JP2009036429A - Integrated adsorber - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an integrated adsorber capable of making compatible further miniaturization and achievement of high efficiency in cold heat generation, in a system using an adsorption type refrigerating cycle. <P>SOLUTION: The inside of a housing 21 maintained in a vacuum state by a vacuum pump 20, is partitioned into a reaction space 210 and a thermal insulation space 211 by a partition wall 24. An adsorption/desorption heat exchanger 22 is arranged on the upper side of the reaction space, and a condensation/evaporation heat exchanger 23 is arranged on the lower side. A fin part 231 of the condensation/evaporation heat exchanger is stored in a basin vessel part 240 formed of the partition wall 24, and a space with a housing inside surface is thermally insulated by separating by the thermal insulation space. Steam adsorbed to an adsorbent S is desorbed, and condensed-liquefied water W is gathered in a basin vessel. The thermal insulation space is also vacuum-exhausted by a vacuum gate valve, and thermal insulation of the condensation/evaporation heat exchanger is attained when functioning as a condenser. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  INDUSTRIAL APPLICABILITY The present invention is used in an adsorption heat pump or adsorption refrigerator using an adsorption refrigeration cycle, and an adsorption / desorption heat exchanger that performs adsorption / desorption of adsorbate, and condensation / evaporation that condenses / evaporates the adsorbate. The present invention relates to an integrated adsorber in which a heat exchanger for operation is disposed in one housing.

  Conventionally, as an adsorption refrigerator using an adsorption refrigeration cycle, a pair of adsorption heat exchangers, a condenser disposed at an upper position of the pair of adsorption heat exchangers, and an evaporator disposed at a lower position Are provided in a state of being separated from each other (see, for example, Patent Document 1). In this, a pair of heat exchangers for adsorption are individually partitioned, and the partition where the condenser is disposed is partitioned so as to be individually openable and closable by a steam valve, and the above-described individual partitions are partitioned. The pair of adsorption heat exchangers and the compartments where the evaporators are arranged are also partitioned and communicated with each other so as to be opened and closed individually by a steam valve.

  Also, as an adsorber used in an adsorption refrigeration machine using an adsorption refrigeration cycle, an adsorption / desorption heat exchange member filled with an adsorbent and a refrigerant inside are condensed and evaporated. A device provided with a heat exchange member is also known (see, for example, Patent Document 2 or Patent Document 3).

Japanese Patent No. 3490543 JP-A-2005-300129 JP 2006-200870 A

  By the way, in order to continuously extract cold heat using low-temperature exhaust heat as a heat source using an adsorption refrigeration cycle, at least two core parts having the same configuration are provided as adsorption / desorption, and adsorption / desorption is performed. Since it is necessary to repeat these steps alternately, the overall system is increased in size. Therefore, in order to reduce the size of the entire system, it is possible to use an integrated adsorber in which an adsorption / desorption heat exchanger and a condensation / evaporation heat exchanger are arranged in the same housing. It is considered. That is, instead of separately providing a condenser and an evaporator, condensation and evaporation are performed alternately by changing the heat medium supplied to the inside using a single heat exchanger. As shown, one heat exchanger 102 for adsorption / desorption and one heat exchanger 103 for condensation / evaporation are disposed in one housing 101, and the housing 101 is in a substantially vacuum state. The adsorbate (for example, water) W is enclosed.

  When such an integrated adsorber is used, a low-temperature heat medium is provided so that the gas phase adsorbate (for example, water vapor) desorbed from the adsorption / desorption heat exchanger 102 at the upper position functions as a condenser. When the supplied heat exchanger 103 for condensing / evaporating is touched, it is condensed and liquefied and accumulated as water W at the bottom of the housing 101. However, since the position near the inner surface of the bottom of the housing 101 is in direct contact with the outside through the wall of the housing 101 during the condensation / liquefaction, the presence of the inner surface of the bottom of the housing 101 itself is the heat for condensation / evaporation. It acts on the side which inhibits the reaction of condensation / liquefaction of adsorbate by the exchanger 103.

  Therefore, when configuring an integrated adsorber, especially when improving the heat insulation performance of the heat exchanger for condensation / evaporation, reducing the capacity of the adsorbate itself, and switching between condensation and evaporation of the heat exchanger for condensation / evaporation. It is necessary to achieve both further miniaturization and higher efficiency of cold heat generation by eliminating the influence of sensible heat of adsorbate and improving the efficiency of cold heat generation by latent heat of evaporation.

  The present invention has been made in view of such circumstances, and an object of the present invention is to achieve further downsizing and higher cooling generation in an integrated adsorber used in a system using an adsorption refrigeration cycle. An object of the present invention is to provide an integrated adsorber capable of achieving both efficiency.

