CN213300252U

CN213300252U - Air conditioner and indoor unit thereof

Info

Publication number: CN213300252U
Application number: CN202022007272.8U
Authority: CN
Inventors: 李锡东; 曹永平; 王宏翔
Original assignee: Hisense Shandong Air Conditioning Co Ltd
Current assignee: Hisense Shandong Air Conditioning Co Ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-05-28
Anticipated expiration: 2030-09-14

Abstract

The utility model discloses an air conditioner and indoor set thereof, indoor set includes: casing, fan, motor, electrical apparatus box. Be equipped with the wind channel in the casing, the fan setting is in the one end in wind channel, the motor is connected with the fan, the electrical apparatus box includes: box body, indoor set controller, radiator, the box body has the opening, indoor set controller includes the circuit board and locates the IPM module on the circuit board, the IPM module with the circuit board electricity is connected, the radiator with the IPM module corresponds in the direction of perpendicular to circuit board, just the radiator with the IPM module is fixed, some of radiator is located in the box body and another part is followed the opening stretches out outside the box body. Therefore, one end of the electric appliance box is provided with the opening, so that part of the radiator extends out of the electric appliance box, and the radiator radiates heat through the air duct outside the electric appliance box, so that the temperature of the IPM module is reduced, and the normal work of the indoor unit controller is maintained.

Description

Air conditioner and indoor unit thereof

Technical Field

The utility model belongs to the technical field of the air conditioner and specifically relates to an indoor set of air conditioner and have its air conditioner is related to.

Background

The indoor air conditioner motor mainly adopts built-in drive at present, and motor drive board places inside the motor promptly, and power device places inside the motor, and the heat dispels the heat through motor body shell. In order to reduce the cost, a built-in motor driving board is eliminated, and the motor driving board is combined to an internal machine controller to form a driving control integrated controller of the internal machine.

However, because the internal machine controller needs to be designed to be fireproof, the whole controller is wrapped by metal or by BNC materials, and air is not circulated. The original controller is not provided with devices with large heat generation quantity, and the newly designed drive control integrated controller is provided with power devices driven by a motor, so that the heat generation quantity is large and heat dissipation is needed. If no measures are taken, the heating of the power device causes the temperature in the fireproof electrical box to rise, and meanwhile, the temperature of the power device driven by the motor rises, so that the temperature of the power device exceeds the temperature of the working environment of the device, and therefore, the power device can not be used any more.

It is therefore desirable to design an indoor unit controller that is both fire resistant and that dissipates heat faster.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide an indoor unit of an air conditioner and an air conditioner having the same.

According to the utility model discloses indoor set of air conditioner of first aspect embodiment includes: casing, fan, motor, electrical apparatus box.

Be equipped with the wind channel in the casing, the fan setting is in the one end in wind channel, the motor is connected with the fan, the electrical apparatus box includes: box body, indoor set controller, radiator, the box body has the opening, indoor set controller includes the circuit board and locates the IPM module on the circuit board, the IPM module with the circuit board electricity is connected, the radiator with the IPM module corresponds in the direction of perpendicular to circuit board, just the radiator with the IPM module is fixed, some of radiator is located in the box body and another part is followed the opening stretches out outside the box body.

Therefore, one end of the electric appliance box is provided with the opening, so that one part of the radiator extends out of the electric appliance box, and the heat is dissipated through the air duct outside the electric appliance box, so that the heat loss of the radiator is accelerated, the temperature of the IPM module is further reduced, and the normal work of the indoor unit controller is maintained. When a load accident occurs to the circuit or the IPM module is not used properly, the IPM module is protected from being damaged, the position of a fault can be detected in time, and the efficiency of repair work is improved.

In some embodiments, the heat sink plugs the opening.

In some embodiments, the heat spreader is aluminum or copper.

In some embodiments, the height of the heat sink extending out of the opening is 1/4-1/2 of the total heat sink height.

In some embodiments, the heat sink is disposed toward the motor.

In some embodiments, the case of the electrical box is perpendicular to the air duct.

In some embodiments, the cartridge includes a metal outer shell and a plastic inner shell disposed within the metal outer shell; or the box body is made of refractory materials.

In some embodiments, the heat sink is a finned heat sink.

According to the utility model discloses the air conditioner of second aspect embodiment includes the indoor set of above-mentioned embodiment.

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

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of an indoor unit according to an embodiment of the present invention.

Fig. 2 is a schematic view of an electrical box of an indoor unit according to an embodiment of the present invention.

Fig. 3 is an enlarged schematic view of the appliance box of fig. 1.

