CN213480642U - Air conditioner defrosting system - Google Patents
Air conditioner defrosting system Download PDFInfo
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- CN213480642U CN213480642U CN202022371215.8U CN202022371215U CN213480642U CN 213480642 U CN213480642 U CN 213480642U CN 202022371215 U CN202022371215 U CN 202022371215U CN 213480642 U CN213480642 U CN 213480642U
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Abstract
An air conditioner defrosting system comprises a compressor, a four-way electromagnetic valve, a condenser, a throttling device, an evaporator and a connecting pipeline thereof, wherein the compressor is connected with the condenser, the throttling device and the evaporator through the four-way electromagnetic valve to form a refrigerant circulating system; the condenser is divided into n groups, n is a natural number larger than 1, one end of each group of condensers is connected with the output end of the compressor and the output end of the four-way electromagnetic valve through respective switch valves, and the other end of each group of condensers is connected with the two ends of the throttling device through respective switch valves. The utility model discloses an optimize condenser system architecture and refrigerant flow direction, make air source heat pump air conditioner heat in-process outdoor unit condenser defrosting in winter effectual, keep indoor set air supply temperature, avoid abrupt temperature to reduce or stop the air supply, the travelling comfort is good, improves the air conditioner performance of heating in winter.
Description
The technical field is as follows:
the utility model belongs to the technical field of air conditioning, concretely relates to air conditioner defrosting system and method is applied to the outdoor unit defrosting of air source heat pump air conditioner, water heater in the process of heating winter.
Background art:
the system structure principle of the existing air source heat pump air conditioner is shown in fig. 1, a compressor 1 is connected with a condenser 3, a throttling device 4 and an evaporator 5 through a four-way electromagnetic valve 2 to form a circulating system, a refrigerant flows in the circulating system, cooling and heating are realized through different states of the refrigerant in the condenser and the evaporator, the flow directions of the refrigerant during cooling and heating are opposite, and the flow direction of the refrigerant during heating and defrosting is the same as the cooling state.
When the air source heat pump air conditioner is used for heating and defrosting, the air conditioner is switched into a refrigeration mode through the four-way electromagnetic valve 2, and high-temperature and high-pressure gaseous refrigerant which originally flows to an indoor evaporator is reversed to flow to an outdoor condenser, so that frost on the condenser is melted; the phenomenon of incomplete defrosting is also possible, so that the frost on the condenser of the outdoor unit is thicker and thicker, the heat exchange efficiency is influenced, the energy consumption is increased, and the heating effect of the air conditioner is poor; therefore, defrosting of the air conditioner is a technical problem which always troubles heating of the air source heat pump air conditioner in winter.
The utility model has the following contents:
the utility model discloses the technical problem that will solve is: the air conditioner defrosting system has the advantages that the defrosting effect of the outdoor unit condenser is good in the winter heating process of the air source heat pump air conditioner by optimizing the structure of the condenser system and the flow direction of the refrigerant, the air supply temperature of the indoor unit is kept, sudden temperature reduction or air supply stopping is avoided, the comfort is good, and the winter heating performance of the air conditioner is improved.
The utility model adopts the technical proposal that:
an air conditioner defrosting system comprises a compressor, a four-way electromagnetic valve, a condenser, a throttling device, an evaporator and a connecting pipeline thereof, wherein the compressor is connected with the condenser, the throttling device and the evaporator through the four-way electromagnetic valve to form a refrigerant circulating system; the condenser is divided into n groups, n is a natural number larger than 1, one end of each group of condensers is connected with the output end of the compressor and the output end of the four-way electromagnetic valve through respective switch valves, and the other end of each group of condensers is connected with the two ends of the throttling device through respective switch valves. When the air conditioner heats in winter, the refrigerant of one or more groups of condensers in the n groups of condensers flows in a reversing way by selectively controlling the switching state of each switching valve, so that defrosting is performed, and the flow direction of the refrigerant of the compressor, the four-way electromagnetic valve, the evaporator and the throttling device of the whole air conditioning system is unchanged and is still kept in the heating state in winter. Therefore, the condition that the air supply temperature of the evaporator, namely the indoor unit, is suddenly cooled or the air supply is stopped can not occur, and the problems of low heating efficiency and poor comfort of the air source heat pump air conditioner in winter for many years are solved. Because the utility model discloses divide the condenser into a plurality of condenser groups, the corresponding several times has improved the efficiency of condenser, has just also improved the refrigeration heating efficiency of air source heat pump air conditioner.
In the technical scheme, the input end and the output end of the compressor are respectively connected with two input ends of a four-way electromagnetic valve, one output end of the four-way electromagnetic valve is connected with one end of an evaporator, the other end of the evaporator is connected with one end of a throttling device, the other output end of the four-way electromagnetic valve is respectively connected with one end of n groups of condensers through a first group of n switch valves, and meanwhile, the compressed output end is also respectively connected with one end of the n groups of condensers directly through a second group of n switch valves; the other ends of the n groups of condensers are respectively connected with one end of the throttling device through a third group of n switch valves, and the other ends of the n groups of condensers are simultaneously connected with the other end of the throttling device through a fourth group of n switch valves.
In the technical scheme, the switch valves are electromagnetic valves, the n groups of condensers comprise a first group of condensers, a second group of condensers and an nth group of condensers, and the respective switch valves comprise electromagnetic valves 1-1, electromagnetic valves 2-1, electromagnetic valves n-1, electromagnetic valves 1-2, electromagnetic valves 2-2, electromagnetic valves n-2, electromagnetic valves 1-3, electromagnetic valves 2-3, electromagnetic valves n-3, electromagnetic valves 1-4, electromagnetic valves 2-4 and electromagnetic valves n-4; the connection structure of each group of condensers through respective switch valves is as follows:
one end of the first group of condensers is connected with the output end of the four-way electromagnetic valve through the electromagnetic valve 1-1 and is directly connected with the output end of the compressor through the electromagnetic valve 1-2; the other end of the first group of condensers is connected with one end of the throttling device through an electromagnetic valve 1-3 and is also connected with the other end of the throttling device through an electromagnetic valve 1-4;
one end of the second group of condensers is connected with the output end of the four-way electromagnetic valve through the electromagnetic valve 2-1 and is directly connected with the output end of the compressor through the electromagnetic valve 2-2; the other end of the second group of condensers is connected with one end of the throttling device through an electromagnetic valve 2-3 and is also connected with the other end of the throttling device through an electromagnetic valve 2-4;
one end of the nth group of condensers is connected with the output end of the four-way electromagnetic valve through an electromagnetic valve n-1 and is directly connected with the output end of the compressor through an electromagnetic valve n-2; the other end of the nth group of condensers is connected with one end of the throttling device through an electromagnetic valve n-3 and the other end of the throttling device through an electromagnetic valve n-4.
In the technical scheme, the input end and the output end of the compressor are respectively connected with the two input ends of the four-way electromagnetic valve, the two output ends of the four-way electromagnetic valve are respectively connected with one end of the evaporator and the electromagnetic valve 1-1, the electromagnetic valve 2-1 and the electromagnetic valve n-1, and the other end of the evaporator is connected with the throttling device.
The utility model discloses divide into n group with the condenser, n is for being greater than 1 natural number, and the flow direction of solenoid valve control refrigerant is add respectively to every group condenser to form independent loop with air conditioner refrigerant circulating system, let single group condenser defrosting or the defrosting of multiunit condenser among n group condenser:
when the single-group condenser defrosts: the electromagnetic valve connected with the output end of the compressor at one end of the condenser set is opened, the electromagnetic valve connected with the output end of the four-way electromagnetic valve at one end of the condenser set is closed, the electromagnetic valve connected with one end of the throttling device at the other end of the condenser set is opened, and the electromagnetic valve connected with the other end of the throttling device at the other end of the condenser set is closed, so that the refrigerant in the condenser set reversely flows for defrosting; and the electromagnetic valves connected with the output end of the compressor at one end of the other group of condensers are closed, the electromagnetic valves connected with the output end of the four-way electromagnetic valve at one end of the other group of condensers are opened, the electromagnetic valves connected with one end of the throttling device at the other end of the other group of condensers are closed, the electromagnetic valves connected with the other end of the throttling device at the other end of the other group of condensers are opened, and the refrigerant in the other group of condensers normally flows to maintain the heating of the.
When the defrosting is carried out simultaneously by a plurality of groups: the electromagnetic valve connected with the output end of the compressor at one end of the multiple groups of condensers is opened, the electromagnetic valve connected with the output end of the four-way electromagnetic valve at one end of the multiple groups of condensers is closed, the electromagnetic valve connected with one end of the throttling device at the other end of the multiple groups of condensers is opened, the electromagnetic valve connected with the other end of the throttling device at the other end of the multiple groups of condensers is closed, and; and the electromagnetic valve connected with the output end of the compressor is closed at one end of the non-defrosting condenser group, the electromagnetic valve connected with the output end of the four-way electromagnetic valve is opened at one end of the non-defrosting condenser group, the electromagnetic valve connected with one end of the throttling device at the other end of the non-defrosting condenser group is closed, the electromagnetic valve connected with the other end of the throttling device at the other end of the non-defrosting condenser group is opened, and the refrigerant in the non-defrosting condenser group normally flows to maintain the heating of the air conditioning system.
When multiple groups of condensers defrost simultaneously, the on-off state of the electromagnetic valve of at least one group of condensers is not defrosted, and the normal flow of the refrigerant of the condensers is maintained to maintain the heating of the air conditioning system.
The utility model discloses divide into the multiunit with current air source heat pump air conditioner's condenser, solenoid valve control is add to every group, change the flow direction of refrigerant in the condenser with this, and form independent return circuit with air conditioner circulation system, make the part group in the multiunit condenser be in defrosting operating condition, except the condenser group of defrosting work, the normal flow direction of refrigerant when other condenser groups still maintain the air conditioner and heat, thus, its refrigerant normal flow direction of some condenser groups heats operating condition, another part condenser group then makes refrigerant reverse flow through solenoid valve control, defrost the condenser. Therefore, the utility model discloses divide into the multiunit with the condenser, the multiunit condenser divides the worker, through the flow direction of a plurality of solenoid valve control refrigerant, makes the air conditioner when heating winter, can defrost the condenser of off-premises station, can keep the normal warm braw of indoor set evaporimeter again. The utility model discloses thoroughly changed prior art air conditioner in winter when the condenser defrosting indoor set blows cold wind or stops the uncomfortable of air supply, the multiunit condenser has also improved the work efficiency of condenser and the refrigeration of air conditioner and has heated the effect moreover.
The utility model discloses divide into the multiunit with the condenser, adopt a plurality of solenoid valves to control respectively, simple structure does not change current air conditioning system structure, and easy to carry out has solved the difficult technical problem that air source heat pump air conditioning system heated the effect difference winter for a plurality of years.
Description of the drawings:
FIG. 1 is a schematic diagram of a prior art structure;
fig. 2 is a schematic structural diagram of the present invention.
The attached drawings are marked as follows:
1-compressor, 11-compressor input, 12-compressor output, 2-four-way solenoid valve, 21-four-way solenoid valve first input, 22-four-way solenoid valve second input, 23-four-way solenoid valve first output, 24-four-way solenoid valve second output, 3-evaporator, 4-throttling device, 4A-throttling device one end, 4B-throttling device another end, 5-condenser, 51-first group condenser, 52-second group condenser, 53-nth group condenser, 51A-first group condenser one end, 51B-first group condenser another end, 52A-second group condenser one end, 52B-second group condenser another end, 5 nA-nth group condenser one end, 53B-nth group condenser another end;
The specific implementation mode is as follows:
referring to fig. 2, the utility model discloses an air conditioner defrost system, including compressor 1, four-way solenoid valve 2, condenser 5, throttling arrangement 4, evaporimeter 3 and connecting tube thereof, the compressor passes through four-way solenoid valve and condenser, throttling arrangement, the evaporimeter is connected and is constituted refrigerant circulation system; the condenser is divided into n groups, n is a natural number larger than 1, one end of each group of condensers is connected with the output end of the compressor and the output end of the four-way electromagnetic valve through respective switch valves, and the other end of each group of condensers is connected with the two ends of the throttling device through respective switch valves.
As shown in fig. 2, the input end 11 and the output end 12 of the compressor are respectively connected to two input ends 21 and 22 of the four-way solenoid valve, the first output end 23 of the four-way solenoid valve is connected to one end of the evaporator 3, the other end of the evaporator 3 is connected to one end 4A of the throttling device, the second output end 24 of the four-way solenoid valve is connected to one end of the n sets of condensers through the first set of n switching valves, meanwhile, the compressed output end is also directly connected to one end of the n sets of condensers through the second set of n switching valves, the other end 3 sets of n switching valves of the n sets of condensers are connected to one end 4A of the throttling device, and the n sets of condensers are simultaneously connected to the other end 4B of the throttling device.
The switch valve of the utility model adopts an electromagnetic valve, the n groups of condensers comprise a first group of condenser 51, a second group of condenser 52 and an nth group of condenser 53, and the respective switch valve comprises an electromagnetic valve 1-1, an electromagnetic valve 2-1, an electromagnetic valve n-1, an electromagnetic valve 1-2, an electromagnetic valve 2-2, an electromagnetic valve n-2, an electromagnetic valve 1-3, an electromagnetic valve 2-3, an electromagnetic valve n-3, an electromagnetic valve 1-4, an electromagnetic valve 2-4 and an electromagnetic valve n-4; the specific connection structure of each group of condensers through respective switch valves is as follows:
one end 51A of the first group of condensers 51 is connected with the second output end 24 of the four-way electromagnetic valve through the electromagnetic valve 1-1 and is directly connected with the output end 12 of the compressor through the electromagnetic valve 1-2; the other end 51B of the first group of condensers 51 is connected with one end 4A of the throttling device through the electromagnetic valves 1-3 and is connected with the other end 4B of the throttling device through the electromagnetic valves 1-4;
one end 52A of the second group of condensers 52 is connected with the second output end 24 of the four-way solenoid valve through the solenoid valve 2-1 and is directly connected with the output end 12 of the compressor through the solenoid valve 2-2; the other end 52B of the second group of condensers 52 is connected with one end 4A of the throttling device through an electromagnetic valve 2-3 and is connected with the other end 4B of the throttling device through an electromagnetic valve 2-4;
one end 53A of the nth group of condensers 53 is connected with the second output end 24 of the four-way electromagnetic valve through an electromagnetic valve n-1 and is directly connected with the output end 12 of the compressor through an electromagnetic valve n-2; the other end 53B of the nth group of condensers 53 is connected to both one end 4A of the throttling device through a solenoid valve n-3 and the other end 4B of the throttling device through a solenoid valve n-4.
The input end 11 and the output end 12 of the compressor are respectively connected with two input ends 21 and 22 of the four-way electromagnetic valve, two output ends 23 and 24 of the four-way electromagnetic valve are respectively connected with one end of the evaporator 3, the electromagnetic valve 1-1, the electromagnetic valve 2-1 and the electromagnetic valve n-1, and the other end of the evaporator is connected with one end 4A of the throttling device.
Example 1:
as shown in fig. 2, the condensers are divided into 1, 2 and n groups, and during defrosting of the first group, the on-off states of the electromagnetic valves are as follows:
| solenoid valve numbering | 1-1 | 1-2 | 1-3 | 1-4 | 2-1 | 2-2 | 2-3 | 2-4 | n-1 | n-2 | n-3 | n-4 |
| During defrosting of the first group | Closing device | Opening device | Opening device | Closing device | Opening device | Closing device | Closing device | Opening device | Opening device | Closing device | Closing device | Opening device |
Example 2:
as shown in fig. 2, the condensers are divided into 1, 2 and n groups, and during defrosting in the second group, the on-off states of the electromagnetic valves are as follows:
| solenoid valve numbering | 1-1 | 1-2 | 1-3 | 1-4 | 2-1 | 2-2 | 2-3 | 2-4 | n-1 | n-2 | n-3 | n-4 |
| During defrosting of the second group | Opening device | Closing device | Closing device | Opening device | Closing device | Opening device | Opening device | Closing device | Opening device | Closing device | Closing device | Opening device |
Example 3:
as shown in fig. 2, the condensers are divided into 1, 2, and n groups, and when defrosting is performed in the nth group, the solenoid valves are switched as follows:
| solenoid valve numbering | 1-1 | 1-2 | 1-3 | 1-4 | 2-1 | 2-2 | 2-3 | 2-4 | n-1 | n-2 | n-3 | n-4 |
| During defrosting of group n | Opening device | Closing device | Closing device | Opening device | Opening device | Closing device | Closing device | Opening device | Closing device | Opening device | Opening device | Closing device |
Example 4:
as shown in fig. 2, the condensers are divided into 1, 2, and n groups, and during defrosting of the first and second groups, the on-off states of the electromagnetic valves are as follows:
| solenoid valve numbering | 1-1 | 1-2 | 1-3 | 1-4 | 2-1 | 2-2 | 2-3 | 2-4 | n-1 | n-2 | n-3 | n-4 |
| During defrosting of the first and second groups | Closing device | Opening device | Opening device | Closing device | Closing device | Opening device | Opening device | Closing device | Opening device | Closing device | Closing device | Opening device |
Example 5:
as shown in fig. 2, when the condensers are divided into 1, 2, and n groups, and the second and n groups defrost, the solenoid valves are switched as follows:
| solenoid valve numbering | 1-1 | 1-2 | 1-3 | 1-4 | 2-1 | 2-2 | 2-3 | 2-4 | n-1 | n-2 | n-3 | n-4 |
| During defrosting of the second and third groups | Opening device | Closing device | Closing device | Opening device | Closing device | Opening device | Opening device | Closing device | Closing device | Opening device | Opening device | Closing device |
Example 6:
as shown in fig. 2, the condensers are divided into 1, 2, and n groups, and when the first and n groups defrost, the solenoid valves are switched as follows:
| solenoid valve numbering | 1-1 | 1-2 | 1-3 | 1-4 | 2-1 | 2-2 | 2-3 | 2-4 | n-1 | n-2 | n-3 | n-4 |
| During defrosting of the first and third groups | Opening device | Closing device | Closing device | Opening device | Closing device | Opening device | Opening device | Closing device | Closing device | Opening device | Opening device | Closing device |
Claims (4)
1. An air conditioner defrost system characterized in that: the system comprises a compressor, a four-way electromagnetic valve, a condenser, a throttling device, an evaporator and a connecting pipeline thereof, wherein the compressor is connected with the condenser, the throttling device and the evaporator through the four-way electromagnetic valve to form a refrigerant circulating system; the condenser is divided into n groups, n is a natural number larger than 1, one end of each group of condensers is connected with the output end of the compressor and the output end of the four-way electromagnetic valve through respective switch valves, and the other end of each group of condensers is connected with the two ends of the throttling device through respective switch valves.
2. An air conditioner defrost system as in claim 1 wherein: the input end and the output end of the compressor are respectively connected with two input ends of a four-way electromagnetic valve, one output end of the four-way electromagnetic valve is connected with one end of an evaporator, the other end of the evaporator is connected with one end of a throttling device, the other output end of the four-way electromagnetic valve is respectively connected with one end of n groups of condensers through a first group of n switch valves, and meanwhile, the compressed output end is also respectively connected with one end of the n groups of condensers directly through a second group of n switch valves; the other ends of the n groups of condensers are respectively connected with one end of the throttling device through a third group of n switch valves, and the other ends of the n groups of condensers are simultaneously connected with the other end of the throttling device through a fourth group of n switch valves.
3. An air conditioner defrost system as in claim 1 wherein: the switch valves adopt electromagnetic valves, the n groups of condensers comprise a first group of condensers, a second group of condensers and an nth group of condensers, and the respective switch valves comprise electromagnetic valves 1-1, 2-1, n-1, 1-2, 2-2, n-2, 1-3, 2-3, n-3, 1-4, 2-4 and n-4; the connection structure of each group of condensers through respective switch valves is as follows:
one end of the first group of condensers is connected with the output end of the four-way electromagnetic valve through the electromagnetic valve 1-1 and is directly connected with the output end of the compressor through the electromagnetic valve 1-2; the other end of the first group of condensers is connected with one end of the throttling device through an electromagnetic valve 1-3 and is also connected with the other end of the throttling device through an electromagnetic valve 1-4;
one end of the second group of condensers is connected with the output end of the four-way electromagnetic valve through the electromagnetic valve 2-1 and is directly connected with the output end of the compressor through the electromagnetic valve 2-2; the other end of the second group of condensers is connected with one end of the throttling device through an electromagnetic valve 2-3 and is also connected with the other end of the throttling device through an electromagnetic valve 2-4;
one end of the nth group of condensers is connected with the output end of the four-way electromagnetic valve through an electromagnetic valve n-1 and is directly connected with the output end of the compressor through an electromagnetic valve n-2; the other end of the nth group of condensers is connected with one end of the throttling device through an electromagnetic valve n-3 and the other end of the throttling device through an electromagnetic valve n-4.
4. An air conditioner defrost system as in claim 3 wherein: the input end and the output end of the compressor are respectively connected with two input ends of a four-way electromagnetic valve, two output ends of the four-way electromagnetic valve are respectively connected with one end of the evaporator and the electromagnetic valve 1-1, the electromagnetic valve 2-1 and the electromagnetic valve n-1, and the other end of the evaporator is connected with a throttling device.
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| CN202022371215.8U CN213480642U (en) | 2020-10-22 | 2020-10-22 | Air conditioner defrosting system |
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| CN202022371215.8U CN213480642U (en) | 2020-10-22 | 2020-10-22 | Air conditioner defrosting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112146299A (en) * | 2020-10-22 | 2020-12-29 | 长沙远大住宅工业集团股份有限公司 | Air conditioner defrosting system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112146299A (en) * | 2020-10-22 | 2020-12-29 | 长沙远大住宅工业集团股份有限公司 | Air conditioner defrosting system and method |
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