JPH10332218A - Adsorption rffrigerator for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly regenerate an adsorbent of a main unit when cooling operation is started right after a start of an engine a refrigerator for a vehicle having within a sealed container an auxiliary unit and the main unit provided with an adsorption/desorption part housing the adsorbent and a condensation/ evaporation part. SOLUTION: When cooling of an interior of a cabin of a vehicle is started, an auxiliary adsorption/desorption part 31 and an auxiliary condensation/ evaporation part 32 are made to communicate with each other to allow an auxiliary adsorbent (T) to adsorb refrigerant and to evaporate the refrigerant by the auxiliary condensation/evaporation part 32, and heat exchange fluid cooled by latent heat of evaporation generated by evaporation of the refrigerant is circulated to an indoor heat exchanger 4 via a fluid circulation circuit (E) to cool the interior of the cabin. The heat exchange fluid heated by heat of adsorption generated by adsorption of the refrigerant is circulated to a main adsorption/desorption part 11 via a fluid circulating path (C) to heat a main adsorbent (S) and the refrigerant is desorbed from the main adsorbent (S) for regeneration.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adsorption refrigeration system for a vehicle, which cools a vehicle interior by adsorbing and desorbing a refrigerant with an adsorbent.

[0002]

2. Description of the Related Art Conventionally, Japanese Unexamined Patent Publication No. 1-126811 discloses an adsorption-type refrigeration system for a vehicle as described above, in which an adsorption / desorption section containing an adsorbent and a refrigerant are condensed in one closed container. And a unit having a condensing and evaporating section for evaporating. In the adsorption / desorption section of this unit, the refrigerant in the condensation / evaporation section evaporates due to the adsorption of the refrigerant by the adsorbent, and the interior of the vehicle is cooled by the latent heat of evaporation. In addition, in the unit, the refrigerant is desorbed from the adsorbent by heating the adsorbing / desorbing portion with the engine cooling water to regenerate the adsorbing / desorbing portion, and the desorbed refrigerant is condensed in the condensing / evaporating portion.

[0003]

However, in the above prior art, since the adsorbent and the refrigerant are both contained in the closed container of the unit, the adsorbent is in a regenerated state immediately before the cooling operation is stopped. Also, after the cooling is stopped and before the next cooling is started, some refrigerant is adsorbed on the adsorbent. Therefore, at the start of the next cooling, it is necessary to desorb the refrigerant from the adsorbent for regeneration.

For this reason, the present inventor uses the above-mentioned unit as a main unit for performing cooling in a normal cooling state, and further includes an auxiliary unit for performing cooling at the start of cooling (that is, at the time of regeneration of the adsorbent of the main unit). Of the adsorption refrigeration system for vehicles. The auxiliary unit contains, inside one closed container, an adsorption / desorption section containing an adsorbent and a condensation / evaporation section for condensing and evaporating the refrigerant, and a communication state between the adsorption / desorption section and the condensation / evaporation section. Is provided with a valve means for intermittently switching on and off. The adsorbent is regenerated by heating the adsorption / desorption section of the auxiliary unit with engine cooling water.

However, when the present inventor studied the adsorption refrigeration system for a vehicle devised by the present inventor, he found that the cooling capacity required for the auxiliary unit became extremely large, which led to an increase in the size of the auxiliary unit. I found that there was a problem. That is, since the temperature of the engine cooling water is low immediately after the start of the engine, when the cooling is started immediately after the start of the engine, the adsorbing / desorbing portion of the main unit cannot be satisfactorily heated. Cannot be reproduced rapidly. For this reason, at the start of cooling, the time for cooling by the auxiliary unit is lengthened, and the cooling capacity required for the auxiliary unit is increased, which leads to an increase in the size of the auxiliary unit.

The present invention has been made in view of the above problems, and has a suction / desorption section for containing an adsorbent inside a closed container,
In a vehicular adsorption refrigerating apparatus including a main unit and an auxiliary unit having a condensing and evaporating unit for condensing and evaporating a refrigerant, when the cooling is started immediately after the engine is started, the adsorbent of the main unit is rapidly regenerated. With the goal.

