CN219919280U - Controller and air conditioner - Google Patents

Abstract

The utility model discloses a controller and an air conditioner, wherein the controller comprises: circuit substrate and arrange the components and parts collection in circuit substrate front, components and parts collection includes: a power input loop arranged near the edge of the circuit substrate; an integrated power module electrically coupled to the power input loop; the power plug-in device is electrically coupled with the integrated power module to realize power control; and the integrated power module and the power plug-in devices are uniformly distributed on one side of the power input loop, which is far away from the edge of the circuit substrate. Therefore, the power input loop is arranged near the edge of the circuit substrate, and the integrated power module and the power plug-in devices are uniformly distributed on one side of the power input loop far away from the edge of the circuit substrate, so that current paths among the power input loop, the integrated power module and the power plug-in devices are not crossed with each other, signal crosstalk is avoided, EMC performance of the controller is improved, and reliability and stability of the controller are ensured.

Description

Controller and air conditioner

Technical Field

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

Background

At present, with the fine development of circuit components, the variable frequency air conditioner electric control system gradually deviates to integration, for example, a control device and a power device are all arranged on the same air conditioner controller, however, the disadvantage in the related art is that as the air conditioner function requirement increases, components required for integration also increase, the complexity of the circuit layout design of the controller increases, and the improper circuit layout even affects the EMC (Electromagnetic Compatibility ) performance, so that the stability and reliability of the controller are reduced.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, a first object of the present utility model is to provide a controller, in which the power input loop is disposed near the edge of the circuit substrate, and the integrated power module and the power plug-in devices are uniformly disposed on one side of the power input loop far from the edge of the circuit substrate, so that the current paths of the power input loop, the integrated power module and the power plug-in devices are not crossed with each other, signal crosstalk is avoided, and thus EMC performance of the controller is improved, and reliability and stability of the controller are ensured.

A second object of the present utility model is to propose an air conditioner.

To achieve the above object, a controller according to a first aspect of the present utility model includes a circuit substrate and a component set disposed on a front surface of the circuit substrate, where the component set includes: a power input loop arranged near the edge of the circuit substrate; an integrated power module electrically coupled to the power input loop; the power plug-in device is electrically coupled with the integrated power module to realize power control; and the integrated power module and the power plug-in devices are uniformly distributed on one side of the power input loop, which is far away from the edge of the circuit substrate.

According to the controller disclosed by the utility model, the power input loop is arranged close to the edge of the circuit substrate, and the integrated power modules and the power plug-in devices are uniformly distributed on one side of the power input loop, which is far away from the edge of the circuit substrate, so that current paths among the power input loop, the integrated power modules and the power plug-in devices are not crossed with each other, signal crosstalk is avoided, the EMC performance of the controller is improved, and the reliability and the stability of the controller are ensured.

In addition, the controller according to the present utility model may further have the following additional technical features:

in some examples, the power plug-in device includes: the power correction inductor is electrically coupled with the integrated power module to realize power correction; and the direct current bus capacitor is electrically coupled with the integrated power module to realize direct current output.

In some examples, the power input loop is disposed along a right side and a lower side of the circuit substrate.

In some examples, the power correction inductance is disposed on a side of the dc bus capacitance away from a lower side of the circuit substrate, the integrated power module has a first port disposed on a side of the second port away from the lower side of the circuit substrate, the first port electrically coupled with the rate correction inductance, and a second port electrically coupled with the dc bus capacitance.

In some examples, the controller further comprises: and the cooling device is configured to radiate heat of the integrated power module.

In some examples, the cooling device is further configured to dissipate heat from the power plug-in device.

In some examples, the set of components further includes: a microcontroller unit electrically coupled to the integrated power module, the microcontroller unit disposed proximate an edge of the circuit substrate and located opposite the power input loop; and a power conversion circuit electrically coupled to the power input loop and the microcontroller unit, respectively.

In some examples, the set of components further includes a current voltage detection circuit, a communication circuit, an electrical heating circuit, a sensor circuit, a four-way valve circuit, and an electronic expansion valve circuit electrically coupled to the microcontroller unit.

In some examples, the power input loop includes a power input interface, a lightning protection loop, a filtering loop, and an anti-inrush current loop electrically coupled with the integrated power module in sequence along a current direction.

In some examples, the integrated power module is integrated with a compressor power module and a fan power module; and the component set further comprises a first motor interface and a second motor interface, wherein the first motor interface is electrically coupled with the compressor power module, and the second motor interface is electrically coupled with the fan power module.

To achieve the above object, an air conditioner according to a second aspect of the present utility model includes a compressor, a blower, and a controller according to the foregoing utility model, the controller being configured to control the compressor and the blower.

According to the air conditioner disclosed by the utility model, the power input loop on the controller is arranged close to the edge of the circuit substrate, and the integrated power module and the power plug-in devices are uniformly distributed on one side of the power input loop away from the edge of the circuit substrate, so that current paths among the power input loop, the integrated power module and the power plug-in devices are not crossed with each other, signal crosstalk is avoided, the EMC performance of the controller is improved, and the reliability and stability of the controller are ensured.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

FIG. 1 is a schematic diagram of a controller according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of an integrated power module according to an embodiment of the present utility model;

fig. 3 is an equivalent circuit diagram of a power control circuit according to an embodiment of the present utility model;

FIG. 4 is a second schematic diagram of a controller according to an embodiment of the present utility model;

fig. 5 is a schematic layout diagram of a controller according to an embodiment of the present utility model.

Reference numerals:

the circuit board 100, the power input circuit 210, the power input interface 211, the lightning protection circuit 212, the filter circuit 213, the inrush current protection circuit 214, the integrated power module 220, the first driving chip 221, the second driving chip 222, the compressor driving circuit 223, the fan driving circuit 224, the rectifier bridge 225, the power correction circuit 226, the detection circuit 227, the power correction inductor 231, the dc bus capacitor 232, the microcontroller unit 240, the power conversion circuit 250, the first motor interface 260, the second motor interface 270, the cooling device 300, the current voltage detection circuit 910, the communication circuit 920, the electric heating circuit 930, the sensor circuit 940, the four-way valve circuit 950, and the electronic expansion valve circuit 960.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

A controller and an air conditioner according to an embodiment of the present utility model are described below with reference to the accompanying drawings.

Specifically, in some embodiments of the present utility model, as shown in fig. 1, the controller includes: the circuit board 100 and the component set 200 arranged on the front surface of the circuit board 100, the component set 200 includes: a power input loop 210, an integrated power module 220, and a power plug-in device 230.

Wherein the power input loop 210 is disposed near an edge of the circuit substrate 100; the integrated power module 220 is electrically coupled to the power input loop 210; the power plug-in device 230 is electrically coupled with the integrated power module 220 to realize power control; and, the integrated power module 220 and the power plug-in device 230 are disposed on a side of the power input circuit 210 away from the edge of the circuit substrate.

It will be appreciated that in some embodiments, the controller may be applied to an air conditioner, for example, the controller may be used to control electronic components such as a compressor, a fan, an electronic expansion valve, a four-way valve, and a heater in the air conditioner, and in addition, the controller may be applied to other devices, which are not specifically limited in this embodiment.

It should be noted that the front surface of the circuit substrate 100 is a main printed surface, that is, the front surface of the circuit substrate 100 is provided with other elements for implementing the control function, such as a chip, an interface unit, or other circuits, in addition to the power plug-in device 230.

The integrated power module 220 is used for power control of the controlled electronic components, which can control the operating power of the electronic components. Taking air conditioning as an example, the integrated power module 220 may perform power control on the compressor and the fan.

It is understood that the power input circuit 210, the integrated power module 220 and the power plug-in device 230 may generate current signal crosstalk during operation, so in this embodiment of the present utility model, by arranging the power input circuit 210 close to the edge of the circuit substrate 100 and uniformly arranging the integrated power module 220 and the power plug-in device 230 on the side of the power input circuit 210 far from the edge of the circuit substrate, the current path between the integrated power module 220 and the power plug-in device 230 is located on the side of the power input circuit 210 far from the edge of the circuit substrate, so that the current paths between the integrated power module and the power plug-in device and the power input circuit are not intersected, signal crosstalk is avoided, and thus EMC performance of the controller is improved, and reliability and stability of the controller are ensured.

Further, in some embodiments of the present utility model, power plug-in device 230 includes: a power correction inductance 231 and a dc bus capacitance 232.

Wherein the power correction inductor 231 is electrically coupled with the integrated power module 220 to realize power correction; and, the dc bus capacitor 232 is electrically coupled to the integrated power module 220 to achieve dc output.

It is understood that in some embodiments, since the power correction inductor 231 and the dc bus capacitor 232 need to be larger than other power components, the power correction inductor 231 may be electrically coupled to the integrated power module 220 in an on-hook manner to achieve power correction, and the dc bus capacitor 232 may be electrically coupled to the integrated power module 220 in an on-hook manner to achieve dc output.

Specifically, referring to fig. 2 and 3, as an example, the integrated power module 220 may be integrated with a first driving chip 221, a second driving chip 222, a compressor driving circuit 223, a blower driving circuit 224, a rectifier bridge 224, a power correction circuit 226, and a detection circuit 227.

In fig. 3, the inductance L1 is a power correction inductance 231, and the electrolytic capacitor E1 is a dc bus capacitor 232. The rectifier bridge 224 is used for rectifying the input ac power to dc, and the rectified dc is input to the compressor driving circuit 223 and the fan driving circuit 224 through the power correction circuit 226. The power correction circuit 226 is used for power compensation, and the power correction inductor 231 is electrically coupled to an input terminal of the power correction circuit 226. The dc bus capacitor 232 may be electrically coupled to the output terminal of the power correction circuit 226 to stabilize the dc voltage. The first driving chip 221 is used for driving the compressor driving circuit 223, and the second driving chip 222 is used for driving the fan driving circuit 224. The principles of power control are well-established, and this embodiment is not described here in detail.

Further, in some embodiments of the present utility model, the power input loops are arranged along the right and lower sides of the circuit substrate 100.

As an example, the power input circuit 210 may be disposed along the right side and the lower side of the circuit substrate 100, and it should be noted that the right side, the lower side, the left side and the lower side of the circuit substrate 100 are only described with reference to the orientation shown in fig. 5, and as another example, the power input circuit 210 may be disposed along the left side and the lower side of the circuit substrate, and those skilled in the art may make corresponding changes to the "up, down, left and right" in the present utility model according to the actual mounting orientation of the circuit substrate, which is not limited herein.

Further, in some embodiments of the present utility model, the power correction inductor 231 is disposed on a side of the dc bus capacitor 232 away from the lower side of the circuit substrate, and the integrated power module 220 has a first port and a second port, the first port is disposed on a side of the second port away from the lower side of the circuit substrate, the first port is electrically coupled with the power correction inductor 231, and the second port is electrically coupled with the dc bus capacitor 232.

It can be appreciated that in this embodiment, by disposing the power correction inductor 231 on the side of the dc bus capacitor 232 away from the lower side of the circuit substrate and disposing the first port of the integrated power module 220 on the side of the second port away from the lower side of the circuit substrate, the current path between the integrated power module 220 and the dc bus capacitor 232 is located on the upper side of the integrated power module 220, and the current path between the integrated power module 220 and the power correction inductor 231 is located on the lower side of the integrated power module 220, so that the current paths of the two parts do not cross, and signal crosstalk is further avoided.

Further, in some embodiments of the present utility model, as shown in fig. 4, the controller further includes: the cooling device 500, the cooling device 500 is configured to dissipate heat from the integrated power module 220.

It will be appreciated that in this embodiment, the cooling device 300 may be provided to increase the heat dissipation of the integrated power module 220, thereby reducing the overall temperature of the controller.

Further, in some embodiments of the present utility model, as shown in fig. 4, the cooling device 300 is further configured to dissipate heat from the power plug-in device 230.

It will be appreciated that in this embodiment, the cooling device 300 may be provided to further increase the heat dissipation to the power plug-in device 230 (i.e. the power correction inductor 231 and the dc bus capacitor 232), thereby further reducing the overall temperature of the controller.

In some embodiments, the cooling device 300 may be a water-cooled radiator, which is disposed in contact with the integrated power module 220, and uses cooling water to exchange heat with the surfaces of the integrated power module 220 and the power plug-in device 230 for dissipating heat.

In some embodiments, cooling device 300 may include an air-cooled heat sink in contact with integrated power module 220 and power plug-in device 230.

In the present embodiment, the main body of the air-cooled heat sink is disposed in contact with the integrated power module 220 and the power plug-in device 230, and the main body of the air-cooled heat sink extends with fins in a direction away from the circuit substrate 100. The heat transfer and air cooling of the body and fins of the heat sink, and the heat exchange with air of the integrated power module 220 and power plug-in device 230, are performed to achieve heat dissipation.

In some embodiments, the air-cooled fins may also be correspondingly provided with fans, where the fans form an air channel at the air-cooled fins, so as to increase the air flow speed, thereby improving the heat dissipation effect on the integrated power module 220 and the power plug-in device 230.

Further, in some embodiments of the present utility model, as shown in fig. 5, the component set 200 further includes: a microcontroller unit 240 and a power conversion circuit 250.

Wherein the microcontroller unit 240 is electrically coupled to the integrated power module 220, the microcontroller unit 240 is disposed near an edge of the circuit substrate 100 and is located opposite to the power input loop 210; and, a power conversion circuit 250 is electrically coupled to the power input loop 210 and the microcontroller unit 240, respectively.

It will be appreciated that in this embodiment, the micro-controller unit 240 may include an MCU and a peripheral driving circuit, the micro-controller unit 240 may be a main control unit of the controller, and the micro-controller unit 240 may transmit a control signal to the control integrated power module 220, so that the integrated power module 220 operates according to the control signal.

The power conversion circuit 250 may convert the high voltage power in the power input loop 210 to a low voltage power to power the microcontroller unit 250. The high-voltage power supply can be 220V or 110V, and the low-voltage power supply can be 5V or 3.3V.

When the micro controller unit 240 communicates with a circuit such as the integrated power module 220, the communication signal transmitted is a weak electric signal, such as a PWM (pulse width modulation ) signal, or the like. Since such weak electrical signals are susceptible to interference, resulting in signal distortion, the interference may be reduced by locating the microcontroller unit 240 remotely from the power input loop 210.

As an example, if the power input loop 210 is disposed at the right and lower sides of the circuit substrate 100, the micro controller unit 240 may be disposed at the left and upper sides of the circuit substrate 100, i.e., when the power input loop 210 is located at the lower right corner of the circuit substrate 100, the micro controller unit 240 may be located at the upper left corner of the circuit substrate 100.

Further, in some embodiments of the present utility model, as shown in fig. 5, the component set 200 further includes a current-voltage detection circuit 910, a communication circuit 920, an electrical heating circuit 930, a sensor circuit 940, a four-way valve circuit 950, and an electronic expansion valve circuit 960 electrically coupled to the microcontroller unit 240.

It will be appreciated that in this embodiment, the front side of the circuit substrate 100 is provided with various functional circuits for the control of the air conditioner. The current-voltage detection loop 910 may detect a current and/or a voltage output by the integrated power module 220 to the compressor and the fan, among other things. The communication loop 920 may be used to communicate with a host computer. The electrical heating circuit 930 may be used to control the heating device. The sensor circuit 940 may be coupled to various types of sensors to obtain various operating parameters of the air conditioner. The four-way valve loop 950 is used to control the four-way valve. Electronic expansion valve circuit 960 is used to control the electronic expansion valve. In addition, other functional circuits may be disposed on the front surface of the circuit substrate 100, and specific structures and principles of the various functional circuits are well-known and are not described herein.

Further, in some embodiments of the present utility model, as shown in fig. 5, the power input circuit 210 includes a power input interface 211, a lightning protection circuit 212, a filtering circuit 213, and an anti-inrush current circuit 214 electrically coupled in sequence along a current direction, and the anti-inrush current circuit 214 is electrically coupled with the integrated power module 220.

It will be appreciated that in this embodiment, the power input interface 211 is used to connect to an external power device to access either ac or dc power. The lightning protection circuit 212 is used for intercepting lightning current of a lightning strike and discharging the lightning current to the ground to protect the safety of a back-end circuit. The filter loop 213 is used to eliminate noise of the power supply, so that the power supply is more stable. The filter circuit 213 may include a safety capacitor, a common-mode inductor, and the like. The anti-inrush current loop 214 is used to prevent an inrush current from being generated at the moment the power input interface 211 is connected to the power supply. In addition, the power input circuit 210 may further include other functional circuits, and the specific structures and principles of the various functional circuits are well-known and the detailed description of the present embodiment is omitted herein.

Further, in some embodiments of the present utility model, the integrated power module 220 is integrated with a compressor power module and a fan power module; and, as shown in fig. 5, the component set 200 further includes a first motor interface 260 and a second motor interface 270, the first motor interface 260 being electrically coupled to the compressor power module, the second motor interface 270 being electrically coupled to the fan power module.

It will be appreciated that in this embodiment, the first motor interface 260 is electrically coupled to a compressor power module in the integrated power module 220 for connecting a compressor, and the second motor interface 270 is electrically coupled to a fan power module in the integrated power module 220 for connecting a fan.

In summary, according to the controller of the present utility model, the power input loop is disposed near the edge of the circuit substrate, and the integrated power module and the power plug-in device are uniformly disposed on one side of the power input loop far away from the edge of the circuit substrate, so that current paths between the power input loop, the integrated power module and the power plug-in device are not intersected with each other, signal crosstalk is avoided, thereby improving EMC performance of the controller and ensuring reliability and stability of the controller.

Based on the controller of the embodiment of the utility model, the embodiment of the utility model also provides an air conditioner, which comprises a compressor, a fan and the controller according to the embodiment of the utility model, wherein the controller is configured to control the compressor and the fan. The specific structure and principle of the controller may refer to the foregoing embodiments, and this embodiment is not repeated herein.

In summary, according to the air conditioner disclosed by the utility model, the power input loop on the controller is arranged close to the edge of the circuit substrate, and the integrated power module and the power plug-in devices are uniformly distributed on one side of the power input loop away from the edge of the circuit substrate, so that current paths among the power input loop, the integrated power module and the power plug-in devices are not crossed with each other, signal crosstalk is avoided, the EMC performance of the controller is improved, and the reliability and stability of the controller are ensured.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present utility model, it should 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (11)

1. A controller comprising a circuit substrate and a set of components disposed on a front side of the circuit substrate, the set of components comprising:

a power input loop arranged near the edge of the circuit substrate;

an integrated power module electrically coupled to the power input loop;

the power plug-in device is electrically coupled with the integrated power module to realize power control; the method comprises the steps of,

the integrated power module and the power plug-in devices are uniformly distributed on one side of the power input loop, which is far away from the edge of the circuit substrate.

2. The controller of claim 1, wherein the power plug-in device comprises:

the power correction inductor is electrically coupled with the integrated power module to realize power correction; the method comprises the steps of,

and the direct current bus capacitor is electrically coupled with the integrated power module to realize direct current output.

3. The controller of claim 2, wherein the power input loops are disposed along a right side and a lower side of the circuit substrate.

4. The controller of claim 3, wherein the power correction inductance is disposed on a side of the dc bus capacitance away from a lower side of the circuit substrate, the integrated power module having a first port disposed on a side of the second port away from the lower side of the circuit substrate and a second port electrically coupled to the dc bus capacitance, the first port electrically coupled to the rate correction inductance.

5. The controller according to any one of claims 1 to 4, further comprising:

and the cooling device is configured to radiate heat of the integrated power module.

6. The controller of claim 5, wherein the cooling device is further configured to dissipate heat from the power plug-in device.

7. The controller of any one of claims 1-4, wherein the set of components further comprises:

a microcontroller unit electrically coupled to the integrated power module, the microcontroller unit disposed proximate an edge of the circuit substrate and located opposite the power input loop; the method comprises the steps of,

and the power conversion circuit is electrically coupled with the power input loop and the microcontroller unit respectively.

8. The controller of claim 7, wherein the set of components further comprises a current voltage detection circuit, a communication circuit, an electrical heating circuit, a sensor circuit, a four-way valve circuit, and an electronic expansion valve circuit electrically coupled to the microcontroller unit.

9. The controller of any of claims 1-4, wherein the power input loop comprises a power input interface, a lightning protection loop, a filtering loop, and an inrush current protection loop electrically coupled in sequence along a current direction, the inrush current protection loop electrically coupled with the integrated power module.

10. The controller of any one of claims 1-4, wherein the integrated power module is integrated with a compressor power module and a fan power module; the method comprises the steps of,

the component set further comprises a first motor interface and a second motor interface, wherein the first motor interface is electrically coupled with the compressor power module, and the second motor interface is electrically coupled with the fan power module.

11. An air conditioner comprising a compressor, a fan, and a controller according to any one of claims 1-10, the controller configured to control the compressor and the fan.