CN104566852B - Air conditioner and motor cooling method of air conditioner - Google Patents
Air conditioner and motor cooling method of air conditioner Download PDFInfo
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- CN104566852B CN104566852B CN201410775840.5A CN201410775840A CN104566852B CN 104566852 B CN104566852 B CN 104566852B CN 201410775840 A CN201410775840 A CN 201410775840A CN 104566852 B CN104566852 B CN 104566852B
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- branch road
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention provides an air conditioner and a motor cooling method of the air conditioner. The air conditioner comprises a coolant flow main loop and a compressor, a condenser, an evaporator and a motor, which are sequentially arranged on the coolant flow main loop, wherein the compressor is provided with a coolant inlet and a coolant outlet, the air conditioner also comprises a first motor cooling branch circuit, a detection control unit and a second motor cooling branch circuit, the second motor cooling branch circuit is arranged between the evaporator and the compressor so as to guide the coolant in an outlet of the evaporator to the coolant inlet, the second motor cooling branch circuit comprises a first coolant pipeline, one end of the first coolant pipeline is connected with the outlet of the evaporator, and the other end of the first coolant pipeline is connected with the coolant inlet; the detection control unit is respectively electrically connected with the first motor cooling branch circuit and the second motor cooling branch circuit so as to control the connection and disconnection of the first motor cooling branch circuit and the second motor cooling branch circuit. According to the air conditioner and the motor cooling method of the air conditioner, the problem of the energy waste in the prior art can be solved.
Description
Technical field
The present invention relates to field of air conditioning, in particular to the motor cooling means of a kind of air-conditioner and air-conditioner.
Background technology
As shown in figure 1, the air-conditioner of prior art includes refrigerant flowing major loop 10 ' and is successively set on refrigerant flowing master
Compressor 1 ' on loop 10 ', condenser 2 ' and evaporimeter 3 '.Wherein, the arrow in Fig. 1 represents the flow direction of refrigerant, pressure
Contracting machine 1 has coolant entrance 11 ', coolant outlet, air entry 13 ' and exhaust outlet 15 ', exhaust outlet 15 ' and condenser 2 '
Entrance connects, and the outlet of condenser 2 ' is connected with the entrance of evaporimeter 3 ', the air entry of the outlet of evaporimeter 3 ' and compressor 1
13 ' connections.
In prior art, air-conditioner includes the first motor cooling branch road 30 '.First motor cools down one end of branch road 30 ' even
It is connected on the pipeline between condenser 2 ' and evaporimeter 3 ', the other end that the first motor cools down branch road 30 ' connects to enter to cooling agent
Mouth 11 '.
Need cool down motor when, using motor cool down branch road 30 ' from the outlet of condenser 2 ' draw refrigerant motor is carried out cold
But, when motor temperature relatively low (i.e. motor temperature is less than preset temperature), certain waste can be caused.
Content of the invention
Present invention is primarily targeted at providing the motor cooling means of a kind of air-conditioner and air-conditioner, to solve existing skill
The problem of the energy waste in art.
To achieve these goals, according to an aspect of the invention, it is provided a kind of air-conditioner.Air-conditioner includes refrigerant
Flowing major loop and the compressor being successively set on refrigerant flowing major loop, condenser, evaporimeter and motor, compressor has
Coolant entrance and coolant outlet, air-conditioner also include first motor cooling branch road, first motor cool down branch road one end with
The outlet of condenser connects, and the other end that the first motor cools down branch road is connected with coolant entrance, and air-conditioner also includes：Detection control
Unit processed；Second motor cooling branch road, the second motor cooling branch road is arranged between evaporimeter and compressor to go out evaporimeter
Refrigerant at mouthful causes coolant entrance, and the second motor cooling branch road includes the first refrigerant pipeline, one end of the first refrigerant pipeline
It is connected with the outlet of evaporimeter, the other end of the first refrigerant pipeline is connected with coolant entrance；Wherein, detection control unit difference
Cool down branch road with the first motor and the second motor cooling branch road electrically connects to control the first motor cooling branch road and the second motor cold
But the break-make of branch road.
