Cold and hot controller with source power factor correction
The cooling and heating controller with active power factor correction addresses poor heat dissipation by using a heat-conducting plate and heat sink with a cooling medium, ensuring the controller's reliability and functionality in hot environments.
Patent Information
- Application Number
- CN202420963373.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-07
AI Technical Summary
Existing controllers in fresh food cabinets suffer from poor heat dissipation, leading to damage and failure when used in hot environments, compromising the preservation, refrigeration, and freezing functions.
A cooling and heating controller with active power factor correction, featuring a heat-conducting plate and heat sink for heat absorption and dissipation using a cooling medium, combined with an active power factor correction module to reduce power loss and enhance energy efficiency.
The solution effectively dissipates heat, preventing overheating and damage to the circuit board, ensuring the controller's longevity and maintaining the fresh food cabinet's functions.
Smart Images
Figure CN222283796U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of controllers, in particular to a cooling and heating controller with active power factor correction. Background Art
[0002] A fresh food cabinet is a refrigeration device that has a fresh-keeping function room, a refrigerating function room, and a freezing function room. The temperature of the fresh-keeping function room, the refrigerating function room, and the freezing function room are adjusted by a hot and cold controller (thermostat) in the fresh food cabinet to meet the fresh-keeping function, refrigerating function, and freezing function. However, when the fresh food cabinet is used in a hot environment, the cabinet body will heat up significantly due to the large temperature difference between the inside and outside of the fresh food cabinet. At this time, there is a problem that the controller in the fresh food cabinet is damaged due to poor heat dissipation, resulting in the fresh food cabinet being unable to guarantee the preservation function, refrigerating function, and freezing function, causing the items in the fresh food cabinet to deteriorate and rot. Utility Model Content
[0003] The main purpose of the utility model is to provide a cooling and heating controller with active power factor correction, aiming to solve the problem of poor heat dissipation effect of the existing controller.
[0004] To achieve the above purpose, the utility model provides a cooling and heating controller with active power factor correction, comprising:
[0005] case;
[0006] An operation panel, mounted on the housing;
[0007] a circuit board, installed in the housing, electrically connected to the operation panel, and provided with an active power factor correction module; and
[0008] The heat conduction component comprises a heat conduction plate and a heat sink. The heat conduction plate is mounted on the housing for mounting the circuit board. The heat sink is mounted on a side of the heat conduction plate away from the circuit board for circulation of a cooling medium.
[0009] In one embodiment, the heat sink includes a medium-passing pipe, and the medium-passing pipe is fixed to the heat-conducting plate.
[0010] In one embodiment, a surface of the medium passage pipe facing the heat conducting plate is open.
[0011] In one embodiment, the medium-passing pipe is integrally formed with the heat-conducting plate, or is welded to the heat-conducting plate.
[0012] In one embodiment, the longitudinal cross-section of the medium-passing pipe is configured as a rectangular structure.
[0013] In one embodiment, there are a plurality of medium-passing pipes, and the heat-conducting component further includes a header, which is used to be connected to the plurality of medium-passing pipes.
[0014] In one embodiment, the collector is fixed to the heat conducting plate, and one end of the collector facing the heat conducting plate is open.
[0015] In one embodiment, a plurality of ventilation holes and cold medium through holes are provided on the shell, and the shell is connected to the operation panel by screw locking.
[0016] In one embodiment, the active power factor correction module includes a detection and control unit, a converter, a capacitor, and a switching element, wherein the detection and control unit is used to detect input current and voltage and calculate the power factor, the converter is used to convert non-ideal AC input current into DC, and the switching element is used to achieve precise control of the current waveform.
[0017] In one embodiment, the heating and cooling controller with active power factor correction further includes a power supply, and the power supply is installed on the heat conducting plate.
