JPS63176958A - Double effect air-cooling absorption type air conditioner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a dual-effect air-cooled absorption type air conditioner, and particularly to a dual-effect air-cooled absorption type air conditioner suitable for miniaturization and wall-through packaging. This relates to a type air conditioner.

[Conventional technology]

Conventionally, the water-cooled two-wheel effect absorption chiller that has been widely used has the problem of high costs for installation, maintenance, and water management of the cooling water system, including the cooling tower. Development of the machine progressed rapidly.

Therefore, an air-cooled absorption water chiller using water as a refrigerant and lithium bromide as an absorbent was developed, for example, in JP-A-61-4.
The technology described in Publication No. 9970 was developed.

The absorber and condenser are cooled by airflow from a fan, and a structure in which fins are provided outside the vertical tube is used.

[Problem that the invention seeks to solve]

When installing air-cooled absorbers and condensers, air-cooled absorbers and condensers use the sensible heat of the outside air to cool the air, so it is necessary to flow several times the amount of cooling water compared to the cooling tower. It is necessary to ensure the air-cooled heat transfer LIO product between the absorber and the air-cooled condenser, and to consider the cooling air volume of the fan to 1 minute.

Furthermore, in order to apply the evaporator section to a package air conditioner as a heat exchange section between liquid refrigerant and air, there are problems in terms of efficiency and occupied space.

The present invention has been made in order to solve the problems of the prior art described above, and includes a direct expansion type evaporator placed indoors.

By compactly placing the air-cooled absorber and air-cooled condenser outside the room and creating a wall-through package,
Our aim is to provide a single-effect air-cooled absorption air conditioner that is compact and can be installed using oil channels.

[Means for solving problems]

In order to achieve the above object, the configuration of the dual effect air-cooled absorption air conditioner according to the present invention includes an evaporator, an absorber, a condenser,
The absorber, i
A dual-effect air-cooled absorption air conditioner equipped with a fan for air-cooling a condenser, the evaporator being arranged indoors so that heat exchange between the liquid refrigerant and the air is performed by the fan, This indoor side is separated from the outdoor side where other equipment is installed via a heat insulating member.

In addition, in item 11, in a dual-effect air-cooled absorption refrigerator that uses water as a refrigerant and lithium bromide as an absorbent, a direct expansion evaporator is installed indoors and integrated with the evaporator. This is achieved by compactly installing an air-cooled absorber and other cycle equipment on the outdoor side, and provides an all-through package air conditioner that partitions the indoor side and the outdoor side with a heat insulating member.

[Effect]

In a single-effect air-cooled absorption refrigerator that uses water as a refrigerant and lithium bromide as an absorbent, the liquid refrigerant is sent to a direct expansion evaporator by a refrigerant pump, where it is heated by air and vaporized, releasing indoor air. Cool down.

The vaporized vapor flows into an air-cooled absorber adjacent to the evaporator where it is absorbed.

This cycle can be made compact by adopting a so-called wall-through system, in which the inlet and outlet of cold air for air conditioning and the air inlet and outlet for cooling the absorber and condenser are arranged at symmetrical positions on the front and back or left and right sides of the device. It is possible to realize a dual-effect air-cooled absorption air conditioner in which the auxiliary equipment is simplified.

〔Example〕

Hereinafter, one embodiment of the present invention will be explained with reference to the present invention.

Figure+nIL is a cycle system diagram of a dual-effect air-cooled absorption type package air conditioner according to an embodiment of the present invention.

In the figure, τ,1 is an evaporator, and this evaporator 1 is a vertical pipe 1
Heat transfer fins 1b are formed outside the tube a, and the vertical tube 1a
An upper header lc whose part communicates integrally with the steam passage 5
, a refrigerant tank 1d is provided at the top of a vertical pipe 1a, and a fan 20 exchanges heat with indoor air to vaporize the refrigerant liquid (water) in the pipe. This is a so-called direct expansion type evaporator.

2 is a refrigerant pump, 3 is a refrigerant liquid pipe, and heat transfer fins 3a are formed outside the pipe.

Evaporator 1. Refrigerant pump 2. The refrigerant liquid pipe 3 is arranged on the indoor side as shown in FIG. 1, and heat exchange between the liquid refrigerant and the air is performed by blowing air from the fan 20 on the indoor side. The arrows in the figure indicate the direction of air flow.

4 is an air-cooled absorber, and this air-cooled absorber 4 has cooling fins 4b formed outside the vertical pipe 4a.
A part of the header, vertical pipe 4 by steam passage 5
This configuration includes an upper header 4C on the upper part of a.

6 is a solution pump, 7 is a solution heat exchanger, 10 is a high 1llll
The regenerator 11 is a low humidity regenerator.

15 is an air-cooled condenser, and this air-cooled condenser 15 is connected to the vertical pipe 1.
Cooling fins 15b are formed outside the tube 5a, and vertically
The upper part of the fi5a has an upper header formed by the steam passage 14, and an upper header 15c above the vertical pipe 15a.

The air-cooled absorber 4 and the air-cooled condenser 15 are air-cooled by the flow of outdoor air from an outdoor fan 21.
The arrows in the figure indicate the direction of air flow.

As shown in the figure, equipment 8 around the evaporator 1: + other equipment excluding piping, that is, an air-cooled absorber 4. Solution pump 6
, solution heat exchanger7. High temperature regenerator 10° low humidity regenerator 11.
Air cooled condenser 15. And the piping that connects these devices is arranged on the outdoor side in a compact manner.

22 is a heat insulating member that partitions the indoor side and the outdoor side, and is, for example, a heat insulating wall.

Next, the basic cycle operation of the dual-effect air-cooled absorption package air conditioner with such a configuration will be explained.

The refrigerant liquid (water) in the refrigerant tank ld of the evaporator 1 is distributed from the upper header 1c via the refrigerant liquid pipe 3 by the refrigerant pump 2, and is sent by the fan 20 while being circulated through the vertical pipe 1a. It exchanges heat with the indoor air and vaporizes, cooling the indoor air at that time.

The vaporized refrigerant flows into the air-cooled absorber 4 through the vapor passage 5. The air-cooled absorber 4 is directly cooled by outside air by a fan 21, and the vaporized refrigerant is absorbed into a concentrated lithium bromide solution that is sprayed from the upper header and flows into the vertical pipe 4a to become a dilute solution.

This dilute solution is pumped out by a solution pump 6, passes through a solution heat exchanger 1, and passes through dilute solution tubes 8, 9 to a high temperature regenerator 10. It is sent to the low temperature regenerator 11.

An external heat source 12 is supplied to the high temperature regenerator 10, and the furnace 10a
The heat generated during combustion concentrates the dilute solution, producing steam. This generated refrigerant vapor is transferred to the refrigerant pipe 1
The dilute solution in the low temperature regenerator 11 is heated and concentrated through the heat transfer tube section 13a of No. 3, and the refrigerant itself is condensed and liquefied to become a liquid refrigerant, which is sent to the upper header L5c of the air-cooled condenser 15.

Steam generated from the concentrated dilute solution in the low temperature regenerator 11 passes through the steam passage 14 to the vertical pipe 15a of the air-cooled condenser L5.
Here, it is also cooled by the outside air by the fan 21 and becomes a liquid refrigerant, which flows from the upper header L5c to the refrigerant pipe 1.
6 and returns to the refrigerant tank 1d of the evaporator 1.

High humidity regenerator 10. The solutions concentrated in the low-temperature regenerator 11 are sent to the upper header of the air-cooled absorber 4 via the concentrated solution pipe 19 after passing through the solution heat exchanger 7 through the 'a solution pipes 17 and 18, where they are dispersed and absorbed again. The process is repeated.

At this point, the cycle has completed one cycle, and during this cycle action, a heat insulating member 222, for example a heat insulating wall, partitions the indoor side and the outdoor side.

According to this embodiment, a wall-through type dual-effect air-cooled absorption package air conditioner is realized, which has the advantage of being smaller in size and easier to install.

In addition, in the above-mentioned embodiment, an example of a package air conditioner was explained, but the present invention is generally applicable to a dual-effect air-cooled absorption type air conditioner within the range where similar effects are expected. .

〔Effect of the invention〕

As described above, according to the present invention, the direct expansion evaporator is arranged indoors, and the air-cooled absorber and air-cooled condenser are compactly arranged outdoors, forming a wall-through package. It is possible to provide a dual-effect air-cooled absorption air conditioner that achieves simplified construction.

[Brief explanation of the drawing]

H+fu is a cycle system diagram of a two-wheel effect air-cooled absorption type package air conditioner according to an embodiment of the present invention. 1... Evaporator, 4... Air-cooled absorber, 7... Solution heat exchanger. 10...High temperature regenerator, 11...Low humidity regenerator, 15.
...Air-cooled condenser, 20.21...Fan, 22...
Insulation material.

Claims (1)

[Claims] 1. It consists of an evaporator, an absorber, a condenser, a low-temperature regenerator, a high-temperature regenerator, a solution heat exchanger, and a piping system that operatively connects these devices, and includes a fan for air-cooling the absorber and condenser. A dual-effect air-cooled absorption air conditioner equipped with
The evaporator is arranged on the indoor side so that heat exchange between the liquid refrigerant and the air is performed by a fan, and this indoor side is separated from the outdoor side where other equipment is arranged via a heat insulating member. A dual-effect air-cooled absorption air conditioner characterized by the following configuration.