Further, the second motor cooling branch road also includes the second refrigerant pipeline, one end of the second refrigerant pipeline and cooling
Agent outlet connect, the other end of the second refrigerant pipeline be connected with the air entry of compressor or the second refrigerant pipeline the other end and
The gas supplementing opening of compressor connect or the second refrigerant pipeline the other end respectively with the air entry of compressor and the tonifying Qi of compressor
Mouth connects.
Further, detection control unit includes：Controller；First switch valve, first switch valve is arranged on the first refrigerant
On pipeline, first switch valve is electrically connected with the controller to control the break-make of the first refrigerant pipeline.
Further, detection control unit also includes：Controller；Second switch valve, it is cold that second switch valve is arranged on second
On matchmaker's pipeline, second switch valve is electrically connected with the controller to control the break-make of the second refrigerant pipeline.
Further, the first motor cooling branch road includes：3rd refrigerant pipeline, one end of the 3rd refrigerant pipeline and condenser
Outlet, the other end of the 3rd refrigerant pipeline connected with coolant entrance；4th refrigerant pipeline, the one of the 4th refrigerant pipeline
End is connected with coolant outlet, and the other end of the 4th refrigerant pipeline is connected with the entrance of evaporimeter.
Further, detection control unit also includes：Controller；3rd switch valve, it is cold that the 3rd switch valve is arranged on the 3rd
On matchmaker's pipeline, the 3rd switch valve is electrically connected with the controller to control the break-make of the 3rd refrigerant pipeline.
Further, detection control unit also includes：Controller；4th switch valve, it is cold that the 4th switch valve is arranged on the 4th
On matchmaker's pipeline, the 4th switch valve is electrically connected with the controller to control the break-make of the 4th refrigerant pipeline.
Further, air-conditioner also includes first flow regulating valve, and first flow regulating valve is arranged on the 3rd refrigerant pipeline
On with control enter coolant entrance refrigerant flow.
Further, air-conditioner also includes second flow regulating valve, and second flow regulating valve is arranged on the outlet of condenser
On pipeline and the entrance of evaporimeter between.
Further, detection control unit also includes temperature sensor and controller, and temperature sensor is arranged on motor,
Controller is electrically connected with temperature sensor.
According to a further aspect in the invention, there is provided a kind of motor cooling means of air-conditioner, motor cooling means adopt
Aforesaid air-conditioner cools down to motor, and motor cooling means comprise the following steps：Detect motor using detection control unit
Temperature；Cool down branch road using the first motor or the second motor cooling branch road cools down to motor.
Application technical scheme, air-conditioner includes refrigerant flowing major loop to be led back with being successively set on refrigerant flowing
Compressor on road, condenser and evaporimeter, compressor has coolant entrance and coolant outlet, and air-conditioner also includes first
Motor cools down branch road, and one end that the first motor cools down branch road is connected with the outlet of condenser, and the first motor cools down the another of branch road
End is connected with coolant entrance, and air-conditioner also includes：Detection control unit；Second motor cooling branch road, the second motor cooling
Road is arranged on so that the refrigerant at evaporator outlet is caused coolant entrance between evaporimeter and compressor, the second motor cooling
Road includes the first refrigerant pipeline, and one end of the first refrigerant pipeline is connected with the outlet of evaporimeter, the other end of the first refrigerant pipeline
It is connected with coolant entrance；Wherein, detection control unit cools down branch road and the second motor cooling branch road electricity respectively with the first motor
Connect to control the first motor to cool down branch road and the break-make of the second motor cooling branch road.In above-mentioned setting, controlled single using detection
Unit can select the first motor cooling branch road or the second motor cooling branch road that motor is cooled down according to actual needs, works as electricity
When machine temperature is relatively low, selects the second motor cooling branch road that the refrigerant of evaporimeter is caused motor and motor is cooled down, can keep away
Exempt from the problem of energy waste.
