JPH0674595A - Adsorption type cooling system - Google Patents

Abstract

PURPOSE:To provide an adsorption type cooling system in which a heating temperature of an adsorber can be maintained substantially constant even when heating means having variable heat quantity is used. CONSTITUTION:When low temperature air of an atmosphere inlet passage 28 is supplied to a first adsorber 20 through a first air passage 26, the air passed through the adsorber 20 is discharged toward a second adsorber 21, high temperature air discharged from an exhaust gas inlet passage 25 flows toward the adsorber 21 by the flow of the air, supplied to the adsorber 21 to heat the absorber 21. On the other hand, the low temperature air supplied to the adsorber 20 cools the adsorber 20, absorbs heat of the adsorber 20 to be combined with high temperature air to be discharged from the passage 25 and fed to the adsorber 21. In this case, when a heat quantity of the passage 25 is large, an air flow rate of the passage 28 is increased, while when it is small, the air flow rate of the passage 28 is decreased, and heating temperatures of the adsorbers 20, 21 become substantially constant.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adsorption type cooling system applicable to an air conditioner for a vehicle, a residential building or a ship, a cooling device for a container for transporting food or medicines requiring refrigeration. is there.

[0002]

2. Description of the Related Art Conventionally, as a cooling system used in an air conditioner, a refrigerating device, etc., a heat pump type is generally known, but recently, an adsorption type cooling system using an adsorbent made of zeolite or the like. Is proposed.
As a conventional technique related to this, for example, Japanese Patent Laid-Open No.
There is one described in Japanese Patent Publication No. 2-5060.

FIG. 9 shows the basic principle of the adsorption type cooling system, in which the adsorber 1 and the cooling container 2 are connected to each other by an opening / closing valve 3.
Is a single adsorption cooling system connected by a conduit 4 having An adsorbent 1a made of zeolite or the like is housed in the adsorber 1, and a heat exchange pipe 5 for heating or cooling is in contact with the adsorbent 1a. Water as an adsorption medium is contained in the cooling container 2, and a cooling pipe 6 through which air to be cooled flows is thermally contacted with the water, and the adsorber 1, the pipe line 4 and the inside of the cooling container 2 are in contact with each other. Is in a vacuum. Further, a condenser 7 that exchanges heat with the outside air is provided on the side of the cooling passage 2 of the conduit 4. With this cooling system,
When the opening / closing valve 3 of the pipeline 4 is opened, as shown in FIG. 9 (a), the adsorbing action of the adsorbent 1a causes the water in the cooling container 2 to evaporate and become water vapor, and the water inside the adsorber 1 passes through the pipeline 4. Adsorbent 1
Adsorbed by a. As a result, the latent heat when the water in the cooling container 2 evaporates is absorbed from the cooling container 2 side, so that the temperature in the cooling container 2 decreases and the air in the cooling pipe 6 is cooled. Such an operation is called an adsorption process. Next, the operation of returning the water adsorbed by the adsorbent 1a to the cooling container 2 is performed.
That is, as shown in FIG. 9B, the adsorbent 1a is heated by circulating a high-temperature heat medium from an external heat source such as exhaust gas of a vehicle engine through the heat exchange pipe 5 to heat the adsorbent 1a.
The water adsorbed on a is separated. As a result, the water vapor becomes water in the condenser 7 through the conduit 4,
It is collected in the cooling container 2. Such an operation is called a reproduction process. In this case, the adsorption means a state where water molecules are held between the molecules of the adsorbent, and by heating the adsorbent in this state, water is separated from the adsorbent and regenerated.

However, in the above-mentioned single adsorption type cooling system, since the adsorption process and the regeneration process must be alternately performed in the same system, continuous cooling cannot be performed. Therefore, as shown in FIG. 10, a dual adsorption cooling system having two adsorbers 8 and 9 has been proposed. Each adsorber 8, 9 has an on-off valve 10,
One cooling vessel 1 by means of conduits 12, 13 with 11
4, the cooling pipe 15 similar to the above is in thermal contact with the water in the cooling container 14. Heat exchange pipes 16 and 17 are in thermal contact with the adsorbents 8a and 9a in the adsorbers 8 and 9, respectively, and condensers 18 and 19 are provided in the pipe lines 12 and 13, respectively. ing. In this cooling system, for example, the adsorption process is performed in one adsorber 8 and the regeneration process is performed in the other adsorber 9. Then, when the adsorbers 8 and 9 have completed their respective strokes, a switching operation is performed so as to perform the reverse operation. At that time, since the adsorber 9 that has completed the regeneration process is at a high temperature, air at a low temperature or room temperature is circulated through the heat exchange pipe 17 to cool the adsorbent 9a. By repeating such an operation periodically, it is possible to perform continuous cooling.

[0005]

By the way, since the exhaust gas of the vehicle engine used as the heating means has a variation in the amount of heat depending on the operating state of the vehicle, it is extremely difficult to keep the heating temperature of the adsorber constant. Have difficulty. However, the zeolite used in the adsorbent is decomposed and deteriorated when the temperature exceeds 500 ° C.
If the temperature is lower than ℃, the water cannot be separated. Therefore, there is a problem that the system operation is hindered if there is an extreme temperature unevenness in the heat quantity of the heating means.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an adsorption device capable of keeping the heating temperature of an adsorber substantially constant even when a heating means having a varying amount of heat is used. Providing a cooling system.

[0007]

In order to achieve the above-mentioned object, the present invention selectively uses a pair of adsorbers containing adsorbents, a cooling container connected to each adsorber, and each adsorber. A cooling means for cooling and a heating means for selectively heating each of the adsorbers, and an adsorption step for adsorbing the adsorption medium in the cooling container into the adsorbers by cooling one of the adsorbers, and the other. In the adsorption type cooling system, in which the adsorption medium in the adsorber is separated by heating the adsorber and the regeneration process for returning the adsorbent into the cooling container is alternately performed in each adsorber, the cooling means and the heating means are It consists of a low-temperature air blow passage that feeds low-temperature air to the adsorber that is performing the stroke, and a hot air blow passage that feeds high-temperature air to the adsorber that is performing the regeneration stroke. That has passed through the adsorber that is performing Install each adsorber facing each other so that it flows toward the adsorber that is performing the regeneration process, and let the discharge port of the hot air blow passage face between each adsorber, and the heat quantity of the hot air blow passage By determining the magnitude of the heat quantity, the air quantity control means is provided to increase the air quantity of the low temperature air blow passage when the heat quantity is large and decrease the air quantity of the low temperature air blow passage when the heat quantity is small.

[0008]

According to the adsorption cooling system of the present invention, the high temperature air in the high temperature air blowing path is fed between the adsorbers, and the low temperature air in the low temperature air blowing path is the adsorber performing the adsorption process. Be delivered to. At that time, since the air that has passed through the adsorber that is performing the adsorption process flows toward the adsorber that is performing the regeneration process, the high temperature air discharged from the hot air blowing passage is regenerated by this air flow. It flows toward the adsorber which is performing the stroke, and the adsorber is heated. Further, the low-temperature air fed to the adsorber that is performing the adsorption step cools the adsorber and absorbs the heat of the adsorber, and joins with the high-temperature air discharged from the hot-air blowing passage to perform the regeneration step. It is fed to the adsorber that is performing. that time,
When the amount of heat in the high-temperature air duct is large, the amount of air in the low-temperature air duct is increased, and when the amount of heat is small, the amount of air in the low-temperature air duct is decreased. The heating temperature of the vessel becomes almost constant.

[0009]

1 to 6 show an embodiment of the present invention, showing a vehicle air conditioner to which the adsorption cooling system of the present invention is applied. In the figure, 20 and 21 are adsorbents 20,
21a is a first and second adsorber, 22 is a cooling container containing water as an adsorption medium, 23 is a condenser, 24 is a heat exchanger inside the vehicle, and 50 is an air volume controller.

