CN201311141Y - Air conditioner for heat pump defrosting - Google Patents
Air conditioner for heat pump defrosting Download PDFInfo
- Publication number
- CN201311141Y CN201311141Y CNU2008201833991U CN200820183399U CN201311141Y CN 201311141 Y CN201311141 Y CN 201311141Y CN U2008201833991 U CNU2008201833991 U CN U2008201833991U CN 200820183399 U CN200820183399 U CN 200820183399U CN 201311141 Y CN201311141 Y CN 201311141Y
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- heat exchanger
- outdoor heat
- tube
- valve
- compressor
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Abstract
The utility model discloses an air conditioner for heat pump defrosting. The air conditioner comprises a compressor, a four-way reversing valve, an indoor heat exchanger and a main capillary tube, wherein one path of the four-way reversing valve is connected with the indoor heat exchanger, the other path thereof is connected with a back calandria tube and a front calandria tube of an outdoor heat exchanger, and the main capillary tube is connected between the front calandria tube of the outdoor heat exchanger and the indoor heat exchanger. The utility model is characterized in that a bypass pipe with a bypass solenoid valve is adopted to bypass the compressor and the front calandria tube of the outdoor heat exchanger; a solenoid valve and the capillary tube are connected in parallel between the front calandria tube of the outdoor heat exchanger and the back calandria tube of the outdoor heat exchanger; and when the solenoid valve is closed, and the by-pass solenoid valve is opened, the four-way reversing valve reverses the direction, so that connection pipelines among the compressor, the four-way reversing valve, the bypass electromagnetic valve, the front calandria tube of the outdoor heat exchanger, the capillary tube and the back calandria tube of the outdoor heat exchanger are communicated. The air conditioner provided by the utility model can effectively, rapidly and safely removes a frost layer formed on the surface of the outdoor heat exchanger, and ensures the smoothness of an air passage between finned tubes of the heat exchanger, thereby improving the heat-transfer efficiency.
Description
Technical field
The utility model relates to the defrosting of air-conditioner, is meant a kind of Defrost air-conditioner especially.
Background technology
At present, reverse cycle defrosting and hot-gas bypass defrosting are mainly adopted in the defrosting of air-conditioner.Reverse cycle defrosting is that system is converted to refrigerating state, outdoor heat exchanger is as condenser, the condensation heat release therein of the cold-producing medium of HTHP makes white melting layer, but indoor heat exchanger is as evaporimeter in this process, can be from indoor heat absorption, influence comfortableness, have the defrost scarce capacity simultaneously, slow problem.
The hot-gas bypass Defrost method adopts the evaporimeter short circuit, and the direct inlet chamber external heat exchanger of gaseous refrigerant of the HTHP that compressor is discharged defrosts, and in this defrost process, the energy of defrosting all comes from compressor, and is consuming time longer.In addition, two combs before and after the outdoor heat exchanger of air-conditioner mostly is, the pipeline trend designs according to cooling condition, its design feature and air intake direction have determined that the frosting of front-seat windward side is serious, row is faint relatively in the back, existing hot gas defrost method all is that heat exchanging device front and rear row is unified defrosting, the inhomogeneous waste that will certainly cause energy of frost layer.
The utility model content
In view of this, the utility model is to provide a kind of Defrost air-conditioner, and above-mentioned air-conditioner defrosting speed is slow to solve, the energy dissipation problem of higher.
For addressing the above problem, the utility model provides a kind of Defrost air-conditioner, comprise: compressor connects four-way change-over valve, four-way change-over valve one tunnel connects indoor heat exchanger, comb before another road junction chamber external heat exchanger rear of tube, the outdoor heat exchanger, connect main capillary before the outdoor heat exchanger between comb and the indoor heat exchanger, employing contains the bypass pipe bypass compressor and the preceding comb of outdoor heat exchanger of bypass solenoid valve, with magnetic valve in parallel and capillary between comb before the outdoor heat exchanger and the outdoor heat exchanger rear of tube.
In addition, close magnetic valve, open bypass solenoid valve, four-way change-over valve is changed direction, with pipeline connection between comb, capillary and the outdoor heat exchanger rear of tube before the compressor that connects, four-way change-over valve, bypass solenoid valve, the outdoor heat exchanger.
The air-conditioner that the utility model proposes can efficient, rapid, safe removal be formed at the frost layer on outdoor heat exchanger surface, can guarantee that the air duct between the finned tube is unimpeded, thereby can improve heat transfer efficiency.
In the defrost process, flow of refrigerant can not influence indoor temperature without indoor heat exchanger, and comfortableness is good;
Because cold-producing medium only flows in off-premises station, without tube connector, flow process is short, and circulation rate is fast, and defrosting rapidly;
The outdoor heat exchanger front and rear row defrosts respectively, and can determine defrosting time at different frosting situations, and defrosting speed is wasted energy soon and not, can reach defrosting effect rapidly and thoroughly;
The defrosting starting stage does not have the conversion cross valve, and the system pressure fluctuation is little.
Description of drawings
Fig. 1 is the air conditioner structure figure among the embodiment.
The specific embodiment
For clearly demonstrating the scheme in the utility model, provide preferred embodiment below and be described with reference to the accompanying drawings.
Referring to Fig. 1, air-conditioner in the utility model, compressor 1 and outdoor heat exchanger are constituted a circulation, and without indoor heat exchanger 3, the short circulation rate of flow process is fast, comb 5, rear of tube 6 defrost respectively before the outdoor heat exchanger, determine defrosting time at different frosting situations, defrosting speed is fast and save the energy, and outdoor heat exchanger has half as evaporimeter during defrosting, continue the outer heat of absorption chamber, thereby reach the purpose that effectively defrosts fast.System comprises: indoor heat exchanger 3, main capillary 4, comb 5, rear of tube 6 before the compressor 1, outdoor heat exchanger, setting makes the bypass pipe of indoor heat exchanger 3 and main capillary 4 bypass, is connecting magnetic valve 7 and capillary 8 in parallel between the comb of the front and back of outdoor heat exchanger.Bypass solenoid valve 9 when normal refrigeration or heating operation on the bypass pipe is closed, and the magnetic valve 7 before and after the outdoor heat exchanger between the comb is opened.
Open the bypass solenoid valve 9 on the bypass pipe during defrosting, because the effect of resistance, most of cold-producing mediums will flow to the preceding comb 5 and the rear of tube 6 of outdoor heat exchanger by bypass pipe, and without indoor heat exchanger 3 and main capillary 4, magnetic valve 7 before and after while close chamber's external heat exchanger between the comb, cold-producing medium flow through comb 5 before the compressor 1, bypass pipe, outdoor heat exchanger, capillary 8, outdoor heat exchanger rear of tube 6, get back to compressor 1 at last, outdoor heat exchanger formation one has the holonomic system of condenser, evaporimeter and throttle mechanism.
Describe the defrost process of air-conditioner below in detail, comprising: before the outdoor heat exchanger of air-conditioning between comb 6, the outdoor heat exchanger rear of tube 5, magnetic valve 7 in parallel and capillary 8.The process of defrosting comprises the steps:
1, closes outdoor fan 10, magnetic valve 7, open bypass solenoid valve 9, cold-producing medium flow through comb 5, capillary 8, outdoor heat exchanger rear of tube 6, four-way change-over valve 2 before the compressor 1, four-way change-over valve 2, bypass solenoid valve 9, outdoor heat exchanger, get back to compressor 1, as evaporimeter, comb 5 surface frost layers are at first melted comb 5 before the outdoor heat exchanger as condenser, outdoor heat exchanger rear of tube 6 before the outdoor heat exchanger;
2, after comb 5 defrostings finish before the outdoor heat exchanger, conversion four-way change-over valve 2 conducting directions, cold-producing medium is sent from compressor 1, deliver to outdoor heat exchanger rear of tube 6, capillary 8, the preceding comb 5 of outdoor heat exchanger through four-way change-over valve 2, after four-way change-over valve 2 is got back to compressor 1, outdoor heat exchanger rear of tube 6 is as condenser, and comb 5 is as evaporimeter before the outdoor heat exchanger, and the frost layer on outdoor heat exchanger rear of tube 6 surfaces begins to melt.
3, after 6 defrostings of outdoor heat exchanger rear of tube are all over, open outdoor fan 10, open magnetic valve 7, close bypass solenoid valve 9, normal heating operation recovers in system.
The air-conditioner that the utility model proposes can efficient, rapid, safe removal be formed at the frost layer on outdoor heat exchanger surface, can guarantee that the air duct between the finned tube is unimpeded, thereby can improve heat transfer efficiency.
In the defrost process, flow of refrigerant can not influence indoor temperature without indoor heat exchanger, and comfortableness is good;
Because cold-producing medium only flows in off-premises station, without tube connector, flow process is short, and circulation rate is fast, and defrosting rapidly;
The outdoor heat exchanger front and rear row defrosts respectively, and can determine defrosting time at different frosting situations, and defrosting speed is wasted energy soon and not, can reach defrosting effect rapidly and thoroughly;
The defrosting starting stage does not have the conversion cross valve, and the system pressure fluctuation is little.
For the method for being set forth among each embodiment of the utility model, all within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (2)
1, a kind of Defrost air-conditioner, comprise: compressor (1) connects four-way change-over valve (2), four-way change-over valve (2) one tunnel connects indoor heat exchanger (3), another road junction chamber external heat exchanger rear of tube (6), comb (5) before the outdoor heat exchanger, connect main capillary (4) before the outdoor heat exchanger between comb (5) and the indoor heat exchanger (3), it is characterized in that, employing contains the bypass pipe bypass compressor (1) and the preceding comb (5) of outdoor heat exchanger of bypass solenoid valve (9), with magnetic valve in parallel (7) and capillary (8) between comb before the outdoor heat exchanger (5) and the outdoor heat exchanger rear of tube (6).
2, Defrost air-conditioner according to claim 1, it is characterized in that, close magnetic valve (7), open bypass solenoid valve (9), four-way change-over valve (2) is changed direction, with pipeline connection between the preceding comb (5) of compressor (1), four-way change-over valve (2), bypass solenoid valve (9), outdoor heat exchanger, capillary (8) and the outdoor heat exchanger rear of tube (6) that connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201833991U CN201311141Y (en) | 2008-12-12 | 2008-12-12 | Air conditioner for heat pump defrosting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201833991U CN201311141Y (en) | 2008-12-12 | 2008-12-12 | Air conditioner for heat pump defrosting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201311141Y true CN201311141Y (en) | 2009-09-16 |
Family
ID=41108396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201833991U Expired - Fee Related CN201311141Y (en) | 2008-12-12 | 2008-12-12 | Air conditioner for heat pump defrosting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201311141Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731352A (en) * | 2018-07-18 | 2018-11-02 | Tcl空调器(中山)有限公司 | A kind of air-conditioner defrosting structure and air-conditioning system |
-
2008
- 2008-12-12 CN CNU2008201833991U patent/CN201311141Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731352A (en) * | 2018-07-18 | 2018-11-02 | Tcl空调器(中山)有限公司 | A kind of air-conditioner defrosting structure and air-conditioning system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090916 Termination date: 20161212 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |