CN103954087B - Defrosting device, heat pump device, and defrosting method for defrosting device - Google Patents
Defrosting device, heat pump device, and defrosting method for defrosting device Download PDFInfo
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- CN103954087B CN103954087B CN201410215945.5A CN201410215945A CN103954087B CN 103954087 B CN103954087 B CN 103954087B CN 201410215945 A CN201410215945 A CN 201410215945A CN 103954087 B CN103954087 B CN 103954087B
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000010257 thawing Methods 0.000 title claims abstract description 21
- 239000012530 fluid Substances 0.000 claims abstract description 81
- 230000005494 condensation Effects 0.000 claims abstract description 21
- 238000009833 condensation Methods 0.000 claims abstract description 21
- 238000001704 evaporation Methods 0.000 claims abstract description 20
- 230000008020 evaporation Effects 0.000 claims abstract description 17
- 239000003507 refrigerant Substances 0.000 claims description 13
- 230000008676 import Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 13
- 238000005057 refrigeration Methods 0.000 abstract description 9
- 238000004781 supercooling Methods 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 4
- 238000005562 fading Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009401 outcrossing Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Abstract
The invention discloses a defrosting device, a heat pump machine and a defrosting method of the defrosting device, and relates to the technical field of air conditioners. The problem of prior art can't make outdoor heat exchanger both satisfy when heating the operation improve the effect of defrosting, guarantee again that outdoor heat exchanger does not have any decay influence to the operation of refrigeration. The defrosting device comprises an indoor heat exchanger, an outdoor heat exchanger, a compressor and a control valve, wherein the outdoor heat exchanger comprises a first functional part and a second functional part, when the control valve is in a first state, the first functional part can perform sensible heat releasing operation on passing fluid, and the second functional part can perform supercooling heat releasing operation on the passing fluid. When the control valve is in the second state, the first function part can perform evaporation heat absorption operation on the passing fluid, and the second function part can perform condensation heat release operation on the passing fluid. The outdoor heat exchanger can not only meet the requirement of improving defrosting effect in heating operation, but also ensure no attenuation influence on refrigerating operation.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of defroster, arrange the Defrost method of the heat pump machine of this defroster and defroster.
Background technology
Frosting is the serious problems that heat pump machine faces, and not only affects the stable operation of heat pump machine, and has adverse influence to users'comfort.Improve heat pump machine frosting situation to be at low temperatures conducive to improving heating capacity, guarantee system stable operation.
At present, it is too small that heat pump machine is all condenser (being specially: indoor heat exchanger), after condensation, degree of supercooling is less, make overall efficiency low, and evaporimeter (being specially: outdoor heat exchanger) is relatively large, in the winter of severe cold, when outdoor temperature is low, evaporating temperature becomes lower and causes frosting on outdoor heat exchanger serious.For solving the serious defect of frosting, prior art provides a kind of hot-gas bypass and surface cooler supercooling defrosting device, and this device adds super cooled sect in the bottom of evaporimeter, to realize the object reducing frosting velocity.
The applicant finds, prior art at least exists following technical problem:
1, prior art is for heat supplying air conditioning uses, only be suitable for being applied to the situation that heat pump machine is in heating condition, owing to not considering super cooled sect that outdoor heat exchanger bottom the increases flow direction when refrigerating operaton, for the refrigeration air-conditioner that there is cooling condition, time under refrigeration air-conditioner is in cooling condition, the technical problem that outdoor heat exchanger degree of supercooling cannot meet cannot be overcome.
2, for realizing the super cooled sect of outer machine heat exchanger bottom as indoor heat exchanger (being called for short: interior machine) condensation, use magnetic valve and control coil to realize switching in prior art, cost increase is larger.
Summary of the invention
One of them object of the present invention is the Defrost method proposing a kind of defroster, heat pump machine and this defroster, solve the effect improving defrost when prior art cannot make outdoor heat exchanger both meet heating operation, ensure again to refrigerating operaton without any the technical problem of influence of fading.Many technique effects that optimal technical scheme of the present invention can produce refer to hereafter sets forth.
For achieving the above object, the invention provides following technical scheme:
The defroster that the embodiment of the present invention provides, comprises indoor heat exchanger, outdoor heat exchanger, compressor and control valve, and described outdoor heat exchanger comprises the first funtion part and the second funtion part, wherein:
Described control valve is arranged on the pipeline between the fluid issuing of described compressor, fluid inlet and described indoor heat exchanger, described first funtion part;
Described first funtion part and described second funtion part between the two and described second funtion part be connected by conduction pipe between the two with described indoor heat exchanger;
The duty of described control valve comprises the first state and the second state,
When described control valve is in the first state, the pipeline conducting between the fluid issuing of described compressor and described first funtion part, the pipeline conducting between the fluid inlet of described compressor and described indoor heat exchanger; Described first funtion part can carry out sensible heat heat release operation to the fluid of process, and described second funtion part can carry out cold heat release operation to the fluid of process;
When described control valve is in the second state, pipeline conducting between the fluid issuing of described compressor and described indoor heat exchanger, pipeline conducting between the fluid inlet of described compressor and described first funtion part, pipeline between the fluid issuing of described compressor and described first funtion part ends, and the pipeline between the fluid inlet of described compressor and described indoor heat exchanger ends; Described first funtion part can carry out evaporation endothermic operation to the fluid of process, and described second funtion part can carry out condensation heat release operation to the fluid of process.
In one preferably or alternatively embodiment, described conduction pipe is provided with restricting element, when described control valve is in the first state, the fluid (this fluid also can for the fluid via the direct described restricting element of input after described second funtion part) inputting described restricting element via described second funtion part and described conduction pipe successively inputs described indoor heat exchanger by described conduction pipe after described restricting element;
When described control valve is in the second state, the fluid (this fluid also can for the fluid via the direct described restricting element of input after described second funtion part) inputting described restricting element via described second funtion part and described conduction pipe successively inputs described first funtion part by described conduction pipe after described restricting element.
In one preferably or alternatively embodiment, described restricting element is electric expansion valve.
In one preferably or alternatively embodiment, described conduction pipe comprises the first check valve, the second check valve, the 3rd check valve and the 4th check valve, wherein:
The going out to flow of the influent stream end of described first check valve and described second check valve hold both in parallel and be all connected with one of them in two ports of described first funtion part, in two ports of described first funtion part wherein another is connected by pipeline with described control valve;
The influent stream end of described second check valve respectively with the going out to flow and to hold and the influent stream end of described 3rd check valve is connected of described restricting element;
Described first check valve go out stream end respectively with described 4th check valve go out to flow hold and described second funtion part two ports in one of them be connected, in two ports of described second funtion part wherein another is connected with the influent stream end of described restricting element;
Described 3rd check valve go out stream end be connected with one of them in the influent stream end of described 4th check valve and two ports of described indoor heat exchanger respectively, in two ports of described indoor heat exchanger wherein another is connected by pipeline with described control valve.
In one preferably or alternatively embodiment, described control valve is solenoid operated four-way valve.
In one preferably or alternatively embodiment, described first funtion part is abutted against with described second funtion part or is connected by Heat Conduction Material between the two.
In one preferably or alternatively embodiment, described first funtion part is arranged on the top of described second funtion part.
The heat pump machine that the embodiment of the present invention provides, comprises the defroster defroster that the arbitrary technical scheme of the invention described above provides.
The Defrost method of the defroster that the embodiment of the present invention provides, at least comprises the following steps:
The first funtion part refrigerant vapour being imported outdoor heat exchanger carries out sensible heat heat release operation;
The second funtion part that the fluid that described first funtion part exports imports described outdoor heat exchanger was carried out cold heat release operation;
The fluid that described second funtion part exports is imported indoor heat exchanger and carries out evaporation endothermic operation.