[0007]

In order to achieve the above object, according to the first to fifth aspects of the present invention, the auxiliary adsorbent (T) of the auxiliary unit (3) is used before the start of cooling in the passenger compartment. In the regenerated state, the auxiliary adsorbing / desorbing section (31) and the auxiliary condensing / evaporating section (32) are in a non-communication state by the valve means (33). ) And the auxiliary condensing and evaporating section (32) are in communication with each other, so that the auxiliary adsorbent (T) adsorbs the refrigerant and the auxiliary condensing and evaporating section (32) evaporates the refrigerant. 32), the heat exchange fluid cooled by the latent heat of evaporation when the refrigerant evaporates is transferred to the first fluid circulation path (E).
Circulates through the indoor heat exchanger (4) to cool the passenger compartment. At the start of the cooling in the passenger compartment, the auxiliary adsorbent (T) adsorbs the refrigerant. The main adsorbent (S) is heated by circulating the heat exchange fluid heated by heat to the main adsorption / desorption section (11) through the second fluid circulation path (C). And the desorbed refrigerant is condensed in the main condensing and evaporating section (12), and when the main adsorbent (S) is regenerated after the start of cooling in the passenger compartment, the main adsorbent (S) is heated. By stopping, the refrigerant is adsorbed on the main adsorbent (S), the refrigerant is evaporated in the main condensing and evaporating section (12), and the latent heat of evaporation when the refrigerant evaporates in the main condensing and evaporating section (12). The cooled heat exchange fluid is passed through the third fluid circulation path (B) to the indoor heat exchanger ( By circulating the), it is characterized in that is adapted to cool the passenger compartment.

According to such a means, the auxiliary adsorbent (31) of the auxiliary adsorption / desorption section (31) is brought into communication with the auxiliary adsorption / desorption section (31) in the regenerating state and the auxiliary condensation / evaporation section (32). T) quickly adsorbs the refrigerant, and the heat exchange fluid heats the heat exchange fluid rapidly. By circulating this rapidly heated heat exchange fluid to the main adsorption / desorption section (11), the heat of this heat exchange fluid is used only for heating the main adsorption / desorption section (11), so the main adsorption / desorption section (11) can be rapidly heated, and the main adsorbent (S) can be rapidly regenerated.

Accordingly, the cooling time in the auxiliary unit (32) is reduced, so that the cooling capacity required for the auxiliary unit (32) can be reduced, and the auxiliary unit (3) can be cooled.
2) An increase in size can be suppressed. In the second aspect, the auxiliary adsorbent (T) is heated to heat the auxiliary adsorbent (T).
A heating means (31b) for desorbing a refrigerant from water is provided in the auxiliary adsorption / desorption section (31), and when the main adsorbent (S) is regenerated, the auxiliary adsorbent (T) is heated by the heating means (31b) to assist. The refrigerant is desorbed from the adsorbent (T), and the desorbed refrigerant is condensed in the auxiliary condensation evaporator (32). Thereby, the auxiliary adsorbent (T) can be regenerated.

[0010] In the third aspect of the present invention, the auxiliary adsorbent (T) is heated by the heating means (31b) to desorb the refrigerant from the auxiliary adsorbent (T). ), The heating by the heating means (31b) is stopped, and the auxiliary suction / desorption section (31) and the auxiliary condensation / evaporation section (32) are disconnected from each other by the valve means (33). By continuing the communication state until the start of cooling in the vehicle interior, before the start of cooling in the vehicle interior, the auxiliary adsorbent (T) is regenerated in a state where the auxiliary adsorbent (T) is regenerated.
And the auxiliary condensing and evaporating section (32) are in a non-communicating state.

Thus, at the time of starting the next cooling, the auxiliary adsorbent (T) can satisfactorily adsorb the refrigerant, so that the auxiliary cooling by the auxiliary unit (3) is performed well. Further, as in the invention according to claim 4, the auxiliary adsorbent (T) can adsorb the refrigerant at the desorption temperature when the main adsorbent (S) desorbs the refrigerant. By using such a main adsorbent (S) and an auxiliary adsorbent (T), the above-mentioned invention can be carried out well.

