CN204787098U - Motor heat dissipation structure and air conditioner - Google Patents

Abstract

The utility model proposes a motor cooling structure and an air conditioner, wherein the motor cooling structure includes: a motor for driving the air conditioner to work; a closed heat pipe, the evaporation end of the closed heat pipe is arranged on the motor, and the closed condensation end of the heat pipe It is installed at the air supply port and/or return air port of the indoor heat exchanger of the air conditioner. There is a heat dissipation medium in the closed heat pipe. After the heat dissipation medium absorbs the heat of the motor at the evaporation end, it flows to the condensation end through the action of pressure difference, and then connects with the heat dissipation medium. The airflow through the air supply port and/or return air port of the indoor heat exchanger performs heat exchange to condense and dissipate heat, and returns to the evaporation end through capillary force after condensing and dissipating heat. Through this technical solution, the cost of cooling and cooling the motor is saved, and the operating temperature of the motor is effectively reduced, so that the energy efficiency of the motor can be maximized, the user experience is improved, and the cost of the heat dissipation structure is reduced at the same time.

Description

Motor cooling structure and air conditioner

technical field

The utility model relates to the technical field of air conditioners, in particular to a motor cooling structure and an air conditioner.

Background technique

At present, with the improvement of people's living standards and the enhancement of energy-saving awareness, inverter air conditioners have entered the vast number of ordinary families and have been more and more widely used. Existing air conditioners generally all take the method of opening heat sinks in different ways on the surface of the motor, and cooling the motor with the air volume flowing through its surface. Due to its energy saving, flexible control, and easy installation and maintenance, DC variable frequency motors are more and more used in air conditioning systems, which greatly improve the heat exchange effect and efficiency of the air conditioning system.

However, as the indoor and outdoor temperature rises, the motor speed increases and the heat generation increases. If it is in this state for a long time, the working efficiency of the motor will be reduced, and in serious cases, the motor may be burnt out. This forced convection The effect of heat exchange is relatively poor. When the air conditioner is running under some harsh conditions, the heat generated by the motor will continue to rise, which may eventually cause the motor to burn out. Speed and other methods to reduce the heat generated by the motor during operation, which will cause the energy of the motor to not be effectively used, affect the normal operation of the air conditioner, and also reduce the safety and reliability of the air conditioner.

Therefore, how to improve the cooling effect of the motor on the basis of ensuring the efficient operation of the air conditioner has become an urgent problem to be solved at present.

Utility model content

Based on the above problems, the utility model proposes a new technical solution, which can improve the cooling effect of the motor on the basis of ensuring the efficient operation of the air conditioner.

For this reason, an object of the present utility model is to propose a motor cooling structure.

Another object of the present utility model is to provide an air conditioner with the above motor cooling structure.

In order to achieve the above object, the embodiment of the first aspect of the utility model proposes a motor heat dissipation structure for an air conditioner, including: a motor for driving the air conditioner to work; a closed heat pipe, the evaporation of the closed heat pipe end is arranged on the motor, and the condensing end of the closed heat pipe is arranged at the air supply port and/or air return port of the indoor heat exchanger of the air conditioner. There is a heat dissipation medium in the closed heat pipe, wherein the heat dissipation After the medium absorbs the heat of the motor at the evaporating end, it flows to the condensing end through the pressure difference, and then heats up with the airflow passing through the air supply port and/or the return air port of the indoor heat exchanger. Exchange to condense to dissipate heat, and return to the evaporating end through the action of the capillary force after condensing to dissipate heat.

The motor heat dissipation structure of the embodiment of the present invention can cool the motor of the motor heat dissipation structure through heat pipe technology. At the air supply port and/or air return port of the device, the heat dissipation medium has the characteristics of low boiling point and volatile, so that when the heat dissipation medium in the closed heat pipe flows through the evaporation end of the motor, it will absorb the heat emitted by the motor, and in the Under the action of pressure difference, it flows to the condensation end at the air supply port and/or return air port of the indoor heat exchanger by means of the inner wall of the closed heat pipe. The heat dissipation medium exchanges heat with the air flow to realize the condensation and heat dissipation of the heat dissipation medium. After that, the heat dissipation medium flows back to the evaporation end of the motor again, so that the continuous circulation can realize the heat dissipation effect on the motor. Through this technical scheme, the airflow at the air supply port and/or return air port of the indoor heat exchanger is used to condense and cool the heat dissipation medium, which saves the cost of cooling and heat dissipation for the motor, and effectively reduces the operating temperature of the motor. If the temperature is too high, the operating current of the air conditioner is limited or the speed of the fan blade is reduced, so that the energy efficiency of the motor can be maximized and the user experience is improved. At the same time, the heat dissipation structure of the motor uses a heat pipe, the structure is very simple and easy to control, and there is no need to change the circuit structure or control components, reducing the cost of heat dissipation structures.

In addition, the motor cooling structure provided according to the above-mentioned embodiments of the present invention also has the following additional technical features:

According to an embodiment of the present invention, the evaporation end of the closed heat pipe is coiled on the surface of the motor or embedded in the motor.

The closed heat pipe is coiled on the surface of the motor or embedded in the motor, which can increase the contact area between the closed heat pipe and the motor, thereby increasing the heat transfer capacity of the heat dissipation medium and improving the heat dissipation efficiency of the motor. Of course, the closed heat pipe can also be used in other ways. The form adapted to the actual needs is matched with the motor.

According to an embodiment of the present invention, the condensation end of the closed heat pipe is coiled and arranged at the air supply port and/or the air return port of the indoor heat exchanger.

The closed heat pipe is coiled and arranged at the air supply port and/or return air port of the indoor heat exchanger, which can increase the contact area between the closed heat pipe and the air flow at the air supply port and/or return air port, thereby increasing the heat exchange capacity of the heat dissipation medium and facilitating the improvement of the motor performance. For heat dissipation efficiency, of course, the closed heat pipe can also be arranged at the air supply port and/or the air return port in other forms that meet actual needs.

According to an embodiment of the present invention, the closed heat pipe has a tube wall and a capillary core, wherein the capillary core covers the inner surface of the tube wall, and the heat dissipation medium passes through the inside of the tube core.

According to an embodiment of the present invention, the capillary core is a single-layer mesh core, a multi-layer mesh core, a sintered powder core, an axial channel type core or a composite core.

Capillary wicks of closed heat pipes include but are not limited to the following types: single-layer mesh wicks, multi-layer mesh wicks, sintered powder wicks, axial channel wicks, and combined wicks. Among them, for the multi-layer mesh tube core, the more layers, the larger the flow section of the heat dissipation medium and the smaller the resistance; the sintered powder tube core has a higher capillary suction force, which greatly improves the radial thermal resistance and overcomes the problem of the mesh core. Disadvantages of poor process repeatability; axial channel tube core has high axial heat transfer capacity, small radial thermal resistance, basically unchanged performance after bending, but its anti-gravity work ability is poor; combined tube core takes into account Capillary force and permeability, which can obtain high axial heat transfer capacity, divide the tube core into two parts, one part acts as a capillary suction, and the other part acts as a liquid return channel.

According to an embodiment of the present utility model, the cross-sectional shape of the pipe wall is circular or polygonal.

The cross-sectional shape of the pipe wall can be circular or polygonal, and can also be other shapes as required, wherein, the more the number of sides or the more zigzag the shape of the cross-sectional shape of the pipe wall, the smaller the contact area with the cooling medium. The larger the value, the better the heat absorption and heat release effect.

According to an embodiment of the present utility model, the closed heat pipe further has an end cap, and the end cap is used to close the closed heat pipe.

The heat dissipation medium can be injected into the closed heat pipe through the opening of the closed heat pipe, and an end cover can be set at the opening. After the heat dissipation medium is injected, the inside of the closed heat pipe is subjected to negative pressure treatment, and the closed heat pipe is sealed through the end cover to avoid damage caused by the leakage of the heat dissipation medium. Reduce the heat absorption effect of closed heat pipes.

According to an embodiment of the present invention, it further includes: a motor base, arranged under the motor, for placing the motor.

The motor base can be used to place the motor to stabilize the motor and increase the safety of the motor and the air conditioner.

