JPH09178288A - Absorption type air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively prevent an absorption liquid from being crystallized on a solenoid valve for heating operation or on a solenoid valve for a refrigerant by providing circulating flow passages for a heated absorption liquid between a plunger, which is energized by an electromagnetic force of an electromagnetic solenoid to be actuated, and an inner peripheral wall of a cylindrical body containing the plunger. SOLUTION: A plunger 7 to which power is supplied during heating operation has a spherical valve body 66 attracted by an electromagnetic force to be set at an upper position and to open a valve port 64. An absorption liquid heated by a high-temperature regenerator 1 flows from an upstream side pipe 61 to a downstream side pipe 62. Since a notch 72 and an axial groove 73 are opened with a large gaps, a liquid film is not formed, and a circulating stream of the heated absorption liquid is caused in circulating flow passages of the notch 72 - a shaft hole 71 and a gap 69 - the axial groove 73. A U-turn stream which occurs in the gap 69 causes a guide stream even in a narrow gap between the plunger 7 and an inner peripheral wall of a cylindrical body T to prevent the absorption liquid from staying between the plunger 7 and the inner peripheral wall, thereby producing no crystallization.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorption type air conditioner using an absorption type refrigeration system which uses an aqueous solution such as lithium bromide as an absorption liquid.

[0002]

2. Description of the Related Art In an absorption type air conditioner, during cooling operation, a regenerator heats with a heat source such as a burner to boil a low concentration absorbent and separate it into a high concentration absorbent and a refrigerant. This refrigerant is condensed in a condenser for promoting liquefaction to generate a refrigerant liquid. In the evaporator, the refrigerant liquid is sprayed on the surface of the evaporation coil through which the cold / hot water as the air-conditioning heat medium flows so as to evaporate and cool the cold / hot water.

In the evaporator, a refrigerant cooler for self-cooling the refrigerant liquid supplied from the condenser above the evaporation coil and a refrigerant liquid flowing down from the refrigerant cooler are evenly dropped to the upper end of the evaporation coil. A refrigerant liquid spreader is provided. The condenser and the refrigerant cooler are a steady refrigerant liquid flow path in which the refrigerant liquid flows down from the condenser during steady operation, and a temporary refrigerant liquid with a refrigerant solenoid valve in which the refrigerant liquid flows down temporarily from the condenser at the time of starting, etc. It is in communication with the flow path. The refrigerant solenoid valve keeps the valve body open when the electromagnetic solenoid is energized,
The valve closes when power is turned off.

The refrigerant evaporated in the evaporator disperses and absorbs the high-concentration absorbing liquid on the surface of the cooling coil in which the cooling water for exhaust heat flows in the absorber. At this time, since absorption heat is generated, cooling water for exhaust heat is circulated through the cooling tower to exhaust heat. The absorption liquid that has absorbed the refrigerant and has been reduced in concentration is returned to the regenerator by the absorption liquid pump provided in the low-concentration absorption liquid flow path that connects the bottom of the absorber and the regenerator.

During the heating operation, the absorbing liquid is heated in the regenerator, the absorbing liquid pump is operated, and the heated absorbing liquid is supplied to the evaporator through the heating absorbing liquid flow passage with the heating solenoid valve. The heat absorbing liquid heats cold / hot water as a heat medium for air conditioning flowing in the evaporator coil in the evaporator. The heated cold / hot water is circulated to the indoor unit and used for air conditioning of indoor air. The absorption liquid flows into the absorber from the evaporator after heating the cold / hot water, and is circulated to the regenerator by the absorption liquid pump through the low-concentration absorption liquid flow path.

[0006]

In this absorption type air conditioner, for example, the heating solenoid valve has a valve element attached to the plunger that is biased by an electromagnetic force generated by energizing the electromagnetic solenoid during heating operation. Keep the valve open,
During cooling operation other than heating operation and during operation stop, energization is stopped and the valve is closed. The electromagnetic valve for heating has a configuration in which a plunger is accommodated with a clearance inside the cylinder and an electromagnetic solenoid is arranged on the outer peripheral side of the cylinder.

