CN104566852A - 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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- CN104566852A CN104566852A CN201410775840.5A CN201410775840A CN104566852A CN 104566852 A CN104566852 A CN 104566852A CN 201410775840 A CN201410775840 A CN 201410775840A CN 104566852 A CN104566852 A CN 104566852A
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- 238000001816 cooling Methods 0.000 title claims abstract description 94
- 239000003507 refrigerant Substances 0.000 claims abstract description 154
- 239000002826 coolant Substances 0.000 claims abstract description 52
- 238000001514 detection method Methods 0.000 claims abstract description 32
- 230000001502 supplementing effect Effects 0.000 claims description 7
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000004378 air conditioning Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000003434 inspiratory effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
-
- 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)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air-Conditioning For Vehicles (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner and a motor cooling method of the air conditioner. The air conditioner includes that the refrigerant flows the major loop and sets gradually compressor, condenser, evaporimeter and the motor on the refrigerant flows the major loop, and the compressor has coolant entry and coolant export, and the air conditioner still includes first motor cooling branch road, and the air conditioner still includes: a detection control unit; the second motor cooling branch is arranged between the evaporator and the compressor so as to lead the refrigerant at the outlet of the evaporator to the coolant inlet, and comprises a first refrigerant pipeline, one end of the first refrigerant pipeline is connected with the outlet of the evaporator, and the other end of the first refrigerant pipeline is connected with the coolant inlet; the detection control unit is electrically connected with the first motor cooling branch and the second motor cooling branch respectively to control the on-off of the first motor cooling branch and the second motor cooling branch. According to the invention, the problem of 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 comprises refrigerant flowing major loop 10 ' and the compressor 1 ', condenser 2 ' and the evaporimeter 3 ' that are successively set on refrigerant flowing major loop 10 '.Wherein, arrow in Fig. 1 represents the flow direction of refrigerant, compressor 1 has coolant entrance 11 ', coolant outlet, air entry 13 ' and exhaust outlet 15 ', exhaust outlet 15 ' is connected with the entrance of condenser 2 ', the outlet of condenser 2 ' is connected with the entrance of evaporimeter 3 ', and the outlet of evaporimeter 3 ' is connected with the air entry 13 ' of compressor 1.
In prior art, air-conditioner comprises the first motor cooling branch road 30 '.One end of first motor cooling branch road 30 ' is connected on the pipeline between condenser 2 ' and evaporimeter 3 ', and the other end of the first motor cooling branch road 30 ' is connected to coolant entrance 11 '.
When needing cooling motor, utilize motor cooling branch road 30 ' to draw refrigerant from the outlet of condenser 2 ' and motor is cooled, when motor temperature lower (namely motor temperature is lower than preset temperature), certain waste can be caused.
Summary of the invention
Main purpose of the present invention is the motor cooling means providing a kind of air-conditioner and air-conditioner, to solve the problem of energy waste of the prior art.
To achieve these goals, according to an aspect of the present invention, a kind of air-conditioner is provided.Air-conditioner comprises refrigerant flowing major loop and is successively set on compressor, condenser, evaporimeter and the motor on refrigerant flowing major loop, compressor has coolant entrance and coolant outlet, air-conditioner also comprises the first motor cooling branch road, first motor cooling one end of branch road is connected with the outlet of condenser, the other end of the first motor cooling branch road is connected with coolant entrance, and air-conditioner also comprises: detection control unit; Second motor cooling branch road, second motor cooling branch road is arranged between evaporimeter and compressor so that the refrigerant at evaporator outlet place is caused coolant entrance, second motor cooling branch road comprises the first refrigerant pipeline, one end of first refrigerant pipeline 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 cools branch road and the second motor respectively and cools branch road and be electrically connected to control the first motor and cool the break-make that branch road and the second motor cool branch road with the first motor.
Further, second motor cooling branch road also comprises the second refrigerant pipeline, one end of second refrigerant pipeline is connected with coolant outlet, and the other end of the second refrigerant pipeline is connected with the air entry of compressor or the other end of the second refrigerant pipeline is connected with the gas supplementing opening of compressor or the other end of the second refrigerant pipeline is connected with the air entry of compressor and the gas supplementing opening of compressor respectively.
Further, detection control unit comprises: controller; First switch valve, the first switch valve is arranged on the first refrigerant pipeline, and the first switch valve is electrically connected the break-make controlling the first refrigerant pipeline with controller.
