CN203132194U - Air conditioning system - Google Patents
Air conditioning system Download PDFInfo
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- CN203132194U CN203132194U CN201320105790.0U CN201320105790U CN203132194U CN 203132194 U CN203132194 U CN 203132194U CN 201320105790 U CN201320105790 U CN 201320105790U CN 203132194 U CN203132194 U CN 203132194U
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- condenser
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Abstract
The utility model discloses an air conditioning system. The air conditioning system comprises a compressor, a condenser, an evaporator, a throttling mechanism, a condenser bypass pipeline, a low-temperature starting module and a controller, wherein the controller is connected with the compressor and used for controlling the compressor, an inlet of the condenser is connected with an air outlet of the compressor, an outlet of the evaporator is connected with an air inlet of the compressor, an outlet of the throttling mechanism is connected with an inlet of the evaporator, a first end of the condenser bypass pipeline is communicated with the inlet of the condenser, a second end of the condenser bypass pipeline is communicated with an outlet of the condenser, the low-temperature starting module comprises a liquid storage tank and a valve, the liquid storage tank is connected with an inlet of the throttling mechanism and the outlet of the condenser, and the valve is arranged on the condenser bypass pipeline. The air conditioning system can be started and operated reliably at the low environmental temperature, so that the application range of the air conditioning system is greatly expanded.
Description
Technical field
The utility model relates to refrigeration technology field, particularly a kind of air-conditioning system for machine room.
Background technology
In field of air conditioning, precise machine room air conditioner is a kind of air-conditioner that requires the special-purpose series of round-the-clock safe and reliable operation.In the higher area of latitude, its, outside air temperature was very low in winter, and at this moment precise machine room air conditioner still needs to carry out refrigeration demand, and this moment for general refrigerant system design, unit possibly can't start, can not running refrigerating.
In the industry, there is machine room field of air conditioning producer to develop a kind of cold-starting module, though can solve cold-starting and operation problem at present, but its range of application relative narrower can only accomplish to start under-35 ° of situations and operation, when temperature is hanged down again, unit can't start, can not running refrigerating.
The shortcoming that prior art exists is that existing air conditioner in machine room range of application relative narrower for the situation of ultralow temperature, as-40 ℃ of outdoor environment temperatures, can't guarantee that unit can start and reliability service.
The utility model content
The purpose of this utility model is intended to solve at least one of above-mentioned technological deficiency.
For this reason, the utility model proposes a kind of air-conditioning system for machine room, can under low temperature environment, start and reliability service, widened the temperature range of unit operation.
For achieving the above object, the utility model proposes a kind of air-conditioning system, it comprises: compressor; Condenser, the entrance of described condenser links to each other with the exhaust outlet of described compressor; Evaporimeter, the outlet of described evaporimeter links to each other with the air inlet of described compressor; Throttle mechanism, the outlet of described throttle mechanism links to each other with the entrance of described evaporimeter; The condenser bypass pipeline, first end of described condenser bypass pipeline is communicated with the entrance of described condenser, and second end of described condenser bypass pipeline is communicated with the outlet of described condenser; The cold-starting module, described cold-starting module comprises fluid reservoir and valve, and described fluid reservoir links to each other with the entrance of described throttle mechanism and the outlet of described condenser, and described valve is arranged on the condenser bypass pipeline; In order to the controller that described compressor is controlled, described controller is connected with described compressor.
According to the air-conditioning system that the utility model proposes, control is with condenser bypass pipeline connecting system when the pressure of system is lower than the minimum pressure that system arranges, thereby improved the pressure of system, guaranteed that compressor can start at lower outdoor environment temperature, and make unit reliability service under low ambient temperature more, widened its range of application greatly.And, can prolong service life of compressor, avoid compressor damage.
Preferably, described valve is magnetic valve, and second end of described condenser bypass pipeline links to each other with described fluid reservoir.
Perhaps, described valve is magnetic valve, and second end of described condenser bypass pipeline is connected between the outlet of described fluid reservoir and described condenser.
Wherein, described controller is controlled the break-make of described condenser bypass pipeline to described magnetic valve according to the pressure between the entrance of the exhaust outlet of described compressor and described throttle mechanism.
More preferably, described valve is the condensation pressure regulation valve, and described condensation pressure regulation valve comprises three interfaces, first interface of described condensation pressure regulation valve is communicated with the entrance of described condenser, second interface of described condensation pressure regulation valve is communicated with the outlet of described condenser, and the 3rd interface of described condensation pressure regulation valve is communicated with described fluid reservoir.And, described condensation pressure regulation valve controls described first interface at the pressure of described second interface or the 3rd interface during more than or equal to preset value and cuts out, and it is open-minded to control described first interface at the pressure of described second interface or the 3rd interface during less than described preset value.
Wherein, be provided with first check valve between second end of described condenser bypass pipeline and the described fluid reservoir; and the conducting on along second end of described condenser bypass pipeline to the direction of described fluid reservoir of described first check valve, refrigerant migrates to outdoor pusher side when preventing compressor emergency shutdown.
Preferably, be provided with second check valve between the outlet of described condenser and the described fluid reservoir, and described second check valve is along conducting on the direction that exports to described fluid reservoir of described condenser.
Further, also be provided with safety valve on the described fluid reservoir.
Preferably, be provided with filter between described fluid reservoir and the described throttle mechanism, be provided with second magnetic valve between described filter and the described throttle mechanism.
In addition, described air-conditioning system also comprises: the detector that detects the pressure between the entrance of the exhaust outlet of described compressor and described throttle mechanism, described controller links to each other with described detector with described magnetic valve respectively, described controller is controlled described closed electromagnetic valve during more than or equal to preset value at the detected pressure of described detector, and controls described solenoid valve conduction during less than described preset value at the detected pressure of described detector.Wherein, preset value can be the minimum pressure value of system's setting.
The aspect that the utility model is additional and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Description of drawings
Above-mentioned and/or the additional aspect of the utility model and advantage are from obviously and easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is the connection diagram according to each assembly in the air-conditioning system of an embodiment of the utility model;
Fig. 2 is the connection diagram according to each assembly in the air-conditioning system of another embodiment of the utility model; And
Fig. 3 is the connection diagram according to each assembly in the air-conditioning system of another embodiment of the utility model.
Reference numeral:
The specific embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein identical or similar label is represented identical or similar elements or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the utility model, and can not be interpreted as restriction of the present utility model.
Disclosing hereinafter provides many different embodiment or example to be used for realizing different structure of the present utility model.Of the present utility model open in order to simplify, hereinafter parts and the setting to specific examples is described.Certainly, they only are example, and purpose does not lie in restriction the utility model.In addition, the utility model can be in different examples repeat reference numerals and/or letter.This repetition is in order to simplify and purpose clearly, itself not indicate the relation between the various embodiment that discuss of institute and/or the setting.In addition, various specific technology and examples of material that the utility model provides, but those of ordinary skills can recognize the property of can be applicable to of other technologies and/or the use of other materials.In addition, first feature described below second feature it " on " structure can comprise that first and second features form the embodiment of direct contact, can comprise that also additional features is formed on the embodiment between first and second features, such first and second features may not be direct contacts.
In description of the present utility model, need to prove, unless otherwise prescribed and limit, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly to link to each other, and also can link to each other indirectly by intermediary, for the ordinary skill in the art, can understand the concrete implication of above-mentioned term as the case may be.
With reference to following description and accompanying drawing, with these and other aspects of clear embodiment of the present utility model.In these descriptions and accompanying drawing, some specific implementations among the embodiment of the present utility model are specifically disclosed, represent to implement some modes of the principle of embodiment of the present utility model, but should be appreciated that the scope of embodiment of the present utility model is not limited.On the contrary, embodiment of the present utility model comprises spirit and interior all changes, modification and the equivalent of intension scope that falls into institute's additional claims.
The air-conditioning system that is used for machine room that proposes according to the utility model embodiment is described with reference to the accompanying drawings.
As shown in Figure 1, the air-conditioning system of an embodiment proposition of the utility model comprises compressor 1, condenser 2, cold-starting module 200, throttle mechanism 4, evaporimeter 5, condenser bypass pipeline 100 and controller 8.Wherein, cold-starting module 200 comprises valve 6 and fluid reservoir 3.And in this embodiment, valve 6 can be magnetic valve 2000.
