CN210345948U - Air conditioner capable of preventing frosting or keeping heating operation for defrosting for long time - Google Patents
Air conditioner capable of preventing frosting or keeping heating operation for defrosting for long time Download PDFInfo
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- CN210345948U CN210345948U CN201920536511.3U CN201920536511U CN210345948U CN 210345948 U CN210345948 U CN 210345948U CN 201920536511 U CN201920536511 U CN 201920536511U CN 210345948 U CN210345948 U CN 210345948U
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Abstract
The utility model relates to an air conditioning technology field specifically is an air conditioner with long-time not frosting or keep heating operation defrosting, including air condensing units, air condensing units embeds there is compressor, cross valve, outer heat exchanger, reservoir and supercooling tube bank, is equipped with proportional refrigerant flow control valve between compressor and the cross valve, and electronic expansion valve is inserted to the pipeline between outer heat exchanger and the reservoir, proportional refrigerant flow control valve's exit end and electronic expansion valve and the pipeline fixed connection between the outer heat exchanger. The utility model discloses a proportional type refrigerant flow control valve control compressor exhaust high temperature high pressure refrigerant directly gets into outer quick-witted heat exchanger, reaches the effect of heating up the defrosting for outer quick-witted heat exchanger, and whole interior outer quick-witted system still keeps the operation of heating simultaneously, finally reaches the effect that heats not defrosting or defrosting do not cool down, promotes the comfort level that the air conditioner heated.
Description
Technical Field
The utility model relates to an air conditioner technical field specifically is an air conditioner with long-time not frosting or keep heating the operation defrosting.
Background
In the air-cooling heat pump machine, during heating operation, the outdoor heat exchanger serves as an evaporator, and the evaporation temperature also decreases as the outdoor air temperature decreases, so that the heat exchange surface is frosted. The air contains moisture which, if contacted by objects below the dew point, condenses as water droplets. Generally, if the outdoor temperature is below 5 ℃, the evaporation temperature during heating operation is-5 to 10 ℃, and the moisture in the air is directly condensed into frost when contacting the outdoor heat exchanger.
Once frost is formed, the amount of air passing through is reduced, the heat transfer efficiency is reduced, the evaporation temperature is also reduced, and the frost formation of the outdoor heat exchanger is further increased, so that the outdoor unit must be subjected to the defrosting control at this time. After the defrosting control is performed, the heating cycle operation of the air conditioner is changed into a refrigeration cycle, so that the indoor unit is shut down, the indoor temperature is reduced, and the user experience is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an air conditioner with long-time not frosting or keep heating the operation defrosting to solve the problem that provides in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: an air conditioner capable of preventing frost formation or maintaining heating operation and defrosting for a long time comprises an air conditioner outdoor unit, wherein a compressor, a four-way valve, an outdoor unit heat exchanger, a liquid storage device and a supercooling pipe group are arranged in the air conditioner outdoor unit, the outlet end of the outdoor unit heat exchanger is connected with the inlet end pipeline of the liquid storage device, the outlet end of the liquid storage device is connected with the supercooling pipe group, the supercooling pipe group is connected with a liquid pipe pipeline, the supercooling pipe group is connected with the compressor pipeline, the outlet end of the compressor is fixedly connected with an exhaust pipe, the exhaust pipe is fixedly connected with a D pipe of the four-way valve, a pipeline between the exhaust pipe and the four-way valve is fixedly connected with the inlet end of a proportional refrigerant flow control valve, a pipeline between the outdoor unit heat exchanger and the liquid storage device is connected with an electronic, the pipe C of the four-way valve is fixedly connected with the air pipe, the pipe S of the four-way valve is connected with the inlet end pipeline of the compressor, and the pipe E of the four-way valve is fixedly connected with the inlet end of the outer machine heat exchanger.
Preferably, the S pipe of the four-way valve is connected with the inlet end pipeline of the gas-liquid separator, the outlet end of the gas-liquid separator is connected with the inlet end pipeline of the compressor, the surface of the gas-liquid separator is coated with a corrosion-resistant anti-static coating, and the supercooling pipe set is connected with a pipeline between the gas-liquid separator and the S pipe of the four-way valve.
Preferably, a supercooling coil is arranged between the external machine heat exchanger and the electronic expansion valve, an inlet end pipeline of the supercooling coil is connected with an outlet end of the external machine heat exchanger, an outlet end pipeline of the supercooling coil is connected with an inlet end of the electronic expansion valve, and an outlet end of the proportional refrigerant flow control valve is fixedly connected with a pipeline between the electronic expansion valve and the supercooling coil.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a proportional type refrigerant flow control valve control compressor exhaust high temperature high pressure refrigerant directly gets into outer quick-witted heat exchanger, reaches the effect of heating up the defrosting for outer quick-witted heat exchanger, and whole interior outer quick-witted system still keeps the operation of heating simultaneously, finally reaches the effect that heats not defrosting or defrosting do not cool down, promotes the comfort level that the air conditioner heated.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the air conditioner comprises an air conditioner outdoor unit 1, a compressor 2, an exhaust pipe 3, a four-way valve 4, an air pipe 5, a refrigerant flow control valve 6 in proportion, an electronic expansion valve 7, an external unit heat exchanger 8, a liquid accumulator 9, a supercooling pipe group 10, a gas-liquid separator 11, a supercooling coil 12 and a liquid pipe 13.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: an air conditioner which can not frost or keep heating operation for defrosting for a long time comprises an air conditioner outdoor unit 1, wherein a compressor 2, a four-way valve 4, an outdoor unit heat exchanger 8, a liquid storage device 9 and a supercooling pipe group 10 are arranged in the air conditioner outdoor unit 1.