Further, detection control unit also comprises: controller; Second switch valve, second switch valve is arranged on the second refrigerant pipeline, and second switch valve is electrically connected the break-make controlling the second refrigerant pipeline with controller.
Further, the first motor cooling branch road comprises: the 3rd refrigerant pipeline, one end of the 3rd refrigerant pipeline and the outlet of condenser, and the other end of the 3rd refrigerant pipeline is communicated with coolant entrance; 4th refrigerant pipeline, one end of the 4th refrigerant pipeline is communicated with coolant outlet, and the other end of the 4th refrigerant pipeline is communicated with the entrance of evaporimeter.
Further, detection control unit also comprises: controller; 3rd switch valve, the 3rd switch valve is arranged on the 3rd refrigerant pipeline, and the 3rd switch valve is electrically connected the break-make controlling the 3rd refrigerant pipeline with controller.
Further, detection control unit also comprises: controller; 4th switch valve, the 4th switch valve is arranged on the 4th refrigerant pipeline, and the 4th switch valve is electrically connected the break-make controlling the 4th refrigerant pipeline with controller.
Further, air-conditioner also comprises first flow control valve, and first flow control valve is arranged on the 3rd refrigerant pipeline to control to enter the flow of the refrigerant of coolant entrance.
Further, air-conditioner also comprises second adjustable valve, and second adjustable valve is arranged on the pipeline between the outlet of condenser and the entrance of evaporimeter.
Further, detection control unit also comprises temperature sensor and controller, and temperature sensor is arranged on motor, and controller is electrically connected with temperature sensor.
According to a further aspect in the invention, provide a kind of motor cooling means of air-conditioner, motor cooling means adopts aforesaid air-conditioner to cool motor, and motor cooling means comprises the following steps: utilize detection control unit to detect the temperature of motor; The first motor cooling branch road or the second motor cooling branch road is utilized to cool motor.
Apply technical scheme of the present invention, air-conditioner comprises refrigerant flowing major loop and is successively set on compressor, condenser and the evaporimeter on refrigerant flowing major loop, compressor has coolant entrance and coolant outlet, air-conditioner also comprises the first motor cooling branch road, first motor cooling one end of branch road is connected with the outlet of condenser, the other end of the first motor cooling branch road is connected with coolant entrance, and air-conditioner also comprises: detection control unit; Second motor cooling branch road, second motor cooling branch road is arranged between evaporimeter and compressor so that the refrigerant at evaporator outlet place is caused coolant entrance, second motor cooling branch road comprises the first refrigerant pipeline, one end of first refrigerant pipeline 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 cools branch road and the second motor respectively and cools branch road and be electrically connected to control the first motor and cool the break-make that branch road and the second motor cool branch road with the first motor.Above-mentionedly to arrange, utilize detection control unit that the first motor cooling branch road or the second motor cooling branch road can be selected according to actual needs to cool motor, when motor temperature is lower, select the second motor cooling branch road that the refrigerant of evaporimeter is caused motor to cool motor, the problem of energy waste can be avoided.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form 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 the schematic flow sheet utilizing the second motor cooling branch road to cool motor according to the embodiment of air-conditioner of the present invention;
Fig. 3 shows the schematic flow sheet utilizing the first motor cooling branch road to cool motor according to the embodiment of air-conditioner of the present invention; And
Fig. 4 shows the schematic flow sheet of the alternate embodiment one according to air-conditioner of the present invention.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
1, compressor; 11, coolant entrance; 12, coolant outlet; 13, air entry; 14, gas supplementing opening; 15, exhaust outlet; 2, condenser; 3, evaporimeter; 4, controller; 5, the first switch valve; 6, second switch valve; 7, the 3rd switch valve; 8, the 4th switch valve; 9, first flow control valve; 10, refrigerant flowing major loop; 20, the second motor cooling branch road; 201, the first refrigerant pipeline; 202, the second refrigerant pipeline; 30, the first motor cooling branch road; 301, the 3rd refrigerant pipeline; 302, the 4th refrigerant pipeline; 40, second adjustable valve.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figures 2 and 3, the invention provides a kind of air-conditioner.Compressor 1, condenser 2, evaporimeter 3 and motor that air-conditioner comprises refrigerant flowing major loop 10 and is successively set on refrigerant flowing major loop 10.Compressor 1 has coolant entrance 11 and coolant outlet 12, and one end that air-conditioner also comprises the first motor cooling branch road 30, first motor cooling branch road 30 is connected with the outlet of condenser 2, and the other end of the first motor cooling branch road 30 is connected with coolant entrance 11.Air-conditioner also comprises the second motor cooling branch road 20, second motor cooling branch road 20 is arranged between evaporimeter 3 and compressor 1 so that the refrigerant in evaporimeter 3 exit is caused coolant entrance 11, second motor cooling branch road 20 comprises the first refrigerant pipeline 201, one end of first refrigerant pipeline 201 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 branch road 30 and the second motor respectively and cools branch road 20 and be electrically connected to control the first motor and cool the break-make that branch road 30 and the second motor cool branch road 20 with the first motor.
