CN1769819A - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
CN1769819A
CN1769819A CNA2005101140359A CN200510114035A CN1769819A CN 1769819 A CN1769819 A CN 1769819A CN A2005101140359 A CNA2005101140359 A CN A2005101140359A CN 200510114035 A CN200510114035 A CN 200510114035A CN 1769819 A CN1769819 A CN 1769819A
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CN
China
Prior art keywords
refrigerant
valve
heat converter
bypass circulation
way valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA2005101140359A
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Chinese (zh)
Other versions
CN100353130C (en
Inventor
西原义和
佐藤新一
内山邦泰
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Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP2004318985A priority Critical patent/JP2006132797A/en
Priority to JP2004318985 priority
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of CN1769819A publication Critical patent/CN1769819A/en
Application granted granted Critical
Publication of CN100353130C publication Critical patent/CN100353130C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02Defrosting cycles
    • F25B47/022Defrosting cycles hot gas defrosting
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06Removing frost

Abstract

The invention provides an air conditioner for performing a defrosting operation by continuing a heating operation. A first by-pass circuit 6 for connecting the suction side of a compressor 1 with a part between an indoor heat exchanger 3 and a decompression apparatus 4 of a heat pump type refrigerating cycle is disposed, and a two-way valve 7 and a refrigerant heater 8 are disposed in the first by-pass circuit 6. A second by-pass circuit 9 for connecting a part between the decompression apparatus 4 and an outdoor heat exchanger 5 to a part between a four-way valve 2 and the indoor heat exchanger 3 connected to the refrigerating cycle is provided, and a two-way valve 10 is disposed in the second by-pass circuit 9. When the outdoor heat exchanger 5 is defrosted, the two-way valve 7 of the first by-pass circuit 6 and the two-way valve 10 of the second by-pass circuit 9 are opened to perform the heating and defrosting operations.

Description

Air-conditioner
Technical field
The present invention relates to a kind of heating when operation by heat pump can be while proceeding to heat operation to carry out the air-conditioner of defrost operation attached to the frost on the outdoor heat converter.
Background technology
At present, the general Defrost mode that cross valve is switched, makes the refrigerant reverse flow in the freezing loop that adopts of the Defrost mode in the heat pump air conditioner.
That is the flow of refrigerant direction during defrost operation is identical with when refrigeration, allows the refrigerant of HTHP flow in outdoor heat converter, thereby will melt attached to the frost on the heat exchanger.
But in such Defrost mode, the heat exchanger of an indoor side has become evaporimeter during owing to defrosting, so can produce the problem that indoor temperature descends, the user can have chilling sensation suddenly.
As the solution of this problem, while the someone has proposed to heat the scheme that defrost operation is carried out in operation.
Fig. 6 is the pie graph of the freezing loop in the existing air-conditioner that embodies this scheme.
As shown in Figure 6, compressor 101, cross valve 102, indoor heat converter 110, expansion mechanism and outdoor heat converter 103 connect by cryogen circuit, constitute the freezing loop of heat-pump-type.In this freezing loop, be provided with: the refrigerant heating circuit that the suction side of pipeline between above-mentioned expansion mechanism and the above-mentioned outdoor heat converter 103 and above-mentioned compressor 101 is linked, has refrigerant heater 104; And the discharge side of the compressor 101 in the above-mentioned freezing loop is connected to and above-mentioned outdoor heat converter 103 and above-mentioned cross valve 102 between defrost circuit.When heat pump in above-mentioned freezing loop is operated, above-mentioned outdoor heat converter 103 is defrosted, by the refrigerant after 104 heating of above-mentioned refrigerant heater flow through above-mentioned compressor 101 after shunt, one the road flows into above-mentioned indoor heat converter 110, and another road is from above-mentioned defrost circuit inflow outdoor heat exchanger 103.The refrigerant of these shuntings converges again in the porch of above-mentioned refrigerant heating circuit, is heated once more by above-mentioned refrigerant heater 104 then.
The method that solves the problem in the prior art in the foregoing invention is, thereby when making heat pump operation carry out defrost operation to off-premises station, proceed to heat operation on one side, Yi Bian carry out defrost operation (example wherein can be opened flat 11-182994 communique, Fig. 6 with reference to the Japanese patent gazette spy).
But, the problem below can producing in so freezing loop fashion.
In the formation of this freezing loop, when carrying out defrost operation, because two-way valve 109a is open, the refrigerant that compressor 101 is discharged will flow between outdoor heat converter 103 and cross valve 102.Flow in the compressor suction for the refrigerant hot gas that is used for defrosting is unlikely, two-way valve 106 need be set.
In addition, because two-way valve 106 is connected in the suction side of compressor 101, the pressure loss in order to reduce refrigeration and to heat operation needs to use the very big two-way valve 106 of bore.Like this, the cost of two-way valve just becomes very high.
In addition, thereby make open refrigerant is heated when carrying out the defrost operation mode of two-way valve 108 switching to from the heat pump operation mode, because the flow direction of the refrigerant of outdoor heat converter 103 will reverse, before carrying out defrost operation, need end sealing, so two-way valve 107 need be set in the porch of outdoor heat converter 103 with valve 107.
So, just need 4 two-way valves in this freezing loop, cause complex structure, cost uprises.
In addition and since defrost after refrigerant and the refrigerant after indoor heat converter 110 heat releases can converge, if the refrigerant pressure of meet than the refrigerant pressure height after defrosting, refrigerant fails to be convened for lack of a quorum in the inflow outdoor heat exchanger; On the contrary, if the refrigerant pressure of meet is lower than the refrigerant pressure after defrosting, refrigerant can inflow indoor heat exchanger one side.Therefore, while can not realize sometimes heating and carry out defrost operation.
In addition, because refrigerant and the refrigerant after indoor heat converter 110 has been put heat after defrosting can converge, therefore, noise takes place easily in the refrigerant.In order to solve above-mentioned pressure balance and refrigerant souffle problem, need to be provided with the refrigerant convergence device in some cases.
In addition, at above-mentioned refrigerant meet, refrigerant circulation quantity will increase, and the pressure loss also will increase.As its solution, need to strengthen the caliber of pipe arrangement, but will produce the big problem of volume change of heater like this.
In addition, when operation took place in refrigerating circuit, the pipe interior in the refrigerant heater 104 had been full of low-pressure refrigerant, and the temperature of refrigerant heater 104 is very low usually, so be easy to produce dewfall on the refrigerant heater 104.In addition, break down at two-way valve 108, when refrigerant takes place to leak, also be easy to generate dewfall in the refrigerant heater.Like this, especially adopt under the occasion of heat-conduction-type heater etc. at the refrigerant heater, just there are very big problem in the reliability of refrigerant heater, security aspect.
Summary of the invention
The present invention makes in order to address the above problem, its purpose is to provide a kind of like this air-conditioner, freezing loop in this air-conditioner is made of simple bypass circulation, can proceed to heat operation on one side, Yi Bian carry out can not producing the stable defrost operation of refrigerant noise and pressure balance problem.
To achieve these goals, comprise in the air-conditioner of the present invention: compressor, cross valve, indoor heat converter, pressure reducer, outdoor heat converter are connected the freezing loop of the heat-pump-type that forms by cryogen circuit; Will with pipeline between joining indoor heat converter of this freezing loop and the pressure reducer, the 1st bypass circulation that connected with pipeline between cross valve and the outdoor heat converter, the 1st bypass circulation is provided with two-way valve and refrigerant heater.In addition, also be provided with and the pipeline between the pipeline between cross valve and the indoor heat converter and pressure reducer and the outdoor heat converter connected/or the 2nd bypass circulation that the pipeline between the pipeline between compressor and the cross valve and pressure reducer and the outdoor heat converter is connected, the 2nd bypass circulation is provided with two-way valve.When outdoor heat converter is defrosted, make the two-way valve on the 1st bypass circulation open, make the 1st bypass of the suction side of the refrigerant inflow compressor after the heating of refrigerant heater to operate; Operate with the 2nd bypass that the two-way valve that makes on the 2nd bypass circulation opens, makes refrigerant to pass through outdoor heat converter.
The effect that the present invention realizes is: on one side can proceed to heat operation, Yi Bian carry out defrost operation.
Comprise in the air-conditioner of the 1st scheme of the present invention: compressor, cross valve, indoor heat converter, pressure reducer, outdoor heat converter are connected the freezing loop of the heat-pump-type that forms by cryogen circuit; Will with pipeline between joining above-mentioned indoor heat converter of this freezing loop and the above-mentioned pressure reducer, the 1st bypass circulation that connected with pipeline between cross valve and the outdoor heat converter, above-mentioned the 1st bypass circulation is provided with two-way valve and refrigerant heater.In addition, also be provided with above-mentioned cross valve and the pipeline between the pipeline between the above-mentioned indoor heat converter and above-mentioned pressure reducer and the above-mentioned outdoor heat converter that will connect with above-mentioned freezing loop to be connected/or the 2nd bypass circulation that connected of the above-mentioned compressor that will connect with above-mentioned freezing loop and the pipeline between the pipeline between the above-mentioned cross valve and above-mentioned pressure reducer and the above-mentioned outdoor heat converter, above-mentioned the 2nd bypass circulation is provided with two-way valve.When above-mentioned outdoor heat converter is defrosted, make the two-way valve on above-mentioned the 1st bypass circulation open, make the 1st bypass of the suction side of the refrigerant inflow above-mentioned compressor after the heating of refrigerant heater to operate; With make two-way valve on above-mentioned the 2nd bypass circulation open, make the 2nd bypass operation of refrigerant by above-mentioned outdoor heat converter.Like this, on one side can heat operation, Yi Bian implement defrost operation.
In addition, while owing to be to continue execution to heat operation, carry out defrost operation, therefore refrigerant can not send abnormal sound when cross valve switches.
In addition, cross valve does not switch during owing to defrosting, so pressure oscillation is little, the variation of compressor oil is also little, thereby can improve the operating reliability of compressor.
In addition, even it is very long to connect pipe arrangement, but, can in the defrost operation process, not cause that therefore the oil level of compressor descends, so in the very long product of pipe arrangement, can make compressor realize the operation of high reliability because of pipe arrangement is very long because defrost cycle is carried out outdoor yet.
In addition, owing to be only to utilize a part of refrigerant to defrost,, therefore can reduce the volume of refrigerant heater so can not flow into too much refrigerant in the refrigerant heating part.
In addition, even carrying out refrigeration when operation, because the refrigerant gas of HTHP can rest in the refrigerant heater, so the refrigerant heater always can remain on the close dew temperature of ambient gas, therefore, the phenomenon of dewfall can not take place in the refrigerant heater.
The 2nd scheme is specially, the pressure reducer of the 1st scheme is an electromagnetic expanding valve, the 1st bypass circulation and the 2nd bypass circulation coupled position of an end in freezing loop separately is positioned at the front and back of above-mentioned expansion valve, closes the throttle operation of valve or approximate sealing when defrost operation.By forming such formation, the electromagnetic expanding valve that is used in the freezing loop of common heat pump realizing freezing and heats operation just can be used for defrosting, cryogen flow that is used to heat that produces when refrigerant is heated in realization and the cryogen flow that is used to defrost be the function of disjunction in addition, heat and defrost circuit with regard to constituting with 2 two-way valves, thereby can simplify the structure of outdoor piping, reduce manufacturing cost.
The 3rd scheme is specially, and the pressure reducer in the 1st scheme is a two-way valve, and the 1st bypass circulation and the 2nd bypass circulation coupled position of an end in freezing loop separately is positioned at the front and back of above-mentioned two-way valve, makes above-mentioned two-way valve close the valve operation when defrost operation.By forming such structure, even if also can be used as pressure reducer, uses two-way valve, can proceed to heat operation, and meanwhile carry out defrost operation, thus can further reduce cost.
The 4th scheme is specially, and is connected with pressure reducer or electromagnetic expanding valve on the 2nd bypass circulation in each scheme of the 1st~3, can adjust the flow of refrigerant.By carrying out such formation, can also adjust the defrosting heat according to long-pending frost amount.
The 5th scheme is specially, and is provided with pressure reducer between above-mentioned refrigerant heater in each scheme of the 1st~4 and the indoor heat converter, makes above-mentioned refrigerant heater play the effect of evaporimeter.By forming such formation, refrigerant is being heated by heater by pressure reducer, after reducing pressure again, thereby can improve the heat absorption efficiency of refrigerant, form high efficiency heat pump freeze cycle.
The 6th scheme is specially, and in each scheme of the 1st~5, the coupled position of the 1st bypass circulation and the pipeline between the outdoor heat converter are provided with check-valves, and above-mentioned check-valves is along the flow direction setting of cryogen flow to the suction inlet of above-mentioned compressor.By forming such formation, can prevent in the refrigerant inflow outdoor heat exchanger, realize that high efficiency refrigerant heats/heats.
The 7th scheme specifically is, in each scheme of the 1st~6, the coupled position of the suction side of the 1st bypass circulation and compressor connects more than 4 times with the suction caliber of above-mentioned compressor.By forming such structure, can make refrigerant can rapid state variation not take place, thereby can make compressor realize stable operation in the suction side of compressor, improve the operating reliability of compressor.
The 8th scheme is specially, and comprises in the refrigerant heater described in each scheme of the 1st~7: heater element, the pipeline that flows through for refrigerant and the accumulation of heat part that above-mentioned heater section and refrigerant pipeline parcel is formed with heat-storing material.By forming such formation, can make the refrigerant heater realize miniaturization, can be installed in the interior space of existing off-premises station machine.Therefore, can produce good effect aspect, simplified structure shared, the reduction cost with other machine realization off-premises station.
Description of drawings
Fig. 1 is the pie graph of the air-conditioner in the embodiment of the invention 1,
Fig. 2 is the pie graph of the air-conditioner in the embodiment of the invention 2,
Fig. 3 is the pie graph of the air-conditioner in the embodiment of the invention 3,
Fig. 4 is the control block diagram among the present invention,
Fig. 5 is the time sequential routine figure in the embodiment of the invention 1,
Fig. 6 is the pie graph of existing air-conditioner.
In the above-mentioned accompanying drawing, 1 is compressor, and 2 is cross valve, and 3 is indoor heat converter, 4 is pressure reducer, and 5 is outdoor heat converter, and 6 is the 1st bypass circulation, and 7 are refrigerant heating two-way valve, 8 is heater, and 9 is the 2nd bypass circulation, and 10 is the defrosting two-way valve, and 11 is the defrosting pressure reducer, 12 use pressure reducer for refrigerant heating, and 13 be heater element, and 14 is the pipeline that confession refrigerant flows through, 15 is heat storage unit, and 16 is check-valves, and 17 is indoor fan, 18 is indoor set, and 19 is outdoor fan, and 20 is off-premises station.
The specific embodiment
Come with reference to the accompanying drawings some embodiments of the invention are elaborated.Need to prove that such embodiment does not limit effect of the present invention.
(embodiment 1)
Fig. 1 is the pie graph of the air-conditioner among the present invention.In Fig. 1, be provided with in the off-premises station 20: compressor 1, cross valve 2, pressure reducer 4, outdoor heat converter the 5, the 1st bypass circulation 6, refrigerant heating are passed through pipe portion 14, heat storage unit 15, check-valves 16 and outdoor fan 19 with two-way valve 12, refrigerant heater element 13, the refrigerant of two-way valve the 11, the 1st bypass circulation of two-way valve 7, refrigerant heater the 8, the 2nd bypass circulation 9, defrosting two-way valve the 10, the 2nd bypass circulation.Be provided with indoor heat converter 3 and indoor fan 17 in the indoor set 18.The pressure reducer 4 here can be an electromagnetic expanding valve.
The control system block diagram of the embodiment of the invention 1 has been shown, the working timing figure when Fig. 5 operates for this control system among Fig. 4.Among Fig. 4, begin judgment means 50 by the defrosting of outdoor pusher side and judge whether defrost operation should begin.When judging that defrost operation should begin, compressor operation device 51, refrigerant heating are carried out defrost operation with two-way valve opening and closing device 52, defrosting two-way valve opening and closing device 53, expansion valve opening modifier 54, outdoor fan operating means 55, cross valve switching device shifter 56, heater operation/arresting stop such work as shown in Figure 5.
When the defrosting commencing signal receiving system 58 in the indoor set 18 receives defrosting during commencing signal from off-premises station 20, control by 59 pairs of indoor fans 17 of indoor fan operating means according to the judged result of defrost operation.
As shown in Figure 5, when judging the defrosting beginning, promptly from step 1 by heat pump carry out heat operation change over to the step 2 by heating in the operation that the refrigerant heating operation carries out.At this moment, the refrigerant heating is energized with two-way valve, is controlled at and opens on the direction.
In addition, heater is energized, and carries out the refrigerant heating operation.At this moment, expansion valve cuts out or is similar to the operation of cutting out.
In addition, outdoor fan enters the halted state in the defrost process.Owing to will proceed to heat operation, cross valve maintains the state that heats the loop, does not switch in defrost process.
In addition, owing to will proceed to heat, indoor fan does not stop yet.
Next,, make the energising of defrosting two-way valve, be controlled to and open direction to defrost in step 3.In addition, compressor operating is under the defrosting operating frequency.
Next, finish defrost operation, turn back to the preceding mode of operation of defrosting simultaneously in step 4.
At last, after step 5, recover normal heat pump and heat operation.
Though the operating frequency of the compressor among the embodiment 1 can change,, even use the compressor of fixed speed, on one side also can proceed to heat, Yi Bian carry out defrost operation.
(embodiment 2)
Next, by Fig. 2 embodiments of the invention 2 are described.
In the present embodiment and the difference between the embodiment 1 be: use the two-way valve 4a do not have decompression, only to carry out the opening and closing operations of refrigerant to constitute pressure reducer 4.Under such occasion, while also can proceed to heat to defrost.
The operational circumstances of two-way valve 4a is as follows.Refrigerant heating be controlled so as to two-way valve 7 open in or a little a little later the time, two-way valve 4a is closed valve controls.
(embodiment 3)
Below by Fig. 3 embodiment 3 is described.
In the present embodiment and the difference of embodiment 1 be: refrigerant heating is not with being provided with pressure reducer between two-way valve 7 and the heater 8, but is provided with pressure reducer 12 between indoor heat converter 3 and pressure reducer 4.
After adopting such setting, the 1st bypass circulation 6 is simplified, thereby can be reduced body volume, reduce manufacturing cost.
In addition, the suction side of compressor 1 is provided with gas-liquid separator 21.
Because of the specification difference of compressor 1, the compressor 1 that has for the degree of bearing of returning liquid a little less than.Under such occasion, such gas-liquid separator 21 need be set.
Particularly, time liquid is more in the defrost operation process, thereby needs consider back the influence of liquid to compressor reliability.
In addition, constitute the pressure reducer of the 2nd bypass circulation 9, can change the defrost cycle amount according to long-pending frost amount with electromagnetic expanding valve 22.
In addition, in the freezing loop of such heat-pump-type,, need connect gas-liquid separator in the suction side of compressor under some occasion because of the specification difference of compressor.
In addition, even if compressor adopts the compressor of volume-variable mode, also can reach identical effect, so only used " compressor " this title here.
Electromagnetic expanding valve both can adopt the variable mechanism of aperture, also can use the such and incomplete device that blocks flow and just partial cross section is carried out throttling of two-way valve.
In addition, for the coupled position of defrosting two-way valve, both can be positioned at compressor with the position of joining pressure reducer of the 2nd bypass circulation or electromagnetic expanding valve and discharge side, also can be positioned at outdoor heat converter one side, and which side be arranged on all be fine.
If possible, pressure reducer, expansion valve are preferably disposed near on the position of outdoor heat converter.Like this, can reduce the liquid cryogen that stockpiles in bypass circulation when refrigerating operation, amount of refrigerant can be reduced, stockpiling also of lubricating oil will reduce.
When being located at pressure reducer between refrigerant heater and the indoor heat converter when being arranged on refrigerant heater one side, just in the defrost operation process, just carry out throttling.
In addition, when pressure reducer is arranged on indoor heat converter one side in the basic heat pump circuit, will become the pressure reducer that operation makes a difference to refrigerating/heating.If such pressure reducer is selected the device that has the special-purpose throttle structure of defrosting for use, the advantage that the refrigerant heater need not to increase new throttle mechanism will be produced.
In addition, carry out the mechanism that refrigerant carries out throttling, defrost performance is not had too much influence yet, therefore, can select the device that only the part area is carried out throttling for use even between the coupled position of the 2nd bypass circulation and outdoor heat converter, be provided with.
Heating part in the refrigerant heater so long as heater members just can, and no matter its shape, mode of heating how.
In sum, while the air-conditioner among the present invention is implemented defrost operation owing to can heat operation, therefore can also use as air-conditioner at the low-down refrigerant latitudes of outdoor temperature.

Claims (8)

1. air-conditioner is characterized in that comprising:
Compressor, cross valve, indoor heat converter, pressure reducer, outdoor heat converter are connected the freezing loop of the heat-pump-type that forms by cryogen circuit;
Will with pipeline between joining described indoor heat converter of this freezing loop and the described pressure reducer, the 1st bypass circulation that connected with pipeline between cross valve and the outdoor heat converter, described the 1st bypass circulation is provided with two-way valve and refrigerant heater; With
Described cross valve that will connect with described freezing loop and the pipeline between the pipeline between the described indoor heat converter and described pressure reducer and the described outdoor heat converter are connected, the 2nd bypass circulation that described compressor that perhaps will connect with described freezing loop and the pipeline between the pipeline between the described cross valve and described pressure reducer and the described outdoor heat converter are connected, described the 2nd bypass circulation is provided with two-way valve
Wherein, when described outdoor heat converter is defrosted, make two-way valve on described the 1st bypass circulation open, make refrigerant after the heating of refrigerant heater flow into the 1st bypass operation of the suction side of described compressor; With make two-way valve on described the 2nd bypass circulation open, make the 2nd bypass operation of refrigerant by described outdoor heat converter.
2. the air-conditioner described in claim 1, it is characterized in that: described pressure reducer is an electromagnetic expanding valve, the coupled position of an end in freezing loop separately of the 1st bypass circulation and the 2nd bypass circulation is positioned at the forward and backward of described expansion valve, closes the throttle operation of valve or approaching sealing when defrost operation.
3. the air-conditioner described in claim 1, it is characterized in that: described pressure reducer is a two-way valve, the 1st bypass circulation and the 2nd bypass circulation coupled position of an end in freezing loop separately is positioned at the front and back of described two-way valve, makes described two-way valve close the valve operation when defrost operation.
4. the air-conditioner described in each of claim 1~3 is characterized in that: be connected with pressure reducer or electromagnetic expanding valve on the 2nd bypass circulation, can adjust the flow of refrigerant.
5. the air-conditioner described in each of claim 1~4 is characterized in that: be provided with pressure reducer between described refrigerant heater and indoor heat converter, make described refrigerant heater play the effect of evaporimeter.
6. the air-conditioner described in each of claim 1~5, it is characterized in that: be provided with check-valves between the 1st bypass circulation and outdoor heat converter, described check-valves is along the flow direction setting of cryogen flow to the suction inlet of described compressor.
7. the air-conditioner described in each of claim 1~6, it is characterized in that: the coupled position of the suction side of the 1st bypass circulation and compressor connects with the caliber more than 4 times or 4 times of the suction caliber of described compressor.
8. the air-conditioner described in each of claim 1~7 is characterized in that comprising in the described refrigerant heater: heater element, the pipeline that flows through for refrigerant and with heat-storing material with described heater element and the accumulation of heat part that forms for the pipeline parcel that refrigerant flows through.
CNB2005101140359A 2004-11-02 2005-10-19 Air conditioner Expired - Fee Related CN100353130C (en)

