JPS6020670B2 - absorption refrigerator - Google Patents

Description

[Detailed Description of the Invention] This invention provides a high temperature regenerator, a low temperature regenerator, a condenser, an evaporator,
This invention relates to an absorption refrigerator equipped with an absorber, a heat exchanger, a cold soot circulation pump, and a solution pump.

There are two ways to configure the heating cycle in a dual-effect refrigerator: one that uses a flooder and the other that uses a condenser.

For those that use a water heater, the block is divided into two blocks: a high-temperature regenerator, water heater block, and a condenser, low-temperature regenerator, and absorber block, but even if the pressure difference between the two blocks is lk9/kg, they are still in the same shell. There is no problem because it is not divided into two. In addition, even if the condenser is used as a water heater, there is no problem if you use the entire refrigerator as it is without separating it into two blocks, or if you use the method of using the entire refrigerator as is, even if it is separated into two blocks, the evaporator and absorber There is no problem if a twin shell type is adopted in which a low temperature regenerator and a condenser are constructed in each shell.
However, if you adopt a heating cycle in which the condenser, low-temperature regenerator, evaporator, and absorber are housed in the same shell and separated into two blocks, the condenser and low-temperature regenerator block and the evaporator and absorber block can be used. are divided into two parts within the same shell, and the partition plate inside the shell that separates each must be able to withstand a pressure difference of at least lk9/ground in the event of an abnormality, which makes the structure extremely limited and the inside of the shell This has not been implemented due to restrictions on the structure and placement of the

An object of the present invention is to adopt an AAA shell, and to prevent a pressure difference exceeding a predetermined pressure difference from occurring during a heating cycle, a condenser, a low-temperature regenerator, an evaporator, and an absorber are installed in the shell. An object of the present invention is to provide an absorption refrigerator capable of protecting partitioning partition plates.

First, an example of a dual-effect absorption refrigerator according to the present invention will be explained with reference to FIG.

The refrigerator has a high temperature regenerator 1, a low temperature regenerator 2, a condenser 3, an evaporator 4, an absorber 5, a heat exchanger 6, a soot circulation pump 7, and a solution circulation pump 8 as main components. Each device has valves 9, 10, 11, 12, 13,
It is suspended by piping with 14 attached.

The low-temperature regenerator 2 and the condenser 3 are housed in one part of the same shell divided by a partition wall 17, and the evaporator 4 and the absorber 5 are housed in the other part. During the heating cycle, each valve 9, 10, 11, 12, 13, 14 is shut off.

The solution heated by a heat source 15 such as city gas or kerosene is separated into a refrigerant in the high-temperature regenerator 1, and the separated refrigerant passes through the pipes of the low-temperature regenerator 2, which heats the solution outside the pipe. It returns to the high temperature regenerator 1. On the other hand, the solution outside the tube of the low temperature regenerator 2 is heated to separate the soot, and the separated cold soot acts as a heating source for the hot water 16 passing through the tube in the condenser 3, and is condensed. The generated soot returns to the low-temperature regenerator 2. In this way, a heating cycle is formed. In this heating cycle, the evaporator 4 and absorber 5 on the low-temperature side are connected to the T-valves 10 to 13 and the partition wall 17 in the shell. It is separated from the high temperature side.

During normal operation, the low temperature side is maintained at a high vacuum, and the pressure in the low temperature regenerator 2 and condenser 3, which are separated by the partition wall IT, is 2.
Therefore, the differential pressure across the partition wall 17 is about 20 Hga, but if an abnormality occurs in the operation, the pressure in the low-temperature regenerator 2 and the condenser 3 will be lower than that in the high-temperature regenerator 1. or, if a leak occurs with the outside, the pressure increases to atmospheric pressure. The differential pressure across the partition wall 17 at that time is lk9/
As a result, the partition wall 17 may be deformed or damaged. A feature of this invention is that a safety device is installed between the high temperature side block and the low temperature side block to allow the blocks to pass through each other when the pressure difference between the blocks exceeds a predetermined value. Next, one embodiment of the present invention will be explained with reference to FIG.

The trap 23A and the trap 238 are connected via a U-seal tube 21 containing a sealing liquid 22 such as mercury.

Trap 23A is connecting pipe 26A with valve 27A attached.
The trap 238 is connected to the high temperature side communication pipe 29 via a communication pipe 26B to which a valve 27B is attached. Trap 23A,
A drain outlet with plugs 24A and 24B attached thereto is provided at the bottom of the trap 23B, and a U-seal liquid inlet with a plug 25 attached is provided at the top of the trap 26B. When a predetermined pressure difference occurs between the blocks on the high temperature side and the low temperature side as described above, the sealing liquid 22 flows into the trap 2.
3A, and the high temperature side and the low temperature side communicate with each other.

In addition, it is possible to install a rupture disk between the high temperature side and the low temperature side, operate an electric valve via a pressure switch that detects the pressure between the high temperature side and the low temperature side, or configure a U-seal with a solution. A similar effect can be obtained by doing so.

As explained above, according to the present invention, it is possible to protect the refrigerator from the occurrence of a pressure difference exceeding a predetermined pressure difference during the heating cycle, and it is necessary to make the partition wall in the shell a pressure-resistant structure. There are no restrictions on placement and configuration within the shell.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing an example of a dual-effect absorption refrigerator according to the present invention, and FIG. 2 is a sectional view showing an embodiment of the present invention. 1...High temperature regenerator, 2...Low temperature regenerator, 3...
Condenser, 4...Evaporator, 5...Absorber, 6...
... Heat exchanger, 7 ... Medium circulation pump, 8 ... Solution circulation pump, 9 to 14 ... Valve, 17 ... Separation, 21 ... U seal pipe, 22 ... ...U seal liquid ~ 2
3A, 23B...U seal liquid trap 24A, 2
4B...Drain outlet plug, 25...U seal liquid inlet plug, 26A, 26B...Connection pipe, 2
7A, 278... Valve, 28... Low temperature side communication pipe, 29... High temperature side communication pipe. Favorite prisoner fin Z diagram

Claims (1)

[Claims] 1 Equipped with a high-temperature regenerator, a low-temperature regenerator, a condenser, an evaporator, a heat exchanger, a refrigerant pump, and a solution pump, and consists of a high-temperature block consisting of a high-temperature regenerator, a low-temperature regenerator, and a condenser, an absorber, and an evaporator. In an absorption chiller, the heating cycle is constructed with the high temperature block separated from the low temperature block.
An absorption chiller characterized in that a safety device is installed between the high-temperature side block and the low-temperature side block to connect the two blocks to each other when the pressure difference between the two blocks exceeds a predetermined value.