Cooling device of refrigeration equipment and refrigeration equipment

Abstract

The embodiment of the utility model discloses a cooling device of refrigeration equipment and the refrigeration equipment. The cooling device comprises a fresh air fan, an air conveying pipeline and a circuit board. The fresh air fan is arranged above the inner wall of a refrigerating chamber of the refrigerating equipment and is used for circulating air in a chamber of the refrigerating equipment and external air; the circuit board is arranged in an electrical box shell of the refrigeration equipment; one end of the air conveying pipeline communicates with the fresh air fan, the other end of the air conveying pipeline communicates with the electrical box shell, and the air conveying pipeline is used for conveying cold air blown out by the fresh air fan into the electrical box shell. The fresh air fan is connected with the electric appliance box shell provided with the circuit board through the air conveying pipeline, the fresh air fan conveys the cold air in the refrigeration equipment cavity to the circuit board through the air conveying pipeline, the circuit board is cooled, cyclic utilization of the cold air in the cavity is achieved, and the temperature in the circuit board is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of home appliances, particularly to a cooling device of refrigeration equipment and refrigeration equipment. BACKGROUND

[0002] The working principle of the refrigerator is that a control circuit controls the rotation of a compressor through six IGBT (Insulated Gate Bipolar Transistor) to compress refrigerant, and the high-pressure refrigerant after compression flows through a capillary tube, rapidly expands and absorbs heat to achieve a refrigeration effect. Because the current generates a large amount of heat on the IGBT, the IGBT is easily damaged by heat, which causes the circuit board to fail. At the same time, as the integration of the circuit board becomes higher and higher, the components on the circuit board are arranged more and more densely, which results in insufficient heat dissipation area, especially around the high-heat components, the temperature is more likely to exceed the standard. This affects the efficiency and service life of the circuit board. SUMMARY

[0003] The present application provides a cooling device of refrigeration equipment to solve the problem of heat generation of the circuit board. The technical scheme provided by the present application is as follows:

[0004] On the one hand, the present application provides a cooling device of refrigeration equipment, comprising a fresh air fan, a wind conveying pipeline and a circuit board;

[0005] The fresh air fan is arranged above the inner wall of the refrigeration equipment, and is used to circulate the air in the chamber of the refrigeration equipment with the air outside;

[0006] The circuit board is arranged in the electrical box shell of the refrigeration equipment;

[0007] One end of the wind conveying pipeline is in communication with the fresh air fan, and the other end is in communication with the electrical box shell, and the wind conveying pipeline is used to convey the cold air blown out by the fresh air fan into the electrical box shell.

[0008] In some specific embodiments, a temperature sensor is arranged in the electrical box shell, which is used to detect the temperature in the electrical box shell and transmit the collected temperature signal to the fresh air fan main controller, which is used to control the fresh air fan to start when the temperature is greater than a preset temperature threshold, and control the fresh air fan to stop when the temperature is lower than the preset temperature threshold.

[0009] In some specific embodiments, the circuit board comprises a first side and a second side arranged oppositely, the first side is provided with a fan, and the second side is provided with a power generation component and a heat sink;

[0010] The fan is used to deliver air to the power device arranged on the first side, wherein the power device generates heat to form a heat area at a corresponding position on the second side;

[0011] The power generation device comprises a hot end and a cold end arranged oppositely, the hot end is in contact with the heat area, and the cold end is in contact with the heat sink.

[0012] In some specific embodiments, an air supply fan is arranged at the air outlet of the fresh air fan, one side of the air supply fan is communicated with the main ventilation duct, and a branch duct for entering the outside world is arranged on the main ventilation duct;

[0013] An air flow rate sensor is fixedly arranged at the end of the main ventilation duct, used to monitor the air flow rate and transmit the collected flow rate signal to the fresh air fan main controller, the fresh air fan main controller is used to control the rotation speed of the air supply fan to increase when the flow rate is greater than a preset flow rate threshold, and control the rotation speed of the air supply fan to decrease when the flow rate is lower than the preset flow rate threshold.

[0014] In some specific embodiments, a plurality of vias penetrating through the circuit board are arranged on the circuit board, and the power devices are mounted on the back surface of the circuit board;

[0015] A plurality of jumpers are arranged on the front surface of the circuit board, two ends of each jumper are welded to the vias respectively, and each jumper covers the vias;

[0016] Each jumper is arranged on the transverse two sides or the longitudinal two sides of a corresponding power device, so that at least part of the heat generated by the corresponding power device is transmitted to the corresponding jumper through the vias covered by the corresponding jumper, and the surface area of each jumper is a preset multiple of the area of the surface of the corresponding power device.

[0017] In some specific embodiments, each jumper comprises:

[0018] Two end pin segments welded to the front surface of the circuit board;

[0019] A cross-connection segment for connecting the two end pin segments and arching away from the circuit board.

[0020] In some specific embodiments, the power generation device is a semiconductor thermoelectric power generation sheet, the power generation device is electrically connected with the fan and used to supply power to the fan.

[0021] In another aspect, the application also provides a refrigeration device comprising the above cooling device.

[0022] In some specific embodiments, the refrigeration device further comprises a refrigeration device body and a first door body;

[0023] The refrigeration device body is provided with a fan, an air duct, and a first air outlet in communication with the air duct, and the fan is used to guide air flow into the air duct;

[0024] The first door body is connected to the refrigeration device body, and a surface of the first door body that generates condensation due to temperature difference faces the first air outlet.

[0025] In some specific embodiments, the refrigeration device body further comprises a second door body, and the second door body is arranged opposite to the first door body, and the second door body forms the first air outlet;

[0026] The first door body is provided with a second air outlet in communication with the air duct, and a surface of the second door body that generates condensation due to temperature difference faces the second air outlet.

[0027] By using the above technical scheme, the cooling device of the refrigeration device and the refrigeration device provided in the present application have the following beneficial effects:

[0028] The embodiment of the present application discloses a cooling device of a refrigeration device and the refrigeration device. The cooling device provided in the present application comprises a fresh air fan, an air conveying pipeline, and a circuit board. The fresh air fan is arranged above the inner wall of the refrigeration chamber of the refrigeration device and is used to circulate the air in the cavity of the refrigeration device and the air outside. The circuit board is arranged in the electrical box shell of the refrigeration device. One end of the air conveying pipeline is in communication with the fresh air fan, and the other end is in communication with the electrical box shell. The air conveying pipeline is used to convey the cold air blown out by the fresh air fan into the electrical box shell. The fresh air fan is connected to the electrical box shell provided with the circuit board through the air conveying pipeline. The fresh air fan conveys the cold air in the cavity of the refrigeration device to the circuit board through the air conveying pipeline, cools the circuit board, realizes the recycling of the cold air in the cavity, and reduces the temperature in the circuit board. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 The schematic diagram of the cooling device of the refrigeration device provided in the embodiment of the present application;

[0031] Figure 2 The schematic diagram of the circuit board provided in the embodiment of the present application Figure 1 ;

[0032] Figure 3 Schematic diagram of circuit board provided for embodiments of the present application Figure 2 ;

[0033] Figure 4 Schematic diagram of circuit board provided for embodiments of the present application Figure 3 ;

[0034] Figure 5 Schematic diagram of refrigeration equipment provided for embodiments of the present application

[0035] The following is a supplement to the drawings:

[0036] 1-cooling device; 11-fresh air fan; 12-air conveying pipeline; 13-electrical box shell; 14-circuit board; 141-first side; 142-second side; 15-fan; 16-power generation device; 17-radiator; 18-power device; 19-jumper;