According to an embodiment of the present utility model, the number of the closed heat pipes is one or more.

The number of closed heat pipes can be single, thereby reducing the cost of the air conditioner, and in the case of user needs, in order to ensure the heat dissipation effect of the motor, multiple closed heat pipes can also be set to increase the heat dissipation.

The embodiment of the second aspect of the utility model provides an air conditioner, the air conditioner has the motor cooling structure provided by any embodiment of the first aspect of the utility model, so the air conditioner has the motor cooling structure provided by any of the above embodiments all beneficial effects.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 shows a block diagram of a motor cooling structure according to an embodiment of the present invention;

Fig. 2 shows a block diagram of an air conditioner according to an embodiment of the present invention;

Fig. 3 shows a schematic diagram of a closed heat pipe according to an embodiment of the present invention;

Figure 4 shows a schematic diagram of the assembly of a closed heat pipe and a motor according to an embodiment of the present invention;

Fig. 5 shows a schematic diagram of the motor cooling structure assembled on both sides of the indoor heat exchanger according to an embodiment of the present invention;

Fig. 6 shows a schematic diagram of a motor cooling structure assembled at the air return port of an indoor heat exchanger according to another embodiment of the present invention;

Fig. 7 shows a schematic diagram of a motor cooling structure assembled on both sides of an indoor heat exchanger according to an embodiment of the present invention;

Fig. 8 shows a schematic diagram of a motor cooling structure assembled in an air outlet of an indoor heat exchanger according to another embodiment of the present invention.

Among them, the corresponding relationship between reference signs and component names in Fig. 1 to Fig. 8 is: 1 air conditioner, 11 motor cooling structure, 111 motor, 112 closed heat pipe, 1121 cooling medium, 1122 evaporating end, 1123 condensing end, 12 Indoor heat exchanger, 13 air supply outlets, 14 return air outlets, and 15 fans.

Detailed ways

In order to more clearly understand the above purpose, features and advantages of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, a lot of specific details have been set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways different from those described here, therefore, the protection scope of the utility model is not limited by the following limitations of the specific embodiments disclosed.

Fig. 1 shows a block diagram of a heat dissipation structure of a motor according to an embodiment of the present invention.

As shown in Figure 1, according to one embodiment of the present utility model, a motor heat dissipation structure 11 is proposed, which is used for an air conditioner, including: a motor 111, which is used to drive the air conditioner; 1122 is arranged on the motor 111, and the condensation end 1123 of the closed heat pipe 112 is arranged at the air supply port 13 and/or the air return port 14 of the indoor heat exchanger of the air conditioner. There is a heat dissipation medium 1121 in the closed heat pipe 112, wherein the heat dissipation medium 1121 is After absorbing the heat from the motor 111, the evaporating end 1122 flows to the condensing end 1123 through the pressure difference, and then exchanges heat with the airflow passing through the air supply port 13 and/or return air port 14 of the indoor heat exchanger to condense and dissipate heat. Then return to the evaporation end 1122 by capillary force.

The motor heat dissipation structure 11 of the embodiment of the present utility model can cool the motor 111 of the motor heat dissipation structure 11 through heat pipe technology, specifically, the two ends of the closed heat pipe 112 with the heat dissipation medium 1121 are respectively arranged on the air conditioner. At the air supply port 13 and/or return air port 14 of the motor 111 and the indoor heat exchanger, the heat dissipation medium 1121 has a low boiling point and is volatile, so that the heat dissipation medium 1121 in the closed heat pipe 112 evaporates when flowing through the motor 111. At the end 1122, it will absorb the heat dissipated by the motor 111, and flow to the condensation end 1123 at the gas-liquid separator by means of the inner wall of the closed heat pipe 112 under the action of the pressure difference, because the air supply port 13 and/or return air port 14 of the indoor heat exchanger There is an airflow passing through, so that the heat-absorbing heat dissipation medium 1121 exchanges heat with the airflow to realize the condensation and heat dissipation of the heat dissipation medium 1121. After that, the heat dissipation medium 1121 flows back to the evaporation end 1122 of the motor 111 again, and the cycle continues like this. The cooling effect on the motor 111 can be realized. Through this technical solution, the airflow at the air supply port 13 and/or return air port 14 of the indoor heat exchanger is used to condense and cool the cooling medium 1121, which saves the cost of cooling and cooling the motor 111, and effectively reduces the working temperature of the motor 111 , so that it is not necessary to limit the operating current of the air conditioner or reduce the speed of the fan blades due to the high temperature of the motor 111, so that the energy efficiency of the motor 111 can be maximized and the user experience is improved. It is very simple and easy to control, without changing the circuit structure or control components, and reduces the cost of the heat dissipation structure.

