CN206847135U - Air-conditioning system and its piping installation - Google Patents
Air-conditioning system and its piping installation Download PDFInfo
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- CN206847135U CN206847135U CN201720767679.6U CN201720767679U CN206847135U CN 206847135 U CN206847135 U CN 206847135U CN 201720767679 U CN201720767679 U CN 201720767679U CN 206847135 U CN206847135 U CN 206847135U
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- air
- conditioning system
- piping installation
- temperature
- pipe fitting
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Abstract
The utility model discloses a kind of air-conditioning system and its piping installation, piping installation includes：Incubator (1), the incubator (1) is interior to have thermal insulation medium (2)；For the fluid pipe fitting being connected with air-conditioning duct, the fluid pipe fitting has the part contacted with the thermal insulation medium (2)；For the heater heated to the thermal insulation medium (2)；For detecting the pipe temperature temperature sensing part (7) of the fluid pipe fitting temperature, the pipe temperature temperature sensing part (7) communicates to connect with the heater.Piping installation provided by the utility model; effectively air-conditioning system can be shut down or powered off because the liquid refrigerants formed after being placed in long-time low temperature heats; stable operation of the air-conditioning system under heating state effectively is ensure that, improves the heating effect and heating efficiency of air-conditioning system.
Description
Technical field
Heating-cooling equipment technical field is the utility model is related to, more particularly to a kind of air-conditioning system and its piping installation.
Background technology
Increasingly being aggravated with the seriousness of northern air pollution, country sequentially releases a series of policies such as " coal change electricity ",
The update of technology is promoted with policy.Wherein, air source heat pump multi-connected machine is a kind of skill for administering northern air pollution very well
One of art heating equipment.But because north of china in winter temperature is relatively low, some commercial places, such as office building etc. in addition, general meeting
After work, air-conditioning system is shut down, started shooting again until daytime next day.After starting shooting again, air-conditioning system is present for a long time not
The phenomenon of heating, the reason for causing this phenomenon be：Indoor set is in low temperature environment for a long time with air-conditioning duct；For to air-conditioning system
System carries out power-off operation or power operation, and air-conditioner set can not continue to heat；After air-conditioning system is placed for a long time, air-conditioning system
In refrigerant be cooled into liquid refrigerants；, it is necessary to be heated to liquid refrigerants after next day starts shooting, this heating is by outdoor
The conducting self-heating of machine compressor, the time is longer, limits the raising frequency of compressor, and for a long time can not normal heating operation, cause to use
The complaint at family.
Wherein, the heating of air source heat pump is that the gaseous refrigerant of HTHP is produced by compressor, is changed by interior
Hot device transfers heat to interior, but a large amount of refrigerants become liquid refrigerants, compressor production after being placed due to long-time low temperature
Raw heat first has to heat this operative liquid refrigerant, consumes the heating time significantly, and during extreme low temperature, due to
Environment temperature is low, causes system low-voltage too low, enters one because the defencive function (preventing liquid hammer) of system itself can limit compressor
Raising frequency is walked, further results in the slow heating of heating.By above-mentioned setting, the heating effect and heating effect of air-conditioning system have impact on
Rate.
Therefore, heating effect and heating efficiency how are improved, is those skilled in the art's urgent problem to be solved.
Utility model content
In view of this, the utility model provides a kind of piping installation, to improve heating effect and heating efficiency.This practicality
It is new to additionally provide a kind of air-conditioning system with above-mentioned piping installation.
To achieve the above object, the utility model provides following technical scheme：
A kind of piping installation, including：
Incubator, the incubator is interior to have thermal insulation medium；
For the fluid pipe fitting being connected with air-conditioning duct, the fluid pipe fitting has the portion contacted with the thermal insulation medium
Point；
For the heater heated to the thermal insulation medium；
For detecting the pipe temperature temperature sensing part of the fluid pipe fitting temperature, the pipe temperature temperature sensing part and the heater
Communication connection.
Preferably, in above-mentioned piping installation, the fluid pipe fitting include being used for the gas pipe that is connected with air-conditioning duct and
For the liquid pipe fitting being connected with air-conditioning duct.
Preferably, in above-mentioned piping installation, the pipe temperature temperature sensing part is arranged on the gas pipe.
Preferably, in above-mentioned piping installation, the fluid pipe fitting has " u "-shaped kink；
The " u "-shaped kink is wrapped in the thermal insulation medium.
Preferably, in above-mentioned piping installation, the heater includes：
Solar panel, the solar panel are connected with the electrical appliance kit of the heater by electric wire；
And/or electric heater unit, the electric heater unit are connected with the electrical appliance kit of the heater by electric wire.
Preferably, in above-mentioned piping installation, the exposed part of the fluid pipe fitting is enclosed with heat-insulation layer heat-preservation cotton.
Preferably, in above-mentioned piping installation, the thermal insulation medium is paraffin.
The utility model additionally provides a kind of air-conditioning system, including the piping installation described in any one as described above.
Preferably, in above-mentioned air-conditioning system, the piping installation is located at the lowermost extent of the air-conditioning system.
Preferably, in above-mentioned air-conditioning system, the indoor set of the air-conditioning system is higher than the outdoor unit of the air-conditioning system, institute
Piping installation is stated to be located at close to the side of the outdoor unit；
The outdoor unit of the air-conditioning system is higher than the indoor set of the air-conditioning system, and the piping installation is located at close to described
The side of indoor set.
Preferably, in above-mentioned air-conditioning system, in addition to control panel dial-up, the control panel dial-up are used to control the pipeline
Device switches between independent control state and online state of a control；
During the independent control state, the piping installation is connected with extraneous independent current source；
During the online state of a control, the piping installation and the source pump of the air-conditioning system share a power supply.
It can be seen from the above technical scheme that piping installation provided by the utility model, is examined according to pipe temperature temperature sensing part
The temperature of the fluid pipe fitting measured judges whether to need to heat, then the thermal insulation medium in incubator is added by heater
Heat, the part that fluid pipe fitting contacts with thermal insulation medium carry out heat exchange with thermal insulation medium, have the function that convection body pipe heating.
By above-mentioned setting, effectively air-conditioning system can be shut down or be powered off the liquid refrigerants because being formed after being placed in long-time low temperature
Heated, effectively ensure that stable operation of the air-conditioning system under heating state, improve air-conditioning system heating effect and
Heating efficiency.
The utility model additionally provides a kind of air-conditioning system with above-mentioned piping installation.Because above-mentioned piping installation has
Above-mentioned technique effect, the air-conditioning system with above-mentioned piping installation also should no longer be tired out one by one herein with same technique effect
State.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation for the piping installation that the utility model embodiment provides；
Fig. 2 is the first structural representation for the air-conditioning system that the utility model embodiment provides；
Fig. 3 is second of structural representation of the air-conditioning system that the utility model embodiment provides.
Embodiment
The utility model discloses a kind of piping installation, to improve heating effect and heating efficiency.The utility model also carries
A kind of air-conditioning system with above-mentioned piping installation is supplied.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Fig. 1 is refer to, the utility model embodiment provides a kind of piping installation, including incubator 1, thermal insulation medium 2, stream
Body pipe fitting, heater and pipe temperature temperature sensing part 7.Wherein, thermal insulation medium 2 is arranged in incubator 1；Fluid pipe fitting be for
The pipe fitting of air-conditioning duct connection, fluid pipe fitting have the part contacted with thermal insulation medium 2；Heater is used for thermal insulation medium 2
Heated；Pipe temperature temperature sensing part 7 is used to detect fluid pipe fitting temperature, and pipe temperature temperature sensing part 7 communicates to connect with heater.