Although not shown in detail, each of the adsorbers 20 and 21 is formed in a heat exchanger type having header pipes at both ends, and is made of zeolite or the like in a large number of tubes arranged between the header pipes. An adsorbent is contained. The adsorbers 20 and 21 are arranged at a distance from each other, and the discharge port of the exhaust gas introducing passage 25 connected to an engine (not shown) of the vehicle faces the adsorber 20 and 21, and the adsorbers 20 and 21 face each other. The surface is slightly arranged so as to face the discharge port side of the exhaust gas introduction passage 25. Further, one end of each of the first and second air passages 26, 27 faces the opposite side of each adsorber 20, 21, and the other end of each air passage 26, 27 has an outside air introduction passage 28 and an exhaust air passage 29. It is connected to the end in a cross shape. Therefore, the exhaust gas introducing passage 25 constitutes a high temperature air blowing passage, and the outside air introducing passage 28 and the respective blowing passages 26, 27 constitute a low temperature air blowing passage. The other end of the outside air introduction path 28 is open to the outside in the traveling direction side of the vehicle, and the other end of the exhaust air blowing path 29 is opened to the outside in the opposite direction to the traveling direction of the vehicle
Air supply and exhaust are effectively performed. A blower 30 for forced air supply is installed in the outside air introduction passage 28. Further, a flap 31 is provided at the intersection of the air passages 26 and 27, the outside air introduction passage 28, and the exhaust air passage 29 so that two of the air passages can be switched to each other. That is, the flap 31 rotates so as to switch between two positions, and at one position, the first air passage 26 and the outside air introduction passage 2 are rotated.
8, the second air passage 27 and the exhaust air passage 29 communicate with each other, and at the other position, the first air passage 26 and the exhaust air passage 29,
The second air blowing passage 27 and the outside air introducing passage 28 communicate with each other.

The cooling container 22 is connected to the first adsorber 20 via the first vapor outward path 32 and to the second adsorber 21 via the second vapor outward path 33, respectively.
On-off valves V1 and V2 are provided at 3. In this embodiment, water is used as the adsorption medium contained in the cooling container 22, but other liquid such as alcohol may be used. Further, the respective vapor outward paths 32 and 33 can be communicated with each other by a bypass passage 34 which is branched and connected to each other, and the bypass passage 34 has two opening / closing valves V3 and V3.
4 are provided. Further, one end of a steam return path 35 is branched and connected to the middle of each of the opening / closing valves V3 and V4 in the bypass passage 34, and an opening / closing valve V5 is provided in the steam return path 35. The bypass passage 34 also functionally constitutes a part of the steam return passage 35. Further, the other end of the vapor return path 35 is connected to the condenser 23, and the condenser 23 is connected to the cooling container 22 via a small-diameter condensation passage 36. Regarding the flow cross section of each passage, the cross sectional area of the steam return passage 35 and the bypass passage 34 is about 50% of the cross sectional area of the vapor outward passage 32 (33), and the cross sectional area of the condensation passage 36 is that of the steam return passage 35 and the bypass passage 34. It is set to about 0.6% of the cross-sectional area.

The heat exchanger 24 is connected to a cooling pipe 37 which is in thermal contact with the water in the cooling container 22.
Water between the cooling container 22 and the pump 38 provided in the
A heat medium such as brine is circulated. Further, the heat exchanger 24 is arranged between the intake air passage 39 and the blowout air passage 40 for the air in the vehicle, and the configuration described below is provided in a known vehicle air conditioner. That is, the blower 41 is installed in the intake air passage 39, the outside air introduction passage 42 is connected in the middle of the intake air passage 39, and the outside air introduction passage 42 can be opened and closed by the flap 43. Further, the blowout air passage 40 branches into a plurality of air outlets 44 provided in a driver's seat, a passenger seat, etc., and a louver 45 is provided in each air outlet 44. Further, a heating pipe 46 connected to a radiator (not shown) of the engine is installed midway in the blowout air passage 40, and is used for reheating during heating or dehumidification. This heating pipe 4
In 6, the cooling water (high temperature) of the radiator is circulated by opening the opening / closing valve 47 so that the air in the blowout air passage 40 can be heated. Also, the heating pipe 46
A flap 48 is provided on the windward side of the flap 4
By setting 8 to any position, the heating pipe 46
The amount of air passing through can be adjusted.

The air volume control unit 50 is composed of a microcomputer or the like and is connected to the blower 30.
As shown in FIG. 2, the motor 30a of the blower 30 has a power source 5
1 and first and second resistors 5 provided in parallel with each other
The resistance value of each resistor is smaller in the first resistor 52 and larger in the second resistor 53, which is connected to the circuit composed of 2, 53. In addition, the resistors 52 and 53 and the power source 51
The first and second switches 54 and 55 are provided between and, and the switches 54 and 55 are opened and closed by the first and second relays 56 and 57, respectively. On the other hand, a rotation speed sensor 58 used for an igniter (not shown) or the like is connected to the engine E used as a heating means for the adsorbers 20 and 21, and the rotation speed sensor 58 is connected to the air volume control unit 50. Has been done. Air volume controller 5
0 sets a predetermined upper limit value RH and lower limit value RL with respect to the detection value R of the rotation speed sensor 58, and each set value RH to R
Between L is the standard value for the regeneration process.

In the above structure, for example, the first adsorber 2
When the adsorption stroke is 0 and the regeneration stroke is being performed by the second adsorber 21, the flap 31 is set to the position shown by the solid line in the figure, and the first air passage 26, the outside air introduction passage 28, and the second air passage 27 are set.
And the exhaust air flow path 29 communicate with each other. This allows
The hot air (exhaust gas) in the exhaust gas introduction passage 25 is transferred to each adsorber 2
The low temperature air (outside air) in the outside air introduction passage 28 is fed to the first adsorber 20 through the first air passage 26 as indicated by the broken line arrow in the figure. At that time, since the air that has passed through the first adsorber 20 is blown out toward the second adsorber 21, the air discharged from the exhaust gas introduction passage 25 flows toward the second adsorber 21 due to the flow of this air. Second
It is fed to the adsorber 21. As a result, the second adsorber 21
The air that has been heated and has passed through the second adsorber 21 is exhausted to the outside through the second air passage 27 and the exhaust air passage 29 as indicated by the solid line arrow in the figure. In addition, since the second adsorber 21 is obliquely arranged toward the discharge port of the exhaust gas introduction passage 25, the high temperature air in the exhaust gas introduction passage 25 is discharged to the second adsorber 21.
Flows in smoothly. On the other hand, the low temperature air fed to the first adsorber 20 cools the first adsorber 20 and
The heat of the adsorber 20 is absorbed, merges with the high temperature air discharged from the exhaust gas introduction passage 25, and is fed to the second adsorber 21. Thereby, the heat of adsorption (sensible heat) generated in the first adsorber 20 is used to heat the second adsorber 21. Also, each adsorber 2
In the case of performing the reverse stroke to the above at 0 and 21, the flap 31 is switched to the position shown by the alternate long and short dash line in the figure, whereby the air flow direction of the exhaust air blowing passage 29 and the outside air introducing passage 28 changes, and the first adsorber 20 Is heated and the second adsorber 21 is cooled.

Next, referring to the principle diagram of FIG. 3 and the P-1 / T diagram of FIG. 4, the operation of the adsorption cooling system in this embodiment, that is, the operation between the adsorbers 20 and 21 and the cooling container 22 will be described. Explain. Incidentally, in FIG. 3, each constituent part is shown in a shape slightly different from that of FIG. 1 for facilitating the description. Also,
In FIG. 4, P is the water vapor pressure, T is the temperature, and the numerical values shown in the figure are examples.

That is, the adsorption process in the first adsorber 20
When performing the regeneration process in the adsorber 21, first the on-off valves V1, V2, V3, V4 are closed and the on-off valve V5 is opened. As a result, the temperature inside the first adsorber 20 has a water content of 6%.
Is cooled to 150 ° C. on the water equivalent line (C ′ → D), and the temperature in the second adsorber 21 is 1 on the water equivalent line having a water content of 22%.
It is heated to 50 ° C. (A ′ → B). At this time, the water vapor pressure P1 in the first adsorber 20 is 10 mbar, and the water vapor pressure P2 in the second adsorber 21 is 450 mbar. Incidentally, P3 is the average value of P1 and P2. Next, the opening / closing valves V1, V4, V5 are opened while the opening / closing valves V2, V3 are kept closed. As a result, the water in the cooling container 22 evaporates under the pressure of 10 mbar and the first adsorber 2 passes through the first vapor outward path 32.
It is adsorbed by the adsorbent 20a of 0. At that time, the heat in the cooling container 22 is taken by the latent heat of vaporization of water. And the first
By continuing to cool the inside of the adsorber 20, the cooling container 22
Water in the first adsorber 20 is sequentially adsorbed by the adsorbent 20a.
The inside is finally cooled to 70 ° C. (D → A). on the other hand,
The inside of the second adsorber 21 is heated to 280 ° C. under a pressure of 450 mbar (B → C), the water adsorbed on the adsorbent 21a of the second adsorber 21 is separated and regenerated, and the bypass passage 3
4 and the steam return path 35 to flow into the condenser 23. Then, the water condensed in the condenser 23 is returned to the cooling container 22 through the condensation passage 36. Such operation is from 1 minute to 1
It takes place on a daily cycle. Moreover, the reason why the flow cross-sectional areas of the vapor outward paths 32 and 33, the vapor return path 35, and the condensing passage 36 become smaller in order is that the density of water vapor increases in this order (liquid in the condensing passage 36), and In the passage 36, it is desirable that the flow rate be almost the same as the amount of water evaporated from the cooling container 22.

At the end of the above process, the inside of the second adsorber 21 that has undergone the regeneration process has a high temperature of about 280 ° C., and the first adsorber 20 that has completed the adsorption process has a low temperature of about 70 ° C. Has become. Here, before switching the adsorbers 20 and 21 to the reverse process to the above-described process, the following intermediate process is performed to reuse the difference in enthalpy between the adsorbers 20 and 21 so as not to generate waste heat. That is, the open / close valve V
1, V2 and V5 are closed, only the opening / closing valves V3 and V4 of the bypass passage 34 are opened, and the adsorbers 20 and 21 are closed.
Are communicated with each other without the cooling container 22. As a result, a part of the heat in the second adsorber 21 moves into the first adsorber 20, the temperature in the first adsorber 20 that is going to perform the regeneration process next rises, and the adsorption process is performed. The temperature in the intended second adsorber 21 decreases. This intermediate step is performed only for a period of about 1% to 5% of the switching cycle of the adsorption / regeneration step. Although the intermediate stroke cannot be plotted in the diagram of FIG. 3, it can be said that it is part of the adsorption / regeneration stroke.

In this way, the inside of the cooling container 22 is continuously cooled by repeating the adsorption process → intermediate process → regeneration process → intermediate process → adsorption process in each adsorber 20, 21. FIG. 4 shows the open / closed states of the valves V1, V2, V3, V4 and V5 in the respective strokes.

Now, returning to FIG. 1, the air conditioning operation inside the vehicle will be described. That is, as the inside of the cooling container 22 is cooled by the cooling system, the cooling pipe 37 in the cooling container 22 is cooled, and the heat medium in the cooling pipe 37 having a low temperature flows into the heat exchanger 24. On the other hand, the in-vehicle air sucked into the intake air passage 39 is fed to the heat exchanger 24 and cooled by the heat exchanger 24. Then, the cooled air is blown out into the vehicle from each outlet 44 through the blowout air passage 40. At that time, by operating the flap 43 of the outside air introduction passage 42, the intake ventilation passage 3 can be operated as necessary.
It is possible to introduce outside air into the inside 9. By operating the flap 48 of the heating pipe 46, the air in the blowout air passage 40 is heated.

The air volume of the blower 30 is controlled by the air volume control unit 50. Since the heat quantity of the exhaust gas discharged from the exhaust gas introducing passage 25 changes depending on the operating condition of the vehicle such as the engine speed, the heat quantity of this exhaust gas is changed. It is desirable to change the air volume of the blower 30 in accordance with the change of Therefore, the operation of the air volume control unit 50 including such control will be described below with reference to the flowchart of FIG.

First, when it is determined that the detected value R of the rotation speed sensor 58 is larger than the upper limit value RH (S1), the first switch 54 is turned on (S2), and the second switch 55 is turned off.
Set to F (S3). Thereby, the motor 3 of the blower 30
0a is applied with a voltage via the first resistor 52,
Since the resistance value of the resistor 52 is small, the motor 30a rotates at high speed, and the air volume of the outside air introduction passage 28 increases. Then, after waiting for a time (S4), the process returns to step S1 and, for example, the detection value R of the rotation speed sensor 58 is smaller than the upper limit value RH (S4).
1) If it is determined that it is larger than the lower limit value RL (S
5), both the first and second switches 54 are turned on (S6, S7). Thereby, the motor 30 of the blower 30
A voltage is applied to a through both the first and second resistors 52 and 53, and the combined resistance value of the first and second resistors 52 and 53 is intermediate between the resistors 52 and 53. Thirty
a rotates at a medium speed, and the air volume in the outside air introduction passage 28 becomes standard. Then, wait for the time (S4), and then step S1 again.
Return to, for example, the detection value R of the rotation speed sensor 58 is the upper limit value R
If it is determined that it is smaller than H (S1) and smaller than the lower limit value RL (S5), the first switch 54 is turned off (S8) and the second switch 55 is turned on (S9). As a result, the motor 30a of the blower 30 has the second resistor 5
3, a voltage is applied through the first resistor 52, and the resistance value of the first resistor 52 is large. Therefore, the motor 30a rotates at a low speed, and the outside air introduction path 2
The air volume of 8 decreases.

As described above, according to the adsorption cooling system of this embodiment, the rotation speed of the engine E used as a heating means for the adsorbers 20 and 21 is detected by the rotation speed sensor 58, and the detected value is detected. The amount of heat is determined based on the above, and when the amount of heat is large, the amount of air in the outside air introducing passage 28 is increased, and when the amount of heat is small, the amount of air in the outside air introducing passage 28 is decreased. Even if the heat quantity of the exhaust gas from the engine E fluctuates due to the
The heating temperature of 0 and 21 can be made almost constant, and the operating state of the system can be always kept good.

In the above embodiment, the amount of air blown by the blower 30 is controlled, but as shown in FIG.
8 is provided with an air volume adjusting damper 59, or the flap 31 is adjusted to an arbitrary opening as shown in FIG.
Even if the amount of inflow into the first air duct 26 is changed,
The same effect as described above can be obtained. Further, in the above embodiment, the amount of heat is determined by detecting the number of revolutions of the engine E. However, the amount of heat is determined based on the traveling speed of the vehicle and the temperature of the exhaust gas introducing passage 25. You may

[0024]

As described above, according to the adsorption type cooling system of the present invention, the heating temperature of the adsorber can be made substantially constant even when the heating means of which the amount of heat fluctuates is used, and the operation of the system can be performed. You can always keep good condition.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a vehicle air conditioner including an adsorption cooling system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a control system

[Figure 3] Principle of adsorption cooling system

FIG. 4 shows P showing an adsorption / regeneration process of an adsorption cooling system.
-1 / T diagram

FIG. 5 is a diagram showing an open / closed state of each open / close valve.

FIG. 6 is a flowchart showing the operation of a switching control unit.

FIG. 7 is a configuration diagram of main parts showing another embodiment of the present invention.

FIG. 8 is a configuration diagram of main parts showing another embodiment of the present invention.

FIG. 9 is a principle diagram of a single adsorption cooling system showing a conventional example.

FIG. 10 is a principle diagram of a dual adsorption cooling system showing a conventional example.

[Explanation of symbols]

20 ... 1st adsorption device, 21 ... 2nd adsorption device, 20a, 21a
... Adsorbent, 22 ... Cooling container, 25 ... Exhaust gas introduction passage, 26
... first air passage, 27 ... first air passage, 28 ... outside air introduction passage,
29 ... Exhaust air passage, 30 ... Blower, 50 ... Air volume control unit,
51 ... Revolution sensor, E ... Engine, V1, V2, V
3, V4, V5 ... Open / close valve.

Claims (1)

[Claims] 1. A pair of adsorbers accommodating an adsorbent, a cooling container connected to each adsorber, a cooling means for selectively cooling each adsorber, and an alternative heating for each adsorber. An adsorbing step of adsorbing the adsorption medium in the cooling container into the adsorber by cooling one of the adsorbers,
In the adsorption type cooling system in which the adsorption process in which the adsorption medium in the adsorber is separated by heating the other adsorber and returned to the cooling container is alternately performed in each adsorber, the cooling means and the heating means are It consists of a low-temperature air blow passage that feeds low-temperature air to the adsorber performing the adsorption stroke and a hot air blow passage that feeds high-temperature air to the adsorber performing the regeneration stroke. Install each adsorber so that the air that has passed through the adsorber that is performing the stroke flows toward the adsorber that is performing the regeneration stroke, and blow high-temperature air between each adsorber. When the heat quantity is high, the air quantity of the low temperature air blow path is increased, and when the heat quantity is low, the air quantity of the low temperature air blow path is decreased. Air flow control means Sorption cooling system which is characterized by comprising.