CN101749904A - Hot air bypassing continuous heat-supply and defrost cycle structure of air conditioner - Google Patents
Hot air bypassing continuous heat-supply and defrost cycle structure of air conditioner Download PDFInfo
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- CN101749904A CN101749904A CN200810153761A CN200810153761A CN101749904A CN 101749904 A CN101749904 A CN 101749904A CN 200810153761 A CN200810153761 A CN 200810153761A CN 200810153761 A CN200810153761 A CN 200810153761A CN 101749904 A CN101749904 A CN 101749904A
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Abstract
The invention discloses a hot air bypassing continuous heat-supply and defrost cycle structure of an air conditioner, simple opening and closing of a capillary pipe and a solenoid valve are adopted to carry out the automatic adjustment of the refrigerant flow to realize the indoor continuous heat supply when the defrosting is carried out outside, the cycle structure has the advantages of simple control, less mechanical action and the like, thereby increasing the reliability of the air-conditioner system and having wide market application prospect.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of hot air bypassing continuous heat-supply and defrost cycle structure of air-conditioner.
Background technology
Air-conditioner is a kind of electrical installation of indoor temperature being regulated and remained on the required situation of user.The air conditioning effect of air-conditioner is finished jointly by cooling cycle system and air circulation system, carry out heat exchange to realize room temperature lowering or intensification, for people provide fresh, comfortable indoor air environment by the cold-producing medium and the indoor flow air that circulate in its refrigeration system.
The cooling cycle system of air-conditioner comprises heat exchanger, compressor and throttling device.Air circulation system comprises fan and fan electromotor, inlet and outlet and air filter.The cooling cycle system of air-conditioner and the operation of air circulation system are controlled by electrical apparatus control system, under the control of electrical apparatus control system, cold-producing medium in the air-conditioner cooling cycle system absorbs heat and heat release in the circulation of compression one condensation one throttling one evaporation, and carry out heat exchange with room air by the fan forced flow of air circulation system, to realize room temperature lowering or intensification.
Air-conditioner is broadly divided into package AC plant and detachable air conditioner.Package AC plant all is contained in all parts in the casing, is installed in indoor and outdoor junction, as is installed in the window air conditioner on the room window.
Detachable air conditioner is made up of the indoor set and the off-premises station that separate, can be divided into cabinet-type, wall-hanging and ceiling mounting type etc. according to the set-up mode of indoor set.The heat exchanger of evaporimeter or condenser effect has been set respectively in indoor set and off-premises station.Cold-producing medium circulates in evaporimeter and condenser by the tube connector between indoor set and the off-premises station and carries out the heat exchange circulation, moves with the refrigerating state operation that realizes air-conditioner or the state that heats.The action adjustment flow of refrigerant direction that the air-conditioner refrigeration or the state that heats move by the control four-way change-over valve realizes.Air-conditioner carries out refrigerating state when operation, and cold-producing medium airborne heat in the absorption chamber in indoor heat exchanger becomes gaseous state by liquid state, after the compressed again machine compression, in outdoor heat exchanger by the gaseous state liquefy to the outdoor heat of emitting.Air-conditioner heats state operation, and cold-producing medium heat in the absorption chamber outer air in outdoor heat exchanger becomes gaseous state by liquid state, after the compressed again machine compression, in indoor heat exchanger by the gaseous state liquefy, to the indoor heat of emitting.
Fig. 1 is the sketch of existing continuous heat-supply and defrost loop structure.In existing continuous heat-supply and defrost loop structure, flow-limiting valve 1 is used for when defrosting, the flow of control from the compressor to the outdoor heat exchanger and between the fluid reservoir, check valve 2 usefulness are to control the flow direction of cold-producing medium, expansion valve 6 is used for cold-producing medium is carried out the step-down throttling, and being used to control the pressure of bypass, capillary 8 falls, thus indirect adjusting flow.
At needs during to indoor heating, cold-producing medium compresses for 3 li at compressor, the HTHP gaseous coolant that flows out from compressor 3 passes through cross valve 4, carry out heat release through indoor condenser 5 then, realize indoor heating demand, carry out the step-down throttling through expansion valve 6 afterwards, at last through behind the outdoor evaporimeter 7 evaporation absorption heats, get back to compressor 3 by capillary 8, finish whole heat supply circulation.
In view of having carried out a period of time of after when heating, outdoor heat exchanger (being outdoor evaporimeter 7) is owing to evaporate heat absorption, the outdoor heat exchanger coil temperature reduces, the easy frosting of outdoor heat exchanger coil pipe, cause this outdoor heat exchanger heat exchange efficiency to reduce, can't be normally and outdoor air carry out exchange heat, thereby influence indoor heat supply, therefore need carry out the defrosting of heat exchanger, at this moment flow-limiting valve 1 is opened according to certain requirement, make the cold-producing medium (refrigerant) of part heat flow to outside and fluid reservoir respectively simultaneously through bypass pipe 9, the warm refrigerant that flows to the outside is used for the defrosting of outdoor heat exchanger, the warm refrigerant that flows to fluid reservoir is used to improve the low pressure of outdoor heat exchanger, improves the outside defrosting effect.Because some hot cold-producing medium has flowed to indoor heat exchanger (condenser) side through capillary 8, therefore indoor heating will can not stop.
Because flow-limiting valve 1 is to carry out aperture according to certain pulse to change, and therefore, can constantly regulate the flow that flows through bypass pipe, the variation of pulse is very complicated, therefore, and the control more complicated and the difficulty of this circulation.Simultaneously, because being continuous variation by mechanical part, the continuous variation of aperture causes, so there was a mechanical failure easily for the mechanical action repeatedly of this flow-limiting valve 1, reduced the reliability of system.
Summary of the invention
In view of this, the hot air bypassing continuous heat-supply and defrost cycle structure that the purpose of this invention is to provide a kind of air-conditioner, this structure utilizes the simple switching of capillary and magnetic valve to carry out the automatic adjusting of cold medium flux, indoor uninterrupted heat supply when realizing outdoor defrosting, it is simple that this loop structure has control, advantages such as mechanical action is few have improved the reliability of air-conditioning system.
For this reason, the invention provides a kind of hot air bypassing continuous heat-supply and defrost cycle structure of air-conditioner, include interconnective compressor 3, outdoor heat exchanger 7, indoor heat exchanger 5, pipeline is provided with second capillary 62 between described outdoor heat exchanger 7 and the indoor heat exchanger 5, pipeline is provided with cross valve 4 between the outlet side 32 of described compressor 3 and the outlet side 71 of outdoor heat exchanger 7, be disposed with magnetic valve 1 on the pipeline between the outlet side 32 of described compressor 3 and the inlet side 72 of outdoor heat exchanger 7, check valve 2 and three capillary 63, pipeline is provided with first capillary 61 between the node between described magnetic valve 1 and the check valve 2 and the inlet side 31 of compressor 3, node between the inlet side 31 of described first capillary 61 and compressor 3 is connected with the outlet side 71 of outdoor heat exchanger 7 and with the outlet side 32 of compressor 3 by the pipeline that is provided with cross valve 4, the outlet side 32 of described compressor 3 and the pipeline between the outdoor heat exchanger 5 are provided with cross valve 4, pipeline between the outlet side 32 of described magnetic valve 1 and compressor 3 is provided with first bypass pipe 10, pipeline between described three capillary 63 and the uniguide 2 is provided with second bypass pipe 20, pipeline between the inlet side 31 of described first capillary 61 and compressor 3 is provided with the 3rd bypass pipe 30, described first shunt valve 10 is connected with the outlet side 32 of compressor 3, described second shunt valve 20 is connected with outdoor heat exchanger 7, and described the 3rd bypass pipe 30 is connected with fluid reservoir.
Preferably, when air-conditioner carried out defrost operation, described magnetic valve 1 was in open mode.
Preferably, described first capillary 61, second capillary 62, three capillary 63 are diameter and length capillary inequality.
By above technical scheme provided by the invention as seen, the invention provides a kind of hot air bypassing continuous heat-supply and defrost cycle structure of air-conditioner, this structure utilizes the simple switching of capillary and magnetic valve to carry out the automatic adjusting of cold medium flux, indoor uninterrupted heat supply when realizing outdoor defrosting, it is simple that this loop structure has control, advantages such as mechanical action is few have improved the reliability of air-conditioning system, have higher market application foreground.
Description of drawings
Fig. 1 is the sketch of existing continuous heat-supply and defrost loop structure;
Fig. 2 is the sketch of the hot air bypassing continuous heat-supply and defrost cycle structure of a kind of air-conditioner provided by the invention.
The specific embodiment
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.
Fig. 2 is the sketch of the hot air bypassing continuous heat-supply and defrost cycle structure of a kind of air-conditioner provided by the invention.
Referring to Fig. 2, the invention provides a kind of hot air bypassing continuous heat-supply and defrost cycle structure of air-conditioner, this structure comprises: interconnective compressor 3, outdoor heat exchanger 7 and indoor heat exchanger 5, be connected by pipeline between described outdoor heat exchanger 7 and the indoor heat exchanger 5, the pipeline that described outdoor heat exchanger 7 is connected with indoor heat exchanger 5 is provided with second capillary 62.
Connect by pipeline between described compressor 3 and the outdoor heat exchanger 7, pipeline between the outlet side 32 of described compressor 3 and the outlet side 71 of outdoor heat exchanger 7 is provided with cross valve 4, be disposed with magnetic valve 1 on the pipeline between the outlet side 32 of described compressor 3 and the inlet side 72 of outdoor heat exchanger 7, check valve 2 and three capillary 63, node between described magnetic valve 1 and the check valve 2 is connected with the inlet side 31 of compressor 3 by pipeline, the pipeline of the node between described magnetic valve 1 and the check valve 2 and the inlet side 31 of compressor 3 is provided with first capillary 61, and the node between the inlet side 31 of described first capillary 61 and compressor 3 is connected with the outlet side 71 of outdoor heat exchanger 7 and is connected with the outlet side 32 of compressor 3 by the pipeline that is provided with cross valve 4.
The outlet side 32 of described compressor 3 and outdoor heat exchanger 5 are connected by pipeline, and the outlet side 32 of described compressor 3 and the pipeline between the outdoor heat exchanger 5 are provided with cross valve 4.
In addition, pipeline between the outlet side 32 of described magnetic valve 1 and compressor 3 is provided with first bypass pipe 10, pipeline between described three capillary 63 and the uniguide 2 is provided with second bypass pipe 20, and the pipeline between the inlet side 31 of described first capillary 61 and compressor 3 is provided with the 3rd bypass pipe 30.
Described first shunt valve 10 is connected with the outlet side 32 of compressor 3, and described second shunt valve 20 is connected with outdoor heat exchanger 7, and described the 3rd bypass pipe 30 is connected with fluid reservoir.
In the present invention, above-mentioned first capillary 61, second capillary 62, three capillary 63 can be diameter and length capillary inequality.
In the hot air bypassing continuous heat-supply and defrost cycle structure of air-conditioner of the present invention, changed the flow-limiting valve in the original structure into magnetic valve 1,1 of magnetic valve plays a part to open and close, cold-producing medium (refrigerant) is through after first bypass pipe 10, be divided into two-way, respectively through second bypass pipe 20 and the 3rd bypass pipe 30, enter outdoor heat exchanger 7 through second bypass pipe 20, enter into fluid reservoir through the 3rd bypass pipe 30, two capillaries (i.e. the three capillary 63 and first capillary 61) are arranged respectively in these two branch roads, these two capillaries 6 are regulated its resistance by its length and diameter, thereby regulate the flow through wherein cold-producing medium.In addition, in the hot air bypassing continuous heat-supply and defrost cycle structure of air-conditioner provided by the invention, also original expansion valve has been changed into second capillary 62, cold-producing medium has been carried out the step-down throttling.
The following describes the detailed process that utilization the present invention heats and defrosts:
At first, cold-producing medium compresses for 3 li at compressor, the HTHP gaseous coolant that flows out from compressor 3 passes through cross valve 4, carry out heat release through indoor condenser 5 then, realize indoor heating demand, carry out the step-down throttling through capillary afterwards, evaporate through outdoor evaporimeter 7 at last and absorb heat, get back to compressor 3, finish the whole circulation that heats.When air conditioner heat-production has carried out a period of time of after, coil pipe frosting in the outdoor heat exchanger 7, cause the heat exchange effect to reduce, thereby influence indoor heat supply, therefore need carry out the defrosting of outdoor heat exchanger, at this moment open magnetic valve 1, the cold-producing medium of heat is through behind the magnetic valve 1, flow to outdoor heat exchanger 7 and fluid reservoir respectively through second bypass pipe 20 and the 3rd bypass pipe 30, wherein, the warm refrigerant that flows to the outside is used for the defrosting of outdoor heat exchanger, and the warm refrigerant that flows to fluid reservoir is used to improve the low pressure of outdoor heat exchanger, improves the outside defrosting effect.Since some hot refrigerant flow direction the indoor heat exchanger side, so heating of indoor heat exchanger (being condenser) will can not stop.Therefore, in the hot air bypassing continuous heat-supply and defrost cycle structure of air-conditioner of the present invention, the flow of cold-producing medium is next self-regulating by the capillary of two bypass, does not therefore need extra control, and therefore control is simple, has improved the reliability of air-conditioner.
Need to prove, the effect of capillary and expansion valve is the same, all be used for cold-producing medium is carried out the step-down throttling, only expansion valve can be regulated aperture automatically according to measured pressure, and capillary can not, after selected capillary, its step-down restriction effect has just been decided to get off, because capillary is more cheap, therefore, in fairly simple system, can substitute expansion valve with capillary and carry out the step-down throttling.
In view of magnetic valve can be regulated aperture automatically according to certain pulse rule, thereby regulate flow through its cold-producing medium, but control is complicated, the present invention uses magnetic valve 1 by opening and closing the break-make of carrying out cold-producing medium, branch road in its back adopts capillary to carry out the adjusting of refrigerant flow then, and effect is the same.For example, if the capillary of certain bypass is long more, diameter is more little, this resistance capillaceous is just big more so, thereby the flow through this cold-producing medium capillaceous will be more little, just the cold-producing medium by second bypass pipe 20 and the 3rd bypass pipe 30 is just more little, thereby realizes the adjusting of refrigerant flow.
Because the mechanical part that the present invention does not have in the original loop structure as flow-limiting valve etc. constantly changes in time has only magnetic valve 1 to open and close two actions back and forth, so uses the used mechanical action of the present invention few, thereby can improve the reliability of air-conditioning.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. the hot air bypassing continuous heat-supply and defrost cycle structure of an air-conditioner, it is characterized in that, include interconnective compressor (3), outdoor heat exchanger (7), indoor heat exchanger (5), pipeline is provided with second capillary (62) between described outdoor heat exchanger (7) and the indoor heat exchanger (5), pipeline is provided with cross valve (4) between the outlet side (32) of described compressor (3) and the outlet side (71) of outdoor heat exchanger (7), be disposed with magnetic valve (1) on the pipeline between the outlet side (32) of described compressor (3) and the inlet side (72) of outdoor heat exchanger (7), check valve (2) and three capillary (63), pipeline is provided with first capillary (61) between the node between described magnetic valve (1) and the check valve (2) and the inlet side (31) of compressor (3), node between the inlet side (31) of described first capillary (61) and compressor (3) is connected with the outlet side (71) of outdoor heat exchanger (7) and with the outlet side (32) of compressor (3) by the pipeline that is provided with cross valve (4), the outlet side (32) of described compressor (3) and the pipeline between the outdoor heat exchanger (5) are provided with cross valve (4), pipeline between the outlet side (32) of described magnetic valve (1) and compressor (3) is provided with first bypass pipe (10), pipeline between described three capillary (63) and the check valve (2) is provided with second bypass pipe (20), pipeline between the inlet side (31) of described first capillary (61) and compressor (3) is provided with the 3rd bypass pipe (30), described first shunt valve (10) is connected with the outlet side (32) of compressor (3), described second shunt valve (20) is connected with outdoor heat exchanger (7), and described the 3rd bypass pipe (30) is connected with fluid reservoir.
2. continuous heat-supply and defrost loop structure as claimed in claim 1 is characterized in that, when carrying out defrost operation, described magnetic valve (1) is in open mode.
3. continuous heat-supply and defrost loop structure as claimed in claim 1 or 2 is characterized in that, described first capillary (61), second capillary (62), three capillary (63) are diameter and length capillary inequality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810153761A CN101749904A (en) | 2008-12-05 | 2008-12-05 | Hot air bypassing continuous heat-supply and defrost cycle structure of air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810153761A CN101749904A (en) | 2008-12-05 | 2008-12-05 | Hot air bypassing continuous heat-supply and defrost cycle structure of air conditioner |
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| CN101749904A true CN101749904A (en) | 2010-06-23 |
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| CN200810153761A Pending CN101749904A (en) | 2008-12-05 | 2008-12-05 | Hot air bypassing continuous heat-supply and defrost cycle structure of air conditioner |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645064A (en) * | 2012-05-24 | 2012-08-22 | 钟学斌 | Defrosting method and device of air source heat pump set |
| CN102901156A (en) * | 2012-11-16 | 2013-01-30 | 中国船舶重工集团公司第七0四研究所 | Frost preventing and removing system and frost preventing and removing method of heat pipe type air conditioner |
| CN103673737A (en) * | 2012-12-17 | 2014-03-26 | 摩尔动力(北京)技术股份有限公司 | Frost-proof cooling unit |
| CN103712388A (en) * | 2013-09-26 | 2014-04-09 | 宁波奥克斯空调有限公司 | Novel defrosting system and control method thereof |
| CN104654685A (en) * | 2013-11-19 | 2015-05-27 | 美的集团股份有限公司 | Defrosting control method and device for heat pump system |
| CN107917562A (en) * | 2017-11-22 | 2018-04-17 | 广州芯康医疗科技有限公司 | Hot gas and electric heating mixing defrosting system and method for low-temperature air-cooling refrigeration system |
| CN110567183A (en) * | 2019-09-16 | 2019-12-13 | 珠海格力电器股份有限公司 | Air conditioner and defrosting control method thereof |
| CN111373216A (en) * | 2018-09-26 | 2020-07-03 | 日立江森自控空调有限公司 | Air-conditioning hot water supply device |
| CN111503825A (en) * | 2020-04-29 | 2020-08-07 | 广东美的制冷设备有限公司 | Control method of air conditioning system and air conditioning system |
| 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
- 2008-12-05 CN CN200810153761A patent/CN101749904A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645064A (en) * | 2012-05-24 | 2012-08-22 | 钟学斌 | Defrosting method and device of air source heat pump set |
| CN102901156A (en) * | 2012-11-16 | 2013-01-30 | 中国船舶重工集团公司第七0四研究所 | Frost preventing and removing system and frost preventing and removing method of heat pipe type air conditioner |
| CN103673737A (en) * | 2012-12-17 | 2014-03-26 | 摩尔动力(北京)技术股份有限公司 | Frost-proof cooling unit |
| CN103712388B (en) * | 2013-09-26 | 2016-12-07 | 宁波奥克斯空调有限公司 | A kind of defrosting system and control method thereof |
| CN103712388A (en) * | 2013-09-26 | 2014-04-09 | 宁波奥克斯空调有限公司 | Novel defrosting system and control method thereof |
| CN104654685B (en) * | 2013-11-19 | 2017-06-06 | 美的集团股份有限公司 | The defrosting control method and device of heat pump |
| CN104654685A (en) * | 2013-11-19 | 2015-05-27 | 美的集团股份有限公司 | Defrosting control method and device for heat pump system |
| CN107917562A (en) * | 2017-11-22 | 2018-04-17 | 广州芯康医疗科技有限公司 | Hot gas and electric heating mixing defrosting system and method for low-temperature air-cooling refrigeration system |
| CN111373216A (en) * | 2018-09-26 | 2020-07-03 | 日立江森自控空调有限公司 | Air-conditioning hot water supply device |
| CN111373216B (en) * | 2018-09-26 | 2022-01-18 | 日立江森自控空调有限公司 | Air-conditioning hot water supply device |
| CN110567183A (en) * | 2019-09-16 | 2019-12-13 | 珠海格力电器股份有限公司 | Air conditioner and defrosting control method thereof |
| CN111503825A (en) * | 2020-04-29 | 2020-08-07 | 广东美的制冷设备有限公司 | Control method of air conditioning system and air conditioning system |
| 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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Open date: 20100623 |