Compressor control assembly and refrigeration equipment

Abstract

The compressor control assembly comprises a compressor and a frequency conversion control board, the compressor comprises a shell, a motor and a pump body, the shell is provided with a containing cavity, the motor and the pump body are both arranged in the containing cavity, the motor comprises a stator, a rotor and a driving pin, the rotor is rotationally arranged in the stator, and the driving pin is arranged in the shell. The driving pin is electrically connected with the stator, the pump body comprises a crankcase, the crankcase is connected to the inner wall of the shell, the upper end face of the stator is connected with the crankcase, the stator has modal frequency, the frequency conversion control panel comprises a switching frequency output pin, and the switching frequency output pin is connected with the driving pin. The switching frequency output pin outputs a voltage pulse signal to the driving pin, the frequency of the voltage pulse signal output by the switching frequency output pin is a switching frequency, and the switching frequency and the modal frequency are arranged in a peak shifting manner, so that the switching frequency of the frequency conversion control board and the modal frequency of the stator are prevented from generating resonance. Therefore, the high-frequency electromagnetic noise of the refrigeration equipment is reduced.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a compressor control component and refrigeration equipment. Background Technology

[0002] As people's pursuit of environmental comfort continues to increase, they are placing increasingly higher demands on the noise levels of motors and electrical appliances.

[0003] Refrigeration equipment generally includes a compressor and a variable frequency control board. The variable frequency control board is used to control the working status of the compressor. As for the vibration noise in the compressor, it is mainly electromagnetic noise. Electromagnetic noise is closely related to the stator mode of the variable frequency control board and the compressor. Traditional refrigeration equipment is prone to causing large high-frequency electromagnetic noise during operation. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a compressor control component capable of reducing high-frequency electromagnetic noise in refrigeration equipment.

[0005] This utility model also proposes a refrigeration device having the above-mentioned compressor control components.

[0006] According to the first embodiment of the present invention, the compressor control component includes:

[0007] A compressor includes a housing, a motor, and a pump body. The housing has a receiving cavity, and the motor and the pump body are both disposed within the receiving cavity. The motor includes a stator, a rotor, and drive pins. The rotor is rotatably disposed within the stator, and the drive pins are electrically connected to the stator. The pump body includes a crankcase, which is connected to the inner wall of the housing. The upper end face of the stator is connected to the crankcase, and the stator has a modal frequency.

[0008] The frequency converter control board includes a switching frequency output pin, which is connected to the drive pin. The switching frequency output pin outputs a voltage pulse signal to the drive pin to control the operating state of the stator. The frequency at which the voltage pulse signal is output by the switching frequency output pin is the switching frequency, and the switching frequency is staggered with the mode frequency.

[0009] The compressor control assembly according to the first embodiment of the present invention has at least the following beneficial effects:

[0010] The high-frequency electromagnetic noise of refrigeration equipment is related to the switching frequency of the switching frequency output pin and the mode frequency of the stator. When the refrigeration equipment is working, the switching frequency output pin outputs a series of voltage pulse signals to the stator to control the electronic operation, which causes the stator to generate electromagnetic force. The electromagnetic force causes the stator to vibrate, and the vibration of the stator is transmitted to the housing through the crankcase. Because the switching frequency of the switching frequency output pin and the mode frequency of the stator are set to be staggered, the switching frequency of the frequency converter control board and the mode frequency of the stator do not reach their peak values ​​at the same time. This can avoid the resonance between the switching frequency of the frequency converter control board and the mode frequency of the stator, thereby improving the high-frequency electromagnetic noise of the refrigeration equipment.

[0011] According to some embodiments of this utility model, the switching frequency is A1 and the modal frequency is A2, satisfying: A1≥5000Hz, and A1 / A2 is not an integer.

[0012] According to some embodiments of this utility model, the maximum height range of the stator is 24mm-25mm.

[0013] According to some embodiments of the present invention, the compressor further includes a fastener, the fastener including a rod and a head connected to one end of the rod, the rod passing through the stator and connected to the crankcase, and the head abutting against the lower end face of the stator.

