CN109405257A - The water pump freezing preventer and anti-freeze water pump of air-conditioner set - Google Patents
The water pump freezing preventer and anti-freeze water pump of air-conditioner set Download PDFInfo
- Publication number
- CN109405257A CN109405257A CN201811097334.XA CN201811097334A CN109405257A CN 109405257 A CN109405257 A CN 109405257A CN 201811097334 A CN201811097334 A CN 201811097334A CN 109405257 A CN109405257 A CN 109405257A
- Authority
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- China
- Prior art keywords
- water pump
- air
- conditioner set
- heat exchanger
- exchanger tube
- Prior art date
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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 149
- 108010053481 Antifreeze Proteins Proteins 0.000 title claims abstract description 36
- 230000002528 anti-freeze Effects 0.000 title claims abstract description 36
- 230000008014 freezing Effects 0.000 title claims abstract description 36
- 238000007710 freezing Methods 0.000 title claims abstract description 36
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 238000004378 air conditioning Methods 0.000 abstract description 8
- 238000010257 thawing Methods 0.000 abstract description 5
- 239000002826 coolant Substances 0.000 abstract description 4
- 230000004048 modification Effects 0.000 abstract description 4
- 238000012986 modification Methods 0.000 abstract description 4
- 239000003507 refrigerant Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 12
- 239000007788 liquid Substances 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241001214246 Fistularia petimba Species 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
This application involves a kind of water pump freezing preventer of air-conditioner set and anti-freeze water pumps;The freezing preventer includes: heat exchanger tube, air inlet pipe and an air outlet pipe;The heat exchanger tube is wrapped on water pump;One end of the heat exchanger tube is connect by the air inlet pipe with the exhaust end of the compressor of the air-conditioner set, and the other end of the heat exchanger tube is connect by the escape pipe with the suction end of the compressor of the air-conditioner set.The device of the application is able to solve the problem of water pump vane is frozen under low temperature harsh environment, guarantees that air-conditioning heating mode operates normally, and timely and effectively the water generated during defrost ice is discharged;Draw a branch from the high temperature and pressure part of coolant circulating system and flow through water pump mouth, air-conditioner set internal energy is utilized well, does not increase additional heating thawing apparatus, smaller to the structural modification of air-conditioner set, the processing is simple, at low cost.
Description
Technical field
This application involves the anti-freeze technical fields of air-conditioner set, and in particular to a kind of water pump anti-freeze dress of air-conditioner set
It sets and anti-freeze water pump.
Background technique
During air-conditioning internal machine opens heating mode, outdoor machine of air-conditioner heat exchanger is in heat absorption state, it is meant that air-conditioning
Outer machine heat exchanger temperature is lower than temperature, if temperature is down to zero hereinafter, condensed water will build-up ice.Always in heating mould
Formula operation will result in buildup, and at this time heat exchanger surface will cover a thick layer ice, seriously affects outdoor machine of air-conditioner and changes
The heat exchange function of hot device.Heat exchanger is damaged to avoid ice cube from excessively accumulating, running pipeline ice defrost pattern is wanted after a period of time.
So operation a period of time heating mode will being ice for some time when outdoor machine of air-conditioner is when temperature is lower than 0 DEG C
White mode.
During changing ice defrost pattern, the ice cube on heat exchanger, which can melt, generates a large amount of water, can be with using water pump
(cannot directly arrange down in the condensed water of some countries, outdoor machine of air-conditioner) is discharged in water.Water pump is former using centrifugal pump
To pump function due to this water pump adapts to subzero 30 degree unaffected because being, and due to running using centrifugal impeller
Impeller does not rub with spiral case in journey, and which greatly enhances the service lifes of water pump.
In the related technology, outdoor machine of air-conditioner due to environment temperature be outdoor temperature, reach subzero ten several years very in air themperature
To being under conditions of twenties degree, water pump mouth condensed water is by easy icing and freezes water pump vane.If unit is changing ice defrost
Shutdown, water pump stop working suddenly in the process, and the water after thawing will flow to water pump mouth, freeze again.Water pump mouth is in liquid level at this time
Hereinafter, water pump vane, which protrudes into liquid level or less, will partially be frozen in, booting will be unable to starting water pump again, or even cause water pump stuck
The case where burning out water pump.
Summary of the invention
In order to solve in the related technology, water after defrost freezes water pump vane, cause booting can not start water pump from
And the problem of damaging water pump, the application provide the water pump freezing preventer and anti-freeze water pump of a kind of air-conditioner set.
