storage agent 34 provided on the condenser 23 are air-cooled by the outside air, so that their temperatures are lowered and the cool storage agent 34 mainly stores cold heat.

(Medium release preparation mode)
Next, the adsorption refrigeration apparatus 4 shifts to the medium desorption preparation mode shown in FIG. In the medium desorption preparation mode shown in FIG. 3, the first valve 22, the second valve 24, and the third valve 28 are closed to disconnect the adsorber 21, the condenser 23, and the evaporator 3 (non-communication state). . Then, the fourth valve 32 is opened in order to start heating the adsorbent 21A in the adsorber 21 by the cooling water (engine cooling water). Thereby, since a part of high-temperature cooling water (engine cooling water) is distribute | circulated to the heating pipe 31, the adsorbent 21A in the adsorber 21 is heated.

  Since the adsorption blower 29 is stopped and the valves 22, 24, 28 are also closed, the temperature of the adsorbent 21A in the adsorber 21 rises rapidly, and the relative humidity in the adsorber 21 also increases. It will drop quickly.

  During the medium desorption preparation mode, the condenser 23 does not function because the first valve 22 and the second valve 24 are closed, but the condenser blower 33 is operated in the present invention. Due to the operation of the condenser blower 33, the condenser 23 and the cool storage agent 34 provided on the condenser 23 are continuously cooled by the outside air, so that their temperature further decreases. As a result, the cold energy is mainly stored in the cold storage agent 34 before entering the medium detachment mode described later.

(Medium release mode)
Next, the adsorption refrigeration apparatus 4 shifts to the medium detachment mode shown in FIG. In the medium detachment mode shown in FIG. 4, the first valve 22 and the second valve 24 are opened, and the third valve 28 is closed. Further, the fourth valve 32 continues to open and continues to heat the adsorbent 21A in the adsorber 21 by the cooling water (engine cooling water). The suction fan 29 is also stopped in this medium detachment mode.

  When the adsorbent 21A in the adsorber 21 is heated by the cooling water (engine cooling water), the relative humidity in the adsorber 21 continues to decrease and the adsorption capacity decreases, so that the medium adsorbed on the adsorbent 21A (Vapor) is desorbed and released. Then, since the pressure in the adsorber 21 increases, the desorbed medium (vapor) is pushed out to the condenser 23 via the first valve 22.

  In this medium desorption mode, the condensing blower 33 continues to operate, so that the medium (steam) that has flowed into the condenser 23 via the first valve 22 is air-cooled. Further, since the cool storage agent 34 is air-cooled during the above-described medium adsorption mode and medium desorption preparation mode, and the cold heat is stored, the medium (steam) flowing into the condenser 23 is cooled by the condensing fan 33. In addition, the regenerator 34 also receives a cooling action and condensates.

  The liquefied medium (water) is supplied from the liquid supply pipe 26 into the vacuum container 3A of the evaporator 3 through the second valve 24 and stored. And it is used for cooling the refrigerant | coolant which flows through the refrigerant | coolant piping 12 by evaporating in the medium adsorption | suction mode performed next.

  Here, FIG. 5 shows the transition of the temperature (condensation temperature) of the condenser 23 in the above-described medium adsorption mode, medium desorption preparation mode, and medium desorption mode. In the figure, L1 indicates a case where no regenerator is provided in the condenser 23, and L2 indicates a case where a regenerator 34 is provided in the condenser 23 as in the present invention.

  When no regenerator is provided in the condenser 23, the medium (steam) whose temperature has increased due to the heating action from the cooling water (engine cooling water) flowing through the heating pipe 31 is condensed via the first valve 22 in the medium desorption mode. Since it flows into the condenser 23, the temperature of the condenser 23 increases rapidly as indicated by L1 in FIG. During the period from the medium adsorption mode to the medium desorption preparation mode, the first valve 22 is closed and the flow of the medium (vapor) into the condenser 23 is stopped, so that the temperature of the condenser 23 rapidly decreases. It shows the change of doing.

  On the other hand, when the condenser 23 is provided with the regenerator 34 as in the present invention and the condenser blower 33 is operated in the same manner as in the medium desorption mode during the period from the medium adsorption mode to the medium desorption preparation mode, L2 in FIG. As shown in FIG. 3, in the medium adsorption mode and the medium desorption preparation mode, the cooling capacity of the condenser blower 33 is consumed to cool the regenerator 34, so that the temperature drop of the condenser 23 is slower than in the case of L1. Become.

