KR19990056521A - Non-Condensing Gas Discharge Device for Absorption Cooler - Google Patents

Abstract

The present invention relates to a non-condensing gas discharge device of the absorption chiller. The present invention includes a space tank into which the refrigerant vapor and the non-condensable gas are introduced, and a bleeding tank divided into a low chamber through which the absorbing liquid is injected; In the non-condensing gas discharge device of the absorption type hot and cold water heater having a space portion and the bottom chamber of the bleeding tank and the vacuum pump connected by the first and second pipes, the second pipe phase connecting the squeezed tank and the vacuum chamber A solenoid valve installed in the chamber, a pressure detector installed at one side of the bottom chamber of the bleeding tank, and detecting a pressure inside the chamber, and electrically connected to the solenoid valve, the pressure detector, and the vacuum pump to a pressure value detected by the pressure detector. Accordingly, there is provided a controller for automatically controlling the solenoid valve and the vacuum pump. Therefore, the performance of the cold and hot water heater can be prevented from being deteriorated due to the decrease in the degree of vacuum due to the immaturity of the driver's operation, which was generated by the method of manually discharging the non-condensable gas, and the driver does not have to check the pressure in the low room at any time. It provides the effect that can utilize the surplus time of

Description

Non-Condensing Gas Discharge Device for Absorption Cooler

The present invention relates to an absorption system for cooling and heating, and more particularly, to an apparatus for discharging a non-combustible gas of an absorption type cold / hot water machine to discharge the non-condensable gas generated in the cabin to the outside.

Generally, the absorption type cold and hot water machine uses a mixture of lithium bromide (LiBr), which is an absorbent, and water, which is a refrigerant, that is, a dilution solution.

In order to reduce leakage from the outside, such absorption type cold and hot water machines are making efforts to suppress leakage by welding flange joints, screw joints, etc., and deleting the viewing window for observation of the state of the aircraft. Leak test using the test does not allow even minute leakage.

However, during the operation of the absorption type cold and hot water heater, a protective film is formed on the surface of the steel sheet by the corrosion inhibitor encapsulated with the lithium bromide aqueous solution. At this time, hydrogen gas, that is, non-condensing gas is generated.

And when the non-condensed gas is present in the aircraft has a great effect on the performance of the cold and hot water machine, the non-condensable gas is discharged to the outside through the non-condensable gas discharge device.

FIG. 1 schematically illustrates a conventional unfolded gas discharge device of an absorption type hot and cold water heater, and the bleeding tank 10 is divided into a reservoir 11 and a space 12, and the reservoir 11 is a solution pump 5. It is connected to one end of the pipe and a part of the absorbing liquid is to be injected to the low chamber 11 side by the discharge pressure of the solution pump (5).

In addition, the lower end of the lower chamber 11 and the absorber 2 are connected by pipes, and the absorbent liquid is discharged back to the absorber 2 by the amount of the absorbed liquid introduced into the lower chamber 11 by the solution pump 5 to store the lower chamber 11. An appropriate level of absorbent liquid is maintained in the chamber.

In addition, the space part 12 of the bleeding tank 10 is connected to the low temperature regenerator 4 and the evaporator 1 in which non-condensable gas is generated, and is connected with the refrigerant steam generated in the low temperature regenerator 4 and the evaporator 1. The condensed gas is introduced into the space 12 of the bleeding tank 10.

The refrigerant vapor and the non-condensable gas that enter the space 12 are induced by a negative pressure formed around the absorbed liquid to be injected and are brought into contact with the absorbed liquid stored in the low chamber 11, whereby the refrigerant vapor is absorbed by the absorbed liquid and the non-condensed gas bubbles in the absorbed liquid. It is present in the state as it rises above the water and gathers on the upper chamber 11.

And the space part 12 and the upper part of the low chamber 11 are connected with the vacuum pump 20 by the 1st, 2nd piping 13, 14, and the 1st, 2nd piping 13, 14 The first valve 16 and the second valve 17 are provided in the pipe line between the first valve 16 and the second valve 17 and the vacuum pump 20. The vacuum solenoid valve 21 is provided. And the vacuum solenoid valve 21 is installed to open automatically by the operation of the vacuum pump (20).

The non-condensing gas discharging device of the conventional absorption type cold and hot water heater configured as described above introduces refrigerant vapor and non-condensing gas generated in the low temperature regenerator (4) and the evaporator (1) into the extraction tank (10) and stores the low chamber (11) of the extraction tank (10). By contacting with the absorbent liquid stored in the) to absorb the refrigerant vapor in the absorbent liquid and to discharge only the non-condensable gas through the vacuum pump 20 to the outside.

However, the non-condensing gas discharge device of the conventional absorption type cold and hot water heater configured as described above, after the driver grasps the degree of vacuum inside the bleeding tank through the vacuum pressure sensor 18, manually opens the second valve 17 connected to the upper part of the reservoir 11. Since the non-condensable gas inside the bleeding tank 10 is discharged to the outside by operating the vacuum pump 20, there is a problem that the driver must check the state of the vacuum pressure sensor from time to time.

In addition, due to the immature valve operation of the driver, that is, when the opening and closing of the second valve 17 is not performed properly, there is a problem that the vacuum degree is lowered, thereby degrading the performance of the cold and hot water heater.

The present invention was created in order to solve such a conventional problem, the absorption type to automatically discharge the non-condensable gas in the chamber by detecting the pressure rise inside the bottom chamber of the extraction tank due to the inflow of non-condensable gas The purpose is to provide a non-condensable gas discharge device for cold and hot water.

