CN111520938A - Refrigerant damping valve, control method and air conditioner - Google Patents
Refrigerant damping valve, control method and air conditioner Download PDFInfo
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- CN111520938A CN111520938A CN202010395189.4A CN202010395189A CN111520938A CN 111520938 A CN111520938 A CN 111520938A CN 202010395189 A CN202010395189 A CN 202010395189A CN 111520938 A CN111520938 A CN 111520938A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Lift Valve (AREA)
Abstract
The invention provides a refrigerant damping valve, which is used for adjusting the amount of refrigerant entering an indoor heat exchanger of an air conditioner during heating and defrosting of the air conditioner, and comprises the following components: the valve comprises a first connecting pipe (1), an outer valve body (2), an inner valve body (3), a valve core (4), a second connecting pipe (5) and a bypass pipe (6); one end of the first connecting pipe (1) is communicated with one end of the outer valve body (2), one end of the second connecting pipe (5) is communicated with the other end of the outer valve body (2), and two ends of the bypass pipe (6) are communicated with two ends of the outer valve body (2); inside outer valve body (2) were located in interior valve body (3), inside interior valve body (3) were located in case (4), through-hole (31) have been seted up with first takeover (1) and the relative both ends of second takeover (5) in interior valve body (3), through-hole (31) have also been seted up to interior valve body (3) lateral wall, and this refrigerant damping valve avoids the impact of high-pressure refrigerant indoor heat exchanger inner wall, avoids the air conditioner to vibrate by a wide margin, eliminates abnormal sound.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a refrigerant damping valve, a control method and an air conditioner.
Background
When a heat pump type room air conditioner (hereinafter referred to as an air conditioner) heats and defrosts, because of the switching of the four-way valve, a refrigerant in the air conditioner system can instantly and reversely flow, and the formed high-pressure refrigerant impacts the inner wall of an indoor heat exchanger of the air conditioner, so that the air conditioner generates large vibration and is accompanied with obvious abnormal sound, and the use comfort of a user is seriously influenced. And the time sequence is switched by simply controlling the four-way valve, so that the four-way valve is switched after the refrigerant pressure of the air conditioner system tends to be balanced, the shutdown time of the air conditioner can be prolonged, the indoor temperature is greatly reduced, large fluctuation exists, and the user experience is influenced.
Disclosure of Invention
The invention mainly aims to provide a refrigerant damping valve, a control method and an air conditioner, which are used for at least partially solving the technical problems.
In order to solve the above problems, an aspect of the present invention provides a refrigerant damping valve for adjusting an amount of refrigerant entering an indoor heat exchanger of an air conditioner during heating and defrosting of the air conditioner, the refrigerant damping valve including: the valve comprises a first connecting pipe, an outer valve body, an inner valve body, a valve core, a second connecting pipe and a bypass pipe; one end of the first connecting pipe is communicated with one end of the outer valve body, one end of the second connecting pipe is communicated with the other end of the outer valve body, and two ends of the bypass pipe are communicated with two ends of the outer valve body; the inner valve body is arranged inside the outer valve body, the valve core is arranged inside the inner valve body, through holes are formed in the two ends, opposite to the first connecting pipe and the second connecting pipe, of the inner valve body, and the through holes are also formed in the side wall of the inner valve body.
From this, when the air conditioner got into and heats the defrosting mode, this damping valve structure can prevent the cross valve when switching, and the inside refrigerant of air conditioning system's reverse flow in the twinkling of an eye is under not influencing air conditioner refrigerant normal pressure balance for the refrigerant slowly gets into the indoor heat exchanger of air conditioner, thereby avoids the impact of high pressure refrigerant indoor heat exchanger inner wall, avoids the air conditioner great vibration to appear, eliminates abnormal sound, improves user's travelling comfort.
Optionally, the refrigerant damping valve is disposed between a throttling element and a stop valve in an outdoor unit of the air conditioner, the other end of the first connection pipe is communicated with the stop valve, and the other end of the second connection pipe is communicated with the throttling element.
Therefore, the position of the refrigerant damping valve in the air conditioner is reasonably designed, so that the refrigerant damping valve can play a role to a greater extent, and the refrigerant can be better delayed from entering the indoor heat exchanger.
Optionally, the predetermined position between the outer valve body sidewall and the inner valve body sidewall is sealed.
Optionally, the middle of the outer valve body sidewall is roll sealed to the middle of the inner valve body sidewall.
Therefore, the inner valve body can be stably fixed on the side wall of the outer valve body through sealing.
Optionally, a gap with a preset size is formed between the valve core and the inner valve body, and the gap is used for allowing a preset amount of refrigerant to enter the inner valve body through the through hole opposite to the second connecting pipe when the valve core blocks the through hole opposite to the second connecting pipe in the inner valve body.
Therefore, the gap with the preset size can ensure that partial refrigerant enters the indoor heat exchanger under the normal state of the air conditioner, and the normal pressure balance of the refrigerant of the air conditioner is ensured.
Optionally, a preset gap is formed between the side wall of the outer valve body and the side wall of the inner valve body except for a sealing position, and the preset gap is used for allowing a preset amount of refrigerant to enter the inner valve body through the through hole in the side wall of the inner valve body when the valve core blocks the through hole in the inner valve body opposite to the second connecting pipe.
Therefore, the preset gap can ensure that partial refrigerant enters the indoor heat exchanger under the normal state of the air conditioner, and further ensure the normal refrigerant pressure balance of the air conditioner.
Optionally, two through holes are symmetrically formed in the side wall of the inner valve body.
Optionally, the through hole is arranged at one side of the preset position close to the second connecting pipe.
Therefore, the positions and the number of the through holes in the side wall of the inner valve body are reasonably designed, so that the normal pressure balance of the refrigerant under the normal state of the air conditioner is ensured.
The invention also provides a control method based on the refrigerant damping valve, the control method is used for controlling the amount of refrigerant entering an indoor heat exchanger of an air conditioner during heating and defrosting of the air conditioner, and the control method comprises the following steps: judging whether the air conditioner enters a defrosting mode or not; if yes, switching a defrosting four-way valve to enable a valve core to block a through hole of a refrigerant damping valve close to a stop valve under the condition that the refrigerant damping valve is connected with a throttling element in the air conditioner outdoor unit and the pressure difference is obtained between two ends of the stop valve; after a preset time period, judging whether the air conditioner is defrosted completely; if so, switching the four-way valve to enable the valve core to block the through hole of the refrigerant damping valve close to the throttling element under the action of gravity.
The control method has the advantages of the refrigerant damping valve, and the description is omitted.
The invention also provides an air conditioner which comprises the refrigerant damping valve, and the air conditioner executes the control method based on the refrigerant damping valve. The air conditioner has the advantages of the refrigerant damping and control method, and the details are not repeated herein.
Drawings
Fig. 1 schematically shows a structure diagram of a refrigerant damper valve according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram showing the position of the valve spool when the four-way valve according to the first embodiment of the present invention is switched;
fig. 3 schematically illustrates a refrigerant flow diagram when the air conditioner provided by the first embodiment of the invention is not defrosted;
fig. 4 schematically shows a flowchart of a control method provided by the second embodiment of the present invention.
Detailed Description
In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the problem of indoor abnormal sound when the air conditioner heats and defrosts, the refrigerant damping valve is introduced into the air conditioner, and reasonable time sequence control is combined, so that the refrigerant is delayed to enter the indoor heat exchanger when the defrosting four-way valve is switched, and the refrigerant slowly entering the evaporator can not generate strong impact to generate vibration of the air conditioner and generate abnormal sound under the condition of not influencing the normal pressure balance of the refrigerant of the air conditioner, and finally, the use comfort of a user is improved. The following detailed description will proceed with reference being made to specific embodiments.
Example one
Fig. 1 schematically illustrates a structure diagram of a refrigerant damper valve according to a first embodiment of the present invention, and as shown in fig. 1, the refrigerant damper valve may include the following structures:
the valve comprises a first connecting pipe 1, an outer valve body 2, an inner valve body 3, a valve core 4, a second connecting pipe 5 and a bypass pipe 6.
One end of the first connection pipe 1 is communicated with one end of the outer valve body 2 (upper end in the direction shown in fig. 1), one end of the second connection pipe 5 is communicated with the other end of the outer valve body 2 (upper end in the direction shown in fig. 1), and both ends of the bypass pipe 6 are communicated with both ends of the outer valve body 2 (upper and lower ends in the direction shown in fig. 1).
The inner valve body 3 is arranged inside the outer valve body 2, the valve core 4 is arranged inside the inner valve body 3, and the valve core 4 can move up and down inside the inner valve body 3 (in the direction shown in fig. 1). The inner valve body 3 and the first connecting pipe 1 and the second connecting pipe 5 are provided with through holes 31 at two opposite ends, and the side wall of the inner valve body 3 is also provided with through holes 31. In a feasible manner of this embodiment, two through holes 31 are symmetrically formed on the side wall of the inner valve body 3.