Fig. 4 is a distribution schematic diagram of the internal components of the electrical box of the indoor unit according to the embodiment of the present invention.

Reference numerals:

an indoor unit 100;

a housing 10; an air duct 11;

a motor 30;

an electrical box 40; a case body 41; an opening 411; an indoor unit controller 42; a circuit board 421; an IPM module 422; a capacitor 423; the inductor coil 424; a socket 425; a heat sink 43.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

An indoor unit 100 of an air conditioner and an air conditioner having the same according to embodiments of the present invention will be described with reference to fig. 1 to 4.

According to the utility model discloses indoor set 100 of air conditioner of first aspect embodiment includes: a housing 10, a fan (not shown), a motor 30, and an electrical box 40.

As shown in fig. 1, an air duct 11 is provided in the casing 10, a fan is provided at one end of the air duct 11, the motor 30 is connected to the fan, and the electrical box 40 includes: the indoor unit controller 42 comprises a circuit board 421 and an IPM module 422 arranged on the circuit board 421, the IPM module 422 is electrically connected with the circuit board 421, the heat sink 43 corresponds to the IPM module 422 in a direction perpendicular to the circuit board 421, the heat sink 43 is fixed with the IPM module 422, one part of the heat sink 43 is positioned in the box 41, and the other part of the heat sink 43 extends out of the box 41 from the opening 411.

That is, the casing 10 of the indoor unit 100 has the air duct 11 therein, and a fan connected to the motor 30 is provided at one end of the air duct 11, and the fan is rotated by the driving of the motor 30. The case 41 of the electrical box 40 has an opening 411 through which a part of the heat sink 43 can extend out of the case 41, another part of the heat sink 43 can be located in the case 41, and the air blown by the fan is blown to the heat sink 43 with a part exposed out of the electrical box 40 through the air duct 11. The heat sink 43 and the IPM module 422 on the circuit board 421 are disposed opposite to each other in a direction perpendicular to the circuit board 421, and are fixedly connected to each other. The IPM module 422 is electrically connected to the circuit board 421, for example, pins of the IPM module 422 are soldered to corresponding positions reserved on the circuit board 421, and the circuit board 421 may further include electronic components such as a capacitor 423, an inductor 424, and a socket 425 besides the IPM module 422.

It should be noted that the IPM Module 422(Intelligent Power Module) is an Intelligent Power Module, which not only integrates a Power switch device and a driving circuit, but also incorporates a fault detection circuit for detecting overvoltage, overcurrent, overheat, etc., and can send a detection signal to a CPU or a DSP for interrupt processing. The high-speed low-power-consumption chip-on-chip protection circuit is composed of a high-speed low-power-consumption chip, an optimized gate-level driving circuit and a quick protection circuit. And an integrated structure with a built-in current sensor and a driving circuit wins a bigger and bigger market due to high reliability and convenient use, and is particularly suitable for a frequency converter of the driving motor 30 and various inverter power supplies.

Therefore, an opening 411 is formed in one end of the electrical box 40, one part of the radiator 43 is opposite to the IPM module 422 in the electrical box 40 to cool the IPM module 422, and the other part of the radiator 43 extends out of the electrical box 40 to cool and exchange heat with the air duct 11 in the indoor unit 100, which is located outside the electrical box 40, to the radiator 43, so that heat dissipation of the radiator 43 is accelerated, the temperature of the IPM module 422 is reduced, and normal operation of the indoor unit controller 42 is maintained. And the arrangement of the radiator 43 can not only protect the IPM module 422 from being damaged when the IPM module 422 has a load accident or is improperly used in a circuit, but also detect the position of a fault in time, thereby increasing the efficiency of repair work. Meanwhile, the radiator 43 can also shield the opening 411 of the electrical box 40 to a certain extent, so that the electrical box 40 is prevented from being fired.

In the embodiment shown in fig. 2 and 3, the heat sink 43 is blocked in the opening 411. From this, radiator 43 not only passes from opening 411, can just completely block up opening 411 with opening 411 adaptation moreover, has increased the leakproofness of electrical apparatus box 40 opening 411 department, and radiator 43 can have less gap with opening 411 border to smooth and easy nature when satisfying the installation of radiator 43 can not influence electrical apparatus box 40's fire prevention again.

In some embodiments, the heat sink 43 is made of aluminum or copper, which has good heat dissipation properties, good thermal conductivity, and fire resistance. Therefore, when the components of the circuit board 421 generate a large amount of heat, the heat radiator 43 can conduct heat rapidly and accelerate heat dissipation, thereby improving the heat dissipation efficiency and avoiding the influence on the work of other devices due to the fire caused by overhigh temperature.

