Heat dissipation structure and refrigeration equipment

Abstract

The utility model discloses a heat dissipation structure and refrigeration plant for the heat dissipation of heating device, its characterized in that, the heat dissipation structure includes: at least two parallelly arranged heat dissipation fan, the heat dissipation fan is used for accelerating the flow of the heating device around airflow, temperature sensor, temperature sensor is used for detecting each heat dissipation fan's temperature, and, control unit, temperature sensor with Control unit signal connection, the control unit according to the detection information of temperature sensor controls each heat dissipation fan's working condition. The utility model discloses through the parallel arrangement of first heat dissipation fan and second heat dissipation fan and forms the collaborative heat dissipation system, improves the cooling effect of heating device under the condition of high ambient temperature, high load. The scheme through dynamic allocation heat dissipation fan work load, avoided the material aging and structural deformation problem caused by the surface temperature of heat dissipation fan, support and adjacent component too high.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, and in particular to heat dissipation structures and refrigeration equipment. Background Technology

[0002] Currently popular built-in air-cooled refrigerators for home use typically employ an external condenser with a forced convection fan to improve condenser heat dissipation efficiency. However, under high ambient temperature and high load conditions, during the cooling phase before the compressor starts running (e.g., 12 hours), the high system load leads to a significant increase in compressor shell temperature, condenser temperature, and compressor compartment air temperature.

[0003] Such high-temperature environments may cause the surface temperature of the condenser cooling fan and its support to exceed the design temperature of the components, thereby affecting the reliability of the entire machine. While various condenser heat dissipation structures and cooling fan control methods exist in the current technology, effective solutions are still lacking for the heat dissipation problems of condenser cooling fans and their supports under high load and high ambient temperature environments. Utility Model Content

[0004] To solve at least one of the above-mentioned technical problems, on the one hand, this utility model provides a heat dissipation structure that utilizes multiple cooling fans to operate in coordination, thereby ensuring the heat dissipation effect while preventing the temperature of the cooling fans themselves and their auxiliary components from becoming too high.

[0005] On the other hand, this utility model also proposes a refrigeration device having the aforementioned heat dissipation structure.

[0006] The technical solution adopted in this utility model is to design a heat dissipation structure for heat dissipation of heat-generating devices, wherein the heat dissipation structure includes:

[0007] At least two cooling fans arranged in parallel, the cooling fans being used to accelerate the airflow around the heat-generating device;

[0008] Temperature sensor, the temperature sensor being used to detect the temperature of each of the cooling fans; and,

[0009] The control unit is connected to the temperature sensor via a signal, and the control unit controls the operating status of each cooling fan based on the detection information from the temperature sensor.

[0010] In some embodiments, the number of cooling fans is two, and the two cooling fans are arranged side by side in the direction of vertical airflow.

[0011] In some embodiments, an ambient temperature sensor is also included for detecting the ambient temperature. The ambient temperature sensor is signal-connected to the control unit, and the control unit controls the operating state of the cooling fan based on the detection information from the ambient temperature sensor.

[0012] In some embodiments, the number of cooling fans is two, and the two cooling fans are arranged side by side in the airflow direction.

[0013] In some embodiments, the cooling fan is located on the same side as the heat-generating device.

[0014] In some embodiments, the cooling fans are located on opposite sides of the heat-generating device.

[0015] The refrigeration equipment includes the aforementioned heat dissipation structure, wherein the heat-generating device is a heat exchanger.

[0016] In some embodiments, the heating element is a condenser located within the compressor compartment.

[0017] In some embodiments, the cooling fans are located side-by-side between the compressor and the condenser.

[0018] In some embodiments, the compressor is electrically connected to the control unit, and the control unit controls the operating state of the cooling fan according to the compressor's on / off state.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention utilizes a parallel arrangement of a first and a second cooling fan to form a synergistic cooling system, improving the cooling effect of heat-generating components under high ambient temperature and high load conditions. This solution dynamically distributes the workload of the cooling fans, avoiding material aging and structural deformation caused by excessively high surface temperatures of the cooling fans, brackets, and adjacent components. It is suitable for embedded air-cooled refrigerators under high ambient temperature and high load conditions, significantly improving product reliability and lifespan. By installing temperature sensors on the surface of the cooling fans and combining them with a multi-level speed control strategy, intelligent operation of the cooling fans under high load and high ambient temperature conditions is achieved, effectively reducing their surface temperature and improving the stability and reliability of the entire machine. Attached Figure Description

[0021] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings. To illustrate the details and facilitate understanding of its principles, the drawings are not necessarily to scale, and similar reference numerals may describe similar components in different views. The accompanying drawings generally illustrate the embodiments discussed herein by way of example and not limitation. Wherein:

[0022] Figure 1 This is a schematic diagram of the compressor compartment in Example 1.