Since this clearance communicates with the heating absorbing liquid flow path, the absorbing liquid always exists. During heating operation, even if the absorbent circulates in the heating absorbent channel,
A liquid film due to surface tension is formed at the inlet of the annular clearance to prevent the absorbing liquid from entering the clearance. For this reason, there is a problem that the concentration of the absorbing liquid in the clearance is increased due to the heat generated by the electromagnetic solenoid, and the crystallization is caused and the plunger is fixed to the inner peripheral wall of the cylinder whose one end is closed, resulting in malfunction. Since some solvent such as lithium bromide is also dissolved in the refrigerant liquid, the same problem may occur in the refrigerant solenoid valve. An object of the present invention is to provide an absorption air conditioner capable of effectively preventing crystallization of an absorbing liquid in a heating solenoid valve or a refrigerant solenoid valve.

[0008]

According to the present invention, during cooling operation, a low-concentration absorbent is heated in a regenerator to be separated into a high-concentration absorbent and a refrigerant, and in an evaporator, the liquefied refrigerant is a refrigerant. Liquid is evaporated to cool cold / hot water as a heating medium for air conditioning, and in the absorber, the evaporated refrigerant is absorbed by the high-concentration absorbent, and the refrigerant is absorbed to reduce the low-concentration absorbent to a low concentration. It is returned to the regenerator by the absorption liquid pump provided in the absorption liquid flow path, and during the heating operation, the absorption liquid is heated in the regenerator and the absorption liquid pump is operated to heat the absorption liquid with a solenoid valve for heating. In an absorption type air conditioner that supplies the evaporator via a heating absorbing liquid flow path to heat the cold / hot water and circulates the water to the regenerator, the heating solenoid valve is provided in the heating absorbing liquid flow path. Is placed in a cylinder with one end blocked. Together with the plunger that is slidably accommodated with a clearance provided between it and the inner peripheral wall of the cylindrical body, and is arranged on the outer periphery of the cylindrical body that is outside the heating absorbing liquid flow path, and by an electromagnetic force. An electromagnetic solenoid for urging and actuating the plunger is provided, and a circulation passage for the refrigerant liquid is provided between the plunger and the inner peripheral wall of the cylindrical body accommodating the plunger.

According to another aspect of the invention, in the absorption type air conditioner, a condenser, a refrigerant cooler to which the refrigerant liquid is supplied from the condenser through a refrigerant liquid passage having a solenoid valve for refrigerant, and The refrigerant cooler is provided with an evaporation coil in which the refrigerant liquid is sprayed on the surface and the cold / hot water flows inside, and the solenoid valve for the refrigerant is disposed in a cylinder body having one end closed in the refrigerant liquid flow path. In addition, a plunger that is slidably accommodated with a clearance provided between the inner peripheral wall of the cylindrical body and the inner peripheral wall of the cylindrical body is arranged on the outer periphery of the cylindrical body outside the refrigerant liquid flow path, and the An electromagnetic solenoid for urging and actuating the plunger is provided, and a circulation passage for the refrigerant liquid is provided between the plunger and the inner peripheral wall of the cylindrical body accommodating the plunger.

In the structure according to the third aspect, the heating absorbing liquid flow passage intersects with the upstream flow passage communicating with the regenerator and has one end closed and the other end closed. It has a T-shaped flow path including a downstream flow path communicating with the evaporator, and the tubular body is provided at one end of the downstream flow path.

According to a fourth aspect of the present invention, the refrigerant liquid flow path intersects with the upstream flow path communicating with the condenser, the upstream flow path is crossed, and one end is closed and the other end is the refrigerant. It has a T-shaped flow path including a downstream flow path communicating with a cooler, and the tubular body is provided at one end of the downstream flow path.

According to a fifth aspect of the present invention, the plunger has a valve body that opens and closes a valve opening in conjunction with the plunger, and the circulation passage has an axial hole provided at the center of the plunger and the plunger. It is characterized by comprising a gap between the axial groove or the axial plane formed on the outer peripheral wall of the above and the inner peripheral wall of the cylindrical body. In the structure according to claim 6, the plunger has a valve body that works together with the plunger to open and close a valve opening, and the circulation flow path has a plurality of axial grooves formed on an outer peripheral surface of the plunger. It is characterized by comprising a gap between the axial plane and the inner peripheral wall of the cylindrical body.