Further, as in the invention according to claim 5, the auxiliary adsorbent (T) is composed of one of zeolite, magnesium chloride and calcium chloride, and the main adsorbent (S) is By being composed of silica gel, the above-mentioned invention can be favorably implemented.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention. (First Embodiment) As shown in FIG. 1, an adsorption refrigeration system for a vehicle according to the present embodiment includes a first main unit 1, a second main unit 2, an auxiliary unit 3, and indoor heat distributed in a vehicle interior. The vehicle includes an exchanger 4 and an outdoor heat exchanger 5 disposed outside the vehicle compartment. The first and second main units 1 and 2 are provided with box-shaped main closed containers 10 and 20, respectively.
Is filled with a predetermined amount of refrigerant.

Above the sealed containers 10, 20, adsorption / desorption sections 11, 21 for adsorbing the refrigerant in a cooled state and desorbing the refrigerant in a heated state are provided. The adsorption / desorption sections 11 and 21 are provided with a large number of adsorbents S so as to surround the heat exchange sections 11a and 21a through which the heat exchange fluid (cooling fluid or heating fluid) flows. Closed container 10,
Below the inside of 20, there are provided condensing and evaporating units 12, 22 for condensing and evaporating the refrigerant. The condensing and evaporating sections 12, 2
2 is provided with heat exchange parts 12a and 22a through which a heat exchange fluid flows, and the heat exchange parts 12a and 22a are immersed in the liquid refrigerant L.

The auxiliary suction core 3 includes two box-shaped containers 30.
A closed container 30 having a shape in which a and 30b are communicated with each other through a communicating portion 30c is provided, and a predetermined amount of refrigerant is sealed inside the closed container 30. In addition, one box-shaped container 3
0a is disposed above the other box-shaped container 30b.
An auxiliary adsorption / desorption section 31 for adsorbing the refrigerant in a cooled state and desorbing the refrigerant in a heated state is provided inside one box-shaped container 30a. This auxiliary adsorption / desorption section 3
1 is a heat exchange unit 31 through which a heat exchange fluid (heating fluid) flows.
a and a number of adsorbents T are arranged so as to surround the electric heater 31b. The electric heater 3
1b uses a vehicle-mounted battery 91 as a power source, and is provided with a switch 92 for intermittently supplying power from the battery 91 to the electric heater 31b.

Further, inside the other box-shaped container 30b,
An auxiliary condensation / evaporation unit 32 for condensing and evaporating the refrigerant is provided. The auxiliary condensation / evaporation unit 32 includes a heat exchange unit 32a through which a heat exchange fluid flows. The heat exchange unit 32a is immersed in the liquid refrigerant L. The communication portion 30c has an electromagnetic valve 33 that opens and closes the communication portion 30c (that is, switches the communication state between the auxiliary suction / desorption portion 31 and the auxiliary condensation / evaporation portion 32).
Is provided.

As is well known, the adsorbents S and T adsorb the gas refrigerant with a high capacity by being cooled, and the adsorption capacity gradually decreases with the adsorption of the gas refrigerant. It has the property that the adsorbed gas refrigerant is desorbed to regenerate the adsorption capacity. That is, by circulating the cooling fluid through the heat exchange units 11a, 21a and 31a of the adsorbers 1, 2, and 3, the adsorbents S and T adsorb the gas refrigerant, and the heating fluid is supplied to the heat exchange units 11a, 21a and 31a. Is circulated, the adsorbents S and T desorb the gas refrigerant.

At the desorption temperature (for example, about 70 ° C. to 90 ° C.) at which the main adsorbent S desorbs the refrigerant, the main adsorbent S is set so that the auxiliary adsorbent T can adsorb the refrigerant.
Is composed of silica gel, and the auxiliary adsorbent T is composed of zeolite. Examples of the refrigerant include water and an aqueous alcohol solution. In the cooling steady state, the first normal operation in which the refrigerant is adsorbed by the main adsorbing / desorbing section 11 of the first main unit 1 and the refrigerant is desorbed by the main adsorbing / desorbing section 21 of the second main unit 2; Main adsorption / desorption section 1 of main unit 1
1, the refrigerant is desorbed and desorbed in the main suction / desorption section 2 of the second main unit 2.
1 and the second normal operation for adsorbing the refrigerant at a predetermined time t
(For example, every 60 seconds).