[0023] Figure 2 This is a schematic diagram of the control system module of Embodiment 1.

[0024] Figure 3 This is a flowchart illustrating the refrigerator control method of Example 1.

[0025] Figure 4 It is a schematic diagram of two fans arranged side by side in the airflow direction on one side of the condenser.

[0026] Figure 5 It is a schematic diagram of two fans arranged side by side on both sides of the condenser in the direction of airflow.

[0027] In the diagram, 1 is the first cooling fan; 2 is the second cooling fan; 3 is the first temperature sensor; 4 is the second temperature sensor; 5 is the control unit; 6 is the compressor; 7 is the ambient temperature sensor; and 8 is the condenser. Detailed Implementation

[0028] The following are specific embodiments of this utility model, and the technical solution of this utility model will be further described with reference to the accompanying drawings. However, this utility model is not limited to these embodiments, and the following embodiments do not limit the utility model involved in the claims. In addition, all combinations of features described in the embodiments are not necessarily necessary for the solution of the utility model.

[0029] The principle and structure of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0030] Example 1

[0031] like Figure 1 , 2 As shown in Figure 3, a heat dissipation structure is used for heat dissipation of heat-generating devices. The heat dissipation structure includes at least two parallelly arranged cooling fans, a temperature sensor, and a control unit 5. The cooling fans are used to accelerate the airflow around the heat-generating devices; the temperature sensor is used to detect the temperature of each cooling fan; the temperature sensor is signal-connected to the control unit 5, and the control unit 5 controls the operating state of each cooling fan based on the detection information from the temperature sensor. In this embodiment, there are two cooling fans, namely a first cooling fan 1 and a second cooling fan 2.

[0032] This embodiment uses an embedded air-cooled refrigerator as an example for detailed explanation. The heating device is the condenser located in the compressor compartment of the embedded air-cooled refrigerator. The temperature sensor can be, for example, an infrared temperature sensor, a thermocouple, etc., as long as it is convenient to detect the temperature of the cooling fan. The temperature sensor for detecting the temperature of the first cooling fan 1 is the first temperature sensor 3, and the temperature sensor for detecting the temperature of the second cooling fan 2 is the second temperature sensor 4.

[0033] The control unit 5 mentioned here refers to an electronic device or other device or system capable of automated control that can control other devices by processing and judging received signals or instructions through software. For example, the control unit 5 can be a controller such as a central processing unit (CPU), a microcontroller unit (MCU), a system on chipset (SoC), an application-specific integrated circuit (ASIC), a programmable logic device (PLD), a microcontroller, an industrial control computer, or a combination thereof. Of course, it can also be a control device or system with program editing function of the refrigeration equipment itself. The communication between the control unit 5 and the temperature sensor to collect the detected data and then control the operation of electrical equipment such as the cooling fan or compressor 6 is a conventional technology, which is not difficult for those skilled in the art to implement. Therefore, the specific electronic connection structure and control method will not be described in detail here.

[0034] The heat dissipation structure in this embodiment forms a collaborative heat dissipation system through a first cooling fan 1 and a second cooling fan 2 arranged in parallel, which is used to improve the cooling effect of heat-generating devices under high ambient temperature and high load conditions. During operation, a temperature sensor monitors the temperature data of the two cooling fans and their surrounding environment in real time and transmits the detection signal to the control unit 5. The control unit 5 automatically switches the operating state of the two cooling fans according to the temperature change trend and preset threshold, so that the two work alternately. When the first cooling fan 1 continues to run until its surface temperature approaches the limit, the control unit 5 stops the first cooling fan 1 and starts the second cooling fan 2. At this time, the second cooling fan 2 not only undertakes the heat dissipation task, but also passively cools the first cooling fan 1 through airflow, reducing the temperature of its body and support. This cycle effectively prevents the overheating of a single cooling fan due to prolonged high load operation. Because the two cooling fans are arranged in parallel, the airflow field is more uniform, the overall heat dissipation efficiency is improved, and the heat exchange of the condenser is more complete. This solution dynamically allocates the workload of the cooling fans, avoiding material aging and structural deformation caused by excessively high surface temperatures of the cooling fans, brackets, and adjacent components. This significantly improves the operational stability and lifespan of the refrigerator in high-temperature embedded environments. Simultaneously, the intelligent control strategy reduces the average operating time of the cooling fans while meeting heat dissipation requirements, thus reducing energy consumption and noise, achieving a balance between energy saving and reliability.