Brief description
The Figure of description constituting the part of the application is used for providing a further understanding of the present invention, and the present invention shows
Meaning property embodiment and its illustrate for explaining the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the refrigerant flow schematic diagram of the air-conditioner of prior art；
Fig. 2 shows that the embodiment of the air-conditioner according to the present invention cools down branch road using the second motor and motor is cooled down
Schematic flow sheet；
Fig. 3 shows that the embodiment of the air-conditioner according to the present invention cools down branch road using the first motor and motor is cooled down
Schematic flow sheet；And
Fig. 4 shows the schematic flow sheet of the alternate embodiment one of the air-conditioner according to the present invention.
Wherein, above-mentioned accompanying drawing includes the following drawings mark：
1st, compressor；11st, coolant entrance；12nd, coolant outlet；13rd, air entry；14th, gas supplementing opening；15th, exhaust outlet；2、
Condenser；3rd, evaporimeter；4th, controller；5th, first switch valve；6th, second switch valve；7th, the 3rd switch valve；8th, the 4th switch valve；
9th, first flow regulating valve；10th, refrigerant flowing major loop；20th, the second motor cooling branch road；201st, the first refrigerant pipeline；202、
Second refrigerant pipeline；30th, the first motor cooling branch road；301st, the 3rd refrigerant pipeline；302nd, the 4th refrigerant pipeline；40th, second
Adjustable valve.
Specific embodiment
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases
Mutually combine.To describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As shown in Figures 2 and 3, the invention provides a kind of air-conditioner.Air-conditioner include refrigerant flowing major loop 10 and according to
The secondary compressor 1 being arranged on refrigerant flowing major loop 10, condenser 2, evaporimeter 3 and motor.Compressor 1 has cooling agent and enters
Mouthfuls 11 and coolant outlet 12, air-conditioner also includes the first motor cooling branch road 30, the first motor cool down one end of branch road 30 with
The outlet of condenser 2 connects, and the other end that the first motor cools down branch road 30 is connected with coolant entrance 11.Air-conditioner also includes
Two motor cooling branch roads 20, the second motor cooling branch road 20 is arranged between evaporimeter 3 and compressor 1 to export evaporimeter 3
The refrigerant at place causes coolant entrance 11, and the second motor cooling branch road 20 includes the first refrigerant pipeline 201, the first refrigerant pipeline
201 one end is connected with the outlet of evaporimeter 3, and the other end of the first refrigerant pipeline 201 is connected with coolant entrance 11；Wherein,
Detection control unit cools down branch road 30 respectively with the first motor and the second motor cooling branch road 20 electrically connects to control the first motor
Cooling branch road 30 and the break-make of the second motor cooling branch road 20.
By above-mentioned setting, due to increased the second motor cooling branch road 20, user can select different as needed
Branch road cools down to motor, can select the first motor cooling branch road 30 or the cooling of the second motor using detection control unit
Branch road 20 cools down to motor, when motor temperature is less than preset temperature, it is possible to use the first refrigerant pipeline 201 is by evaporimeter
The refrigerant of 3 outlets causes the position at the motor place of compressor 1 to cool down to motor, thus energy saving, it is to avoid waste.
In the present invention and embodiments of the invention, compressor also includes exhaust outlet 15.Wherein, exhaust outlet 15 and condenser 2
Entrance connect, condenser 2 outlet with entrance be connected.
As shown in Figures 2 and 3, in the embodiment of the present invention, the second motor cooling branch road 20 also includes the second refrigerant pipeline
202, one end of the second refrigerant pipeline 202 is connected with coolant outlet 12, the other end of the second refrigerant pipeline 202 and compressor 1
Air entry 13 connect.
In above-mentioned setting, when air-conditioning system starts, using the first refrigerant pipeline 201 by refrigerant by evaporimeter 3 outlet
Cause motor motor is cooled down, the refrigerant after motor is cooled down enters compressor by the second refrigerant pipeline 202
Air entry 13, on the one hand can cool down motor, extend the service life of motor；On the other hand suction superheat can also be improved.
As shown in Figures 2 and 3, in the embodiment of the present invention, detection control unit includes controller 4 and first switch valve 5.Its
In, first switch valve 5 is arranged on the first refrigerant pipeline 201, and first switch valve 5 electrically connects first cold to control with controller 4
The break-make of matchmaker's pipeline 201.
The break-make of the first refrigerant pipeline 201 in above-mentioned setting, can be controlled according to actual needs using first switch valve 5,
Thus cooling treatment is carried out to the motor of compressor 1 according to actual conditions.
As shown in Figures 2 and 3, in the embodiment of the present invention, detection control unit also includes second switch valve 6.Second switch
Valve 6 is arranged on the second refrigerant pipeline 202, and second switch valve 6 is electrically connected with controller 4 to control the second refrigerant pipeline 202
Break-make.
The break-make of the second refrigerant pipeline 202 in above-mentioned setting, can be controlled according to actual needs using second switch valve 6,
In the case that the second refrigerant pipeline 202 is in connection, refrigerant can be caused the air entry 13 of compressor 1 to meet compressor
1 inspiratory demand.
As shown in Figures 2 and 3, in the embodiment of the present invention, the first motor cooling branch road 30 includes the 3rd refrigerant pipeline 301 He
4th refrigerant pipeline 302.
Wherein, the outlet of one end of the 3rd refrigerant pipeline 301 and condenser 2, the other end of the 3rd refrigerant pipeline 301
Connect with coolant entrance 11；One end of 4th refrigerant pipeline 302 is connected with coolant outlet 12, the 4th refrigerant pipeline 302
The other end is connected with the entrance of evaporimeter 3.
In above-mentioned setting, when motor temperature is more than preset temperature, because the refrigerant temperature in condenser 2 exit is relatively low,
More preferable condensation can be played, quickly motor is cooled down such that it is able to cool down branch road 30 using the first motor, extend electricity
Machine or even the service life of air-conditioner.
As shown in Figures 2 and 3, in the embodiment of the present invention, detection control unit also includes the 3rd switch valve 7.3rd switch
Valve 7 is arranged on the 3rd refrigerant pipeline 301, and the 3rd switch valve 7 is electrically connected with controller 4 to control the 3rd refrigerant pipeline 301
Break-make.
The break-make of the 3rd refrigerant pipeline 301 in above-mentioned setting, can be controlled according to actual needs using the 3rd switch valve 7,
In the case that the 3rd refrigerant pipeline 301 is in and opens, the refrigerant that can export condenser 2 causes at the motor of compressor 1
Motor is cooled down, extends the service life of motor.
As shown in Figures 2 and 3, it is preferable that detection control unit also includes the 4th switch valve 8 in the embodiment of the present invention.The
Four switch valves 8 are arranged on the 4th refrigerant pipeline 302, and the 4th switch valve 8 is electrically connected with controller 4 to control the 4th refrigerant pipeline
302 break-make.
The break-make of the 4th refrigerant pipeline 302 in above-mentioned setting, can be controlled using the 4th switch valve 8, when the 4th refrigerant pipe
Road 302 is in the case of opening, and the refrigerant after motor is cooled down can be caused evaporimeter 3 using the 4th refrigerant pipeline 302
Exit, the air entry of compressor 1 will be caused, so that the compression efficiency of compressor 1 is higher after the refrigerant gasification of liquid.
As shown in Figures 2 and 3, in the embodiment of the present invention, air-conditioner also includes first flow regulating valve 9.First flow is adjusted
Section valve 9 is arranged on the 3rd refrigerant pipeline 301 to control the flow of the refrigerant entering coolant entrance 11.