In one preferably or alternatively embodiment, the Defrost method of described defroster is further comprising the steps of:
Refrigerant vapour is imported described indoor heat exchanger and carry out condensation heat release operation;
The fluid exported by described indoor heat exchanger imports described second funtion part and carries out condensation heat release operation;
The fluid that described second funtion part exports is imported described first funtion part and carries out evaporation endothermic operation;
The heat utilizing described second funtion part to discharge carries out defrosting operation to described outdoor heat exchanger.
Based on technique scheme, the embodiment of the present invention at least can produce following technique effect:
In the defroster that the embodiment of the present invention provides, segment processing has been carried out to outdoor heat exchanger, outdoor heat exchanger is divided in order to the first funtion part and the second funtion part, first funtion part (being preferably top) of outdoor heat exchanger can carry out sensible heat heat release operation to the fluid of process, second funtion part (being preferably bottom) of outdoor heat exchanger can carry out cold heat release operation to the fluid of process (being preferably cold-producing medium), so when control valve is in the first state, start compressor, the refrigerant vapour of the fluid issuing output of compressor is successively through the first funtion part, meeting sensible heat heat release during the second funtion part, cross cold heat release thus heat radiation, distribute after the lower cold-producing medium of the temperature of heat enters indoor heat exchanger, the heat in indoor heat exchanger can be absorbed comparatively efficiently, thus good refrigeration can be reached in indoor, ensure that thus the outdoor heat exchanger after segmentation to refrigerating operaton without any influence of fading, simultaneously, when the present invention carries out heating operation, second funtion part can carry out condensation heat release operation, first funtion part can carry out evaporation endothermic operation, the heat of the second funtion part release can meet outdoor heat exchanger improves defrost effect when heating operation.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
The rough schematic view of annexation between the parts that Fig. 1 is cold-producing medium process when defroster that the preferred embodiment of the present invention provides is in cooling condition;
Fig. 2 is the schematic diagram of the flow direction of cold-producing medium when defroster that the preferred embodiment of the present invention provides is in cooling condition;
Fig. 3 is the schematic diagram of the flow direction of cold-producing medium when defroster that the preferred embodiment of the present invention provides is in heating condition;
The rough schematic view of annexation between the parts that Fig. 4 is cold-producing medium process when defroster that the preferred embodiment of the present invention provides is in heating condition;
Reference numeral: 1, compressor; 2, control valve (specifically can be cross valve); 3, restricting element; 41, indoor heat exchanger; 42, outdoor heat exchanger; 5, the first funtion part; 6, the second funtion part; 7, the first check valve; 8, the second check valve; 9, the 3rd check valve; 10, the 4th check valve.
Detailed description of the invention
Content of the present invention and the distinctive points between the present invention and prior art can be understood below with reference to accompanying drawing Fig. 1 ~ Fig. 4 and word content.Hereafter by accompanying drawing and the mode enumerating embodiment more of the present invention, technical scheme of the present invention (comprising optimal technical scheme) is described in further detail.It should be noted that: any technical characteristic in the present embodiment, any technical scheme is all one or more in the technical characteristic of plurality of optional or optional technical scheme, cannot exhaustive all alternative technical characteristics of the present invention and alternative technical scheme in order to describe succinct to need in presents, also the embodiment being not easy to each technical characteristic all emphasizes that it is one of optional numerous embodiments, so those skilled in the art should know: arbitrary technological means provided by the invention can be carried out replacing or two or more technological means or technical characteristic arbitrarily provided by the invention being carried out mutually combining and obtain new technical scheme.Any technical characteristic in the present embodiment and any technical scheme all do not limit the scope of the invention, protection scope of the present invention should comprise those skilled in the art do not pay creative work thinkable any alternate embodiments and those skilled in the art new technical scheme that two or more technological means or technical characteristic arbitrarily provided by the invention are carried out mutually combining and obtain.
Embodiments provide a kind of outdoor heat exchanger segment processing, improved the effect of defrost when both can meet heating operation, the outdoor heat exchanger after segmentation can being ensured again to refrigerating operaton without any influence of fading defroster, the heat pump machine of this defroster and the Defrost method of defroster are set.
Below in conjunction with the elaboration that Fig. 1 ~ Fig. 4 carries out specifically to technical scheme provided by the invention.In Fig. 1 ~ Fig. 4, the direction of arrow represents the flow direction of this defroster inner fluid (being preferably cold-producing medium).
The embodiment of refrigerating part:
As shown in Figure 1, the defroster that the embodiment of the present invention provides, comprise indoor heat exchanger (or claim: indoor set heat exchanger, indoor heat exchanging pipe) 41, outdoor heat exchanger (or claim: outdoor unit heat exchanger, outdoor heat exchange pipeline) 42, compressor 1 and control valve 2, control valve 2 can be hand-operated valve or solenoid operated four-way valve, outdoor heat exchanger 42 comprises the first funtion part (being preferably top) 5 and the second funtion part (being preferably bottom) 6, wherein:
Control valve 2 is arranged on the fluid issuing of compressor 1, pipeline between fluid inlet and indoor heat exchanger 41, first funtion part 5.
First funtion part 5 and the second funtion part 6 between the two and the second funtion part 6 be connected by conduction pipe (preferred embodiment of conduction pipe will be explained below) between the two with indoor heat exchanger 41.
The duty of control valve 2 comprises the first state and the second state, when control valve 2 is in the first state, and the pipeline conducting between the fluid issuing of compressor 1 and the first funtion part 5, the pipeline conducting between the fluid inlet of compressor 1 and indoor heat exchanger 41.
First funtion part 5 can carry out sensible heat heat release operation to the fluid of process (this fluid is preferably cold-producing medium), and the second funtion part 6 can carry out cold heat release operation to the fluid of process.
In the defroster that the embodiment of the present invention provides, first funtion part (Figure 1 shows that top) 5 of outdoor heat exchanger 42 can carry out sensible heat heat release operation to the fluid of process, second funtion part (Figure 1 shows that bottom) 6 of outdoor heat exchanger 42 can carry out cold heat release operation to the fluid of process, so when control valve 2 is in the first state, start compressor 1, the refrigerant vapour that the fluid issuing of compressor 1 exports is understood sensible heat heat release successively, is crossed cold heat release thus heat radiation when the first funtion part 5, the second funtion part 6, avoids the generation of frost.Meanwhile, distributed after the lower cold-producing medium of the temperature of heat enters indoor heat exchanger 41, the heat in indoor heat exchanger 41 can have been absorbed comparatively efficiently, thus good refrigeration can be reached in indoor.Conduction pipe is provided with restricting element 3 in the present embodiment, restricting element 3 is preferably electric expansion valve.When control valve 2 is in the first state, the fluid successively via the second funtion part 6 and conduction pipe Input connection fluid element 3 inputs indoor heat exchanger 41 by conduction pipe after restricting element 3.
Restricting element 3 has the effect reducing refrigerant vapor pressure.Electric expansion valve has the advantage being convenient to control.
One of them in the present embodiment in the influent stream end of restricting element 3 and two ports of the second funtion part 6 is connected, in two ports of the second funtion part 6 wherein another is connected with one of them in two ports of the first funtion part 5, in two ports of the first funtion part 5 wherein another is connected by pipeline with control valve 2.
The stream end that goes out of restricting element 3 is connected with the wherein Single port in two ports of indoor heat exchanger 41, and the another port in two ports of indoor heat exchanger 41 is connected by pipeline with control valve 2.
In said structure, restricting element 3 can carry out step-down operation to the cold-producing medium through heat release operation, then to the cold-producing medium input indoor heat exchanger 41 after step-down.
In the present embodiment, the first funtion part 5 is abutted against with both the second funtion parts 6 or is connected by Heat Conduction Material between the two.Abutting against with both the second funtion parts 6 when the first funtion part 5 or be connected by Heat Conduction Material between the two, the heat that the part that in both, distribute heat is more is distributed can carry out defrosting operation to whole outdoor heat exchanger 42.
In the present embodiment, the first funtion part 5 is arranged on above or below the second funtion part 6, is preferably arranged on the top of the second funtion part 6.
Because the thermal current carrying heat can rise from the bottom up, when the first funtion part 5 is arranged on the top of the second funtion part 6, this defroster is applied to heat pump machine when carrying out heating operation, and the heat that the second funtion part 6 of below is distributed can realize defrosting operation preferably.When the first funtion part 5 is arranged on the below of the second funtion part 6, when this defroster carries out refrigeration operation, the heat that the first funtion part 5 of below is distributed can realize defrosting operation preferably.
Preferred embodiment and preferred embodiment:
As shown in Figures 2 and 3, the defroster that the embodiment of the present invention provides, comprises indoor heat exchanger 41, outdoor heat exchanger 42, compressor 1 and control valve 2, and control valve 2 can be cross valve, and control valve 2 is preferably solenoid operated four-way valve.Outdoor heat exchanger 42 comprises the first funtion part (be preferably top) 5 and the second funtion part (being preferably bottom) 6, wherein: control valve 2 is arranged on the fluid issuing of compressor 1, pipeline between fluid inlet and indoor heat exchanger 41, first funtion part 5.
First funtion part 5 and the second funtion part 6 between the two and the second funtion part 6 be connected by conduction pipe between the two with indoor heat exchanger 41.
The duty of control valve 2 comprises the first state and the second state,
When control valve 2 is in the first state as shown in Figure 2, the pipeline conducting between the fluid issuing of compressor 1 and the first funtion part 5, the pipeline conducting between the fluid inlet of compressor 1 and indoor heat exchanger 41.First funtion part 5 can carry out sensible heat heat release operation to the fluid of process, and the second funtion part 6 can carry out cold heat release operation to the fluid of process.
When control valve 2 is in the second state as shown in Figure 3 and Figure 4, pipeline conducting between the fluid issuing of compressor 1 and indoor heat exchanger 41, pipeline conducting between the fluid inlet of compressor 1 and the first funtion part 5, pipeline between the fluid issuing of compressor 1 and the first funtion part 5 ends, and the pipeline between the fluid inlet of compressor 1 and indoor heat exchanger 41 ends.First funtion part 5 can carry out evaporation endothermic operation to the fluid of process, and the second funtion part 6 can carry out condensation heat release operation to the fluid of process.
Now, this defroster can be implemented in the defrosting operation under heating condition.Start compressor 1, the refrigerant vapour that the fluid issuing of compressor 1 exports can carry out condensation heat release operation successively when indoor heat exchanger 41, the heat distributed through the refrigerant vapour of indoor heat exchanger 41 can make indoor temperature raise, cold-producing medium indoor heat exchanger 41 flows out and when the second funtion part 6 of outdoor heat exchanger 42, can carry out further condensation heat release operation, the heat that the second funtion part 6 of outdoor heat exchanger 42 is distributed can provide heat to the top of outdoor heat exchanger 42 evaporation process that is next the first funtion part 5 carries out.Can be improved evaporating temperature and the evaporating pressure of this outdoor heat exchanger by this special construction, reduce frosting degree, the cold-producing medium through the second funtion part 6 of outdoor heat exchanger 42 finally can flow back to compressor 1 after the first funtion part 5 carries out evaporation endothermic operation.
Conduction pipe is provided with restricting element 3 in the present embodiment, restricting element 3 can be electric expansion valve.When control valve 2 is in the first state, the fluid successively via the second funtion part 6 and conduction pipe Input connection fluid element 3 inputs indoor heat exchanger 41 by conduction pipe after restricting element 3.When control valve 2 is in the second state, the fluid successively via the second funtion part 6 and conduction pipe Input connection fluid element 3 inputs the first funtion part 5 by conduction pipe after restricting element 3.
Restricting element 3 has the effect reducing refrigerant vapor pressure.Electric expansion valve has the advantage being convenient to control.
In the present embodiment, conduction pipe comprises the first check valve 7, second check valve 8, the 3rd check valve 9 and the 4th check valve 10, wherein:
The going out to flow of the influent stream end of the first check valve 7 and the second check valve 8 hold both in parallel and be all connected with one of them in two ports of the first funtion part 5, in two ports of the first funtion part 5 wherein another is connected by pipeline with control valve 2.
The influent stream end of the second check valve 8 respectively with the going out to flow and to hold and the influent stream end of the 3rd check valve 9 is connected of restricting element 3.
First check valve 7 go out stream end respectively with the 4th check valve 10 go out to flow hold and the second funtion part 6 two ports in one of them be connected, in two ports of the second funtion part 6 wherein another is connected with the influent stream end of restricting element 3.
3rd check valve 9 go out stream end be connected with one of them in the influent stream end of the 4th check valve 10 and two ports of indoor heat exchanger 41 respectively, in two ports of indoor heat exchanger 41 wherein another is connected by pipeline with control valve 2.
Four above-mentioned check valves have with low cost compared with the magnetic valve usually adopted in prior art, are convenient to the advantage connected.
Changed the flow direction of the cold-producing medium entering outdoor heat exchanger 42 by four check valves during above-mentioned pipeline connects, when that is outdoor heat exchanger 42 pipeline bottom enters the second funtion part 6 of cold-producing medium heat exchanger 42 outdoor (as heating mode), second funtion part 6 of outdoor heat exchanger 42 bottom is just equivalent to define one and extra crosses cool condenser, cold-producing medium is in the second funtion part 6 condensation heat release further of outdoor heat exchanger 42, ensure that the temperature of condenser is high, when cold-producing medium evaporates in the first funtion part 5 i.e. outdoor heat exchanger 42 upper strata pipeline of restricting element 3 at outdoor heat exchanger 42, second funtion part 6 of bottom exists owing to there being continuous waste heat of condensation, although so whole outdoor heat exchanger 42 is in evaporation low-temperature condition, but the outdoor heat exchanger monoblock of heat pump machine is as outdoor heat exchanger 42 frosting of condenser compared to existing technology, the effect of the present invention's defrosting obtains very large lifting.
When the first funtion part 5 i.e. line upper portion of cold-producing medium heat exchanger 42 outdoor enters (as refrigeration mode), above-mentioned outdoor heat exchanger 42 can give play to again the effectiveness of the entire area of condenser completely, does not affect the impact on condensation effect during refrigeration.Specific implementation: first cold-producing medium carries out sensible heat heat release in the first funtion part 5 i.e. upper pipeline of outdoor heat exchanger 42, enter the second funtion part 6 i.e. lower manifold of outdoor heat exchanger 42 subsequently in the cold heat release of further mistake, subsequently again through restricting element 3 evaporation endothermic in indoor heat exchanger 41.
In the present embodiment, both the first funtion part 5 and the second funtion part 6 can be two parts of existing overall heat exchange device, or are connected by Heat Conduction Material (such as: heat conductive rubber) between the two.In the present embodiment, the first funtion part 5 can be arranged on the top of the second funtion part 6.
With the embodiment of above-mentioned refrigerating part in like manner, because the thermal current carrying heat can rise from the bottom up, when the first funtion part 5 is arranged on the top of the second funtion part 6, this defroster is applied to heat pump machine when carrying out heating operation, and the heat that the second funtion part 6 of below is distributed can realize defrosting operation preferably.
The heat pump machine that the embodiment of the present invention provides, comprises the defroster that the arbitrary technical scheme of the invention described above preferred embodiment provides.
The heat pump machine that the embodiment of the present invention provides both ensure that not affecting the heat transfer effect of existing condenser when refrigerating operaton in turn ensure that the defrosting operation that can improve and carry out under heating condition.
Hereafter concentrate the two kinds of mode of operations setting forth heat pump machine provided by the invention:
1, refrigeration mode: the first funtion part 5 that temperature refrigerant vapor (or claim: high-temperature exhaust air) directly imports outdoor heat exchanger 42 carries out condensation heat release, carry out crossing cold coagulating further to outdoor heat exchanger 42 second funtion part 6 through the first check valve 7 heat conduction subsequently, complete condensed cold-producing medium after the reducing pressure by regulating flow at restricting element 3, enter evaporation endothermic in indoor heat exchanger 41 by the 3rd check valve 9, get back to compressor 1 subsequently.
2, heating mode: the high-temperature exhaust air of compressor 1 directly enters in indoor heat exchanger 41 and carries out condensation heat release, the second funtion part 6 condensation further of outdoor heat exchanger 42 is entered subsequently through the 4th check valve 10, complete further condensed cold-producing medium and enter restricting element 3 reducing pressure by regulating flow, entered the first funtion part 5 evaporation endothermic of outdoor heat exchanger 42 afterwards by the second check valve 8, finally the first funtion part 5 of heat exchanger 42 is sucked by compressor 1 after flowing out outdoor.
The Defrost method of the defroster that the embodiment of the present invention provides, at least comprises the following steps:
The first funtion part 5 refrigerant vapour being imported outdoor heat exchanger 42 carries out sensible heat heat release operation.
The second funtion part 6 that the fluid first funtion part 5 exported imports outdoor heat exchanger 42 carried out cold heat release operation.
The fluid second funtion part 6 exported imports indoor heat exchanger 41 and carries out evaporation endothermic operation.The Defrost method of the defroster that the embodiment of the present invention provides is further comprising the steps of:
Refrigerant vapour is imported indoor heat exchanger 41 and carry out condensation heat release operation.
The fluid that indoor heat exchanger 41 exports is imported the second funtion part 6 and carry out condensation heat release operation.
The fluid that second funtion part 6 exports is imported the first funtion part 5 and carry out evaporation endothermic operation.
The heat utilizing the second funtion part 6 to discharge carries out defrosting operation to outdoor heat exchanger 42.
Said method carries out defrosting operation when can be implemented in heating condition.
Arbitrary technical scheme disclosed in the invention described above unless otherwise stated, if the number range of it discloses, so disclosed number range is preferred number range, anyly it should be appreciated by those skilled in the art: preferred number range is only the numerical value that in many enforceable numerical value, technique effect is obvious or representative.Because numerical value is more, cannot be exhaustive, so the present invention just discloses component values to illustrate technical scheme of the present invention, and the above-mentioned numerical value enumerated should not form the restriction to the invention protection domain.
If employ the word such as " first ", " second " herein to limit parts, those skilled in the art should know: the use of " first ", " second " is only used to be convenient to describe carry out difference as not having outside Stated otherwise to parts, the implication that above-mentioned word is not special.
Simultaneously, if the invention described above discloses or relate to parts or the structural member of connection fastened to each other, so, unless otherwise stated, be fixedly connected with and can be understood as: can releasably be fixedly connected with (such as using bolt or screw to connect), also can be understood as: to be non-removablely fixedly connected with (such as rivet, weld), certainly, connection fastened to each other also can be replaced by integral type structure (such as use casting technique is integrally formed create) (obviously cannot adopt except integrally formed technique).
In addition, apply in arbitrary technical scheme disclosed in the invention described above for represent position relationship or shape term unless otherwise stated its implication comprise approximate with it, similar or close state or shape.Arbitrary parts provided by the invention both can be assembled by multiple independent part, and also can be one of the forming manufacture technics separate part out.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (9)
1. a defroster, is characterized in that, comprises indoor heat exchanger, outdoor heat exchanger, compressor and control valve, and described outdoor heat exchanger comprises the first funtion part and the second funtion part, wherein:
Described control valve is arranged on the pipeline between the fluid issuing of described compressor, fluid inlet and described indoor heat exchanger, described first funtion part;
Described first funtion part and described second funtion part between the two and described second funtion part be connected by conduction pipe between the two with described indoor heat exchanger;
The duty of described control valve comprises the first state and the second state,
When described control valve is in the first state, the pipeline conducting between the fluid issuing of described compressor and described first funtion part, the pipeline conducting between the fluid inlet of described compressor and described indoor heat exchanger; Described first funtion part can carry out sensible heat heat release operation to the fluid of process, and described second funtion part can carry out cold heat release operation to the fluid of process;
When described control valve is in the second state, pipeline conducting between the fluid issuing of described compressor and described indoor heat exchanger, pipeline conducting between the fluid inlet of described compressor and described first funtion part, pipeline between the fluid issuing of described compressor and described first funtion part ends, and the pipeline between the fluid inlet of described compressor and described indoor heat exchanger ends; Described first funtion part can carry out evaporation endothermic operation to the fluid of process, and described second funtion part can carry out condensation heat release operation to the fluid of process.
2. defroster according to claim 1, it is characterized in that, described conduction pipe is provided with restricting element, when described control valve is in the first state, the fluid inputting described restricting element via described second funtion part and described conduction pipe successively inputs described indoor heat exchanger by described conduction pipe after described restricting element;
When described control valve is in the second state, the fluid inputting described restricting element via described second funtion part and described conduction pipe successively inputs described first funtion part by described conduction pipe after described restricting element.
3. defroster according to claim 2, is characterized in that, described restricting element is electric expansion valve.
4. defroster according to claim 2, is characterized in that, described conduction pipe comprises the first check valve, the second check valve, the 3rd check valve and the 4th check valve, wherein:
The going out to flow of the influent stream end of described first check valve and described second check valve hold both in parallel and be all connected with one of them in two ports of described first funtion part, in two ports of described first funtion part wherein another is connected by pipeline with described control valve;
The influent stream end of described second check valve respectively with the going out to flow and to hold and the influent stream end of described 3rd check valve is connected of described restricting element;
Described first check valve go out stream end respectively with described 4th check valve go out to flow hold and described second funtion part two ports in one of them be connected, in two ports of described second funtion part wherein another is connected with the influent stream end of described restricting element;
Described 3rd check valve go out stream end be connected with one of them in the influent stream end of described 4th check valve and two ports of described indoor heat exchanger respectively, in two ports of described indoor heat exchanger wherein another is connected by pipeline with described control valve.
5. defroster according to claim 1, is characterized in that, described control valve is solenoid operated four-way valve.
6. defroster according to claim 1, is characterized in that, described first funtion part is abutted against with described second funtion part or is connected by Heat Conduction Material between the two.
7., according to the arbitrary described defroster of claim 1-6, it is characterized in that, described first funtion part is arranged on the top of described second funtion part.
8. a heat pump machine, is characterized in that, comprises the arbitrary described defroster of claim 1-7.
9. a Defrost method for defroster, is characterized in that, at least comprises the following steps:
The first funtion part refrigerant vapour being imported outdoor heat exchanger carries out sensible heat heat release operation;
The second funtion part that the fluid that described first funtion part exports imports described outdoor heat exchanger was carried out cold heat release operation;
The fluid that described second funtion part exports is imported indoor heat exchanger and carries out evaporation endothermic operation;
The Defrost method of described defroster is further comprising the steps of:
Refrigerant vapour is imported described indoor heat exchanger and carry out condensation heat release operation;
The fluid exported by described indoor heat exchanger imports described second funtion part and carries out condensation heat release operation;
The fluid that described second funtion part exports is imported described first funtion part and carries out evaporation endothermic operation;
The heat utilizing described second funtion part to discharge carries out defrosting operation to described outdoor heat exchanger.
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| DE102017214941A1 (en) | 2017-08-25 | 2019-02-28 | Dometic Sweden Ab | Recreational vehicle, cooling device, control system and method of controlling the cooling device |
| US10941955B2 (en) | 2017-10-27 | 2021-03-09 | Dometic Sweden Ab | Systems, methods, and apparatuses for providing communications between climate control devices in a recreational vehicle |
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| CN103954087A (en) | 2014-07-30 |
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