According to the embodiment of the present application in a first aspect, providing a kind of water pump freezing preventer of air-conditioner set, comprising: heat exchange
Pipe, air inlet pipe and an air outlet pipe;
The heat exchanger tube is wrapped on water pump;
One end of the heat exchanger tube is connect by the air inlet pipe with the exhaust end of the compressor of the air-conditioner set, described
The other end of heat exchanger tube is connect by the escape pipe with the suction end of the compressor of the air-conditioner set.
The freezing preventer of the application is utilized the coolant circulating system in air-conditioning system, the refrigerant of relatively-high temperature high pressure from
The exhaust end of compressor inputs air inlet pipe, and to prevent water pump from freezing, the refrigerant after heat exchange is logical for refrigerant heat dissipation when reaching heat exchanger tube
Cross the suction end that escape pipe flows back into compressor.What the device was able to solve that water pump vane under low temperature harsh environment is frozen in asks
Timely and effectively the water generated during defrost ice is discharged for topic;And without increasing additional heating thawing apparatus, to sky
Adjust the structural modification of unit smaller, the processing is simple, at low cost.
Further, the heat exchanger tube is twist wrapped on water pump.
In order to which increasing heat radiation area guarantees the effect of anti-freeze by heat exchanger tube with spiral wound.
Further, the water pump is centrifugal pump;
Correspondingly, the heat exchanger tube is wrapped in the water sucking mouth periphery of the water pump.
Due to centrifugal pump water sucking mouth in liquid level hereinafter, water pump vane protrudes into liquid level part below and will be frozen when freezing
Firmly.Therefore heat exchanger tube only needs pointedly to heat the part around water sucking mouth, and water pump vane can be prevented frozen, guarantee and
When drain.
Further, the freezing preventer further includes electromagnetic valve switch;The electromagnetic valve switch is arranged in the air inlet
On pipe or the escape pipe;
The electromagnetic valve switch is electrically connected with the mainboard of the air-conditioner set, and is controlled by the mainboard of the air-conditioner set.
Since the freezing preventer of the application is to consume a part of internal energy using internal refrigerant circulation.For
The loss of reduction system self-energy, can add an electromagnetic valve switch, outdoor temperature lower than freeze adjust when just unlatching, room
Outer temperature, which is higher than under ice-formation condition, closes this valve, flogs a dead horse to avoid the device, wastes energy.
According to the second aspect of the embodiment of the present application, a kind of anti-freeze water pump using above-mentioned freezing preventer is provided;
The water pump includes spiral case;The surface of the spiral case is provided with the notch being recessed inwardly;
The heat exchanger tube of the freezing preventer is wrapped in the notch.
Further, the notch is the annular groove around the spiral case lateral wall.
Further, the notch quantity being arranged on the spiral case is one or more.
Further, the notch quantity being arranged on the spiral case is two;It is set on spiral case wall between two notches
It is equipped with notch;
Heat exchanger tube ecto-entad in a notch is wound, and is reached after being wound to innermost circle across the notch
Another described notch;In another described notch, the heat exchanger tube is wound from inside to outside.
Further, the notch quantity being arranged on the spiral case is two;
The quantity of the freezing preventer is two, and the heat exchanger tube of two freezing preventers is wound on two institutes respectively
It states in notch.
According to the third aspect of the embodiment of the present application, a kind of air-conditioner set using above-mentioned anti-freeze water pump, institute are provided
It states and is fixedly installed water pump bracket on the outer machine chassis of air-conditioner set;The anti-freeze water pump and the fixed company of the water pump bracket
It connects;
The water sucking mouth of the anti-freeze water pump is buckled on the outer machine chassis of the air-conditioner set.
Further, the water sucking mouth of the anti-freeze water pump is located at bottom end, contacts with the outer machine chassis of the air-conditioner set;
The side wall of the anti-freeze water pump is provided with fixed footing by proximal portion;Fixed footing is passed through for institute using screw
Anti-freeze water pump is stated to be fixed with the water pump bracket.
Further, buffer rubber gasket is provided in the fixed footing;
The buffer rubber gasket is hollow I character form structure;Screw passes through the buffer rubber gasket, is tightened to described
On water pump bracket.
The technical solution that embodiments herein provides can include the following benefits:
The freezing preventer of the application is utilized the coolant circulating system in air-conditioning system, the refrigerant of relatively-high temperature high pressure from
The exhaust end of compressor inputs air inlet pipe, and to prevent water pump from freezing, the refrigerant after heat exchange is logical for refrigerant heat dissipation when reaching heat exchanger tube
Cross the suction end that escape pipe flows back into compressor.What the device was able to solve that water pump vane under low temperature harsh environment is frozen in asks
Topic guarantees that air-conditioning heating mode operates normally, and timely and effectively the water generated during defrost ice is discharged;From refrigerant circulation
The high temperature and pressure part of system draws a branch and flows through water pump mouth, and air-conditioner set internal energy is utilized well, does not increase
Additional heating thawing apparatus, smaller to the structural modification of air-conditioner set, the processing is simple, at low cost.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The application can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and together with specification it is used to explain the principle of the application.
Fig. 1 is the structural schematic diagram of heat exchanger tube in a kind of water pump freezing preventer shown according to an exemplary embodiment.
Fig. 2 is a kind of structural schematic diagram of the spiral case of water pump shown according to an exemplary embodiment.
Fig. 3 is a kind of attachment structure schematic diagram of water pump freezing preventer shown according to an exemplary embodiment.
Fig. 4 is a kind of structural schematic diagram of anti-freeze water pump shown according to an exemplary embodiment.
Fig. 5 is a kind of structural schematic diagram of air-conditioner set shown according to an exemplary embodiment.
Fig. 6 is the combining structure schematic diagram of a kind of water pump and water pump bracket shown according to an exemplary embodiment.
Fig. 7 is a kind of structural schematic diagram of water pump bracket shown according to an exemplary embodiment.
Fig. 8 is the enlarged drawing of the partial structurtes in Fig. 6.
Fig. 9 is the enlarged drawing of the partial structurtes in Fig. 8.
In figure:
101- heat exchanger tube;102- electromagnetic valve switch;
201- notch;The water sucking mouth 202-;203- water outlet;204- fixes footing;
301- water pump bracket;401- buffer rubber gasket;402- screw.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the application.
In some embodiments, the water pump freezing preventer of the air-conditioner set of the application, comprising: heat exchanger tube 101, air inlet pipe
And escape pipe.
Fig. 1 is a kind of structural schematic diagram of heat exchanger tube 101 shown according to an exemplary embodiment.The heat exchanger tube 101
It is wrapped on water pump.
One end of the heat exchanger tube 101 is connect by the air inlet pipe with the exhaust end of the compressor of the air-conditioner set,
The other end of the heat exchanger tube 101 is connect by the escape pipe with the suction end of the compressor of the air-conditioner set.
The freezing preventer of the application is utilized the coolant circulating system in air-conditioning system, the refrigerant of relatively-high temperature high pressure from
The exhaust end of compressor inputs air inlet pipe, and refrigerant heat dissipation is when reaching heat exchanger tube 101 to prevent water pump from freezing, the refrigerant after heat exchange
The suction end of compressor is flowed back by escape pipe.What the device was able to solve that water pump vane under low temperature harsh environment is frozen in asks
Timely and effectively the water generated during defrost ice is discharged for topic;And without increasing additional heating thawing apparatus, to sky
Adjust the structural modification of unit smaller, the processing is simple, at low cost.
In some embodiments, the heat exchanger tube 101 is twist wrapped on water pump.
In order to which increasing heat radiation area guarantees the effect of anti-freeze by heat exchanger tube 101 with spiral wound.
Fig. 2 is a kind of structural schematic diagram of the spiral case of water pump shown according to an exemplary embodiment.As described in Figure, spiral case
Center at be water sucking mouth 202, side is provided with water outlet 203.
In some embodiments, the water pump is centrifugal pump;
Correspondingly, the heat exchanger tube 101 is wrapped in 202 periphery of water sucking mouth of the water pump.
Due to centrifugal pump water sucking mouth 202 in liquid level hereinafter, when freezing water pump vane protrude into liquid level part below will be by
It freezes.Therefore heat exchanger tube 101 only needs pointedly to heat the part around water sucking mouth 202, water pump vane can be prevented to be frozen
Knot guarantees draining in time.
Fig. 3 is a kind of attachment structure schematic diagram of water pump freezing preventer shown according to an exemplary embodiment.Such as figure
It is shown, it is the heat exchanger tube 101 and electromagnetic valve switch 102 of the water pump freezing preventer in dotted line frame.
In some embodiments, the freezing preventer further includes electromagnetic valve switch 102;The electromagnetic valve switch 102 is arranged
In the air inlet pipe or the escape pipe;
The electromagnetic valve switch 102 is electrically connected with the mainboard of the air-conditioner set, and is controlled by the master of the air-conditioner set
Plate.
Since the freezing preventer of the application is to consume a part of internal energy using internal refrigerant circulation.For
The loss of reduction system self-energy, can add an electromagnetic valve switch 102, adjust Shi Caikai lower than freezing in outdoor temperature
It opens, outdoor temperature, which is higher than under ice-formation condition, closes this valve, flogs a dead horse to avoid the device, wastes energy.
In other some embodiments, electromagnetic valve switch 102 can also be closed after confirmation water pump runs well
(whether water pump, which runs well, is learnt to the detection of water pump stall by the mainboard of air-conditioner set), so that the system self-energy of reduction disappears
Consumption.
Fig. 4 is a kind of structural schematic diagram of anti-freeze water pump shown according to an exemplary embodiment.The water pump uses
Any one above-mentioned freezing preventer;The water pump includes spiral case, and the structure of spiral case is as shown in Figure 2.The surface of the spiral case
It is provided with the notch 201 being recessed inwardly;The heat exchanger tube 101 of the freezing preventer is wrapped in the notch 201.
In some embodiments, the notch 201 is the annular groove around the spiral case lateral wall.
In some embodiments, 201 quantity of notch being arranged on the spiral case is one or more.
In some embodiments, 201 quantity of notch being arranged on the spiral case is two;Between two notches 201
It is arranged on spiral case wall jagged;
The heat exchanger tube 101 ecto-entad in a notch 201 is wound, and is lacked after being wound to innermost circle across described
Mouth reaches another described notch 201;In another described notch 201, the heat exchanger tube 101 is wound from inside to outside.
The pipeline that the application is dexterously flowed through using the refrigerant of relatively-high temperature high pressure inside air-conditioning system, draws a branch stream
To water pump mouth.In embodiments herein, water pump spiral casing is designed as 201 structure of double flute mouth, can cleverly along double flute mouth 201 around
Heat exchanger tube 101 processed.And spiral case, as material, has preferable thermal conductivity, when this branch flows through at water pump spiral casing using aluminium
Heat thaws from pipeline is thermally conductive to aluminum spiral case in turn.
In further embodiments, 201 quantity of notch being arranged on the spiral case is two;
The quantity of the freezing preventer is two, and the heat exchanger tube 101 of two freezing preventers is wound on two respectively
In a notch 201.
Fig. 5 is a kind of structural schematic diagram of air-conditioner set shown according to an exemplary embodiment.The air-conditioner set uses
Any one above-mentioned anti-freeze water pump is fixedly installed water pump bracket 301 on the outer machine chassis of the air-conditioner set;It is described
Anti-freeze water pump is fixedly connected with the water pump bracket 301;
The water sucking mouth 202 of the anti-freeze water pump is buckled on the outer machine chassis of the air-conditioner set.
As shown in fig. 6, showing the composite structure of water pump and water pump bracket 301 in figure.
In some embodiments, the water sucking mouth 202 of the anti-freeze water pump is located at bottom end, the outer machine bottom with the air-conditioner set
Disk contact.The top of the anti-freeze water pump is fixedly connected with water pump bracket 301.
As shown in fig. 7, water pump bracket 301 is in 90 ° of dextrorotation of Contraband font.The bottom end two sides of water pump bracket 301 pass through bolt
It is fixed with the outer machine chassis of air-conditioner set.Water pump is arranged under the frame of water pump bracket 301.
As shown in Figure 8 and Figure 9, the side wall of the anti-freeze water pump is provided with fixed footing 204 by proximal portion;Using spiral shell
Nail 402 passes through fixed footing 204 and the anti-freeze water pump and the water pump bracket 301 is fixed.
In some embodiments, buffer rubber gasket 401 is provided in the fixed footing 204;
The buffer rubber gasket 401 is hollow I character form structure;Screw 402 passes through the buffer rubber gasket 401, tightens
It is fixed on the water pump bracket 301.
It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments
Unspecified content may refer to the same or similar content in other embodiments.
It should be noted that term " first ", " second " etc. are used for description purposes only in the description of the present application, without
It can be interpreted as indication or suggestion relative importance.In addition, in the description of the present application, unless otherwise indicated, the meaning of " multiple "
Refer at least two.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the application.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example
Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (12)
1. a kind of water pump freezing preventer of air-conditioner set characterized by comprising heat exchanger tube, air inlet pipe and an air outlet pipe;
The heat exchanger tube is wrapped on water pump;
One end of the heat exchanger tube is connect by the air inlet pipe with the exhaust end of the compressor of the air-conditioner set, the heat exchange
The other end of pipe is connect by the escape pipe with the suction end of the compressor of the air-conditioner set.
2. the apparatus according to claim 1, it is characterised in that: the heat exchanger tube is twist wrapped on water pump.
3. the apparatus according to claim 1, it is characterised in that: the water pump is centrifugal pump;
Correspondingly, the heat exchanger tube is wrapped in the water sucking mouth periphery of the water pump.
4. device according to claim 1-3, it is characterised in that: further include electromagnetic valve switch;The solenoid valve
Switch is arranged in the air inlet pipe or the escape pipe;
The electromagnetic valve switch is electrically connected with the mainboard of the air-conditioner set, and is controlled by the mainboard of the air-conditioner set.
5. a kind of anti-freeze water pump using any one of such as claim 1-4 described device, it is characterised in that: the water pump packet
Include spiral case;The surface of the spiral case is provided with the notch being recessed inwardly;
The heat exchanger tube of the freezing preventer is wrapped in the notch.
6. anti-freeze water pump according to claim 5, it is characterised in that: the notch is around the spiral case lateral wall
Annular groove.
7. anti-freeze water pump according to claim 6, it is characterised in that: the notch quantity being arranged on the spiral case is one
Or it is multiple.
8. anti-freeze water pump according to claim 7, it is characterised in that: the notch quantity being arranged on the spiral case is two
It is a;It is arranged on spiral case wall between two notches jagged;
Heat exchanger tube ecto-entad in a notch is wound, be wound to after innermost circle reached across the notch it is another
A notch;In another described notch, the heat exchanger tube is wound from inside to outside.
9. anti-freeze water pump according to claim 7, it is characterised in that: the notch quantity being arranged on the spiral case is two
It is a;
The quantity of the freezing preventer is two, and the heat exchanger tube of two freezing preventers is wound on two slots respectively
In mouthful.
10. a kind of air-conditioner set using the anti-freeze water pump as described in claim any one of 5-9, it is characterised in that: described
Water pump bracket is fixedly installed on the outer machine chassis of air-conditioner set;The anti-freeze water pump is fixedly connected with the water pump bracket;
The water sucking mouth of the anti-freeze water pump is buckled on the outer machine chassis of the air-conditioner set.
11. air-conditioner set according to claim 10, it is characterised in that: the water sucking mouth of the anti-freeze water pump is located at bottom
End, contacts with the outer machine chassis of the air-conditioner set;
The side wall of the anti-freeze water pump is provided with fixed footing by proximal portion;Passing through fixed footing using screw will be described anti-
Freeze water pump to be fixed with the water pump bracket.
12. air-conditioner set according to claim 11, it is characterised in that: be provided with yielding rubber in the fixed footing
Pad;
The buffer rubber gasket is hollow I character form structure;Screw passes through the buffer rubber gasket, is tightened to the water pump
On bracket.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201811097334.XA CN109405257A (en) | 2018-09-19 | 2018-09-19 | The water pump freezing preventer and anti-freeze water pump of air-conditioner set |
Applications Claiming Priority (1)
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CN201811097334.XA CN109405257A (en) | 2018-09-19 | 2018-09-19 | The water pump freezing preventer and anti-freeze water pump of air-conditioner set |
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Family
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN114135999A (en) * | 2021-11-29 | 2022-03-04 | 浙江富士精工科技有限公司 | Intelligent drainage pump for air conditioner and manufacturing method thereof |
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CN106855269A (en) * | 2017-04-18 | 2017-06-16 | 广东美的制冷设备有限公司 | Condensed water collecting device and air-conditioner |
CN108954780A (en) * | 2018-07-12 | 2018-12-07 | 珠海格力电器股份有限公司 | A kind of drainage system of outdoor machine of air-conditioner and air-conditioning including the drainage system |
CN209131115U (en) * | 2018-09-19 | 2019-07-19 | 珠海格力电器股份有限公司 | Water pump freezing preventer, anti-freeze water pump and the air-conditioner set of air-conditioner set |
CN109322856A (en) * | 2018-09-25 | 2019-02-12 | 珠海格力电器股份有限公司 | The control method of pump part, outdoor unit and outdoor unit |
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