By above-mentioned setting, owing to adding the second motor cooling branch road 20, user can select different branch roads to cool motor as required, utilize detection control unit that the first motor cooling branch road 30 or the second motor cooling branch road 20 pairs of motors can be selected to cool, when motor temperature is lower than preset temperature, the first refrigerant pipeline 201 can be utilized the refrigerant that evaporimeter 3 exports to be caused the position at the motor place of compressor 1 to cool motor, thus economize energy, avoid waste.
In the present invention and embodiments of the invention, compressor also comprises exhaust outlet 15.Wherein, exhaust outlet 15 is connected with the entrance of condenser 2, the outlet of condenser 2 with entrance be connected.
As shown in Figures 2 and 3, in the embodiment of the present invention, one end that the second motor cooling branch road 20 also comprises the second refrigerant pipeline 202, second refrigerant pipeline 202 is connected with coolant outlet 12, and the other end of the second refrigerant pipeline 202 is connected with the air entry 13 of compressor 1.
Above-mentionedly to arrange, when air-conditioning system starts, utilize the first refrigerant pipeline 201 that refrigerant is caused motor by the outlet of evaporimeter 3 to cool motor, cooled refrigerant to enter compressor air entry 13 by the second refrigerant pipeline 202 is carried out to motor, on the one hand can cooling motor, extend the service life of motor; Suction superheat can also be improved on the other hand.
As shown in Figures 2 and 3, in the embodiment of the present invention, detection control unit comprises controller 4 and the first switch valve 5.Wherein, the first switch valve 5 is arranged on the first refrigerant pipeline 201, and the first switch valve 5 is electrically connected the break-make controlling the first refrigerant pipeline 201 with controller 4.
Above-mentionedly to arrange, utilize the first switch valve 5 can control the break-make of the first refrigerant pipeline 201 according to actual needs, thus according to actual conditions, cooling processing is carried out to the motor of compressor 1.
As shown in Figures 2 and 3, in the embodiment of the present invention, detection control unit also comprises second switch valve 6.Second switch valve 6 is arranged on the second refrigerant pipeline 202, and second switch valve 6 is electrically connected the break-make controlling the second refrigerant pipeline 202 with controller 4.
Above-mentionedly to arrange, utilize second switch valve 6 can control the break-make of the second refrigerant pipeline 202 according to actual needs, when the second refrigerant pipeline 202 is in connection, refrigerant can be caused the air entry 13 of compressor 1 to meet the inspiratory demand of compressor 1.
As shown in Figures 2 and 3, in the embodiment of the present invention, the first motor cooling branch road 30 comprises the 3rd refrigerant pipeline 301 and the 4th refrigerant pipeline 302.
Wherein, one end of the 3rd refrigerant pipeline 301 and the outlet of condenser 2, the other end of the 3rd refrigerant pipeline 301 is communicated with coolant entrance 11; One end of 4th refrigerant pipeline 302 is communicated with coolant outlet 12, and the other end of the 4th refrigerant pipeline 302 is communicated with the entrance of evaporimeter 3.
Above-mentionedly to arrange, when motor temperature is greater than preset temperature, because the refrigerant temperature in condenser 2 exit is lower, better condensation can be played, thus the first motor cooling branch road 30 can be utilized to cool motor fast, extend the motor even service life of air-conditioner.
As shown in Figures 2 and 3, in the embodiment of the present invention, detection control unit also comprises 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 the break-make controlling the 3rd refrigerant pipeline 301 with controller 4.
Above-mentionedly to arrange, utilize the 3rd switch valve 7 can control the break-make of the 3rd refrigerant pipeline 301 according to actual needs, when the 3rd refrigerant pipeline 301 be in open when, the motor place that the refrigerant that condenser 2 exports can be caused compressor 1 cools motor, extends service life of motor.
