CN201314726Y - Parallel flow air conditioner - Google Patents
Parallel flow air conditioner Download PDFInfo
- Publication number
- CN201314726Y CN201314726Y CNU2008202000434U CN200820200043U CN201314726Y CN 201314726 Y CN201314726 Y CN 201314726Y CN U2008202000434 U CNU2008202000434 U CN U2008202000434U CN 200820200043 U CN200820200043 U CN 200820200043U CN 201314726 Y CN201314726 Y CN 201314726Y
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- parallel
- heat exchanger
- outdoor
- bypass circulation
- air conditioner
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Abstract
The utility model belongs to the technical field of refrigeration and in particular relates to a parallel flow air conditioner. The air conditioner comprises an indoor unit and an outdoor unit. The indoor unit comprises an indoor copper pipe finned heat exchanger; the outdoor unit comprises a compressor, a four-way valve, an outdoor parallel flow heat exchanger, a throttle capillary and a bypassing loop; the compressor, the four-way valve, the outdoor parallel flow heat exchanger and the throttle capillary are sequentially connected in the loop; the bypassing loop comprises a plurality of electromagnetic valves, and each electromagnetic valve is respectively connected with the throttle capillary in parallel. The parallel flow air conditioner has the main advantages that: 1. uninterrupted defrosting is realized, namely the defrosting does not need the conversion between refrigerating and heating, and the heating is not affected by interruption, so as to improve the heating comfort; 2. by utilizing the bypassing loop and an auxiliary bypassing loop in a combination manner, the defrosting effect is improved and the heating cannot be interrupted as well; 3. the controlling is simple and the technical effects are obvious.
Description
Technical field
The utility model belongs to refrigeration technology field, specifically a kind of parallel flow air conditioner.
Background technology
When air-conditioning during in heating operation and the condition in uniform temperature and humidity, outdoor evaporimeter is easy to frosting.Particularly when adopting concurrent flow as outdoor evaporimeter, easier frosting.In addition, when adopting concurrent flow as outdoor evaporimeter, the air-conditioning frosting cycle is short, and defrosting time is long and defrosting is unclean, thereby influences heating effect.The normal Defrost method that adopts of air-conditioning is the cross valve commutation at present, promptly on compressor and outdoor evaporimeter and indoor evaporator connecting pipe, a cross valve is set, when heating, condenser when outdoor evaporimeter converts refrigerating operaton to, this alternately change operation that heats, freezes, indoor meeting is blown a cold wind over, the effect of influence heating.When adopting concurrent flow as outdoor evaporation, this alternately change operation that heats, freezes is just more frequent, and the air-conditioning heating effect is just poorer, and the comfortableness that heats is also just poorer.For improving the comfortableness that air-conditioning heats, be desirable to provide a kind of continual Defrost method.Be 03225652.3 as the patent No. and be called that " a kind of air-conditioner with auxiliary defroster " discloses the auxiliary defrosting of a kind of charged heating air-conditioner, be characterized in that electric heater unit along the heat exchanger tube layout that outdoor heat exchange length of tube direction reclines and arranges or be parallel to outdoor heat exchanger, defrosts by electrical heating; And for example the patent No. has proposed a kind of device that utilizes electrical heating and throttling arrangement bypass pipe in parallel to defrost for the 98243569.X name is called " utilizing the high-temperature high-pressure refrigerant defroster "; The patent No. is 200420103512.2 and is called that " air-conditioner of the auxiliary defroster of band " proposed a kind of solution relatively preferably for another example, and its main feature is that high-temperature exhaust air that compressor is produced is bypassed to outdoor heat exchanger after by cross valve and defrosts.Because concurrent flow frosting speed is fast, white bed thickness is used for the concurrent flow defrosting if use above technology, and then defrosting is unclean, and heating effect is poor, still difficult people's will to the greatest extent.
The utility model content
The technical problems to be solved in the utility model provides a kind of parallel flow air conditioner that can uninterruptedly defrost.
According to above-mentioned specification requirement, the utility model is realized by the following technical solutions:
A kind of parallel flow air conditioner, comprise by pipeline and be communicated with indoor unit and the outdoor unit that forms the loop, indoor unit comprises indoor copper tube and fin formula heat exchanger, outdoor unit comprise compressor, cross valve, the outdoor parallel-flow heat exchanger that is connected in successively in the loop and be connected in outdoor parallel-flow heat exchanger and indoor copper tube and fin formula heat exchanger between throttle capillary tube, between outdoor parallel-flow heat exchanger and indoor copper tube and fin formula heat exchanger, also be in series with bypass circulation, above-mentioned bypass circulation comprises a plurality of magnetic valves, and each magnetic valve is all in parallel with throttle capillary tube.
As improvement to such scheme, between compressor outlet and bypass circulation, also be connected an auxiliary bypass circulation, auxiliary bypass circulation is in parallel with outdoor parallel-flow heat exchanger.
Described auxiliary bypass circulation comprises a pilot solenoid valve, and pilot solenoid valve is by pipeline and outdoor parallel-flow heat exchanger, four-way valve connection in parallel.
Existing relatively air-conditioner the utlity model has following advantage:
1. realize uninterrupted defrosting, i.e. defrosting does not need the conversion of freezing, heating, and heats not to be subjected to the influence that is interrupted, thereby the comfortableness that heats is improved;
2. because throttle capillary tube and bypass circulation parallel connection according to the needs of defrosting, can be opened bypass circulation, realize being close to and defrosting, do not heat simultaneously and can be interrupted;
3. because the battery valve parallel connection of cross valve and auxiliary bypass circulation according to the needs of defrosting, can be opened auxiliary bypass circulation, realize bypass defrost, do not heat simultaneously and can be interrupted;
4. by being used in combination of bypass circulation and auxiliary bypass circulation, can improve defrosting effect, not heat simultaneously and can be interrupted;
5. control is simple, obvious technical effects.
Description of drawings
Accompanying drawing 1 is the utility model embodiment one structural representation; Accompanying drawing 2 is the utility model embodiment two structural representations.
The specific embodiment
For the ease of those skilled in the art's understanding, will tie specific embodiment and accompanying drawing below the utility model structural principle will be described in further detail:
Embodiment one: as shown in Figure 1, the parallel flow air conditioner that this programme disclosed comprises indoor unit and outdoor unit, indoor unit and outdoor unit are communicated with the formation loop by pipeline, cold-producing medium moves in the loop, realize indoor unit and outdoor unit heat exchange, thereby reach the refrigeration of air-conditioning, the purpose that heats.
Wherein, indoor unit comprises indoor copper tube and fin formula heat exchanger 6, and indoor copper tube and fin formula heat exchanger 6 input/output terminals all are connected with pipeline, and pipeline is communicated with outdoor unit.Outdoor unit comprises compressor 1, cross valve 2, outdoor parallel-flow heat exchanger 3 and the throttle capillary tube 5 that is communicated with by pipeline equally, throttle capillary tube 5 is connected in the pipeline of outdoor parallel-flow heat exchanger 3 and indoor copper tube and fin formula heat exchanger 6, and the input/output port of compressor 1, outdoor parallel-flow heat exchanger 3 and indoor copper tube and fin formula heat exchanger 6 are connected on 2 four interfaces of cross valve.The improvements of this programme maximum are used for tapped refrigerant for be provided with a bypass circulation between outdoor parallel-flow heat exchanger 3 and indoor copper tube and fin formula heat exchanger 6, and bypass circulation and throttle capillary tube 5 are parallel with one another.This bypass circulation mainly is made up of two magnetic valves 4, and two magnetic valves 4 are parallel with one another by pipeline, and promptly two magnetic valves 4 are parallel with one another with throttle capillary tube 5.When two magnetic valves 4 are opened, can pass through magnetic valve 4 by the splitter section cold-producing medium, play the effect of shunting, the conversion amount of heat when the minimizing cold-producing medium circulates between outdoor parallel-flow heat exchanger 3 and indoor copper tube and fin formula heat exchanger 6.Certainly, in order more accurately to control the shunting of cold-producing medium, the magnetic valve in parallel with throttle capillary tube 5 can be more, as 3,4 even more a plurality of, do not exemplifying one by one at this.
When air-conditioning during at heating operation, compressor 1 is discharged the vaporized refrigerant of 70 degrees centigrade of left and right sides high temperature, cold-producing medium enters cross valve 2 through pipeline, copper tube and fin formula heat exchanger 6 is condensed into 50 celsius temperature liquid refrigerants in the inlet chamber again, liquid refrigerant flows out from indoor copper tube and fin formula heat exchanger 6 and enters throttle capillary tube 5 throttlings formation low temperature liquid cold-producing medium then, the low temperature liquid cold-producing medium again outside the piping inlet chamber parallel-flow heat exchanger 3 flash to the low temperature vaporized refrigerant, the low temperature vaporized refrigerant enters cross valve 2 by pipeline again, enters at last in the compressor 1 to form one and heat circulation.
After heating circular flow a period of time, outdoor parallel-flow heat exchanger 3 surfaces will frosting, at this moment just need carry out Defrost operation, and Defrost operation can have following dual mode in this programme:
A. after opening one of them battery valve in the bypass circulation separately, in the outer parallel-flow heat exchanger 3 of the direct inlet chamber of liquid refrigerant of part high temperature, the liquid refrigerant of high temperature improves parallel-flow heat exchanger 3 surface temperatures, make the white melting layer on parallel-flow heat exchanger 3 surfaces, thereby reach the effect of defrosting.In this defrost process, owing to have only the liquid refrigerant of part high temperature to pass through bypass circulation, the liquid refrigerant of a part of high temperature then carries out throttling by throttle capillary tube 5 and becomes the low temperature liquid cold-producing medium in addition, and the parallel-flow heat exchanger steaming 3 outside the piping inlet chamber of low temperature liquid cold-producing medium flashes to the low temperature vaporized refrigerant, the low temperature vaporized refrigerant enters cross valve 2 through piping and enters compressor 1 again, the whole ring that heats follows also and can keep, and does not also promptly heat and can interrupt because of defrosting.
If b. the speed in order to accelerate to defrost can be opened two magnetic valves simultaneously, the cold-producing medium of process throttle capillary tube 5 will reduce, and will increase through the cold-producing medium of bypass circulation, can further accelerate defrosting speed like this.
Embodiment two: as shown in Figure 2, scheme among the relative embodiment one of this programme, difference be for having increased an auxiliary bypass circulation, and only be provided with a magnetic valve 4 in the bypass circulation.
Should be connected between compressor 1 gas outlet and the bypass circulation by auxiliary bypass circulation, in parallel with outdoor parallel-flow heat exchanger 3.Should comprise a pilot solenoid valve 7 by auxiliary bypass circulation, pilot solenoid valve 7 is in parallel by pipeline and outdoor parallel-flow heat exchanger 3, cross valve 2.
The scheme Defrost operation of present embodiment can have following several mode:
A. open the magnetic valve 4 in the bypass circulation separately: after opening the battery valve 4 in the bypass circulation separately, in the outer parallel-flow heat exchanger 3 of the direct inlet chamber of liquid refrigerant of part high temperature, the liquid refrigerant of high temperature improves parallel-flow heat exchanger 3 surface temperatures, make the white melting layer on parallel-flow heat exchanger 3 surfaces, thereby reach the effect of defrosting.In this defrost process, owing to have only the liquid refrigerant of part high temperature to pass through bypass circulation, the liquid refrigerant of a part of high temperature then carries out throttling by throttle capillary tube 5 and becomes the low temperature liquid cold-producing medium in addition, and the parallel-flow heat exchanger steaming 3 outside the piping inlet chamber of low temperature liquid cold-producing medium flashes to the low temperature vaporized refrigerant, the low temperature vaporized refrigerant enters cross valve 2 through piping and enters compressor 1 again, the whole ring that heats follows also and can keep, and does not also promptly heat and can interrupt because of defrosting.
If b. the speed in order to accelerate to defrost is opened the boosting battery valve 7 in the auxiliary bypass circulation simultaneously again behind the battery valve 4 of opening the band bypass circulation.After opening the boosting battery valve 7 of auxiliary bypass circulation, vaporized refrigerant parallel-flow heat exchanger outside the pipeline inlet chamber that compressor 1 is discharged 70 degree left and right sides high temperature steams 3, because auxiliary bypass circulation has been shunted the vaporized refrigerant of part high temperature, further cause the flow by throttle capillary tube 5 to reduce, throttling becomes the liquid refrigerant of low temperature to reduce.Comparatively speaking, the high temperature vaporized refrigerant of the outer parallel-flow heat exchanger steaming 3 of inlet chamber and the liquid refrigerant of high temperature just increase, finally the mixing temperature in outdoor parallel-flow heat exchanger steaming 3 just improves, like this, the temperature difference between outdoor parallel-flow heat exchanger 3 inwalls and the frost layer just increases, thereby has accelerated the speed of defrost.
C. open the pilot solenoid valve 7 in the auxiliary bypass circulation separately: after opening the boosting battery valve 7 of the auxiliary bypass circulation of band separately, the outer parallel-flow heat exchanger 3 of the direct inlet chamber of vaporized refrigerant of part high temperature, the vaporized refrigerant of high temperature improves outdoor parallel-flow heat exchanger 3 surface temperatures, make the white melting layer on outdoor parallel-flow heat exchanger 3 surfaces, thereby reach the effect of defrosting.In this defrost process, because the vaporized refrigerant that has only part high temperature is by auxiliary bypass circulation, the liquid refrigerant of a part of high temperature then carries out throttling by throttle capillary tube 5 and becomes the low temperature liquid cold-producing medium in addition, and the outer parallel-flow heat exchanger steaming 3 of low temperature liquid cold-producing medium inlet chamber flashes to the low temperature vaporized refrigerant, the low temperature vaporized refrigerant enters cross valve 2 through piping and enters compressor 1 again, the whole ring that heats follows also and can keep, and does not also promptly heat and can interrupt because of defrosting.
D. the speed in order to accelerate to defrost is being opened the battery valve 4 that boosting battery valve 7 backs of assisting bypass circulation are opened bypass circulation simultaneously again.After opening battery valve 4, the outer parallel-flow heat exchanger 3 of the direct inlet chamber of the liquid refrigerant of part high temperature, add the vaporized refrigerant of having been shunted part high temperature by auxiliary bypass circulation, further cause the flow by throttle capillary tube 5 to reduce, throttling becomes the liquid refrigerant of low temperature to reduce.Comparatively speaking, the high temperature vaporized refrigerant of the outer parallel-flow heat exchanger 3 of inlet chamber and the liquid refrigerant of high temperature just increase, finally the mixing temperature at outdoor parallel-flow heat exchanger 3 just improves, like this, the temperature difference between outdoor parallel-flow heat exchanger 3 inwalls and the frost layer just increases, thereby has accelerated the speed of defrost.
More than be the preferable implementation of the utility model, need to prove that under the prerequisite that does not break away from the present utility model design, any conspicuous replacement is all within the utility model protection domain.
Claims (3)
1. parallel flow air conditioner, comprise by pipeline and be communicated with indoor unit and the outdoor unit that forms the loop, indoor unit comprises indoor copper tube and fin formula heat exchanger, outdoor unit comprises the compressor that is connected in successively in the loop, cross valve, outdoor parallel-flow heat exchanger and be connected in outdoor parallel-flow heat exchanger and indoor copper tube and fin formula heat exchanger between throttle capillary tube, between outdoor parallel-flow heat exchanger and indoor copper tube and fin formula heat exchanger, also be in series with bypass circulation, it is characterized in that: described bypass circulation comprises a plurality of magnetic valves, and each magnetic valve is all in parallel with throttle capillary tube.
2. parallel flow air conditioner according to claim 1 is characterized in that: also be connected an auxiliary bypass circulation between compressor outlet and bypass circulation, auxiliary bypass circulation is in parallel with outdoor parallel-flow heat exchanger.
3. parallel flow air conditioner according to claim 2 is characterized in that: described auxiliary bypass circulation comprises a pilot solenoid valve, and pilot solenoid valve is by pipeline and outdoor parallel-flow heat exchanger, four-way valve connection in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202000434U CN201314726Y (en) | 2008-09-02 | 2008-09-02 | Parallel flow air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202000434U CN201314726Y (en) | 2008-09-02 | 2008-09-02 | Parallel flow air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201314726Y true CN201314726Y (en) | 2009-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202000434U Expired - Lifetime CN201314726Y (en) | 2008-09-02 | 2008-09-02 | Parallel flow air conditioner |
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| CN (1) | CN201314726Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101387455B (en) * | 2008-09-02 | 2012-10-31 | Tcl集团股份有限公司 | Parallel flow air conditioner and defrosting control method thereof |
| CN105333638A (en) * | 2014-05-26 | 2016-02-17 | 大金工业株式会社 | Air conditioning device and control method thereof |
| CN108800440A (en) * | 2018-06-19 | 2018-11-13 | 广东美的制冷设备有限公司 | Air conditioner and its control method |
| CN114322351A (en) * | 2021-12-20 | 2022-04-12 | 珠海格力电器股份有限公司 | Double-bypass air conditioning system, defrosting control method and air conditioner |
-
2008
- 2008-09-02 CN CNU2008202000434U patent/CN201314726Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101387455B (en) * | 2008-09-02 | 2012-10-31 | Tcl集团股份有限公司 | Parallel flow air conditioner and defrosting control method thereof |
| CN105333638A (en) * | 2014-05-26 | 2016-02-17 | 大金工业株式会社 | Air conditioning device and control method thereof |
| CN105333638B (en) * | 2014-05-26 | 2018-09-21 | 大金工业株式会社 | Air-conditioning device and its control method |
| CN108800440A (en) * | 2018-06-19 | 2018-11-13 | 广东美的制冷设备有限公司 | Air conditioner and its control method |
| CN108800440B (en) * | 2018-06-19 | 2020-09-25 | 广东美的制冷设备有限公司 | Air conditioner and control method thereof |
| CN114322351A (en) * | 2021-12-20 | 2022-04-12 | 珠海格力电器股份有限公司 | Double-bypass air conditioning system, defrosting control method and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090923 |
|
| CX01 | Expiry of patent term |