JP2012083015A - Adsorption heat pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adsorption heat pump in which the pressure resistance of an adsorber is sufficiently ensured in spite of the easily deformable structure of a container itself of the adsorber.SOLUTION: An adsorption heat pump 1 includes: an adsorber 3 in which an adsorbent 17 is sealed; an evaporator 5 which condenses an adsorption target material when the steam pressure of the adsorption target material reaches saturation steam pressure, and evaporates the liquefied adsorption target material when the steam pressure of the adsorption target material is reduced, meanwhile, piping 7 which is interposed between the adsorber 3 and the evaporator 5 for making an internal space of the adsorber 3 communicates with an internal space of the evaporator 5; and a heat exchange means 9 which takes cold heat out of the evaporator 5 by performing heat exchange by the evaporator 5 when a temperature in the evaporator 5 decreases. The adsorber 3 is constituted to hold the adsorbent 17 with a photo-detection plane 11 by deforming a metal container 13 into tight contact with the adsorbent 17 by receiving atmospheric pressure.

Description

  The present invention relates to an adsorption heat pump.

  Conventionally, an adsorption heat pump system using sunlight has already been proposed (see, for example, Patent Document 1). In such an adsorption heat pump system, an adsorber and an evaporator are connected by piping or the like to form a system isolated from the external space. Adsorption / desorption by an adsorbent built in the adsorber is performed in the system. Then, condensation and vaporization are performed by an evaporator.

  Therefore, in this type of system, it is necessary to prevent outside air from flowing into the system from the outside of the system, and high airtightness is required for the adsorber, the evaporator, the piping connecting them, and the like. Further, the inside of the system may be lower than the atmospheric pressure, and therefore pressure resistance is required so as not to cause a problem even if a pressure difference occurs inside and outside the system.

JP-A-2005-257140

  However, in order to increase the airtightness and pressure resistance of the adsorber, conventionally, the structure of the container itself containing the adsorbent has been changed to a pressure-resistant structure. It was a factor that hindered the spread of heat pump systems.

  The present invention has been made in order to solve the above-described problems, and the purpose of the present invention is an adsorption in which the pressure resistance of the adsorber is sufficiently ensured despite the fact that the adsorber container itself is easily deformed. It is to provide a heat pump.

Hereinafter, the configuration employed in the present invention will be described.
The adsorption heat pump according to claim 1 is capable of adsorbing a substance to be adsorbed, and when adsorbed to adsorb the adsorbent substance that has been adsorbed when heated, an adsorber enclosed therein, and the adsorption object An evaporator that condenses the adsorption target substance when the vapor pressure of the substance reaches a saturated vapor pressure, and evaporates the liquefied adsorption target substance when the vapor pressure of the adsorption target substance decreases. And between the adsorber and the evaporator, a pipe communicating the internal space of the adsorber and the internal space of the evaporator, and when the temperature in the evaporator is reduced, Heat exchange means for taking out cold heat from the evaporator by exchanging heat with the evaporator, and the adsorber has a light receiving surface on one side for receiving sunlight. By receiving sunlight on the light receiving surface side, The adsorbent in the section is heated to desorb the adsorption target substance from the adsorbent, and when the desorbed target substance reaches the evaporator through the pipe, the adsorption is performed in the evaporator. On the other hand, when the target substance is condensed, and at night, when the target substance is adsorbed by the adsorbent, the target substance is evaporated in the evaporator, and the temperature in the evaporator is lowered. The cooling object is configured to be cooled by the cold heat extracted from the evaporator by the heat exchanging means, and at least a part of the adsorber receives atmospheric pressure and is in close contact with the adsorbent. By deforming, the adsorbent is sandwiched between the light receiving surface and the light receiving surface.

  The adsorption heat pump according to claim 2 is the adsorption heat pump according to claim 1, wherein the adsorber has the light receiving surface formed of a transparent material so that sunlight passes through the light receiving surface and the adsorbent. It is characterized in that it has a structure that is irradiated on the surface.

  The adsorption heat pump according to claim 3 is the adsorption heat pump according to claim 2, wherein the adsorber has the light receiving surface formed of transparent glass or transparent plastic, and sandwiches the adsorbent. The portion opposite to the light receiving surface is constituted by a metal container that is deformed into a form that receives atmospheric pressure and adheres closely to the adsorbent.