  To achieve the above object, according to the first aspect of the present invention, an adsorbent having an adsorbent capable of switching between adsorbate adsorption and desorption in a housing as a vacuum container in which adsorbate is enclosed is provided. An integrated adsorber comprising a heat exchanger for desorption / desorption and a heat exchanger for condensation / evaporation that is switched between condensing the desorbed adsorbate and evaporating the adsorbate for adsorption. The following specific items were prepared for the target. A partition wall that covers the lower side of the condensation / evaporation heat exchanger and partitions the housing between the condensation / evaporation heat exchanger and an inner surface of the bottom of the housing; A heat insulating space defined by the partition wall is formed between the partition wall and the inner surface of the bottom of the housing (claim 1).

  In the case of the present invention, when the integrated adsorber enters the desorption-condensation process, the adsorbate adsorbed by the adsorbent of the adsorption / desorption heat exchanger is desorbed and released into the housing above the partition wall. On the other hand, the desorbed adsorbate is condensed and liquefied by a heat exchanger for condensation / evaporation set to function as a condenser, and the condensed and liquefied liquid phase adsorbate accumulates on the partition wall. Become. During this condensation and liquefaction, the heat exchanger for condensation / evaporation functioning as a condenser is insulated from the inner surface of the bottom of the housing by a partition wall with a heat insulation space being completely separated. Therefore, the condensation / liquefaction action is not hindered or reduced by contact with the inner surface of the housing. As a result, the condensation performance of the heat exchanger for condensation / evaporation can be improved, and the efficiency of cold heat generation can be improved while reducing the size.

  In the present invention, the partition wall is provided with a deep dish container part opened upward, and the heat exchanger for condensation / evaporation is disposed so that the heat exchange part is accommodated in the deep dish container part. (Claim 2). In this way, the adsorbate of the liquid phase condensed and liquefied by entering the above desorption-condensation process is accumulated in the deep dish container, and when the next adsorption-evaporation process is switched to the deep dish container The adsorbate of the liquid phase accumulated in the part is evaporated by the heat exchange part of the heat exchanger for condensation / evaporation. In this way, since the condensation / evaporation of the adsorbate is performed by the heat exchanger for condensation / evaporation accommodated in the deep dish container, it is more efficient than the case where the liquid phase adsorbate is accumulated at the bottom of the housing. An adsorption refrigeration cycle can be realized.

  In the present invention, a communication hole that is formed in the partition wall and communicates with the reaction space above the partition wall and the heat insulation space, and a vacuum partition valve that closes the communication hole so as to be openable and closable. In this way, the vacuum partition valve is opened as the reaction space is evacuated, and the heat insulation space is also evacuated (Claim 3). In this way, if the reaction space is brought into a predetermined vacuum state, the heat insulation space can also be brought into a predetermined vacuum state, and one means (for example, a vacuum pump) for evacuating the reaction space is provided. It will be better if there is. Therefore, it is not necessary to separately install a vacuum pump, for example, for evacuation of the heat insulation space. In addition, since the heat insulating space can be in a vacuum state, the heat insulating performance can be improved and the effect of the first or second aspect can be further increased.

  Furthermore, in the present invention, a moisture absorbing material that covers at least the periphery of the heat exchanging portion of the heat exchanger for condensation / evaporation from the upper side to the lower side is provided, and the moisture absorbing material has at least a lower end at the adsorption / desorption. It can be set so as to be immersed in the adsorbate of the liquid phase which is desorbed from the adsorbent of the heat exchanger for use and condensed and liquefied by the heat exchanger for condensation / evaporation and accumulates on the partition wall. By doing so, it is easier to evaporate than the metal fins of fin-and-tube heat exchangers that are normally used as heat exchangers for condensation / evaporation, and the evaporation surface area is greatly increased. It is possible to greatly increase the heat of vaporization accompanying evaporation. As a result, it is possible to significantly improve the cold heat generation performance when the heat exchanger for condensation / evaporation functions as an evaporator to generate cold heat.

  In the second invention, an adsorption / desorption heat exchanger provided with an adsorbent capable of switching between adsorbate adsorption and desorption in a housing as a vacuum vessel in which the adsorbate is enclosed; For an integrated adsorber with a condensation / evaporation heat exchanger that can be switched between condensing desorbed adsorbate and evaporating adsorbate for adsorption, I decided to prepare. That is, the heat exchanger for condensation / evaporation is provided with a hygroscopic material that covers at least the periphery of the heat exchange section from the upper side to the lower side, and the hygroscopic material has at least the lower end at the adsorption / desorption heat exchanger. The adsorbent is set so as to be immersed in the liquid phase adsorbate which is desorbed from the adsorbent, condensed and liquefied by the heat exchanger for condensation / evaporation and accumulated at the bottom of the housing.

  In the case of the present invention, when the integrated adsorber is switched to the adsorption-evaporation process, the adsorbate is evaporated from the hygroscopic material that has absorbed the liquid phase adsorbate in the previous process and absorbed moisture, and is used for condensation / evaporation. Evaporation is easier than evaporation from metal fins of fin-and-tube heat exchangers normally used as heat exchangers, and the evaporation surface area is greatly increased to significantly increase the heat of vaporization caused by evaporation. Can be increased. As a result, it is possible to significantly improve the cold heat generation performance when the heat exchanger for condensation / evaporation functions as an evaporator to generate cold heat.

  In the second aspect of the invention, the heat exchanger for condensation / evaporation can be positioned so that its heat exchanging portion is separated above the adsorbate of the liquid phase accumulated at the bottom of the housing. Item 6). In this way, when the heat exchange part of the heat exchanger for condensation / evaporation is immersed in the liquid phase adsorbate, it is affected by the sensible heat of the adsorbate. The position is set to be separated from the adsorbate of the liquid phase that accumulates at the bottom of the housing, so the effects of sensible heat on the adsorbate are eliminated and suppressed when switching between evaporation and condensation. It becomes possible to do. For this reason, when switching between evaporation and condensation, it is only necessary to change the temperature of the adsorbate absorbed by the hygroscopic material, which eliminates the need to consider the effects of sensible heat on the adsorbate, thus increasing efficiency. Can be achieved.

  As described above, according to the integrated adsorber according to any one of claims 1 to 4, the adsorption that has been adsorbed by the adsorbent of the adsorption / desorption heat exchanger after entering the desorption-condensation step. When the quality is desorbed and the desorbed adsorbate is condensed and liquefied by the condensation / evaporation heat exchanger set to function as a condenser, the condensation / evaporation heat exchanger functioning as a condenser is partitioned. The wall can be completely insulated from the inner surface of the bottom portion of the housing with the heat insulation space interposed therebetween to be insulated. For this reason, the condensation / liquefaction action is not hindered or reduced due to contact with the inner surface of the housing, thereby improving the condensation performance by the heat exchanger for condensation / evaporation, while reducing the size. Moreover, it becomes possible to improve the efficiency of cold heat generation.

  In particular, according to the second aspect, since the condensation / evaporation of the adsorbate is performed by the heat exchanger for condensation / evaporation accommodated in the deep dish container portion, the case where the adsorbate of the liquid phase is accumulated at the bottom of the housing is obtained. However, the adsorption refrigeration cycle can be realized efficiently.

  According to the third aspect, if the reaction space is set to a predetermined vacuum state, the heat insulation space can be set to a predetermined vacuum state. For this reason, only a means for evacuation of the reaction space is required, and it is possible to eliminate the need to separately install a vacuum pump for evacuation of the heat insulation space.

  According to claim 4, it is easier to evaporate than the case of evaporating from a metal fin of a fin-and-tube heat exchanger usually employed as a heat exchanger for condensation / evaporation, and the evaporation surface area is greatly increased. It is possible to greatly increase the heat of vaporization accompanying evaporation. As a result, it is possible to greatly improve the cold heat generation performance when the heat exchanger for condensation / evaporation functions as an evaporator to generate cold heat.

  Further, according to the integrated adsorber of claim 5 or 6, when switching to the adsorption-evaporation process, the adsorbate is evaporated from the hygroscopic material sucked in by absorbing the liquid phase adsorbate in the previous process. Therefore, it is easier to evaporate than metal fins of fin-and-tube heat exchangers usually used as heat exchangers for condensation / evaporation, and the evaporation surface area is greatly increased for evaporation. As a result, the heat of vaporization can be greatly increased. As a result, it is possible to greatly improve the cold heat generation performance when the heat exchanger for condensation / evaporation functions as an evaporator to generate cold heat.

  In particular, according to the sixth aspect of the present invention, since the heat exchanging portion is positioned so as to be separated from the adsorbate of the liquid phase accumulated in the bottom of the housing, the liquid phase of the liquid phase is switched at the time of alternately switching between evaporation and condensation. The influence of sensible heat of the adsorbate can be eliminated / suppressed. As a result, when switching between evaporation and condensation, it is only necessary to change the temperature of the adsorbate absorbed by the hygroscopic material, and it is no longer necessary to consider the effect of sensible heat on the adsorbate. Can be planned.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a principle diagram showing an example of an adsorption heat pump to which an integrated adsorber according to an embodiment of the invention is applied. In the figure, reference numerals 2 and 2 are respectively integrated adsorbers, 3 is a high-temperature heat medium part that holds the heat medium at a predetermined high temperature using waste heat such as waste hot water, and 4 is a predetermined heat medium. A heat radiating part (for example, an outdoor unit) that maintains and maintains the low temperature state of 5 is a cooling unit that incorporates a cold heat extraction heat exchanger for recovering and extracting cold heat from the lowest temperature heat medium returned to this by heat exchange , 6, 7, 8, and 9 are first to fourth switching units each including four on-off valves V1 to V4, and 11, 12, 13, and 14 are switching units 6, 7, 8, and 14, respectively. 9 is an on-off valve interposed in a path bypassing 9. First, the principle of cold extraction by this adsorption heat pump will be briefly described based on the adsorption refrigeration cycle.

  The pair of integrated adsorbers 2 and 2 have the same configuration, and are configured such that both an adsorption / desorption heat exchanger 22 and a condensation / evaporation heat exchanger 23 are disposed in a housing 21. It has been done. The inside of the housing 21 is maintained in a substantially vacuum state, and a required amount of adsorbate such as water, alcohol, ammonia or the like is sealed inside. The adsorption / desorption heat exchanger 22 is fixed with an adsorbent such as zeolite, silica gel, activated carbon or the like on its outer surface as will be described later. In the following description, it is assumed that water is enclosed as an adsorbate and zeolite that adsorbs the water (water vapor) is fixed as the adsorbent.

  On the other hand (for example, the left side of FIG. 1), the desorption-condensation process is performed as follows. That is, in the adsorption / desorption heat exchanger 22 in one adsorber 2, when a high temperature heat medium is supplied from the high temperature heat medium part 3 through the first switching part 6 by the operation of the pump 31, The adsorbent is heated by the medium, and the desorption (desorption / regeneration) step is performed, thereby releasing the water vapor (vapor phase adsorbate) adsorbed by the adsorbent until it is desorbed. . At that time, in the condensation / evaporation heat exchanger 23 in the one adsorber 2, a part of the low-temperature heat medium is supplied from the heat radiating unit 4 to the inside through the fourth switching unit 9 by the operation of the pump 41. It will function as a condenser. For this reason, the desorbed water vapor is condensed and liquefied mainly by coming into contact with the outer surface of the heat exchanger 23 for condensation / evaporation, and is stored as water (liquid phase adsorbate) at the bottom of the housing 21. Become.

  At the same time, in the other adsorber 2 (right side in FIG. 1), the adsorption-evaporation process is performed as follows. That is, in the adsorption / desorption heat exchanger 22 in the other adsorber 2, the remainder of the low-temperature heat medium is supplied from the heat radiating unit 4 to the inside through the second switching unit 7 by the operation of the pump 41, and the adsorbent is supplied. When cooled, the adsorbent of the adsorption / desorption heat exchanger 22 performs an adsorption process for adsorbing water vapor in the housing 21. In the condensation / evaporation heat exchanger 23 in the other adsorber 2, the heat medium heated by heat exchange with the cold heat extraction heat exchanger of the cooling unit 5 is operated by the pump 51 and the fourth switching unit. 9 is supplied to the inside, thereby functioning as an evaporator. As a result, the water accumulated at the bottom of the housing 21 evaporates due to condensation and liquefaction in the previous process, and the heat medium in the condensation / evaporation heat exchanger 23 is cooled by the evaporation heat of evaporation to lower the temperature. The lowered heat medium is returned to the cooling unit 5 via the third switching unit 8. Then, cold heat is extracted from the heat medium returned to the cooling unit 5 by heat exchange in the cold heat extraction heat exchanger in the cooling unit 5.

  The desorption-condensation process in one adsorber 2 and the adsorption-evaporation process in the other adsorber 2 are alternately switched between the pair of adsorbers 2 and 2 by batch processing. By being repeatedly performed, the cooling heat extraction in the cooling unit 5 is continuously performed. Hereinafter, the adsorbers 2a to 2d of various embodiments used as the respective adsorbers 2 will be described in detail.

<First Embodiment>
FIG. 2 shows an integrated adsorption 2a according to the first embodiment of the present invention, in which a reference numeral 20 denotes a vacuum pump, 21 denotes a housing, 22 denotes an adsorption / desorption heat exchanger, and 23 denotes an inside of the housing 21. A heat exchanger 24 for condensation / evaporation disposed at the lower position, 24 is a partition wall for partitioning in such a way that there is a space on the side and lower side of the heat exchanger 23 for condensation / evaporation, and W is water as an adsorbate. It is. Both the adsorption / desorption heat exchanger 22 and the condensation / evaporation heat exchanger 23 are constituted by fin-and-tube heat exchangers.