As shown in Figures 2 and 3, in the embodiment of the present invention, preferably, detection control unit also comprises the 4th switch valve 8.4th switch valve 8 is arranged on the 4th refrigerant pipeline 302, and the 4th switch valve 8 is electrically connected the break-make controlling the 4th refrigerant pipeline 302 with controller 4.
Above-mentionedly to arrange, utilize the 4th switch valve 8 can control the break-make of the 4th refrigerant pipeline 302, when the 4th refrigerant pipeline 302 be in open when, utilize the 4th refrigerant pipeline 302 can will cause the exit of evaporimeter 3 to the cooled refrigerant of motor, with the air entry by causing compressor 1 after the gasification of the refrigerant of liquid state, thus make the compression efficiency of compressor 1 higher.
As shown in Figures 2 and 3, in the embodiment of the present invention, air-conditioner also comprises first flow control valve 9.First flow control valve 9 is arranged on the 3rd refrigerant pipeline 301 to control to enter the flow of the refrigerant of coolant entrance 11.
In the embodiment of the present invention, preferably, first flow control valve 9 is electric expansion valve.Above-mentionedly to arrange, according to the aperture of the real-time first flow control valve 9 of the temperature of motor, with the refrigerant obtaining temperature lower, motor can be cooled.
As shown in Figures 2 and 3, in the embodiment of the present invention, air-conditioner also comprises second adjustable valve 40.Second adjustable valve 40 is arranged on the pipeline between the outlet of condenser 2 and the entrance of evaporimeter 3.
In the embodiment of the present invention, preferably, second adjustable valve 40 is electric expansion valve.Above-mentionedly to arrange, utilize second adjustable valve 40 can to regulate the flow of the refrigerant entering evaporimeter 3.
In embodiments of the invention, detection control unit also comprises temperature sensor.Temperature sensor is arranged on motor, and controller 4 is electrically connected with temperature sensor.According to the temperature of the motor that temperature sensor detects, different refrigerant sources can be selected to cool motor.When motor temperature is less than or equal to preset temperature, second motor cooling branch road 20 is in open mode, and the first motor cooling branch road 30 is in closed condition, utilizes the second motor cooling branch road 20 that the refrigerant in evaporimeter 3 exit is caused motor, thus motor is cooled, can economize energy; When motor temperature is greater than preset temperature, second motor cooling branch road 20 is in closed condition, first motor cooling branch road 30 place open mode, because the refrigerant temperature of condenser 2 is lower, utilizing the first motor cooling branch road 30 refrigerant of condenser 2 to be caused motor can cool motor fast.
Present invention also offers a kind of motor cooling means of air-conditioner, motor cooling means adopts aforesaid air-conditioner to cool motor, and motor cooling means comprises the following steps:
Detection control unit is utilized to detect the temperature of motor;
The first motor cooling branch road 30 or the second motor cooling branch road 20 pairs of motors are utilized to cool.
Above-mentionedly arrange, user can select different refrigerant sources according to actual needs, namely when motor temperature is less than or equal to preset temperature, utilizes the second motor cooling branch road 20 to be drawn by the refrigerant of evaporimeter 3 and cools motor; When motor temperature is greater than preset temperature, utilizes the first motor cooling branch road 30 to be drawn by the refrigerant of condenser 2 and motor is cooled.
The schematic flow sheet that the air-conditioner that Fig. 2 gives the embodiment of the present invention utilizes the first motor cooling branch road to cool motor.Arrow in Fig. 1 represents the flow direction of refrigerant.As shown in Figure 1, when motor temperature is lower than preset temperature, when air-conditioner starts, first switch valve 5 and second switch valve 6 are all in opening, namely the first refrigerant pipeline 201 and the second refrigerant pipeline 202 are in connected state, 3rd switch valve 7 and the 4th switch valve 8 are all in closed condition (namely the 3rd refrigerant pipeline 301 and the 4th refrigerant pipeline 302 are all in connected state), now the refrigerant in the exit of evaporimeter 3 flow to coolant entrance 11 through the first refrigerant pipeline 201, thus motor is cooled, then, refrigerant flows out through coolant outlet 12 and flow to the air entry of compressor 1 through the second refrigerant pipeline 202, thus raising suction superheat.
The schematic flow sheet that the air-conditioner that Fig. 3 gives the embodiment of the present invention utilizes the second motor cooling branch road to cool motor.Arrow in Fig. 2 represents the flow direction of refrigerant.As shown in Figure 2, when motor temperature is greater than preset temperature, close the first switch valve 5 and second switch valve 6 (namely closing the second motor cooling branch road 20), open the 3rd switch valve 7 and the 4th switch valve 8 (namely opening the first motor cooling branch road 30), now refrigerant causes coolant entrance 11 pairs of motors by the outlet of condenser 2 and cools, due to condenser 2, to export refrigerant temperature lower, can play better condensation.
As shown in Figure 4, in alternate embodiment one of the present invention, if compressor is compound compressor, the refrigerant of discharging from coolant outlet 12 can be connected with the gas supplementing opening 14 of compressor, thus tonifying Qi is carried out to meet the tonifying Qi demand of compressor to compressor, other structures of alternate embodiment one of the present invention are identical with the embodiment of the present invention, at this no longer repeated description.
In the alternate embodiment two that the present invention does not provide, if compressor is compound compressor, can be connected with coolant outlet 12 one end of the second refrigerant pipeline 202 according to actual needs, the other end of the second refrigerant pipeline 202 can be connected with the air entry 13 of compressor 1 and gas supplementing opening 14 respectively.
Above-mentionedly to arrange, utilize the refrigerant of discharging from coolant outlet 12 can meet the tonifying Qi demand of compressor on the one hand, the inspiratory capacity of compressor can be improved on the other hand, improves compression efficiency.
From above description, can find out, the above embodiments of the present invention achieve following technique effect: air-conditioner comprises refrigerant flowing major loop and is successively set on compressor, condenser and the evaporimeter on refrigerant flowing major loop, compressor has coolant entrance and coolant outlet, air-conditioner also comprises the first motor cooling branch road, first motor cooling one end of branch road is connected with the outlet of condenser, the other end of the first motor cooling branch road is connected with coolant entrance, and air-conditioner also comprises: detection control unit, second motor cooling branch road, second motor cooling branch road is arranged between evaporimeter and compressor so that the refrigerant at evaporator outlet place is caused coolant entrance, second motor cooling branch road comprises the first refrigerant pipeline, one end of first refrigerant pipeline 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 cools branch road and the second motor respectively and cools branch road and be electrically connected to control the first motor and cool the break-make that branch road and the second motor cool branch road with the first motor, above-mentionedly to arrange, user can select different branch roads to cool motor as required, utilize detection control unit that the first motor cooling branch road or the second motor cooling branch road can be selected to cool motor, when motor temperature is lower than preset temperature, the first refrigerant pipeline can be utilized the refrigerant of evaporator outlet to be caused the position at the motor place of compressor to cool motor, thus economize energy, avoid waste.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. an air-conditioner, the compressor (1) that described air-conditioner comprises refrigerant flowing major loop (10) and is successively set on described refrigerant flowing major loop (10), condenser (2), evaporimeter (3) and motor, described compressor (1) has coolant entrance (11) and coolant outlet (12), described air-conditioner also comprises the first motor cooling branch road (30), one end of described first motor cooling branch road (30) is connected with the outlet of described condenser (2), the other end of described first motor cooling branch road (30) is connected with described coolant entrance (11), it is characterized in that, described air-conditioner also comprises:
Detection control unit;
Second motor cooling branch road (20), described second motor cooling branch road (20) is arranged between described evaporimeter (3) and described compressor (1) so that the refrigerant in described evaporimeter (3) exit is caused described coolant entrance (11), described second motor cooling branch road (20) comprises the first refrigerant pipeline (201), one end of described first refrigerant pipeline (201) is connected with the outlet of described evaporimeter (3), and the other end of described first refrigerant pipeline (201) is connected with described coolant entrance (11);
Wherein, described detection control unit cools branch road (30) and described second motor respectively and cools branch road (20) and be electrically connected to control described first motor and cool the break-make that branch road (30) and described second motor cool branch road (20) with described first motor.
2. air-conditioner according to claim 1, it is characterized in that, described second motor cooling branch road (20) also comprises the second refrigerant pipeline (202), one end of described second refrigerant pipeline (202) is connected with described coolant outlet (12), the other end of described second refrigerant pipeline (202) is connected with the air entry (13) of described compressor or the other end of described second refrigerant pipeline (202) is connected with the gas supplementing opening (14) of described compressor or the other end of described second refrigerant pipeline (202) is connected with the air entry (13) of described compressor and the gas supplementing opening (14) of described compressor respectively.
3. air-conditioner according to claim 1 and 2, is characterized in that, described detection control unit comprises:
Controller (4);
First switch valve (5), described first switch valve (5) is arranged on described first refrigerant pipeline (201), and described first switch valve (5) is electrically connected the break-make controlling described first refrigerant pipeline (201) with described controller (4).
4. air-conditioner according to claim 2, is characterized in that, described detection control unit also comprises:
Controller (4);
Second switch valve (6), described second switch valve (6) is arranged on described second refrigerant pipeline (202), and described second switch valve (6) is electrically connected the break-make controlling described second refrigerant pipeline (202) with described controller (4).
5. air-conditioner according to claim 1 and 2, is characterized in that, described first motor cooling branch road (30) comprising:
3rd refrigerant pipeline (301), described one end of 3rd refrigerant pipeline (301) and the outlet of described condenser (2), the other end of described 3rd refrigerant pipeline (301) is communicated with described coolant entrance (11);
4th refrigerant pipeline (302), one end of described 4th refrigerant pipeline (302) is communicated with described coolant outlet (12), and the other end of described 4th refrigerant pipeline (302) is communicated with the entrance of described evaporimeter (3).
6. air-conditioner according to claim 5, is characterized in that, described detection control unit also comprises:
Controller (4);
3rd switch valve (7), described 3rd switch valve (7) is arranged on described 3rd refrigerant pipeline (301), and described 3rd switch valve (7) is electrically connected the break-make controlling described 3rd refrigerant pipeline (301) with described controller (4).
7. air-conditioner according to claim 5, is characterized in that, described detection control unit also comprises:
Controller (4);
4th switch valve (8), described 4th switch valve (8) is arranged on described 4th refrigerant pipeline (302), and described 4th switch valve (8) is electrically connected the break-make controlling described 4th refrigerant pipeline (302) with described controller (4).
8. air-conditioner according to claim 5, it is characterized in that, described air-conditioner also comprises first flow control valve (9), and described first flow control valve (9) is arranged on described 3rd refrigerant pipeline (301) to control to enter the flow of the refrigerant of described coolant entrance (11).
9. air-conditioner according to claim 5, it is characterized in that, described air-conditioner also comprises second adjustable valve (40), and described second adjustable valve (40) is arranged on the pipeline between the outlet of described condenser (2) and the entrance of described evaporimeter (3).
10. air-conditioner according to claim 1 and 2, it is characterized in that, described detection control unit also comprises temperature sensor and controller (4), and described temperature sensor is arranged on described motor, and described controller (4) is electrically connected with described temperature sensor.
The motor cooling means of 11. 1 kinds of air-conditioners, is characterized in that, described motor cooling means adopts air-conditioner according to any one of claim 1 to 10 to cool motor, and described motor cooling means comprises the following steps:
Detection control unit is utilized to detect the temperature of motor;
Described first motor cooling branch road (30) or described second motor cooling branch road (20) is utilized to cool motor.
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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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| CN201410775840.5A CN104566852B (en) | 2014-12-15 | 2014-12-15 | Air conditioner and motor cooling method of air conditioner |
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| CN104566852B CN104566852B (en) | 2017-02-22 |
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| CN104883004A (en) * | 2015-06-11 | 2015-09-02 | 广东美的暖通设备有限公司 | Motor cooling structure, air conditioner, and motor cooling method |
| CN104896700A (en) * | 2015-06-11 | 2015-09-09 | 广东美的暖通设备有限公司 | Auxiliary radiating structure, air conditioner and auxiliary radiating method |
| CN104896699A (en) * | 2015-06-11 | 2015-09-09 | 广东美的暖通设备有限公司 | Motor radiating structure, air conditioner and motor radiating method |
| CN104913403A (en) * | 2015-06-11 | 2015-09-16 | 广东美的暖通设备有限公司 | Motor cooling structure, air conditioner and motor cooling method |
| CN104990159A (en) * | 2015-06-11 | 2015-10-21 | 广东美的暖通设备有限公司 | Motor heat dissipation structure, air conditioner and motor heat dissipation method |
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| CN109088513A (en) * | 2018-10-11 | 2018-12-25 | 珠海格力电器股份有限公司 | Motor cooling device |
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