Air conditioner and method combining air supplement compressor and indoor and outdoor auxiliary heat exchanger

文档序号：434014 发布日期：2021-12-24 浏览：5次中文

阅读说明：本技术 补气压缩机与室内外辅助换热器结合的空气调节器与方法 (Air conditioner and method combining air supplement compressor and indoor and outdoor auxiliary heat exchanger ) 是由刘金平谭庆澎于 2021-09-29 设计创作，主要内容包括：本发明公开了一种补气压缩机与室内外辅助换热器结合的空气调节器与方法；本发明主要由压缩机、主气液分离器、四通换向阀、室内外主换热器、主电子膨胀阀；利用中间补气压缩机功能,增设室内外辅换热器、辅电子膨胀阀、辅气液分离器；制冷循环时充分利用中间压力和高蒸发温度的制冷剂,由于此部分制冷剂的蒸发温度较高,可避免过度除湿,避免造成室内干燥。热泵循环时,此时由于该部分制冷剂的节流压力较高、蒸发温度较高,与该部分制冷剂换热的换热管表面将大大延迟结霜甚至不结霜,持续维持较高的换热效率以提高系统能效,在化霜期间还可避免上部流下的化霜水在室外换热器下部结冰,将缩短化霜时间、提高化霜和热泵供热效率。(The invention discloses an air conditioner and a method for combining an air supply compressor and an indoor and outdoor auxiliary heat exchanger; the invention mainly comprises a compressor, a main gas-liquid separator, a four-way reversing valve, an indoor and outdoor main heat exchanger and a main electronic expansion valve; the function of the middle air supply compressor is utilized, and an indoor and outdoor auxiliary heat exchanger, an auxiliary electronic expansion valve and an auxiliary gas-liquid separator are additionally arranged; the refrigerant with intermediate pressure and high evaporation temperature is fully utilized during the refrigeration cycle, and the evaporation temperature of the refrigerant is higher, so that excessive dehumidification can be avoided, and indoor drying is avoided. When the heat pump circulates, at the moment, because the throttling pressure of the part of the refrigerant is higher and the evaporation temperature is higher, the surface of the heat exchange tube exchanging heat with the part of the refrigerant is greatly delayed to frost or even not frost, the higher heat exchange efficiency is continuously maintained to improve the energy efficiency of the system, the defrosting water flowing down from the upper part can be prevented from freezing at the lower part of the outdoor heat exchanger during defrosting, the defrosting time is shortened, and the defrosting and heat supply efficiency of the heat pump are improved.)

1. The utility model provides an air conditioner of tonifying qi compressor and indoor outer supplementary heat exchanger combination which characterized in that includes:

a compressor (101) having a gas make-up port;

a main gas-liquid separator (102);

an auxiliary gas-liquid separator (103);

a four-way reversing valve (104);

an indoor main heat exchanger (105);

an indoor auxiliary heat exchanger (106);

an outdoor main heat exchanger (108);

an outdoor auxiliary heat exchanger (107);

a main electronic expansion valve (109);

an auxiliary electronic expansion valve (110);

a first stop valve (201), a second stop valve (202), a third stop valve (203), a fourth stop valve (204), a fifth stop valve (301), a sixth stop valve (302), a seventh stop valve (303), and an eighth stop valve (304);

the outlet of the compressor (101) is connected with the D port of the four-way reversing valve (104); an S port of the four-way reversing valve (104) is connected with an inlet of the main gas-liquid separator (102), and an outlet of the main gas-liquid separator (102) is connected with an inlet of the compressor (101);

the air supplementing port of the compressor (101) is connected with the outlet of the auxiliary gas-liquid separator (103) through a fourth stop valve (204) and/or an eighth stop valve (304);

the port A of the outdoor main heat exchanger (108) is connected with the port A of the indoor main heat exchanger (105) through a main electronic expansion valve (109);

the port A of the outdoor auxiliary heat exchanger (107) is connected with the port A of the indoor auxiliary heat exchanger (106) through an auxiliary electronic expansion valve (110);

the port C of the four-way reversing valve (104) is connected with the port B of the outdoor main heat exchanger (108) and the port B of the outdoor auxiliary heat exchanger (107) through a sixth stop valve (302) and a first stop valve (201) respectively;

the port B of the indoor auxiliary heat exchanger (106) is connected with an inlet of the auxiliary gas-liquid separator (103) through a third stop valve (203);

the port B of the indoor main heat exchanger (105) is directly connected with the port E of the four-way reversing valve (104);

the port B of the outdoor main heat exchanger (108) is connected with the port B of the outdoor auxiliary heat exchanger (107) through a second stop valve (202);

the port B of the indoor auxiliary heat exchanger (106) is connected with the port B of the indoor main heat exchanger (105) through a fifth stop valve (301);

the port B of the outdoor auxiliary heat exchanger (107) is connected with an inlet of the auxiliary gas-liquid separator (103) through a seventh stop valve (303);

the connections are all pipeline connections.

2. The air conditioner of claim 1, wherein the air make-up compressor is combined with an indoor and outdoor auxiliary heat exchanger, and the air conditioner is characterized in that:

the air supply port of the compressor (101) is divided into an upper port and a lower port;

one port of the eighth stop valve (304) and one port of the fourth stop valve (204) are respectively connected with the upper port and the lower port; the other ports of the eighth stop valve (304) and the fourth stop valve (204) are connected in parallel with each other, and then the outlet of the auxiliary gas-liquid separator (103) is connected.

3. The air conditioner of claim 2, wherein the air make-up compressor is combined with an indoor and outdoor auxiliary heat exchanger, and the air conditioner is characterized in that:

the indoor auxiliary heat exchanger (106) and the indoor main heat exchanger (105) are integrated and are arranged on the front row in the air inlet direction.

4. The air conditioner of claim 2, wherein the air make-up compressor is combined with an indoor and outdoor auxiliary heat exchanger, and the air conditioner is characterized in that:

the outdoor auxiliary heat exchanger (107) and the outdoor main heat exchanger (108) are integrated and are arranged on the lower portion of the front row in the air inlet direction.

5. An operation method of an air conditioner combining a gas supplementing compressor and an indoor and outdoor auxiliary heat exchanger is characterized by comprising the following steps of refrigeration cycle:

during refrigeration cycle, a D port of the four-way reversing valve (104) is communicated with a C port, and an E port is communicated with an S port;

the first stop valve (201), the second stop valve (202), the third stop valve (203) and the fourth stop valve (204) are opened;

the fifth stop valve (301), the sixth stop valve (302), the seventh stop valve (303) and the eighth stop valve (304) are closed;

after being compressed by a compressor (101), a refrigerant is discharged to a D port of a four-way reversing valve (104) from an outlet, at the moment, the D port of the four-way reversing valve (104) is communicated with a C port, after passing through a first stop valve (201) from the C port of the four-way reversing valve (104), one part of the refrigerant enters an outdoor main heat exchanger (108) through a second stop valve (202) to exchange heat with outdoor air to release heat, is cooled and condensed to a liquid state, and the other part of the refrigerant enters an outdoor auxiliary heat exchanger (107) to exchange heat with the outdoor air to release heat, is cooled and condensed to the liquid state;

the condensed refrigerant in the outdoor main heat exchanger (108) is throttled, depressurized and cooled by a main electronic expansion valve (109), enters the indoor main heat exchanger (105) to absorb heat, refrigerate and gasify to a gaseous state, and cools and refrigerates indoor air; refrigerant enters the compressor (101) through an E port and an S port of the four-way reversing valve (104) and the main gas-liquid separator (102) to be compressed and circulates again;

the condensed refrigerant in the outdoor auxiliary heat exchanger (107) is throttled, depressurized and cooled by an auxiliary electronic expansion valve (110), enters the indoor auxiliary heat exchanger (106) to absorb heat, refrigerate and gasify to a gaseous state, and cools and refrigerates indoor air; the refrigerant enters the compressor (101) through the third stop valve (203), the auxiliary gas-liquid separator (103) and the fourth stop valve (204) in sequence, is compressed and circulates again.

6. The operation method of the air conditioner in which the air make-up compressor is combined with the indoor and outdoor auxiliary heat exchangers according to claim 5, wherein the valve opening degrees of the main electronic expansion valve (109) and the auxiliary electronic expansion valve (110) are adjusted to control the flow rate of the refrigerant into the outdoor main heat exchanger (108) and the outdoor auxiliary heat exchanger (107).

7. The operation method of the air conditioner with the air make-up compressor combined with the indoor and outdoor auxiliary heat exchangers according to claim 6, wherein the opening degree of the auxiliary electronic expansion valve (110) is adjusted to make the flow rate of the refrigerant entering the outdoor main heat exchanger (108) larger than the flow rate of the outdoor auxiliary heat exchanger (107).

8. An operation method of an air conditioner combining a gas supplementing compressor and an indoor and outdoor auxiliary heat exchanger is characterized by comprising the following steps of heat pump circulation:

when the heat pump circulates, a D port of the four-way reversing valve (104) is communicated with an E port, and a C port is communicated with an S port;

the first stop valve (201), the second stop valve (202), the third stop valve (203) and the fourth stop valve (204) are closed;

the fifth stop valve (301), the sixth stop valve (302), the seventh stop valve (303) and the eighth stop valve (304) are opened;

after being compressed by a compressor (101), the refrigerant is discharged to a D port of a four-way reversing valve (104) from an outlet, at the moment, the D port of the four-way reversing valve (104) is communicated with an E port, a fifth stop valve (301) is opened, the refrigerant heats indoor air through an indoor main heat exchanger (105) and an indoor auxiliary heat exchanger (106) to release heat, and the refrigerant is cooled and condensed to be in a liquid state;

the refrigerant condensed in the indoor main heat exchanger (105) is throttled, depressurized and cooled by a main electronic expansion valve (109), enters an outdoor main heat exchanger (108) to absorb heat and is gasified to a gaseous state; the refrigerant sequentially passes through a sixth stop valve (302), a C port and an S port of a four-way reversing valve (104), a main gas-liquid separator (102), enters a compressor (101) for compression and circulates again;

the refrigerant condensed in the indoor auxiliary heat exchanger (106) is throttled, depressurized and cooled by the auxiliary electronic expansion valve (110), enters the outdoor auxiliary heat exchanger (107) to absorb heat and is gasified to a gaseous state, and the gasified refrigerant sequentially passes through the seventh stop valve (303), the auxiliary gas-liquid separator (103) and the eighth stop valve (304) and enters the compressor (101) to be compressed and recycled.

Technical Field

The invention relates to the field of heat pump type air conditioners, in particular to an air conditioner and a method for combining a gas supplementing compressor and an indoor and outdoor auxiliary heat exchanger.

Background

In order to improve the heating capacity of the heat pump type air conditioner in low-temperature or even ultra-low-temperature environment, an intermediate air supply compressor is adopted, namely a quasi-two-stage compression cycle and an economizer are added, when the heat pump is circulated, a small part of refrigerant is throttled to intermediate pressure and intermediate temperature, the temperature of the refrigerant at the outlet of an indoor heat exchanger (condenser) is further reduced, the heat absorption capacity of the refrigerant of unit mass in an outdoor heat exchanger (evaporator) can be increased under the condition that the volume flow of the compressor in a suction state is unchanged, and the heating capacity in the low-temperature or even ultra-low-temperature environment is improved. But the capability of improving the refrigerating capacity and the energy efficiency is neglected during the refrigeration cycle, the problem of excessive dehumidification of the air conditioner is easy to generate, and the problem of frosting and defrosting also occur during the heat pump cycle.

Disclosure of Invention

The present invention is directed to overcome the above-mentioned disadvantages and drawbacks of the prior art and to provide an air conditioner and method in which a compressor for supplying air is combined with an indoor/outdoor auxiliary device for heat exchange.

The invention utilizes the function of the compressor capable of supplementing air in the middle to add the indoor auxiliary heat exchanger and the outdoor auxiliary heat exchanger. The refrigerant with intermediate pressure and high evaporation temperature is fully utilized in the refrigeration cycle, and the evaporation temperature of the refrigerant is high, so that the cycle efficiency is high, the energy efficiency ratio is about 10, excessive dehumidification can be avoided, and indoor drying is avoided.

When the heat pump circulates, at the moment, because the throttling pressure of the part of the refrigerant is higher and the evaporation temperature is higher, the surface of the heat exchange tube exchanging heat with the part of the refrigerant is greatly delayed to frost or even does not frost, the higher heat exchange efficiency is continuously maintained to improve the energy efficiency of the system, the defrosting water flowing down from the upper part can be prevented from freezing at the lower part of the outdoor heat exchanger during defrosting, the defrosting time is shortened, and the defrosting efficiency and the heat supply efficiency of the heat pump are improved. Because the evaporation temperature of the part of the refrigerant is higher, the defrosting efficiency and the heat pump cycle efficiency can be obviously improved.

The invention is realized by the following technical scheme:

an air conditioner combining a supplementary compressor with an indoor and outdoor auxiliary heat exchanger, comprising:

a compressor 101 having a gas make-up port;

a main gas-liquid separator 102;

an auxiliary gas-liquid separator 103;

a four-way reversing valve 104;

an indoor main heat exchanger 105;

an indoor auxiliary heat exchanger 106;

an outdoor main heat exchanger 108;

an outdoor auxiliary heat exchanger 107;

a main electronic expansion valve 109;

an auxiliary electronic expansion valve 110;

a first stop valve 201, a second stop valve 202, a third stop valve 203, a fourth stop valve 204, a fifth stop valve 301, a sixth stop valve 302, a seventh stop valve 303, and an eighth stop valve 304;

the outlet of the compressor 101 is connected with the D port of the four-way reversing valve 104; an S port of the four-way reversing valve 104 is connected with an inlet of the main gas-liquid separator 102, and an outlet of the main gas-liquid separator 102 is connected with an inlet of the compressor 101;

the air supplementing port of the compressor 101 is connected with the outlet of the auxiliary gas-liquid separator 103 through the fourth stop valve 204 and/or the eighth stop valve 304;

the port A of the outdoor main heat exchanger 108 is connected with the port A of the indoor main heat exchanger 105 through a main electronic expansion valve 109;

the port A of the outdoor auxiliary heat exchanger 107 is connected with the port A of the indoor auxiliary heat exchanger 106 through an auxiliary electronic expansion valve 110;

the port C of the four-way reversing valve 104 is connected with the port B of the outdoor main heat exchanger 108 and the port B of the outdoor auxiliary heat exchanger 107 through a sixth stop valve 302 and a first stop valve 201 respectively;

the port B of the indoor auxiliary heat exchanger 106 is connected with the inlet of the auxiliary gas-liquid separator 103 through a third stop valve 203;

the port B of the indoor main heat exchanger 105 is directly connected with the port E of the four-way reversing valve 104;

the port B of the outdoor main heat exchanger 108 is connected with the port B of the outdoor auxiliary heat exchanger 107 through a second stop valve 202;

the port B of the indoor auxiliary heat exchanger 106 is connected with the port B of the indoor main heat exchanger 105 through a fifth stop valve 301;

the port B of the outdoor auxiliary heat exchanger 107 is connected with an inlet of the auxiliary gas-liquid separator 103 through a seventh stop valve 303;

the connections are all pipeline connections.

The air supply port of the compressor 101 is divided into an upper port and a lower port;

one port of the eighth stop valve 304 and one port of the fourth stop valve 204 are respectively connected with the upper port and the lower port; the other ports of the eighth cut-off valve 304 and the fourth cut-off valve 204 are connected in parallel with each other, and then connected to the outlet of the auxiliary gas-liquid separator 103.

The indoor auxiliary heat exchanger 106 and the indoor main heat exchanger 105 are integrated and arranged at the front row in the air inlet direction.

The outdoor auxiliary heat exchanger 107 and the outdoor main heat exchanger 108 are integrated and arranged at the lower part of the front row in the air inlet direction.

An operation method of an air conditioner combining a supplementary air compressor and an indoor and outdoor auxiliary heat exchanger includes:

step of refrigeration cycle

During refrigeration cycle, the D port of the four-way reversing valve 104 is communicated with the C port, and the E port is communicated with the S port;

the first, second, third, and fourth cut-off valves 201, 202, 203, 204 are opened;

the fifth, sixth, seventh, and eighth cut-off valves 301, 302, 303, and 304 are closed;

after being compressed by the compressor 101, the refrigerant is discharged to a D port of the four-way reversing valve 104 from an outlet, at the moment, the D port of the four-way reversing valve 104 is communicated with a C port, after passing through the first stop valve 201 from the C port of the four-way reversing valve 104, one part of the refrigerant enters the outdoor main heat exchanger 108 through the second stop valve 202 to exchange heat with outdoor air and release heat, is cooled and condensed to be in a liquid state, and the other part of the refrigerant enters the outdoor auxiliary heat exchanger 107 to exchange heat with the outdoor air and release heat, is cooled and condensed to be in the liquid state;

the condensed refrigerant in the outdoor main heat exchanger 108 is throttled, depressurized and cooled by the main electronic expansion valve 109, enters the indoor main heat exchanger 105 to absorb heat, refrigerate and gasify to a gaseous state, and cools and refrigerates indoor air; refrigerant enters the compressor 101 for compression through an E port and an S port of the four-way reversing valve 104 and the main gas-liquid separator 102, and circulates again;

the condensed refrigerant in the outdoor auxiliary heat exchanger 107 is throttled, depressurized and cooled by the auxiliary electronic expansion valve 110, enters the indoor auxiliary heat exchanger 106 to absorb heat, refrigerate and gasify to a gaseous state, and cools and refrigerates indoor air; the refrigerant sequentially passes through the third stop valve 203, the auxiliary gas-liquid separator 103, and the fourth stop valve 204, enters the compressor 101, is compressed, and circulates again.

Heat pump cycle steps

When the heat pump circulates, the D port of the four-way reversing valve 104 is communicated with the E port, and the C port is communicated with the S port;

the first, second, third, and fourth cut-off valves 201, 202, 203, and 204 are closed;

the fifth stop valve 301, the sixth stop valve 302, the seventh stop valve 303 and the eighth stop valve 304 are opened;

after being compressed by the compressor 101, the refrigerant is discharged to a D port of the four-way reversing valve 104 from an outlet, at the moment, the D port of the four-way reversing valve 104 is communicated with an E port, the fifth stop valve 301 is opened, the refrigerant heats indoor air through the indoor main heat exchanger 105 and the indoor auxiliary heat exchanger 106 to release heat, and the refrigerant is cooled and condensed to be in a liquid state;

the refrigerant condensed in the indoor main heat exchanger 105 is throttled, depressurized and cooled by the main electronic expansion valve 109, enters the outdoor main heat exchanger 108 to absorb heat and is gasified to a gaseous state; the refrigerant sequentially passes through the sixth stop valve 302, the port C and the port S of the four-way reversing valve 104, the main gas-liquid separator 102, enters the compressor 101 for compression and circulates again;

Compared with the prior art, the invention has the following advantages and effects:

the invention utilizes the function of the compressor capable of supplementing air in the middle to add the indoor auxiliary heat exchanger and the outdoor auxiliary heat exchanger. The refrigerant with intermediate pressure and high evaporation temperature is fully utilized during the refrigeration cycle, and the evaporation temperature of the refrigerant is higher, so that excessive dehumidification can be avoided, and indoor drying is avoided. The circulation efficiency is high, the energy efficiency ratio is about as high as 10, and the refrigerating capacity and the circulation efficiency can be remarkably increased.

When the heat pump circulates, at the moment, because the throttling pressure of the part of the refrigerant is higher and the evaporation temperature is higher, the surface of a heat exchange pipe for exchanging heat of the part of the refrigerant can greatly delay frosting or even not frosting, the higher heat exchange efficiency is continuously maintained to improve the energy efficiency of the system, the defrosting water flowing down from the upper part can be prevented from being frozen at the lower part of the outdoor heat exchanger during defrosting, the defrosting time can be shortened, and the defrosting efficiency can be improved. The heat supply efficiency of the heat pump is improved. Because the evaporation temperature of the part of the refrigerant is higher, the defrosting efficiency can be improved, the heat pump cycle efficiency can be improved, the COP is about 10, and the heat supply amount can be obviously increased and the cycle efficiency can be improved.

The invention has the advantages of simple and easy technical means, precise and ingenious conception, low manufacturing cost and positive popularization and application values.

Drawings

Fig. 1 is a flowchart illustrating an operation of the air conditioner of the present invention in a refrigerating cycle.

Fig. 2 is a flow chart of the work of the indoor and outdoor heat exchangers in the refrigeration cycle.

Fig. 3 is a flow chart showing the operation of the air conditioner of the present invention in the heat pump cycle.

Fig. 4 is a flow chart of the working process of the indoor and outdoor heat exchangers in the heat pump cycle.

Detailed Description

The present invention will be described in further detail with reference to specific examples.

The invention discloses an air conditioner combining a gas supplementing compressor and an indoor and outdoor auxiliary heat exchanger, which comprises: