CN205137703U - Air -conditioner - Google Patents

Air -conditioner Download PDF

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Publication number
CN205137703U
CN205137703U CN201520921444.9U CN201520921444U CN205137703U CN 205137703 U CN205137703 U CN 205137703U CN 201520921444 U CN201520921444 U CN 201520921444U CN 205137703 U CN205137703 U CN 205137703U
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CN
China
Prior art keywords
heat exchanger
valve
conditioner
air
heater
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.)
Expired - Fee Related
Application number
CN201520921444.9U
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Chinese (zh)
Inventor
王新利
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
Guangdong Midea HVAC Equipment 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
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Priority to CN201520921444.9U priority Critical patent/CN205137703U/en
Application granted granted Critical
Publication of CN205137703U publication Critical patent/CN205137703U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses an air -conditioner, this air -conditioner include compressor, cross valve, indoor heat exchanger, a throttling element and the outdoor heat exchanger refrigerant circuit that heats through tube coupling formation, air -conditioner still includes: first solenoid valve, the second port of cross valve is connected with first solenoid valve and indoor heat exchanger respectively, and the other end of first solenoid valve is connected between the fourth port of stating the outdoor heat exchanger cross valve, heating device, heating device connect between the third port and compressor of cross valve, and the second solenoid valve, the second solenoid valve is connected between the third port and heating device of cross valve, the refrigerant compressor that circulates back behind first solenoid valve, outdoor heat exchanger, a throttling element, the heating device of flowing through in proper order forms the supplementary heat transfer return circuit of being used for frost. The utility model discloses can guarantee indoor temperature's when air -conditioner heats the mode stability.

Description

Air-conditioner
Technical field
The utility model relates to air-conditioning technique field, particularly a kind of air-conditioner and air-conditioner thereof.
Background technology
Air-conditioner is easy frosting on outdoor heat exchanger in heating operations, along with the increase of frosting degree, can reduce the heating capacity of air-conditioner gradually, therefore must defrost to outdoor heat exchanger in air-conditioner running.
In prior art, the mode generally commutated by cross valve is defrosted, and namely when defrosting, air-conditioner is kind of refrigeration cycle by heating cyclic switching, and indoor heat exchanger switches to evaporimeter by condenser, and by switching to the state of absorbing heat indoor to indoor heat release.The defect of prior art is, when defrosting, because indoor heat exchanger absorbs heat indoor, therefore easily causing indoor temperature obviously to decline, have impact on comfortableness when user's using air-condition heats.
Utility model content
Main purpose of the present utility model is to provide a kind of air-conditioner, the stability of indoor temperature when being intended to ensure that air-conditioner is in heating mode.
For achieving the above object, the air-conditioner that the utility model proposes, what comprise that compressor, cross valve, indoor heat exchanger, first throttle element and outdoor heat exchanger be connected to form by pipeline heats refrigerant loop, described air-conditioner also comprises: the first magnetic valve, second port of described cross valve is connected with described first magnetic valve and described indoor heat exchanger respectively, between the 4th port stating cross valve described in outdoor heat exchanger described in the other end of described first magnetic valve is connected to; Heater, described heater is connected between the 3rd port of described cross valve and described compressor; And second magnetic valve, described second magnetic valve is connected between the 3rd port of described cross valve and described heater; Refrigerant flows through described first magnetic valve successively, described outdoor heat exchanger, described first throttle element, described heater Posterior circle return described compressor, forms the auxiliary heat-exchanging loop in order to defrost.
Preferably, described air-conditioner also comprises second section fluid element, and one end of described second section fluid element is connected between described first throttle element and described indoor heat exchanger, the other end is connected between described second magnetic valve and described heater.
Preferably, described air-conditioner also comprises controlling described auxiliary heat-exchanging loop and the described controller heating refrigerant loop switch, and described controller is electrically connected with described first magnetic valve, described second magnetic valve and described second section fluid element.
Preferably, the stream that described cross valve flows to described second section fluid element through described indoor heat exchanger is first flow path, the stream that described cross valve flows to described second section fluid element through described outdoor heat exchanger and described first throttle element is the second stream, and described first flow path is in parallel with described second stream; Described controller controls described first magnetic valve to be ended with the conducting of described second section fluid element and described second magnetic valve, refrigerant loops back described compressor through described heater after flowing through described first flow path and described second stream respectively, to form described auxiliary heat-exchanging loop.
Preferably, described controller controls described first magnetic valve and described second section fluid element ends and described second solenoid valve conduction, refrigerant flows through described indoor heat exchanger successively, described first throttle element, described outdoor heat exchanger, described cross valve Posterior circle return described compressor, described in being formed, heat refrigerant loop.
Preferably, described heater is electric auxiliary thermal.
Preferably, described heater comprises supplementary heat exchanger, the water tank be connected with described supplementary heat exchanger and circulating pump, be provided with heating part in described water tank, described circulating pump provides power, to make described supplementary heat exchanger heat exchange for the water circulation between described water tank and described supplementary heat exchanger.
Preferably, the water inlet end of described water tank and water side are equipped with temperature temperature-sensitive bag.
Preferably, described air-conditioner also comprises the oil eliminator be arranged between described compressor and described cross valve and the gas-liquid separator be arranged between described heater and described compressor.
The utility model also proposes a kind of air-conditioner, comprise air-conditioner, what described air-conditioner comprised that compressor, cross valve, indoor heat exchanger, first throttle element and outdoor heat exchanger be connected to form by pipeline heats refrigerant loop, described air-conditioner also comprises: the first magnetic valve, and one end of described first magnetic valve is connected between described cross valve and described indoor heat exchanger, the other end is connected between described outdoor heat exchanger and described cross valve; Heater, one end of described heater is connected between described first throttle element and described indoor heat exchanger, the other end is connected between described cross valve and described compressor; And second magnetic valve, one end of described second magnetic valve is connected with described cross valve, the other end is connected with described heater; Refrigerant flows through described first magnetic valve successively, described outdoor heat exchanger, described first throttle element, described heater Posterior circle return described compressor, forms the auxiliary heat-exchanging loop in order to defrost.
The utility model, by arranging auxiliary heat-exchanging loop, makes indoor heat exchanger while outdoor heat exchanger defrost keep heating mode, thus avoids fluctuations in indoor temperature excessive.Meanwhile, the refrigerant of the HTHP exported by compressor air-discharging end can be directly used in the defrost of outdoor heat exchanger, does not need through indoor heat exchanger, thus realizes defrost rapidly and efficiently.This heater can also when low-temperature heating auxiliary heating, thus add suction temperature and the back pressure of compressor, and then the delivery temperature of compressor and pressure at expulsion raised, play Fast Heating refrigerant, effect that indoor heat exchanger heats fast.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, the structure according to these accompanying drawings can also obtain other accompanying drawing.
Fig. 1 is the structural representation of the utility model air-conditioner one embodiment;
Fig. 2 is the flow chart of the kind of refrigeration cycle of air-conditioner in Fig. 1;
Fig. 3 is the flow chart heating circulation of air-conditioner in Fig. 1;
Fig. 4 is the structural representation of another embodiment of the utility model air-conditioner;
Fig. 5 is the structural representation of heater in Fig. 2;
Fig. 6 is the schematic flow sheet of the utility model defrosting method one embodiment.
Drawing reference numeral illustrates:
Label Title Label Title
10 Compressor 20 Cross valve
30 Indoor heat exchanger 40 First throttle element
50 Outdoor heat exchanger 60 First magnetic valve
70 Heater 71 Supplementary heat exchanger
72 Water tank 721 Heating part
73 Circulating pump 74 Temperature temperature-sensitive bag
80 Second magnetic valve 90 Second section fluid element
100 Oil eliminator 110 Gas-liquid separator
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Need explanation, all directionality instruction (such as up, down, left, right, before and afters in the utility model embodiment ...) only for explaining the relative position relation, motion conditions etc. under a certain particular pose (as shown in drawings) between each parts, if when this particular pose changes, then directionality instruction also correspondingly changes thereupon.
In addition, in the utility model, relate to the description of " first ", " second " etc. only for describing object, and instruction can not be interpreted as or imply its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In addition; technical scheme between each embodiment can be combined with each other; but must be can be embodied as basis with those of ordinary skill in the art; when technical scheme combination occur conflicting maybe cannot realize time people should think that the combination of this technical scheme does not exist, also not the utility model require protection domain within.
The utility model proposes a kind of air-conditioner, is the structural representation of the utility model air-conditioner one embodiment with reference to figure 1, Fig. 1.
In the utility model embodiment, this air-conditioner comprises air-conditioner, what air-conditioner comprised that compressor 10, cross valve 20, indoor heat exchanger 30, first throttle element 40 and outdoor heat exchanger 50 be connected to form by pipeline heats refrigerant loop, air-conditioner also comprises: the first magnetic valve, second port of cross valve is connected with the first magnetic valve and indoor heat exchanger respectively, the other end of the first magnetic valve be connected to state outdoor heat exchanger cross valve the 4th port between; Heater, heater is connected to the 3rd of cross valve the between port and compressor; And second magnetic valve, the second magnetic valve is connected to the 3rd of cross valve the between port and heater; Refrigerant flows through the first magnetic valve successively, outdoor heat exchanger, first throttle element, heater Posterior circle return compressor, forms the auxiliary heat-exchanging loop in order to defrost.
Particularly, one end of the first magnetic valve 60 is communicated with the connecting line between cross valve 20 with indoor heat exchanger 30 by refrigerant pipeline, the other end is communicated with the connecting line between outdoor heat exchanger 50 with cross valve 20 by refrigerant pipeline.One end of heater 70 is communicated with the connecting line between first throttle element 40 with indoor heat exchanger 30 by refrigerant pipeline, the other end is communicated with the connecting line between cross valve 20 with compressor 10 by refrigerant pipeline.One end of second magnetic valve 80 is connected with cross valve 20, the other end is connected with heater 70.
With reference to the direction of arrow in figure 2, Fig. 2 be air-conditioner be in refrigeration mode time refrigerant flow direction.When air-conditioner freezes, the gaseous coolant of the HTHP that compressor 10 exports flows to outdoor heat exchanger 50 by cross valve 20, first throttle element 40 is entered after condensation heat release, again through the reducing pressure by regulating flow of first throttle element 40 laggard enter indoor heat exchanger 30, got back to the muffler of compressor 10 after carrying out refrigeration heat absorption again by cross valve 20, so far complete kind of refrigeration cycle.With reference to the direction of arrow in figure 3, Fig. 3 be air-conditioner be in heating mode time refrigerant flow direction.When air conditioner heat-production, after the exhaust of compressor 10 switching by cross valve 20, flow to indoor heat exchanger 30, after condensation heat release by first throttle element 40 laggard enter outdoor heat exchanger 50 evaporation endothermic; Get back to the muffler of compressor 10 finally by cross valve 20, complete and heat circulation.
From kind of refrigeration cycle and the kind of refrigeration cycle flow process of above-mentioned air-conditioning system, when heating mode, refrigerant is evaporation endothermic when outdoor heat exchanger 50, but, when air-conditioner is in heating mode, general outdoor temperature is lower, easily causes the surperficial frosting of outdoor heat exchanger 50.In order to ensure the normal operation of air-conditioner, in prior art, the mode generally commutated by cross valve 20 is defrosted, namely when defrosting, air-conditioner is kind of refrigeration cycle by heating cyclic switching, and during kind of refrigeration cycle, refrigerant condensation heat release when outdoor heat exchanger 50, utilizes this heat to defrost.But indoor heat exchanger 30 can be caused like this to absorb heat indoor, easily cause indoor temperature obviously to decline, have impact on the comfortableness of user.
With reference to the direction of arrow in figure 1, Fig. 1 be air-conditioner be in defrost pattern time refrigerant flow direction.During defrost pattern, shunt the refrigerant that cross valve 20 exports, wherein part refrigerant is directly circulated to outdoor heat exchanger 50 by bypass branch, and refrigerant is now the refrigerant of the HTHP exported by compressor 10 exhaust end, can defrost fast.Wherein, this bypass branch is provided with the first magnetic valve 60, can be controlled the break-make of this stream by this first magnetic valve 60.The stream being flowed to heater 70 by cross valve 20 is provided with the second magnetic valve 80, and this second magnetic valve 80 can control the break-make of this stream, thus when making defrost pattern outdoor heat exchanger 50 as condenser.Certainly, this second magnetic valve 80 can also be arranged between outdoor heat exchanger 50 and cross valve 20.The utility model, by arranging auxiliary heat-exchanging loop, makes indoor heat exchanger 30 while outdoor heat exchanger 50 defrost keep heating mode, thus avoids fluctuations in indoor temperature excessive.
Preferably, heater 70 is electric auxiliary thermal.The auxiliary thermal of electricity can provide stable heat, and the heat efficient quick provided, can regulate as required, can be widely used in the air-conditioner of different capacity.
Preferably, heater 70 in the utility model can also when low-temperature heating auxiliary heating, thus add suction temperature and the back pressure of compressor 10, and then the delivery temperature of compressor 10 and pressure at expulsion are raised, play Fast Heating refrigerant, effect that indoor heat exchanger 30 heats fast.
Further, air-conditioner also comprises second section fluid element 90, and one end of second section fluid element 90 is connected between first throttle element 40 and indoor heat exchanger 30, the other end is connected between the second magnetic valve 80 and heater 70.
Particularly, second section fluid element 90 pairs of refrigerants carry out reducing pressure by regulating flow, make the refrigerant entering heater 70 be low pressure refrigerant, refrigerant heat exchange efficiency when heater 70 can be made higher, and play protection heater 70.This second section fluid element 90 can be set to electric expansion valve, one-way throttle valve, bidirectional throttling valve etc., and the utility model does not limit for its concrete structure.
Further, air-conditioner also comprises controlling auxiliary heat-exchanging loop and the controller heating refrigerant loop switch, and controller is electrically connected with the first magnetic valve 60, second magnetic valve 80 and second section fluid element 90.
Particularly, the stream that cross valve 20 flows to second section fluid element 90 through indoor heat exchanger 30 is first flow path, the stream that cross valve 20 flows to second section fluid element 90 through outdoor heat exchanger 50 and first throttle element 40 is the second stream, and first flow path is in parallel with the second stream.When heating mode, controller controls the first magnetic valve 60 to be ended and the second magnetic valve 80 conducting with second section fluid element 90, refrigerant flows through indoor heat exchanger 30 successively, first throttle element 40, outdoor heat exchanger 50, cross valve 20 Posterior circle return compressor 10, heats refrigerant loop to be formed.When being in heating mode, controller controls heater 70 and quits work, thus is conducive to economizing on resources.Certainly, when refrigeration mode, controller controls the first magnetic valve 60 equally to be ended and the second magnetic valve 80 conducting with second section fluid element 90, and now the flow direction of refrigerant is contrary with heating mode.
When defrost pattern, controller controls the first magnetic valve 60 to be ended with second section fluid element 90 conducting and the second magnetic valve 80, and refrigerant loops back compressor 10 through heater 70 after flowing through first flow path and the second stream respectively, to form auxiliary heat-exchanging loop.
Further, air-conditioner also comprises the oil eliminator 100 be arranged between compressor 10 and cross valve 20 and the gas-liquid separator 110 be arranged between heater 70 and compressor 10.
Particularly, the lubricating oil of compressor 10 is understood some and is discharged into high-pressure chamber along with the acting of compressor 10 and enters high-voltage tube, and this part lubricating oil will be expelled in coolant circulating system from compressor 10.In order to ensure that air-conditioner runs safely and efficiently, in the present embodiment, be connected with oil eliminator 100 at the exhaust end of compressor 10.Meanwhile, gas-liquid separator 110 is arranged at the inlet end of compressor 10, liquid refrigerants can be separated with gaseous coolant, prevent not having the liquid evaporated directly enter compressor 10 and cause liquid hit phenomenon.
With reference to the structural representation that figure 4 and Fig. 5, Fig. 4 are another embodiment of the utility model air-conditioner, Fig. 5 is the structural representation of heater 70 in Fig. 4.
Further, heater 70 comprises supplementary heat exchanger 71, the water tank 72 be connected with supplementary heat exchanger 71 and circulating pump 73, be provided with heating part 721 in water tank 72, circulating pump 73 provides power, to make supplementary heat exchanger 71 heat exchange for the water circulation between water tank 72 and supplementary heat exchanger 71.
Particularly, heater 70 is supplementary heat exchanger 71 in the present embodiment, and this supplementary heat exchanger 71 can be plate heat exchange of heat pipe or double-tube heat exchanger, and it realizes heating by hot water circuit subsystem.This hot water circuit subsystem comprises water tank 72 and circulating pump 73, is wherein provided with heating part 721 in water tank 72, and the water in water tank 72 is heated to be hot water by this heating part 721.Hot water is circulated to supplementary heat exchanger 71 by circulating pump 73, makes to raise through the refrigerant temperature of supplementary heat exchanger 71 by heat exchange, and namely refrigerant absorbs the heat from supplementary heat exchanger 71 and evaporates.In the present embodiment, by arranging supplementary heat exchanger 71 and hot water circuit subsystem, the heat exchange area of refrigerant and heater 70 can be increased, and uniformity and the stationarity of heat exchange can be improved by hot water heat exchange, thus improve heat exchange efficiency.
Preferably, the water inlet end of water tank 72 and water side are equipped with temperature temperature-sensitive bag 74.In the present embodiment, controller is also electrically connected with this hot water circuit subsystem, may be used for controlling its duty.Temperature difference before the temperature temperature-sensitive bag 74 be arranged at can detect hot water heat exchange and after heat exchange, controller can regulate the state of working of hot water circuit subsystem by this temperature difference.Such as control the discharge entering supplementary heat exchanger 71, control the operating power etc. of heating part 721 in water tank 72, the heat exchange efficiency of supplementary heat exchanger 71 can be regulated, thus make the temperature of refrigerant in the circulatory system more stable.
The utility model also proposes a kind of defrosting method being applied to above-mentioned air-conditioner, with reference to figure 1 be the schematic flow sheet of the utility model defrosting method one embodiment with reference to figure 6, Fig. 6.This defrosting method comprises the following steps:
S1: heating mode runs.
S2: judge whether to reach defrost condition.
Can at the surperficial set temperature sensor of outdoor heat exchanger 50 in the present embodiment, and this sensor is electrically connected with controller, by the temperature information of real-time outdoor heat exchanger 50, this temperature information is fed back to controller, according to the temperature information received, controller judges whether that reaching defrost regulates.Such as when the temperature monitoring outdoor heat exchanger 50 surface is less than five degrees below zero, defrost pattern can be entered, in like manner, exit defrost pattern when the temperature of outdoor heat exchanger 50 reaches certain value.Certain controller can also determine the operating power of heater 70 according to temperature, thus controls defrost intensity or time.
S3: defrost mode operation.
When controller judges to reach defrost condition, controller controls the first magnetic valve 60 to be ended with second section fluid element 90 conducting and the second magnetic valve 80, and now air-conditioner enters defrost pattern.Meanwhile, controller control heater 70 works, for the refrigerant of process provides thermal source.
Preferably, when controller judges to reach defrost condition, controller controls heater 70 and shifts to an earlier date certain hour unlatching, to carry out preheating, thus prevents strong colding and heat succeed each other from occurring compressor 10 fault.
S4: judge whether to reach the condition exiting defrost pattern.
When controller judge reach exit defrost condition time, controller controls the first magnetic valve 60 to be ended and the second magnetic valve 80 conducting with second section fluid element 90, refrigerant flows through indoor heat exchanger 30 successively, first throttle element 40, outdoor heat exchanger 50, cross valve 20 Posterior circle return compressor 10, to switch back heating mode.
Preferably, at the surperficial set temperature sensor of heater 70, when detecting that temperature is too high, controller controls heater 70 and quits work, thus plays protection heater 70.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every under inventive concept of the present utility model; utilize the equivalent structure transformation that the utility model description and accompanying drawing content are done, or directly/be indirectly used in other relevant technical fields to include in scope of patent protection of the present utility model.

Claims (9)

1. an air-conditioner, what comprise that compressor, cross valve, indoor heat exchanger, first throttle element and outdoor heat exchanger be connected to form by pipeline heats refrigerant loop, and it is characterized in that, described air-conditioner also comprises:
First magnetic valve, the second port of described cross valve is connected with described first magnetic valve and described indoor heat exchanger respectively, and the other end of described first magnetic valve is connected between the 4th port of cross valve described in described outdoor heat exchanger;
Heater, described heater is connected between the 3rd port of described cross valve and described compressor; And
Second magnetic valve, described second magnetic valve is connected between the 3rd port of described cross valve and described heater;
Refrigerant flows through described first magnetic valve successively, described outdoor heat exchanger, described first throttle element, described heater Posterior circle return described compressor, forms the auxiliary heat-exchanging loop in order to defrost.
2. air-conditioner as claimed in claim 1, it is characterized in that, also comprise second section fluid element, one end of described second section fluid element is connected between described first throttle element and described indoor heat exchanger, the other end is connected between described second magnetic valve and described heater.
3. air-conditioner as claimed in claim 2, it is characterized in that, also comprise controlling described auxiliary heat-exchanging loop and the described controller heating refrigerant loop switch, described controller is electrically connected with described first magnetic valve, described second magnetic valve and described second section fluid element.
4. air-conditioner as claimed in claim 3, it is characterized in that, the stream that described cross valve flows to described second section fluid element through described indoor heat exchanger is first flow path, the stream that described cross valve flows to described second section fluid element through described outdoor heat exchanger and described first throttle element is the second stream, and described first flow path is in parallel with described second stream;
Described controller controls described first magnetic valve to be ended with the conducting of described second section fluid element and described second magnetic valve, refrigerant loops back described compressor through described heater after flowing through described first flow path and described second stream respectively, to form described auxiliary heat-exchanging loop.
5. air-conditioner as claimed in claim 3, it is characterized in that, described controller controls described first magnetic valve and described second section fluid element ends and described second solenoid valve conduction, refrigerant flows through described indoor heat exchanger successively, described first throttle element, described outdoor heat exchanger, described cross valve Posterior circle return described compressor, described in being formed, heat refrigerant loop.
6. air-conditioner as claimed in claim 1, it is characterized in that, described heater is electric auxiliary thermal.
7. air-conditioner as claimed in claim 1, it is characterized in that, described heater comprises supplementary heat exchanger, the water tank be connected with described supplementary heat exchanger and circulating pump, be provided with heating part in described water tank, described circulating pump provides power, to make described supplementary heat exchanger heat exchange for the water circulation between described water tank and described supplementary heat exchanger.
8. air-conditioner as claimed in claim 7, it is characterized in that, the water inlet end of described water tank and water side are equipped with temperature temperature-sensitive bag.
9. air-conditioner as claimed in any of claims 1 to 8 in one of claims, is characterized in that, also comprise the oil eliminator be arranged between described compressor and described cross valve and the gas-liquid separator be arranged between described heater and described compressor.
CN201520921444.9U 2015-11-17 2015-11-17 Air -conditioner Expired - Fee Related CN205137703U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520921444.9U CN205137703U (en) 2015-11-17 2015-11-17 Air -conditioner

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Application Number Priority Date Filing Date Title
CN201520921444.9U CN205137703U (en) 2015-11-17 2015-11-17 Air -conditioner

Publications (1)

Publication Number Publication Date
CN205137703U true CN205137703U (en) 2016-04-06

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CN201520921444.9U Expired - Fee Related CN205137703U (en) 2015-11-17 2015-11-17 Air -conditioner

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109029942A (en) * 2018-06-21 2018-12-18 中广核研究院有限公司 Single loop non-return valve action test set

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109029942A (en) * 2018-06-21 2018-12-18 中广核研究院有限公司 Single loop non-return valve action test set

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160406

Termination date: 20191117

CF01 Termination of patent right due to non-payment of annual fee