The piping installation that the utility model embodiment provides, the fluid pipe fitting obtained according to the detection of pipe temperature temperature sensing part 7
Temperature judges whether to need to heat, then the thermal insulation medium 2 in incubator 1 is heated by heater, and fluid pipe fitting is with protecting
The part that warm medium 2 contacts carries out heat exchange with thermal insulation medium 2, has the function that convection body pipe heating.By above-mentioned setting,
Effectively air-conditioning system can be shut down or be powered off because the liquid refrigerants formed after being placed in long-time low temperature heats, effectively
Stable operation of the air-conditioning system under heating state is ensure that, improves heating effect and heating efficiency.
Preferably, fluid pipe fitting is the pipe fitting on the connecting line in air-conditioning system between indoor set B and outdoor unit A.
Further, fluid pipe fitting is including for the gas pipe 10 being connected with air-conditioning duct and for connecting with air-conditioning duct
The liquid pipe fitting 11 connect.Wherein, the pipeline that gas pipe 10 is connected with air-conditioning duct, its interior fluid are high-temperature gas when heating；
The pipeline that liquid pipe fitting 1 is connected with air-conditioning duct, it is the cryogenic gas after heat exchange when its interior fluid heats.It is of course also possible to only
Gas pipe 10 or liquid pipe fitting 11 are arranged to fluid pipe fitting, no longer tires out one by one state and within protection domain herein.
Preferably, pipe temperature temperature sensing part 7 is arranged on gas pipe 10., being capable of effective detection heating by above-mentioned setting
Shi Liuti hot-gas temperature, and then avoid the unnecessary waste of the energy.It is of course also possible to pipe temperature temperature sensing part 7 is set
In on liquid pipe fitting 11.
In order to improve heat exchange efficiency, fluid pipe fitting has " u "-shaped kink；" u "-shaped kink is wrapped in thermal insulation medium 2
It is interior.It is of course also possible to be arranged to keep straight on pipe fitting or " V " shape pipe fitting etc., no longer it is discussed in detail herein.
In the present embodiment, heater includes solar panel 4 and electric heater unit 5, solar panel 4 and heating
The electrical appliance kit 6 of device is connected by electric wire 8；Electric heater unit 5 is connected with the electrical appliance kit 6 of heater by electric wire.By upper
Setting is stated, preferably the electrical appliance kit 6 of heater is carried out using solar panel 4 in the daylight sufficient period (such as daytime)
Power supply, is powered in the period (such as night) of sunshine shortage using electric heater unit 5.
Solar panel 4 or electric heater unit 5 can also be only set.
Preferably, the exposed part of fluid pipe fitting is enclosed with heat-insulation layer 3.By setting heat-insulation layer 3, further fluid pipe
Part serves heat insulation effect.Wherein, heat-insulation layer 3 is to be process by insulation cotton material.
In the present embodiment, thermal insulation medium 2 is preferably paraffin.Because paraffin has preferably accumulation of heat and the capacity of heat transmission, lead to
Cross and thermal insulation medium 2 is arranged to paraffin, effectively increase the piping installation of the utility model embodiment offer to liquid refrigerants
Heating effect.
The utility model embodiment additionally provides a kind of air-conditioning system, including any piping installation as described above.Due to upper
Stating piping installation has above-mentioned technique effect, the air-conditioning system with above-mentioned piping installation also should with same technique effect,
No longer tire out one by one herein and state.
Above-mentioned air-conditioning system can be air source heat pump multi-connected machine, or split-type air conditioner etc. is no longer detailed herein
Introduce.
Because the weight of liquid refrigerants is higher than gaseous coolant, in order to ensure heating effect, piping installation is located at air-conditioning system
Lowermost extent.
As shown in Fig. 2 the indoor set B of air-conditioning system is higher than the outdoor unit A of air-conditioning system, piping installation is located at close to outdoor
Machine A side.Indoor set B quantity is multiple and in each storey setting of building, and outdoor unit A is arranged at the most bottom of building
Layer, therefore, piping installation are located at close to outdoor unit A side.Preferably, the solar panel 4 of piping installation is located at building
Top, the miscellaneous part of piping installation is arranged at the inside of the bottom, close to outdoor unit A position.