[0037] 2-main body of refrigeration equipment

[0038] 3-first door body

[0039] 4-second door body DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0041] The terms "one embodiment," "an embodiment,” "embodiment,” “an implementation,” “one implementation,” “implementation,” etc., as may be used herein, refer to a specific implementation, or a specific combination of features, structures, or characteristics. As such, these terms indicate that at least one implementation of the present application can include, but is not required to include, at least the features, structures, or characteristics so described. Thus, for example, it will be understood that the terms "one embodiment" or "an embodiment” are not necessarily referring to the same embodiment. Furthermore, the terms "first,” “second,” third,” etc. are used herein only to describe different features, structures, or characteristics, and do not imply that the features, structures, or characteristics are limited to a particular order or sequence. As such, these terms are used only to distinguish one feature, structure, or characteristic from another. It will be understood that the features, structures, or characteristics so distinguished can be combined in any suitable order or sequence.

[0042] When a range of values is disclosed, unless otherwise expressed, the range is a continuous range including any and every single value within the range. Further, unless otherwise expressed, the description of a range includes any and every integer within the range. Furthermore, where the description concludes with two or more ranges, it is to be understood that the description is inclusive of any and all intervening sub-ranges.

[0043] Please refer to Figure 1 The cooling device of the refrigeration equipment provided by the embodiment of the present application comprises a fresh air fan 11, a wind conveying pipeline 12, and a circuit board 14.

[0044] The fresh air fan 11 is arranged above the inner wall of the refrigeration chamber of the refrigeration equipment, and is used for circulating the air in the chamber of the refrigeration equipment with the air outside. Specifically, the fresh air fan 11 introduces fresh air outside into the chamber of the refrigeration equipment, and discharges the air in the chamber of the refrigeration equipment to the outside, so as to realize the renewal and circulation of the air in the chamber of the refrigeration equipment. The fresh air fan 11, the air inlet, the air outlet, and various pipes and joints of the fresh air system form an open circulation system. When the fresh air fan 11 is started, negative pressure is formed in the chamber of the refrigeration equipment, so that the air in the chamber of the refrigeration equipment is discharged to the outside through the air outlet and the fresh air fan 11, the temperature in the refrigeration equipment is uniformly distributed, the peculiar smell and humidity in the refrigeration equipment are reduced, the breeding and spread of bacteria are inhibited, and the cross contamination of food and the mold in the refrigeration equipment are avoided. Generally, the refrigeration equipment includes a refrigerator and a freezer.

[0045] The circuit board 14 is arranged in the electrical box shell 13 of the refrigeration equipment, and the electrical box shell 13 is used for covering the circuit board 14 to prevent the circuit board 14 from being damaged due to the external environment. Specifically, the control unit on the circuit board 14 can adjust the running speed or start-stop of the fresh air fan 11 according to the demand, so as to promote the circulation and distribution of cold air. The circuit board 14 can also monitor the temperature in the chamber of the refrigeration equipment through the temperature sensor, and adjust the working of the compressor according to the set temperature, so as to maintain a constant low-temperature environment. The timer and sensor on the circuit board 14 can control the start and end of the defrosting period, and periodically defrost to maintain the defrosting efficiency. When the door of the refrigeration equipment is opened, the circuit board 14 activates the internal lighting to provide sufficient light illumination. If the door of the refrigeration equipment is not properly closed or the internal temperature exceeds the preset range, the circuit board 14 triggers the alarm system to remind the user to take action. The electrical box shell 13 is used for protecting the internal electrical elements and connections from the external environment, such as dust, moisture, corrosive gases, etc. The electrical box shell 13 is usually made of insulating materials, for example, the insulating materials can be plastic such as ABS, polycarbonate, to ensure electrical safety and prevent electric shock accidents. The electrical box shell 13 can also provide physical support for the electrical elements, ensuring the correct position and fixation of the elements.

[0046] One end of the air supply pipeline 12 communicates with the fresh air fan 11, and the other end communicates with the electrical box shell 13. The air supply pipeline 12 is used for conveying the cold air blown out by the fresh air fan 11 into the electrical box shell 13. The fresh air fan and the electrical box shell provided with the circuit board 14 are connected through the air supply pipeline 12 in the present application. The fresh air fan 11 conveys the cold air in the chamber of the refrigeration equipment to the circuit board 14 through the air supply pipeline 12, so as to cool the circuit board 14, realize the recycling of the cold air in the chamber, and reduce the temperature in the circuit board 14.

[0047] In some specific embodiments, a temperature sensor is arranged in the electrical box housing 13, which is used to detect the temperature inside the electrical box housing 13 and transmit the collected temperature signal to the fresh air fan main controller. When the temperature is greater than the preset temperature threshold, the fresh air fan 11 is controlled to start; when the temperature is lower than the preset temperature threshold, the fresh air fan 11 is controlled to stop. Specifically, the temperature sensor usually uses a thermistor such as NTC thermistor as a temperature sensing element, and the resistance value of the temperature sensing element changes with the change of temperature. The temperature sensor converts the monitored temperature change into an electrical signal and transmits it to the fresh air fan main controller. The fresh air fan main controller adjusts the start and stop of the fresh air fan 11 according to the received signal to maintain a constant low temperature environment inside the refrigeration equipment. When the temperature is greater than the preset temperature threshold, the fresh air fan 11 starts to reduce the temperature; when the temperature is lower than the preset temperature threshold, the fresh air fan 11 stops working to avoid excessive refrigeration. The preset temperature threshold of the refrigeration equipment cold storage room is generally maintained between 0-5 degrees Celsius to ensure the freshness and safety of food, and the preset temperature threshold of the refrigeration equipment freezer is generally maintained below -18 degrees Celsius to ensure the safety of frozen food and prolong its shelf life. Precise control of the working of the fresh air fan 11 helps to improve the energy efficiency of the refrigeration equipment and reduce energy waste. In some intelligent refrigeration equipment, the temperature sensor can be connected to the Internet, allowing users to remotely monitor and adjust the temperature of the refrigeration equipment through a smartphone or other device, improving the convenience and flexibility of use.

[0048] In some specific embodiments, please refer to Figure 2 and Figure 3 The circuit board 14 includes a first side 141 and a second side 142 arranged opposite to each other, the first side 141 is provided with the fan 15, and the second side 142 is provided with the power generation device 16 and the heat sink 17. The double-sided circuit board 14 design is adopted, and the first side 141 and the second side 142 can respectively place different components or elements to optimize the space utilization and improve the flexibility of wiring, and ensure that the components on the first side 141 and the second side 142 of the circuit board 14 are reasonably arranged, thereby achieving good performance and heat dissipation effect. Specifically, the placement of components on the first side 141 or the second side 142 can be determined according to the size, weight and functional requirements of the components. For example, heavier components or temperature-sensitive components such as BGA or LGA packaged chips may be more suitable for placement on the second side 142 to reduce the risk of falling due to gravity and heat during reflow soldering. The first side 141 of the present application is provided with the fan 15, and the second side 142 is provided with the power generation device 16 and the heat sink 17, by dispersing the layout of high-power components, the heat is prevented from being concentrated in the same area to prevent local overheating. At the same time, in order to improve the heat dissipation of the circuit board 14, the second side 142 is provided with the power generation device 16 and the heat sink 17.

[0049] The fan 15 is used to deliver air to the power device 18 arranged at the first side 141, wherein the power device 18 generates a heat area at the corresponding position of the second side 142 after heat generation; specifically, the power device 18 generates a large amount of heat during operation, and therefore, an effective heat dissipation system is crucial for maintaining the normal operation of the power device 18 and prolonging the service life thereof. The heat transfer efficiency from the power device 18 to the surrounding environment can be effectively improved.