In some examples, the height of the heat sink 43 extending out of the opening 411 is 1/4-1/2 of the entire height of the heat sink 43. Therefore, by controlling the height of the radiator 43 extending out of the opening 411, the stability of the radiator 43 at the opening 411 is increased, and meanwhile, the radiating area is increased to the maximum extent, and the radiating speed is increased.

In the embodiment shown in fig. 1, the radiator 43 is disposed toward the motor 30, making the structural arrangement of the indoor unit 100 more compact.

In a particular embodiment, the case 41 of the electronics box 40 is perpendicular to the air chute 11. This arrangement enables heat generated inside the electric box 40 to be directly dispersed in the air duct 11 to be blown away, and also enables the indoor unit 100 to be more compactly arranged.

In some embodiments, the cassette 41 includes a metal outer shell and a plastic inner shell disposed within the metal outer shell.

Therefore, the inner shell of the box body 41 is made of plastic, has insulation and flame retardance, and can reduce the risk of electric leakage caused by internal circuit failure; the shell is made of metal materials, and the metal materials have fire resistance and high deformation resistance, so that the metal shell can effectively avoid the influence of internal fire on external devices of the box body 41 in order to avoid fire caused by overhigh temperature.

Of course, the present invention is not limited thereto, and in other embodiments, the box 41 may be made of a refractory material. Therefore, the box body 41 is directly molded by adopting refractory materials or integrally processed in other modes, the manufacturing process is simple, and the processing and the production are convenient.

In some embodiments, the heat sink 43 is a finned heat sink. As shown in fig. 4, the reason is that the metal heat and the heat dissipation efficiency of the fin radiator are higher than those of the common cast iron radiator, the application range is wide, the pressure-bearing capacity is high, and the volume is small. This makes the indoor unit 100 more suitable for internal installation, saves internal space, and improves the compactness of the internal structure.

The air conditioner according to the second aspect of the present invention includes the indoor unit 100 described above.

The indoor unit controller 42 provided in the electric box 40 of the indoor unit 100 is likely to affect the operation of the controller due to an excessively high temperature during operation, and in order to avoid an influence of a fire on an external device due to a high temperature, the electric box 40 needs to be installed in a fireproof manner, and in addition, due to electronic components in the electric box 40, particularly, the IPM module 422 generates a large amount of heat, and the IPM module needs to be cooled and radiated separately, and the heat is radiated by installing the radiator 43 in the opening 411 of the electric box 40. A part of the radiator 43 protrudes outside the casing 41 through the opening 411 of the casing 41, and the indoor unit 100 removes heat from the radiator 43 by air blown by the fan.

Since the case 41 is made of a fireproof material or a metal material, and the opening 411 of the case 41 is substantially closed by the heat sink 43 made of metal, the fireproof performance of the electrical box 40 and the heat dissipation requirements of the internal components can be both satisfied.

The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. In the description of the present invention, "a plurality" means two or more. In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween. In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An indoor unit of an air conditioner, comprising;

the air duct is arranged in the machine shell;

the fan is arranged at one end of the air channel;

a motor connected to the fan;

an electrical box, the electrical box comprising:

a cartridge body having an opening;

the indoor unit controller comprises a circuit board and an IPM module arranged on the circuit board, and the IPM module is electrically connected with the circuit board;

the radiator corresponds to the IPM module in the direction perpendicular to the circuit board, the radiator is fixed to the IPM module, one part of the radiator is located in the box body, and the other part of the radiator extends out of the box body from the opening.

2. The indoor unit according to claim 1, wherein the radiator is blocked in the opening.

3. The indoor unit of claim 2, wherein the heat sink is aluminum or copper.

4. The indoor unit of any one of claims 1 to 3, wherein the height of the radiator extending out of the opening is 1/4 to 1/2 of the entire radiator height.

5. The indoor unit according to any one of claims 1 to 3, wherein the heat sink is disposed toward the motor.

6. The indoor unit of claim 5, wherein the casing of the appliance casing is perpendicular to the duct.

7. The indoor unit according to any one of claims 1 to 3, wherein the casing includes a metal outer casing and a plastic inner casing provided inside the metal outer casing; or the box body is made of refractory materials.

8. The indoor unit according to any one of claims 1 to 3, wherein the heat sink is a fin heat sink.

9. An air conditioner characterized by comprising the indoor unit according to any one of claims 1 to 8.