In order to achieve the object as described above, the present invention includes a space tank into which the refrigerant vapor and the non-condensable gas flows, and a bleeding tank divided into a low chamber into which the absorbing liquid is injected; In the non-condensing gas discharge device of the absorption type hot and cold water heater having a vacuum pump connected by the space portion and the low chamber and the first and second pipe of the bleeding tank,

A solenoid valve installed on a second pipe connecting the low chamber of the bleeding tank and the vacuum pump, a pressure detector installed at one side of the low chamber of the bleeding tank to sense a pressure inside the low chamber, and the solenoid valve, the pressure detector, and the vacuum It provides a non-condensing gas discharge device of the absorption type hot and cold water heater, characterized in that it comprises a controller electrically connected to the pump to automatically control the solenoid valve and the vacuum pump according to the pressure value detected by the pressure detector. have.

1 is a schematic view showing a non-condensing gas discharge device of the conventional absorption chiller,

Figure 2 is a schematic diagram showing a non-condensing gas discharge device of the absorption chiller according to the present invention.

<Explanation of Signs of Major Parts of Drawings>

One ; Evaporator 2; Absorber

4 ; Low temperature regenerator 5; Solution pump

10; Extraction tank 11; Low room

12; Space 13,14; 1st, 2nd piping

20: vacuum pump 31; Solenoid valve

32; Pressure detector 40; Control

Hereinafter, the configuration and effect according to the preferred embodiment of the present invention will be described in detail with the accompanying drawings.

Figure 2 is a schematic diagram showing a non-condensing gas discharge device of the absorption chiller according to the present invention.

As shown in FIG. 2, the apparatus for discharging a non-condensable gas according to the present invention includes a space part 12 into which the refrigerant vapor generated from the low temperature regenerator 4 and the evaporator 1 and the non-condensable gas are introduced, and a solution pump ( And a bleeding tank 10 partitioned into a low chamber 11 into which the absorbing liquid is injected by 5).

In addition, the space 12 and the bottom chamber 11 of the bleeding tank 10 are connected to the vacuum pump 20 by the first pipe 13 and the second pipe 14, and a valve is provided on the first pipe 13. The vacuum solenoid valve 21 which is automatically opened by operation of the 16 and the vacuum pump 20 is provided, and the solenoid valve 31 is provided in the 2nd piping 14.

One side of the bottom chamber 11 of the bleeding tank 10 is provided with a pressure detector 32 for sensing the pressure inside the bottom chamber 11, and the solenoid valve 31 and the bottom chamber 11 installed in the second pipe 14. The pressure detector 32 and the vacuum pump 20 installed at one side of the control unit 40 are electrically connected to each other so that the solenoid valve 31 and the vacuum pump 20 are automatically opened and closed by the control unit 40. It is composed.

The non-condensing gas discharge device of the absorption chiller according to the present invention configured as described above is operated as follows.

First, the non-condensable gas and the refrigerant vapor generated from the low temperature regenerator 4 and the evaporator 1 flow into the space portion 12 of the bleeding tank 10, and the refrigerant vapor and non-condensed gas introduced into the space portion 12. The coolant vapor is introduced into the low chamber 11 by the negative pressure formed around the absorbent liquid injected into the low chamber 11 of the bleeding tank 10 by the solution pump 5 and comes into contact with the absorbent liquid stored in the low chamber 11. The non-condensable gas is bubbled in the absorbent liquid and then floats on the surface of the absorbent liquid and collects in the upper chamber 11.

In addition, the pressure inside the storage chamber 11 is increased due to the non-condensing gas collected in the upper chamber 11 of the bleeding tank 10, and the pressure detector 32 installed at one side of the storage chamber 11 is located inside the storage chamber 11. The pressure is detected, and the detected pressure is converted into an electrical signal and transmitted to the controller 40.

In addition, the controller 40 compares the pressure value detected by the pressure detector 32 with a preset pressure value and controls the start of the vacuum pump 20 and the opening and closing of the solenoid valve 31 according to the difference value.

That is, when the pressure in the low chamber 11 is larger than the preset pressure, the vacuum pump 20 is started, and the solenoid valve 31 is opened to discharge the non-condensable gas in the low chamber 11 to the outside of the air.

When the pressure in the low chamber 11 is lower than the preset pressure, the solenoid valve 31 is closed and the vacuum pump 20 is stopped to stop the discharge of the non-condensable gas inside the low chamber 11.

On the other hand, the start of the vacuum pump and the opening and closing of the solenoid valve may be controlled by time, that is, a method of closing the solenoid valve and stopping the vacuum pump after a predetermined time after the start of the vacuum pump may be used.

As described above, according to the non-condensing gas discharge device of the absorption type cold and hot water heater of the present invention, the non-condensing gas in the low chamber is automatically discharged to the outside in accordance with the increase in the pressure inside the bleeding tank. It is possible to prevent the deterioration of the performance of the cold / hot water machine due to the decrease in the degree of vacuum due to the inexperienced operation of the driver, which is generated by the discharge method, and also to utilize the surplus time of the driver because the driver does not have to check the pressure in the low room at any time. To provide.

Claims (1)

A bleeding tank partitioned into a space portion into which refrigerant vapor and non-condensable gas flow, and a low chamber into which absorbent liquid is injected; In the non-condensing gas discharge device of the absorption type hot and cold water heater having a vacuum pump connected by the space portion and the low chamber and the first and second pipe of the bleeding tank, A solenoid valve installed on a second pipe connecting the low chamber of the bleeding tank and the vacuum pump, a pressure detector installed at one side of the low chamber of the bleeding tank to sense a pressure inside the low chamber, and the solenoid valve, the pressure detector, and the vacuum And a controller electrically connected to a pump to automatically control the solenoid valve and the vacuum pump according to the pressure value detected by the pressure detector.