An outlet end of the compressor 2 is fixedly connected with an exhaust pipe 3, the exhaust pipe 3 is fixedly connected with a D pipe of the four-way valve 4, a pipeline between the exhaust pipe 3 and the four-way valve 4 is fixedly connected with an inlet end of a proportional refrigerant flow control valve 6, a pipeline between an outer machine heat exchanger 8 and a liquid storage device 9 is connected with an electronic expansion valve 7, an outlet end of the proportional refrigerant flow control valve 6 is fixedly connected with the electronic expansion valve 7 and a pipeline between the outer machine heat exchanger 8, and a C pipe of the four-way valve 4 is fixedly connected with a gas pipe 5. Wherein, the proportional refrigerant flow control valve 6 is a proportional flow valve of VB-7200 produced by Xuan Yi company, and the proportional refrigerant flow control valve 6 is connected with a pipeline flange between the exhaust pipe 3 and the four-way valve 4. The electronic expansion valve 7 is a BAE-5-HCA type normal-pressure high-temperature electronic expansion valve produced by Emerson, and the electronic expansion valve 7 is in threaded connection with a pipeline between the outer machine heat exchanger 8 and the liquid storage device 9.
The S pipe of the four-way valve 4 is connected with the inlet end pipeline of the gas-liquid separator 11, the outlet end of the gas-liquid separator 11 is connected with the inlet end pipeline of the compressor 2, the gas-liquid separator 11 is used for preventing the compressor 2 from being damaged by liquid impact caused by the fact that a liquid refrigerant is sucked into an air inlet of the compressor 2, and the corrosion-resistant anti-static coating is coated on the surface of the gas-liquid separator 11 to prevent a shell of the gas-liquid separator 11. The subcooling tube group 10 is connected to a line between the gas-liquid separator 11 and the S-tube of the four-way valve 4. The supporting plate is welded on the outer shell of the air conditioner outdoor unit 1, and the base of the compressor 2 and the shell of the gas-liquid separator 11 are fixedly connected with the outer shell of the air conditioner outdoor unit 1 in a bolt connection mode.
A supercooling coil 12 is arranged between the outer machine heat exchanger 8 and the electronic expansion valve 7, an inlet end pipeline of the supercooling coil 12 is connected with an outlet end of the outer machine heat exchanger 8, and the shell of the outer machine heat exchanger 8 and the shell of the supercooling coil 12 are fixedly connected with the shell of the air conditioner outdoor machine 1 in a bolt connection mode. The outlet end of the supercooling coil (12) is connected with the inlet end of the electronic expansion valve 7 through a pipeline, and the outlet end of the proportional refrigerant flow control valve 6 is fixedly connected with a pipeline between the electronic expansion valve 7 and the supercooling coil (12).
The E pipe of the four-way valve 4 is fixedly connected with the inlet end of the outer machine heat exchanger 8, the outlet end of the outer machine heat exchanger 8 is connected with the inlet end pipeline of the liquid accumulator 9, the outlet end of the liquid accumulator 9 is connected with the supercooling pipe group 10, the liquid accumulator 9 is used for storing the refrigerant and supplying the refrigerant to the supercooling pipe group 10 continuously, and the refrigerant which is not cooled completely is cooled again and completely reaches the liquid state. The outer shell of the liquid accumulator 9 and the outer shell of the supercooling pipe group 10 are fixedly connected with the outer shell of the air conditioner outdoor unit 1 in a bolt connection mode. The supercooling pipe group 10 is connected with a liquid pipe 13 in a pipeline mode. The air pipe 5 and the liquid pipe 13 are connected with a heat exchanger pipeline of the indoor unit.
The utility model discloses a 2 exhaust high temperature high pressure refrigerants of proportional type refrigerant flow control valve 6 control compressor directly get into outer quick-witted heat exchanger 8, reach the effect of the defrosting of rising temperature for outer quick-witted heat exchanger 8, whole interior outer quick-witted system still keeps the operation of heating simultaneously, finally reaches the effect that heats not defrosting or defrosting do not cool down, promotes the comfort level that the air conditioner heated.
The air conditioner constituted by the outdoor unit 1 may be a multi-split system, or a unit system, or an air source heat pump system.
