CN202532794U - Front internal auxiliary heating defrosting device - Google Patents
Front internal auxiliary heating defrosting device Download PDFInfo
- Publication number
- CN202532794U CN202532794U CN2012200607167U CN201220060716U CN202532794U CN 202532794 U CN202532794 U CN 202532794U CN 2012200607167 U CN2012200607167 U CN 2012200607167U CN 201220060716 U CN201220060716 U CN 201220060716U CN 202532794 U CN202532794 U CN 202532794U
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- refrigerant pipe
- defrosting
- heating
- heat exchange
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Abstract
The utility model discloses a front internal auxiliary heating defrosting device, which comprises a refrigerant pipe (9) connected between a throttling valve or capillary tube (11) and a low-temperature heat exchange side (3). The refrigerant pipe (9) is connected in series with a reducing refrigerant pipe (8) in which an electric heating device (7) is arranged. The front internal auxiliary heating defrosting device can be used for realizing system defrosting without stop, is easy to operate, short in defrosting time, high in efficiency and low in energy consumption, and can be applied to systems such as an air conditioner and a heat pump.
Description
Technical field
The utility model relates to a kind of anti-defrosting device, particularly relates to a kind ofly preventing the device of defrosting through being prepended to interior auxilliary thermal technology before the evaporimeter.
Background technology
Area, the middle and lower reach of Yangtze River belongs to the Xia Redong cryogenic region in thermal technology's weather subregion, and mean winter temperature is low, and relative humidity is big.And winter under the influence that receives northern strong cold air, the frost or the freezing weather of certain hour can appear.The environmental condition of high humility is these regional characteristics, also is the main cause that causes the serious and service behaviour difference of heat pump frosting.Very easily frosting of evaporimeter when heat pump is worked under this environment, the system works performance degradation is serious, passes in time, and the frost layer that grows into causes heat transfer process to worsen, and makes the evaporating temperature of unit reduce.At this moment, because the possibility that liquid has too much increased the compressor liquid hammer is returned in the not evaporation in time of a large amount of liquid refrigerant.And because frequent traditional Defrost mode makes unit be in unsettled duty, heating effect and heating time all can not guarantee.
Traditional Defrost method is that the blower fan of indoor set is shut down, and four-way change-over valve is switched, and air-conditioning system is moved according to refrigeration modes.At this moment the condenser that converts under the cooling condition of outdoor heat exchanger is used.There is following shortcoming in this Defrost mode: because the blower fan of indoor set is shut down, indoor heat exchanger recepts the caloric seldom from indoor environment, and the defrosting relative deficiency makes defrosting time long; Because indoor fan stall, indoor set indoor heat exchanger when defrosting needs draw heat from indoor environment, makes room temperature to descend, and makes indoor environment more abominable.Because defrosting time is long, the defrosting meeting on outdoor heat exchanger top drops on the lower fins, and following face cream lamination is tired a lot, is difficult to remove, and causes ice sheet to pile up, and influences heat exchanger efficiency.A kind of in addition hot gas bypass valve defrosting is to guide the HTHP exhaust into evaporimeter by exhaust outlet of compressor by hot gas bypass valve, defrosts through the heat release of HTHP cooling medium liquefaction.Because the heat of on high-tension side refrigerant still comes from the heat that evaporimeter absorbs, when temperature is lower, the defrosting longer duration will not have enough heat absorption, make main frame get into the protectiveness stopped status.Common electric heater defrosting device is to use heating wire to make the defrosting thermal source, usually, arranges that according to heating the position is different, and can be further divided into three types: (1) directly is placed on electric heater the surperficial end of heat exchanger; (2) be made of one electric heater and heat exchanger; (3) be placed on electrothermal tube in the refrigerant pipe in the evaporimeter.For preceding two kinds,, be the not breakdown phenomenon that causes the unit electric leakage of ice sheet in order to guarantee humid air because heating is exposed in the humid air.Usually the electric current that flows through heating is also little.When one timing of defrost energy needed, electric current is more little, and for the electric heater defrosting device of having given, its needed defrost time is long more.The third is built in heating in the refrigerant pipe in the evaporimeter, owing to no longer be limited by safe current, defrosting speed gets a promotion.But, to compare with preceding two kinds of electric defrosting modes, electrothermal tube is enclosed within the heat exchange gilled tube, not only requires electrothermal tube to have better stability, has also increased the difficulty of device fabrication cost and manufacturing and maintenance simultaneously.In addition, the simple defrosting controller that the unit interval relay of domestic air-conditioning equipment manufacturer use at present constitutes, its defrosting time is setting value; Can not how much regulating according to frosting degree; If the time relay breaks down, electrothermal tube works long hours, and can burn out air-conditioning equipment.
The utility model content
The utility model technical problem to be solved provides the anti-defrosting device of the auxilliary heat of forward type that the defrosting of a kind of system need not to shut down outward.
In order to solve the problems of the technologies described above; The anti-defrosting device of auxilliary heat in the forward type that the utility model provides; Comprise the refrigerant pipe that is connected between choke valve or capillary and the low-temperature heat exchange side; Described refrigerant pipe is in series with and becomes the caliber refrigerant pipe, in described change caliber refrigerant pipe, is provided with heating.
Heating can be various heater elements, and shape also can be arbitrarily.
Described change caliber refrigerant pipe is in series with first magnetic valve, and described change caliber refrigerant pipe and described first magnetic valve are parallel with the bypass magnetic valve.
Adopt the anti-defrosting device of the auxilliary heat of forward type of technique scheme outward; Utilize electricity-Re transfer principle; The heating of certain voltage, certain electric current is inserted in refrigerant pipe the inside between capillary and the evaporimeter, and fixing through welding between electrothermal tube and the refrigerant pipe, tube shape can be circle or ellipse etc.; And keep the flow unchanged of cold-producing medium; Consider the insertion of heating, when the feature dimension of design evaporimeter, should follow that refrigerant flow rate (basically) remains unchanged and working medium flow (basically) remains unchanged, thereby the size of corresponding increase refrigerant pipe.System's defrosting need not to shut down, and the auxilliary form of the electricity that is utilized can be alternating current, direct current, sun generating and thermoelectric.Be not only applicable to all air source heat pumps, comprise that also all have the heat pump air conditioner of auxilliary hot heating working medium characteristics.
The utility model is providing auxilliary hot frost prevention technology in a kind of forward type to air source heat pump; This technology can not influence under the function that the conventional air-conditioning system freezes summer, heat winter; Can also under the prerequisite of winter heating operation operating mode, uninterrupted indoor heating, before getting into evaporimeter, improve the energy of working medium apace, working medium had under the higher energy situation get into evaporimeter; Prevent the generation of frosting degree, and the structure of the preposition interior auxilliary heat of evaporimeter and the coupling of whole system are designed.
In sum, the utility model is that the defrosting of a kind of system need not to shut down and the anti-defrosting device of the auxilliary outward heat of forward type simple to operate, that the defrosting time is short, efficient is high, power consumption is few.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the improvement structural representation of the utility model.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described further.
The utility model can be accomplished according to Fig. 1 at the scene, and compressor 1 outlet one end links to each other with high temperature heat exchange side 13 with silencer 15 through cross valve 2, through cross valve 2, gets back to the inlet of compressor again through reservoir 16 after an end comes out from compressor 1; High temperature heat exchange side 13 1 ends are communicated with through 15 outlets of control magnetic valve 14 and silencer, the other end and device for drying and filtering 12, and pass through check-valves 10 connection of connecting with choke valve or capillary 11; Low-temperature heat exchange side 3 is connected with choke valve or capillary 11 through change caliber refrigerant pipe 8, refrigerant pipe 9, and the other end is connected with cross valve 2 inlets, in becoming caliber refrigerant pipe 8, is provided with heating 7, is connected with power supply 5 at heating 7; High temperature heat exchange side 13 can be that water-cooled also can be air-cooled.
Referring to Fig. 1, in becoming caliber refrigerant pipe 8, insert heating 7, and welding is fixing, can be issued to maximum using heat energy in the situation of the performances such as flow resistance that do not influence evaporimeter and improve the purpose that the working medium energy reaches frost prevention.
Referring to Fig. 1, when carrying out the operation of normal heating condition, heating 7 no power work.When needs defrost; After heating 7 energising work, condensate liquid process choke valve or capillary 11 get into change caliber refrigerant pipes 8 with refrigerant pipe 9 backs, the refrigerant temperature raising; Can guarantee that like this indoor set is in the heating operation operating mode always, can not have influence on indoor comfort level.
Referring to Fig. 1, heating 7 length L ', become caliber refrigerant pipe 8 length L " confirm its length according to defrosting concurrent heating amount.It is constant that the caliber D of the caliber φ of electrothermal device 7 and the caliber d of refrigerant pipe 9 and change caliber refrigerant pipe 8 follows refrigerant flow rate (basically), and the constant principle of working medium flow (basically) designs its size.
Referring to Fig. 2, the utility model improves on the basis of Fig. 1, becomes caliber refrigerant pipe 8 and is in series with first magnetic valve 4, and the change caliber refrigerant pipe 8 and first magnetic valve 4 are parallel with bypass magnetic valve 6.
Referring to Fig. 2, when carrying out the operation of normal heating condition, control bypass magnetic valve 6 is communicated with choke valves or capillary 11 breaks off choke valves or capillary 9 and low-temperature heat exchange side 3, heating 7 no power work with low-temperature heat exchange side 3, the first magnetic valves 4.When needs defrost; Control bypass magnetic valve 6 breaks off choke valve or capillary 11 is communicated with choke valve or capillary 11 and low-temperature heat exchange side 3, heating 7 energising work with low-temperature heat exchange side 3, the first magnetic valves 4; After condensate liquid process choke valve or capillary 11 get into change caliber refrigerant pipes 8 with refrigerant pipe 9 backs; Refrigerant temperature improves, and can guarantee that like this indoor set is in the heating operation operating mode always, can not have influence on indoor comfort level.High temperature heat exchange side 13 can adopt air-cooled or water-cooled or air-cooled+water-cooled United Technologies or carry out heat reclamation device as required.
The utility model is simple in structure, has kept the function of original valve member, can improve the reliability of auxilliary hot defrosting to greatest extent.The low-temperature heat exchange side 3 of evaporation ends adopts air-cooled evaporator.Obtaining electricity from the external world by heating 7 energisings and assist 5, can be alternating current, direct current, sun generating and thermoelectric.Except that becoming caliber refrigerant pipe 8, heating 7, other equipment use by the original production coordinative composition of equipments.
Under cooling condition; Change the cross valve direction, it is reverse then to illustrate the direction of arrow, and control bypass magnetic valve 6 is communicated with choke valve or capillary 11 and high temperature heat exchange side 3; First magnetic valve 4 breaks off choke valve or capillary 9 and high temperature heat exchange side 3; By former cooling condition operation, heating 7 no power work, i.e. frost prevention does not start.High steam by compressor 1 is discharged gets into high temperature heat exchange side 3 through cross valve 2, and refrigerant vapour is condensed into liquid; Through high temperature heat exchange side 3, be communicated with choke valve or capillary 11 entering low-temperature heat exchange sides 13 through bypass magnetic valve 6, and heat absorption in low-temperature heat exchange side 13; With the room air cooling, the refrigerant vapour after the evaporation is compressed machine 1 and sucks behind cross valve 2; Go round and begin again like this, realize kind of refrigeration cycle.
