KR101256307B1 - Valved apparatus and absorption-refrigerator using it - Google Patents

Abstract

[PROBLEMS] To provide a valve device and an absorption chiller that can maintain performance stably for a long time.
SOLUTION The valve device 40 attaches the valve drive part 45 to the piping 41 which flows liquid, and pipe | tube 41 the valve shaft 44 which comprises the valve drive part 45. A pipe seat 42 is provided in the pipe 41 that extends inside and is brought into contact with the valve body 43 provided at the tip of the valve shaft 44. It is set as the structure connected via the supply pipe 49 which has a flow path area larger than the clearance gap (delta) of the valve shaft penetration part 141. FIG.

Description

VALVED APPARATUS AND ABSORPTION-REFRIGERATOR USING IT}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve device and an absorption chiller using the same, wherein the absorption liquid from the absorber is branched into a high temperature regenerator and a low temperature regenerator.

DESCRIPTION OF RELATED ART Conventionally, the absorption chiller which is equipped with the high temperature regenerator, the low temperature regenerator, the condenser, the evaporator, and the absorber, and pipe-connected them and formed the circulation path of the absorbent liquid and the refrigerant | coolant, respectively is known (for example, refer patent document 1). In this absorption chiller, a dilution absorption liquid (hereinafter referred to as a rare absorption liquid) in which the refrigerant is absorbed in the absorption liquid is branched from the absorber to the high temperature regenerator and the low temperature regenerator, and connected to the high temperature regenerator, such as an orifice plate. By providing a resistance, the ratio of the rare absorbing liquid which flows to a high temperature regenerator and a low temperature regenerator is set.

Patent Document 1: Japanese Patent Application Laid-Open No. 2000-283668

However, in the above-described conventional configuration, since the resistance uses a fixed orifice plate, the ratio of the rare absorbent liquid to be distributed to the high temperature regenerator and the low temperature regenerator at the time of cooling high load and cooling low load differs, and thus the performance at cooling low load. (COP: Coefficient of Performance) may be lowered. Therefore, in order to adjust the distribution of the absorbent liquid at a ratio suitable for the cooling load, it is considered to provide a rare absorbent liquid distribution valve in one of the pipe connected to the high temperature regenerator and the pipe connected to the low temperature regenerator.

By the way, in an absorption chiller, an absorption liquid may contain many foreign substances, such as iron, by long term use or a vacuum opening work. When foreign matter such as iron powder enters the rare water absorbing liquid distribution valve, the valve body may be locked, and as a result, the performance may not be maintained.

This invention is made | formed in view of the above-mentioned situation, and an object of this invention is to provide the valve apparatus which can maintain performance stably for a long time, and the absorption type chiller using the same.

In order to achieve the above object, the present invention provides a valve seat for attaching the valve driving portion to the pipe through which the liquid flows, extending the valve shaft constituting the valve driving portion into the pipe, and contacting the valve body provided at the tip of the valve shaft. It is provided in the piping, and the penetration of the liquid into the valve driving portion is allowed through the gap of the valve shaft through portion of the piping in accordance with the operation of the valve shaft, and the same liquid source as the liquid in the valve driving portion and the valve of the piping It is connected via the supply pipe which has a flow path area larger than the clearance of a shaft penetration part.

In a valve apparatus in which liquid is allowed to enter the valve driving portion through a gap between a valve shaft through portion of a pipe in accordance with the operation of the valve shaft, when the foreign matter enters the liquid flowing in the pipe, for example, the foreign material is accompanied by the liquid. There is a risk of invading the valve driving portion and leading to malfunction.

In this invention, since the inside of the valve drive part and the same liquid source as a liquid were connected through the supply pipe which has a flow path area larger than the clearance of the valve shaft penetration part of a piping, since the flow path resistance becomes large compared with a supply pipe, the inside of a valve drive part is Unless a foreign substance is mixed into the liquid of the liquid source through the supply pipe having a small flow resistance, even if the foreign substance is mixed in the liquid flowing through the pipe, the foreign substance is accompanied by the liquid in the valve drive section. It is possible to eliminate the possibility of intrusion, which may lead to a malfunction.

In this case, the supply pipe may extend in the pipe and be connected to the liquid source.

In this configuration, even if the supply pipe leaks, since the supply pipe extends inside the pipe and is connected to the liquid source, leakage to the outside can be prevented.

An absorption chiller comprising a high temperature regenerator, a low temperature regenerator, a condenser, an evaporator, and an absorber, which are connected to each other to form a circulation path between the absorbent liquid and the refrigerant, and wherein the rare absorbent liquid is branched to the high temperature regenerator and the low temperature regenerator. The valve seat is provided externally to the piping for distributing the rare water absorbing liquid to the high temperature regenerator and the low temperature regenerator, the valve shaft constituting the valve driving part is extended into the pipe, and the valve seat in which the valve body provided at the tip of the valve shaft abuts the pipe. In addition, through the clearance of the valve shaft penetrating portion of the pipe in accordance with the operation of the valve shaft, the liquid is allowed to enter the valve driving portion, and the same liquid source as the rare water absorbing liquid in the valve driving portion and the valve shaft of the pipe You may connect via the supply pipe which has a flow path area larger than the clearance of a penetration part.

In the above configuration, the liquid source may supply an absorbing liquid or a refrigerant liquid containing few foreign substances into the valve driving unit.

The liquid source includes a rare absorbent liquid tank for storing the rare absorbent liquid, and a foreign matter removing means for removing the foreign matter in the rare absorbent liquid is disposed in the rare absorbent liquid tank, and the rare absorbent liquid discharged from the valve driver when the valve body is closed. May be introduced into the rare absorbent liquid tank to remove hand, and the rare absorbent liquid in the rare absorbent liquid tank may be introduced into the valve driving unit when the valve body is opened.

In the above configuration, the absorbent liquid pipe for supplying the rare absorbent liquid from the absorber to the high temperature regenerator and the low temperature regenerator, and an absorbent liquid pump provided in the rare absorbent liquid pipe, are connected to the rare absorbent liquid pipe. In addition, a rare water absorbing liquid tank for storing the rare water absorbing liquid may be provided in the supply pipe, and a foreign matter removing means for removing the foreign matter in the rare water absorbing liquid may be disposed in the rare water absorbing liquid tank.

In the above configuration, an evaporator refrigerant pipe connected to the spreader of the evaporator from the refrigerant liquid reservoir of the evaporator, and a refrigerant pump provided in the evaporator refrigerant pipe, the supply pipe is connected to the evaporator refrigerant pipe. In addition to the connection box, a solenoid valve may be provided in the supply pipe to open the solenoid valve regularly.

In the above configuration, a high temperature regenerator refrigerant pipe connected to the condenser from the high temperature regenerator is provided, the supply pipe is connected to the high temperature regenerator refrigerant pipe, and a solenoid valve is provided in the supply pipe, thereby providing the solenoid valve periodically. You can open it.

In the above configuration, the coolant liquid tank for storing the coolant liquid may be connected to the supply pipe, and the solenoid valve may be provided in the supply pipe to periodically open the solenoid valve.

According to the present invention, since a relatively clean absorption liquid or a refrigerant liquid can be supplied to the valve driving portion of the valve device, foreign matter circulating in the pipe path is less likely to enter the valve driving portion, thereby preventing the locking of the valve device. As a result, performance can be maintained stably for a long time.

1 is a schematic configuration diagram of an absorption chiller according to a first embodiment of the present invention.
2 is a cross-sectional view showing a rare water absorbing liquid distribution valve (valve device).
3 is a schematic diagram showing a lock preventing mechanism.
4 is a schematic diagram showing another lock preventing mechanism.
5 is a schematic view showing another lock preventing mechanism.
6 is a schematic configuration diagram of an absorption chiller according to a second embodiment of the present invention.
7 is a schematic configuration diagram of an absorption chiller according to a third embodiment of the present invention.
8 is a schematic configuration diagram of an absorption chiller according to a fourth embodiment of the present invention.
9 is a schematic configuration diagram of an absorption chiller according to a fifth embodiment of the present invention.

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

[First Embodiment]

1 is a schematic configuration diagram of an absorption chiller according to a first embodiment.

The absorption chiller 100 is a dual-effect absorption chiller using water as a refrigerant and an aqueous lithium (LiBr) solution as an absorption liquid.

As shown in FIG. 1, the absorption chiller 100 includes an evaporator 1, an absorber 2 provided in the evaporator 1, and an evaporator absorber body in which these evaporators 1 and an absorber 2 are accommodated. (3), a high temperature regenerator 5 having a gas burner 4, a low temperature regenerator 6, a condenser 7 provided in the low temperature regenerator 6, and these low temperature regenerators 6 And a low temperature regenerator condenser body (8), a low temperature heat exchanger (12), a high temperature heat exchanger (13), a refrigerant drain heat recovery unit (16), and a rare water pump (absorbent pump) (P1), a concentrated absorbent liquid pump (P2), and a refrigerant pump (P3), each of which is connected to a pipe through an absorbent liquid pipe (21 to 25), a coolant pipe (31 to 35), or the like. It is.

Reference numeral 14 denotes a cold / hot water pipe for circulating and supplying a heat load (for example, an air conditioner) not showing brine heat exchanged with the refrigerant in the evaporator 1, and the cold / hot water pipe 14 14 A of heat transfer tubes formed in a part of) are arranged in the evaporator 1. The temperature sensor 51 which measures the temperature of the brine which distribute | circulates the inside of the said cold / hot water pipe 14 is provided in the heat exchanger tube 14A downstream of the cold / hot water pipe 14. Reference numeral 15 denotes a cooling water pipe for circulating the cooling water sequentially to the absorber 2 and the condenser 7, and each of the heat transfer pipes 15A and 15B formed in a part of the cooling water pipe 15 is respectively the absorber 2 and the condenser ( 7) is arranged in. Reference numeral 50 denotes a controller in charge of controlling the entire absorption type refrigerator 100. The temperature sensor 51 outputs the measurement result to the control device 50 under the control of the control device 50.

The absorber 2 has a function of absorbing the refrigerant vapor evaporated in the evaporator 1 into the absorbent liquid and maintaining the pressure in the evaporator absorber body 3 in a high vacuum state. In the lower part of the absorber 2, a rare absorbent liquid reservoir 2A is formed in which the rare absorbent liquid diluted with the refrigerant vapor is stored, and the rare absorbent liquid reservoir 2A is controlled rarely by the inverter 52. One end of the rare water absorption pipe 21 provided with the absorption liquid pump P1 is connected. The rare water absorbing liquid pipe 21 branches into the first rare water absorbing liquid pipe 21A and the second rare water absorbing liquid pipe 21B on the downstream side of the rare water absorbing liquid pump P1, and the first rare water absorbing liquid pipe 21A is a refrigerant drain heat recovery. Via the group 16, the second rare water absorbing tube (21B) is again joined via the low temperature heat exchanger (12). The other end of the rare water absorbing tube 21 is branched into a third rare water absorbing tube (pipe) 21C and a fourth rare absorbing liquid tube (piping) 21D, and the third rare water absorbing liquid tube 21C is a high temperature heat exchanger. After passing through (13), it is opened in the base part 5B located above the heat exchange part 5A formed in the high temperature regenerator 5, and the 4th rare water absorption pipe 21D is a low temperature regenerator. It is opening in 6 A of base layer parts formed in the upper part in (6).

Under the high temperature regenerator 5, a gas burner 4 having an igniter 4A for igniting with a fuel such as city gas, for example, and a fuel control valve 4B for controlling the amount of fuel to vary the amount of heat source. Is accommodated. When the gas burner 4 receives the combustion signal output from the control device 50, the gas burner 4 burns the gas, and the opening degree of the fuel control valve 4B is measured by the temperature sensor 51 by the control device 50. It is controlled according to the temperature. In the high temperature regenerator 5, a heat exchanger 5A is formed above the gas burner 4 to heat-regenerate the absorbing liquid using the flame of the gas burner 4 as a heat source.

An exhaust path 17 through which exhaust gas combusted by the gas burner 4 flows is connected to the heat exchange part 5A, and the heat exchange part is heated and regenerated by the heat exchange part 5A on the side of the heat exchange part 5A. A concentrated absorbent liquid reservoir 5C is formed in which the concentrated absorbent liquid flowing out from the portion 5A is stored. The concentrated absorbent liquid reservoir 5C is provided with a liquid level sensor 53 for detecting the liquid level of the absorbent liquid stored in the concentrated absorbent liquid reservoir 5C (in the high temperature regenerator 5).

One end of the concentrated absorbent liquid tube 22 is connected to the lower end of the concentrated absorbent liquid reservoir 5C, and the other end of the concentrated absorbent liquid tube 22 extends from the low temperature regenerator 6 through the high temperature heat exchanger 13. Join with (24). The high temperature heat exchanger 13 heats the absorbent liquid flowing through the third rare absorbent liquid tube 21C by the heat of the high temperature absorbent liquid flowing out from the concentrated absorbent liquid reservoir 5C. The gas burner 4 in the high temperature regenerator 5 is heated. To reduce fuel consumption. Moreover, the high temperature heat exchanger 13 upstream and the absorber 2 of the concentrated absorption liquid pipe 22 are connected by the absorption liquid pipe 23 which the opening-closing valve V1 interposes.

The low temperature regenerator 6 heats and regenerates the absorbent liquid stored in the absorbent liquid reservoir 6B formed below the base layer portion 6A using the refrigerant vapor separated from the high temperature regenerator 5 as a heat source. The heat transfer pipe 31A formed in a part of the refrigerant pipe 31 extending from the upper end of the high temperature regenerator 5 to the bottom of the condenser 7 is disposed. By passing the refrigerant vapor through the refrigerant pipe 31, the heat of the refrigerant vapor is transferred to the absorption liquid stored in the absorption liquid reservoir 6B through the heat transfer tube 31A, and the absorption liquid is concentrated.

One end of the intermediate absorbent liquid tube 24 is connected to the absorbent liquid reservoir 6B of the low temperature regenerator 6, and the other end of the intermediate absorbent liquid tube 24 joins the concentrated absorbent liquid tube 22 to provide the concentrated absorbent liquid tube 25. Becomes The concentrated absorbent liquid pipe 25 is connected to the concentrated liquid spreader 2C provided above the base portion 2B of the absorber 2 through the concentrated absorbent liquid pump P2 and the low temperature heat exchanger 12. The low temperature heat exchanger 12 is a second rare absorbing liquid tube (2) due to the heating of the concentrated absorbent liquid flowing out from the concentrated absorbent liquid reservoir 5C of the high temperature regenerator 5 and the intermediate absorbent liquid flowing out from the absorbent liquid reservoir 6B of the low temperature regenerator 6 ( The rare absorbent liquid flowing through 21B) is heated. On the upstream side of the concentrated absorbent liquid pump P2, bypass pipes 25A and 25B are provided for bypassing the concentrated absorbent liquid pump P2 and the low temperature heat exchanger 12, and the operation of the concentrated absorbent liquid pump P2 is stopped. When stopped, the concentrated absorbent liquid flowing out from the concentrated absorbent liquid reservoir 5C of the high temperature regenerator 5 and the intermediate absorbent liquid flowing out from the absorbent liquid reservoir 6B of the low temperature regenerator 6 are connected to the bypass pipes 25A and 25B. It is passed through and supplied into the absorber 2 without passing through the low temperature heat exchanger 12.

As described above, the refrigerant liquid reservoir 7A formed at the base portion 5B of the high temperature regenerator 5 and the bottom of the condenser 7 is a heat transfer pipe 31A piped to the absorbent liquid reservoir 6B of the low temperature regenerator 6. And a refrigerant pipe 31 passing through the refrigerant drain heat recovery unit 16, and the upstream side of the heat transfer pipe 31A of the refrigerant pipe 31 and the base layer portion 2B of the absorber 2 are open / close valves V2. Is connected by a refrigerant pipe 32 interposed therebetween. The refrigerant liquid reservoir 7A of the condenser 7 and the base layer portion 1A of the evaporator 1 are connected by a refrigerant pipe 33 interposed between the U seal portions 33A. Further, a coolant liquid reservoir 1B is formed below the evaporator 1 to store the liquefied refrigerant, and the spreader disposed above the coolant liquid reservoir 1B and the base layer portion 1A of the evaporator 1 ( 1C is connected by the refrigerant pipe 34 through which the refrigerant pump P3 is interposed. The downstream side of the refrigerant pump P3 of the refrigerant pipe 34 and the absorbent liquid reservoir 2A of the absorber 2 are connected by the refrigerant pipe 35 through the on / off valve V3. Moreover, the outlet side of the heat exchanger tube 15B of the cooling water pipe 15 and the outlet side of the heat exchanger tube 14A of the cold / hot water pipe 14 are connected by the communication pipe 36 through which the switching valve V4 is interposed.

The absorption chiller 100 performs a cooling operation for taking out cold water from the cold / hot water pipe 14 under the control of the controller 50. In the cooling operation, the temperature (measured by the temperature sensor 51) of the evaporator 1 exit side of the brine (for example, cold water) circulated and supplied to a heat load (not shown) through the cold / hot water pipe 14 is predetermined. The amount of heat input to the absorption chiller 100 to be a set temperature, for example, 7 ° C, is controlled by the controller 50. Specifically, the control device 50 starts all the pumps P1 to P3, and also burns the gas in the gas burner 4 so that the temperature of the brine measured by the temperature sensor 51 reaches a predetermined temperature of 7 ° C. The fire power of the gas burner 4 is controlled to be. In addition, the closing valves V1 to V4 are closed during the cooling operation.

The rare absorbent liquid returned from the absorber 2 to the high temperature regenerator 5 by the rare absorbent liquid pump P1 through the rare absorbent liquid tube 21 is flamed by the gas burner 4 in the high temperature regenerator 5, Since it is heated by the combustion gas, the refrigerant in the rare water is evaporated off. The concentrated absorbent liquid whose concentration is increased by evaporating and separating the refrigerant from the high temperature regenerator (5) is passed through the high temperature heat exchanger (13) by the concentrated absorbent liquid pump (P2) of the concentrated absorbent liquid pipe (25) through the concentrated absorbent liquid pipe (22), Flow into the concentrated absorbing liquid tube (25).

The rare absorbent liquid returned from the absorber 2 to the low temperature regenerator 6 by the rare absorbent liquid pump P1 through the rare absorbent liquid tube 21 is supplied from the high temperature regenerator 5 through the refrigerant tube 31 to transfer the heat transfer tube 31A. The refrigerant is heated by a high temperature refrigerant vapor flowing into the evaporator, and the refrigerant in the rare water is evaporated and separated. The intermediate absorbent liquid in which the concentration is increased by evaporating and separating the refrigerant from the low temperature regenerator 6 flows through the intermediate absorbent liquid tube 24 and merges in the concentrated absorbent liquid flowing through the concentrated absorbent liquid tube 22 and the concentrated absorbent liquid tube 25. The concentrated absorbent liquid is sent to the absorber 2 via the low temperature heat exchanger 12, and is scattered from the upper part of the concentrate spreader 2C.

Meanwhile, the refrigerant separated and produced by the low temperature regenerator 6 enters the condenser 7 and condenses and is stored in the refrigerant liquid reservoir 7A. When a lot of refrigerant liquid is stored in the refrigerant liquid reservoir 7A, this refrigerant liquid flows out of the refrigerant liquid reservoir 7A, enters the evaporator 1 via the refrigerant pipe 33, and the refrigerant pump P3. It is lifted up through the refrigerant pipe 34 by the operation of and spreads from the spreader 1C onto the heat transfer pipe 14A of the cold / hot water pipe 14.

Since the refrigerant liquid scattered over the heat pipe 14A takes vaporization heat from the brine passing through the inside of the heat pipe 14A and evaporates, the brine passing through the inside of the heat heater 14A is cooled, and thus the brine that lowered the temperature is cooled / hot water. It is supplied to the heat load from the pipe 14 and cooling operation such as cooling is performed. Then, the refrigerant evaporated in the evaporator 1 enters the absorber 2, is supplied from the high temperature regenerator 5 and the low temperature regenerator 6, and absorbed into the concentrated absorbent liquid scattered from above, so that the rare absorbent liquid reservoir of the absorber 2 is absorbed. The circulation stored in 2A and returned to the high temperature regenerator 5 by the rare water absorbing pump P1 is repeated. In addition, the heat generated when the absorbent liquid absorbs the refrigerant is cooled by the heat transfer pipe 15A of the cooling water pipe 15 disposed in the absorber 2.

During the cooling operation of the absorption chiller 100, when the load of the heat load decreases and the amount of heat input to the high temperature regenerator 5 decreases, the pressure in the low temperature regenerator 6 greatly decreases.

Therefore, the amount of rare absorbent liquid flowing to the low temperature regenerator 6 is increased compared to the high temperature regenerator 5, and the balance of the ratio of the rare absorbent liquid distributed to the high temperature regenerator 5 and the low temperature regenerator 6 is broken, resulting in a decrease in performance. I might do it.

The absorption chiller 100 of the present embodiment is provided in the fourth rare absorbent liquid tube 21D, and the rare absorbent liquid distribution which is an electric valve that varies the ratio of the rare absorbent liquid flowing by branching to the high temperature regenerator 5 and the low temperature regenerator 6. A valve (valve device) 40 is provided.

In addition, the absorption chiller 100 of the present embodiment is provided in the high temperature regenerator 5 and has a temperature sensor 54 for detecting the temperature of the absorbing liquid in the high temperature regenerator 5 (temperature of the high temperature regenerator 5), and a cooling water pipe ( A coolant inlet temperature sensor 55 is provided on the inlet side of the absorber 2 to detect the coolant inlet temperature. The rare water absorbing pump P1 is configured such that the operating frequency is adjusted in accordance with the temperature of the high temperature regenerator 5 detected by the temperature sensors 54 and 55 and the cooling water inlet temperature. In other words, the operating frequency of the rare water liquid pump P1 changes depending on the load of the heat load, that is, the pressure in the low temperature regenerator 6. Specifically, as the pressure in the low temperature regenerator 6 decreases, the operating frequency of the rare water liquid pump P1 decreases.

The controller 50 controls (adjusts) the opening degree of the rare water absorbing liquid distribution valve 40 in accordance with the pressure in the low temperature regenerator 6, that is, the operating frequency of the rare water absorbing liquid pump P1.

By the way, in the absorption chiller 100, the absorbent liquid may contain a large amount of foreign matters (hereinafter, simply referred to as foreign matters), such as iron adhering to the magnetic material, by long-term use or vacuum opening work. When foreign matter enters the rare water liquid distribution valve 40, there is a fear that the rare water liquid distribution valve 40 is locked. As a method of improving the durability of the rare water absorbing distribution valve, for example, a method using a high torque motor is used. However, in this method, the cost of the rare water absorbing liquid distribution valve is increased, and the high torque motor is disposed. It is difficult to make the absorbent liquid distribution valve larger in size and to use it as a standard in an absorption type refrigerator. For this reason, it is desirable to be able to use the general purpose rare water distribution valve for a long time.

Therefore, in this embodiment, the lock prevention mechanism 60 which prevents the lock of the rare water absorption liquid distribution valve 40 is provided. The lock prevention mechanism 60 is provided with the 1st supply pipe 61 which supplies a rare absorption liquid to the rare absorption liquid distribution valve 40, and the rare absorption liquid tank (liquid source) 62 which stores a rare absorption liquid. One end of the first supply pipe 61 is connected to the rare water absorbing liquid distribution valve 40, and the other end is connected to the fourth rare water absorbing liquid pipe 21D upstream of the rare water absorbing liquid distribution valve 40. The first supply pipe 61 is divided into two portions with the rare water absorbing tank 62 interposed therebetween, and the distribution valve tube 63 is disposed on the rare water absorbing liquid distribution valve 40 side, and the fourth rare water absorbing liquid pipe 21D is provided. It has an introduction pipe 64A.

2 is a cross-sectional view showing the rare water absorbing liquid distribution valve 40.

The rare water absorbing liquid distribution valve 40 is folded into the valve body (piping) 41, the seat (valve seat) 42 disposed in the valve body 41, and the seat 42 to allow fluid to pass through. A valve body 43 for adjusting the flow rate, a valve shaft 44 supporting the valve body 43, a cylindrical can (valve drive part) 45 fixed to the valve body 41, and a can 45 Of the rotor 46 rotatably supported on the inner circumference of the rotor 46 and formed of a magnetic material such as a permanent magnet, and converting the rotation of the rotor 46 into a folding motion with respect to the seat 42 of the valve body 43. The screw 47 and the sleeve 48 which connect the feed screw 47 to the rotor 46 are provided. 146 is a stator. When the rotor 46 rotates in cooperation with the stator 146, the valve shaft 44 moves up and down by the rotation of the feed screw 47, and the valve body 43 seats 42. Fold about In this case, since a small gap δ exists in the valve shaft penetrating portion 141 of the valve body 41, penetration of the rare absorbing liquid into the can 45 is allowed through the gap δ.

The valve body 41 is a circular tube formed in a substantially 'L' shape in the side view, and in the valve body 41, the rare water absorbing liquid flows from the arrow A in FIG. Here, the central axis on the upstream side of the valve body 41 is referred to as the central axis C. FIG.

One end 49A of the second supply pipe 49 is disposed in the can 45. The diameter of the 2nd supply pipe 49 is formed smaller than the diameter of the valve main body 41, and is bent in a substantially "co" shape in the side view. The second supply pipe 49 passes through the valve body 41 from the can 45 and extends into the valve body 41 along the central axis C. As shown in FIG. The other end 49B of the second supply pipe 49 is located outside the radius R of the valve body 41.

3 is a schematic diagram showing the lock preventing mechanism 60.

An orifice 21D1 is provided in the fourth rare water absorbing tube 21D, and the rare water absorbing liquid distribution valve 40 is welded to the fourth rare absorbing liquid tube 21D on the downstream side of the orifice 21D1. In FIG. 3, the code | symbol W represents a welding location. By the orifice 21D1, the amount of rare absorbed liquid flowing through the rare absorbed liquid distribution valve 40 is adjusted.

The other end 49B of the second supply pipe 49 penetrates through the fourth rare water absorbing pipe 21D and is exposed to the outside of the fourth rare water absorbing pipe 21D. The distribution valve piping 63 has a diameter larger than that of the second supply pipe 49, and is welded to the fourth rare absorbing liquid pipe 21D so that the other end 49B of the second supply pipe 49 is disposed therein. have. Thereby, the 2nd supply pipe 49 and the 1st supply pipe 61 are connected. The 1st supply pipe 61 and the 2nd supply pipe 49 comprise the supply pipe of this embodiment.

The distribution valve piping 63 extends into the rare absorbent liquid tank 62, and a magnetic member formed of a permanent magnet such as a ferrite magnet in the outer peripheral portion of the distribution valve piping 63 in the rare absorbent liquid tank 62 ( Foreign material removal means) 65 is disposed. One end of the introduction pipe 64A is connected to the side surface of the rare water absorption tank 62, and the other end of the introduction pipe 64A is connected to the fourth rare water absorption pipe 21D on the downstream side of the orifice 21D1.

Next, the operation of the rare water absorbing liquid distribution valve 40 and the lock prevention mechanism 60 will be described.

The rare absorbent liquid distribution valve 40 has a structure in which the rare absorbent liquid is filled in the can 45, and the gap between the valve body 41 and the valve shaft 44 at the time of full deployment of the valve body 43 2) (see FIG. 2), the rare water absorbing liquid is sucked into the can 45, and from the clearance δ between the valve body 41 and the valve shaft 44 when the valve body 43 is fully closed. Drain the rare absorbent liquid. The rare water absorbing liquid suction amount per one valve | bulb closing operation | movement of the valve body 43 is a very small quantity, for example, all the rare absorbing liquids in the can 45 are replaced by about 250 expansion / closing operation | movement.

Thus, since the rare absorbent liquid flows into the can 45, when the rare absorbent liquid contains many foreign substances and becomes dirty, foreign substances adhere to the rotor 46 formed of the magnetic material, and the valve body 43 finally locks. I might do it.

In the present embodiment, the rare water absorbing liquid tank 62 having the magnetic member 65 is provided, and the rare water absorbing liquid tank 62 and the can 45 are connected to the first supply pipe at the time of opening and closing of the valve body 43. 61) and the rare absorbing liquid is moved through the second supply pipe 49, the rare absorbing liquid containing a large amount of foreign matter flows into the can 45 from the gap δ between the valve body 41 and the valve shaft 44 It is preventing. More specifically, the second supply pipe 49 has a diameter that results in a pressure loss smaller than the pressure loss when passing through the gap δ (about 0.05 mm) between the valve body 41 and the valve shaft 44. For example, it is formed to have a diameter of about 4 mm, and the rare water absorbing liquid moves through the second supply pipe 49 rather than the gap δ between the valve body 41 and the valve shaft 44. The rare absorbent liquid in the rare absorbent liquid tank 62 is removed and purified by the magnetic member 65 disposed in the rare absorbent liquid tank 62.

Therefore, at the time of deployment of the valve body 43, as shown by the arrow D in FIG. 3, the rare water absorbed in the rare water absorbing tank 62 can be discharged through the first supply pipe 61 and the second supply pipe 49. (45) flows into. As a result, the rare absorbent liquid containing a large amount of dirt hardly flows into the can 45, so that the lock of the valve body 43 can be prevented. As a result, the rare absorbent liquid can be branched appropriately at low load. Furthermore, stable low load performance can be realized. Since the second supply pipe 49 may be provided as the rare water absorbing liquid distribution valve 40, it is possible to suppress the high liquidity and the enlargement of the rare water absorbing liquid distribution valve 40. In addition, the rare absorbent liquid flows into the rare absorbent liquid tank 62 from the fourth rare absorbent liquid tube 21D through the inlet pipe 64A only as much as it flows out of the rare absorbent liquid distribution valve 40.

On the other hand, at the time of deployment of the valve body 43, as shown by arrow E in FIG. 3, the rare water absorbing liquid in the can 45 passes through the second supply pipe 49 and the first supply pipe 61 to the rare water absorbing tank 62. Inflow). The rare water absorbing liquid in the rare water absorbing tank 62 is discharged to the fourth rare water absorbing pipe 21D through the introduction pipe 64A only as long as the rare water absorbing liquid flows into the rare water absorbing liquid tank 62.

Since the second supply pipe 49 extends inside the valve body 41 and the fourth rare water liquid pipe 21D and is connected to the rare water liquid tank 62, even if the second supply pipe 49 leaks, Leakage can be prevented, and as a result, the vacuum state of the absorption refrigerator 100 can be maintained. In addition, since the second supply pipe 49 extends into the valve body 41 and the fourth rare water absorbing pipe 21D, the second supply pipe extends outside the valve body 41 and the fourth rare water absorbing pipe 21D. In comparison with the arrangement, the number of welding spots W for providing the rare water absorbing liquid distribution valve 40 to the fourth rare water absorbing pipe 21D can be reduced.

As described above, according to the present embodiment, the rare absorbent liquid distribution valve 40 is provided in the fourth rare absorbent liquid pipe 21D for distributing the rare absorbent liquid to the high temperature regenerator 5 and the low temperature regenerator 6, It was set as the structure provided with the 1st supply pipe 61 and the 2nd supply pipe 49 which supply a little rare absorption liquid into the can 45 of the rare absorption liquid distribution valve 40. FIG. In addition, a rare water absorbing liquid tank 62 for storing the rare water absorbing liquid is provided in the first supply pipe 61, and a magnetic member 65 for removing foreign matter in the rare water absorbing liquid is disposed in the rare water absorbing liquid tank 62. The rare absorbent liquid discharged from the can 45 at the closing of the distribution valve 40 is introduced into the rare absorbent liquid tank 62 to remove foreign substances, and the rare absorbent liquid tank 62 at the time of opening the rare absorbent liquid distribution valve 40. It was set as the structure which flows in the rare water absorption liquid into the can 45. For this reason, since the rare absorbing liquid containing a foreign material is prevented from flowing into the can 45, the lock of the valve body 43 can be prevented, As a result, a rare absorbing liquid can be distributed appropriately at the time of low load, Furthermore, stable low load performance can be realized. Moreover, since the rare water absorption liquid is supplied to the can 45, corrosion of piping etc. can be suppressed compared with the case where a refrigerant liquid is supplied.

In addition, according to the present embodiment, since the second supply pipe 49 extends inside the valve body 41 and the fourth rare water solution pipe 21D and is connected to the rare water solution tank 62, the second supply pipe ( Even if 49) is leaked, leakage to the outside can be prevented.

In addition, in this embodiment, although the magnetic member 65 was provided as a foreign material removal means, the foreign material removal means is not limited to this, For example, the filtration filter which filters a rare absorption liquid and removes the foreign material in a rare absorption liquid (not shown). )

In addition, in the present embodiment, the introduction pipe 64A is connected to the fourth rare water absorbing pipe 21D on the downstream side of the orifice 21D1. However, as shown in FIG. 4, the introduction pipe 64B is connected to the orifice 21D1. You may weld to the 4th rare absorption liquid pipe 21D of the upstream side of the orifice 21D1 of ().

In addition, in the present embodiment, the introduction pipe 64A is welded to the fourth rare water absorption pipe 21D, but as shown in FIG. 5, the introduction pipe 64C is the rare water absorption reservoir 2A of the absorber 2. You may weld to.

Second Embodiment

Next, 2nd Embodiment is described.

6 is a schematic configuration diagram of an absorption chiller 200 according to a second embodiment. Since the absorption chiller 200 is configured in the same manner as the absorption chiller 100 according to the first embodiment, in addition to the lock prevention mechanism 260 in place of the lock prevention mechanism 60 (FIG. 1), FIG. 6, the same code | symbol is attached | subjected to the same part as the absorption type refrigerator 100 shown in FIG. 1, and description is abbreviate | omitted.

The lock prevention mechanism 260 has a first supply pipe 561 for supplying the rare absorbed liquid to the rare absorbed liquid distribution valve 40 and a rare absorbed liquid tank (liquid source) 262 for storing the rare absorbed liquid. One end of the first supply pipe 561 is welded to the fourth rare water absorption pipe 21D and connected to the second supply pipe 49 (FIG. 2) similarly to the first supply pipe 61 of the first embodiment. The other end of the first supply pipe 261 is welded to the rare water absorption pipe 21 on the downstream side of the rare water absorption pump P1.

The first supply pipe 261 is divided into two portions with the rare water absorbing tank 62 interposed therebetween, and the distribution valve pipe 263 is provided on the rare water absorbing liquid distribution valve 40 side and the fourth rare water absorbing liquid pipe 21D side. It has an introduction tube 264. The 1st supply pipe 261 and the 2nd supply pipe 49 comprise the supply pipe of this embodiment. In the rare water absorbing liquid tank 262, a magnetic member (foreign matter removing means) 265 formed of permanent magnets such as a ferrite magnet, for example, is disposed.

In the lock preventing mechanism 260 configured as described above, the rare water absorbing liquid is constantly supplied from the rare water absorbing liquid tube 21 to the rare water absorbing liquid tank 262 through the introduction pipe 264 by the pressure of the rare water absorbing liquid pump P1. The rare absorbent liquid in the rare absorbent liquid tank 262 is removed and purified by the magnetic member 265, and is supplied to the rare absorbent liquid distribution valve 40 through the first supply pipe 261. As a result, as shown in FIG. 2, the rare water-absorbing liquid containing a large amount of foreign matter becomes difficult to flow into the can 45, so that the lock of the valve body 43 can be prevented, and as a result, appropriately at low load. The rare absorbent liquid can be distributed, and further, stable low load performance can be realized. In the present embodiment, the pressure of the rare water absorbing pump P1 is applied to the first supply pipe 261 and the second supply pipe 49, and the pressure loss is caused by the gap between the valve body 41 and the valve shaft 44. Since the side of the second supply pipe 49 is higher than δ), the rare water absorbing liquid in the can 45 is discharged from the gap δ between the valve body 41 and the valve shaft 44 to the valve body 41.

As described above, according to the present embodiment, the absorbent liquid tube 21 for supplying the rare absorbent liquid from the absorber 2 to the high temperature regenerator 5 and the low temperature regenerator 6 is provided in the rare absorbent liquid tube 21. A rare water absorbing tank (262) is provided, which is provided with a rare water absorbing liquid pump (P1), which connects the first supply pipe (261) to the rare water absorbing liquid pipe (21) and stores the rare absorbing liquid in the first supply pipe (261). In this rare water absorbing liquid tank 262, a magnetic member 265 for removing foreign matter in the rare water absorbing liquid was disposed. For this reason, the rare absorbent liquid is always supplied from the rare absorbent liquid tank 262 to the can 45, and the rare absorbent liquid containing a foreign material is always prevented from flowing into the can 45, and the lock of the valve body 43 is prevented. can do. As a result, the rare water absorbing liquid can be appropriately distributed at low load, and further, stable low load performance can be realized. In addition, since the rare water absorbing liquid is supplied to the can 45, corrosion of piping and the like can be suppressed as compared with the case where the refrigerant liquid is supplied.

In addition, in this embodiment, although the magnetic member 265 was provided as a foreign material removal means, the foreign material removal means is not limited to this, For example, the filtration filter which filters a rare absorption liquid and removes the foreign material in a rare absorption liquid (not shown). )

[Third Embodiment]

Next, 3rd Embodiment is described.

7 is a schematic configuration diagram of an absorption chiller 300 according to a third embodiment. Since the absorption chiller 300 is configured in the same manner as the absorption chiller 100 according to the first embodiment, in addition to having the lock prevention mechanism 360 in place of the lock prevention mechanism 60 (FIG. 1), In FIG. 7, the same code | symbol is attached | subjected to the same part as the absorption type refrigerator 100 shown in FIG. 1, and description is abbreviate | omitted.

The lock prevention mechanism 360 includes a first supply pipe 361 for supplying the refrigerant liquid to the rare water absorbing liquid distribution valve 40, and a solenoid valve 362 provided in the middle of the first supply pipe 361. One end of the first supply pipe 361 is welded to the fourth rare water absorption pipe 21D similarly to the first supply pipe 61 of the first embodiment, and is connected to the second supply pipe 49 (FIG. 2). One end of the first supply pipe 361 is welded to the refrigerant pipe 34 (liquid source) downstream of the refrigerant pump P3. The 1st supply pipe 361 and the 2nd supply pipe 49 comprise the supply pipe of this embodiment. The solenoid valve 362 is opened and closed by the control of the control apparatus 50.

In the lock prevention mechanism 360 configured as described above, the solenoid valve 362 is regularly opened, for example, for a predetermined time (for example, about 1 minute) at the start of operation of the absorption chiller 300. Therefore, the coolant liquid is regularly supplied from the coolant pipe 34 to the rare water absorbing liquid distribution valve 40 through the first supply pipe 361 by the pressure of the coolant pump P3. Here, since the refrigerant liquid flowing through the refrigerant pipe 34 is separated by evaporation in the high temperature regenerator 5, there is little foreign matter in the refrigerant liquid. As a result, as shown in FIG. 2, the rare water-absorbing liquid containing a large amount of foreign matter becomes difficult to flow into the can 45, so that the lock of the valve body 43 can be prevented, and as a result, appropriately at low load. The rare absorbent liquid can be distributed, and further, stable low load performance can be realized. In the present embodiment, the pressure of the refrigerant pump P3 is applied to the first supply pipe 561 and the second supply pipe 49, and the pressure loss is caused by the gap δ between the valve body 41 and the valve shaft 44. Since the side of the second supply pipe 49 is higher than), the rare water absorbing liquid in the can 45 is discharged from the gap δ between the valve body 41 and the valve shaft 44 to the valve body 41.

As explained above, according to this embodiment, the refrigerant pipe 34 connected from the refrigerant liquid reservoir 1B of the evaporator 1 to the spreader 1C of this evaporator 1, and this refrigerant pipe 34 A refrigerant pump (P3) provided at the upper portion, the first supply pipe (361) is connected to the refrigerant pipe (34), and the solenoid valve (362) is provided in the first supply pipe (361), the solenoid valve (362). ) Was made to open regularly. For this reason, the coolant liquid is regularly supplied from the coolant pipe 34 to the can 45, and the rare water absorbing liquid containing foreign matter is prevented from flowing into the can 45, thereby preventing the locking of the valve body 43. Can be. As a result, the rare water absorbing liquid can be appropriately distributed at low load, and further, stable low load performance can be realized.

In the present embodiment, the solenoid valve 362 has been opened for a predetermined time (for example, about 1 minute) at the start of operation of the absorption chiller 300, but is not limited thereto. For example, the absorption chiller ( The predetermined time may be opened for each predetermined driving time of 300.

[Fourth Embodiment]

Next, 4th Embodiment is described.

8 is a schematic configuration diagram of an absorption chiller 400 according to a fourth embodiment. Since the absorption chiller 400 is configured in the same manner as the absorption chiller 100 according to the first embodiment, in addition to having the lock prevention mechanism 460 instead of the lock prevention mechanism 60 (FIG. 1), FIG. In FIG. 8, the same code | symbol is attached | subjected to the same part as the absorption type refrigerator 100 shown in FIG. 1, and description is abbreviate | omitted.

The lock preventing mechanism 460 includes a first supply pipe 461 for supplying refrigerant liquid to the rare water absorbing liquid distribution valve 40, and an electromagnetic valve 462 provided in the middle of the first supply pipe 461. One end of the first supply pipe 461 is welded to the fourth rare water absorption pipe 21D similarly to the first supply pipe 61 of the first embodiment, and is connected to the second supply pipe 49 (FIG. 2). The other end of the first supply pipe 461 is welded to the refrigerant pipe 31 (liquid source) on the upstream side of the refrigerant drain heat recovery device 16. The 1st supply pipe 461 and the 2nd supply pipe 49 comprise the supply pipe of this embodiment. The solenoid valve 462 is opened and closed by the control of the control apparatus 50.

In the lock prevention mechanism 460 configured as described above, the solenoid valve 462 is regularly opened, for example, for a predetermined time (for example, about 1 minute) when the cooling load of the absorption chiller 400 is 80% or more. Since the pressure is relatively high due to the evaporation of the refrigerant in the high temperature regenerator 5 inside the refrigerant pipe 31, the pressure difference between the refrigerant pipe 31 and the rare water absorbing liquid distribution valve 40 is increased from the refrigerant pipe 31. The coolant liquid is periodically supplied to the rare water absorbing liquid distribution valve 40 through the first supply pipe 461. Here, since the refrigerant liquid flowing through the refrigerant pipe 31 is separated by evaporation in the high temperature regenerator 5, there is little foreign matter in the refrigerant liquid. As a result, as shown in FIG. 2, the rare water-absorbing liquid containing a large amount of dirt hardly flows into the can 45, so that the lock of the valve body 43 can be prevented, and as a result, appropriately at low load. The rare absorbent liquid can be distributed, and further, stable low load performance can be realized. In addition, in this embodiment, the pressure of the refrigerant pipe 31 is applied to the 1st supply pipe 261 and the 2nd supply pipe 49, and the pressure loss is the clearance gap (delta) between the valve body 41 and the valve shaft 44. Since the side of the second supply pipe 49 is higher than), the rare water absorbing liquid in the can 45 is discharged from the gap δ between the valve body 41 and the valve shaft 44 to the valve body 41.

As described above, according to the present embodiment, the refrigerant pipe 31 is connected to the condenser 7 from the high temperature regenerator 5, and the first supply pipe 461 is connected to the refrigerant pipe 31. The solenoid valve 462 was provided in the 1st supply pipe 461, and the solenoid valve 462 was opened regularly. For this reason, the coolant liquid is regularly supplied from the coolant pipe 31 to the can 45, and the rare water absorbing liquid containing foreign matter is prevented from flowing into the can 45, thereby preventing the locking of the valve body 43. Can be. As a result, the rare water absorbing liquid can be appropriately distributed at low load, and further stable low load performance can be realized.

In the present embodiment, the solenoid valve 462 has been opened for a predetermined time (preparation, about 1 minute) when the cooling load of the absorption chiller 400 is 80% or more, but the present invention is not limited thereto. The predetermined time may be opened for each predetermined operation time of 400.

[Fifth Embodiment]

Next, 5th Embodiment is described.

9 is a schematic configuration diagram of an absorption chiller 500 according to a fifth embodiment. Since the absorption chiller 500 is configured in the same manner as the absorption chiller 100 according to the first embodiment, in addition to having the lock prevention mechanism 560 in place of the lock prevention mechanism 60 (FIG. 1), In FIG. 9, the same code | symbol is attached | subjected to the same part as the absorption type refrigerator 100 shown in FIG. 1, and description is abbreviate | omitted.

The lock preventing mechanism 560 includes a first supply pipe 561 for supplying the coolant liquid to the rare water liquid distribution valve 40, a solenoid valve 562 provided in the middle of the first supply pipe 561, and a refrigerant for storing the coolant liquid. A liquid tank (liquid source) 563 is provided. One end of the first supply pipe 561 is welded to the fourth rare water absorption pipe 21D and connected to the second supply pipe 49 (FIG. 2) similarly to the first supply pipe 61 of the first embodiment. The other end of the first supply pipe 561 is welded to the refrigerant liquid tank 563. The 1st supply pipe 561 and the 2nd supply pipe 49 comprise the supply pipe of this embodiment.

The solenoid valve 562 is opened and closed by the control of the control device 50. The coolant liquid tank 563 contains a coolant liquid containing no foreign matter or contains a small amount of foreign matter, and is disposed at a position higher than the rare water absorbing liquid distribution valve 40.

In the lock preventing mechanism 560 configured as described above, the solenoid valve 562 is regularly opened, for example, for a predetermined time (for example, about 1 minute) at the start of operation of the absorption chiller 500. Accordingly, due to the difference in height between the refrigerant liquid tank 563 and the rare water absorbing liquid distribution valve 40, the refrigerant liquid having less foreign matter from the refrigerant liquid tank 563 to the rare water absorbing liquid distribution valve 40 through the first supply pipe 561. This is supplied regularly. As a result, as shown in FIG. 2, the rare water-absorbing liquid containing a large amount of foreign matter becomes difficult to flow into the can 45, so that the lock of the valve body 43 can be prevented, and as a result, appropriately at low load. The rare absorbent liquid can be distributed, and further, stable low load performance can be realized. In the present embodiment, the first supply pipe 561 and the second supply pipe 49 are subjected to pressure due to the difference in height between the refrigerant liquid tank 563 and the rare water absorbing liquid distribution valve 40, and the pressure loss is caused by the valve body. Since the side of the second supply pipe 49 is higher than the clearance δ between the valve 41 and the valve shaft 44, the rare water absorbing liquid in the can 45 is formed by the clearance between the valve body 41 and the valve shaft 44. is discharged from the valve body 41 to the valve body 41.

As described above, according to this embodiment, the refrigerant liquid tank 563 for storing the refrigerant liquid is connected to the first supply pipe 561, and the solenoid valve 562 is provided in the first supply pipe 561. The solenoid valve 562 was opened regularly. For this reason, the coolant liquid is regularly supplied from the coolant liquid tank 563 to the can 45, and the rare absorbent liquid containing the foreign matter is prevented from flowing into the can 45, thereby preventing the locking of the valve body 43. can do. As a result, the rare water absorbing liquid can be appropriately distributed at low load, and further stable low load performance can be realized.

In the present embodiment, the solenoid valve 562 has been opened for a predetermined time (for example, about 1 minute) at the start of operation of the absorption chiller 500. However, the solenoid valve 562 is not limited thereto. The predetermined time may be opened for each predetermined operation time of 500).

In addition, in this embodiment, although the refrigerant liquid tank was provided separately, the refrigerant liquid tank (liquid source) may be 7 A of refrigerant liquid reservoirs of the condenser 7 arrange | positioned higher than the rare water absorption liquid distribution valve 40. As shown in FIG.

However, the said embodiment is a kind of this invention, and of course, can change suitably in the range which does not deviate from the meaning of this invention.

For example, in the above embodiment, the rare water absorbing liquid distribution valve 40 is provided in the fourth rare water absorbing liquid pipe 21D connected to the low temperature regenerator 6, but the third rare water absorbing liquid pipe connected to the high temperature regenerator 5 is provided. You may be provided in 21C.

Moreover, although the said embodiment demonstrated the structure provided with the gas burner 4 which burns fuel gas and heats it as a heating means for heating an absorption liquid with the high temperature regenerator 5, It is not limited to this, Kerosene or A structure may be provided with a burner for burning A heavy oil, or may be configured to heat using heat such as steam or exhaust gas.

In the above embodiment, the absorption type cold and hot water heater is a dual-use type, but the single-effect type, and the present invention can be applied to the absorption type water heater and the absorption heat pump apparatus of the double-use type and triple-use type. Of course.

1 evaporator 1B refrigerant liquid reservoir
1C Disperser 2 Absorber
5 High Temperature Regenerator 6 Low Temperature Regenerator
7 Condenser 7A Refrigerant reservoir (Refrigerant tank, liquid source)
21 Rare Absorption Pipe (Liquid Source) 21C Third Rare Absorption Pipe (Pipe)
21D 4th Absorption Liquid Pipe (Pipe) 31 Refrigerant Pipe (High Temperature Regenerator Coolant Pipe, Liquid Source)
34 Refrigerant line (evaporator refrigerant line, liquid source)
40 Rare Absorption Liquid Distributing Valve 41 Valve Body (Pipe)
42 Seat (Valve seat) 43 Valve body
44 valve shaft 45 can (valve drive part)
49 Second Supply Line (Supply Line) 50 Control System
60, 260, 360, 460, 560 antilock mechanism
61, 261, 361, 461, 561 First supply pipe (supply pipe)
62, 262 Rare Absorption Tank (Liquid Source)
65, 265 Magnetic member (foreign substance removal means)
100, 200, 300, 400, 500 absorption chiller
141 Valve shaft penetration 362, 462, 562 Solenoid valve
563 Refrigerant liquid tank (liquid source) P1 rare absorbent pump (absorbent pump)
P3 refrigerant pump δ clearance

Claims (9)

In addition to attaching the valve driving portion externally to the piping through which the liquid flows, the valve shaft constituting the valve driving portion extends in the piping, and the valve seat is provided in the piping to which the valve body provided at the tip of the valve shaft abuts. Therefore, the intrusion of liquid into the valve driving portion is allowed through the gap between the valve shaft penetrating portion of the pipe, and the same liquid source as the liquid in the valve driving portion has a flow path area larger than the gap between the valve shaft penetrating portion of the pipe. A valve device characterized in that connected via a supply pipe. The method according to claim 1,
And the supply pipe extends in the pipe and is connected to the liquid source. A high temperature regenerator, a low temperature regenerator, a condenser, an evaporator, and an absorber, which are connected to each other to form circulation paths of the absorbent liquid and the refrigerant, respectively, and the absorption chiller that branches and flows the rare absorbent liquid into the high temperature regenerator and the low temperature regenerator. In
The valve seat is externally attached to the pipe for distributing the rare water absorbing liquid to the high temperature regenerator and the low temperature regenerator, the valve shaft constituting the valve driving part is extended in the pipe, and the valve seat which the valve body provided at the tip of the valve shaft is in contact with the pipe. The inside of the valve driving portion is allowed to penetrate into the valve driving portion through a gap between the valve shaft penetrating portion of the pipe in accordance with the operation of the valve shaft. An absorption chiller characterized in that it is connected through a supply pipe having a flow path area larger than the clearance of the shaft through portion. The method according to claim 3,
The liquid source is an absorption chiller, characterized in that for supplying the absorbent liquid or the refrigerant liquid with less foreign matter into the valve drive unit. The method according to claim 3,
The liquid source includes a rare absorbent liquid tank for storing the rare absorbent liquid, and the foreign matter removing means for removing the foreign matter in the rare absorbent liquid is disposed in the rare absorbent liquid tank.
Introducing the rare absorbent liquid discharged from the valve driving unit into the rare absorbent tank when the valve body is closed to remove foreign substances, and introducing the rare absorbent liquid in the rare absorbent liquid tank into the valve driving unit when the valve body is opened. Absorption refrigerator characterized in that. The method according to claim 3,
A rare absorbent liquid pipe for supplying a rare absorbent liquid from the absorber to the high temperature regenerator and the low temperature regenerator, and an absorbent liquid pump provided in the rare absorbent liquid pipe,
The supply pipe is connected to the rare absorbing liquid pipe, a rare absorbing liquid tank for storing the rare absorbing liquid is provided in the supply pipe, and the foreign material removing means for removing the foreign matter in the rare absorbing liquid is disposed in the rare absorbing liquid tank. Absorption Chiller. The method according to claim 3,
An evaporator refrigerant pipe connected to the diffuser of the evaporator from the refrigerant liquid reservoir of the evaporator, and a refrigerant pump provided in the evaporator refrigerant pipe,
Connecting the supply pipe to the evaporator refrigerant pipe, and providing a solenoid valve in the supply pipe,
Absorption freezer, characterized in that for opening the solenoid valve regularly. The method according to claim 3,
A high temperature regenerator refrigerant pipe connected to the condenser from the high temperature regenerator,
Connecting the supply pipe to the high temperature regenerator refrigerant pipe, and providing a solenoid valve in the supply pipe,
Absorption freezer, characterized in that for opening the solenoid valve regularly. The method according to claim 3,
Connecting a refrigerant liquid tank for storing refrigerant liquid to the supply pipe, and providing a solenoid valve in the supply pipe,
Absorption freezer, characterized in that for opening the solenoid valve regularly.

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