Wherein, the entrance of condenser 2 links to each other with the exhaust outlet of compressor 1, and the outlet of evaporimeter 5 links to each other with the air inlet of compressor 1, and the outlet of throttle mechanism 4 links to each other with the entrance of evaporimeter 5, and fluid reservoir 3 links to each other with the entrance of throttle mechanism 4 and the outlet of condenser 2 respectively.
In the present embodiment, as shown in Figure 1, the first end A of condenser bypass pipeline 100 is communicated with the entrance of condenser 2, and the second end B of condenser bypass pipeline 100 is communicated with the outlet of condenser 2, and the second end B of condenser bypass pipeline 100 links to each other with fluid reservoir 3.Wherein, valve 6 is that magnetic valve 2000 is arranged on the condenser bypass pipeline 100.And controller 8 is connected with compressor 1, and controller 8 is in order to control compressor 1.
And, the air-conditioning system of present embodiment also comprises detector 7, detector 7 is the pressure of air-conditioning system for detection of the pressure between the entrance of the exhaust outlet of compressor 1 and throttle mechanism 4, controller 8 links to each other with detector 7 with magnetic valve 2000 respectively, and according to detector 7 detected electromagnetic pressure control valves 2000.Particularly, in embodiment of the present utility model, controller 8 detector 7 detected pressure more than or equal to preset value time control magnetic valve 2000 close, and in control magnetic valve 2000 conductings during less than preset value of detector 7 detected pressure.Wherein, preset value can be the minimum pressure value of system's setting.
That is to say that controller 8 is controlled the break-make of condenser bypass pipeline 100 to magnetic valve 2000 according to the pressure between the entrance of the exhaust outlet of compressor 1 and throttle mechanism 4.
In an embodiment of the present utility model, as shown in Figure 1, be provided with first check valve 10 between the second end B of condenser bypass pipeline 100 and the fluid reservoir 3, and the conducting on along the second end B of condenser bypass pipeline 100 to the direction of fluid reservoir 3 of first check valve 10.
In the present embodiment, as shown in Figure 1, be provided with second check valve 11 between the outlet of condenser 2 and the fluid reservoir 3, and second check valve 11 is along conducting on the direction that exports to fluid reservoir 3 of condenser 2.And fluid reservoir 3 is provided with input adapter, discharge conection and internal thread interface, and safety valve 12 is installed on fluid reservoir 3 internal thread interfaces, and namely speech also is provided with safety valve 12 on the fluid reservoir 3.
It all is that refrigerant migrates to outdoor pusher side when preventing compressor emergency shutdown that first check valve 10 and second check valve 11 wherein are set.
Further, in embodiment of the present utility model, as shown in Figure 1,4 are provided with filter 13 between fluid reservoir 3 and the throttle mechanism, are provided with second magnetic valve 14 between filter 13 and the throttle mechanism 4.Wherein, by filter 13 is set, guarantee the clean free from admixture of fluid by second magnetic valve 14.
In sum, in embodiment of the present utility model, as shown in Figure 1, after magnetic valve 2000 conductings, the circulating direction of fluid is in the above-mentioned air-conditioning system: (1) compressor 1 → condenser 2 → the second check valves 11 → fluid reservoir 3 → filter 13 → the second magnetic valves 14 → throttle mechanism 4 → evaporimeter 5 → compressor; (2) compressor 1 → magnetic valve 2000 → the first check valves 10 → fluid reservoir 3 → the second filters 13 → the second magnetic valves 14 → throttle mechanism 4 → evaporimeter 5 → compressor.
Wherein, first check valve 10, magnetic valve 2000, fluid reservoir 3, second filter 13, second magnetic valve 14 and second check valve 11, safety valve 12 constitute cold-starting module 200.Cold-starting module 200 is when compressor 1 is shut down, effect by second check valve 11, first check valve 10 and magnetic valve 2000, can store some cold-producing mediums in 200 li of cold-starting modules, when compressor 1 is opened, second magnetic valve 14 that is connected on the liquid pipe is opened conducting, cold-producing medium by throttle mechanism 4 for example expansion valve enter evaporimeter 5 and in a disguised form enter compressor 1 for gaseous state; Simultaneously detector 7 high-pressure that detects air-conditioning systems is the pressure between the entrance of the exhaust outlet of compressor 1 and throttle mechanism 4, if high-pressure is lower than preset value, controller 8 control magnetic valves 2000 are opened conducting, 100 conductings of condenser bypass pipeline, the part high pressure-temperature gaseous refrigerant that compressor 1 is discharged is bypassed to fluid reservoir 3, improve fluid reservoir 3 internal pressures rapidly, the low temperature liquid refrigerant mixed that while gaseous refrigerant and fluid reservoir are 3 li, make the temperature, pressure of liquid refrigerant improve, cold-producing medium is got back to evaporimeter 5 fast, thereby compressor 1 is normally started under low temperature condition.Along with pressure gos up, the high-pressure that detects when detector 7 gos up to more than or equal to preset value, and controller 8 control magnetic valves 2000 cut out, and condenser bypass pipeline 100 is closed.In running, if run into the reduction of off-premises station temperature or strong wind interference etc., make condenser 2 heat transmit aggravation, the on high-tension side pressure of air-conditioning system also can reduce, when the pressure that detects the system high pressure side when detector 7 is brought down below preset value, controller 8 control magnetic valves 2000 are opened conducting, the part high pressure-temperature gaseous refrigerant that makes compressor 1 discharge is bypassed to fluid reservoir 3, with the refrigerant mixed in the fluid reservoir 3, improve temperature and the pressure of cold-producing medium, thereby improve the high pressure of system, compressor 1 is normally moved, guarantee the unit reliability service.When detector 7 detected the pressure rise extremely more than or equal to preset value, controller 8 control magnetic valves 2000 cut out.
In another embodiment of the present utility model, as shown in Figure 2, valve 6 also can be magnetic valve 2000, and the second end B of condenser bypass pipeline 100 is connected between the outlet of fluid reservoir 3 and condenser 2.Namely say, after magnetic valve 2000 is opened conducting, the gaseous refrigerant of the part high pressure-temperature that comes out from compressor 1 can also be by first check valve 10, magnetic valve 2000 bypass being exported on the pipeline between the fluid reservoir 3 to condenser 2, with enter fluid reservoir 3 after liquid refrigerant that condenser 2 comes out mixes, temperature, the pressure of fluid reservoir 3 liquid refrigerants are improved, make cold-producing medium get back to evaporimeter 5 fast, thereby compressor 1 is normally started under low temperature condition.Namely the gaseous state of the part high pressure-temperature that comes out from compressor 1 refrigeration can also be exported on the pipeline between the fluid reservoir 3 by first check valve 10, magnetic valve 2000 bypass to condenser 2, therefore do not limit the position of interface, can start and reliability service so that compressor bank is normal equally.Wherein, first check valve 10, magnetic valve 2000, fluid reservoir 3, second filter 13, second magnetic valve 14 and safety valve 12 constitute cold-starting module 200.
In another embodiment of the present utility model, as shown in Figure 3, valve 6 is condensation pressure regulation valve 9, and condensation pressure regulation valve 9 comprises three interfaces, the first interface a of condensation pressure regulation valve 9 is communicated with the entrance of condenser 2, the second interface b of condensation pressure regulation valve 9 is communicated with the outlet of condenser 2, and the 3rd interface c of condensation pressure regulation valve 9 is communicated with fluid reservoir 3.And condensation pressure regulation valve 9 controls the first interface a at the pressure of the second interface b or the 3rd interface c during more than or equal to preset value and cuts out, and it is open-minded to control the first interface a at the pressure of the second interface b or the 3rd interface c during less than preset value.
Wherein, condensation pressure regulation valve 9 is mechanical controling parts; it has three interfaces; the first interface a connects the entrance of condenser 2 by pipeline; the second interface b connects the outlet of condenser 2; the 3rd interface c connects fluid reservoir 3, migrates to condenser in order to prevent the refrigerant in the compressor emergency shutdown fluid reservoir, increases by first check valve 10 between the 3rd interface c and fluid reservoir 3.When unit during at cold-starting, the condensation pressure regulation valve 9 meeting induction second interface b or its detected pressures position differences of the 3rd interface c(different size) pressure, when being lower than when pressure being set being preset value, the first interface a can be open-minded according to pressure condition, the gaseous coolant of by-passing part HTHP, be mixed to fluid reservoir 3 with the supercooled liquid refrigerant from condenser 2, improve refrigerant temperature pressure in the fluid reservoir 3 rapidly, drive refrigerant by throttle mechanism 4, evaporimeter 5, compressor 1 is normally started under outdoor low temperature environment temperature.In the running, along with outdoor environment temperature reduces, condensing pressure also can reduce, when pressure was reduced to the preset value of condensation pressure regulation valve 9, the first interface a can open, the gaseous coolant of by-passing part HTHP, be mixed to fluid reservoir 3 with the supercooled liquid refrigerant from condenser 2, improve refrigerant temperature pressure in the fluid reservoir 3 rapidly, drive refrigerant by throttle mechanism 4, evaporimeter 5, make compressor 1 reliability service in allowed band.When the pressure rise, the first interface a of condensation pressure regulation valve 9 closes in proportion, and until preset value, the first interface a closes fully, has only the second interface b, the 3rd interface c conducting this moment.Wherein, first check valve 10, condensation pressure regulation valve 9, fluid reservoir 3, second filter 13, second magnetic valve 14 and safety valve 12 constitute cold-starting module 200.
Air-conditioning system according to the utility model embodiment, when being lower than the minimum pressure of system's setting, the pressure of system makes the conducting of condenser bypass pipeline, make the gaseous refrigerant and the low temperature liquid refrigerant mixed of coming out from condenser of the part high pressure-temperature that comes out from compressor, thereby improved the temperature and pressure of the cold-producing medium of system high pressure side, guaranteed that compressor can start at lower outdoor environment temperature, and make unit reliability service under low ambient temperature more, satisfy the demand of cold district even extremely cold weather machine room lower air conditioner refrigerating, widened its range of application greatly.And, can prolong service life of compressor, avoid compressor damage.
In the description of this specification, concrete feature, structure, material or characteristics that the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example description are contained at least one embodiment of the present utility model or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete feature, structure, material or the characteristics of description can be with the suitable manner combination in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that under the situation that does not break away from principle of the present utility model and spirit and can carry out multiple variation, modification, replacement and modification to these embodiment that scope of the present utility model is by claims and be equal to and limit.
Claims (11)
1. an air-conditioning system is characterized in that, comprising:
Compressor;
Condenser, the entrance of described condenser links to each other with the exhaust outlet of described compressor;
Evaporimeter, the outlet of described evaporimeter links to each other with the air inlet of described compressor;
Throttle mechanism, the outlet of described throttle mechanism links to each other with the entrance of described evaporimeter;
The condenser bypass pipeline, first end of described condenser bypass pipeline is communicated with the entrance of described condenser, and second end of described condenser bypass pipeline is communicated with the outlet of described condenser;
The cold-starting module, described cold-starting module comprises fluid reservoir and valve, and described fluid reservoir links to each other with the entrance of described throttle mechanism and the outlet of described condenser, and described valve is arranged on the condenser bypass pipeline;
In order to the controller that described compressor is controlled, described controller is connected with described compressor.
2. air-conditioning system as claimed in claim 1 is characterized in that, described valve is magnetic valve, and second end of described condenser bypass pipeline is connected between the outlet of described fluid reservoir and described condenser.
3. air-conditioning system as claimed in claim 1 is characterized in that, described valve is magnetic valve, and second end of described condenser bypass pipeline links to each other with described fluid reservoir.
4. as claim 2 or 3 described air-conditioning systems, it is characterized in that described controller is controlled the break-make of described condenser bypass pipeline to described magnetic valve according to the pressure between the entrance of the exhaust outlet of described compressor and described throttle mechanism.
5. air-conditioning system as claimed in claim 1, it is characterized in that, described valve is the condensation pressure regulation valve, and described condensation pressure regulation valve comprises three interfaces, first interface of described condensation pressure regulation valve is communicated with the entrance of described condenser, second interface of described condensation pressure regulation valve is communicated with the outlet of described condenser, and the 3rd interface of described condensation pressure regulation valve is communicated with described fluid reservoir.
6. air-conditioning system as claimed in claim 1, it is characterized in that, be provided with first check valve between second end of described condenser bypass pipeline and the described fluid reservoir, and the conducting on along second end of described condenser bypass pipeline to the direction of described fluid reservoir of described first check valve.
7. air-conditioning system as claimed in claim 3 is characterized in that, is provided with second check valve between the outlet of described condenser and the described fluid reservoir, and described second check valve is along conducting on the direction that exports to described fluid reservoir of described condenser.
8. air-conditioning system as claimed in claim 1 is characterized in that, also is provided with safety valve on the described fluid reservoir.
9. air-conditioning system as claimed in claim 1 is characterized in that, is provided with filter between described fluid reservoir and the described throttle mechanism, is provided with second magnetic valve between described filter and the described throttle mechanism.
10. as claim 2 or 3 described air-conditioning systems, it is characterized in that, the detector that also comprises the pressure between the entrance of the exhaust outlet that detects described compressor and described throttle mechanism, described controller links to each other with described detector with described magnetic valve respectively, described controller is controlled described closed electromagnetic valve during more than or equal to preset value at the detected pressure of described detector, and controls described solenoid valve conduction during less than described preset value at the detected pressure of described detector.
11. air-conditioning system as claimed in claim 5, it is characterized in that, described condensation pressure regulation valve controls described first interface at the pressure of described second interface or the 3rd interface during more than or equal to preset value and cuts out, and it is open-minded to control described first interface at the pressure of described second interface or the 3rd interface during less than described preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320105790.0U CN203132194U (en) | 2013-03-07 | 2013-03-07 | Air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320105790.0U CN203132194U (en) | 2013-03-07 | 2013-03-07 | Air conditioning system |
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| CN203132194U true CN203132194U (en) | 2013-08-14 |
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| CN201320105790.0U Expired - Fee Related CN203132194U (en) | 2013-03-07 | 2013-03-07 | Air conditioning system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034075A (en) * | 2013-03-07 | 2014-09-10 | 广东美的暖通设备有限公司 | Air-conditioning system |
| CN104879940A (en) * | 2015-05-14 | 2015-09-02 | 珠海格力电器股份有限公司 | Air-conditioner system and control method thereof |
| CN105698424A (en) * | 2016-04-18 | 2016-06-22 | 迪邦仕冷却技术（苏州）有限公司 | Ultralow-temperature refrigeration type single-cooling split air conditioner and ultralow-temperature refrigeration method thereof |
| CN106016852A (en) * | 2015-03-27 | 2016-10-12 | 富士电机株式会社 | Refrigerant loop apparatus |
-
2013
- 2013-03-07 CN CN201320105790.0U patent/CN203132194U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034075A (en) * | 2013-03-07 | 2014-09-10 | 广东美的暖通设备有限公司 | Air-conditioning system |
| CN106016852A (en) * | 2015-03-27 | 2016-10-12 | 富士电机株式会社 | Refrigerant loop apparatus |
| CN106016852B (en) * | 2015-03-27 | 2018-08-31 | 富士电机株式会社 | Refrigerant return device |
| CN104879940A (en) * | 2015-05-14 | 2015-09-02 | 珠海格力电器股份有限公司 | Air-conditioner system and control method thereof |
| CN105698424A (en) * | 2016-04-18 | 2016-06-22 | 迪邦仕冷却技术（苏州）有限公司 | Ultralow-temperature refrigeration type single-cooling split air conditioner and ultralow-temperature refrigeration method thereof |
| CN105698424B (en) * | 2016-04-18 | 2018-03-13 | 迪邦仕冷却技术（苏州）有限公司 | A kind of super low temperature refrigeration method |
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Owner name: GUANGDONG MIDEA HVAC EQUIPMENT CO., LTD. Free format text: FORMER OWNER: MEIDI ELECTRIC APPLIANCES CO., LTD., GUANGDONG Effective date: 20131204 Owner name: MIDEA GROUP CO., LTD. Free format text: FORMER OWNER: GUANGDONG MIDEA HVAC EQUIPMENT CO., LTD. Effective date: 20131204 |
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Effective date of registration: 20131204 Address after: 528311 Beijiao, Guangdong, Shunde Town, Penglai Road, Industrial Avenue, Patentee after: Guangdong Midea HVAC Equipment Co., Ltd. Patentee after: Midea Group Co., Ltd. Address before: 528311 Beijiao, Foshan, Shunde District, the town of Guangdong, the United States Avenue, No. 6 Patentee before: Meidi Electric Appliances Co., Ltd., Guangdong Patentee before: Guangdong Midea HVAC Equipment Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20210307 |