[0013]

In this absorption type cooling device, when the electromagnetic solenoid is energized, the absorbing liquid or the refrigerant liquid can flow into the clearance between the surface of the plunger and the inner peripheral wall of the cylindrical body, The absorption liquid or refrigerant liquid accumulated in the clearance, which is a narrow gap, is heated by the heat generated by the electromagnetic solenoid to a high concentration, and the solvent such as lithium bromide crystallizes and the problem of sticking the plunger to the inner peripheral wall of the cylinder is effective. Can be prevented.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 shows an absorption air conditioner, which comprises an absorption refrigeration system (outdoor unit) 100, an indoor unit 200, and a controller 300. The outdoor unit 100 includes a refrigerator main body A and a cooling tower (cooling tower) CT arranged side by side in a flat box-shaped casing K. The refrigerator body A is
As the regenerator C, a low temperature regenerator 2 is provided above the high temperature regenerator 1, and a gas burner B as a heat source is disposed below the high temperature regenerator 1. An absorber 3 and an evaporator 4 are provided on the outer periphery of the low temperature regenerator 2, and a condenser 5 is installed above the evaporator 4.

The high temperature regenerator 1 is heated by a gas burner B to boil the low-concentration absorption liquid inside the heating tank 1.
1 and a medium-concentration absorbent separation column 12 that extends upward from the top of the heating tank 11 and separates the refrigerant vapor and the medium-concentration absorbent that has been concentrated by evaporation of the refrigerant vapor. A vertical cylindrical airtight refrigerant recovery tank 10 for recovering the refrigerant vapor is provided on the outer periphery of the medium-concentration absorbent separation column 12.

The low-temperature regenerator 2 is a vertical cylindrical low-temperature regenerator case 2 installed eccentrically on the outer periphery of the refrigerant recovery tank 10.
Has zero. The low temperature regenerator case 20 is provided with a refrigerant vapor outlet 21 on the ceiling and has a top portion connected to the bottom portion 121 of the medium concentration absorbent separation column 12 by the medium concentration absorbent flow path L1. Inside the low temperature regenerator case 20, a medium-concentration absorption liquid is supplied from the bottom portion 121 via the heat exchanger H due to a pressure difference, re-boiling using the outer wall of the refrigerant recovery tank 10 as a heat source, and refrigerant vapor and high-concentration absorption liquid. And separated.

A vertical cylindrical, airtight evaporation / absorption case 30 is concentrically arranged on the outer periphery of the low-temperature regenerator case 20, and a condenser case 50 is provided above the evaporation / absorption case 30.
Are arranged. The refrigerant recovery tank 10, the low temperature regenerator case 20, and the evaporation / absorption case 30 are integrally welded to the stepped disc-shaped bottom plate 13 to form an airtight container. The upper part of the low temperature regenerator case 20 has a gas-liquid separating section 22.
And communicates with the inside of the condenser case 50 through the refrigerant vapor outlet 21 and the gap 5A.

In the absorber 3, a cooling coil 31 wound in a vertical cylindrical shape is arranged in an inner portion of the evaporation / absorption case 30, and a high-concentration absorbent is sprayed above the cooling coil 31. The high-concentration absorbent sprayer 32 is attached. The absorber 3 is used during the cooling operation, and the exhaust heat cooling water cooled by the cooling tower CT circulates in the cooling coil 31.

High-concentration absorbent receiving part 23 of low-temperature regenerator 2
Is the high-concentration absorbent liquid flow path L2 via the heat exchanger H,
It is connected to the high-concentration absorbent sprayer 32. In the high-concentration absorbent sprayer 32, the high-concentration absorbent flows in due to the pressure difference, and the high-concentration absorbent that has flowed in is sprayed onto the upper end of the cooling coil 31 and adheres to the surface of the cooling coil 31 to form a film. , It flows downward due to the action of gravity. The bottom portion 33 of the absorber 3 and the bottom portion of the heating tank 11 are connected by a heat exchanger H and a low-concentration absorbent flow path L3 equipped with an absorbent pump P1.

In the evaporator 4, a vertical cylindrical partition wall 40 with a communication port is provided on the outer circumference of the cooling coil 31 in the evaporation / absorption case 30, and the interior of the partition wall 40 is cooled for heating and cooling. It has a configuration in which a vertical cylindrical evaporation coil 41 through which water flows is arranged. A refrigerant liquid spraying tool 42 is installed above the evaporation coil 41, and a refrigerant cooler 43 is mounted above the refrigerant liquid spraying tool 42. Bottom 4A of evaporator 4
Is in communication with the bottom portion 121 of the medium-concentration absorbent separation column 12 via the heating absorbent flow path L4 having the heating solenoid valve 6.