  The housing 21 is formed of, for example, stainless steel so that the inside becomes a sealed space, and a predetermined amount of water W is sealed in a state where the inside is maintained in a substantially vacuum state by the operation of the vacuum pump 20. The interior of the housing 21 is partitioned by the partition wall 24 into a reaction space 210 and a heat insulating space 211. The reaction space 210 occupies most of the space from the upper part to the lower part in the housing 21, the adsorption / desorption heat exchanger 22 is disposed at the upper position of the reaction space 210, and the heat for condensation / evaporation is disposed at the lower position. An exchanger 23 is provided.

  As shown in detail in FIG. 3, the adsorption / desorption heat exchanger 22 has an adsorbent S fixed to the outer surface of the fin 221 or the tube 222 with a predetermined thickness (for example, adhesively fixed). When the adsorbent S is cooled by passing a low-temperature heat medium, the water vapor in the reaction space 210 is adsorbed and held, while when the high-temperature heat medium is passed through the tube and the adsorbent S is heated, the adsorption is performed. The water vapor is desorbed and released into the reaction space 210.

  The partition wall 24 is in the shape of a deep dish so as to surround the lower side of the fin portion 231 and the front, rear, left and right sides which are heat exchange portions that substantially perform heat exchange by the condensation / evaporation heat exchanger 23. In addition, the housing 21 is configured to partition the inside of the housing 21. That is, the partition wall 24 includes a deep dish container portion 240 opened upward by a bottom wall 241 and side walls 242, 242,... Rising upward from the periphery thereof, and from each upper end of the side walls 242, 242,. A flange wall 243 that extends and is fixed to the side wall surface of the housing 21 is provided, and the inside of the housing 21 is partitioned into a reaction space 210 and a heat insulation space 211 by the flange wall 243. And while the tube part 232 of the heat exchanger 23 for condensation / evaporation penetrates the front and rear side walls 242 and 242, the fin part 231 is accommodated inside the deep dish container part 240, and the fin part 231 is accommodated. The condensed and liquefied water is accumulated in the deep dish container 240. And the heat insulation space 211 exists between the inner surface of the housing 21 by the side wall 242,242, ... on the side of the fin part 231 in the deep dish container part 240, and the bottom wall 241 on the bottom side, respectively. It is designed to be maintained in an insulated state.

  According to the integrated adsorber 2a of the first embodiment, when entering the desorption-condensation step, the adsorbent S is heated by the high-temperature heat medium supplied to the adsorption / desorption heat exchanger 22, so that the adsorbent S. The water vapor adsorbed on the water is desorbed and released into the reaction space 210, while a low temperature heat medium is supplied to the condensation / evaporation heat exchanger 23, and the condensation / evaporation heat exchanger 23 functions as a condenser. Therefore, the water vapor released into the reaction space 210 is condensed and liquefied, and the condensed and liquefied water droplets are accumulated in the deep dish container 240 (see water W in FIG. 2). During the condensation and liquefaction, the fin portion 231 of the heat exchanger for condensation / evaporation 23 functioning as the condenser is completely separated from the inner surface of the housing 21 by the partition wall 24 with the heat insulating space 211 interposed therebetween. Therefore, the condensation / liquefaction action is not hindered or reduced by contact with the inner surface of the housing 21, and the condensation performance of the fin portion 231 that is the heat exchange part is effectively and efficiently used. Will be able to.

  In addition, even if the fin portion 231 is immersed in water, the amount of water that is an adsorbate may be set to an amount corresponding to the inner volume of the deep dish container portion 240, and the depth of the partition wall 24 may be increased. The capacity can be significantly reduced as compared with the case where the inner volume of the inner bottom portion of the housing 21 when the dish container portion 240 is not present is set as a reference. As described above, while reducing the size of the integrated adsorber 2a, the condensing function as a condenser based on the supply of the same low-temperature heat medium can be performed more than when the partition wall 24 is not present. In addition, the amount of adsorbate required can be reduced. In other words, the condensation performance by the heat exchanger 23 for condensation / evaporation can be improved, and the same condensation performance can be obtained with a smaller heat capacity, and thereby further miniaturization can be achieved. It should be noted that the amount of water as the adsorbate can be set to such an extent that all of the water accumulated in the deep dish container 240 is not completely evaporated in the next evaporation step.

  At this time, the heat insulating space 211 may be merely a sealed space. For example, the second vacuum pump 20a is provided so as to communicate with the heat insulating space 211, and the heat insulating space 211 is brought into a substantially vacuum state so that the depth is reduced. The heat insulation performance with respect to the fin part 231 of the dish container part 240 can be further improved, and thereby the condensation performance can be further improved.

  Further, without providing the second vacuum pump 20a, a communication hole 244 is provided in the partition wall 24 as in the integrated adsorber 2b shown in FIG. 4, and a vacuum partition valve 25 is provided for the communication hole 244. You may do it. In this case, if the inside of the reaction space 210 is evacuated by operating the vacuum pump 20, the vacuum partition valve 25 is also opened and the inside of the heat insulating space 211 is evacuated accordingly, and the reaction space 210 and the heat insulating space 211 are also evacuated. Both can be in a predetermined vacuum state. Therefore, without providing the second vacuum pump 20a as described above, not only the reaction space 210 is brought into a predetermined vacuum state by one vacuum pump 20, but also the heat insulating space 211 is brought into a predetermined vacuum state. Can do. The structure of the integrated adsorber 2b in FIG. 4 other than the vacuum gate valve 25 is the same as that of the integrated adsorber 2a in FIG.

Second Embodiment
FIG. 5 shows an integrated adsorber 2c according to a second embodiment of the present invention. The integrated adsorber 2c according to the second embodiment is configured such that the periphery of the fin portion 231 which is a heat exchange part of the condensation / evaporation heat exchanger 23 is covered with a moisture absorbent 26, and the latent heat of vaporization (heat of vaporization). ) To improve the cooling efficiency and the cold heat generation efficiency. In addition, the same code | symbol as 1st Embodiment is attached | subjected to the same component as 1st Embodiment, and the detailed description which overlapped is abbreviate | omitted.

  The hygroscopic material 26 is made of a material having almost no heat capacity such as paper such as filter paper, cloth such as non-woven fabric, and the like, or a belt shape that can accommodate the fin portion 231 inside, or a belt shape having a predetermined width. It is formed. In the case of a bag shape, the bag-shaped hygroscopic material 26 is covered over the entire fin portion 231, and in the case of a belt-like shape, the band-shaped hygroscopic material 26 is wrapped around the fin portion 231, so that FIG. As shown, the hygroscopic material 26 is covered around the fin portion 231.

  In the case of the integrated adsorber 2c according to the second embodiment, the water vapor desorbed from the adsorbent S by the desorption-condensation process is condensed and liquefied and accumulated as water W at the bottom of the housing 21 for condensation / evaporation. The lower half of the fin portion 231 of the heat exchanger 23 is immersed in water. Thereby, the lower half of the hygroscopic material 26 is also immersed in water, and moisture is also absorbed by the upper half side. When entering the adsorption-evaporation process by switching the process, the adsorbent S is cooled by the low-temperature heat medium supplied to the adsorption / desorption heat exchanger 22, so that the water vapor in the housing 21 is adsorbed by the adsorbent S. It will be. In addition, the condensation / evaporation heat exchanger 23 is supplied with a heat medium whose temperature has been raised by heat exchange with the heat extraction heat exchanger in the cooling unit 5, whereby the condensation / evaporation heat exchanger 23 is It will function as an evaporator. At this time, since the hygroscopic material 26 sucks water as a liquid phase adsorbate and has sufficiently absorbed moisture, the water vapor evaporates from the hygroscopic material 26 itself rather than from the surface of the metal fin of the fin portion 231. Will do. That is, it is easier to evaporate than the fin portion 231 without the moisture absorbent 26 from the surface of the metal fin, and the evaporation surface area is greatly increased by the moisture absorbent 26 to greatly increase the evaporation efficiency. Will be able to. For this reason, the heat of vaporization can be greatly increased as compared with the case of evaporation only from the fin portion 231 of the heat exchanger for condensation / evaporation 23, and condensing due to the loss of heat of vaporization (latent heat of vaporization). / The heat medium in the evaporating heat exchanger 23 can be cooled much more efficiently, and the efficiency of cold heat generation can be improved. Accordingly, it is possible to further reduce the size when exhibiting the same performance with respect to the cold heat generation, or to further improve the performance with respect to the cold heat generation.

  In the above second embodiment, the case where the moisture absorbent material 26 made of cloth or the like is wound around the fin portion 231 of the heat exchanger 23 for condensation / evaporation has been described. In particular, the outer surface of each fin of the fin portion 231 of the heat exchanger 23 is prepared in a gel by mixing, for example, a binder or the like with a moisture absorbent prepared in a liquid state or a powder / particulate moisture absorbent. It may be applied, dried and fixed. The hygroscopic material absorbs moisture from the water W condensed and liquefied by the desorption-condensation process and collected at the bottom of the housing 21, and is evaporated in the adsorption-evaporation process as described above.

<Third Embodiment>
FIG. 7 shows an integrated adsorber 2d according to a third embodiment of the present invention. The integrated adsorber 2d of the third embodiment expands the size of the housing 21 downward in comparison with the first or second embodiment in relation to the capacity of the adsorbate, and condenses / evaporates the heat exchanger 23. The hygroscopic material 27 is installed in a state of hanging downward so as to cover the fin portion 231 which is the heat exchange part of the heat sink. The aim is to improve the cooling efficiency based on the latent heat of vaporization (heat of vaporization) and the efficiency of generating cold heat, as in the second embodiment. In addition, the same code | symbol as 1st Embodiment is attached | subjected to the same component as 1st Embodiment, and the detailed description which overlapped is abbreviate | omitted.

  The vertical size of the housing 21 of the third embodiment is set as follows. That is, the fin portion 231 of the heat exchanger 23 for condensation / evaporation is positioned above the water W which is condensed and liquefied and accumulated in the bottom of the housing 21 due to the water vapor desorbed from the adsorbent S in the desorption-condensation process. Thus, the vertical size of the housing 21 is set. In other words, the water W accumulated at the bottom of the housing 21 at the end of the desorption / condensation process does not come into contact with the fin portion 231 of the condensation / evaporation heat exchanger 23, and has a predetermined height below the condensation / evaporation heat exchanger 23. The lower space 212 is formed excessively.

  The hygroscopic material 27 is made of the same material as the hygroscopic material 26 of the second embodiment, and is formed in a bag shape or a band shape having a predetermined width as in the second embodiment. As shown in FIG. 6 (b), the moisture absorbent 27 of the third embodiment hangs down on the lower space 212 side in a state of covering the fin portion 231 of the heat exchanger 23 for condensation / evaporation if it is a bag. Then, the lowermost part is immersed in the water W, and in the case of a strip shape, the fin part 231 is wound from the upper side to the lower lower space 212 side so that the lower end is immersed in the water W. That is, the hygroscopic material 27 is installed so as to cover the periphery of the fin portion 231 and to be immersed in the water W that the lower end portion hangs down below the lower space 212 and accumulates at the bottom portion. As a result, the fin portion 231 itself of the heat exchanger for condensation / evaporation 23 is not immersed in or submerged in the water W after condensation / liquefaction, but the lower end part of the hygroscopic material 27 becomes the water W. I'm trying to dip.

  In the case of the integrated adsorber 2d of the third embodiment, the water vapor desorbed from the adsorbent S by the desorption-condensation process is condensed and liquefied, and becomes water W in the lower space 212 which is the bottom of the housing 21. When accumulated, at least the lower end portion of the moisture absorbent material 27 is immersed in the water W, the water is sucked up by the moisture absorbent material 27, and the moisture absorbent material 27 is in a state of moisture absorption. When entering the adsorption-evaporation process by switching the process, the adsorbent S is cooled by the low-temperature heat medium supplied to the adsorption / desorption heat exchanger 22, so that the water vapor in the housing 21 is adsorbed by the adsorbent S. It will be. In addition, the condensation / evaporation heat exchanger 23 is supplied with a heat medium whose temperature has been raised by heat exchange with the heat extraction heat exchanger in the cooling unit 5, whereby the condensation / evaporation heat exchanger 23 is It will function as an evaporator. Thereby, the water | moisture content will evaporate from the hygroscopic material 27 in the state which suck | inhaled the water which is a liquid phase adsorbate and was fully moisture-absorbing.

  In this case, as in the second embodiment, there is no hygroscopic material 27 and a part of the fin portion 231 is more easily evaporated than the case where the fin portion 231 is immersed in the water W and evaporates from the surface of the metal fin. The evaporation surface area can be greatly enlarged, and the evaporation efficiency can be greatly increased. As a result, the heat of vaporization can be greatly increased, and the efficiency of cold heat generation can be greatly increased. In addition, in the case of the third embodiment, part or all of the fin portion 231 of the heat exchanger 23 for condensation / evaporation is not submerged in the water W, and the fin portion 231 is separated from the water W. Therefore, the influence of the sensible heat of the water W received when submerged in the alternate switching between evaporation and condensation, that is, the switching of the temperature of the heat medium supplied to the tube 232 of the heat exchanger 23 for condensation / evaporation. It becomes possible to eliminate and suppress. For this reason, it is possible to change the temperature of only the moisture absorbed by the moisture absorbent 27 when alternately switching between evaporation and condensation, and it is necessary to consider the influence of the sensible heat of the water W as described above. As a result, the efficiency can be improved.