As shown in figure 3, the outdoor unit A of air-conditioning system is higher than the indoor set B of air-conditioning system, piping installation is located at close to indoor
Machine B side.
In order to realize that air-conditioning system operates in off-mode and the heating heat accumulation of off-position, the utility model embodiment carries
The air-conditioning system of confession also includes control panel dial-up, and control panel dial-up is used for control piper device in independent control state and online control
Switch between state processed；Wherein, during independent control state, piping installation is connected with extraneous independent current source；During online state of a control,
The source pump of piping installation and air-conditioning system shares a power supply.
The utility model embodiment additionally provides a kind of heating heat-storing method of air-conditioning system, and application is any hollow as described above
Adjusting system, it is characterised in that including step：
S1：The detection temperature T of pipe temperature temperature sensing part 77；
Detected by the temperature of the convection body pipe fitting of pipe temperature temperature sensing part 7, wherein, the temperature of fluid pipe fitting reflects indirectly
The temperature of fluid pipe fitting internal flow, when the temperature of fluid pipe fitting is less than or equal to certain value, the stream of fluid inside pipe fitting
Body is liquid.The temperature of the convection body pipe fitting of pipe temperature temperature sensing part 7 is detected, and obtains detection temperature T7。
S2：The detection temperature T of pipe temperature temperature sensing part 77≤ temperature-sensitive bag temperature is preset, begin to warm up.
The heating heat-storing method for the air-conditioning system that the utility model embodiment provides, is detected according to pipe temperature temperature sensing part 7
To the temperature of fluid pipe fitting judge whether to need to heat, then begin to warm up, effectively air-conditioning system can be shut down or powered off because
The liquid refrigerants formed after the placement of long-time low temperature is heated, and effectively ensure that air-conditioning system is steady under heating state
Fixed operation, improves heating effect and heating efficiency.
Preferably, also include in step S1：Detect outdoor environment temperature TOUT；
Because air-conditioning system shutdown or off-position are after the placement of long-time low temperature, it can just make the air-conditioning of air-conditioning system
Refrigerant in pipeline forms liquid refrigerants, therefore, detection outdoor environment temperature TOUT, control accuracy can be effectively improved.
Step S2 is specifically, outdoor environment temperature TOUTLess than external environment preset temperature and the detection temperature of pipe temperature temperature sensing part 7
Spend T7≤ temperature-sensitive bag temperature is preset, begin to warm up.
It is of course also possible to outdoor environment temperature T is not detectedOUT, only pipe temperature temperature sensing part 7 is detected, and will detection temperature
Spend T7Compared with default temperature-sensitive bag temperature.
Further, in step S2, outdoor environment temperature TOUTLess than or equal to external environment preset temperature and air-conditioning system
Downtime is more than or equal to scheduled down time t, begins to warm up.By above-mentioned setting, effectively prevent because of short-term detection
Low temperature or detection error and cause heating operation, further increase control accuracy.
Further, in step S2, the detection temperature T of pipe temperature temperature sensing part 77≤ default temperature-sensitive bag temperature and it is lasting when
Between be more than or equal to predetermined lasting time, begin to warm up.By above-mentioned setting, equally avoid because of short-term detection low temperature or inspection
Survey error and cause heating operation, further increase control accuracy.
The heating heat-storing method for the air-conditioning system that the utility model embodiment provides, in step S2, begin to warm up including opening
The outdoor unit A for opening heater and air-conditioning system is in heating operation state；It is understood that in the outdoor unit of air-conditioning system
When A is in heating operation state, indoor set B electric expansion valves standard-sized sheet but indoor set B blower fans are motionless, i.e. air-conditioning system is not made
Heat operation, and be only that outdoor unit A is in heating operation state, only refrigerant is heated.
Or in step S2, begin to warm up to open heater.By only opening heater, heating operation is completed.
Also include step S2 ' detection indoor unit capability demands before step S2, indoor unit capability demand is opened for indoor set B
The demand of heating.Wherein, the state of indoor unit capability demand=0 is that indoor set B is not turned on, i.e. is not used for using heating
Operation, in this case, air-conditioning system are in the state of shutdown or power-off.