[0035] Furthermore, the two cooling fans are arranged side-by-side in the direction perpendicular to the airflow. This side-by-side arrangement allows for a more uniform distribution of airflow in the vertical direction, improving the overall heat exchange efficiency of the condenser or heat-generating components and enabling the two fans to dissipate heat from each other. This structure reduces localized overheating areas, enhances airflow coverage, thereby improving heat dissipation and maintaining a stable and balanced system temperature.

[0036] Furthermore, the cooling fans are positioned side-by-side between the compressor 6 and the condenser. This creates a forced airflow channel during compressor 6 operation, promptly guiding the heat generated by the compressor 6 to the condenser and accelerating its heat dissipation. This arrangement effectively reduces temperature buildup within the compressor compartment, improves condensation efficiency, and prevents adverse effects of high temperatures on the cooling fans and surrounding components.

[0037] Furthermore, the compressor 6 is electrically connected to the control unit 5, and the control unit 5 controls the operating state of the cooling fan according to the on / off state of the compressor 6. The compressor 6 is electrically connected to the control unit 5, and the control unit 5 can intelligently adjust the start and stop of the cooling fan according to the on / off state of the compressor 6.

[0038] Furthermore, it also includes an ambient temperature sensor 7 for detecting the ambient temperature. The ambient temperature sensor 7 is signal-connected to the control unit 5, and the control unit 5 controls the operating state of the cooling fan based on the detection information from the ambient temperature sensor 7. The ambient temperature sensor 7 is provided to detect the ambient temperature in real time and transmit the detection signal to the control unit 5. The control unit 5 automatically adjusts the start / stop or speed of the cooling fan according to changes in ambient temperature, increasing heat dissipation capacity at high ambient temperatures and reducing operating intensity at low ambient temperatures, thereby achieving dynamic temperature control and balancing energy saving and stable equipment operation. Specifically, temperature sensors Ta and Tb can be respectively installed on the surfaces of the first and second cooling fans to collect the real-time temperatures of the first and second cooling fans.

[0039] The preset temperature thresholds Ta1, Ta2 (Ta2>Ta1) and Tb1, Tb2 (Tb2>Tb1) are two temperature limits for the first and second cooling fans, respectively; the first and second cooling fans are respectively equipped with high operating speeds Ha1, Hb1 and low operating speeds Ha2, Hb2.

[0040] When the ambient temperature is ≥H1, within h hours before the refrigerator is first powered on (the preset value is h1), after the compressor starts, the first cooling fan will be turned on and run at high speed Ha1.

[0041] When the temperature sensor Ta detects that the temperature of the first cooling fan has risen to or exceeded Ta1, the first cooling fan is switched to a low speed Ha2, while the second cooling fan is switched on to a high speed Hb1.

[0042] When the temperature sensor Ta detects that the temperature of the first cooling fan rises to or exceeds Ta2, the first cooling fan is switched off and does not operate.

[0043] When the temperature sensor Tb detects that the temperature of the second cooling fan rises to or exceeds Tb1, the second cooling fan operates at a reduced low speed Hb2.

[0044] When the temperature sensor Tb detects that the temperature of the second cooling fan rises to or exceeds Tb2, the second cooling fan is switched off and does not operate.

[0045] If the temperature Ta of the first cooling fan is greater than or equal to Ta2 at this time, the compressor is powered off.

[0046] If the temperature Ta of the first cooling fan satisfies Ta1 ≤ Ta ≤ Ta2 at this time, the first cooling fan is switched on and operates at a low speed Ha2.

[0047] If the temperature Ta of the first cooling fan is less than Ta1 at this time, the first cooling fan is switched on and operates at a high speed Ha1.

[0048] According to this rule, the first cooling fan and the second cooling fan operate alternately until the period h1.

[0049] After the compressor operates for the first time h1, both the first cooling fan and the second cooling fan operate at high speeds Ha1 and Hb1 respectively until the compressor stops.

[0050] After the compressor restarts, the first cooling fan and the second cooling fan still operate at high speeds Ha1 and Hb1 respectively.

[0051] Further, the ambient temperature H1 can be set to above 35°C, and h1 can be set to 12 hours, so as to adapt to the embedded application scenario with high ambient temperature and high load.

[0052] Further, the temperature sensors Ta and Tb can be infrared temperature measurement sensors or contact thermocouples, which are used for collecting real-time surface temperature data of the cooling fans.

[0053] Further, the set temperature thresholds can be set as: Ta1=60°C, Ta2=70°C, Tb1=60°C, Tb2=70°C.

[0054] Further, the rotation speeds of the first cooling fan and the second cooling fan can be set as: high speeds Ha1=1500rpm, Hb1=1500rpm and low speeds Ha2=800rpm, Hb2=800rpm.

[0055] Further, the control method can be implemented by a microcontroller or PLC, and integrated with a refrigerator control system to realize automatic control.

[0056] In other words, during the time h1 before the compressor is first powered on, the switching logic of the cooling fan at different temperatures is shown in the table below (where Fa represents the first cooling fan and Fb represents the second cooling fan):

[0057]

[0058] Example 2

[0059] like Figure 4 As shown in this embodiment, two cooling fans are arranged side-by-side in the airflow direction, causing their output airflow to overlap and form a larger overall airflow, thereby enhancing airflow speed and heat dissipation coverage. This arrangement effectively improves the heat exchange capacity of the condensation area, reduces local temperature rise, and improves heat dissipation uniformity.

[0060] Furthermore, the cooling fan is located on the same side as the heat-generating device. Positioning the cooling fan on the same side of the heat-generating device allows airflow to directly blow onto the heat-generating area and exit in a single direction, forming a highly efficient directional heat dissipation channel. This helps to quickly remove the heat accumulated around the heat-generating device, thereby improving overall heat dissipation efficiency.

[0061] Example 3

[0062] like Figure 5 As shown, the cooling fans are located on opposite sides of the heat-generating device. The two cooling fans, positioned on opposite sides of the heat-generating device, form a through-flow airflow channel, allowing air to enter from one side and exit from the other, achieving bidirectional convection cooling. This significantly enhances airflow penetration, rapidly removes heat, improves heat dissipation efficiency, and maintains a balanced and stable temperature for the heat-generating device.

[0063] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0064] Although this document uses a number of technical terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention. The order of actions, steps, etc., in the apparatus and methods shown in the specification and drawings can be implemented in any order unless a specific order is explicitly specified, and as long as the output of a preceding process is not used in a subsequent process. Similar sequential terms used for descriptive convenience (e.g., "firstly," "next," "secondly," "again," "then," etc.) do not imply that the actions must be performed in such an order.

[0065] Those skilled in the art will understand that all directional references (e.g., above, below, up, up, down, down, top, bottom, left, right, vertical, horizontal, etc.) are used descriptively in the drawings to aid the reader's understanding and do not imply (e.g., a limitation on the scope of the invention as defined by the appended claims) a limitation on the scope of the invention as defined by the appended claims. They are merely for the purpose of facilitating the description of the application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation. The directional terms "inside" and "outside" refer to inside or outside relative to the outline of the respective components themselves.

[0066] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0067] Additionally, some vague terms (e.g., substantially, certain, generally, etc.) may refer to slight inaccuracies or minor deviations in conditions, quantities, values, or dimensions, some of which are within manufacturing tolerances or limits. It should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components; unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

Claims

1. A heat dissipation structure for heat dissipation of heat-generating devices, characterized in that, The heat dissipation structure includes: At least two cooling fans arranged in parallel, the cooling fans being used to accelerate the airflow around the heat-generating device; Temperature sensor, the temperature sensor being used to detect the temperature of each of the cooling fans; and, The control unit is connected to the temperature sensor via a signal, and the control unit controls the operating status of each cooling fan based on the detection information from the temperature sensor.

2. The heat dissipation structure according to claim 1, characterized in that, The number of cooling fans is two, and the two cooling fans are arranged side by side in the direction of vertical airflow.

3. The heat dissipation structure according to claim 1, characterized in that, It also includes an ambient temperature sensor for detecting ambient temperature, which is signal-connected to the control unit. The control unit controls the operating status of the cooling fan based on the detection information from the ambient temperature sensor.

4. The heat dissipation structure according to claim 1, characterized in that, The number of cooling fans is two, and the two cooling fans are arranged side by side in the airflow direction.

5. The heat dissipation structure according to claim 4, characterized in that, The cooling fan is located on the same side as the heat-generating device.

6. The heat dissipation structure according to claim 4, characterized in that, The cooling fans are located on opposite sides of the heat-generating device.

7. A refrigeration device, characterized in that, It includes the heat dissipation structure as described in any one of claims 1 to 6, wherein the heat-generating device is a heat exchanger.

8. The refrigeration equipment according to claim 7, characterized in that, The heating element is a condenser located inside the compressor compartment.

9. The refrigeration equipment according to claim 8, characterized in that, The cooling fans are positioned side-by-side between the compressor and the condenser.

10. The refrigeration equipment according to claim 9, characterized in that, The compressor is electrically connected to the control unit, and the control unit controls the working state of the cooling fan according to the compressor's on / off state.

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