The shape of the outer valve body 2 and the inner valve body 3, namely the valve core 4, can be a hollow cylindrical structure or a hollow cuboid structure, and the specific shape can be determined according to the position environment of the refrigerant damping valve in the air conditioner. For example, in a certain type of air conditioner, because the position for installing the refrigerant damping valve is limited, when the refrigerant damping valve is set to be a hollow cuboid structure, peripheral edges and corners can interfere with other parts of the air conditioner, so that the air conditioner cannot be installed, and at the moment, the problem can be solved by selecting a hollow cylindrical structure.
The first connecting pipe 1 and the second connecting pipe 5 are used for connecting with an air conditioner. In a feasible manner of this embodiment, the refrigerant damping valve is disposed between a throttling element and a stop valve in an outdoor unit of an air conditioner, and the other end of the first connecting pipe 1 is communicated with the stop valve, that is, the first connecting pipe 1 corresponds to a stop valve connecting pipe, and the other end of the second connecting pipe 5 is communicated with the throttling element, that is, the second connecting pipe 5 corresponds to a throttling element. The refrigerant flows into the refrigerant damping valve from the second connecting pipe 5 and flows out of the refrigerant damping valve from the first connecting pipe 1.
In a feasible mode of this embodiment, the preset position between the side wall of the outer valve body 2 and the side wall of the inner valve body 3 is sealed (as shown in a in fig. 1), the inner valve body 3 can be fixed on the outer valve body 2 by sealing, and because the two ends of the outer valve body 2 are connected with the air conditioner through the first connecting pipe 1 and the second connecting pipe 5, the inner valve body 3 is indirectly fixed, so that when the valve core 4 moves up and down in the inner valve body 3, the position of the inner valve body 3 is stable. In this embodiment, the middle of the side wall of the outer valve body 2 and the middle of the side wall of the inner valve body 3 are sealed, and the specific preset position can be selected according to actual requirements, which is not limited in the present invention. The sealing can be performed by a rolling sealing mode, the specific sealing mode can be determined according to the actual situation, and the invention is not limited. In a feasible manner of this embodiment, the through hole 31 is provided at a side of the predetermined position close to the second adapter 5.
In a feasible manner of this embodiment, a gap with a preset size is provided between the valve core 4 and the inner valve body 3, and the gap is used to allow a preset amount of refrigerant to enter the inner valve body 3 through the through hole 31 opposite to the second connection pipe 5 when the valve core 4 blocks the through hole 31 opposite to the second connection pipe 5 on the inner valve body 3. The refrigerant damping valve has the function that when the air conditioner enters a heating defrosting mode, the refrigerant slowly enters the indoor heat exchanger of the air conditioner, so that the size of the gap between the valve core 4 and the inner valve body 3 is reasonable and overlarge, even if the valve core 4 blocks the through hole 31, opposite to the second connecting pipe 5, in the inner valve body 3, the amount of the refrigerant entering the indoor heat exchanger from the refrigerant damping valve is enough, and the effect that the refrigerant damping valve delays the refrigerant entering the indoor heat exchanger of the air conditioner is reduced to a great extent. The size is too small, so that although the effect of delaying the refrigerant from entering the indoor heat exchanger of the air conditioner by the refrigerant damping valve is ensured, the amount of the refrigerant entering the indoor heat exchanger from the refrigerant damping valve is too small due to the too small gap, and the normal refrigerant pressure balance of the air conditioner may not be ensured. In this embodiment, the gap between the valve core 4 and the inner valve body 3 can be set to 3 mm-8 mm.
In a feasible manner of this embodiment, a predetermined gap is provided between the side wall of the outer valve body 2 and the side wall of the inner valve body 3 except for the sealing position, and when the valve core 4 blocks the through hole 31 on the inner valve body 3 opposite to the second connecting pipe 5, the predetermined gap allows a predetermined amount of refrigerant to enter the inner valve body 3 through the through hole 31 on the side wall of the inner valve body 3. Similarly, the gap between the side wall of the outer valve body 2 and the side wall of the inner valve body 3 is reasonable in size and overlarge in size, even if the valve core 4 blocks the through hole 31, opposite to the second connecting pipe 5, in the inner valve body 3, the quantity of the refrigerant entering the indoor heat exchanger from the refrigerant damping valve is enough, and the effect that the refrigerant damping valve delays the refrigerant entering the indoor heat exchanger of the air conditioner is reduced to a great extent. The size is too small, so that although the effect of delaying the refrigerant from entering the indoor heat exchanger of the air conditioner by the refrigerant damping valve is ensured, the amount of the refrigerant entering the indoor heat exchanger from the refrigerant damping valve is too small due to the too small gap, and the normal refrigerant pressure balance of the air conditioner may not be ensured. In this embodiment, the gap between the side wall of the outer valve body 2 and the side wall of the inner valve body 3 can be set to 3 mm-8 mm.
The working principle of the refrigerant damping valve is as follows:
when the air conditioner enters a defrosting mode and the four-way valve is switched, a large pressure difference is formed at two ends of the refrigerant damping valve instantly, the valve core 4 is driven to prop up the through hole 31 (shown in figure 2) at the top end of the inner valve body 3 rapidly, and only a small amount of refrigerant enters the upper cavity of the refrigerant damping valve and the heat exchanger of the indoor unit of the air conditioner from the bypass pipe 6. Because the refrigerant is limited to flow into the indoor heat exchanger instantly, the indoor heat exchanger does not produce violent refrigerant impact vibration and abnormal sound at the switching instant of the four-way valve. After a period of time, the refrigerant enters the upper cavity of the refrigerant damping valve from the bypass pipe 6 to a certain degree, the pressure difference between the upper cavity and the lower cavity of the refrigerant damping valve is reduced, the valve core 4 returns to the bottom of the inner valve body 3 (as shown in fig. 1) under the action of gravity, the refrigerant slowly enters the indoor unit from the through hole 31 at the lower end of the inner valve body 3 and the bypass pipe 6, specifically, as shown in fig. 3, the refrigerant flows to the direction shown by the arrow in the figure, the through hole 31 is formed in the middle lower part of the inner valve body, and; and that is to say, be gapped between inner valve body 3 and the case 4, the clearance between outer valve body 2 lateral wall and the 3 lateral walls of inner valve body, part refrigerant also can flow in from the through-hole 31 of inner valve body 3 lower extreme, flow in along the clearance circulation of inner wall and case, part refrigerant flows along the clearance circulation between outer valve body and the inner valve body, also can flow in from the through-hole 31 in the middle part of inner valve body 3.
To sum up, the refrigerant damping valve structure that this embodiment provided can prevent when the cross valve switches, the inside refrigerant of air conditioning system reverse flow in the twinkling of an eye under not influencing the normal pressure balance of air conditioner refrigerant for the refrigerant slowly gets into the indoor heat exchanger of air conditioner, thereby avoids the impact of high pressure refrigerant indoor heat exchanger inner wall, avoids the air conditioner great vibration to appear, eliminates abnormal sound, improves user's travelling comfort. And in addition, under the normal state of the air conditioner, the refrigerant of the cold part can enter the indoor heat exchanger through the gap, so that the normal pressure balance of the refrigerant of the air conditioner is ensured.
Example two
The present embodiment provides a control method for a refrigerant damping valve according to the first embodiment, where the refrigerant damping valve is disposed between a throttling element and a stop valve of an outdoor unit of an air conditioner. The control method is used for controlling the amount of refrigerant entering an indoor heat exchanger of an air conditioner during heating and defrosting of the air conditioner, and as shown in fig. 4, the control method comprises the following steps:
s401, judging whether the air conditioner enters a defrosting mode or not.
If the air conditioner enters the defrost mode, operation S402 is performed.
And S402, switching the defrosting four-way valve to enable the valve core to block the through hole of the refrigerant damping valve close to the stop valve under the pressure difference between the throttling element in the refrigerant damping valve connected with the outdoor unit of the air conditioner and two ends of the stop valve.
And S403, judging whether the air conditioner is defrosted completely after a preset time period.
The defrosting is finished, and operation S404 is performed.
And S404, switching the four-way valve again to enable the valve core to block the through hole of the refrigerant damping valve close to the throttling element under the action of gravity.
The present embodiment provides a specific sequential control logic of the above method: judging whether defrosting conditions are met → 1min later, closing indoor unit auxiliary electric heating → compressor stopping → switching of four-way valve after 25s → compressor starting defrosting → defrosting exiting, stopping → switching of four-way valve after 25s → compressor starting running heating.
Therefore, when the four-way valve is switched, the refrigerant can be delayed from entering the indoor radiator by the method, so that the impact of the inner wall of the high-pressure refrigerant indoor heat exchanger is avoided, the air conditioner is prevented from generating larger vibration, abnormal sound is eliminated, and the user comfort is improved.
EXAMPLE III
The present embodiment provides an air conditioner, including the refrigerant damping valve, where the air conditioner executes the control method based on the refrigerant damping valve. The air conditioner has the advantages of the refrigerant damping and control method, and the details are not repeated herein.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The refrigerant damping valve is characterized in that the refrigerant damping valve is used for adjusting the amount of refrigerant entering an indoor heat exchanger of an air conditioner during heating and defrosting of the air conditioner, and comprises:
the valve comprises a first connecting pipe (1), an outer valve body (2), an inner valve body (3), a valve core (4), a second connecting pipe (5) and a bypass pipe (6);
one end of the first connecting pipe (1) is communicated with one end of the outer valve body (2), one end of the second connecting pipe (5) is communicated with the other end of the outer valve body (2), and two ends of the bypass pipe (6) are communicated with two ends of the outer valve body (2);
the inner valve body (3) is arranged inside the outer valve body (2), the valve core (4) is arranged inside the inner valve body (3), through holes (31) are formed in the two opposite ends of the inner valve body (3) and the first connecting pipe (1) and the second connecting pipe (5), and the through holes (31) are formed in the side wall of the inner valve body (3).
2. The refrigerant damping valve according to claim 1, wherein the refrigerant damping valve is disposed between a throttling element and a stop valve in an outdoor unit of the air conditioner, and the other end of the first connection pipe (1) is communicated with the stop valve and the other end of the second connection pipe (5) is communicated with the throttling element.
3. The refrigerant damper valve according to claim 2, characterized in that the predetermined position between the side wall of the outer valve body (2) and the side wall of the inner valve body (3) is sealed.
4. The refrigerant damping valve according to claim 2, wherein a gap of a predetermined size is provided between the valve core (4) and the inner valve body (3), and the gap is used for allowing a predetermined amount of refrigerant to enter the inner valve body (3) through the through hole (31) opposite to the second connection pipe (5) when the valve core (4) blocks the through hole (31) opposite to the second connection pipe (5) in the inner valve body (3).
5. A refrigerant damping valve according to claim 3, characterized in that a predetermined gap is provided between the side wall of the outer valve body (2) and the side wall of the inner valve body (3) except for the sealing position, and the predetermined gap is used for allowing a predetermined amount of refrigerant to enter the inner valve body (3) through the through hole (31) in the side wall of the inner valve body (3) when the valve core (4) blocks the through hole (31) in the inner valve body (3) opposite to the second connection pipe (5).
6. The refrigerant damper valve as claimed in claim 3, wherein the middle of the side wall of the outer valve body (2) is roll sealed with the middle of the side wall of the inner valve body (3).
7. The refrigerant damper valve according to any one of claims 1 to 6, wherein two of the through holes (31) are symmetrically formed in the side wall of the inner valve body (3).
8. The refrigerant damper valve according to claim 3, wherein the through hole (31) is provided at a predetermined position on a side close to the second connection pipe (5).
9. A control method for a refrigerant damper valve according to any one of claims 1 to 8, wherein the control method is used for controlling the amount of refrigerant entering an indoor heat exchanger of an air conditioner during heating and defrosting of the air conditioner, and the control method comprises the following steps:
judging whether the air conditioner enters a defrosting mode or not;
if yes, switching the defrosting four-way valve to enable the valve core (4) to block a through hole (31) of the refrigerant damping valve close to the stop valve under the pressure difference between the refrigerant damping valve and the two ends of the stop valve, wherein the throttling element is connected with the outdoor unit of the air conditioner;
after a preset time period, judging whether the air conditioner is defrosted completely;
if yes, the four-way valve is switched again, so that the valve core (4) blocks the through hole (31) of the refrigerant damping valve close to the throttling element under the action of gravity.
10. An air conditioner, characterized by comprising the refrigerant damper valve according to any one of claims 1 to 8, wherein the air conditioner executes the control method according to claim 9 based on the refrigerant damper valve.
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| CN202010395189.4A CN111520938B (en) | 2020-05-11 | 2020-05-11 | Refrigerant damping valve, control method and air conditioner |
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| CN202010395189.4A CN111520938B (en) | 2020-05-11 | 2020-05-11 | Refrigerant damping valve, control method and air conditioner |
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| CN107208817A (en) * | 2015-02-02 | 2017-09-26 | 株式会社鹭宫制作所 | Throttling arrangement and freeze cycle |
| CN204784788U (en) * | 2015-06-19 | 2015-11-18 | 重庆海旭机电设备制造有限公司 | Dumbbell shape choke valve |
| CN109804210A (en) * | 2016-11-02 | 2019-05-24 | 株式会社鹭宫制作所 | Throttling set and refrigerating circulation system |
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