[0050] The power generation device 16 includes oppositely arranged hot ends and cold ends, the hot ends are in contact with the heat area, and the cold ends are in contact with the heat sink 17. Specifically, the power generation device 16 utilizes the Seebeck effect to establish a thermoelectric electromotive force by the migration of multiple electron holes or holes from the hot end to the cold end inside the semiconductor, so as to realize the direct conversion of heat energy into electric energy. In the thermoelectric device, the p-type material and the n-type material are designed in an electric series and thermal parallel “π” type structure to ensure the required output power. The heat dissipation design is crucial for maintaining the temperature difference between the hot ends and the cold ends. In the present application, the heat area is formed at the corresponding position of the second side 142 after the heat generation of the power device 18, the hot ends of the power generation device 16 are in contact with the heat area, and the cold ends are in contact with the heat sink, so as to realize the high-efficiency and high-reliability thermoelectric conversion. When the refrigeration equipment is operated, the power device 18 generates a relatively high heat, the temperature at the heat area is relatively high, and the temperature at the heat area will reach more than 100 degrees Celsius, and the temperature at the heat sink 17 is relatively low. Since the hot ends of the power generation device 16 are in contact with the heat area, and the cold ends are in contact with the heat sink 17, the power generation device 16 is a semiconductor thermoelectric power generation sheet, so that a relatively large temperature difference will be generated at both ends of the semiconductor thermoelectric power generation sheet, a voltage is generated, and electric energy is generated by the semiconductor thermoelectric power generation to drive the fan 15 to work. The fan 15 blows air to the power device 18 to accelerate the air flow at the power device 18, so as to reduce the temperature of the power device 18, thereby avoiding the thermal damage of the power device 18, and prolonging the service life of the circuit board 14.

[0051] In some specific embodiments, the air outlet of the fresh air fan 11 is provided with a supply fan, one side of the supply fan is communicated with the main ventilation duct, and a branch duct for entering the outside is arranged on the main ventilation duct.

[0052] The end of the main ventilation duct is fixedly provided with an air flow rate sensor for monitoring the air flow rate and transmitting the collected flow rate signal to the fresh air fan main controller, which is used to control the increase of the speed of the air supply fan when the flow rate is greater than the preset flow rate threshold, and to control the decrease of the speed of the air supply fan when the flow rate is lower than the preset flow rate threshold. The air flow rate sensor can be used to monitor the air flow in the refrigeration equipment, maintain the constant temperature and humidity inside the refrigeration equipment, and ensure uniform distribution of cold air by adjusting the air flow, so as to avoid local overcooling or overheating. By precisely controlling the air flow rate, the energy efficiency of the refrigeration equipment can be improved. For example, if the air flow rate sensor detects that the air flow has been sufficient to distribute the cold air, a signal can be sent to reduce the operation of the fan, thereby saving energy. Specifically, the types of air flow rate sensors include: MEMS gas mass flow sensor, hot-wire or hot-film air flow sensor, Karman vortex air flow sensor, ultrasonic air flow sensor, and piezoresistive flow sensor. The MEMS gas mass flow sensor is made of a micro-electro-mechanical system (MEMS) flow sensing chip, which has the characteristics of high precision, high sensitivity, and high stability, and relatively low cost. The hot-wire or hot-film air flow sensor works on the principle of thermistor. When air flows through the thermistor element, the air flow will carry away heat, causing the temperature of the thermistor element to drop. By measuring the change in temperature of the thermistor element, the sensor can determine the size of the gas flow rate or flow. The hot-wire sensor uses a thin wire or a thermally sensitive film as a heat source, while the hot-film sensor uses a planar film resistor as a heating element. The Karman vortex air flow sensor utilizes the Karman vortex street phenomenon, which is formed by two columns of vortices behind a column in a fluid. The frequency of vortex appearance can be used to measure the flow rate. The ultrasonic air flow sensor measures gas flow by sending and receiving ultrasonic signals. They can detect the direction and rate of gas flow, providing more comprehensive flow information for the system, and have the characteristics of high precision and low power consumption. The piezoresistive flow sensor utilizes the piezoresistive effect, which is the change in resistivity of a material under pressure. By monitoring the air flow in the refrigeration equipment through the air flow rate sensor, proper air circulation and temperature distribution can be ensured, thereby improving the energy efficiency of the refrigeration equipment and the preservation effect of food.

[0053] In some specific embodiments, referring to Figure 4 A plurality of through-holes are provided on the circuit board 14, and the back surface of the circuit board 14 is provided with a power device 18. Specifically, part of the heat generated by the power device 18 during operation can be transmitted to the jumper 19 on the front surface of the circuit board 14 through the through-hole covered by the jumper 19. The jumper 19 has a large heat dissipation area, which can quickly guide the heat generated by the corresponding power device 18 to the air, significantly improving the heat dissipation efficiency of the circuit board 14.

[0054] The front surface of the circuit board 14 is provided with a plurality of jumpers 19, two ends of each jumper 19 are welded to the via holes respectively, and each jumper 19 covers the via hole; specifically, the jumper 19 is composed of two parts: one part is fixed on the circuit board 14 and is composed of two or more metal jumpers; the other part is a jumper 19 cap, which is a movable part, the outer layer is insulating plastic, and the inner layer is conductive material, which can be inserted on the jumper 19 needle to connect the two jumper 19 needles.

[0055] Each jumper 19 is arranged on the transverse two sides or the longitudinal two sides of a corresponding power device 18, so that at least part of the heat generated by the corresponding power device 18 is transmitted to the corresponding jumper 19 via the via hole covered by the corresponding jumper 19; and the surface area of each jumper 19 is a preset multiple of the area of the corresponding power device 18. The jumper 19 is used for heat dissipation, which significantly improves the heat dissipation efficiency of the circuit board 14, and the surface area of the jumper 19 can be determined according to the area of the corresponding power device 18 to optimize the heat dissipation effect of the jumper 19.

[0056] In some specific embodiments, each jumper 19 includes:

[0057] Two end pin segments, the two end pin segments are welded to the front surface of the circuit board 14 respectively;

[0058] A cross-connection segment, the cross-connection segment is used to connect the two end pin segments and arches away from the circuit board 14. Specifically, the two end pin segments are welded to the front surface of the circuit board 14 respectively, that is, the two ends of each jumper 19 are welded to the front surface of the circuit board 14 by the two end pin segments of each jumper 19. The cross-connection segment connects the two end pin segments and arches away from the circuit board 14, so as to increase the heat dissipation area of the frequency conversion control board while making the structure compact.

[0059] In some specific embodiments, the power device is a semiconductor thermoelectric power generation sheet, and the power device 18 is electrically connected with the fan 15 and is used to supply power to the fan 15. Specifically, the power device 18 is a semiconductor thermoelectric power generation sheet, so that a large temperature difference is generated at the two ends of the semiconductor thermoelectric power generation sheet to generate a voltage, and the electric energy generated by the semiconductor thermoelectric power generation drives the fan 15 to work, the fan 15 blows air to the power device 18 to accelerate the air flow at the power device 18, so as to reduce the temperature of the power device 18, thereby avoiding thermal damage of the power device 18, thereby prolonging the service life of the circuit board 14.

[0060] Please refer to Figure 5The embodiment of the present application provides a refrigeration equipment, and the refrigeration equipment comprises the cooling device 1. The cooling device 1 is arranged on the refrigeration equipment, the cooling device 1 is connected with the electric appliance box shell 13 provided with the circuit board 14 through the fresh air fan 11 and the air conveying pipeline 12, the fresh air fan 11 conveys the cold air in the chamber of the refrigeration equipment to the circuit board 14 through the air conveying pipeline 12, the cooling of the circuit board 14 is realized, the recycling of the cold air in the chamber is realized, the temperature in the circuit board 14 is reduced, and the refrigeration efficiency of the refrigeration equipment is improved.

[0061] In some specific embodiments, please refer to Figure 5 The refrigeration equipment further comprises a refrigeration equipment main body 2 and a first door body 3.

[0062] The refrigeration equipment main body 2 is provided with a fan, an air duct and a first air outlet communicated with the air duct, and the fan is used for guiding the airflow into the air duct.

[0063] The first door body 3 is connected to the refrigeration equipment main body 2, and the surface of the first door body 3, which produces condensation under the action of temperature difference, faces the first air outlet. The fan can guide the airflow into the air duct, the airflow is blown out from the first air outlet through the air duct, and the airflow can be blown on the surface of the first door body 3, which produces condensation, in front of the first air outlet, so that the condensation on the surface of the first door body 3 can be reduced under the drying of the airflow. Specifically, in the closed state, the surface of the first door body 3, which produces condensation, faces the first air outlet, so that the condensation can be dried for a long time and removed more thoroughly.

[0064] In some specific embodiments, please refer to Figure 5 The refrigeration equipment main body 2 further comprises a second door body 4, the second door body 4 is oppositely arranged with the first door body 3, and the second door body 4 forms the first air outlet.

[0065] The first door body 3 is provided with a second air outlet communicated with the air duct, and the surface of the second door body 4, which produces condensation under the action of temperature difference, faces the second air outlet. Specifically, the refrigeration equipment main body 2 further comprises an openable and closable second door body 4, the second door body 4 is oppositely arranged with the first door body 3, for example, left-right opposite or up-down opposite, and the second door body 4 forms the first air outlet. Since the distance between the first door body 3 and the second door body 4 is small, the first air outlet is arranged on the second door body 4, so that the airflow can be directly blown to the surface of the first door body 3, which is prone to produce condensation, and the effect of removing the condensation is better. The second door body 4 is arranged in a rectangular structure, as a door body of a second storage space, and the surface of the second door body 4, which is opposite to the first door body 3, is more prone to produce condensation under the action of temperature difference. Therefore, the second air outlet can be arranged on the surface of the first door body 3, which is opposite to the second door body 4. In this way, the second air outlet arranged on the first door body 3 can directly blow the airflow to the surface of the second door body 4, which is prone to produce condensation, and the effect of removing the condensation is better.

[0066] The application discloses a cooling device of a refrigeration equipment and the refrigeration equipment. The cooling device comprises a fresh air fan, a wind conveying pipeline and a circuit board. The fresh air fan is arranged above the inner wall of the refrigeration chamber of the refrigeration equipment and is used for circulating the air in the chamber of the refrigeration equipment and the air outside. The circuit board is arranged in the electrical box shell of the refrigeration equipment. One end of the wind conveying pipeline is communicated with the fresh air fan, and the other end is communicated with the electrical box shell. The wind conveying pipeline is used for conveying the cold air blown by the fresh air fan into the electrical box shell. The fresh air fan is connected with the electrical box shell provided with the circuit board through the wind conveying pipeline. The fresh air fan conveys the cold air in the chamber of the refrigeration equipment to the circuit board through the wind conveying pipeline, so that the circuit board is cooled, the cold air in the chamber is recycled, and the temperature in the circuit board is reduced.

[0067] The above is only optional embodiments of the application, and is not used to limit the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A cooling device of a refrigerating apparatus, characterized by comprising: The new fan (11), the air conveying pipeline (12) and the circuit board (14) are included. The new fan (11) is arranged above the inner wall of the refrigeration chamber of the refrigeration equipment, and is used for circulating the air in the chamber of the refrigeration equipment with the air outside. The circuit board (14) is arranged in the electrical box shell (13) of the refrigeration equipment. One end of the air conveying pipeline (12) is communicated with the new fan (11), and the other end is communicated with the electrical box shell (13), and the air conveying pipeline (12) is used for conveying the cold air blown out by the new fan (11) into the electrical box shell (13).

2. A cooling device for a refrigeration appliance according to claim 1, characterised in that, The electrical box shell (13) is provided with a temperature sensor, which is used for detecting the temperature in the electrical box shell (13) and transmitting the collected temperature signal to the new fan main controller. When the temperature is greater than the preset temperature threshold, the new fan main controller is used for controlling the new fan (11) to start; when the temperature is lower than the preset temperature threshold, the new fan (11) is controlled to be closed.

3. A cooling device for a refrigeration appliance according to claim 1, characterized in that The circuit board (14) includes a first side (141) and a second side (142) arranged opposite to each other, the first side (141) is provided with a fan (15), and the second side (142) is provided with a power generating device (16) and a heat sink (17). The fan (15) is used for conveying air to the power device (18) arranged on the first side (141), wherein the power device (18) generates heat and forms a heating area at the corresponding position on the second side (142). The power generating device (16) includes a hot end and a cold end arranged opposite to each other, the hot end is in contact with the heating area, and the cold end is in contact with the heat sink (17).

4. A cooling device for a refrigeration appliance according to claim 2, characterised in that, An air supply fan is arranged at the air outlet of the new fan (11), one side of the air supply fan is communicated with the main air conveying pipeline, and a branch pipeline for entering the outside is arranged on the main air conveying pipeline. An air flow rate sensor is fixedly arranged at the end of the main air conveying pipeline, which is used for monitoring the air flow rate and transmitting the collected flow rate signal to the new fan main controller. When the flow rate is greater than the preset flow rate threshold, the new fan main controller is used for controlling the rotation speed of the air supply fan to increase; when the flow rate is lower than the preset flow rate threshold, the rotation speed of the air supply fan is controlled to decrease.

5. A cooling device for a refrigeration appliance according to claim 3, wherein A plurality of through holes penetrating through the circuit board (14) are arranged on the circuit board (14), and the power device (18) is mounted on the back surface of the circuit board (14). A plurality of jumpers (19) are arranged on the front surface of the circuit board (14), both ends of each jumper (19) are welded to the through hole, and each jumper (19) covers the through hole. Each jumper (19) is arranged on the transverse two sides or the longitudinal two sides of a corresponding power device (18), so that at least part of the heat generated by the corresponding power device (18) is transmitted to the corresponding jumper (19) through the through hole covered by the corresponding jumper (19); and the surface area of each jumper (19) is a preset multiple of the area of the surface of the corresponding power device (18).

6. A cooling device for a refrigeration appliance according to claim 5, characterised in that, Each of the jumpers (19) comprises: two end pin segments welded to the front face of the circuit board (14) respectively; a crosslink segment connecting the two end pin segments and arched away from the circuit board (14).

7. A cooling device for a refrigeration appliance according to claim 3, wherein The power generation device (16) is a semiconductor thermoelectric power generation sheet, and is electrically connected with the fan (15) and used for powering the fan (15).

8. A refrigeration appliance characterized in that, The refrigeration equipment comprises the cooling device (1) of the refrigeration equipment according to any one of claims 1-7.

9. A refrigeration appliance as claimed in claim 8, characterised in that, The refrigeration equipment further comprises a refrigeration equipment main body (2) and a first door body (3); The refrigeration equipment main body (2) is provided with a fan, an air duct and a first air outlet communicated with the air duct, and the fan is used for guiding air flow into the air duct; The first door body (3) is connected to the refrigeration equipment main body (2), and a surface of the first door body (3) generating condensation due to temperature difference is faced to the first air outlet.

10. A refrigeration appliance as defined in claim 9, wherein, The refrigeration equipment main body (2) further comprises a second door body (4) arranged opposite to the first door body (3), and the second door body (4) forms the first air outlet; The first door body (3) is provided with a second air outlet communicated with the air duct, and a surface of the second door body (4) generating condensation due to temperature difference is faced to the second air outlet.

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