[0014] According to some embodiments of the present invention, the maximum torque range of the fastener is 11 Nm-11.5 Nm.

[0015] According to some embodiments of this utility model, the maximum torque range of the fastener is 11Nm-11.5Nm, the switching frequency is 6000Hz, and the maximum height range of the stator is 24mm-25mm.

[0016] The refrigeration equipment according to the second embodiment of the present invention includes a housing and the compressor control assembly described in the above embodiments, wherein the compressor and the frequency converter control board are respectively disposed in different positions within the housing.

[0017] The refrigeration device according to the second embodiment of the present invention has at least the following beneficial effects:

[0018] When the compressor control component of the first embodiment of this utility model is used, the switching frequency output pin outputs a series of voltage pulse signals to the stator to control the electronic operation, so that the stator generates electromagnetic force. The electromagnetic force causes the stator to vibrate, and the vibration of the stator is transmitted to the housing through the crankcase. Since the switching frequency of the switching frequency output pin and the modal frequency of the stator are staggered, the switching frequency of the frequency converter control board and the modal frequency of the stator do not reach their peak values ​​at the same time. This can avoid the resonance between the switching frequency of the frequency converter control board and the modal frequency of the stator, thereby improving the high-frequency electromagnetic noise of the refrigeration equipment.

[0019] According to some embodiments of the present invention, the cabinet is provided with a cold storage compartment and a first temperature sensor. The first temperature sensor is electrically connected to the frequency converter control board and is used to detect the temperature inside the cold storage compartment.

[0020] According to some embodiments of the present invention, a second temperature sensor is provided inside the housing, the second temperature sensor is electrically connected to the frequency converter control board, and the second temperature sensor is used to detect the temperature of the external environment of the refrigeration equipment.

[0021] According to some embodiments of the present invention, the cabinet is provided with a freezer compartment, an evaporator and a defrost sensor. The evaporator and the defrost sensor are respectively located in the freezer compartment. The defrost sensor is close to the evaporator and is electrically connected to the frequency converter control board.

[0022] Additional aspects and advantages of this 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. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 This is a schematic diagram of the internal structure of the compressor according to an embodiment of the present invention;

[0025] Figure 2 This is a circuit diagram of the frequency converter control board according to an embodiment of the present utility model;

[0026] Figure 3 This is a comparison diagram of the 50Hz power supply high-frequency electromagnetic noise of the refrigeration equipment in this embodiment of the utility model;

[0027] Figure 4 A comparison diagram of the 60Hz power supply high-frequency electromagnetic noise of the refrigeration equipment in this embodiment of the utility model.

[0028] Icon labels:

[0029] Compressor 100, housing 110, receiving cavity 111, motor 120, stator 121, rotor 122, crankcase 130, crankshaft 140, fastener 150, frequency converter control board 200, first temperature sensor 310, second temperature sensor 320, defrost sensor 330, compensating heating wire 340, door switch 350, and light-emitting element 360. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] In related technologies, refrigeration equipment generally includes a compressor and a variable frequency control board. The variable frequency control board is used to control the working state of the compressor. As for the vibration noise in the compressor, it is mainly electromagnetic noise. Electromagnetic noise is closely related to the mode of the variable frequency control board and the stator of the compressor. In particular, when the switching frequency of the variable frequency control board and the mode frequency of the compressor stator are close, the refrigeration equipment is prone to causing large high-frequency electromagnetic noise.