As shown in FIGS. 1 and 2, the heating solenoid valve 6 is formed by using a T-shaped flow passage 60 provided in the heating absorbing liquid flow passage L4. The T-shaped flow path 60 is made of stainless steel and is the bottom portion 121 of the medium-concentration absorbent separation column 12 of the high temperature regenerator.
Upstream pipe 6 which is connected to and arranged horizontally
1 and a downstream pipe 62 made of stainless steel, which intersects with the upstream pipe 61 in a T shape and is arranged in the vertical direction, and the lower part of which is connected to the bottom portion 4A of the evaporator 4.

A throttling cylinder 65 forming a valve opening 64 is fitted in a lower side portion 62A which is a downstream side pipe 62 below the intersecting portion, and a spherical valve body formed of a ball bearing is provided above the valve opening 64. 66 are provided. In addition, a cylindrical body T, in which a core 67 is fitted and closed at an upper end thereof, is formed on an upper side portion 62B, which is an upper side of the intersecting portion, and a threaded portion 68 is projectingly provided on an upper surface of the core 67.

In the cylindrical body T below the core 67, a plunger 7 integrally attached to the spherical valve body 66 by welding, caulking or the like has a minute clearance (about 0.2 mm).
And a gap 69 is provided between the core 67 and the plunger 7, and the plunger 7 and the spherical valve element 66 are urged in the direction toward the valve opening 64 in the gap 69 to open the valve opening 64. A spring S for closing the valve is provided.

As shown in FIGS. 1A and 1B, the plunger 7 is made of a magnetic material such as soft iron and has a cylindrical shape with a shaft hole 71. The plunger 7 is connected to the spherical valve element 66 at a lower end surface thereof in a radial direction. A notch 72 (2 mm × 2 mm) is provided. An axial groove 73 is formed on the outer peripheral surface of the plunger 7, and a circulation flow path 70 is formed from the notch 72 to the axial hole 71 to the gap 69 to the axial groove 73.

An electromagnetic solenoid 8 is provided on the outer peripheral side of the tubular body T. The electromagnetic solenoid 8 is formed by winding an electromagnetic coil 82 around a bobbin 81 fitted on the tubular body T.
It is held by a U-shaped mounting bracket 83 composed of an upper fitting plate and an outer fitting plate having outer fitting holes fitted on the tubular body T and a connecting portion of both the fitting plates. The mounting bracket 83 is a nut 84 screwed into the threaded portion 68.
Is fastened to the core 67 fitted in the tubular body T.

The electromagnetic solenoid 8 is energized during the heating operation, the plunger 7 is attracted by the electromagnetic force, and the spherical valve element 66 is set at a higher position as shown in FIG.
The valve opening 64 is open. The heat absorbing liquid heated in the high temperature regenerator 1 flows from the upstream pipe 61 to the downstream pipe 62 as shown by the solid arrow in FIG.

As for the infiltration of the absorbing liquid into the cylindrical body T, since the notch 72 and the axial groove 73 are opened with a large gap, a liquid film due to the surface tension of the absorbing liquid does not occur. It is possible to enter the tubular body T, and as shown by the broken line arrow in FIG. 1, the notch 72 → the shaft hole 71 → the gap 69 →
A circulation flow of the heated absorption liquid is generated in the circulation flow passage 70 of the axial groove 73. The flow direction may be opposite.

This circulating flow mainly occurs in the circulating flow passage 70, but the U-turning flow in the gap 69 is the axial groove 73.
Other than the above, an induced flow is generated even in a clearance, which is a narrow gap between the plunger 7 and the inner peripheral wall of the cylinder T, and the absorption liquid is prevented from staying between the plunger 7 and the inner peripheral wall of the cylinder T. To do. Therefore, the absorbing liquid staying due to the heat generation of the electromagnetic solenoid 8 is heated to a high concentration and does not cause crystallization.

When the electromagnetic solenoid 8 is not energized during the cooling operation or the operation stop state, as shown in FIG. 2, the plunger 7 and the spherical valve element 66 are provided.
Is set downward in the figure by the spring load of the spring S to close the valve port 64. The flow passage formed on the outer peripheral surface of the plunger 7 may have an axial plane 74 instead of the axial groove 73, as shown in FIG.

