JPH0712433A - Absorption refrigeration equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a refrigerant tank in an absorption refrigeration system which is considered to favorably recover non-condensable gas. [Structure] In an absorption refrigeration system including a regenerator 1, a condenser 3, an evaporator 7, a solution tank 10, a bleeder 12, etc., a non-condensed gas for directly supplying the non-condensed gas of the condenser 3 to the evaporator 7 is used. The bleeder 1 is equipped with the condensing gas communication pipe 13 and does not collect the non-condensing gas generated in the regenerator 1 in the condenser 3.
It collects in 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorption type refrigerating apparatus comprising a regenerator, a condenser, an evaporator, an absorber, a bleeder, etc.

[0002]

2. Description of the Related Art In general, in an absorption refrigeration system including a regenerator, an absorber, a condenser, an evaporator, etc., which uses a gas combustion device as a heat source, a type using water as a refrigerant occupies the mainstream. In this case, the solution is heated and boiled in the regenerator to be divided into concentrated liquid and refrigerant vapor, and this refrigerant vapor flows to the condenser and is condensed in the condenser to become liquid refrigerant. Since nitrogen gas or hydrogen gas is contained, the non-condensable gas stays in the condenser inevitably. Conventionally,
As a means for extracting this kind of non-condensable gas, only the non-condensable gas accumulated in the solution tank has been collected by an extraction device connected to the solution tank located at the most downstream side of the refrigerant vapor.

[0003]

That is, although the non-condensable gas generated in the absorption refrigerating apparatus is mostly hydrogen gas generated from the regenerator, the non-condensable gas is liquid-sealed and the capillary tube is closed. It is blocked by and stays in the condenser because it is not supplied to the solution tank and the bleeder.
The extraction device for extracting the non-condensable gas, which is connected to the solution tank, has a drawback that the extraction effect cannot be sufficiently exhibited. In this way, if the extraction device does not exert the extraction effect,
There is a problem in that the degree of vacuum cannot be maintained, which leads to performance deterioration and eventually failure.

In view of the above situation, it is an object of the present invention to provide an absorption refrigerating apparatus that solves the above problems by directly guiding the non-condensable gas accumulated in the condenser to the evaporator. .

[0005]

According to the present invention, in an absorption refrigerating apparatus comprising a regenerator, a condenser, an evaporator, an absorber, a bleeder, etc., the non-condensed gas of the condenser is directly introduced to the evaporator. It is equipped with a non-condensable gas communication pipe.

[0006]

As described above, by providing the communication pipe for supplying the non-condensable gas from the condenser to the evaporator, the non-condensable gas accumulated in the condenser is supplied to the extraction device via the evaporator, the absorber and the solution tank. As a result, the effect of the air extraction device can be sufficiently exerted.

[0007]

The present invention will be described below with reference to the drawings of the embodiments.

FIG. 1 shows an absorption type refrigerating apparatus using gas combustion as a heat source. Reference numeral 1 denotes a regenerator having a cooling combustion apparatus 2 arranged at a lower portion thereof, and a condenser 3 communicating with an upper portion of the regenerator 1. , The tip of a capillary tube 4 serving as a refrigerant pipe connected to the lower header portion 3a of the condenser 3 is connected to a refrigerant tank 5, and the refrigerant liquid once accumulated in the refrigerant tank 5 is guided to an evaporator 7 by a refrigerant pump 6. Concentrated liquid pipe 9 separately provided from the regenerator 1 is connected to the absorber 8 connected to the evaporator 7 as a pipe.
And a dilute solution pipe 11 connected to a solution tank 10 for accumulating the dilute solution obtained in the absorber 8 is formed as a pipe for returning to the regenerator 1 to form a circulation path. Becomes In this case, a predetermined bleeder 12 is connected to the solution tank 10, and the tip of the non-condensable gas communication pipe 13 led out from the lower part of the condenser 3 is connected to the evaporator 7 to generate non-condensable gas on the condenser side. It will be used as a recovery route. 14 is a regenerator 1
Is a hot water heat exchanger provided with a heating combustion device 15 installed in the same room, and 16 is an indoor unit in which a cold water pipe 17 led from the evaporator 7 and a hot water pipe 17 'led from the hot water heat exchanger 14 are appropriately switched and connected. Is. 18 is a solution heat exchanger.

Explaining this action, first, in the cooling operation of the absorption refrigeration system which is an absorption refrigeration cycle, the solution in the regenerator 1 is boiled by heating the burner type combustion device 2 using gas combustion as a heat source. The concentrated liquid and the refrigerant vapor are separated, and the rising refrigerant vapor is introduced into the condenser 3 and condensed to be a liquid refrigerant. This liquid refrigerant passes through a capillary tube 4 and a refrigerant tank 5
The refrigerant liquid once flowing into the refrigerant tank 5 and once accumulated in the refrigerant tank 5 is fed through the refrigerant pump 6 to the refrigerant dispersion pipe 9 of the evaporator 7 and dispersed therein, and the latent heat of vaporization of the refrigerant liquid is utilized to make use of the heat transfer pipe portion for the cold water pipe. Is cooled, and this cold water is guided to the indoor unit 16 for cooling. On the other hand, the refrigerant vapor evaporated in the evaporator 7 is in communication with the absorber 8
Flowing into the absorber 8, the refrigerant vapor is sprayed to the absorber 8, is absorbed by the concentrated liquid dispersion pipe 20 introduced from the regenerator 1 into the concentrated liquid for dispersion, and is collected in the solution tank 10 as a dilute liquid. The dilute liquid is regenerated by the solution pump 21. Return to vessel 1 and circulate the solution.

In this case, in the regenerator 1, non-condensable gas such as hydrogen gas and nitrogen gas is generated when the solution is boiled, and the non-condensable gas is sent to the condenser 3 which is in communication. Since the side of the capillary tube 4 connected to the condenser 3 is closed by liquid sealing, the capillary tube 4 stays in the front portion of the capillary tube 4.

Here, the non-condensable gas accumulated in the lower part of the condenser 3 is sent to the evaporator 7 through the non-condensable gas communication pipe 13 due to the pressure difference, and communicates with the refrigerant vapor evaporated in the evaporator 7. To the absorber 8 and the solution tank 1 below it.
Carried to zero. The non-condensable gas accumulated in the solution tank 10 is connected to the solution tank 10 to extract the gas.
In the extraction device 12, the hydrogen content is discharged to the outside in the same manner as in a known process, and the other hydrogen content is stored in a tank (not shown) and taken out separately. That is, the non-condensable gas accumulated in the condenser 3 is the non-condensable gas communication pipe 13
Since it is conveyed from the evaporator 7 through the absorber 8 to the solution tank 10 equipped with the extraction device 12, the non-condensed gas generated on the regenerator side can also be collected in the extraction device 12.

As described above, the bleeding effect of the bleeding device 12 is sufficiently exerted, so that the degree of vacuum in the device can be maintained.

[0013]

As described above, in the absorption refrigeration system of the present invention, the non-condensable gas is directly supplied from the condenser to the evaporator. Therefore, the non-condensable gas generated from the regenerator is stored in the condenser. Instead, the air can be recovered by the air extraction device, the effect of the air extraction device can be sufficiently exhibited, and the non-condensable gas can be discharged to the outside of the device. Therefore, it is possible to maintain the degree of vacuum of the device and avoid performance deterioration.

[Brief description of drawings]

FIG. 1 is a schematic view of an absorption refrigeration system showing an embodiment of the present invention.

[Explanation of symbols]

 1 Regenerator 3 Condenser 4 Capillary Tube 7 Evaporator 8 Absorber 10 Solution Tank 12 Extractor 13 Noncondensable Gas Communication Pipe

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Tatsu Sugawara 2-18 Keihan Hondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Kazuya Sugiyama 2-chome Keihan Hondori, Moriguchi-shi, Osaka Sanyo Electric Machinery Co., Ltd. (72) Inventor Ikume Yonezo 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (1)

[Claims] 1. An absorption type refrigerating apparatus comprising a regenerator, a condenser, an evaporator, an absorber, a bleeder, etc., provided with a noncondensable gas communication pipe for directly guiding the noncondensable gas of the condenser to the evaporator. An absorption type refrigeration system characterized by the above.