In the present embodiment, need to set heating condition in step S2, heating condition includes default temperature-sensitive bag temperature, external environment
Preset temperature, scheduled down time t and predetermined lasting time etc., after heating condition is met, begin to warm up.Therefore, in step
In S2, the result setting heating condition according to indoor unit capability demand.By above-mentioned setting, control accuracy is further increased.
Preferably, step S3 is also included after step S2:Judge whether to stop according to indoor unit capability demand and heating effect
Only heat.Similarly, by above-mentioned setting, control accuracy can further be improved.
In the first embodiment, in step S2 ', indoor unit capability demand=0 is detected, indoor set B is not turned on heating
Demand.In this case, can be according to detection indoor unit capability demand setting heating condition.In the present embodiment, sense is preset
Thermometer bulb temperature is outdoor environment temperature TOUT, external environment preset temperature is -5 DEG C；Scheduled down time t is according to outdoor environment temperature
TOUTAnd set, refer to following table；Predetermined lasting time is 30min.
In the present embodiment, in online state of a control, step S2, by outdoor environment temperature TOUTLess than -5 DEG C and stop
Machine time >=t min and the detection temperature T of pipe warming thermometer bulb 77≤TOUTDEG C and time when being continuously 30min, in heated condition.
In this embodiment, it is preferred that air-conditioning system is in heating operation state, the electric expansion valve of indoor set is shown in a fully open operation,
But the blower fan of indoor set keeps original state.
The scheduled down time t of table 1 and outdoor environment temperature TOUTRelativeness table
In step S3, as detection temperature T7≥TOUT+ T ' or T7>=a DEG C and continue the predetermined detection time when, and/or, work as room
During interior machine ability need ＞ 0, and/or, when run time >=first predetermined heat time of heater, stop heating.Can
With understanding, a is constant.In the present embodiment, T '=20 DEG C, a=0, the first predetermined heat time=60min, pre- regular inspection
Survey time=10min.
It is understood that above-mentioned parameter is it can also be provided that other values, no longer illustrate and in protection model one by one herein
Within enclosing.
Separate state can also be in, in the present embodiment, it is -15 DEG C to preset temperature-sensitive bag temperature, and predetermined lasting time is
30min, now, in heated condition.
In step S2, by outdoor environment temperature TOUTLess than -5 DEG C and downtime >=tmin and pipe warming thermometer bulb 7 detect temperature
Spend T7≤TOUTDEG C and time when being continuously 30min, in heated condition.In this embodiment, it is preferred that air-conditioning system is in
Heating operation state, the electric expansion valve of indoor set are shown in a fully open operation, but the blower fan of indoor set keeps original state.
In step S3, as detection temperature T7>=a DEG C and continue the predetermined detection time when, and/or, when the operation of heater
During time >=first predetermined heat time, stop heating.First predetermined heat time=120min, a=-5, predetermined detection time
=30min.
In second of embodiment, in step S2 ', detection indoor unit capability demand ＞ 0, then indoor set B unlatchings heat
Demand.In this case, can be according to detection indoor unit capability demand setting heating condition.
In the present embodiment, it is 25 DEG C to preset temperature-sensitive bag temperature, and external environment preset temperature is -15 DEG C；Predetermined lasting time
For 30min.
In step S2, outdoor environment temperature TOUT＜ -15 DEG C, and the detection temperature T of pipe warming thermometer bulb 77≤ 25 DEG C and time
30min is continuously, then heating starting.
In step S3, as outdoor environment temperature TOUTWhen allowing temperature higher than external environment, stop heating；
As outdoor environment temperature TOUTAllow temperature greater than or equal to external environment preset temperature and less than or equal to external environment
When, last control is maintained, control first is defaulted as opening heating；As outdoor environment temperature TOUTLess than external environment preset temperature
When, when run time >=second predetermined heat time of heater, stop heating.
External environment preset temperature is -15 DEG C, and external environment allows -10 DEG C of temperature, and the second predetermined heat time was 30min.
By setting external environment preset temperature and external environment to allow temperature, it effectively prevent air-conditioning system and shut down and open repeatedly
Dynamic operation.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (11)
- A kind of 1. piping installation, it is characterised in that including：Incubator (1), the incubator (1) is interior to have thermal insulation medium (2)；For the fluid pipe fitting being connected with air-conditioning duct, the fluid pipe fitting has the part contacted with the thermal insulation medium (2)；For the heater heated to the thermal insulation medium (2)；For detecting the pipe temperature temperature sensing part (7) of the fluid pipe fitting temperature, the pipe temperature temperature sensing part (7) fills with the heating Put communication connection.
- 2. piping installation as claimed in claim 1, it is characterised in that the fluid pipe fitting includes being used to be connected with air-conditioning duct Gas pipe (10) and the liquid pipe fitting (11) for being connected with air-conditioning duct.
- 3. piping installation as claimed in claim 2, it is characterised in that the pipe temperature temperature sensing part (7) is arranged at the gas On pipe fitting (10).
- 4. piping installation as claimed in claim 1, it is characterised in that the fluid pipe fitting has " u "-shaped kink；The " u "-shaped kink is wrapped in the thermal insulation medium (2).
- 5. piping installation as claimed in claim 1, it is characterised in that the heater includes：Solar panel (4), the solar panel (4) and the electrical appliance kit (6) of the heater are connected by electric wire (8) Connect；And/or electric heater unit (5), the electric heater unit (5) and the electrical appliance kit (6) of the heater are connected by electric wire Connect.
- 6. piping installation as claimed in claim 1, it is characterised in that the exposed part of the fluid pipe fitting is enclosed with heat-insulation layer (3) heat-preservation cotton.
- 7. the piping installation as described in claim any one of 1-6, it is characterised in that the thermal insulation medium (2) is paraffin.
- 8. a kind of air-conditioning system, it is characterised in that including the piping installation as described in claim any one of 1-7.
- 9. air-conditioning system as claimed in claim 8, it is characterised in that the piping installation is located at the minimum of the air-conditioning system Region.
- 10. air-conditioning system as claimed in claim 9, it is characterised in that the indoor set (B) of the air-conditioning system is higher than the sky The outdoor unit (A) of adjusting system, the piping installation are located at close to the side of the outdoor unit (A)；The outdoor unit (A) of the air-conditioning system is higher than the indoor set (B) of the air-conditioning system, and the piping installation is located at close to institute State indoor set (B) side.
- 11. the air-conditioning system as described in claim any one of 8-10, it is characterised in that also including control panel dial-up, the control Making sheet dial-up is used to control the piping installation between independent control state and online state of a control to switch；During the independent control state, the piping installation is connected with extraneous independent current source；During the online state of a control, the piping installation and the source pump of the air-conditioning system share a power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720767679.6U CN206847135U (en) | 2017-06-27 | 2017-06-27 | Air-conditioning system and its piping installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720767679.6U CN206847135U (en) | 2017-06-27 | 2017-06-27 | Air-conditioning system and its piping installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206847135U true CN206847135U (en) | 2018-01-05 |
Family
ID=60803278
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720767679.6U Active CN206847135U (en) | 2017-06-27 | 2017-06-27 | Air-conditioning system and its piping installation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228509A (en) * | 2017-06-27 | 2017-10-03 | 珠海格力电器股份有限公司 | Piping installation, air-conditioning system and its heating heat-storing method |
-
2017
- 2017-06-27 CN CN201720767679.6U patent/CN206847135U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228509A (en) * | 2017-06-27 | 2017-10-03 | 珠海格力电器股份有限公司 | Piping installation, air-conditioning system and its heating heat-storing method |
| CN107228509B (en) * | 2017-06-27 | 2023-05-30 | 珠海格力电器股份有限公司 | Pipeline device, air conditioning system and heating and heat storage method thereof |
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