JPH04157A - Absorption type air conditioning facility - 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 applications The present invention relates to absorption type heating and cooling equipment.

Conventional technology Conventionally, some air-conditioning and heating equipment is of the absorption type.

As shown in FIG. 2, this absorption type heating and cooling equipment was composed of an outdoor unit 1 and an indoor unit 2 that perform an absorption type refrigeration cycle, and was also equipped with a water heater 3. That is, this outdoor unit 1 includes an evaporator 11 that evaporates a refrigerant (for example, water), an absorber 12 that absorbs the refrigerant vapor evaporated by the evaporator 11 into an absorption liquid (for example, a lithium bromide aqueous solution), and A regenerator 13 that absorbs refrigerant vapor in the absorber 12 and heats the diluted absorption liquid, and a gas-liquid separator that separates the refrigerant vapor from the gas-liquid mixed liquid heated in the regenerator 13. 14, a condenser 15 for condensing the refrigerant vapor separated by the gas-liquid separator 14, and a concentrated absorption device for sending the concentrated absorption liquid, which is concentrated after the refrigerant vapor is separated by the gas-liquid separator 14, to the absorber 12. A liquid transfer pipe 16, a dilute absorption liquid transfer pipe 18 which has a solution pump 17 in the middle and sends the diluted absorption liquid in the absorber 12 to the regenerator 13, and a gas-liquid mixture heated in the regenerator 13. An absorbent liquid transfer pipe 19 is provided between the concentrated absorbent liquid transfer pipe 16 and the dilute absorbent liquid transfer pipe 18 to transfer the absorbent liquid to the gas-liquid separator 14, and is provided between the concentrated absorbent liquid transfer pipe 16 and the dilute absorbent liquid transfer pipe 18 to transfer the heat of the concentrated absorbent liquid to the gas-liquid separator 14. A heat transfer medium (for example, water) for exchanging heat between the indoor unit 2 and the heat exchanger 20 that recovers heat by giving it to the liquid is placed in a heat transfer tube (not shown) in the evaporator 11. A first heat transfer medium circulation transfer means 21 that circulates and transfers the heat transfer medium, and a second heat transfer medium that circulates and transfers the heat transfer medium into the regenerator 13 during heating operation.
It is composed of a heat transfer medium circulation transfer means 22. Further, the first heat transfer medium circulation transfer means 21 has a first three-way switching valve 31 interposed therebetween, and transfers the heat transfer medium to the indoor unit 2.
A first heat transfer medium transfer pipe 32 for transferring the heat transfer medium from the side to the heat transfer tube in the evaporator 11, a circulation pump 33 and an on-off valve 34 are interposed in the middle, and the heat transfer medium is transferred from the heat transfer tube to the indoor unit 2 side. The absorber 12 is bypassed by connecting the first heat transfer medium transfer pipe 32 and the second heat transfer medium transfer pipe 35 via the first three-way switching valve 31. It is composed of a bypass pipe 36. Furthermore, the second heat transfer medium circulation transfer means 22 includes first and second three-way switching valves that are interposed on the absorption liquid inlet/outlet side of the regenerator 13, that is, in the middle of the diluted absorption liquid transfer pipe 18 and in the middle of the absorption liquid transfer pipe 19. 37.
38, a third heat transfer medium transfer pipe 39 that connects the first three-way switching valve 37 and the middle of the upstream side of the on-off valve 34 of the second heat transfer medium transfer pipe 35, and a third heat transfer medium transfer pipe 39 that connects the second three-way switching valve 38 and the A fourth heat transfer medium transfer pipe 40 connects the second heat transfer medium transfer pipe 35 to the middle of the downstream side of the on-off valve 34.

In the above configuration, during cooling operation, each three-way switching valve 31
, 37, 38 and the on-off valve 34, the heat transfer medium and the refrigerant flow in the direction of arrow A, and the refrigeration cycle is operated on the outdoor unit 1 side to cool the heat transfer medium.

On the other hand, during heating operation, each three-way switching valve 31, 37, 38
and the on-off valve 34, the heat transfer medium and the refrigerant are
at least the regenerator 1.
3, the heat transfer medium is heated and the heat on the outdoor unit 1 side is used as a heat source during heating operation. Note that the water heater 3 provided next to the water heater was not particularly used as a heat source for heating and cooling.

Problems to be Solved by the Invention According to the above-mentioned conventional configuration, two three-way switching valves 37 and 38 are arranged at the entrance and exit of the regenerator 13, but at least the three-way switching valve 38 on the outlet side is not connected to the high temperature absorption liquid. Because of the contact, the materials used were of high quality. Additionally, since this piping system is operated in an operating environment below atmospheric pressure, the structure of the three-way switching valve also uses a vacuum specification.
The problem was that the overall cost was very high.

Therefore, an object of the present invention is to provide an absorption type heating and cooling equipment that can solve the above problems.

Means for Solving the Problems In order to solve the above problems, the absorption type heating and cooling equipment of the present invention is an absorption type heating and cooling system that includes an outdoor unit having an evaporator, an absorber, a regenerator, and a condenser, an indoor unit, and a water heater. In the equipment, a heat transfer medium circulation pipe is provided which has a first circulation pump in the middle and circulates the heat transfer medium between the indoor unit and the evaporator, has an on-off valve and a second circulation pump in the middle, and has the above-mentioned A water heater equipped with a hot water circulation pipe that connects the water supply pipe and the hot water supply pipe midway, and a heat exchanger that exchanges heat between the heat transfer medium circulation pipe and the hot water circulation pipe. It is.

Effect According to the above configuration, during heating operation, the heat of the high-temperature water flowing in the hot water circulation pipe is applied to the heat transfer medium flowing in the heat transfer medium circulation pipe through the heat exchanger. The heat from the indoor unit can be used as a heat source for the indoor unit.

Example An embodiment of the present invention will be described below with reference to FIG.

The absorption heating and cooling equipment in this embodiment is composed of an outdoor unit 1 that performs an absorption refrigeration cycle, an indoor unit 2, and is equipped with a water heater 3.

By the way, the gist of the present invention is to use the heat on the water heater 3 side as a heat source during heating operation, so in this embodiment, only this part will be explained, and other configurations, that is, the outdoor unit Since most of the configuration of Embodiment 1 is the same as that of the conventional example, the same parts are given the same numbers and their explanations will be omitted.

That is, the outlet side of the heat exchange section 2a on the indoor unit 2 side and the inlet side of the heat transfer tube in the evaporator 11 on the outdoor unit 1 side are connected by the first heat transfer medium circulation transfer pipe 51, and the The heat exchange section 2a between the outlet side of the heat transfer tube in the evaporator 11 and the indoor unit 2 side
The inlet side of the second circulation pump 52 having the first circulation pump 52 in the middle is the inlet side of the second circulation pump 52.
They are connected by a heat transfer medium circulation transfer pipe 53. Also,
On the water heater 3 side, a water supply pipe 54 and a hot water supply pipe 55 are connected midway, and a hot water circulation transfer system is provided with first and second on-off valves 5E3.57 and a second circulation pump 58 interposed midway. A tube 59 is provided, and a heat exchanger 60 for exchanging heat between the second heat transfer medium circulation transfer tube 53 and the hot water supply circulation transfer tube 59 is further provided. Note that the first and second heat transfer medium circulation transfer pipes 51, 53 and the first circulation pump 52 constitute a heat transfer medium circulation line, and the hot water supply circulation transfer pipe 59, the second circulation pump 58, and the on-off valve 56 and 57 constitute a hot water supply circulation pipe.

In the above configuration, when performing cooling operation, the first and second on-off valves 56 and 57 are closed, the refrigeration cycle is performed on the outdoor unit 1 side, and the first circulation pump 52 is operated. The medium is cooled by the evaporator 11 and supplied to the indoor unit 2 side.

On the other hand, when performing heating operation, the first and second on-off valves 56
．． 57 is opened, the second circulation pump 58 is operated to circulate high temperature water, and the first circulation pump 52 is operated to circulate the heat transfer medium through the heat transfer medium circulation transfer pipes 51 and 53. Then, in the heat exchanger 60, the heat transfer medium is heated by the heat of the high-temperature water, and is used as a heat source on the indoor unit 2 side.

In this way, during heating operation, since the heat from the water heater 3 side is used, unlike the conventional method, the heat from the regenerator 13 side is not used. There is no need to provide a valve or the like.

It goes without saying that the water heater 3 can be operated independently of the above-mentioned heating and cooling operation.

In addition, although not specifically explained in the above embodiment,
By using electrically operated on-off valves 56 and 57 interposed in the middle of the hot water supply circulation transfer pipe 59, automatic switching between cooling and heating operation can be performed.

Furthermore, the two on-off valves 56 and 57 interposed in the middle of the hot water supply circulation transfer pipe 59 may be reduced to just one.

Effects of the Invention As described above, according to the configuration of the present invention, the heat from the water heater side can be used as a heat source during heating operation, so there is no need to use the heat from the regenerator side as in the past. Therefore, there is no need to provide an expensive on-off valve or the like in the vacuum system piping on the outdoor unit side, so it is possible to reduce the cost of the equipment.

[Brief explanation of drawings]

FIG. 1 is an overall schematic configuration diagram of an absorption type heating and cooling equipment according to an embodiment of the present invention, and FIG. 2 is an entire schematic configuration diagram of an absorption type heating and cooling equipment in a conventional example. 1... Outdoor unit, 2... Indoor unit, 3... Water heater, 11... Evaporator, 12... Absorber, 13...
...Regenerator, 14... Gas-liquid separator, 15...
Condenser, 16... Concentrated absorption liquid transfer pipe, 18... Dilute absorption liquid transfer pipe, 51... First heat transfer medium circulation transfer pipe,
52...First circulation pump, 53...Second heat transfer medium circulation transfer pipe, 54...Water supply pipe, 55...Hot water supply pipe, 56...First on-off valve, 57...Second on-off valve, 58...Second circulation pump, 59...Hot water supply circulation transfer pipe, 60...Heat exchanger.

Claims (1)

[Claims] 1. In an absorption heating and cooling system equipped with an outdoor unit having an evaporator, an absorber, a regenerator, and a condenser, an indoor unit, and a water heater, there is a first circulation pump in the middle, and the heat transfer medium is connected to the indoor unit and the above evaporator. A heat transfer medium circulation pipe is provided to circulate between the heat transfer medium and the water heater, and a hot water circulation pipe is provided that has an on-off valve and a second circulation pump in the middle, and connects the water supply pipe of the water heater and the hot water supply pipe midway. , and a heat exchanger for exchanging heat between the heat transfer medium circulation pipe and the hot water supply circulation pipe.