The proportional refrigerant flow control valve 6 has two embodiments:
example 1
And opening the proportional refrigerant flow control valve 6 intermittently according to a certain proportion to heat the outer heat exchanger 8, so that the temperature of the outer heat exchanger 8 does not reach the frosting temperature point for a long time. When the temperature of the outer machine heat exchanger 8 is 5 ℃ higher than the defrosting temperature point, half of the opening of the proportional refrigerant flow control valve 6 is opened to heat the outer machine heat exchanger 8, and when the temperature of the outer machine heat exchanger 8 is raised to be higher than 12 ℃ or the opening time reaches 5min, the outer machine heat exchanger 8 is withdrawn, so that the outer machine heat exchanger 8 can operate for a long time without frosting, and the outdoor air conditioner 1 can not defrost for a long time.
Example 2
After the air conditioner outdoor unit 1 reaches the frosting temperature point, the air conditioner outdoor unit 1 still keeps the heating operation state, at the moment, the proportional refrigerant flow control valve 6 is opened completely to heat the outer unit heat exchanger 8 for defrosting, the temperature of the outer unit heat exchanger 8 is increased to be higher than 12 ℃ or after the proportional refrigerant flow control valve 6 is opened for 10min, defrosting is finished, and the proportional refrigerant flow control valve 6 is closed.
The above are two control methods of the proportional refrigerant flow control valve 6 in defrosting, and simultaneously, in order to ensure the defrosting effect, the control methods of other parts of the external unit are as follows:
1. the rotational speed of the compressor 2 is increased to the maximum rotational speed;
2. the four-way valve 4 keeps an ON state (heating state) unchanged;
3. an external fan of the air conditioner outdoor unit 1 is controlled to operate according to heating low pressure;
4. the electronic expansion valve 7 is operated according to the normal control of heating;
5. the indoor machine components are normally controlled to operate according to heating.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides an air conditioner with long-time defrosting that does not frost or keep heating operation, includes air condensing units (1), air condensing units (1) embeds there are compressor (2), cross valve (4), outer quick-witted heat exchanger (8), reservoir (9) and super-cooled nest of tubes (10), the exit end of outer quick-witted heat exchanger (8) and the entrance point pipe connection of reservoir (9), the exit end and the pipe connection of crossing cold nest of tubes (10) of reservoir (9), cross cold nest of tubes (10) and liquid pipe (13) pipe connection, cross cold nest of tubes (10) and compressor (2) pipe connection, its characterized in that: the air conditioner is characterized in that an outlet end of the compressor (2) is fixedly connected with an exhaust pipe (3), the exhaust pipe (3) is fixedly connected with a D pipe of the four-way valve (4), a pipeline between the exhaust pipe (3) and the four-way valve (4) is fixedly connected with an inlet end of a proportional refrigerant flow control valve (6), an electronic expansion valve (7) is connected into a pipeline between the outer machine heat exchanger (8) and a liquid storage device (9), an outlet end of the proportional refrigerant flow control valve (6) is fixedly connected with the electronic expansion valve (7) and a pipeline between the outer machine heat exchanger (8), a C pipe of the four-way valve (4) is fixedly connected with an air pipe (5), an S pipe of the four-way valve (4) is connected with an inlet end pipeline of the compressor (2), and an E pipe of the four-way valve (.
2. An air conditioner having a function of defrosting without frosting or maintaining a heating operation for a long time according to claim 1, wherein: an S pipe of the four-way valve (4) is connected with an inlet end pipeline of the gas-liquid separator (11), an outlet end of the gas-liquid separator (11) is connected with an inlet end pipeline of the compressor (2), the surface of the gas-liquid separator (11) is coated with a corrosion-resistant anti-static coating, and the supercooling pipe group (10) is connected with a pipeline between the gas-liquid separator (11) and the S pipe of the four-way valve (4).
3. An air conditioner having a function of defrosting without frosting or maintaining a heating operation for a long time according to claim 1, wherein: a supercooling coil (12) is arranged between the external machine heat exchanger (8) and the electronic expansion valve (7), an inlet end pipeline of the supercooling coil (12) is connected with an outlet end of the external machine heat exchanger (8), an outlet end pipeline of the supercooling coil (12) is connected with an inlet end of the electronic expansion valve (7), and an outlet end of the proportional refrigerant flow control valve (6) is fixedly connected with a pipeline between the electronic expansion valve (7) and the supercooling coil (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920536511.3U CN210345948U (en) | 2019-04-19 | 2019-04-19 | Air conditioner capable of preventing frosting or keeping heating operation for defrosting for long time |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920536511.3U CN210345948U (en) | 2019-04-19 | 2019-04-19 | Air conditioner capable of preventing frosting or keeping heating operation for defrosting for long time |
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| CN210345948U true CN210345948U (en) | 2020-04-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131917A (en) * | 2019-04-19 | 2019-08-16 | 三菱重工海尔(青岛)空调机有限公司 | A kind of air-conditioning with long-time frost-free or holding heating operation defrosting |
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2019
- 2019-04-19 CN CN201920536511.3U patent/CN210345948U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131917A (en) * | 2019-04-19 | 2019-08-16 | 三菱重工海尔(青岛)空调机有限公司 | A kind of air-conditioning with long-time frost-free or holding heating operation defrosting |
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