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Application Number Priority Date Filing Date Title
JP2004318985A JP2006132797A (en) 2004-11-02 2004-11-02 Air conditioner
JP2004318985 2004-11-02

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Publication Number Publication Date
CN1769819A true CN1769819A (en) 2006-05-10
CN100353130C CN100353130C (en) 2007-12-05

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CN (1) CN100353130C (en)
NO (1) NO20054511L (en)
SE (1) SE531333C2 (en)

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CN103154644A (en) * 2010-10-01 2013-06-12 松下电器产业株式会社 Refrigeration cycle device
CN103383157A (en) * 2013-06-28 2013-11-06 广东美的电器股份有限公司 Heat pump air-conditioning system and control method thereof
CN103383157B (en) * 2013-06-28 2016-01-13 美的集团股份有限公司 Heat pump type air conditioning system and control method thereof
CN104567073A (en) * 2013-10-28 2015-04-29 珠海格力电器股份有限公司 Air conditioning cycle system
CN104567076A (en) * 2013-10-28 2015-04-29 珠海格力电器股份有限公司 Air conditioning cycle device and control method thereof
CN104697253A (en) * 2013-12-06 2015-06-10 财团法人工业技术研究院 Apparatus with dehumidification and defrosting abilities and controlling method thereof
WO2019029233A1 (en) * 2017-08-08 2019-02-14 格力电器(武汉)有限公司 Air conditioning system and air conditioner having the same

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JP2006132797A (en) 2006-05-25

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