Before the predetermined time t elapses, the adsorbent S desorbs and regenerates the refrigerant, and the predetermined time t
Is passed, the heat exchange units 11a and 11a of the adsorption cores 1 and 2 are set so that the adsorbent S is in a state where the refrigerant can be further adsorbed.
The flow rate of the heat exchange fluid circulated through a is made larger at the time of desorption than at the time of adsorption. The indoor heat exchanger 4 and the outdoor heat exchanger 5 include a heat exchange unit (not shown) through which a heat exchange fluid circulates. These heat exchange units and the above-described heat exchange units 11a, 21a, 31a, 12
a, 22a and 32a exchange heat between the heat exchange fluid flowing inside and the surrounding air.

The heat exchange sections 11a and 21a of the main adsorption and desorption sections 11 and 21 are connected to the outdoor heat exchanger 5 and an engine (not shown) via four-way valves 71 and 72 by piping. . The heat exchange sections 12a and 22a of the main condensation and evaporation sections 12 and 22 are connected to the indoor heat exchanger 4 and the outdoor heat exchanger 5 via four-way valves 73 and 74 by piping.

The symbol A in FIG. 1 indicates the heat exchange unit 11 of the first and second main adsorption / desorption units 11 and 21 from the outdoor heat exchanger 5.
a, 21a or the first and second main condensing and evaporating sections 12, 2
The fluid circulation path is a fluid circulation path extending to the second heat exchange sections 12a and 22a. A circulation pump 61 for pumping and circulating the heat exchange fluid to the fluid circulation path A is disposed in the fluid circulation path A. In addition, reference symbol B in FIG.
2 is a fluid circulation path extending from the heat exchange sections 12a and 22a to the indoor heat exchanger 4, and an electromagnetic valve 84 for interrupting the fluid flow in the fluid circulation path B and a circulation pump 62 are disposed in the fluid circulation path B. Have been.

The heat exchange section 31a of the auxiliary adsorption / desorption section 31
And the heat exchange section 11a of the first main adsorption / desorption section 11 are connected by a pipe. 1 is a fluid circulation path from the heat exchange section 31a of the auxiliary adsorption / desorption section 31 to the heat exchange section 11a of the first main adsorption / desorption section 11, and the fluid flow of the fluid circulation path C is shown in FIG. The intermittent electromagnetic valve 81 and the circulation pump 63 are arranged in the middle of the fluid circulation path C. 1 is a fluid flow path between the heat exchange part 11a of the first main adsorption / desorption part 11 and the four-way valve 72, and an electromagnetic valve 82 that interrupts the fluid flow in the fluid flow path D is It is arranged in the middle of the fluid circulation path D.

The heat exchange section 3 of the auxiliary condensation / evaporation section 32
2a and the indoor heat exchanger 4 are connected by piping. 1 is a fluid circulation path from the heat exchange section 32a of the auxiliary condensation / evaporation section 32 to the indoor heat exchanger 4, and an electromagnetic valve 83 for interrupting the fluid flow in the fluid circulation path E; The circulation pump 62 described above is arranged in the middle of the fluid circulation path E.

Further, the heat exchange section 3 of the auxiliary condensation / evaporation section 32
2a and the outdoor heat exchanger 5 are connected by piping. 1 is a fluid circulation path from the heat exchange section 32a of the auxiliary condensation / evaporation section 32 to the outdoor heat exchanger 5, and an electromagnetic valve 85 for interrupting the fluid flow in the fluid circulation path F; The circulation pump 61 described above is arranged in the middle of the fluid circulation path F.

Next, the operation of the present embodiment will be described. FIG.
Indicates a state immediately after starting the engine and immediately after starting the cooling (that is, at the time of cooling down). In addition,
Of the solenoid valves 81, 82, 83, 84, the black ones are in the closed state, and the white ones are in the open state. First, the communication part 30c is opened by the electromagnetic valve 33, and the auxiliary adsorption / desorption part 31 and the auxiliary condensation / evaporation part 32 are connected to each other,
The adsorbent T of the auxiliary adsorption / desorption section 31 adsorbs the refrigerant vapor, and the liquid refrigerant L evaporates in the auxiliary condensation / evaporation section 32.

Then, the heat exchange fluid in the heat exchange section 31a of the auxiliary adsorption / desorption section 31 is rapidly heated by the heat of adsorption due to the adsorption of the refrigerant, and the heated heat exchange fluid passes through the fluid circulation path C. Then, the heat is circulated through the heat exchange section 11a of the first main adsorption / desorption section 11, and the adsorbent S of the heat exchange section 11a is heated. Then, the adsorbent S desorbs the refrigerant by being heated,
Head for regeneration.

At this time, the solenoid valve 81 opens and the solenoid valve 82
Is closed, the heat exchange section 31a of the auxiliary adsorption / desorption section 31
The heat exchange fluid heated in is circulated only to the heat exchange section 11a of the first main adsorption / desorption section 11. Therefore, the first main adsorption / desorption section 11 can be rapidly heated, and this main adsorbent S
Can be rapidly reproduced. The heat exchange fluid flowing through the heat exchange section 31a of the auxiliary adsorption / desorption section 31 is generated by the adsorbent S due to the heat of adsorption caused by the adsorbent T adsorbing the refrigerant.
The filling amount of the adsorbent T is set so that the adsorbent T is heated to a temperature (for example, 90 ° C.) at which it can be desorbed.

The refrigerant vapor desorbed from the adsorbent S is condensed in the heat exchange section 12a of the first main condensation / evaporation section 12 and returns to the liquid refrigerant L. At this time, the heat of condensation due to the condensation of the refrigerant vapor is released to the heat exchange fluid in the heat exchange unit 12a,
The heat exchange fluid heated by the heat is supplied to the fluid circulation path A
And circulates through the outdoor heat exchanger 5, and radiates heat to the outside in the outdoor heat exchanger 5.

Further, due to the latent heat of evaporation caused by the evaporation of the refrigerant,
The heat exchange fluid in the heat exchange section 32a of the auxiliary condensation / evaporation section 32 is cooled, and the cooled heat exchange fluid is supplied to the fluid circulation path E
Circulates through the indoor heat exchanger 4 to cool the air near the indoor heat exchanger 4. Thereby, cooling of the vehicle interior is performed. At this time, the solenoid valve 83 opens and the solenoid valves 84, 8
5, the heat exchange section 3 of the auxiliary condensation / evaporation section 32
The heat exchange fluid cooled in 2a circulates only to the indoor heat exchanger 4. Therefore, the room can be rapidly cooled.

The heat exchange section 21 of the second main adsorption / desorption section 21
Although the engine cooling water is circulating in a, it takes a long time to regenerate the adsorbent S in the second main adsorption / desorption section 21 immediately after the engine is started, since the engine cooling water is relatively low in temperature. By performing the above-mentioned cool-down operation for a predetermined time (several minutes), the adsorbing capacity of the adsorbent T of the auxiliary adsorbing / desorbing section 31 is reduced, and the adsorbent S of the first main adsorbing / desorbing section 11 is regenerated. At this time, the first main adsorption / desorption section 11
Is switched so that the above-described first normal operation in which the second main adsorption / desorption section 21 is on the adsorption side and the regeneration operation of the auxiliary adsorption / desorption section 31 are simultaneously performed. The state at this time is shown in FIG.

As the first normal operation, the first main adsorption / desorption section 11
The heat exchange fluid circulates through the fluid circulation path A between the heat exchange section 11a and the outdoor heat exchanger 5 as a result.
The adsorbent T of the main adsorption / desorption section 11 adsorbs the refrigerant vapor, and the liquid refrigerant L of the first main condensation / evaporation section 12 evaporates. The heat exchange section 12 cooled by the latent heat of vaporization due to the evaporation of the refrigerant.
The heat exchange fluid in a circulates through the indoor heat exchanger 4 via the fluid circulation path B, and cools the air near the indoor heat exchanger 4. Thereby, cooling of the vehicle interior is performed.

In the first normal operation, the heat exchange section 21a of the second main adsorption / desorption section 21 is heated by the high-temperature engine cooling water, and the heat is removed from the adsorbent S of the second main adsorption / desorption section 21. By adsorbing the refrigerant satisfactorily, the adsorbent S is regenerated. The refrigerant vapor desorbed from the adsorbent S is condensed in the second main condensing and evaporating section 22. The heat of condensation is radiated outside through the fluid circulation path A in the outdoor heat exchanger 5.

When the switch 92 is turned on as a regeneration operation of the auxiliary adsorption / desorption section 31, the electric heater 31b generates heat and heats the adsorbent T of the auxiliary adsorption / desorption section 31 (for example, about 200 ° C.). . Thereby, the refrigerant is desorbed from the adsorbent T, and the adsorbent T is regenerated. The refrigerant vapor desorbed from the adsorbent T is condensed in the auxiliary condensation evaporator 32. This heat of condensation is radiated to the outside through the fluid circulation path F in the outdoor heat exchanger 5.

When the first normal operation is performed for the predetermined time t, the first main adsorption / desorption section 11 is on the adsorption side and the second main adsorption / desorption section 21 is on the desorption side instead of the first normal operation. The mode is switched to the second normal operation described above (the regeneration operation of the auxiliary adsorption / desorption unit 31 is continued). The state at this time is shown in FIG. In this second normal operation, the first and second main units 1
Since the adsorption / desorption state and the condensation / evaporation state in 1 and 12 are merely replaced with those in the first normal operation, the description is omitted. In this way, by switching between the first normal operation and the second normal operation at predetermined time intervals t, cooling in the vehicle compartment is continuously performed.

When it is determined that the regeneration of the adsorbent T in the auxiliary adsorption / desorption section 31 has been completed while switching between the first and second normal operations, the regeneration operation is stopped. The state at this time is shown in FIG. The completion of reproduction is determined as follows. That is, the inlet temperature and the outlet temperature of the heat exchange section 31a of the auxiliary adsorption / desorption section 31 (the heat exchange section 31a
(Detection means) 101 and 102 detect the temperature of the fluid pipes constituting the inlet and outlet of the fluid, and when the temperature difference becomes a small temperature (for example, 0.2 ° C.) or less, the regeneration is completed. Judge.

After the regeneration of the adsorbent T is completed, the switch 92 is turned off and the auxiliary adsorption / desorption section 3 is turned off, as shown in FIG.
1 is stopped, and the auxiliary adsorption / desorption section 31 and the auxiliary condensation / evaporation section 32 are put into a non-communication state.
1 is maintained until the next cooling start. Further, the circulation of the heat exchange fluid in the heat exchange section 32 a of the auxiliary condensation and evaporation section 32 is stopped by the solenoid valve 85.

According to the present embodiment, when the cooling is started immediately after the engine is started, the auxiliary adsorbing / desorbing section 31 and the auxiliary condensing / evaporating section 32 in the regenerating state are brought into communication with each other. The 31 auxiliary adsorbents T quickly adsorb the refrigerant, and the heat of adsorption at this time rapidly heats the heat exchange fluid. This rapidly heated heat exchange fluid
By circulating through the main adsorption / desorption section 11, the heat of the heat exchange fluid is used only for heating the main adsorption / desorption section 11, so that the main adsorption / desorption section 11 can be rapidly heated, and the regeneration of the main adsorbent S can be rapidly performed. Can be performed.

Therefore, the cooling time in the auxiliary unit 32 is reduced, so that the cooling capacity required for the auxiliary unit 32 can be reduced, and the size of the auxiliary unit 32 can be suppressed. In addition, during the cooling steady state (that is, during the normal operation after the cooling down), the auxiliary adsorbent T is heated by the electric heater 31b to regenerate the auxiliary adsorbent T, and then the auxiliary adsorbent / desorbing unit 31 and the auxiliary condensing unit 31 Since the regenerating state of the auxiliary adsorbing / desorbing section 31 is maintained until the next cooling start, the auxiliary adsorbent T can satisfactorily adsorb the refrigerant at the next cooling start because the evaporating section 32 is in a non-communication state. The auxiliary cooling by the auxiliary unit 3 is favorably performed.

(Second Embodiment) In the present embodiment, the fluid circulation path F and the solenoid valve 85 in the first embodiment are eliminated. FIG. 5 corresponds to FIG. 2 in the first embodiment (the first normal operation and the regeneration operation of the auxiliary adsorption / desorption unit 31 are performed simultaneously).
As shown in the figure, at the time of desorption of the auxiliary adsorption / desorption section 31, a relatively low temperature (for example, 30 ° C.) heat exchange fluid after passing through the indoor heat exchanger 4 is circulated through the auxiliary condensation / evaporation section 32. Also in this case, the heat of condensation generated in the auxiliary condensation and evaporation section 32 can be taken. In addition, since the fluid circulation path F and the solenoid valve 85 in the first embodiment can be eliminated,
The number of parts is reduced and the cost is low.

During the regeneration operation of the auxiliary adsorption / desorption section 31, the solenoid valve 83 is opened halfway and the solenoid valve 84 is fully opened, so that the fluid circulation path A (that is, the indoor heat exchanger 4 and the main The circulation amount of the heat exchange fluid in the circulation path between the heat exchange unit 12a and the heat exchange unit 12a is suppressed from being significantly reduced. This is because when the circulation amount of the heat exchange fluid in the fluid circulation path A is greatly reduced, the heat exchange fluid
This is because the heat exchange portion 12a is not cooled well.

(Other Embodiments) In both the above embodiments, the adsorbent T of the auxiliary adsorption / desorption section 31 is heated by the heat of the electric heater 31b. However, the heat of the exhaust gas and the heat of the combustion heater are used. Etc. may be used. Further, in the above embodiments, two main units 1 and 2 are provided, but three or more main units may be provided.

As the adsorbent T in the auxiliary adsorption / desorption section 31, zeolite as a physical adsorbent was used.
₂ or a chemical adsorbent such as CaCl ₂ may be used.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an adsorption refrigeration apparatus for a vehicle at the start of cooling according to a first embodiment of the present invention.

FIG. 2 shows a first normal operation (first operation) according to the first embodiment;
FIG. 3 is a configuration diagram illustrating the adsorption refrigeration system for a vehicle when a regeneration operation of a main adsorption / desorption unit is performed on a suction side, a second main adsorption / desorption unit is mounted on a desorption side, and an auxiliary adsorption / desorption unit is simultaneously performed.

FIG. 3 is a diagram showing a second normal operation (first operation) according to the first embodiment;
FIG. 4 is a configuration diagram showing the adsorption refrigeration system for a vehicle when the regeneration operation of the main adsorption / desorption section is on the desorption side, the second main adsorption / desorption section is on the adsorption side, and the auxiliary adsorption / desorption section are simultaneously performed.

FIG. 4 is a configuration diagram illustrating the adsorption refrigeration system for a vehicle when the first normal operation is performed when the regeneration operation of the auxiliary adsorption / desorption unit is stopped according to the first embodiment.

FIG. 5 is a diagram related to the second embodiment and corresponding to FIG. 2;

[Description of Signs] 1 ... Main unit, 10 ... Main hermetic container, 11 ... Main adsorption / desorption section, S ... Main adsorbent, 12 ... Main condensing and evaporating section, 3 ... Auxiliary unit, 30 ... Auxiliary closed container, 31 ... Auxiliary Adsorption / desorption section, T ...
Auxiliary adsorbent, 32: auxiliary condensing and evaporating section 3), 33: solenoid valve (valve means), 4: indoor heat exchanger, B: fluid circulation path (third
Fluid circulation path), C ... fluid circulation path (second fluid circulation path), E
... a fluid circulation path (first fluid circulation path).

Claims (5)

[Claims] 1. A main adsorbent (S) including a main adsorbent (S) for adsorbing a refrigerant by being cooled and desorbing the refrigerant by being heated to regenerate an adsorbing ability above the main closed container (10). A main unit (1) having a desorption section (11) and a main condensation / evaporation section (12) capable of condensing and evaporating a refrigerant below the main hermetic vessel (10); and an auxiliary hermetic vessel (30). A supplementary adsorption / desorption section (31) including an auxiliary adsorbent (T) that adsorbs the refrigerant by being cooled and desorbs the refrigerant by being heated to regenerate the adsorbing ability is provided above the auxiliary sealing. Below the container (30)
An auxiliary unit (3) provided with an auxiliary condensation / evaporation unit (32) capable of condensing and evaporating a refrigerant; and in the auxiliary airtight container (30), the auxiliary suction / desorption unit (31) and the auxiliary condensation / evaporation unit (32). ), An indoor heat exchanger (4) disposed in the passenger compartment, the auxiliary condensation / evaporation unit (32), and the indoor heat exchanger (4).
A first fluid circulation path (E) for circulating a heat exchange fluid between
A second fluid circulation path (C) for circulating a heat exchange fluid between the main adsorption / desorption section (11) and the auxiliary adsorption / desorption section (31).
And a third fluid circulation path (B) for circulating a heat exchange fluid between the main condensing / evaporating section (12) and the indoor heat exchanger (4). The auxiliary adsorbent (T)
The auxiliary suction / desorption section (31) and the auxiliary condensation / evaporation section (32) are in a non-communication state by the valve means (33) in a state where the air is regenerated. By making the adsorbing / desorbing section (31) and the auxiliary condensing / evaporating section (32) communicate with each other by the valve means (33), the auxiliary adsorbent (T) adsorbs the refrigerant and the auxiliary condensing / evaporating section. Part (32)
The heat exchange fluid cooled by the latent heat of evaporation when the refrigerant evaporates in the auxiliary condensation evaporator (32) is passed through the first fluid circulation path (E) to the indoor heat exchanger ( 4) to cool the vehicle interior, and at the start of cooling in the vehicle interior, the auxiliary adsorbent (T) is heated by the heat of adsorption when the refrigerant is adsorbed. By circulating the heat exchange fluid through the second fluid circulation path (C) to the main adsorbing / desorbing section (11), the main adsorbent (S) is heated and the refrigerant is removed from the main adsorbent (S). Of the main condensing and evaporating section (1).
When the main adsorbent (S) is regenerated after the start of cooling in the vehicle cabin, the heating of the main adsorbent (S) is stopped, thereby condensing the main adsorbent (S). The refrigerant is adsorbed by the main adsorbent (S), the refrigerant is evaporated by the main condensing and evaporating section (12), and the main condensing and evaporating section (12) is cooled by the latent heat of evaporation when the refrigerant evaporates. A vehicle interior is cooled by circulating a heat exchange fluid through the third fluid circulation path (B) to the indoor heat exchanger (4). apparatus. 2. A heating means (31b) for heating the auxiliary adsorbent (T) to desorb a refrigerant from the auxiliary adsorbent (T) is provided in the auxiliary adsorbing / desorbing section (31). When the main adsorbent (S) is regenerated, the heating means (3
In 1b), the auxiliary adsorbent (T) is heated to desorb a refrigerant from the auxiliary adsorbent (T), and the desorbed refrigerant is condensed in the auxiliary condensing and evaporating section (32). An adsorption refrigeration system for a vehicle according to claim 1. 3. When the auxiliary adsorbent (T) is regenerated by heating the auxiliary adsorbent (T) by the heating means (31b) to desorb a refrigerant from the auxiliary adsorbent (T). The heating by the heating means (31b) is stopped, and the auxiliary suction / desorption section (31) and the auxiliary condensation / evaporation section (32) are disconnected from each other by the valve means (33). By continuing the state before the start of cooling in the vehicle interior, before the start of cooling in the vehicle interior, the auxiliary adsorbent (T) and the auxiliary condensing unit (31) are regenerated while the auxiliary adsorbent (T) is regenerated. 3. The adsorption refrigeration system for a vehicle according to claim 2, wherein the evaporator (32) is in a non-communication state. 4. The method according to claim 1, wherein the auxiliary adsorbent (T) is capable of adsorbing the refrigerant at a desorption temperature at which the main adsorbent (S) desorbs the refrigerant. The adsorption refrigeration system for a vehicle according to one of the above aspects. 5. The auxiliary adsorbent (T) comprises a zeolite,
The adsorption refrigeration system for a vehicle according to any one of claims 1 to 4, comprising one of magnesium chloride and calcium chloride, wherein the main adsorbent (S) is made of silica gel. apparatus.