[0018] The technical solution of the utility model adopts the method of installing the circuit board on the heat-conducting plate, so that the heat generated by the circuit board during the use of the controller can be absorbed by the heat-conducting plate, and at the same time a heat sink is installed on the side of the heat-conducting plate away from the circuit board, wherein the heat sink is used for circulation of cold medium, and the heat on the heat-conducting plate can be dissipated outwards through the cooperation of the heat sink and the cold medium, thereby achieving a continuous cooling effect on the circuit board and preventing the circuit board from being overheated and damaged. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0020] Figure 1 A schematic diagram of the structure of an embodiment of a cooling and heating controller with active power factor correction provided by the utility model;
[0021] Figure 2 for Figure 1 Schematic diagram of the internal structure;
[0022] Figure 3 The present invention is a schematic structural diagram of an embodiment of a heat conduction component in a cold and hot controller with active power factor correction provided by the present invention.
[0023] Description of Figure Numbers:
[0024] 100, housing; 110, ventilation hole; 120, cold medium through hole;
[0025] 200, operation panel;
[0026] 300, circuit board;
[0027] 400, heat conduction component; 410, heat conduction plate; 420, heat sink; 421, medium pipe; 422, collecting pipe.
[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.
[0032] A fresh food cabinet is a refrigeration device that has a fresh-keeping function room, a refrigerating function room, and a freezing function room. The temperature of the fresh-keeping function room, the refrigerating function room, and the freezing function room are adjusted by a hot and cold controller in the fresh food cabinet to meet the fresh-keeping function, refrigerating function, and freezing function. However, when the fresh food cabinet is used in a hot environment, the cabinet body will heat up significantly due to the large temperature difference between the inside and outside of the fresh food cabinet. At this time, there is a problem that the controller in the fresh food cabinet is damaged due to poor heat dissipation, resulting in the fresh food cabinet being unable to guarantee the fresh-keeping function, refrigerating function, and freezing function, causing the items in the fresh food cabinet to deteriorate and rot.
[0033] The utility model provides a heating and cooling controller with active power factor correction, which is provided with a temperature sensor, wherein the temperature sensor is responsible for monitoring the temperature of the environment or equipment and converting the temperature into an electrical signal. In this embodiment, the temperature sensor can be a thermistor, a thermocouple, or a resistance temperature detector.
[0034] See also Figure 1 , Figure 2 In one embodiment of the utility model, the hot and cold controller with active power factor correction includes:
[0035] The housing 100 is used for installing other components.
[0036] The operation panel 200 is installed on the housing 100 , and a user can perform operations through the operation panel 200 .
[0037] The circuit board 300 is installed in the housing 100, is electrically connected to the operation panel 200, and is provided with an active power factor correction module. The active power factor correction module can improve energy utilization and reduce power loss. By reducing power loss, the generation of high heat is avoided, especially avoiding components with high resistance. By reducing power loss, the problem of accelerated aging of insulating materials and damage to equipment due to long-term overheating of components with high resistance is avoided. The heat generation of the controller of the present application is reduced, and the pressure of heat dissipation is reduced, thereby avoiding damage to the controller due to temperature, thereby solving the technical problems existing in the prior art. In this embodiment, the circuit board 300 is also provided with a signal conditioning circuit, a comparator circuit, a control logic circuit, a drive circuit, a power management circuit, a communication interface, a storage, and a protection circuit; wherein the signal conditioning circuit amplifies and filters the weak electrical signal output by the sensor and converts it into a standard signal suitable for subsequent circuit processing; the comparator circuit compares the temperature signal after signal conditioning with the preset temperature threshold to determine whether the current temperature has reached the set upper and lower limits of the temperature; the control logic circuit determines the switching state of the cooling system based on the result of the comparator; the drive circuit converts the output signal of the control logic into sufficient power to drive an external cooler or other actuator; the power management circuit provides a stable power supply for various internal parts, including circuits such as voltage stabilization, filtering, and battery management; the storage is used to store user settings, historical data records, fault codes and other information; the protection circuit includes over-temperature protection, over-current protection, short-circuit protection, etc., to ensure that the system can operate safely under abnormal conditions.