[0035] Reference Figure 1 , Figure 2 , Figure 1 This diagram shows the internal structure of the compressor 100 according to an embodiment of the present invention. Figure 2A circuit diagram of the frequency converter control board 200 according to an embodiment of the present invention is shown. The first embodiment of the present invention provides a compressor control assembly, including a compressor 100 and a frequency converter control board 200. The compressor 100 includes a housing 110, a motor 120, and a pump body. The housing 110 has a receiving cavity 111, and the motor 120 and the pump body are both disposed within the receiving cavity 111. The pump body includes a crankcase 130. The motor 120 includes a stator 121, a rotor 122 rotatably disposed within the stator 121, and drive pins electrically connected to the stator 121. The upper end face of the stator 121 is connected to the lower side of the crankcase 130, and the lower end face of the stator 121 is connected to the bottom wall of the housing 110 through an elastic support assembly. The stator 121 has a mold... The frequency converter control board 200 includes a switching frequency output pin, which is connected to the drive pin. The switching frequency output pin outputs a voltage pulse signal to the drive pin to control the working state of the stator. The frequency of the voltage pulse signal output by the switching frequency output pin is the switching frequency. The switching frequency of the switching frequency output pin and the mode frequency of the stator 121 are staggered so that the switching frequency of the switching frequency output pin and the mode frequency of the stator 121 do not reach their peak values ​​at the same time, so as to avoid resonance between the switching frequency of the switching frequency output pin and the mode frequency of the stator 121, thereby improving the high-frequency electromagnetic noise of the refrigeration equipment.

[0036] It should be noted that the stator 121 includes a stator core and a multiphase winding. The stator core has multiple stator slots spaced apart along the circumferential direction. The multiphase winding is wound in the stator slots. The drive pin is electrically connected to the lead end of the multiphase winding. The switching frequency output pin outputs a series of voltage pulse signals to the multiphase winding. The vibration of the stator 121 caused by electromagnetic force is transmitted to the housing 110 through the crankcase 130, thereby exciting the structural vibration noise radiation of the housing 110, resulting in high-frequency electromagnetic noise generated by the refrigeration equipment, which will not be elaborated here.

[0037] The increase or decrease of the compressor frequency corresponds to the static adjustment of the switching frequency. When the modal frequency is high, increasing the switching frequency can achieve better control effect; while when the compressor frequency is low, decreasing the switching frequency can reduce the hardware loss of the switching frequency output pin and reduce the heat generation of the frequency converter. This will not be elaborated further here.

[0038] It is understandable that the modal frequencies of stator 121 are the frequencies at which stator 121 vibrates freely under undamped or very weak damping conditions. In modal analysis, the modal frequencies of stator 121 can be obtained by solving the dynamic equations of the structure.

[0039] For example, the high-frequency electromagnetic noise of the refrigeration equipment is related to the switching frequency of the switching frequency output pin and the mode frequency of the stator 121. When the refrigeration equipment is working, the switching frequency output pin outputs a series of voltage pulse signals, which are input to the stator 121, causing the stator 121 to generate an electromagnetic force. The electromagnetic force causes the stator 121 to vibrate, and the vibration of the stator 121 is transmitted to the housing 110 through the crankcase 130. Because the switching frequency of the switching frequency output pin and the mode frequency of the stator 121 are staggered, the switching frequency of the switching frequency output pin and the mode frequency of the stator 121 do not reach their peak values ​​at the same time, so as to avoid resonance between the switching frequency of the switching frequency output pin and the mode frequency of the stator 121, thereby improving the high-frequency electromagnetic noise of the refrigeration equipment.

[0040] It is understandable that the staggered setting of the switching frequency of the switching frequency output pin and the mode frequency of stator 121 can be such that when the switching frequency of the switching frequency output pin is at its peak, the mode frequency of stator 121 is at its valley, or the mode frequency of stator 121 is in a period of decreasing towards the valley, or the mode frequency of stator 121 is in a period of increasing away from the valley. This will not be elaborated further here.

[0041] In this embodiment, the pump body also includes a crankshaft 140, a cylinder, a piston, and a connecting rod. The crankshaft 140 is vertically installed inside the crankcase 130. The cylinder is located on the side of the crankcase 130 away from the stator 121 and has a cylinder cavity. The piston is connected to the eccentric part of the crankshaft 140 through the connecting rod. The piston can reciprocate in the cylinder cavity under the rotational motion of the crankshaft 140 to compress the refrigerant in the cylinder cavity, so that the compressor 100 can perform refrigeration work.

[0042] In this embodiment, the switching frequency is A1 and the mode frequency is A2, satisfying: A1≥5000Hz, and A1 / A2 is not an integer. This can prevent the switching frequency of the switching frequency output pin from resonating with the mode frequency of the stator 121, thereby reducing the high-frequency electromagnetic noise of the cooling equipment.

[0043] For example, the switching frequency of the switching frequency output pin is 6000Hz, and the mode frequency of stator 121 is 5300Hz. This makes the ratio between the switching frequency of the switching frequency output pin and the mode frequency of stator 121 a decimal, which can avoid resonance between the switching frequency of the switching frequency output pin and the mode frequency of stator 121, thereby reducing the high-frequency electromagnetic noise of the refrigeration equipment.

[0044] It should be noted that the switching frequency of the switching frequency output pin is greater than the mode frequency of stator 121. The switching frequency of the switching frequency output pin can be 5000Hz, 5500Hz, 6500Hz, 7000Hz, 7500Hz, 8000Hz, 8500Hz, 9000Hz, etc., and the mode frequency of stator 121 can be 4300Hz, 4800Hz, 5800Hz, 6300Hz, 6800Hz, 7300Hz, 7800Hz, 8300Hz, etc., without any restrictions.

[0045] In this embodiment, the compressor 100 also includes a fastener 150, which is a bolt or screw or other component. The fastener 150 includes a rod and a head connected to one end of the rod. The stator 121 is provided with a through hole, and the crankcase 130 is provided with a threaded hole that matches the through hole. The rod passes through the through hole and is threadedly engaged with the threaded hole. The head is located below the lower end face of the stator 121, so that a stable connection is achieved between the stator 121 and the crankcase 130, which facilitates the assembly of the stator 121.

[0046] It is understandable that the stiffness and weight of stator 121 are related to the modal frequencies of stator 121. The modal frequencies of stator 121 increase with the increase of stator stiffness, and the modal frequencies of stator 121 increase with the increase of stator weight. Specifically, the stiffness of stator 121 increases with the increase of the maximum torque of fastener 150, and the weight of stator 121 increases with the increase of stator height.

[0047] In actual operation, the maximum torque range of the fastener 150 connecting the stator 121 of the conventional fixed compressor 100 is 10 N·m-10.5 N·m. In a 50 Hz power supply frequency spectrum, the noise level of the refrigeration equipment at 10 kHz is 31.1 dBA; in a 60 Hz power supply frequency spectrum, the noise level at 10 kHz is 32.7 dBA. It is evident that the noise generated by the refrigeration equipment at 10 kHz is still relatively high. The maximum torque of the fastener 150 refers to the torque required for the tightening device to loosen the fastener 150.

[0048] Based on this, in this embodiment, by designing the maximum torque range of the fastener 150 to be between 11 N·m and 11.5 N·m, the connection between the stator 121 and the crankcase 130 is made more stable, which increases the stiffness of the stator 121 and reduces the vibration of the stator 121, thereby reducing the high-frequency electromagnetic noise generated by the compressor 100. The maximum torque of the fastener 150 refers to the torque required for the tightening device to loosen the fastener 150.

[0049] It should be noted that the maximum torque value of fastener 150 can be 11 N.m, 11.1 Nm, 11.2 Nm, 11.3 Nm, 11.4 Nm, or 11.5 Nm, and is not limited here.

[0050] In this embodiment, the maximum height of stator 121 is H, which satisfies: 24mm≤H≤25mm. This can change the mode of stator 121, reduce the mode frequency of stator 121, avoid resonance caused by the natural frequency of motor 120 and compressor 100 being close to the electromagnetic excitation force frequency, thereby reducing high-frequency carrier noise and improving the performance of motor 120 and compressor 100.

[0051] For example, the maximum height of the stator 121 of a conventional compressor 100 ranges from 25.5mm to 26.5mm. The weight of the stator 121 increases with the increase of the stator 121 height. Compared with this embodiment, the maximum height of the stator 121 of the conventional compressor 100 is greater than the maximum height of the stator 121 of the compressor 100 in this embodiment. That is, the weight of the stator 121 of the compressor 100 in this embodiment is less than that of the stator 121 of the conventional compressor 100. This can reduce the modal frequency of the stator 121 in this embodiment, so that the modal frequency of the stator 121 in this embodiment is not equal to the switching frequency of the switching frequency output pin, thereby reducing the high-frequency electromagnetic noise of the refrigeration equipment.

[0052] It should be noted that the stator core is made up of multiple stator laminations stacked together. The maximum height of stator 121 refers to the distance between the upper surface of the uppermost stator lamination and the lower surface of the lowermost stator lamination, which will not be elaborated here.

[0053] It should be noted that the maximum height of stator 121 can be 24mm, 24.1mm, 24.2mm, 24.3mm, 24.4mm, 24.5mm, 24.6mm, 24.7mm, 24.8mm, 24.9mm, or 25mm, and is not limited here.

[0054] In this embodiment, the switching frequency of the switching frequency output pin is 6000Hz. The ratio of 10000Hz to the switching frequency is not an integer, which can suppress the excitation and transmission path of 10000Hz high-frequency electromagnetic noise, thereby reducing high-frequency electromagnetic noise.

[0055] In this embodiment, a compressor control component with a switching frequency of 6000Hz for the switching frequency output pin, a maximum height range of 24-25mm for the stator 121, and a maximum torque range of 11N.m to 11.5Nm for the fastener 150 is used as Example 1. A compressor control component with a switching frequency of 5000Hz for the switching frequency output pin, a maximum height range of 25.5-26.5mm for the stator 121, and a maximum torque range of 10N.m to 10.5Nm for the fastener 150 is used as Comparative Example 1.

[0056] Reference Figure 3 , Figure 3 This is a comparison diagram of the 50Hz power supply high-frequency electromagnetic noise of the refrigeration equipment according to an embodiment of this utility model. For example... Figure 3 As shown, when the power supply frequency is 50Hz, the noise value of Comparative Example 1 is 31.1dBA at 10000Hz and 25.5dBA at 8000Hz, while the noise value of Example 1 is 25.4dBA at 10000Hz and 23.2dBA at 8000Hz. It can be seen that the noise value of Example 1 at 10000Hz is reduced by 5.7dBA compared to Comparative Example 1, and the noise value at 8000Hz is reduced by 2.3dBA compared to Comparative Example 1.

[0057] Reference Figure 4 , Figure 4 This is a comparison diagram of the 60Hz power supply high-frequency electromagnetic noise of the refrigeration equipment according to an embodiment of this utility model. For example... Figure 4 As shown, when the power supply frequency is 60Hz, Comparative Example 1 has a noise value of 32.1dBA at 10000Hz and 27.5dBA at 8000Hz, while Example 1 has a noise value of 26.1dBA at 10000Hz and 22.2dBA at 8000Hz. It can be seen that Example 1's noise value at 10000Hz is 6dBA lower than that of Comparative Example 1, and its noise value at 8000Hz is 3.3dBA lower than that of Comparative Example 1.

[0058] It should be noted that the switching frequency of the switching frequency output pin is a static value. The frequency converter control board 200 remains unchanged at any power supply frequency. For example, when the power supply frequency is 50Hz or 60Hz, the switching frequency of the switching frequency output pin is 6000Hz, which will not be elaborated further here.

[0059] The refrigeration equipment of the second embodiment of this utility model includes a housing and a compressor control assembly as described in the above embodiment, with the compressor 100 and the frequency converter control board 200 respectively disposed inside the housing. The refrigeration equipment can be a refrigerator, freezer, etc.

[0060] For example, using the compressor control component of the first embodiment of this utility model, when the refrigeration equipment is working, the switching frequency output pin outputs a series of voltage pulse signals. These voltage pulse signals are input to the stator 121, causing the stator 121 to generate an electromagnetic force. This electromagnetic force causes the stator 121 to vibrate. The vibration of the stator 121 is transmitted to the housing 110 through the crankcase 130. Because the switching frequency of the switching frequency output pin and the modal frequency of the stator 121 are staggered, the switching frequency of the switching frequency output pin and the modal frequency of the stator 121 do not reach their peak values ​​at the same time. This avoids resonance between the switching frequency of the switching frequency output pin and the modal frequency of the stator 121, thereby improving the high-frequency electromagnetic noise of the refrigeration equipment.

[0061] Since the refrigeration equipment adopts all the technical solutions of the compressor control components of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0062] In this embodiment, the refrigerator compartment includes a cold storage compartment and a first temperature sensor 310. The first temperature sensor 310 is electrically connected to the frequency converter control board 200. The first temperature sensor 310 is used to detect the temperature inside the cold storage compartment to monitor the temperature in real time. When the temperature inside the cold storage compartment is higher than a preset threshold, the first temperature sensor 310 sends a first electrical signal to the frequency converter control board 200. The frequency converter control board 200 then controls the compressor 100 to start, thereby cooling the environment inside the cold storage compartment. When the temperature inside the cold storage compartment reaches the preset threshold, the first temperature sensor 310 sends a second electrical signal to the frequency converter control board 200. The frequency converter control board 200 then controls the compressor 100 to stop working, thereby stopping the cooling of the environment inside the cold storage compartment and facilitating the control of the compressor 100's start and stop. One of the first and second electrical signals is a low-level signal, and the other is a high-level signal.

[0063] In this embodiment, a second temperature sensor 320 is provided inside the housing. The second temperature sensor 320 is electrically connected to the frequency converter control board 200. The second temperature sensor 320 is used to detect the temperature of the external environment of the housing, so that the compressor 100 can adjust the running speed of the motor 120 according to the change of the external environment temperature, thereby optimizing the energy consumption of the refrigeration equipment and extending the service life of the refrigeration equipment.

[0064] For example, when the external ambient temperature is too high, the second temperature sensor 320 can send a third electrical signal to the inverter control board 200 to increase the operating speed of the motor 120 of the compressor 100, thereby improving the cooling efficiency of the compressor 100. When the external ambient temperature is too low, the second temperature sensor 320 can send a fourth electrical signal to the inverter control board 200 to reduce the operating speed of the motor 120 of the compressor 100, so that the temperatures in the refrigerator compartment and the freezer compartment inside the refrigerator can be maintained at preset temperatures, thereby improving the food preservation effect. One of the third and fourth electrical signals is a low-level signal, and the other is a high-level signal.

[0065] It is understandable that when the external ambient temperature of the cabinet is low, the compressor 100 will not function properly due to condensation freezing. Therefore, this embodiment includes a compensating heating wire 340 inside the cabinet. The compensating heating wire 340 is electrically connected to the frequency converter control board 200. When the second temperature sensor 320 detects that the external ambient temperature is too low, the frequency converter control board 200 controls the compensating heating wire 340 to start working to prevent condensation from freezing. When the second temperature sensor 320 detects that the external ambient temperature is too high, the frequency converter control board 200 controls the compensating heating wire 340 to stop working, thereby saving electricity and reducing energy consumption of the refrigeration equipment. The compensating heating wire 340 typically uses an electric heating wire or a PTC ceramic heating element as the heating element.

[0066] In this embodiment, the cabinet contains a freezer compartment, an evaporator, and a defrost sensor 330. The defrost sensor 330 is electrically connected to the frequency converter control board 200. The defrost sensor 330 is a thermistor, and its resistance increases as the temperature decreases. The defrost sensor 330 is located around the evaporator. When the temperature inside the freezer compartment decreases, the defrost sensor 330 closes. The frequency converter control board 200 controls the defrost sensor 330 to operate, and the defrost sensor 330 is powered on and heats up to heat the surrounding environment of the evaporator, thereby defrosting the frost on the defrost sensor 330.

[0067] It is understandable that the defrost sensor 330 is normally in the off state at room temperature. When the temperature drops below -7℃, the defrost sensor 330 closes, and the defrost heater is powered on and heats up, which can defrost the frost on the evaporator. This will not be elaborated further here.

[0068] It should be noted that the freezer and refrigerator compartments can be separated vertically or horizontally; there are no restrictions on this.

[0069] It should be noted that the electrical connections of the various sensors mentioned above can be wired, terminal contact, or wireless. Wired connections can be fixed wires or pluggable connectors, while wireless connections can be made via WiFi, Bluetooth, infrared, etc. Specific implementation methods can be adjusted according to actual needs and are not limited here.

[0070] It should be noted that the first temperature sensor 310 or the second temperature sensor 320 mentioned above can be a thermocouple temperature sensor or a resistance temperature sensor, etc., and there is no limitation here.

[0071] In this embodiment, the refrigeration equipment also includes a door, a door switch 350, and a light-emitting element 360. The door is rotatably connected to the refrigerator compartment to open or close it. The door switch 350 and the light-emitting element 360 are electrically connected to the frequency converter control board 200. The door switch 350 is used to detect whether the door is open. The light-emitting element 360 is located inside the refrigerator compartment and is used to illuminate the refrigerator compartment when the door is open for user convenience. The light-emitting element 360 can be an LED bead or a light bulb, etc., and is not limited thereto.

[0072] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiment. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A compressor control assembly, characterized in that, include: A compressor includes a housing, a motor, and a pump body. The housing has a receiving cavity, and the motor and the pump body are both disposed within the receiving cavity. The motor includes a stator, a rotor, and drive pins. The rotor is rotatably disposed within the stator, and the drive pins are electrically connected to the stator. The pump body includes a crankcase, which is connected to the inner wall of the housing. The upper end face of the stator is connected to the crankcase, and the stator has a modal frequency. The frequency converter control board includes a switching frequency output pin, which is connected to the drive pin. The switching frequency output pin outputs a voltage pulse signal to the drive pin to control the operating state of the stator. The frequency at which the voltage pulse signal is output by the switching frequency output pin is the switching frequency, and the switching frequency is staggered with the mode frequency.

2. The compressor control assembly according to claim 1, characterized in that: The switching frequency is A1, and the mode frequency is A2, satisfying: A1≥5000Hz, and A1 / A2 is not an integer.

3. The compressor control assembly according to claim 1, characterized in that: The maximum height range of the stator is 24mm-25mm.

4. The compressor control assembly according to claim 1, characterized in that: The compressor also includes a fastener, which includes a rod and a head connected to one end of the rod. The rod passes through the stator and is connected to the crankcase, and the head abuts against the lower end face of the stator.

5. The compressor control assembly according to claim 4, characterized in that: The maximum torque range of the fastener is 11 Nm to 11.5 Nm.

6. The compressor control assembly according to claim 4, characterized in that: The maximum torque range of the fastener is 11Nm-11.5Nm, the switching frequency is 6000Hz, and the maximum height range of the stator is 24mm-25mm.

7. A refrigeration device, characterized in that, include: Box; The compressor control assembly according to any one of claims 1-6, wherein the compressor and the frequency converter control board are respectively located in different positions within the housing.

8. The refrigeration equipment according to claim 7, characterized in that: The cabinet is equipped with a cold storage compartment and a first temperature sensor. The first temperature sensor is electrically connected to the frequency converter control board and is used to detect the temperature inside the cold storage compartment.

9. The refrigeration equipment according to claim 7, characterized in that: The housing is equipped with a second temperature sensor, which is electrically connected to the frequency converter control board. The second temperature sensor is used to detect the temperature of the external environment of the refrigeration equipment.

10. The refrigeration equipment according to claim 7, characterized in that: The enclosure is equipped with a freezer compartment, an evaporator, and a defrost sensor. The evaporator and the defrost sensor are respectively located in the freezer compartment. The defrost sensor is close to the evaporator and is electrically connected to the frequency converter control board.

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