According to an embodiment of the present invention, the evaporation end 1122 of the closed heat pipe 112 is coiled on the surface of the motor 111 or embedded in the inside of the motor 111 .

The closed heat pipe 112 is coiled on the surface of the motor 111 or embedded in the interior of the motor 111, which can increase the contact area between the closed heat pipe 112 and the motor 111, thereby increasing the heat transfer capacity of the cooling medium 1121, and facilitating the improvement of the heat dissipation efficiency of the motor 111. Of course The closed heat pipe 112 can also cooperate with the motor 111 in other forms that meet actual needs.

According to an embodiment of the present invention, the condensation end 1123 of the closed heat pipe 112 is coiled and arranged at the air supply port 13 and/or the air return port 14 of the indoor heat exchanger.

The closed heat pipe 112 is coiled and arranged at the air supply port 13 and/or the air return port 14 of the indoor heat exchanger, which can increase the contact area between the closed heat pipe 112 and the air flow at the air supply port 13 and/or the return air port 14, thereby improving the exchange rate of the cooling medium 1121. The heat is convenient to improve the heat dissipation efficiency of the motor 111. Of course, the closed heat pipe 112 can also be arranged at the air supply port 13 and/or the air return port 14 in other forms that meet actual needs.

According to an embodiment of the present invention, the closed heat pipe 112 has a tube wall and a capillary core, wherein the capillary core covers the inner surface of the tube wall, and the cooling medium 1121 passes through the tube core.

According to an embodiment of the present invention, the capillary tube core is a single-layer net tube core, a multi-layer net tube core, a sintered powder tube core, an axial channel type tube core or a combined tube core.

The capillary wicks of the enclosed heat pipe 112 include but are not limited to the following types: single-layer mesh wicks, multi-layer mesh wicks, sintered powder wicks, axial channel wicks, and combined wicks. Among them, for the multi-layer net tube core, the more layers, the larger the flow section of the cooling medium 1121, and the smaller the resistance; the sintered powder tube core has a higher capillary suction force, which greatly improves the radial thermal resistance and overcomes the grid The disadvantage of poor repeatability of the core process; the axial channel type tube core has a high axial heat transfer capacity, the radial thermal resistance is small, and the performance after bending is basically unchanged, but its anti-gravity work ability is poor; the combined tube core Taking into account both capillary force and permeability, high axial heat transfer capacity can be obtained. It divides the tube core into two parts, one part acts as capillary suction, and the other part acts as a liquid return channel.

According to an embodiment of the present invention, the cross-sectional shape of the tube wall is circular or polygonal.

The cross-sectional shape of the pipe wall can be circular or polygonal, and can also be other shapes as required. The larger it is, the better the heat absorption and heat release effect.

According to an embodiment of the present invention, the closed heat pipe 112 also has an end cap, which is used to close the closed heat pipe 112 .

The heat dissipation medium 1121 can be injected into the closed heat pipe 112 through the opening of the closed heat pipe 112, and an end cap can be arranged at the opening. After injecting the heat dissipation medium 1121, the inside of the closed heat pipe 112 is subjected to negative pressure treatment, and the closed heat pipe 112 is sealed through the end cover. Avoid reducing the heat absorption effect of the closed heat pipe 112 due to the leakage of the cooling medium 1121 .

According to an embodiment of the present invention, it further includes: a motor 111 base, which is arranged under the motor 111 and used for placing the motor 111 .

The base of the motor 111 can be used to place the motor 111 to make the motor 111 stable and increase the safety of the motor 111 and the air conditioner.

According to an embodiment of the present invention, the number of closed heat pipes 112 is one or more.

The number of closed heat pipes 112 can be single, thereby reducing the cost of the air conditioner, and in the case of user needs, in order to ensure the heat dissipation effect of the motor 111, multiple closed heat pipes 112 can also be provided to increase heat dissipation.

Fig. 2 shows a block diagram of an air conditioner according to an embodiment of the present invention.

As shown in FIG. 2 , the air conditioner 1 according to an embodiment of the present invention has the motor heat dissipation structure 11 shown in FIG. 1 , so the air conditioner 1 has all the beneficial effects of the motor heat dissipation structure 11 , which will not be repeated here.

Fig. 3 shows a schematic diagram of a closed heat pipe according to an embodiment of the present invention, and Fig. 4 shows a schematic diagram of an assembly of a closed heat pipe and a motor according to an embodiment of the present invention.

As shown in Figure 3 and Figure 4, the heat dissipation structure 11 of the motor of the present invention uses heat pipe technology to fix the motor on the motor base. The heat pipe is a closed system. When heat is introduced from the evaporation end 1122 (motor base), The heat dissipation medium in the capillary core of the closed heat pipe is heated and evaporated, flows to the condensation end 1123 under the action of pressure difference to dissipate heat and condenses into a liquid working medium, and flows back to the evaporation end under the action of capillary force, so that the cycle continues, and the heat is released from the evaporation end It is passed to the condensation end to realize the heat dissipation of electrical components.

Wherein, the motor 111 is connected to the fan 15 for driving the fan 15 to supply air.

Fig. 5 shows a schematic diagram of the motor cooling structure assembled on both sides of the indoor heat exchanger according to an embodiment of the present invention.

As shown in Figure 5, the arrow indicates the wind direction of the air return port 14, and the evaporation end 1122 of the motor heat dissipation structure 11 is coiled or embedded on the motor, the motor and the condensation end 1123 are located on both sides of the indoor heat exchanger, and the motor is fixed in the indoor heat exchange At both ends of the device 12, the condensing end 1123 is placed at the air return port 14. When heat is introduced from the motor, the cooling medium in the capillary core absorbs the heat of the motor and evaporates into a gaseous state, flows to the condensation end 1123 under the action of pressure difference, exchanges heat with the return air passing through its surface, releases heat and condenses into a liquid state, and flow back to the hot end under the action of capillary force, so that the continuous circulation, the heat is transferred from the evaporating end 1122 to the condensing end 1123, realizing the heat dissipation of the motor.

Fig. 6 shows a schematic diagram of a motor cooling structure assembled at the air return port of an indoor heat exchanger according to another embodiment of the present invention.

As shown in Figure 6, the arrow indicates the wind direction of the air return port 14, the evaporation end 1122 of the motor cooling structure 11 is coiled or embedded on the motor, the motor and the condensation end 1123 are located on the same side of the indoor heat exchanger 12, and the condensation end 1123 is placed on At the air return port 14, the motor is fixed at both ends of the indoor heat exchanger 12 and placed at the air return port 14. When heat is introduced from the motor, the cooling medium in the capillary core absorbs the heat of the motor and evaporates into a gaseous state. Under the action, it flows to the condensing end 1123, exchanges heat with the return air passing through its surface, releases heat and condenses into a liquid state, and flows back to the hot end under the action of capillary force, so that the cycle continues, and the heat is transferred from the evaporating end 1122 to the condensing end 1123, the heat dissipation of the motor is realized.

Fig. 7 shows a schematic diagram of the motor cooling structure assembled on both sides of the indoor heat exchanger according to an embodiment of the present invention.

As shown in Figure 7, the arrow indicates the wind direction of the air outlet 13, the evaporation end 1122 of the motor cooling structure 11 is coiled or embedded on the motor, the motor and the condensation end 1123 are located on both sides of the indoor heat exchanger 12, and the motor is fixed on the indoor heat exchanger. At both ends of the heater 12, the condensing end 1123 is placed at the air supply port 13. When the heat is introduced from the motor, the cooling medium in the capillary core absorbs the heat of the motor and evaporates into a gaseous state, and flows to the condensing end 1123 under the action of the pressure difference. It exchanges heat with the return air passing through its surface, releases heat and condenses into a liquid state, and flows back to the hot end under the action of capillary force. In this continuous cycle, the heat is transferred from the evaporating end 1122 to the condensing end 1123, realizing the protection of the motor Heat dissipation.

Fig. 8 shows a schematic diagram of a motor cooling structure assembled in an air outlet of an indoor heat exchanger according to another embodiment of the present invention.

As shown in Figure 8, the arrow indicates the wind direction of the air outlet 13, and the evaporating end 1122 of the motor cooling structure 11 is coiled or embedded on the motor, the motor and the evaporating end 1122 are located on the same side of the indoor heat exchanger, and the condensing end 1123 is placed on the air delivery port. At the air outlet 13, the motor is fixed at both ends of the indoor heat exchanger 12 and placed at the air supply outlet 13. When the heat is introduced from the motor, the cooling medium in the capillary core absorbs the heat of the motor and evaporates into a gaseous state. It flows down to the condensing end 1123, exchanges heat with the return air passing through its surface, releases heat and condenses into a liquid state, and flows back to the hot end under the action of capillary force, so that the cycle continues, and the heat is transferred from the evaporating end 1122 to the condensing end 1123 , to achieve heat dissipation of the motor.

The technical solution of the utility model has been described in detail above in conjunction with the accompanying drawings. Through the technical solution of the utility model, the cost of cooling and cooling the motor is saved, and the working temperature of the motor is effectively reduced, so that the energy efficiency of the motor is maximized. The user experience is improved, and at the same time, the cost of the heat dissipation structure is reduced.

In the present utility model, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; the term "plurality" means two or more; the term "connected ", "connection" and so on should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the description of this specification, descriptions of the terms "one embodiment", "another embodiment" and the like mean that specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one implementation of the present invention. example or examples. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. a motor radiating structure, for air-conditioner, is characterized in that, comprising:

Motor, for driving described air-conditioner work;

Close heat pipe, the evaporation ends of described closed heat pipe is arranged on described motor, the condensation end of described closed heat pipe is arranged on air outlet and/or the return air inlet place of the indoor heat exchanger of described air-conditioner, in described closed heat pipe, there is heat radiation matchmaker, wherein, described heat radiation matchmaker absorbs the heat of described motor at described evaporation ends after, described condensation end is flow to through differential pressure action, again with carry out heat exchange by the described air outlet of described indoor heat exchanger and/or the air-flow of described return air inlet and dispel the heat with condensation, and return described evaporation ends by capillary force effect after condensation heat radiation.

2. motor radiating structure according to claim 1, is characterized in that, the described evaporation ends coiling of described closed heat pipe is arranged on the surface of described motor or is embedded into the inside of described motor.

3. motor radiating structure according to claim 2, is characterized in that, the described condensation end coiling of described closed heat pipe is arranged on the described air outlet of described indoor heat exchanger and/or described return air inlet place.

4. motor radiating structure according to claim 3, is characterized in that, described closed heat pipe has tube wall and capillary core, and wherein, described capillary core covers the inner surface of described tube wall, and described heat radiation matchmaker passes through from described die internal.

5. motor radiating structure according to claim 4, is characterized in that, described capillary core is monolayer net tube core, Multilayer Network tube core, sintered powder tube core, axial slot formula tube core or combined die.

6. motor radiating structure according to claim 5, is characterized in that, the cross sectional shape of described tube wall is circular or polygon.

7. motor radiating structure according to claim 6, is characterized in that, described closed heat pipe also has end cap, and described end cap is used for closing described closed heat pipe.

8. motor radiating structure according to claim 7, is characterized in that, also comprises:

Motor base, is arranged on below described motor, for placing described motor.

9. motor radiating structure according to any one of claim 1 to 8, is characterized in that, the quantity of described closed heat pipe is one or more.

10. an air-conditioner, is characterized in that, comprises motor radiating structure as claimed in any one of claims 1-9 wherein.