[0038] The heat conducting assembly 400 includes a heat conducting plate 410 and a heat sink 420. The heat conducting plate 410 is mounted on the housing 100 for mounting the circuit board 300. The heat sink 420 is mounted on a side of the heat conducting plate 410 away from the circuit board 300. The heat sink 420 is used for circulation of a cooling medium. In the present embodiment, by mounting the circuit board 300 on the heat conducting plate 410, the heat generated by the circuit board 300 during use of the controller can be absorbed by the heat conducting plate 410. At the same time, a heat sink 420 is mounted on a side of the heat conducting plate 410 away from the circuit board 300. The heat sink 420 is used for circulation of a cooling medium. Through the cooperation of the heat sink 420 and the cooling medium, the heat on the heat conducting plate 410 can be dissipated outward, thereby achieving a continuous cooling effect on the circuit board 300, avoiding overheating and damage to the circuit board 300, thereby avoiding overheating and damage to the controller, thereby improving the service life of the fresh-keeping cabinet and solving the technical problems existing in the prior art. In this embodiment, the cold medium can be cold air, cold water, or water, and the flow of the medium takes away the heat, thereby achieving a heat dissipation purpose. In this embodiment, in order to supply the cold medium to the heat sink 420, the user can connect a water source, or a medium source such as cold water, to the heat sink 420. In addition, the active power factor correction module can improve energy utilization and reduce power loss. By reducing power loss, the generation of high heat can be avoided and the heat dissipation intensity of the heat conducting plate 410 can be reduced.
[0039] The technical solution of the utility model is to install the circuit board 300 on the heat conducting plate 410. The heat generated by the circuit board 300 during the use of the controller can be absorbed by the heat conducting plate 410. At the same time, a heat sink 420 is installed on the side of the heat conducting plate 410 away from the circuit board 300. The heat sink 420 is used for the circulation of cold medium. Through the cooperation of the heat sink 420 and the cold medium, the heat on the heat conducting plate 410 can be dissipated outward, thereby achieving a continuous cooling effect on the circuit board 300 and preventing the circuit board 300 from being overheated and damaged.
[0040] In one embodiment, reference Figure 3 The heat sink 420 includes a medium pipe 421, which is fixed to the heat conducting plate 410, wherein the medium pipe 421 is used for circulating the cooling medium, and the specific medium pipe 421 is configured with a heat conducting material, so that the heat in the heat conducting plate 410 can be introduced into the medium pipe 421, and as the cooling medium circulates, the cooling medium can take away the heat on the medium pipe 421, and then take away the heat on the heat conducting plate 410, thereby achieving a heat dissipation purpose. In other embodiments, the heat sink 420 can also use cooling fins.
[0041] In one embodiment, reference Figure 3The side of the medium pipe 421 facing the heat conducting plate 410 is open. The opening allows the cold medium to better contact the heat conducting plate 410 and take away the heat from the heat conducting plate 410, thereby further achieving a heat dissipation effect.
[0042] In one embodiment, reference Figure 3 The medium pipe 421 is integrally formed with the heat conducting plate 410 or welded to the heat conducting plate 410. In this embodiment, it is to facilitate the connection between the medium pipe 421 and the heat conducting plate 410, and to ensure that the cold medium circulates in the medium pipe 421. At the same time, it can also avoid leakage during the circulation process, making the application more stable during use and avoiding water damage to the circuit.
[0043] In one embodiment, the longitudinal cross-section of the medium pipe 421 is configured as a rectangular structure, so as to increase the contact area between the cooling medium and the heat conducting plate 410 and further improve the heat dissipation effect.
[0044] In one embodiment, reference Figure 3 , the number of the medium pipes 421 is multiple, and the heat conduction component 400 further includes a header 422, which is used to connect with the multiple medium pipes 421. The header 422 can supply the cold medium to the multiple medium pipes 421, so as to facilitate the circulation of the cold medium. In this embodiment, the number of the header 422 is one, or two, which is not limited here.
[0045] In one embodiment, reference Figure 3 The collecting pipe 422 is fixed to the heat conducting plate 410, and one end of the collecting pipe 422 facing the heat conducting plate 410 is open, so as to increase the contact area between the cold medium in the collecting pipe 422 and the heat conducting plate 410, so as to facilitate the removal of heat.
[0046] In one embodiment, reference Figure 1 The housing 100 is provided with a plurality of ventilation holes 110 and cold medium through holes 120. The housing 100 is connected to the operation panel by screw locking. In this embodiment, the plurality of ventilation holes 110 can further dissipate heat for the controller. The cold medium can enter the housing 100 through the cold medium through holes 120 and then be connected to the medium pipe 421. In this embodiment, the cold medium is connected to the housing 100 through a pipeline.
[0047] In one embodiment, the active power factor correction module includes a detection and control unit, a converter, a capacitor, and a switching element, wherein the detection and control unit is used to detect input current and voltage and calculate the power factor, the converter is used to convert non-ideal AC input current into DC, and the switching element is used to achieve precise control of the current waveform.
[0048] In one embodiment, the switch element is configured as an IGBT (insulated gate bipolar transistor), wherein the IGBT only needs a small gate current to control a large collector current when in use, reducing the driving power requirement. At the same time, compared with traditional bipolar transistors, the IGBT has a faster switching speed, is suitable for high-frequency applications, and is convenient for the controller to adjust and use when the temperature changes frequently; at the same time, in the on state, the voltage drop of the IGBT is low, which improves the overall circuit efficiency. At the same time, the gate oxide layer insulation provides good electrical isolation, so that the IGBT can work at high voltage without damaging the control circuit.
[0049] In one embodiment, the hot and cold controller with active power factor correction also includes a power supply, and the power supply is installed on the heat conductive plate 410. In this embodiment, as the controller is used for a long time, its power supply, as a part of the heat source, will continuously generate heat. The power supply is installed on the heat conductive plate 410, and the heat conductive plate 410 can dissipate heat for the power supply, thereby further reducing the temperature inside the controller, thereby preventing the controller from being damaged by the influence of temperature, resulting in its inability to control the temperature.
[0050] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A heating and cooling controller with active power factor correction, characterized in that: include: case; An operation panel, mounted on the housing; A circuit board is installed in the housing, electrically connected to the operation panel, and is provided with an active power factor correction module; as well as The heat conduction component comprises a heat conduction plate and a heat sink. The heat conduction plate is mounted on the housing for mounting the circuit board. The heat sink is mounted on a side of the heat conduction plate away from the circuit board for circulation of a cooling medium.
2. The hot and cold controller with active power factor correction as claimed in claim 1, characterized in that: The heat sink comprises a medium-passing pipe, and the medium-passing pipe is fixedly arranged on the heat-conducting plate.
3. The hot and cold controller with active power factor correction as claimed in claim 2, characterized in that: The side of the medium-passing pipe facing the heat-conducting plate is open.
4. The hot and cold controller with active power factor correction as claimed in claim 3, characterized in that: The medium-passing pipe is integrally formed with the heat-conducting plate, or is welded to the heat-conducting plate.
5. The hot and cold controller with active power factor correction as claimed in claim 2, characterized in that: The longitudinal cross section of the medium-passing pipe is configured as a rectangular structure.
6. The heating and cooling controller with active power factor correction according to any one of claims 2 to 5, characterized in that: There are multiple medium-passing pipes, and the heat-conducting component further includes a header, which is used to connect with the multiple medium-passing pipes.
7. The heating and cooling controller with active power factor correction as claimed in claim 6, characterized in that: The collector is fixed on the heat conducting plate, and one end of the collector facing the heat conducting plate is open.
8. The heating and cooling controller with active power factor correction according to any one of claims 1 to 5, characterized in that: The shell is provided with a plurality of ventilation holes and cold medium through holes, and the shell is connected to the operation panel by screw locking.
9. The heating and cooling controller with active power factor correction according to any one of claims 1 to 5, characterized in that: The active power factor correction module includes a detection and control unit, a converter, a capacitor, and a switching element, wherein the detection and control unit is used to detect input current and voltage and calculate the power factor, the converter is used to convert non-ideal AC input current into DC, and the switching element is used to achieve precise control of the current waveform.
10. The heating and cooling controller with active power factor correction according to any one of claims 1 to 5, characterized in that: The hot and cold controller with active power factor correction also includes a power supply, which is installed on the heat conducting plate.