<Other embodiments>
In addition, this invention is not limited to said each embodiment, Other various embodiment is included. That is, the hygroscopic material 26 of the second embodiment may be applied to the condensation / evaporation heat exchanger 23 of the first embodiment. In this case, it is possible to further improve the heat generation performance by the synergistic effect of the configuration in which the fin portion 231 is disposed in the deep dish container portion 240 and the hygroscopic material 26.

It is a mimetic diagram showing an example of an adsorption heat pump to which an embodiment of the present invention is applied. It is a section explanatory view showing an integrated adsorption machine of a 1st embodiment. It is a partial expanded sectional explanatory view which made the fin of the adsorption / desorption heat exchanger into the section state. It is a figure corresponding to FIG. 2 which shows the other form of 1st Embodiment. It is sectional explanatory drawing which shows the integrated adsorption device of 2nd Embodiment. 6A is an enlarged sectional explanatory view of the condensation / evaporation heat exchanger of FIG. 5 in the longitudinal direction, and FIG. 6B is an enlarged sectional view of the condensation / evaporation heat exchanger of FIG. 7 in the longitudinal direction. FIG. It is a section explanatory view showing an integrated adsorption machine of a 3rd embodiment. FIG. 3 is a view corresponding to FIG. 2 showing an integrated adsorber to be compared with the present invention in order to guide the problem of the present invention.

Explanation of symbols

2, 2a, 2b, 2c, 2d Integrated adsorber 21 Housing 22 Adsorption / desorption heat exchanger 23 Condensation / evaporation heat exchanger 24 Partition wall 25 Vacuum partition valve 26, 27 Hygroscopic material 210 Reaction space 211 Heat insulation space 231 Fin part (Heat exchange part)
240 Deep dish container part 244 Communication hole

Claims (6)

An adsorption / desorption heat exchanger equipped with an adsorbent that can be switched between adsorbate adsorption and desorption, and a desorbed adsorbate in a housing as a vacuum vessel in which the adsorbate is enclosed. An integrated adsorber provided with a condensation / evaporation heat exchanger that is switched between condensing and evaporating adsorbate for adsorption,
A partition wall arranged to cover a lower side of the condensation / evaporation heat exchanger and partitioning the inside of the housing between the condensation / evaporation heat exchanger and an inner surface of the bottom of the housing;
An integrated adsorber comprising a heat insulating space defined by the partition wall between the partition wall and the inner surface of the bottom of the housing. The integrated adsorber according to claim 1, wherein
The partition wall includes a deep dish container portion opened upward,
The condensing / evaporating heat exchanger is an integrated adsorber arranged so that its heat exchanging portion is accommodated in the deep dish container portion. The integrated adsorber according to claim 1 or 2,
A communication hole formed on the partition wall and communicating with the reaction space above the partition wall and the heat insulation space, and a vacuum partition valve that closes the communication hole so as to be openable and closable,
An integrated adsorber configured so that the vacuum partition valve is opened and the heat insulating space is evacuated together with the reaction space being evacuated. The integrated adsorber according to any one of claims 1 to 3,
A moisture absorbent covering at least the periphery of the heat exchange part of the heat exchanger for condensation / evaporation from the upper side to the lower side;
The hygroscopic material has a liquid phase adsorbate having at least a lower end portion desorbed from the adsorbent of the adsorption / desorption heat exchanger, condensed and liquefied by the condensation / evaporation heat exchanger, and accumulated on the partition wall. An integrated adsorber set to immerse in An adsorption / desorption heat exchanger equipped with an adsorbent that can be switched between adsorbate adsorption and desorption, and a desorbed adsorbate in a housing as a vacuum vessel in which the adsorbate is enclosed. An integrated adsorber provided with a condensation / evaporation heat exchanger that is switched between condensing and evaporating adsorbate for adsorption,
A moisture absorbent covering at least the periphery of the heat exchange part of the heat exchanger for condensation / evaporation from the upper side to the lower side;
At least the lower end of the hygroscopic material is immersed in the adsorbate of the liquid phase that is desorbed from the adsorbent of the adsorption / desorption heat exchanger, condensed and liquefied by the heat exchanger for condensation / evaporation, and accumulated at the bottom of the housing. An integrated adsorber characterized by being set to. The integrated adsorber according to claim 5, wherein
The heat exchanger for condensation / evaporation is an integrated adsorber that is positioned so that its heat exchanging portion is separated above the liquid-phase adsorbate accumulated in the bottom of the housing.

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