CN201177422Y - Non-stop defrosting device for air conditioner - Google Patents
Non-stop defrosting device for air conditioner Download PDFInfo
- Publication number
- CN201177422Y CN201177422Y CNU2008200055786U CN200820005578U CN201177422Y CN 201177422 Y CN201177422 Y CN 201177422Y CN U2008200055786 U CNU2008200055786 U CN U2008200055786U CN 200820005578 U CN200820005578 U CN 200820005578U CN 201177422 Y CN201177422 Y CN 201177422Y
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- defrost
- air
- heat exchanger
- conditioner
- air conditioner
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Abstract
The utility model discloses a non-stop defrosting device for an air conditioner. A dividing loop with separate control is led out between a four-way valve and a low-pressure valve of a pipeline of the air conditioner; the other end of the dividing loop is connected to an inlet of an outdoor heat exchanger; and an electromagnetic dividing valve is arranged on the dividing loop. The non-stop defrosting device solves the frosting or freezing phenomenon of the domestic air conditioner in operation under the heating state, achieves the functions of energy economization and consumption reduction, and also avoids the excess loss of an electric appliance element.
Description
Technical field
The utility model relates to the air-conditioner technical field, a kind of specifically air-conditioner defrosting device.
Background technology
The operation principles of domestic air conditioner is as follows: 1, compressor process (isentropic procedure): by compressor, cold-producing medium is compressed into the gas of HTHP; 2, constant temperature process temperature drop enthalpy processes such as () again titles: the heat exchange function through heat exchanger is emitted heat, reduces the enthalpy of cold-producing medium, and the gas of HTHP is become liquid for pressing in the high temperature; 3, constant-enthalpy process (also journey throttling process):, the liquid of pressing in the high temperature is become the gas liquid mixture of low-temp low-pressure by throttle device such as capillary or electric expansion valves; 4, constant temperature process: pass through heat exchanger once more, the heat exchange function by heat exchanger absorbs airborne heat, reaches the effect that reduces air themperature.And then cold-producing medium transported back compressor, and carry out compression process once more, circulation reaches energy transfer process continuously and so forth.
Air-conditioner is divided into indoor units and outdoor unit, and what indoor units was mainly carried out is constant temperature process (2 or 4 state), realizes heat absorption (refrigerating operaton) and heat release (heating operation) process by the heat exchange function of heat exchanger.Outdoor unit is owing to be equipped with compressor, cross valve, heat exchanger and throttling arrangement, so 1,2,3 or 1,4,3 process of the system of realization.And the effect of the cross valve of outdoor unit is exactly the flow direction by the change system, and 2 processes that realize are finished at outdoor unit or indoor units.Cross valve place closed condition, 2 processes are finished at outdoor unit, and then indoor units is finished 4 endothermic processes, this air conditioner refrigerating of just often saying operation; Four energy threshold place openings, 2 finish in indoor units, then emit heat in the room, air-conditioning heating operation that this just often says.
When carrying out heating operation usually; the temperature of outside all is to carry out under relatively low situation; and the heat exchanger of outside is the 4th process of carrying out at this moment; also claim endothermic process; this will cause outdoor heat exchanger surface because temperature is crossed and lowly produced frosting or icing phenomenon, thereby has had a strong impact on the normal heat exchange effect of heat exchanger, circulates and so forth; will cause heat exchanger to absorb heat, air-conditioner can not normally heat maybe and can't heat.In order to solve the appearance of this problem in the process of heating, the ad hoc cover defrost control program of having counted when air-conditioner is heating operation is to reach the purpose that solves this type of.
The defrost function of prior art: when under the state of heating, moving, after boot running time reaches 60 minutes for the first time, air-conditioner begins to enter the defrost functional status, the complete machine shutdown is after 30 seconds, cross valve begins to commutate into closed condition, compressor starts starts operation automatically after 30 seconds, and the indoor and outdoor blower fan all is in not running status, at this moment the gas of the HTHP that comes out of compressor all flows to outdoor heat exchanger, remove ice or the white purpose that condenses in above the off-premises station heat exchanger thereby reach, uptime this moment was generally about 2 minutes.After operation finished, complete machine was shut down 30 seconds, and cross valve begins to commutate into opening, and compressor starts starts operation automatically after 30 seconds, enters into normal heating operation state.Will enter the defrost state after for the second time operation reaches 50 minutes, for the third time or the time of above operation be defrost in 40 minutes once.From above program, the whole defrost time is 4 minutes, stablizes defrost periods at 40 minutes once.And when defrost process, air-conditioner not only can not heat, and absorbs a part of heat (because this moment, 4 processes were carried out in the indoor) in addition in the room.
Though this kind defrost mode has solved the frosting problem of outdoor heat exchanger to a certain extent, but still exist many unreasonable design and practical problem.1,, thereby caused influencing actual result of use owing to can not carry out heating operation continuously; 2, owing to the frequent switch of several big main electrical parts, this will have a strong impact on the service life of electrical part and increase fault rate; 3, because compressor horsepower is bigger, and the instantaneous starting electric current is bigger,, be unfavorable for energy-conservation electricity consumption if frequent starting also will increase waste of electric quantity.4, realize that this will cause serious energy dissipation because the defrost of this kind mode is the flow direction of the high temperature and high pressure gas by changing system, be unfavorable for saving energy and reduce the cost.5, defrost DeGrain, because under the state of heating, the process that cold-producing medium flows into the outside is from the bottom to top, will cause following frosting or icing situation more serious, and the inflow of cold-producing medium is from top to bottom during defrost, will cause not serious top effective of frosting like this, the bad phenomenon of following effect that frosting is serious.Simultaneously,, when having frost when will cause outdoor temperature high relatively, this is not defrosting aliquant on the contrary problem when outdoor temperature will defrost when low especially more because this kind defrost periods and time all are the programs that designs yet.So most of air-conditioner manufacturer has stipulated clearly all in the operation instruction of air-conditioner that the use minimum temperature of air-conditioner must not limit and has been lower than subzero 7 degree.
The utility model content
The purpose of this utility model is for providing a kind of air-conditioner that addresses the above problem with not shutting down defrosting device.
The technical scheme that realizes the foregoing invention purpose is as follows:
A kind of air-conditioner is with shutting down defrosting device, draws the shunting circuit of an independent control between the cross valve of air-conditioner hose and low pressure valve, and the other end of described shunting circuit is to the outdoor heat exchanger porch, and shunting circuit is provided with an electromagnetism flow divider.
Described outdoor heat exchanger place is provided with a temperature heat detector.
The utility model is realized the defrost function voluntarily by increasing the relatively independent part flow arrangement of a cover.The effect of this cover part flow arrangement is exactly under the state of heating, and the gas of the HTHP of a part is introduced in the outdoor heat exchanger by this device, and increase from the bottom to top enters the refrigerant temperature of outdoor heat exchanger.The operation of air-conditioner complete machine is not affected, just from the system of the HTHP of complete machine, distributing a part of gas comes defrost to use, so just help to solve the many unreasonable place in the original defrost scheme, reach effect energy-conservation, consumption reduction, also avoided the excessive loss of electrical equipment original paper.
Description of drawings
Fig. 1 is the utility model structure key diagram
Among the figure → the mobile direction of refrigerant when representing heating operation
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1; a kind of air-conditioner is with not shutting down defrosting device; between the cross valve 1 of air-conditioner hose and low pressure valve 2 loops, increase a three-way pipe; cross valve connects three-way pipe and locates flatly; low pressure valve connects wherein a bite of two mouthfuls of three-way pipes; wherein another mouthful that three-way pipe is two mouthfuls connects an independent shunting circuit 3, and this is the inlet of independent shunting circuit.Independent shunting circuit outlet connects distributor 5 porch of outdoor heat exchanger 4, help like this in the gas inlet chamber external heat exchanger of uniform distribution HTHP, help comprehensive defrost, in the middle of shunting circuit, increase an electromagnetism flow divider 6, control opening and closing of this shunting circuit, to guarantee orderly comprehensive defrost work of carrying out.In addition, on outdoor heat exchanger, increase an outdoor temperature sensor 7, survey outdoor temperature, carry out different defrost operational modes and different time cycles according to different outdoor temperatures to help independent defrost loop.
To the course of work of the present utility model, i.e. the switching of electromagnetism flow divider describes below, and to help to understanding of the present utility model, the electromagnetism flow divider is in normally off under the normal condition.
A. whether be the heating operation state or be not the cross valve opening;
B. outdoor temperature is greater than zero degree;
C. outdoor temperature is less than zero degree;
When satisfying A and B condition, system will carry out by first sets of plan the unlatching situation of electromagnetism flow divider, it is as follows: after the compressor connection operation of start back reaches 30 minutes, the electromagnetism flow divider is opened, the shunting circuit conducting, defrost work begins, and continues after 1 minute, the electromagnetism flow divider cuts out, the end-of-job of defrost for the first time.After this, compressor is every, and operation is after 20 minutes continuously, and the electromagnetism flow divider is opened once, carries out defrost work, and the opening time is continuously 40 seconds.Compressor shutdown or complete machine outage, control system does not add up, and the program scheme starts anew to carry out.
When satisfying A and C condition, system will carry out by second sets of plan the unlatching situation of electromagnetism flow divider, and will be as follows: after the start, and the moving row of compressor start 1 minute, the electromagnetism flow divider is opened, and carries out pre-defrost work, and opening the duration is to close after 30 seconds.After compressor connection operation reached 20 minutes, the electromagnetism flow divider was opened, the shunting circuit conducting, and defrost work begins, and continues after 50 seconds, and the electromagnetism flow divider cuts out, the end-of-job of defrost for the first time.After this, compressor is every, and operation is after 15 minutes continuously, and the electromagnetism flow divider is opened once, carries out defrost work, and the opening time is continuously 30 seconds.Compressor shutdown or complete machine outage, control system does not add up, and the program scheme starts anew to carry out.
Claims (2)
1. an air-conditioner is with not shutting down defrosting device; it is characterized by: the shunting circuit of between the cross valve of air-conditioner hose and low pressure valve, drawing an independent control; the other end of described shunting circuit is to the outdoor heat exchanger porch, and shunting circuit is provided with an electromagnetism flow divider.
2. air-conditioner according to claim 1 is characterized by with not shutting down defrosting device: described outdoor heat exchanger place is provided with a temperature heat detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200055786U CN201177422Y (en) | 2008-03-06 | 2008-03-06 | Non-stop defrosting device for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200055786U CN201177422Y (en) | 2008-03-06 | 2008-03-06 | Non-stop defrosting device for air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201177422Y true CN201177422Y (en) | 2009-01-07 |
Family
ID=40217440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200055786U Expired - Fee Related CN201177422Y (en) | 2008-03-06 | 2008-03-06 | Non-stop defrosting device for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201177422Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982976A (en) * | 2014-04-22 | 2014-08-13 | 广东美的制冷设备有限公司 | Air conditioner defrosting control method and air conditioner |
| CN115307348A (en) * | 2022-08-04 | 2022-11-08 | 国网陕西省电力有限公司电力科学研究院 | Reverse-cycle defrosting air source heat pump system and control method thereof |
-
2008
- 2008-03-06 CN CNU2008200055786U patent/CN201177422Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982976A (en) * | 2014-04-22 | 2014-08-13 | 广东美的制冷设备有限公司 | Air conditioner defrosting control method and air conditioner |
| CN103982976B (en) * | 2014-04-22 | 2016-06-15 | 广东美的制冷设备有限公司 | Conditioner defrosting control method and conditioner |
| CN115307348A (en) * | 2022-08-04 | 2022-11-08 | 国网陕西省电力有限公司电力科学研究院 | Reverse-cycle defrosting air source heat pump system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090107 |