Both ends of the evaporation coil 41 are connected to the indoor unit 200 by a cold / hot water flow path 46 made of rubber hose or the like, and the cold / hot water for cooling / heating is circulated in the indoor unit 200 by a cooling / heating pump P3. In this embodiment, the lower end of the partition wall 40 is in contact with the bottom plate 13 and the upper part of the upper end of the partition wall 40 is the evaporated refrigerant.
It is a flow port from which the fluid flows to the absorber 3.

The refrigerant spraying tool 42 is used during the cooling operation and drops the refrigerant liquid on the evaporation coil 41. The dripped refrigerant wets the surface of the evaporation coil 41 due to surface tension, becomes a film, and drops downward due to the action of gravity, while depriving the evaporation coil 41 of heat of vaporization in the evaporation / absorption case 30 at a low pressure. To evaporate and cool the hot and cold water for cooling and heating flowing in the evaporation coil 41.

The condenser 5 is used during cooling operation, and is provided with a cooling coil 51 inside the condenser case 50, in which cooling water for exhaust heat cooled by the cooling tower CT is circulated. . The condenser case 50 communicates with the bottom portion 10A of the refrigerant recovery tank 10 through the refrigerant flow path L5, and also communicates with the low temperature regenerator 2 through the refrigerant vapor outlet 21 and the gap 5A, both of which cause a refrigerant difference due to a pressure difference. Is supplied. The supplied refrigerant is cooled by the cooling coil 51 and liquefied.

Condensed refrigerant liquid reservoir 52 provided under the condenser 5
The refrigerant cooler 43 installed above the evaporation coil 41 of the evaporator 4 is connected by the constant refrigerant flow path L6 in which the refrigerant liquid always flows down during the steady operation. Further, the bottom portion 5B of the condenser 5 and the refrigerant cooler 43 are connected by a temporary refrigerant passage L7 for temporarily flowing down the refrigerant liquid at the start of operation.

A refrigerant electromagnetic valve 53 is provided in the temporary refrigerant passage L7 and is opened / closed by the output of the control device 300. The refrigerant solenoid valve 53 has the same structure as the heating solenoid valve 6. The cooling coil 31 is connected to the cooling coil 51, and further connected to the cooling tower CT by a cooling water circulation path 34.

During the cooling operation, the cooling water pump P2 circulates the waste heat cooling water in the order of cooling tower CT → cooling coil 31 → cooling coil 51 → cooling tower CT. The absorption liquid is
The high temperature regenerator 1 → low temperature regenerator 2 → absorber 3 → absorption liquid pump P1 → high temperature regenerator 1 circulates in this order.

During heating operation, the heating solenoid valve 6 is opened,
Operate the absorbent pump P1. As a result, the high-temperature medium-concentration absorbent is separated from the high-temperature regenerator 1 by the medium-concentration absorbent separating column 12
The bottom portion 121 of the evaporator 4 flows into the bottom portion 4A of the evaporator 4. The cold / hot water in the evaporation coil 41 is heated and cooled by the cooling / heating pump P3.
Is supplied to the indoor unit 200 through the cold / hot water flow path 46 and serves as a heat source for heating. The medium-concentration absorbent in the evaporator 4 is
Enter the absorber 3 side from the communication port of 0, and the low-concentration absorbent liquid flow path L
After passing through 3, the liquid is returned to the heating tank 11 by the absorption liquid pump P1.

When the electromagnetic solenoid 8 of the heating solenoid valve 6 is energized and the plunger 7 is attracted by the electromagnetic force, the spherical valve body 66 integrally attached is also attracted upward and the valve port 64 is opened. The electromagnetic solenoid 8 is energized at all times during the heating operation. Due to this heat generation, the absorption liquid retained between the plunger 7 and the inner peripheral wall of the cylindrical body T is heated, and crystallization of a solvent such as lithium bromide occurs. It is easy to occur. If crystallization occurs, the plunger 7 is fixed, which causes malfunction such as fixing of the heating solenoid valve 6.

That is, even if the absorbing liquid circulates in the heating absorbing liquid flow path during the heating operation, a liquid film is formed by the surface tension at the inlet of the annular clearance, and the absorbing liquid enters the clearance. Prevent doing. For this reason, the heat generated by the electromagnetic solenoid 8 increases the concentration of the absorbing liquid in the clearance, causing crystallization and sticking to the inner peripheral wall of the cylindrical body T in which the plunger 7 is closed at one end.

In the present invention, the absorbing liquid circulates in the circulation passage 70 and is cooled, and at the same time, a certain amount of absorbing liquid flow is secured in the narrow gap (clearance) other than the axial groove 73. There is. As a result, occurrence of crystallization and fixation of the plunger 7 are effectively prevented. That is, when the absorbing liquid enters the cylindrical body T, since the notch 72 and the axial groove 73 open with a large gap, a liquid film due to the surface tension of the absorbing liquid does not occur and the cylindrical body T It is possible to enter inside, and as shown by the broken line arrow in FIG.
A circulation flow of the heating and absorbing liquid is generated in the circulation passage 70 of the axial hole 71 → the gap 69 → the axial groove 73.

This circulating flow mainly occurs in the circulating flow passage 70, but the U-turning flow in the gap 69 is the axial groove 73.
Other than the above, an induced flow is generated even in a clearance, which is a narrow gap between the plunger 7 and the inner peripheral wall of the cylinder T, and the absorption liquid is prevented from staying between the plunger 7 and the inner peripheral wall of the cylinder T. To do. Therefore, the absorbing liquid staying due to the heat generation of the electromagnetic solenoid 8 is heated to a high concentration and does not cause crystallization.

FIG. 5 shows a second embodiment, in which the outer peripheral surface of the plunger 7 is formed in a hexagonal shape, and a circulation passage 70 is formed on the entire circumference between the plunger 7 and the inner peripheral wall of the cylindrical body T. Instead of the cutout 72, a through hole 72A in the direct direction of the plunger 7 may be formed as an inlet for the absorbent.

FIG. 6 shows a third embodiment. In this embodiment, the shaft hole 71 in the plunger 7 and the notch 7 at the lower end are provided.
2, the hexagon of the outer peripheral surface of the plunger 7, the gap between the inner peripheral wall of the tubular body T, and the gap 69 form a circulation flow passage 70. In the case of this embodiment, the absorbing liquid enters from one side of the gap formed all around and flows to the other side. Further, the plunger 7 and the spherical valve element 66 are integrated by caulking the caulking member G to the plunger 7 and then to the spherical valve element 66. The second and third embodiments also have the same effects as the first embodiment.

In the above embodiment, the heating solenoid valve 6 has been described, but the present invention can also be applied to the refrigerant solenoid valve 53.
That is, the refrigerant liquid condensed in the condenser 5 contains some solvent such as lithium bromide, and the refrigerant solenoid valve 53 may be locked by crystallization due to energization. Therefore, if the circulation flow path 70 is formed between the valve body or the plunger 7 and the inner peripheral wall of the cylindrical body T, the occurrence of lock due to crystallization can be prevented.

In the above embodiment, the plunger 7 of the heating solenoid valve 6 and the spherical valve element 66 are integrally joined by welding, caulking or the like, but they may be integrally formed. Further, as the heat source, another heat source such as an electric heater can be used instead of the gas burner.

[Brief description of the drawings]

FIG. 1 is a front and plan sectional view of a heating solenoid valve according to a first embodiment.

FIG. 2 is a front sectional view of a heating solenoid valve according to the first embodiment.

FIG. 3 is a conceptual diagram of an absorption air conditioner.

FIG. 4 is a plan sectional view of a heating solenoid valve according to the first embodiment.

FIG. 5 is a front and plan sectional view of a heating solenoid valve according to a second embodiment.

FIG. 6 is a front and plan sectional view of a heating solenoid valve according to a third embodiment.

[Explanation of symbols]

 1 High Temperature Regenerator 2 Low Temperature Regenerator 3 Absorber 4 Evaporator 5 Condenser 6 Heating Solenoid Valve 7 Plunger 8 Electromagnetic Solenoid 30 Evaporation / Absorption Case 31 Cooling Coil 40 Partition Wall 41 Evaporation Coil 43 Refrigerant Cooler 53 Refrigerant Solenoid Valve 64 Valve mouth 66 Spherical valve body 100 Absorption type refrigeration system 200 Indoor unit 300 Control system T cylinder

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hisasuto Hirota 1211, Kasumita-cho, Hachioji-shi, Tokyo 4 Stock company, TG K. (72) Inventor, Koji Hanyu 1211, Kusada-cho, Hachioji-shi, Tokyo 4 TK company

Claims (6)

[Claims] 1. During cooling operation, a low-concentration absorbent is heated in a regenerator to separate it into a high-concentration absorbent and a refrigerant, and in an evaporator, the liquefied refrigerant liquid of the refrigerant is evaporated to heat the air conditioning heat. Cooling cold / hot water as a medium, in an absorber, the evaporated refrigerant is absorbed by the high-concentration absorption liquid, and the low-concentration absorption liquid that has absorbed the refrigerant and has a low concentration is provided in the low-concentration absorption liquid channel. It is returned to the regenerator by a liquid pump, and during the heating operation, the absorbing liquid is heated in the regenerator, and the absorbing liquid pump is operated so that the heated absorbing liquid passes through the heating absorbing liquid flow path with the electromagnetic valve for heating. In the absorption type air conditioner for supplying the evaporator to heat the cold / hot water and circulating the water to the regenerator, the heating solenoid valve is a cylindrical body having one end closed in the absorbing liquid flow path for heating. And the inner circumference of the cylinder And a plunger that is slidably accommodated with a clearance provided between the plunger and the outer periphery of the cylindrical body that is outside the heating absorbing liquid flow path, and is operated by urging the plunger by an electromagnetic force. An absorption type air conditioner having a circulation passage for heating and absorbing liquid between the plunger and an inner peripheral wall of the cylindrical body accommodating the plunger. 2. During cooling operation, the regenerator heats the low-concentration absorption liquid to separate it into a high-concentration absorption liquid and a refrigerant, and in a condenser, promotes liquefaction of the refrigerant separated in the regenerator and evaporates. In the vessel, the refrigerant liquid of the liquefied refrigerant is evaporated to cool the cold / hot water as the air-conditioning heat medium, and in the absorber, the refrigerant is absorbed by the high-concentration absorbent, and the refrigerant is absorbed to reduce the concentration. In an absorption type air conditioner that returns a low-concentration absorbing liquid to the regenerator by an absorption liquid pump provided in a low-concentration absorbing liquid flow path, the evaporator is from the condenser via a refrigerant liquid flow path with a solenoid valve for refrigerant. A refrigerant cooler to which the refrigerant liquid is supplied; and an evaporator coil in which the refrigerant liquid is sprayed on the surface from the refrigerant cooler and through which the cold / hot water flows, wherein the electromagnetic valve for the refrigerant is the refrigerant liquid flow path. It is placed inside a cylinder with one end blocked. In addition, a plunger that is slidably accommodated with a clearance provided between the inner peripheral wall of the cylindrical body and the inner peripheral wall of the cylindrical body is arranged on the outer periphery of the cylindrical body outside the refrigerant liquid flow path, and the An absorption type having an electromagnetic solenoid for urging and operating a plunger, wherein a circulation passage of a refrigerant liquid is provided between the plunger and an inner peripheral wall of the cylindrical body accommodating the plunger. Air conditioner. 3. The heating absorbing liquid flow path according to claim 1, wherein the heating absorbing liquid flow path intersects with the upstream flow path communicating with the regenerator and has one end closed and the other end evaporated. An absorption type air conditioner having a T-shaped flow path including a downstream flow path communicating with a container, and the cylindrical body being provided at one end of the downstream flow path. 4. The refrigerant liquid flow path according to claim 2,
It has a T-shaped flow path consisting of an upstream flow path communicating with the condenser, and a downstream flow path intersecting the upstream flow path and having one end closed and the other end communicating with the refrigerant cooler. The absorption type air conditioner, wherein the cylindrical body is provided at one end of the downstream side flow path. 5. The plunger according to claim 3, wherein the plunger has a valve body that opens and closes a valve opening in conjunction with the plunger, and the circulation flow passage has an axial hole provided at the center of the plunger and the plunger. An absorption type air conditioner comprising a gap between an axial groove or an axial plane formed on the outer peripheral wall of the cylinder and an inner peripheral wall of the cylindrical body. 6. The plunger according to claim 3 or 4, wherein the plunger has a valve body that opens and closes a valve opening in conjunction with the plunger, and the circulation flow path has a plurality of axial grooves formed on an outer peripheral surface of the plunger. Alternatively, an absorption type air conditioner comprising a gap between an axial plane and an inner peripheral wall of the cylindrical body.