  However, in the medium desorption mode, the cooling action by the cold stored in the cold storage agent 34 cooled during the medium adsorption mode and the medium desorption preparation mode works, so the temperature rise of the condenser 23 is higher than in the case of L1. Remarkably low. When the temperature (condensation temperature) of the condenser 23 at the time of desorption in the medium desorption mode decreases, the condensing pressure Pc corresponding thereto decreases, so that the vapor medium adsorption amount Xd of the adsorbent 21A at the time of desorption is as described above. Less.

  If the vapor medium adsorption amount Xd at the time of desorption decreases, the adsorption amount difference ΔX by the adsorbent 21A increases, and as a result, the cold output of the adsorption refrigeration apparatus 4 can be improved. Further, since the amount of the adsorbent 21A in the adsorber 21 can be reduced if the output is the same, it is possible to reduce the size of the adsorption refrigeration apparatus 4, and for the vehicle air conditioner 1 Is very suitable.

  Next, a case where the present invention is applied to a so-called water-cooled adsorption refrigeration apparatus will be described as another embodiment of the present invention with reference to FIGS. In addition, in each figure, what is shown with the same code | symbol as FIG. 1 thru | or FIG. 5 shall show | play the same or similar function. Although not shown in FIGS. 6 to 9, the vehicle air conditioner 1 of this example is also provided with the vapor compression refrigeration device 2 shown in FIGS. 1 to 4, and the engine 6 uses a refrigerant compressor via an electromagnetic clutch. 7 is to be driven.

  That is, in this case as well, the cooling system 13 (engine cooling system) of the engine 6 uses the water pump 14 to circulate cooling water (engine cooling water: second medium) between the engine 6 and the radiator 16. . Then, outside air is passed through the radiator 16 by the radiator blower 17, the engine 6 is cooled and the high-temperature cooling water is cooled and returned to the engine 6.

  And the evaporator 3 which comprises the adsorption | suction type freezing apparatus 4 also in this case between the exit side of the refrigerant condenser 8 mentioned above of the said vapor compression type freezing apparatus 2 and the inlet side of the expansion valve 9 which are not illustrated here. Is incorporated as a supercooling heat exchanger. Again, the refrigerant piping 12 between the outlet of the refrigerant condenser 8 and the inlet of the expansion valve 9 is indicated by 12.

  In FIG. 6, the adsorption refrigeration apparatus 4 of this embodiment also includes an adsorber 21, a condenser 23 connected to a medium outlet of the adsorber 21 through a first valve 22, and a medium outlet of the condenser 23. And the evaporator 3 connected by the liquid supply pipe 26 via the second valve 24, and the vapor recovery pipe 27 of the evaporator 3 is connected to the medium inlet of the adsorber 21 via the third valve 28. By being connected, a medium circuit is configured, and water (vapor) is sealed as an adsorbing medium under vacuum in the medium circuit.

  An adsorbent 21A similar to that described above is accommodated in the adsorber 21. In this embodiment, the cooling water (engine cooling water) is used as heating means and cooling means for the adsorbent 21A in the adsorber 21 and cooling means for the condenser 23. Therefore, the suction fan 29 and the condensation fan 33 described above are omitted.

  Instead, a cooling water pipe 36 is provided so as to be in thermal contact with the adsorbent 21 </ b> A in the adsorber 21. The inlet side of the cooling water pipe 36 is connected to the outlet of the three-way valve 37, and the outlet side of the cooling water pipe 36 is connected to the inlet of another three-way valve 38. One inlet of the three-way valve 37 is connected to the engine cooling system 13 on the outlet side of the water pump 14 via a communication pipe 39, and one outlet of the three-way valve 38 is connected to the radiator 16 via a communication pipe 41. Is connected to the engine cooling system 13 on the outlet side.

  A cooling water cooling system 42 is connected between the other inlet of the three-way valve 37 and the other outlet of the three-way valve 38. The cooling water cooling system 42 includes a cooling water cooler 43 for cooling the cooling water (engine cooling water), another water pump 44 provided on the downstream side, and the cooling water cooler 43 through the outside air. And a cooling water cooling blower 46 for cooling by air, the outlet of the water pump 44 is connected to the other inlet of the three-way valve 37, and the inlet of the cooling water cooler 43 is connected to the other outlet of the three-way valve 38. It is connected.

  Further, the condenser 23 is provided with a condenser cooling pipe 47 penetrating in a heat exchange relationship, and the inlet side of the condenser cooling pipe 47 is connected to the cooling water cooling system 42 on the outlet side of the water pump 44. The outlet side of the condenser cooling pipe 47 is connected to the cooling water cooling system 42 on the inlet side of the cooling water cooler 43 through a fifth valve 48. This cooling water cooling system 42 is also filled with cooling water similar to engine cooling water.

  In this embodiment, the cooling water cooler 43 is provided with the same cool storage agent 34 as described above. In the embodiment, the regenerator 34 is provided in the pipe through which the cooling water flows in the cooling water cooler 43, but is provided in a heat exchange relationship with the cooling water cooler 43 and air-cooled together by the cooling water cooling fan 46. If it is a shape, the arrangement location and form are not limited.

  Next, the operation of the vehicle air conditioner 1 with the above configuration, centering on the operation of the adsorption refrigeration apparatus 4 in this case, will be described. Also in this case, the adsorption refrigeration apparatus 4 periodically repeats the medium adsorption mode (FIG. 7), the medium desorption preparation mode (FIG. 8), and the medium desorption mode (FIG. 9). In this case as well, the valves and three-way valve inlets and outlets shown in white in the drawings are open, and the valves and three-way valve inlets and outlets shown in black are closed. In addition, it is assumed that the blower and pump shown in white are operated and the pump shown in black is stopped.

(Media adsorption mode)
In the medium adsorption mode shown in FIG. 7, the third valve 28 is opened, and the first valve 22 and the second valve 24 are closed. Then, the water pump 44 is operated to cool the adsorbent 21A in the adsorber 21 with cooling water, one inlet of the three-way valve 37 is closed and the other inlet and outlet are communicated, and one of the three-way valves 38 is connected. The outlet is closed to allow the inlet to communicate with the other outlet, and the fifth valve 48 is closed. Further, the cooling water cooling blower 46 is operated to cool the cooling water cooler 43 by air. As will be described later, the cooling water cooler 43 also receives a cooling action from the cool storage agent 34 whose temperature is still lowered at the end of the medium desorption mode before the medium adsorption mode.

  As a result, the cooling water is cooled in the cooling water cooler 43, and this cooled cooling water is sucked by the water pump 44 and flows into the cooling water pipe 36 through the three-way valve 37. The agent 21A is cooled by the cooling water flowing in the cooling water pipe 36. The cooling water passing through the cooling water pipe 36 repeats circulation through the three-way valve 38 and returning to the cooling water cooler 43 again.

  When the adsorbent 21A in the adsorber 21 is cooled, the internal relative humidity increases in the same manner as described above, so that the adsorption capacity of the adsorbent 21A increases, and the medium (vapor) in the adsorber 21 becomes the adsorbent 21A. Adsorbed. As a result, the pressure in the adsorber 21 is reduced, and this pressure drop is transmitted to the vacuum container 3 </ b> A of the evaporator 3 through the third valve 28 and the vapor recovery pipe 27. Due to the pressure drop in the vacuum container 3A of the evaporator 3, the medium (water) stored inside evaporates. The medium (vapor medium) evaporated in the vacuum vessel 3A is recovered by the vapor recovery pipe 27, returns to the adsorber 21 through the third valve 28, and is adsorbed by the adsorbent 21A. Since the heat is taken away from the refrigerant flowing through the refrigerant pipe 12 by the evaporation action at this time, the refrigerant is cooled.

  Since the refrigerant after being condensed by the refrigerant condenser 8 of the vapor compression refrigeration apparatus 2 flows through the refrigerant pipe 12 as described above, the refrigerant is similarly supercooled by the evaporator 3. Due to the supercooling by the evaporator 3 of the adsorption refrigeration apparatus 4, the cooling capacity of the vapor compression refrigeration apparatus 2 is improved.

  Since the first valve 22 and the second valve 24 are closed during the medium adsorption mode, the condenser 23 does not function. Further, since the fifth valve 48 is also closed, the cooling water does not flow into the condenser cooling pipe 47.

  Here, in the seed water-cooled adsorption refrigeration apparatus 4, generally, the heat dissipation amount in the cooling water cooler 43 in the medium desorption mode <the heat dissipation amount in the cooling water cooler 43 in the medium adsorption mode. Therefore, the cool storage agent 34 that has stored cold in the medium desorption preparation mode, which will be described later, has a cooling capability even after cooling the cooling water circulated to the condenser 23 in the subsequent medium desorption mode. Therefore, since the cooling water circulated to the adsorber 21 in the subsequent medium adsorption mode is also cooled from the cool storage agent 34 as described above, the temperature of the adsorbent 21A in this medium adsorption mode is also not present in the cool storage agent 34. Lower than Lowering the temperature of the adsorbent 21 </ b> A during the medium adsorption mode increases the medium adsorption capacity, leading to an increase in cold output, and also contributes to downsizing of the entire apparatus.

(Medium release preparation mode)
Next, the adsorption refrigeration apparatus 4 shifts to the medium desorption preparation mode shown in FIG. In the medium desorption preparation mode shown in FIG. 8, the first valve 22, the second valve 24, and the third valve 28 are closed to disconnect the adsorber 21, the condenser 23, and the evaporator 3 (non-communication state). . Then, in order to start heating the adsorbent 21A in the adsorber 21 by the cooling water (engine cooling water), the water pump 44 of the cooling water cooling system 42 is stopped, the other inlet of the three-way valve 37 is closed, And the other outlet of the three-way valve 38 is closed to allow the inlet and one outlet to communicate with each other.

  Since the water pump 14 is in operation, a part of the high-temperature cooling water (engine cooling water) whose temperature has been increased by the engine 6 passes through the three-way valve 37 from the communication pipe 39 and flows into the cooling water pipe 36. Thereby, the adsorbent 21A in the adsorber 21 is heated by the cooling water (engine cooling water) flowing through the cooling water pipe 36. Note that the cooling water (engine cooling water) that has passed through the cooling water pipe 36 passes through the three-way valve 38 and repeats circulation from the communication pipe 41 to the engine 6 again.

  In addition, since each valve 22, 24, 28 is also closed, the temperature of the adsorbent 21A in the adsorber 21 rises rapidly, and the relative humidity in the adsorber 21 also falls rapidly. Become.

  During the medium desorption preparation mode, the condenser 23 does not function because the first valve 22 and the second valve 24 are closed. In this embodiment, the cooling water cooling blower 46 is operated. Due to the operation of the cooling water cooling blower 46, the cooling water cooler 43, the internal cooling water, and the cool storage agent 34 provided on the cooling water cooler 43 are air-cooled by the outside air, so that the temperature rapidly decreases. Thus, cold heat is stored in the cooling water cooler 43, the internal cooling water, and the cold storage agent 34 before entering the medium detachment mode described later.

(Medium release mode)
Next, the adsorption refrigeration apparatus 4 shifts to the medium detachment mode shown in FIG. In the medium detachment mode shown in FIG. 9, the first valve 22 and the second valve 24 are opened, and the third valve 28 is closed. Further, by closing the other inlet of the three-way valve 37 and continuously communicating one inlet and the outlet, and closing the other outlet of the three-way valve 38 and continuing to communicate the inlet and one outlet, high-temperature cooling water (engine The adsorbent 21A in the adsorber 21 is continuously heated by (cooling water).

  When the adsorbent 21A in the adsorber 21 is heated by the cooling water (engine cooling water), the relative humidity in the adsorber 21 continues to decrease and the adsorption capacity decreases, so that the medium adsorbed on the adsorbent 21A (Vapor) is desorbed and released. Then, since the pressure in the adsorber 21 increases, the desorbed medium (vapor) is pushed out to the condenser 23 via the first valve 22.

  On the other hand, the water pump 44 of the cooling water cooling system 42 resumes operation, the fifth valve 48 is opened, and the cooling water cooling blower 46 is continuously operated. Thus, the cooling water cooled by the cooling water cooler 43 by the outside air and the regenerator 34 is sucked by the water pump 44 and flows into the condenser cooling pipe 47, so that the condenser 23 passes through the condenser cooling pipe 47. It is cooled by the flowing cooling water. The cooling water that has passed through the condenser cooling pipe 47 passes through the fifth valve 48 and repeats circulation to return to the cooling water cooler 43 again.

  Thereby, the medium (steam) flowing into the condenser 23 through the first valve 22 is cooled by the cooling water flowing in the condenser cooling pipe 47. Further, since the cool storage agent 34 is air-cooled during the above-described medium adsorption mode and medium desorption preparation mode (mainly during the medium desorption preparation mode) and cold energy is stored, the medium (vapor) flowing into the condenser 23 is stored. In addition to air cooling by the cooling water cooling blower 46, the cooling water is cooled by the cooling water that has been cooled by the regenerator 34, and is condensed and liquefied.

  The liquefied medium (water) is supplied from the liquid supply pipe 26 into the vacuum container 3A of the evaporator 3 through the second valve 24 and stored. And it is used for cooling the refrigerant | coolant which flows through the refrigerant | coolant piping 12 by evaporating in the medium adsorption | suction mode performed next.

  When the regenerator 34 is provided in the cooling water cooler 43 in this way, in the medium desorption mode, the cooling water cooled during the medium adsorption mode and the medium desorption preparation mode (mainly during the medium desorption preparation mode). Since the cooling action by the cold heat stored in the cooler 43 and the internal cooling water and the cold storage agent 34 works, the temperature rise of the condenser 23 is remarkably reduced. When the temperature of the condenser 23 (condensation temperature) at the time of desorption in the medium desorption mode decreases, the condensing pressure Pc corresponding thereto decreases. Xd decreases.

  If the vapor medium adsorption amount Xd at the time of desorption decreases, the adsorption amount difference ΔX by the adsorbent 21A increases, and as a result, the adsorption refrigeration apparatus 4 in this case can also effectively improve its cold output. become able to. Further, since the amount of the adsorbent 21A in the adsorber 21 can be reduced if the output is the same, it is possible to reduce the size of the adsorption refrigeration apparatus 4, and for the vehicle air conditioner 1 Is very suitable.

  Note that, after the medium desorption mode is completed, the adsorption refrigeration apparatus 4 again shifts to the medium adsorption mode. However, as described above, the cool storage agent 34 maintains cold heat even at the end of the medium desorption mode. Therefore, as described above, this contributes to lowering the temperature of the adsorbent 21A in the subsequent medium adsorption mode.

  In the second embodiment, the water pump 44 of the cooling water cooling system 42 is stopped and the fifth valve 48 is closed in the medium detachment preparation mode. Similarly, the water pump 44 may be operated to open the fifth valve 48 and circulate the cooling water cooled by the cooling water cooling blower 46 to the condenser 23. By doing so, the temperature of the condenser 23 and the condenser cooling pipe 47 can also be lowered before entering the medium desorption mode, and the subsequent medium desorption mode can be started quickly.

  Further, in the second embodiment, the condenser 23 is provided in the condenser cooling pipe 47 branched from the cooling water cooling system 42 and the cooling water cooler 43 and the condenser 23 are arranged in parallel. The condenser 23 is arranged between the outlet of the water pump 44 and the branch point of the condenser cooling pipe 47, that is, connected in series with the cooling water cooler 43, and the condenser is cooled by the cooling water cooling system 42 in that portion. 23 may be cooled. However, also in this case, it is necessary to return the cooling water that has passed through the condenser 23 to the inlet side of the cooling water cooler 43 by the condenser cooling pipe 47.

  Next, FIG. 10 shows still another embodiment of the vehicle air conditioner 1 using the water-cooled adsorption refrigeration apparatus 4. In this figure, the same reference numerals as those in FIGS. 6 to 9 denote the same or similar functions. In this case, unlike the case of FIG. 6, the regenerator 34 is provided not in the cooling water cooler 43 but in the condenser 23 in a heat exchange relationship. More specifically, the cool storage agent 34 is provided in a condenser cooling pipe 47 in a portion that penetrates the condenser 23. In this case, as shown in FIG. 10, the cooling water cooling blower 46 and the water pump 44 are also operated in the medium detachment preparation mode, and the fifth valve 48 is opened.

  Even with such a configuration, the cooling water cooler 43 and the internal cooling water are cooled during the medium desorption preparation mode, and the regenerator provided in the condenser 23 by the cooling water cooled by the cooling water cooler 43. 34 is cooled and cold energy is stored in it, and it is possible to effectively improve the cold power output in the subsequent medium detachment mode.

  Here, in the second and third embodiments, the regenerator 34 is provided in the cooling water cooler 43 and the condenser 23 in the so-called water-cooled adsorption refrigeration apparatus 4, and the regenerator 34 is provided in the medium desorption preparation mode. Although it is configured to store cold heat, the cooling water cooler 43 may be simply air-cooled by the cooling water cooling fan 46 in the medium detachment preparation mode without providing a cold storage agent (invention of claim 6). .

  That is, in that case, the cooling water itself in the cooling water cooler 43 serves as a cold storage agent, and functions to store cold heat during the medium detachment preparation mode. Even with such a configuration, it is possible to improve the cooling output in the subsequent medium detachment mode.

  In each of the above embodiments, the adsorption refrigeration apparatus 4 of the present invention is applied to the vehicle air conditioner 1. However, the invention of the first to sixth aspects is not limited thereto, and other refrigeration / air conditioners or refrigerants are used. Needless to say, the present invention can be applied to various apparatuses having other cooling targets. In each embodiment, the engine 6 is used as a heat source for heating the adsorber. However, the present invention is not limited to this, and other heat sources (such as an electric heater) may be used. Furthermore, although the refrigerant compressor 7 of the vapor compression refrigeration apparatus 2 is driven by the engine 6 of the vehicle, the drive source is not limited thereto, and an electric compressor driven by an electric motor may be used.

  In each embodiment, the vehicle air conditioner 1 that air-conditions the interior of the vehicle has been described as an example. However, the invention of claim 7 is not limited thereto, and is applied to cogeneration and GHP driven by an engine. Is also effective.

DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 2 Vapor compression refrigeration device 3 Evaporator 4 Adsorption refrigeration device 6 Engine 12 Refrigerant piping 14, 44 Water pump 21 Adsorber 21A Adsorbent 22, 24, 28, 32, 48 Valve 23 Condenser 29 Adsorption Blower 31 Heating pipe 33 Condensing fan 34 Coolant 36 Cooling water pipe 37, 38 Three-way valve 43 Cooling water cooler 46 Cooling water cooling blower 47 Condenser cooling pipe

Claims (7)

An adsorber including an adsorbent that adsorbs a medium by being cooled in a medium adsorption mode and desorbs the medium by being heated in a medium desorption mode; and the medium on the adsorbent in the medium adsorption mode An evaporator that cools the object to be cooled as the medium evaporates, and a condenser that condenses the medium desorbed from the adsorbent in the medium desorption mode and returns it to the evaporator In an adsorption refrigeration apparatus comprising:
An adsorption refrigeration apparatus comprising a cold storage agent in heat exchange relation with the condenser.   2. The adsorption refrigeration apparatus according to claim 1, further comprising a condensing fan for air-cooling the condenser in the medium desorption mode, and operating the condensing fan in the medium adsorption mode.   After the medium adsorption mode and before executing the medium desorption mode, execute a medium desorption preparation mode in which the adsorber, the evaporator, and the condenser are brought into a non-communication state and the adsorbent is heated. The adsorption refrigeration apparatus according to claim 2, wherein the condensing fan is operated even in the medium desorption preparation mode. An adsorber including an adsorbent that adsorbs a medium by being cooled in a medium adsorption mode and desorbs the medium by being heated in a medium desorption mode; and the medium on the adsorbent in the medium adsorption mode An evaporator that cools the object to be cooled as the medium evaporates, and a condenser that condenses the medium desorbed from the adsorbent in the medium desorption mode and returns it to the evaporator And an adsorption refrigeration apparatus including a cooling water cooler for cooling the cooling water for cooling the condenser in the medium desorption mode, and cooling the adsorber in the medium adsorption mode.
An adsorptive refrigeration apparatus, wherein a regenerator is provided in a heat exchange relationship with the cooling water cooler or the condenser. A cooling water cooling blower for air cooling the cooling water cooler;
After the medium adsorption mode and before executing the medium desorption mode, execute a medium desorption preparation mode in which the adsorber, the evaporator, and the condenser are brought into a non-communication state and the adsorbent is heated. ,
The adsorption refrigeration apparatus according to claim 4, wherein the cooling water cooling blower is also operated in the medium desorption preparation mode. An adsorber including an adsorbent that adsorbs a medium by being cooled in a medium adsorption mode and desorbs the medium by being heated in a medium desorption mode; and the medium on the adsorbent in the medium adsorption mode An evaporator that cools the object to be cooled as the medium evaporates, and a condenser that condenses the medium desorbed from the adsorbent in the medium desorption mode and returns it to the evaporator Cooling the adsorber in the medium adsorption mode, and cooling the cooling water in the medium desorption mode to cool the cooling water for cooling the condenser, and air cooling the cooling water cooler In an adsorption refrigeration apparatus provided with a cooling water cooling fan,
After the medium adsorption mode and before executing the medium desorption mode, execute a medium desorption preparation mode in which the adsorber, the evaporator, and the condenser are brought into a non-communication state and the adsorbent is heated. ,
The adsorption refrigeration apparatus, wherein the cooling water cooling blower is operated even in the medium desorption preparation mode. A vapor compression refrigeration apparatus, and the adsorption refrigeration apparatus according to any one of claims 1 to 6,
An engine-driven air conditioner that cools the refrigerant flowing through the refrigerant circuit of the vapor compression refrigeration apparatus as the cooling target by the evaporator of the adsorption refrigeration apparatus.

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