  The adsorption heat pump according to claim 4 is the adsorption heat pump according to any one of claims 1 to 3, wherein the adsorber is surrounded by a heat insulating material other than the light receiving surface. It is characterized by.

The adsorption heat pump according to claim 5 is the adsorption heat pump according to any one of claims 1 to 4, wherein the adsorbent is silica gel.
Hereinafter, the configuration of the present invention will be described in more detail.

  In the adsorption heat pump of the present invention, the adsorber is installed in a place where sunlight is received. Therefore, during the day, sunlight is irradiated to the adsorber, and the temperature of the adsorber rises. On the other hand, the evaporator is in an installation state that is maintained at substantially normal temperature even when the adsorber receives sunlight and becomes high temperature.

  More specifically, the evaporator is installed, for example, in a place that is shaded during the day. Moreover, in order to prevent the heat from the adsorber whose temperature has risen from being transmitted to the evaporator by heat conduction or convection, for example, the adsorber and the evaporator are installed at a sufficiently distant location. Furthermore, if necessary, a means for promoting heat dissipation (for example, a radiator for exchanging heat with ambient air at room temperature) may be provided between the adsorber and the evaporator.

  In the adsorption heat pump as described above, a substance to be adsorbed that is liquid at room temperature and vaporizes to some extent is placed in the evaporator. The inside of the system from the adsorber to the evaporator through the piping is evacuated using, for example, a vacuum pump, and gas components other than the adsorption target substance are removed out of the system.

  Accordingly, the adsorption target substance in the evaporator is vaporized according to the vapor pressure in the system, and the vaporized adsorption target substance is adsorbed by the adsorbent in the adsorber. In addition, as a result of such adsorption, the vapor pressure in the system decreases, so that the substance to be adsorbed in the evaporator further vaporizes, and these phenomena are continuously observed until the system reaches an equilibrium state. Will happen.

  In this state (for example, the state in which the system has reached an equilibrium state), sunlight is irradiated on the light receiving surface of the adsorber during the daytime, thereby increasing the temperature of the adsorbent. At this time, as described in claim 2, if the light receiving surface is formed of a transparent material, sunlight passes through the transparent light receiving surface and directly hits the adsorbent. The adsorbent itself can be efficiently heated as compared with a structure having no structure (for example, an opaque metal container in which the adsorbent is sealed is exposed to sunlight).

  When the adsorbent is heated, the substance to be adsorbed that has already been adsorbed by the adsorbent is desorbed from the adsorbent, and the vapor pressure in the system increases. However, since the temperature on the evaporator side is lower than that on the adsorber side, the substance to be adsorbed condenses and liquefies in the evaporator and accumulates in the evaporator.

  On the other hand, at night, the light receiving surface of the adsorber is no longer irradiated with sunlight, and heat is released from the adsorbent by heat radiation, and the adsorption capacity of the adsorbent is restored accordingly. The adsorbed substance that has been vaporized is adsorbed by the adsorbent in the adsorber. In addition, with such adsorption, the substance to be adsorbed in the evaporator is also vaporized. As a result, the heat of vaporization is deprived in the evaporator, and the temperature in the evaporator is lowered.

  From the evaporator thus lowered in temperature, the cold heat is taken out by the heat exchanging means, whereby the object to be cooled can be cooled. Specifically, when the object to be cooled is indoors, cooling can be performed by sending cool air taken out by the heat exchange means into the room.

  Further, in this adsorption heat pump, the adsorber has a structure in which the adsorbent is sandwiched between the light receiving surface formed of a transparent material by being deformed into a form in which at least a part thereof receives atmospheric pressure and is in close contact with the adsorbent. It has become.

  As an example of such a structure, as described in claim 3, the light receiving surface is formed of transparent glass or transparent plastic, and the portion on the opposite side of the light receiving surface with the adsorbent interposed therebetween, There may be mentioned those constituted by a metal container that is deformed into a form that receives atmospheric pressure and adheres closely to the adsorbent.

  In this case, as the metal container, for example, a metal container having a shape in which an adsorbent accommodating space is formed when a metal thin plate is pressed and stacked with a transparent glass plate or plastic plate is used. be able to. A thin metal plate having a thickness of less than 1 mm is sufficient.

  In addition to the metal container as described above, a film having a multilayer structure formed by laminating a thin metal thin film and a plastic film, etc., is formed to form a container that is deformed into a form that receives atmospheric pressure and adheres to the adsorbent. Also good.

  If the structure as described above is adopted, the adsorbent itself functions as a part of the pressure-resistant structure that receives pressure from the outside. A container can be comprised with the material of the grade which receives an atmospheric pressure and deform | transforms.

  Therefore, compared with the prior art in which the structure of the container itself that contains the adsorbent is made to have a pressure resistant structure that does not deform even if the inside is depressurized, the container constituting the adsorbent does not cost, and consequently the adsorption heat pump system The entire manufacturing cost can be suppressed.

  In the adsorption heat pump of the present invention, as described in claim 4, the adsorber has a temperature in the adsorber when receiving sunlight when a portion other than the light receiving surface is surrounded by a heat insulating material. As a result, the adsorbent can be regenerated quickly and the adsorption capacity can be recovered.

  Furthermore, in the adsorption heat pump of the present invention, as described in claim 5, the adsorbent is preferably silica gel. In particular, in the case of silica gel, the transparency of the adsorbent particles is higher than that of other various adsorbents. Therefore, as described in claim 2, if the light receiving surface is formed of a transparent material, the silica gel particles in the adsorber. When it is filled, sunlight becomes easy to permeate to the back of the packed bed, and the packed bed of adsorbent can be efficiently heated.

(A) is explanatory drawing which shows schematic structure of an adsorption heat pump, (b) is a longitudinal cross-sectional view of an adsorption device. The graph which shows the performance test result of an adsorption heat pump (the 1). The graph which shows the performance test result of an adsorption heat pump (the 2). (A) is a longitudinal cross-sectional view which shows a part of adsorption machine, (b) is explanatory drawing which shows the external appearance which looked at a part of adsorption machine from the metal container side. (A) is explanatory drawing which expands and shows A part, (b) is explanatory drawing which shows the modification of A part, (c) is explanatory drawing which expands and shows B part, (d) is modification of B part Explanatory drawing which shows an example.

Next, embodiments of the present invention will be described with some specific examples.
[1] First Embodiment The adsorption heat pump 1 described below includes an adsorber 3 and an evaporator 5 as shown in FIG. 1A, and the inside of these is connected via a pipe 7. It has a structure. A three-way valve 7A is provided in the middle of the pipe 7, and evacuation can be performed through the three-way valve 7A. Further, the evaporator 5 is provided with a heat exchange flow path 9 for exchanging heat with the evaporator 5, and by passing a heat exchange medium through the heat exchange flow path 9, cold heat can be taken out from the evaporator 5. It has become.

  Among these configurations, the adsorber 3 includes a transparent light receiving surface 11, a metal container 13, and a heat insulating material 15, as shown in FIG. 1 (b), and between the light receiving surface 11 and the metal container 13. The adsorbent 17 is filled in the internal space formed in the above. One end of the pipe 7 communicates with an internal space formed between the light receiving surface 11 and the metal container 13. A mesh 19 is provided at the tip of the pipe 7 so that the adsorbent 17 does not enter the pipe 7.

  The light-receiving surface 11 has a structure in which a space is secured between the plate glasses 11A and 11B by stacking two colorless and transparent plate glasses 11A and 11B and interposing a spacer 11C between the plate glasses 11A and 11B. . In the present embodiment, the plate glass 11A is 900 mm × 900 mm × 3 mm, the plate glass 11B is 900 mm × 900 mm × 5 mm, and the distance between the plate glasses 11A and 11B is 3 mm.

  When the light receiving surface 11 of the adsorber 3 is formed of such a transparent member, sunlight can be transmitted to the inside of the adsorber 3, and the adsorbent 17 can be directly heated by sunlight. However, the light receiving surface 11 of the adsorber 3 can also be configured by an opaque member such as a metal plate. In this case, the light receiving surface 11 is heated by sunlight, and the heat is transmitted to the adsorbent 17. Become.

  Moreover, if the light receiving surface 11 having the above-described double structure (made of pair glass) is used, the heat retaining property of the adsorber 3 can be improved. However, if there is no problem even if the heat retention is somewhat lowered, the light receiving surface may be formed of a single plate glass. Furthermore, when using the light-receiving surface 11 having a double structure, the distance between the plate glasses 11A and 11B may be arbitrarily set. However, it is preferable that a distance of about 3 to 10 mm is secured in practice.

  As shown in FIG. 4A and FIG. 4B, the metal container 13 has a dish shape in which the opening surface is closed by the light receiving surface 11. In the case of this embodiment, a stainless steel plate having a thickness of 0.3 mm is pressed, and the portion overlapping with the light receiving surface 11 is a square of 900 mm × 900 mm like the light receiving surface 11 and the depth of the recess formed by pressing. Is 30 mm at the maximum.

  The bottom surface of the metal container 13 (the surface shown in FIG. 4 (b)) is formed with a fold 13A by press working, so that flexibility and strength can be improved as compared with a case where a similar fold is not provided. It has been improved. The crease 13A has a substantially square shape when viewed from the bottom surface side of the metal container 13, but the corner portion 13B is rounded so that the force received during evacuation is concentrated locally. It has a difficult structure.

  Note that the crease 13A is not limited to a shape that looks substantially square when viewed from the bottom surface side of the metal container 13, and may be a shape that looks substantially circular, for example. Further, the fold is not limited to a closed annular shape such as a substantially square or a substantially circular shape, but may be a cross-shaped fold, a lattice-shaped fold, a linear fold, or the like. Also, the number of folds may be one or two or more.

  In any case, if the folds such as these are formed, when the inside of the adsorber 3 is depressurized, the metal container 13 has a lower bottom than the one in which the bottom surface is flat. The bottom surface is easily deformed toward the adsorbent 17, whereby the adhesion of the metal container 13 to the adsorbent 17 can be improved.

  The light receiving surface 11 and the metal container 13 are bonded to each other through an epoxy resin adhesive with a width of 10 mm over the entire circumference at the periphery of the both, so that gas does not permeate from portions other than the pipe 7. It constitutes an airtight container.

  The heat insulating material 15 is formed of a foamed resin (foamed phenol heat insulating material, 35 mm thickness, thermal conductivity 0.019 W / m / k) enclosing innumerable closed cells. The above-described metal container 13 is housed in a space formed between the two.

  In this embodiment, the adsorbent 17 is composed of silica gel particles having an average particle diameter of 3 mm. The particle size of the adsorbent 17 is preferably a particle size that allows a gap that allows the vapor of the substance to be adsorbed to flow smoothly even when packed in the adsorber 3, and in the case of silica gel, The average particle diameter is about 20 μm to 6 mm, preferably about 100 μm to 3 mm.

  In the case of silica gel, since the transparency of the particles is higher than other various adsorbents, the sunlight transmitted through the light receiving surface 11 is easily transmitted deeper into the packed layer of silica gel particles. The layer can be heated efficiently.

  In the adsorption heat pump 1 configured as described above, the adsorber 3 is installed in a place that receives sunlight (for example, on the roof, in the garden, on the south side of the house, etc.). Moreover, the evaporator 5 is installed in places (for example, an attic, a basement, the north side of a house, etc.) where it is maintained at substantially normal temperature.

  Moreover, when the temperature of the adsorber 3 rises, it is necessary to prevent the heat from the adsorber 3 from being transferred to the evaporator 5 by heat conduction or convection. Normally, if the pipe 7 is provided in the shade and heat is dissipated in the pipe 7, it is sufficient. However, if necessary, a heat exchanger is provided in the middle of the pipe 7, and air cooling or Water cooling may be performed.

  Furthermore, the adsorption object substance which becomes a liquid at normal temperature and vaporizes to some extent is put in the evaporator 5. In the case of the present embodiment, the adsorption target substance is configured to use water, but may be a substance other than water, for example, alcohol, ammonia, and other various hydrocarbons that are liquid at room temperature. Etc. can be used.

  Then, a vacuum pump or the like (not shown) is connected to the pipe 7 via the three-way valve 7A and evacuation is performed. As a result, the substance to be adsorbed from the system from the adsorber 3 to the evaporator 5 via the pipe 7 Gas components other than are removed.

  When evacuation is performed, the metal container 13 is deformed into a form in which it is in close contact with the adsorbent 17 under the atmospheric pressure, and the adsorbent 17 is sandwiched between the light receiving surface 11. As a result, the adsorbent 17 itself functions as a part of a pressure-resistant structure that receives pressure from the outside, so that the metal container 13 itself is not required to have excessive pressure resistance, and is deformed by receiving atmospheric pressure. Even if the metal container 13 is made of such a material, it can be operated without any problem.

  When evacuation is performed, the adsorption target substance in the evaporator 5 is vaporized according to the vapor pressure in the system, and the vaporized adsorption target substance is adsorbed by the adsorbent 17 in the adsorber 3. Will be. Further, as a result of such adsorption, the vapor pressure in the system is lowered, so that the substance to be adsorbed in the evaporator 5 is further vaporized, and these phenomena continue until the system reaches an equilibrium state. Will happen.

  In this state, sunlight is irradiated to the light receiving surface of the adsorber 3 during the daytime, and thereby the temperature of the adsorbent 17 rises. In the present embodiment, when experimentally confirmed, the temperature in the adsorber 3 sometimes reached a high temperature exceeding 100 ° C. at the maximum.

  When the adsorbent 17 is heated in the adsorber 3 having such a high temperature, the substance to be adsorbed is desorbed from the adsorbent 17 and the vapor pressure in the system increases. However, the temperature on the evaporator 5 side is lower than that on the adsorber 3 side, and in the case of this embodiment, it is in the temperature range of about 30 ° C., so the substance to be adsorbed (in the case of this embodiment) from the adsorber 3 side. When water vapor flows in, the substance to be adsorbed condenses and liquefies in the evaporator 5 and accumulates in the evaporator 5.

  On the other hand, at night, the light receiving surface of the adsorber 3 is no longer irradiated with sunlight, and further, the adsorbent 17 is dissipated by heat radiation, and the adsorbing capacity of the adsorbent 17 is restored accordingly. The adsorption target substance vaporized in the system is adsorbed by the adsorbent 17 in the adsorber 3. In addition, with such adsorption, the adsorption target substance in the evaporator 5 is also vaporized. As a result, the heat of vaporization is deprived in the evaporator 5, and the temperature in the evaporator 5 is lowered. In the case of the embodiment, the temperature in the evaporator 5 reaches a temperature range below freezing point.

  Therefore, by circulating the heat exchange medium through the heat exchange flow path 9, it is possible to take out the cold heat from the evaporator 5 which has been lowered in temperature, thereby cooling the object to be cooled, such as cooling the room. .

[2] Second Embodiment An adsorption heat pump 1 similar to that of the first embodiment was constructed, and the performance test was performed. However, in the second embodiment, as the adsorber 3, a light receiving surface (glass) having a 23 cm square (thickness is 2.5 cm) is used. In addition, a projector (500 W) was used as a heat source for heating the adsorber 3, and the distance between the projector heat source and the light receiving surface (glass) was 20 cm.

  Then, illuminate the light receiving surface of the adsorber 3 from the projector, imitating the time zone corresponding to the daytime, and turn off the projector, imitating the time zone corresponding to nighttime, for 48 hours. The temperature of each part of the heat pump 1 was measured. The result is shown in FIG.

  In the graph of FIG. 2, “surface” is the temperature measured on the surface side inside the adsorber 3, “back surface” is the temperature measured on the back side inside the adsorber 3, and “connection pipe” is the adsorber 3 and the evaporator 5. , “Outside air” represents the temperature around the adsorption heat pump 1, and “evaporator” represents the temperature inside the evaporator 5.

  As is clear from this graph, the temperature inside the adsorber 3 rises abruptly on both the front side and the back side during the time period corresponding to the daytime (the time period when the projector is turned on). Reached a temperature range exceeding 100 ° C. at the maximum. At this time, the temperature in the evaporator 5 also became maximum (time t1 in FIG. 2).

  On the other hand, when the projector was turned off at this point, the temperature inside the adsorber 3 dropped rapidly thereafter. At this time, the temperature in the evaporator 5 also decreased, and the temperature in the evaporator 5 reached below freezing point at time t2 in FIG. That is, the temperature in the evaporator 5 is extremely low during the time corresponding to the night (the time when the projector is lit).

Therefore, if the cold heat in the evaporator 5 is taken out using the heat exchange channel 9 or the like, it can be used for cooling at night.
[3] Third Embodiment An adsorption heat pump 1 similar to that in the first embodiment and the second embodiment was constructed, and the performance test was performed. However, in this third embodiment, as the adsorber 3, a 31 × 54 × 2.5 cm one was used. Moreover, as the metal container 13, what pressed the copper plate was utilized, and the glass which makes the light-receiving surface 11, and the copper plate which makes the metal container 13 were adhere | attached with the epoxy adhesive agent.

  Furthermore, the inside of the adsorber 3 was filled with spherical semi-transmissive black silica (particle size 5-10 mesh) obtained by gelling silica sol mixed with ink (filling amount: 2.85 kg). By using such colored silica, absorption and heat generation of sunlight can be promoted. As the evaporator 5, a glass bottle having a volume of 3 liters was used, and the evaporator 5 was filled with 1 liter of water.

  Among the adsorption heat pumps 1 configured as described above, the adsorber 3 was installed in a place exposed to sunlight, and the temperature of each part of the adsorption heat pump 1 was measured over 48 hours. The result is shown in FIG.

  In the graph of FIG. 3, “adsorber back” is the temperature measured on the back side inside the adsorber 3, “adsorber table” is the temperature measured on the surface inside the adsorber 3, and “evaporator” is the evaporator 5. The internal temperature, “connecting pipe” represents the temperature measured in the pipe 7 connecting the adsorber 3 and the evaporator 5, and “outside air temperature” represents the temperature around the adsorption heat pump 1.

  As is apparent from this graph, during the day, the temperature inside the adsorber 3 rose on both the front side and the back side, and the maximum temperature on the front side reached a temperature range exceeding 80 ° C. At this time, the temperature in the evaporator 5 also became maximum (time t3 in FIG. 3). At this time, the amount of water in the evaporator 5 was 980 ml.

  Thereafter, the temperature of each part tended to decrease toward the sunset time. At this time, the temperature in the evaporator 5 also decreased and decreased to nearly 10 ° C. at time t4 in FIG. At this time, the amount of water in the evaporator 5 was 820 ml. From this, it can be seen that 160 ml of water evaporated in the evaporator 5, and the temperature in the evaporator 5 decreased with the evaporation.

[4] Other Embodiments Although the embodiment of the present invention has been described above, the present invention is not limited to the specific embodiment described above, and can be implemented in various other forms.

  For example, in the above embodiment, the container (the light receiving surface 11 and the metal container 13) that encloses the adsorbent 17 is exemplified by a specific shape and a specific size, but the specific form of such a container is arbitrary, Other forms may be used.

As an example, the thickness of the packed bed of the adsorbent 17 is 30 mm in the above embodiment, but this may be about 1 to 10 cm, and preferably about 2 to 5 cm. The area of the light-receiving surface is not particularly limited, but is practically preferably about 0.1 to 10 m ² , at least gas impervious, and with respect to heat resistance, heat resistance that can withstand temperatures of about 100 to 150 ° C. It is preferable to use a material.

  Moreover, although the thing formed with the stainless steel plate was illustrated as the metal container 13 in the said embodiment, the container formed with other metal raw materials, such as a copper plate and an aluminum plate, and the container formed with the plastic film etc. are utilized. Also good.

  Further, in order to promote heat transfer in the adsorber 3, a highly heat-conductive cross-linking material (for example, a metal component) is formed between the sunlight receiving surface side (light receiving surface 11 side) and the back surface side (metal container 13 side). ). If such a highly heat-conductive crosslinking material is provided, the inside of the adsorber 3 can be heated quickly and uniformly.

  Moreover, in the said embodiment, although the example which uses a silica gel as the adsorption agent 17 was shown, you may use adsorption agents other than a silica gel, for example, a silicalite, a zeolite, activated carbon, an aluminum phosphate, MCM (Mobil company), Particulate adsorbents such as FSM (Toyota Chuken) can also be used.

  In addition, when the sunlight receiving surface is formed of a transparent body as in the above embodiment, sunlight can be transmitted to the deep layer of the packed bed by using a transparent adsorbent as it is near the light receiving surface. However, an adsorbent that absorbs sunlight may be disposed in a deep layer far from the light receiving surface.

  Examples of such adsorbents that absorb sunlight include those in which the surface of adsorbent particles is coated with colored powders such as activated carbon, graphite, and other dark pigments having high light absorption, or such colored materials. An example is one in which the powder is uniformly dispersed inside the adsorbent particles.

  Furthermore, in the said embodiment, although the shape of the metal container 13 was made into the form which expands and shows to Fig.5 (a), the bellows structure 21 as shown in FIG.5 (b) is provided in this part. Thus, when vacuuming, the metal container 13 may be deformed more flexibly and be in close contact with the adsorbent 17.

  Moreover, in the said embodiment, although the shape of the corner part 13B of a recessed part was made into the form which draws a circular arc as shown in FIG.5 (c) in the metal container 13, it shows to FIG.5 (d). Thus, it may be in the form of drawing a polygon, and this can alleviate the concentration of force locally.

  DESCRIPTION OF SYMBOLS 1 ... Adsorption heat pump, 3 ... Adsorber, 5 ... Evaporator, 7 ... Piping, 7A ... Three-way valve, 9 ... Heat exchange flow path, 11 ... Glass plate, DESCRIPTION OF SYMBOLS 13 ... Metal container, 13A ... Fold, 13B ... Corner part, 15 ... Heat insulating material, 17 ... Adsorbent, 21 ... Bellows structure.

Claims (5)

An adsorber in which an adsorbent capable of adsorbing an adsorption target substance and desorbing the adsorbed target substance adsorbed when heated is enclosed inside;
When the vapor pressure of the adsorption target substance reaches the saturated vapor pressure, the adsorption target substance is condensed, while when the vapor pressure of the adsorption target substance decreases, the liquefied adsorption target substance is evaporated. An evaporator to
A pipe that is interposed between the adsorber and the evaporator and communicates the internal space of the adsorber and the internal space of the evaporator;
A heat exchanging means for taking out cold from the evaporator by exchanging heat with the evaporator when the temperature in the evaporator decreases;
The adsorber has a light receiving surface that receives sunlight on one side, and during the day, by receiving sunlight on the light receiving surface side, the adsorbent inside is heated, The adsorption target substance is desorbed from the adsorbent, and when the desorbed adsorption target substance reaches the evaporator via the pipe, the adsorption target substance is condensed in the evaporator, while at night When the adsorption target substance is adsorbed by the adsorbent, the adsorption target substance evaporates in the evaporator to lower the temperature in the evaporator, and at that time, is taken out from the evaporator by the heat exchange means It is configured to be able to cool the object to be cooled with cold heat,
The adsorber has a structure in which at least a part is deformed into a form in which the adsorbent is brought into close contact with the adsorbent by receiving atmospheric pressure so that the adsorbent is sandwiched between the adsorbent and the light receiving surface. Adsorption heat pump. The adsorber has a structure in which the light receiving surface is formed of a transparent material, so that sunlight passes through the light receiving surface and is irradiated onto the adsorbent. Adsorption heat pump. In the adsorber, the light receiving surface is formed of transparent glass or transparent plastic, and the portion opposite to the light receiving surface with the adsorbent interposed therebetween is more easily deformed than the light receiving surface. It is constituted by a metal container having a structure, and when the inside of the adsorber is depressurized, the metal container is pressurized by atmospheric pressure, and is deformed into a form in close contact with the adsorbent. The adsorption heat pump according to claim 2. The adsorption heat pump according to any one of claims 1 to 3, wherein a portion other than the light receiving surface of the adsorber is surrounded by a heat insulating material. The adsorption heat pump according to any one of claims 1 to 4, wherein the adsorbent is silica gel or colored silica gel containing a pigment.