It is preferable that first flow regulating valve 9 is electric expansion valve in the embodiment of the present invention.In above-mentioned setting, can basis
The aperture of the temperature real-time first flow regulating valve 9 of motor, is cooled down to motor with obtaining the lower refrigerant of temperature.
As shown in Figures 2 and 3, in the embodiment of the present invention, air-conditioner also includes second flow regulating valve 40.Second flow is adjusted
Section valve 40 is arranged on the pipeline between the outlet of condenser 2 and the entrance of evaporimeter 3.
It is preferable that second flow regulating valve 40 is electric expansion valve in the embodiment of the present invention.In above-mentioned setting, utilize
Two flow control valves 40 can adjust the flow of the refrigerant entering evaporimeter 3.
In embodiments of the invention, detection control unit also includes temperature sensor.Temperature sensor is arranged on motor,
Controller 4 is electrically connected with temperature sensor.The temperature of the motor being detected according to temperature sensor, can select different refrigerants
Source cools down to motor.When motor temperature is less than or equal to preset temperature, the second motor cooling branch road 20 is in open mode,
First motor cooling branch road 30 is closed, and cools down branch road 20 using the second motor and draws the refrigerant in evaporimeter 3 exit
To motor, thus cooling down to motor, can be with energy saving；When motor temperature is more than preset temperature, the second motor cooling
Branch road 20 is closed, open mode at the first motor cooling branch road 30, because the refrigerant temperature of condenser 2 is relatively low, profit
With the first motor cooling branch road 30, the refrigerant of condenser 2 is caused motor can quickly motor be cooled down.
Present invention also offers a kind of motor cooling means of air-conditioner, motor cooling means are using aforesaid air-conditioner pair
Motor is cooled down, and motor cooling means comprise the following steps：
Detect the temperature of motor using detection control unit；
Cool down branch road 30 using the first motor or the second motor cooling branch road 20 cools down to motor.
In above-mentioned setting, user can select different refrigerant sources according to actual needs, that is, when motor temperature is less than or equal to
During preset temperature, cool down branch road 20 using the second motor and the refrigerant extraction of evaporimeter 3 is cooled down to motor；Work as motor temperature
During more than preset temperature, cool down branch road 30 using the first motor and the refrigerant extraction of condenser 2 is cooled down to motor.
The air-conditioner that Fig. 2 gives the embodiment of the present invention cools down, using the first motor, the flow process that branch road is cooled down to motor
Schematic diagram.Arrow in Fig. 1 represents the flow direction of refrigerant.As shown in figure 1, when motor temperature is less than preset temperature, air-conditioning
When device starts, first switch valve 5 and second switch valve 6 are in opening, i.e. the first refrigerant pipeline 201 and the second refrigerant pipe
Road 202 is in connected state, and the 3rd switch valve 7 and the 4th switch valve 8 are in closed mode (i.e. the 3rd refrigerant pipeline 301 He
4th refrigerant pipeline 302 is in connected state), now the refrigerant in the exit of evaporimeter 3 flow to through the first refrigerant pipeline 201
Coolant entrance 11, thus cooling down to motor, then, cooled dose of outlet of refrigerant 12 is flowed out and through the second refrigerant pipeline
202 air entries flowing to compressor 1, thus improve suction superheat.
The air-conditioner that Fig. 3 gives the embodiment of the present invention cools down, using the second motor, the flow process that branch road is cooled down to motor
Schematic diagram.Arrow in Fig. 2 represents the flow direction of refrigerant.As shown in Fig. 2 when motor temperature is more than preset temperature, closing
First switch valve 5 and second switch valve 6 (closing the second motor cooling branch road 20), open the 3rd switch valve 7 and the 4th switch
Valve 8 (opens the first motor cooling branch road 30), and now refrigerant causes coolant entrance 11 by the outlet of condenser 2 motor is entered
Row cooling, because condenser 2 outlet refrigerant temperature is relatively low, can play more preferable condensation.
As shown in figure 4, in the alternate embodiment one of the present invention, if compressor is compound compressor, going out from cooling agent
The refrigerants of mouth 12 discharge can be connected with the gas supplementing opening 14 of compressor, thus carrying out tonifying Qi to meet the tonifying Qi of compressor to compressor
Demand, the other structures of alternate embodiment one of the present invention are identical with the embodiment of the present invention, and here is not repeated to describe.
In the alternate embodiment two that the present invention is not given, if compressor is compound compressor, can be according to actual need
One end of second refrigerant pipeline 202 is connected with coolant outlet 12, the other end of the second refrigerant pipeline 202 can respectively with pressure
The air entry 13 of contracting machine 1 and gas supplementing opening 14 connect.
The tonifying Qi need of compressor in above-mentioned setting, can be met using the refrigerant one side discharged from coolant outlet 12
Ask, on the other hand can improve the inspiratory capacity of compressor, improve compression efficiency.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect：Air-conditioner bag
Include refrigerant flowing major loop and be successively set on compressor, condenser and the evaporimeter that refrigerant flows on major loop, compress equipment
There are coolant entrance and coolant outlet, air-conditioner also includes the first motor cooling branch road, the first motor cools down one end of branch road
It is connected with the outlet of condenser, the other end that the first motor cools down branch road is connected with coolant entrance, and air-conditioner also includes：Detection
Control unit；Second motor cooling branch road, the second motor cooling branch road is arranged between evaporimeter and compressor with by evaporimeter
The refrigerant in exit causes coolant entrance, and the second motor cooling branch road includes the first refrigerant pipeline, and the one of the first refrigerant pipeline
End is connected with the outlet of evaporimeter, and the other end of the first refrigerant pipeline is connected with coolant entrance；Wherein, detection control unit is divided
Do not cool down branch road with the first motor and the second motor cooling branch road electrically connects to control the first motor cooling branch road and the second motor
The break-make of cooling branch road, in above-mentioned setting, user can select different branch roads motor to be cooled down, using inspection as needed
Surveying control unit can select the first motor cooling branch road or the second motor cooling branch road motor to be cooled down, when motor temperature
When degree is less than preset temperature, it is possible to use the motor that the refrigerant of evaporator outlet causes compressor is located by the first refrigerant pipeline
Position is to cool down to motor, thus energy saving, it is to avoid waste.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (11)
1. a kind of air-conditioner, described air-conditioner includes refrigerant flowing major loop (10) and is successively set on described refrigerant and flows and lead back
Compressor (1) on road (10), condenser (2), evaporimeter (3) and motor, described compressor (1) has coolant entrance (11)
With coolant outlet (12), described air-conditioner also include first motor cooling branch road (30), described first motor cooling branch road
(30) one end is connected with the outlet of described condenser (2), and the other end that described first motor cools down branch road (30) is cold with described
But agent entrance (11) connects it is characterised in that described air-conditioner also includes：
Detection control unit；
Second motor cooling branch road (20), described second motor cooling branch road (20) is arranged on described evaporimeter (3) and described pressure
So that the refrigerant in described evaporimeter (3) exit is caused described coolant entrance (11) between contracting machine (1), described second motor is cold
But branch road (20) includes the first refrigerant pipeline (201), one end of described first refrigerant pipeline (201) and described evaporimeter (3)
Outlet connects, and the other end of described first refrigerant pipeline (201) is connected with described coolant entrance (11)；
Wherein, described detection control unit cools down branch road with described first motor cooling branch road (30) and described second motor respectively
(20) to control, described first motor cools down branch road (30) and described second motor cools down the break-make of branch road (20) for electrical connection.
2. air-conditioner according to claim 1 is it is characterised in that described second motor cooling branch road (20) also includes second
Refrigerant pipeline (202), one end of described second refrigerant pipeline (202) is connected with described coolant outlet (12), and described second is cold
The other end of matchmaker's pipeline (202) be connected with the air entry (13) of described compressor or described second refrigerant pipeline (202) another
One end be connected with the gas supplementing opening (14) of described compressor or described second refrigerant pipeline (202) the other end respectively with described pressure
The gas supplementing opening (14) of the air entry (13) of contracting machine and described compressor connects.
3. air-conditioner according to claim 1 and 2 is it is characterised in that described detection control unit includes：
Controller (4)；
First switch valve (5), described first switch valve (5) is arranged on described first refrigerant pipeline (201), described first switch
Valve (5) is electrically connected with described controller (4) to control the break-make of described first refrigerant pipeline (201).
4. air-conditioner according to claim 2 is it is characterised in that described detection control unit also includes：
Controller (4)；
Second switch valve (6), described second switch valve (6) is arranged on described second refrigerant pipeline (202), described second switch
Valve (6) is electrically connected with described controller (4) to control the break-make of described second refrigerant pipeline (202).
5. air-conditioner according to claim 1 and 2 is it is characterised in that described first motor cooling branch road (30) includes：
3rd refrigerant pipeline (301), one end of described 3rd refrigerant pipeline (301) and the outlet of described condenser (2), institute
The other end stating the 3rd refrigerant pipeline (301) is connected with described coolant entrance (11)；
4th refrigerant pipeline (302), one end of described 4th refrigerant pipeline (302) is connected with described coolant outlet (12), institute
The other end stating the 4th refrigerant pipeline (302) is connected with the entrance of described evaporimeter (3).
6. air-conditioner according to claim 5 is it is characterised in that described detection control unit also includes：
Controller (4)；
3rd switch valve (7), described 3rd switch valve (7) is arranged on described 3rd refrigerant pipeline (301), described 3rd switch
Valve (7) is electrically connected with described controller (4) to control the break-make of described 3rd refrigerant pipeline (301).
7. air-conditioner according to claim 5 is it is characterised in that described detection control unit also includes：
Controller (4)；
4th switch valve (8), described 4th switch valve (8) is arranged on described 4th refrigerant pipeline (302), described 4th switch
Valve (8) is electrically connected with described controller (4) to control the break-make of described 4th refrigerant pipeline (302).
8. air-conditioner according to claim 5 is it is characterised in that described air-conditioner also includes first flow regulating valve (9),
Described first flow regulating valve (9) is arranged on and enters described coolant entrance to control on described 3rd refrigerant pipeline (301)
(11) flow of refrigerant.
9. air-conditioner according to claim 5 is it is characterised in that described air-conditioner also includes second flow regulating valve
(40), described second flow regulating valve (40) is arranged between the outlet of described condenser (2) and the entrance of described evaporimeter (3)
Pipeline on.
10. air-conditioner according to claim 1 and 2 is it is characterised in that described detection control unit also includes TEMP
Device and controller (4), described temperature sensor is arranged on described motor, and described controller (4) is electric with described temperature sensor
Connect.
A kind of 11. motor cooling means of air-conditioner are it is characterised in that described motor cooling means are using according to claim 1
Air-conditioner any one of to 10 cools down to motor, and described motor cooling means comprise the following steps：
Detect the temperature of motor using detection control unit；
Using described first motor cooling branch road (30) or described second motor cooling branch road (20), motor is cooled down.
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| CN201410775840.5A CN104566852B (en) | 2014-12-15 | 2014-12-15 | Air conditioner and motor cooling method of air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410775840.5A CN104566852B (en) | 2014-12-15 | 2014-12-15 | Air conditioner and motor cooling method of air conditioner |
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| CN104566852B true CN104566852B (en) | 2017-02-22 |
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| CN104883004B (en) * | 2015-06-11 | 2018-12-11 | 广东美的暖通设备有限公司 | Motor radiating structure, air conditioner and motor radiating method |
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