The anti-defrosting of forward type is for evaporimeter, and this utility model has successfully overcome the existing workflow reengineering complicacy that heats of similar products at home and abroad, and components and parts are changed frequent, are unfavorable for shortcomings such as production and processing.The related defrosting device of the utility model does not have commercial production at present, and the auxilliary device of existing electricity adopts heating needed air of user side or water, but not heating and cooling working medium, thereby efficient is low; Adopt the auxilliary technological installation process of electricity complicated in the evaporimeter, reliably reach the non-constant of security, can't in industrial process, adopt.Though and hot gas bypass defrosting adopts the heating and cooling agent, has influenced the output of heat in winter, and effect is unstable, and user's comfortableness is poor.The utility model patent adopts the advanced easy flow process that heats, and components and parts are changed less, are easy to the production and the processing of product, and the control reliability is higher; Compare with the anti-defrosting of the auxilliary outward heat of forward type, the interior auxilliary thermal efficiency is higher, and heat loss is littler, and user's comfortableness or output heat can be higher.Can successfully prevent the situation of outdoor evaporation side frosting.The utility model has realized that air-conditioning, heat pump refrigerating heating are respond well, and guarantees air-conditioning, each components and parts stable operation of heat pump.
The utility model is not limited to above-mentioned preferred forms according to white growth rhythm, and the patent protection section arrives between the low-temperature heat exchange side after choke valve or capillary, and comprises capillary (choke valve) or its part.If cold-producing medium is not a freon, be Ammonia, then before low-temperature heat exchange side 3, have low-pressure oil storage, then patent protection section between the low-temperature heat exchange side, comprises low-pressure oil storage, because this frost prevention section can be arranged on the low-pressure oil storage at choke valve or capillary.Anyone can draw other various forms of products in this section under the enlightenment of the utility model, no matter but on its shape or structure, do any variation, every identical with the utility model or akin technical scheme is all within its protection domain.
Claims (2)
1. assist the anti-defrosting device of heat in a forward type; Comprise the refrigerant pipe (9) that is connected between choke valve or capillary (12) and the low-temperature heat exchange side (3); It is characterized in that: described refrigerant pipe (9) is in series with and becomes caliber refrigerant pipe (8), in described change caliber refrigerant pipe (8), is provided with heating (7).
2. the anti-defrosting device of auxilliary heat in the forward type according to claim 1; It is characterized in that: described change caliber refrigerant pipe (8) is in series with first magnetic valve (4), and described change caliber refrigerant pipe (8) and described first magnetic valve (4) are parallel with bypass magnetic valve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200607167U CN202532794U (en) | 2012-02-23 | 2012-02-23 | Front internal auxiliary heating defrosting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200607167U CN202532794U (en) | 2012-02-23 | 2012-02-23 | Front internal auxiliary heating defrosting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202532794U true CN202532794U (en) | 2012-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200607167U Expired - Fee Related CN202532794U (en) | 2012-02-23 | 2012-02-23 | Front internal auxiliary heating defrosting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202532794U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123192A (en) * | 2013-03-20 | 2013-05-29 | 龚光彩 | External auxiliary heating frosting-proof capillary throttling integrated device |
| CN106322663A (en) * | 2016-08-24 | 2017-01-11 | 青岛海尔空调器有限总公司 | Self-cleaning control method for air conditioner |
-
2012
- 2012-02-23 CN CN2012200607167U patent/CN202532794U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123192A (en) * | 2013-03-20 | 2013-05-29 | 龚光彩 | External auxiliary heating frosting-proof capillary throttling integrated device |
| CN106322663A (en) * | 2016-08-24 | 2017-01-11 | 青岛海尔空调器有限总公司 | Self-cleaning control method for air conditioner |
| CN106322663B (en) * | 2016-08-24 | 2019-02-05 | 青岛海尔空调器有限总公司 | A kind of air-conditioning automatically cleaning control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUNAN ZHONGFU AIR CONDITIONER PURIFY EQUIPMENT CO. Free format text: FORMER OWNER: HUNAN UNIVERSITY Effective date: 20150104 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 410082 CHANGSHA, HUNAN PROVINCE TO: 410200 CHANGSHA, HUNAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150104 Address after: 410200, No. 16, No. 114, high star (steel) logistics park, Wangcheng District, Hunan, Changsha Patentee after: Hunan Zhongfu Air Conditioner Purify Equipment Co.,Ltd. Address before: Yuelu District City, Hunan province 410082 Changsha Lushan Road No. 2 Patentee before: Hunan University |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20190223 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |