JP6281833B2 - Vapor valve for adsorption refrigerator and adsorption refrigerator - Google Patents

Description

  The present invention relates to an adsorption-type refrigerator air valve and an adsorption-type refrigerator that are used in an adsorption-type refrigerator having an adsorbent that adsorbs and releases a refrigerant, and controls the circulation of the refrigerant.

  In recent years, an adsorption refrigeration machine excellent in thermal efficiency, maintenance cost, etc. has attracted attention as a cold heat source. In the adsorption refrigerator, heat transfer tubes are inserted into two adsorption / desorption devices, and a solid adsorbent such as silica gel that absorbs and discharges refrigerant is attached to the surface of the heat transfer tubes arranged in each adsorption / desorption device. ing. Each adsorption / desorption device includes an evaporator that vaporizes the refrigerant and a condenser that condenses and liquefies the refrigerant. Each adsorption / desorption unit is provided with a vapor valve that communicates in one direction with the evaporator and the condenser, and the vapor valve can be alternately opened and closed to allow the adsorption / desorption unit, the evaporator and the condenser to communicate with each other individually. I have to. Then, the space in each adsorption / desorption device, the evaporator and the condenser is filled with a vapor refrigerant such as water at a pressure close to a vacuum state so that the space can be circulated, and the heat transfer tubes in each adsorption / desorption device The cooling operation is performed by alternately switching the period in which the cooling water is allowed to flow to allow the adsorption / desorption device to function as an adsorber and the period in which the hot water is allowed to flow to the heat transfer tube to function as the desorption device. Is going.

  This steam valve is, for example, as disclosed in Patent Document 1, a plurality of steam valves are opened and closed by a pressure difference formed between each adsorption / desorption device and an evaporator or a condenser. The vapor valve has a check valve structure that allows vapor refrigerant to pass only in one direction. The structure of the steam valve disclosed in Patent Document 1 includes a spherical sphere arranged in a communication path between each adsorption / desorption device and the evaporator, an O-ring that seals the inside and outside in close contact with the sphere, and the like. It is comprised by this sealing member.

  Further, as a steam valve disposed in a communication path between each adsorption / desorption device and a condenser, as disclosed in Patent Document 2, a plate that enables the circulation of refrigerant vapor from the adsorption / desorption device to the condenser The valve body is provided in the check valve structure by opening the valve body in only one direction, and the vapor refrigerant does not flow backward from the condenser to each adsorption / desorption device and from each adsorption / desorption device to the evaporator. A structure is also proposed.

JP 2012-202583 A JP 2011-202922 A

  In the case of the steam valves disclosed in Patent Documents 1 and 2, since the spherical valve body and the sealing material are arranged in a tubular passage that communicates the spaces in the adsorption / desorption devices, the evaporator, and the condenser, There was a problem that the internal structure became complicated. Furthermore, since the pressure difference in each space within the vacuum vessel is a slight difference, the response of the spherical valve element was not sufficient. The valve body disclosed in Patent Document 2 also has a structure that opens and closes by lifting up a plate-like valve, and as with the above, a favorable pressure difference cannot be obtained with a small pressure difference. In addition, since the adsorption refrigerator is required to operate for a long period of time, higher durability is also required.

  The present invention has been made in view of the above-described problems of the background art, and has a simple structure, good valve body operation, and high durability, and a vapor valve for an adsorption refrigeration machine and an adsorption equipped with the same It aims at providing a type refrigerator.

The present invention is for an adsorption refrigeration machine that is provided in a vacuum container of an adsorption refrigeration machine, controls a communication state of spaces partitioned by the vacuum container, and selectively allows vapor refrigerant in the vacuum container to pass therethrough. In the steam valve, a hollow and long truncated pyramid-shaped casing with only the lower surface opened, and a large number of through-holes were formed on a pair of side surfaces that were inclined so as to be close to each other toward the top in the vertical direction . and the valve body, and a pair of the valve body of said pair of side flexible sheet provided said to cover the through hole of the valve body, two of each space adjacent to each other in the vacuum chamber A steam valve for an adsorption refrigeration machine installed between the two spaces , wherein the pair of valve bodies swings by the pressure difference between the two spaces to open and close the numerous through holes, and the communication state of the spaces is controlled It is.

The valve body is integrally formed of metal or resin, and the valve body provided on the side surface is made of rubber. Further, the valve main body includes a stopper piece extending so as to spread outside the valve body on the pair of side surfaces .

The present invention is also directed to an adsorption refrigerator that circulates a vapor refrigerant through an adsorption / desorption device provided in a vacuum vessel and alternately repeats adsorption and desorption of the vapor refrigerant and cools the adsorption / desorption device in the vacuum vessel. A steam valve for controlling the communication state of the desorber and the space provided above and below the desorber is provided, and the steam valve is a hollow and elongated truncated pyramid-shaped casing, and only the lower surface is opened, and as it goes upward in the vertical direction A valve body in which a plurality of through holes are formed on a pair of side surfaces, which are slopes inclined so as to be close to each other, and a flexible sheet-like valve body provided so as to cover the through holes on the pair of side surfaces. The valve main body is installed between the two adjacent spaces in the vacuum vessel, and hot water and cooling water are alternately flowed through the adsorption / desorption device, and two adjacent ones in the vacuum vessel are provided . Create pressure difference in each space By, by swinging the pair of valve body by the pressure difference to open and close the plurality of through holes, a suction type refrigerator for controlling the communication state of the two spaces.

  The vapor valve for an adsorption refrigeration machine according to the present invention has a simple structure, good responsiveness of the valve body, and high durability. Thereby, it is possible to construct an adsorption refrigeration machine that can sufficiently withstand long-term operation of the adsorption refrigeration machine and has good maintainability.

  Furthermore, the adsorption refrigerator of the present invention includes a steam valve with a simple structure, is durable, and is easy to maintain.

It is a schematic longitudinal cross-sectional view of the adsorption type refrigerator which attached the vapor | steam valve for adsorption type refrigerators of one Embodiment of this invention. It is a circuit diagram which shows operation | movement of the adsorption type refrigerator of one Embodiment of this invention. It is a circuit diagram which shows other operation | movement of the adsorption | suction type refrigerator of one Embodiment of this invention. It is a front view of the vapor | steam valve for adsorption type refrigerators of one Embodiment of this invention. 1 is a partially cutaway perspective view of a vapor valve for an adsorption refrigerator according to an embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 5 show an adsorption refrigerator 10 according to an embodiment of the present invention. The adsorption refrigerator 10 includes a refrigerator main body 20 connected to each pipe, a cooling device 70 and a cooling water tank 71 that are cold heat sources, and a hot and cold supply device 80 and a hot water tank 81 that are hot heat sources.

  The refrigerator main body 20 is configured by a vacuum container 22 that can be depressurized to a state close to a vacuum, and the vacuum container 22 is connected to a vacuum pump (not shown). The atmospheric pressure in the vacuum vessel 22 when the adsorption refrigerator 10 is in use is an atmospheric pressure at which water, which is the refrigerant of this embodiment, easily evaporates, and the pressure is reduced to a state close to vacuum. For example, the inside of the vacuum vessel 22 is, for example, about 10 to 50 hPa, preferably about 10 hPa.

  Inside the vacuum vessel 22, adsorption and desorption devices 23 and 24 are provided that alternately adsorb and desorb the vapor refrigerant and are formed in spaces separated from each other. Further, in the vacuum vessel 22, upper and lower spaces 25 and 26 adjacent to the adsorption / desorption devices 23 and 24, and communication openings 23 a and 23 b between the adsorption / desorption devices 23 and 24 and the upper and lower spaces 25 and 26, Steam valves 31, 32, 33, and 34 are provided at 24 a and 24 b so as to be openable and closable.

  Above the adsorption / desorption devices 23, 24, a pair of vapor valves 31, 32 are provided that allow vapor refrigerant to pass in one direction toward the upper space 25 in the vacuum vessel 22. A condenser 40 described later is provided in the upper space 25. Below the adsorption / desorption devices 23, 24, a pair of vapor valves 33, 34 that allow vapor refrigerant to pass in one direction from the lower space 26 side in the vacuum vessel 22 into the adsorption / desorption devices 23, 24 are provided. Yes. An evaporator 42 described later is provided in the lower space 26. The adsorption / desorption devices 23 and 24 and the upper space 25 and the lower space 26 communicate with each other only through the steam valves 31, 32, 33, and 34, respectively, and are formed independently in the vacuum vessel 22.

  Heat transfer tubes 27 and 28 for heat exchange are separately inserted into the adsorption / desorption devices 23 and 24 in the vacuum vessel 22 so as to be able to exchange heat between the inside and outside. A solid adsorbent 29 such as silica gel or zeolite, which is a material capable of adsorbing and releasing water vapor as a refrigerant, is attached to each surface of the heat transfer tubes 27 and 28. The heat transfer tubes 27 and 28 allow the solid adsorbent 29 to adsorb or release water vapor as a vapor refrigerant in the adsorption / desorption devices 23 and 24, respectively.

  The condenser 40 provided in the upper space 25 is provided with a condensing pipe 44 that is a pipe for exchanging heat with the vapor refrigerant to condense water vapor into liquid water. The condensing pipe 44 is bent in the upper space 25 so as to enable effective heat exchange. Below the condensing pipe 44 in the upper space 25, a tray member 46 that receives liquid water is disposed, and a return pipe 50 that communicates with the evaporator 42 is connected to the tray member 46.

  The evaporator 42 provided in the lower space 26 is provided with an evaporation pipe 48 which is a pipe for exchanging heat with water, which is a refrigerant that has become a liquid in the condenser 40, and evaporating the water. . The evaporation pipe 48 is bent in the lower space 26 so that effective heat exchange is possible. Above the evaporation pipe 48 in the lower space 26, it is connected to a return pipe 50 that returns the water, which is the refrigerant returned to the liquid by the condenser 40, to the lower space, and the refrigerant water is spread on the surface of the evaporation pipe 48. A spray tube 52 is provided.

  The steam valves 31, 32, 33, and 34 are each formed in the same structure, as shown in FIGS. 4 and 5, from a valve member 60 that is a hollow housing made of metal or resin and only the lower surface is opened. It consists of. The valve member 60 is configured by a truncated pyramid-shaped valve main body 62 and a flexible sheet-like valve body 66. The valve body 62 has a plurality of through holes 64 formed in a pair of side surfaces 62a along the long side in the longitudinal direction. The hole diameter of the through hole 64 can be set according to the application, and is set to, for example, 2 mm to 10 mm in diameter. The side surfaces 62a are slightly inclined so as to be close to each other as they go upward. The inclination angle of the side surface 62a is set to an acute angle of 5 to 40 degrees, preferably 10 to 25 degrees, more preferably about 10 to 20 degrees with respect to the vertical direction. Further, a flange portion 62b for attachment is formed on the lower end edge of the valve body 62 over the entire circumference, and the peripheral edge portions of the communication opening portions 23a, 23b, 24a, 24b of the adsorption / desorption devices 23, 24 are airtight. It is provided so that it can be attached.

The pair of valve bodies 66 provided on the outer surfaces of the pair of side surfaces 62a of the valve body 62 is made of a flexible silicone rubber or silicone resin sheet, or other synthetic resin or synthetic rubber sheet, and is formed on the upper surface 62c of the valve body 62. It is fixed by a fixing member 65. The valve body 66 is formed in one flexible sheet shape, and is arranged so as to hang down from its upper surface 62c to the side surfaces 62a on both sides by its own weight. As shown in FIG. 1, a stopper piece 68 extending from the fixing member 65 attached to the upper surface 62c so as to spread toward the both side surfaces 62a is provided on the outer surface side of the valve body 66 covered with the valve body 62. It should be formed in an umbrella shape.

  Next, the overall structure of the adsorption refrigerator 20 of this embodiment will be described with reference to FIGS. A pipe 45 to which the circulating cooling water returns is connected to one end of the condensing pipe 44 in the upper space 25, and a cooling device 70 such as a water-cooled chiller or an air-cooled chiller and a cooling water tank 71 are connected to the middle of the pipe 45. Are connected in order. The tip of the pipe 45 is connected to one end of the input side of the switching valve 72 that is a four-way valve. The other end of the condensing pipe 44 is also connected to the tip of a pipe 47 through which cooling water circulates via the pipe 45, and the base end of the pipe 47 is one end on the output side of the switching valve 74 that is a four-way valve. It is connected to the. The temperature of cooling water should just be about 30 degreeC, for example, and is 25-35 degreeC water.

  One end of the heat transfer tube 27 of the adsorption / desorption device 23 is connected to one end on the output side of the switching valve 72 via a pipe 73, and the other end of the heat transfer tube 27 is connected to one end on the input side of the switching valve 74 via a pipe 75. Connected. Similarly, one end of the heat transfer tube 28 of the adsorption / desorption device 24 is connected to the other end on the output side of the switching valve 72 via a pipe 77, and the other end of the heat transfer tube 28 is the other end on the input side of the switching valve 74. Is connected through a pipe 79.

  In the pipes 73, 75, 77, and 79, the cooling water from the cooling water tank 71 and the hot water from the hot water tank 81 are alternately circulated by switching the switching valves 72 and 74. The temperature of warm water should just be about 80 degreeC, for example, and should just be the water heated at 70-90 degreeC.

  A pipe 82 through which hot water circulates is connected between the other end on the input side of the switching valve 72 and the other end on the output side of the switching valve 74, and a hot heat supply device 80 that supplies hot water in the middle of the pipe 82; A hot water tank 81 is provided for storing hot water to be circulated. The heat supply device 80 only needs to be able to supply heat energy by exchanging heat with circulating hot water. As an energy supply source, exhaust heat from a solar heat utilization system, various boilers, and other various factories is used. The device used may be used. In particular, energy efficiency can be improved by configuring a heat source using exhaust heat.

  Pipes 85 for supplying cold water to a cooling device, a refrigerator, and other devices to be cooled 84 are connected to both ends of the evaporation pipe 48 of the evaporator 42. A cooled device 84 and a cold water tank 86 for storing cold water are provided in the middle of the pipe 85. The cold water flowing in the evaporation pipe 48 is cooled to 9 to 14 ° C., and is cooled to about 11 ° C., for example.

  Next, the operation of the adsorption refrigerator 20 of the present invention will be described. First, in the upper space 25, the cooling water from the cooling water tank 71 is supplied to the condenser 40 via the pipe 45, and the water vapor, which is the refrigerant in the vacuum vessel 22, is absorbed on the surface of the condensing pipe 44 to condense. And become liquid water. The water that has become liquid falls and is collected from the surface of the condensing tube 44 to the lower tray member 46, and the coolant water returns from the tray member 46 through the return tube 50 to the spraying tube 52 in the lower space 26. It is.

  In the lower space 26, liquid water is sprayed from the spray pipe 52, and the vacuum container 22 is in a state close to a vacuum, so that the sprayed water easily takes away latent heat and vaporizes. The latent heat at this time exchanges heat with the refrigerant water flowing in the evaporation pipe 48 through the evaporation pipe 48, the water in the evaporation pipe 48 is cooled, and is cooled by a cooling device, a refrigerator, or the like via the pipe 85. Cold water as a refrigerant is supplied to the device 84.

  The water evaporated in the lower space 26 is adsorbed by the solid adsorbent 29 of the adsorption / desorption devices 23 and 24 in the vacuum vessel 22. This adsorption operation is alternately performed by the adsorption / desorption devices 23 and 24. When one of the adsorption / desorption devices 23 and 24 has a lower atmospheric pressure than the lower space 26, one of the vapor valves 33 and 34 is used. Is done.

  Here, the opening / closing operation of the steam valves 31, 32, 33, 34 is performed when the valve body 66 is opened outward by the pressure difference between the outside and the inside of the valve member 60 and the valve body 66 is separated from the through hole 64. The valve body 66 is attached to the through hole 64 and the inside and outside of the valve member 60 are blocked. Since the pressure difference between the adsorption / desorption devices 23 and 24 and the upper and lower spaces 25 and 26 in the vacuum vessel 22 is very small, the valve body 66 needs to operate with as little pressure as possible. Accordingly, the valve body 66 adheres to the inclined side surface 62a of the valve body 62 by its own weight, and maintains the closed state. On the other hand, when a pressure difference is generated between the inside and outside of the valve member 60, the inclination angle of the side surface 62a is small with respect to the vertical direction, so that the valve body 66 can be swung with a relatively small force, and easily with a small pressure difference. It can be opened.

  The state shown in FIG. 2 shows a case where the pressure on the adsorption / desorption device 24 side is low. At this time, the cooling water is supplied from the cooling water tank 71 to the heat transfer pipe 28 of the adsorption / desorption device 24 via the pipes 45 and 77 and the switching valve 72, and the cooling water is supplied from the pipe 79, the switching valve 74, and the pipe 47. Then, it returns to the cooling device 70 via the condenser tube 44 and the pipe 45, and the cooling water circulates through this path to cool the condenser tube 44 and the heat transfer tube 28. At the same time, hot water from the hot water tank 81 circulates in the heat transfer tube 27. In this state, cooling water is supplied to the adsorption / desorption device 24 via the heat transfer tube 28, the solid adsorbent 29 disposed on the surface of the heat transfer tube 28 is cooled, and water vapor, which is a refrigerant, is added to the solid adsorbent 29. It is adsorbed by an adsorption reaction. Thereby, the pressure in the adsorption / desorption device 24 becomes lower than the lower space 26 in which the upper space 25 and water are vaporized. Due to this pressure difference, the valve body 66 of the steam valve 32 adheres to the side surface 62a by its own weight and closes the through hole 64, and the valve body 66 of the steam valve 34 swings away from the through hole 64 due to the pressure difference. The inside and outside communicate through 64. In this state, water vapor evaporated by the evaporator 42 in the lower space 26 flows into the adsorption / desorption device 24 and is adsorbed by the solid adsorbent 29 of the heat transfer tube 28.

  On the other hand, the hot water of the hot water tank 81 is supplied to the heat pipe 27 of the adsorption / desorption device 23 via the pipe 82 and the switching valve 72, and the hot water is further sent to the hot heat supply device 80 via the pipe 75 and the switching valve 74, The heat energy is replenished, and it returns to the hot water tank 81 to circulate. In FIG. 2, pipes 45, 47, 77, and 79 through which cold water flows are indicated by solid lines, and pipes 73, 75, and 82 through which hot water flow are indicated by broken lines. In a state where hot water is supplied to the heat transfer tube 27, heat energy is supplied to the heat transfer tube 27, and moisture, which is a refrigerant adsorbed by the solid adsorbent 29 provided on the surface of the heat transfer tube 27, evaporates. Thereby, the atmospheric pressure in the adsorption / desorption device 23 rises, the steam valve 33 is closed, the steam valve 31 is opened, and water vapor flows into the upper space 25. The water vapor flowing into the upper space 25 is cooled and condensed by the condenser 40, returns to the liquid as described above, and circulates by dropping on the tray member 46.

  This operation is performed until a certain amount of moisture is adsorbed on the solid adsorbent 29 of the adsorption / desorption device 24 and the moisture of the solid adsorbent 29 of the adsorption / desorption device 23 is almost evaporated, and then the switching valves 72 and 74 are switched. The switching interval is from several minutes to several tens of minutes, for example, every 8 minutes.

  When the switching valves 72 and 74 are switched, switching is performed so that cold water flows through the pipes 73 and 75 and hot water flows through the pipes 77 and 79, as shown in FIG. In this state, cooling water is supplied to the adsorption / desorption device 23 via the pipe 73 and the heat transfer tube 27, the solid adsorbent 29 disposed on the surface of the heat transfer tube 27 is cooled, and a refrigerant is supplied to the solid adsorbent 29. Is adsorbed by an adsorption reaction. Thereby, the pressure in the adsorption / desorption device 23 becomes lower than the lower space 26 in which the upper space 25 and water are vaporized. Due to the pressure difference, the valve body 66 of the steam valve 31 adheres to the side surface 62a by its own weight and closes the through hole 64, and the valve body 66 of the steam valve 33 swings away from the through hole 64 due to the pressure difference. The inside and outside communicate with each other through the hole 64. In this state, water vapor evaporated by the evaporator 42 in the lower space 26 flows into the adsorption / desorption device 23 and is adsorbed by the solid adsorbent 29 of the heat transfer tube 27.

  On the other hand, the hot water in the hot water tank 81 is supplied to the heat transfer pipe 28 of the adsorption / desorption device 24 via a pipe 82, a switching valve 72, and a pipe 77, and the hot water further passes through a pipe 79 and a switching valve 74. The heat energy is replenished and returned to the hot water tank 81 for circulation. In a state where hot water is supplied to the heat transfer tube 28, heat energy is supplied to the heat transfer tube 28, and moisture adsorbed on the solid adsorbent 29 provided on the surface of the heat transfer tube 28 evaporates. As a result, the atmospheric pressure in the adsorption / desorption device 24 increases, the steam valve 34 is closed, the steam valve 32 is opened, and water vapor flows into the upper space 25. The water vapor flowing into the upper space 25 is cooled and condensed by the condenser 40 as described above, returns to the liquid, falls on the tray member 46, is sent to the evaporator 42, and circulates as described above.

  This operation is also performed by dividing the predetermined time as described above, and the switching valves 72 and 74 are switched when the predetermined time elapses. The above switching operation of the switching valves 72 and 74 is repeated to continuously supply cold water to the apparatus to be cooled 84.

  The valve member 60 of the vapor valves 31, 32, 33, 34 for the adsorption refrigeration machine of this embodiment can obtain a reliable operation with a simple structure. In particular, the valve body 66 is a flexible sheet-like material, has good responsiveness, and securely adheres to the side surface 62 a of the valve body 62. Moreover, due to the pressure difference in the vacuum vessel 22, the sheet-like valve body 66 can easily swing and allow the vapor refrigerant to pass therethrough. Further, since the operation is only to swing the flexible sheet-like valve body 66, the durability of the parts and the apparatus can be increased.

  Further, the adsorption refrigerator 10 of the present invention includes the refrigerator main body 20 provided with the steam valves 31, 32, 33, and 34 having a simple structure, so that the structure of the apparatus is light and simple, and the operation is reliable. The durability can also be increased.

  The vapor valve for the adsorption refrigeration machine and the adsorption refrigeration machine of the present invention are not limited to the above embodiment, and the shape of the valve body and the valve body of the vapor valve can be set as appropriate. The inclination angle of the side surface of the valve main body may be set to a predetermined acute angle within a range in which the valve body can be easily operated.

DESCRIPTION OF SYMBOLS 10 Adsorption-type refrigerator 20 Refrigerator main body 22 Vacuum vessel 23, 24 Adsorber / desorber 25 Upper space 26 Lower space 27, 28 Heat transfer tube 29 Solid adsorbent 31, 32, 33, 34 Steam valve 40 Condenser 42 Evaporator 44 Condensation Pipe 45, 47, 73, 75, 77, 79, 82, 85 Pipe 46 Tray member 48 Evaporating pipe 50 Return pipe 52 Spreading pipe 60 Valve member 62 Valve body 62a Side face 64 Through hole 66 Valve body 70 Cooling device 71 Cooling water tank 80 Heat supply device 81 Hot water tank 84 Cooled device

Claims (4)

In a vapor valve for an adsorption refrigeration machine that is provided in a vacuum container of an adsorption refrigeration machine, controls a communication state of spaces partitioned from each other in the vacuum container, and selectively allows vapor refrigerant in the vacuum container to pass through,
A hollow and elongated truncated pyramid-shaped casing having only a lower surface opened, and a valve body having a plurality of through holes formed on a pair of side surfaces that are inclined so as to approach each other as it goes upward in the vertical direction ; and a pair of the valve body of said pair of side flexible sheet provided said to cover the hole of
The valve body is installed between the two adjacent spaces in the vacuum vessel, and the pair of valve bodies are swung by a pressure difference between the two spaces to open and close the plurality of through holes. A vapor valve for an adsorption refrigeration machine , wherein the communication state of the space is controlled.   The vapor valve for an adsorption refrigeration machine according to claim 1, wherein the valve body is integrally formed of metal or resin, and the valve body provided on the side surface is made of rubber. The said valve main body is a vapor | steam valve for adsorption | suction type refrigerators of Claim 1 provided with the stopper piece extended so that it might spread outside the said valve body of a pair of said side surface . In an adsorption refrigerator that circulates a vapor refrigerant in an adsorption / desorption device provided in a vacuum vessel and cools by alternately repeating adsorption and desorption of the vapor refrigerant,
A vapor valve for controlling the state of communication between the adsorption / desorption device in the vacuum vessel and the space provided above and below it;
The steam valve is a hollow , long and narrow truncated pyramid-shaped casing, and only the lower surface is opened, and a plurality of through holes are formed on a pair of side surfaces that are inclined so as to approach each other in the vertical direction. and a valve body, wherein a pair of side surfaces form a flexible sheet provided said to cover the hole of the valve body, said valve body, two of said respective space adjacent to each other in the vacuum chamber Installed between
Flow alternately hot water and cooling water to the adsorption and desorption apparatus, wherein two of said adjacent to each other in the vacuum vessel to cause a pressure differential to each space, said by swinging the pair of valve body by the pressure difference An adsorption refrigeration machine that opens and closes a large number of through holes to control the communication state of the two spaces.

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