CN201212721Y - An air conditioner full heat recovery unit - Google Patents

Abstract

The utility model belongs to the field of air conditioners, in particular to a novel air conditioner full heat recovery unit for providing domestic water by fully recovering condensation heat. A total heat recovery unit for an air conditioner, including a compressor, an air-side finned heat exchanger, a water-side heat exchanger, a total heat recovery heat exchanger, a four-way reversing valve, a solenoid valve, a one-way valve, and an electronic expansion valve , a liquid reservoir, a dry filter, and a pipeline. The pipeline is equipped with a heat recovery heat exchanger, a four-way reversing valve, a plurality of solenoid valves and a one-way valve, and there are multiple circulation modes of the refrigerant. The utility model can provide an air-conditioning unit integrating refrigeration, heating and domestic hot water, and can provide domestic hot water in any season and whether the air-conditioning end of the room is turned on or not. Using domestic hot water while using the air conditioner for refrigeration can also stop releasing condensation heat to the outside, and also improve the efficiency of the unit, which is energy-saving and environmentally friendly.

Description

An air conditioner full heat recovery unit

【Technical field】

The utility model belongs to the field of air conditioners, in particular to a novel air conditioner full heat recovery unit for providing domestic water by fully recovering condensation heat.

【Background technique】

Now with the development and progress of society, people's living standards have been greatly improved, and air-conditioning units have also begun to be widely used in people's work and life. But the commonly used air conditioners only have cooling or both cooling and heating modes. Although some units with air-conditioning heat recovery function have begun to appear in the market in recent years, they still have some shortcomings. For example: "air conditioning heat recovery unit" (publication number: CN2548058Y, publication date: April 30th, 2003, patent number: 02220736.8) has done a detailed description to its working principle and implementation method in the Chinese patent. The main method used for heat recovery is to connect a heat recovery heat exchanger to the pipeline between the compressor and the four-way reversing valve. While using the air conditioner, the sensible heat of the exhaust and part of the latent heat of condensation are used to heat the cold water. But the deficiency of this heat recovery mode is: 1, must just can get hot water when using air-conditioning in the room, so when the room does not need to use air-conditioning, can't provide hot water. 2. It only converts part of the condensation heat into hot water to realize partial heat recovery. The amount of hot water obtained is very small, and it is difficult to ensure normal domestic water consumption. This will inevitably lead to a very limited heat recovery efficiency. The above-mentioned problems have existed for a long time in the industry, and there has been no effective technical solution to solve them.

【Content of invention】

The purpose of this utility model is to provide an air-conditioning unit integrating cooling, heating and domestic hot water, which can provide domestic hot water in any season and whether the air-conditioning end of the room is turned on or not. Using domestic hot water while using the air conditioner for cooling can also stop releasing condensation heat to the outside, and also improve the efficiency of the unit, which is energy-saving and environmentally friendly.

In order to achieve the above-mentioned technical purpose, the technical solution adopted by the utility model includes the following technical content: an air conditioner full heat recovery unit, including a compressor (1), an air-side finned heat exchanger (5), a water-side heat exchanger Heater (16), total heat recovery heat exchanger (6), four-way reversing valve (4), solenoid valve (2), (3), (9), (11), one-way valve (7), (8), (12), (14), (17), (18), electronic expansion valve (10), liquid reservoir (15), dry filter (13) and pipeline, in the pipeline It is equipped with a heat recovery heat exchanger, a four-way reversing valve, a plurality of solenoid valves and one-way valves, and is characterized in that the two pipelines at the exhaust end of the compressor (1) are connected with solenoid valves (3) The solenoid valve (2) and the solenoid valve (3) are connected to the four-way reversing valve (4), and the superheated steam discharged from the compressor (1) can flow to the total heat recovery heat exchanger (6) through the solenoid valve (2). It can also flow to the air-side finned heat exchanger (5) through the solenoid valve (3) and the four-way reversing valve (4), and can also flow to the air side finned heat exchanger (5) through the solenoid valve (3) and the four-way reversing valve (4). The water side heat exchanger (16), and at the same time, only one is a passage, so that the refrigerant has multiple circulation modes. The inlet of the liquid receiver (15) has two paths, and one path passes through the one-way valve (17 ) is connected to the water side heat exchanger (16), and the other one is connected to the total heat recovery heat exchanger (6) through a check valve (18).

There are two paths at the inlet of the dry filter (13), one path is connected to the air-side finned heat exchanger (5) through the one-way valve (7), and the other path is connected to the liquid storage through the one-way valve (1)4. connected to the device.

There are two outlets of the electronic expansion valve (10), one of which is connected to the air-side finned heat exchanger (5) through a solenoid valve (9) and a one-way valve (8), and the other through a solenoid valve (11 ) and check valve (12) are connected with water side heat exchanger (16).

The utility model obtains the following positive technical effects by adopting the above-mentioned technical solution: the utility model connects the heat recovery heat exchanger between the compressor, the four-way reversing valve, the water side heat exchanger and the liquid storage The space structure makes the above-mentioned air-conditioning unit no longer use the original condenser at all when it is running and using hot water, so as to realize the recovery of all condensation heat and supply a large amount of hot water, which not only enhances the ability of heat recovery and thermal efficiency At the same time, the hot water supply capacity of the air conditioning unit is also greatly enhanced; in addition, by adopting the above-mentioned structure and controlling the solenoid valve in the pipeline, the function of hot water supply can also be realized when the air conditioner is not in use, which can ensure Real-time hot water supply. It has improved the problem that some existing heat recovery systems of air conditioning units have no hot water supply capacity when the air conditioner is not used; through the control of the microcomputer, it can realize automatic adjustment and automatic conversion of the working mode completely according to the demand of air conditioner and hot water . In a word, the utility model solves the problem that hot water cannot be supplied in real time through the heat recovery of the air conditioner by adopting the above structure.

【Description of drawings】

Fig. 1 is the system schematic diagram of the utility model

【Detailed ways】

The working mode of the utility model has five operation modes: air-conditioning refrigeration, air-conditioning heating, heat pump water heater, automatic in summer and automatic in winter.

Four operating modes: air conditioning cooling, air conditioning cooling + domestic hot water, domestic hot water (summer, winter), air conditioning heating.

1. When the air conditioner is running in refrigeration mode, the low-temperature and low-pressure refrigerant vapor is compressed by compressor 1 into high-temperature and high-pressure superheated vapor, which flows to solenoid valve 3. Solenoid valve 3 opens, and solenoid valve 2 closes simultaneously. Then it flows to the four-way reversing valve 4 (de-energized), then flows to the finned heat exchanger 5, exchanges heat with the outdoor air, and condenses into a medium-temperature and high-pressure liquid in the finned heat exchanger 5 (fan is turned on). The medium-temperature and high-pressure liquid flows through the one-way valve 7 to the filter 13, and then flows to the electronic expansion valve 10, where it expands into a low-temperature and low-pressure liquid. The low-temperature and low-pressure liquid passes through the solenoid valve 11. The solenoid valve 11 is opened, and the solenoid valve 9 is closed at the same time. Cool the air-conditioning water to the set temperature, and at the same time, the low-temperature and low-pressure liquid evaporates into low-temperature and low-pressure gas, flows to the four-way reversing valve 4, and finally flows back to the compressor 1 to complete the entire refrigeration cycle.

2. When the air conditioner is running in refrigeration + domestic hot water mode, the low-temperature and low-pressure refrigerant vapor is compressed by compressor 1 into high-temperature and high-pressure superheated steam, which flows to solenoid valve 2. Solenoid valve 2 opens, and solenoid valve 3 closes simultaneously. Then it flows to the heat recovery device 6 to exchange heat with domestic hot water. The domestic water is heated to the set temperature, and at the same time, the high-temperature and high-pressure superheated steam is condensed into a medium-temperature and high-pressure liquid in the heat recovery device 6 . The medium-temperature and high-pressure liquid then flows through the one-way valve 18 to the liquid reservoir 15, then flows to the one-way valve 14, passes through the filter 13, and then flows to the electronic expansion valve 10, where it expands into a low-temperature and low-pressure liquid. The low-temperature and low-pressure liquid passes through the solenoid valve 11. The solenoid valve 11 is opened, and the solenoid valve 9 is closed at the same time. Cool the air-conditioning water to the set temperature, and at the same time, the low-temperature and low-pressure liquid evaporates into a low-temperature and low-pressure gas, which flows to the four-way reversing valve 4 (without electricity), and finally flows back to the compressor 1 to complete the whole cycle.

3. When the domestic hot water mode is running, the low-temperature and low-pressure refrigerant vapor is compressed by the compressor 1 into high-temperature and high-pressure superheated steam, and flows to the solenoid valve 2. The solenoid valve 2 is opened, and the solenoid valve 3 is closed simultaneously. Then it flows to the heat recovery device 6 to exchange heat with domestic hot water. The domestic water is heated to the set temperature, and at the same time, the high-temperature and high-pressure superheated steam is condensed into a medium-temperature and high-pressure liquid in the heat recovery device 6 . The medium-temperature and high-pressure liquid then flows through the one-way valve 18 to the liquid reservoir 15, then flows to the one-way valve 14, passes through the filter 13, and then flows to the electronic expansion valve 10, where it expands into a low-temperature and low-pressure liquid. The low-temperature and low-pressure liquid passes through the solenoid valve 9. The solenoid valve 9 is opened, and the solenoid valve 11 is closed at the same time. The low-temperature and low-pressure liquid evaporates into low-temperature and low-pressure gas, flows to the four-way reversing valve 4 (charged), and finally flows back to the compressor 1 to complete the whole cycle.

4. When the air conditioner is running in heating mode, the low-temperature and low-pressure refrigerant vapor is compressed by the compressor 1 into high-temperature and high-pressure superheated vapor, which flows to the solenoid valve 3, and the solenoid valve 3 is opened, and the solenoid valve 2 is closed simultaneously. Then flow to the four-way reversing valve 4 (charged), and then flow to the water side heat exchanger 16 to exchange heat with the air-conditioning water. The air-conditioning water is heated to the set temperature, and at the same time, the high-temperature and high-pressure superheated steam is condensed into a medium-temperature and high-pressure liquid. The medium-temperature and high-pressure liquid then flows through the one-way valve 17 to the liquid reservoir 15, then flows to the one-way valve 14, passes through the filter 13, and then flows to the electronic expansion valve 10, where it expands into a low-temperature and low-pressure liquid. The low-temperature and low-pressure liquid passes through the solenoid valve 9. The solenoid valve 9 is opened, and the solenoid valve 11 is closed at the same time. The low-temperature and low-pressure liquid evaporates into low-temperature and low-pressure gas, flows to the four-way reversing valve 4 (charged), and finally flows back to the compressor 1 to complete the whole cycle.

When the automatic mode is used in summer, the microcomputer controller will automatically switch the operating mode according to the set air conditioner and hot water demand, so as to realize the most energy-saving and intelligent adjustment.

When the automatic mode is used in winter, the mode will be activated in time-sharing to meet the needs of air conditioning and hot water.

The above description is to be considered as the preferred embodiment only. Many other variations of the invention will be apparent to those skilled in the art and to those who make or use the invention. Therefore, it is to be understood that the above-described illustrated embodiments are exemplary only, and do not limit the scope of the present invention, which is interpreted in accordance with the principles of patent law, including the principle of equivalents. The following claims are defined.

Claims (3)

1, the full recuperation of heat unit of a kind of air-conditioning, comprise compressor (1), air side fins formula heat exchanger (5), water-side heat (16), full heat recovering heat exchanger (6), four-way change-over valve (4), magnetic valve (2), (3), (9), (11), check valve (7), (8), (12), (14), (17), (18), electric expansion valve (10), reservoir (15), device for drying and filtering (13) and pipeline, be provided with heat recovering heat exchanger and four-way change-over valve and a plurality of magnetic valve and check valve in the described pipeline, it is characterized in that: be connected with magnetic valve (3) and magnetic valve (2) in two pipelines of described compressor (1) exhaust end, magnetic valve (3) connects four-way change-over valve (4), the superheated vapor that compressor (1) is discharged can all flow to full heat recovering heat exchanger (6) by magnetic valve (2), also can all flow to air side fins formula heat exchanger (5) by magnetic valve (3) and four-way change-over valve (4), also can all flow to water-side heat (16) by magnetic valve (3) and four-way change-over valve (4), and at one time, have only one to be path, make refrigerant that multiple circulation style be arranged, described reservoir (15) entrance point has two-way, the check valve (17) of leading up to links to each other with water-side heat (16), and the check valve (18) of leading up in addition links to each other with full heat recovering heat exchanger (6).

2, the full recuperation of heat unit of air-conditioning according to claim 1, it is characterized in that: described device for drying and filtering (13) entrance point has two-way, the check valve (7) of leading up to links to each other with air side fins formula heat exchanger (5), and the check valve (1) 4 of leading up in addition links to each other with reservoir.

3, the full recuperation of heat unit of air-conditioning according to claim 1, it is characterized in that: described electric expansion valve (10) port of export has two-way, leading up to magnetic valve (9) and check valve (8) links to each other with air side fins formula heat exchanger (5), leads up to magnetic valve (11) and check valve (12) in addition to link to each other with water-side heat (16).

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