Over-temperature protection system for food purification machine

Abstract

The present application discloses an over-temperature protection system for a food purifier, and relates to a food purifier. It provides over-temperature protection for the power supply and the purification chamber, and the over-temperature protection system includes: a control module, a temperature sensor and a thermostat. The control module includes a controller and a control circuit. The controller generates a control signal according to the received external signal, controls the conduction or disconnection of multiple purification electrodes of the control circuit, and the switch of the control circuit is installed on the heat sink. The temperature sensor collects the temperature at the power supply and the heat sink, and feeds it back to the controller. The thermostat is installed on the heat sink and connected to the live wire of the power supply and is in a mechanical switch normally closed state. According to different heating conditions, the controller configures the temperature into three levels of over-temperature protection by obtaining the temperature. Through the above structure, the present application fully protects the components in the food purifier from affecting the service life due to overheating, and fully protects the food purifier from failure due to over-temperature operation.

Description

Technical Field

[0001] The present application relates to the field of electrical products, and in particular to an over-temperature protection system for a food purifier. Background Art

[0002] At present, in the field of electrical products, all electrical products consume power and generate heat. Some electrical products have high internal energy consumption and generate serious heat. In addition, due to different regions and seasons, the working environment temperature of electrical products is different, which will cause the working temperature of the electrical product's own components to be very high. When the heat dissipation system of the electrical product cannot provide enough heat for the electrical product or the heat dissipation system fails, the electrical product will continue to work at high temperature, which may cause damage to the service life, or even burn out the components and cause electrical product failure.

[0003] Let's take a food purifier as an example. A food purifier is a device that processes pesticide residues in food. In a food purifier that uses electrolyzed water technology, the main unit energizes the purification chamber with purification electrodes to produce a series of electrochemical reactions, thereby removing pesticide residues and bacteria and viruses to restore the original taste of the food. The working temperature of the purification chamber is different in different use environments. For example, in areas with high salinity in water, especially in summer, the working temperature of the purification chamber will be very high. If it continues to work at high temperature, it will damage the service life of the food purifier and even burn out the components, causing the food purifier to malfunction.

[0004] Therefore, it is urgent to develop a system that can protect the food purifier from overheating. Summary of the invention

[0005] The purpose of this application is to overcome the above problems or at least partially solve or alleviate the above problems.

[0006] The present application provides an over-temperature protection system for a food purifier, which is used to provide over-temperature protection for a power supply and a purification chamber. The power supply is used to power a control module and the purification chamber. The purification chamber has a plurality of purification electrodes, which are used to be placed in water containing food and purify the food when powered on. The over-temperature protection system includes:

[0007] A control module, comprising a controller and a control circuit, wherein the controller is electrically connected to the power supply and the control circuit, and is used to generate a control signal according to a received external signal, and control the control circuit to turn on or off the plurality of purification electrodes, wherein the control circuit has a switch, and the switch is mounted on a heat sink;

[0008] a temperature sensor, which is correspondingly arranged at the power supply and the heat sink, and is used to collect the temperature at the power supply and the heat sink, and feed back the corresponding temperature to the controller; and

[0009] A thermostat, mounted on the heat sink and connected to the live wire of the power supply, the thermostat being a mechanical switch normally closed;

[0010] According to different heating conditions, the controller is configured to have three levels of over-temperature protection by obtaining the temperature of the temperature sensor.

[0011] Optionally, in the over-temperature protection system, the temperature of the power supply is set to a first preset temperature, the temperature of the heat sink is set to a second preset temperature, the temperature of the thermostat is set to a third preset temperature, and the thermostat is configured to be disconnected when the temperature reaches the third preset temperature and closed when the temperature is lower than the third preset temperature.

[0012] The control module is configured as a first-level over-temperature protection. When the temperature sensor at the heat sink detects that the temperature there has reached the second preset temperature, the control circuit is controlled to be disconnected, the purification chamber stops working, and an alarm is triggered to prompt the user.

[0013] Optionally, in the over-temperature protection system, when the first-level over-temperature protection fails or is abnormal, the control module is also configured as a second-level over-temperature protection. When the temperature sensor at the power supply detects that the temperature there reaches the first preset temperature, the control circuit is controlled to disconnect, so that the purification chamber stops working, and an alarm is sounded to prompt the user.

[0014] Optionally, in the over-temperature protection system, when the first-level over-temperature protection and the second-level over-temperature protection are all invalid or abnormal, and when the heat sink temperature reaches the third preset temperature, the thermostat is disconnected, so that the food purifier is directly powered off.

[0015] Optionally, in the over-temperature protection system, the first preset temperature is 70°C, the second preset temperature is 70°C, and the third preset temperature is 90°C.

[0016] Optionally, in the over-temperature protection system, the switch is a MOS tube, a relay or a triode.

[0017] The over-temperature protection system for a food purifier of the present application collects the temperatures at the power supply and the heat sink through corresponding temperature sensors, and configures the controller into three-level over-temperature protection by obtaining the temperature of the temperature sensor according to different heating conditions, thereby fully protecting the components in the food purifier from being affected in service life due to overheating, and fully protecting the food purifier from malfunctioning due to over-temperature operation.

[0018] Furthermore, the over-temperature protection system of the present application controls the purification chamber to stop working and reminds the user that the food purifier needs to suspend heat dissipation for a long time through the first-level over-temperature protection. When the first-level over-temperature protection fails or is abnormal, the second-level over-temperature protection is used to control the purification chamber to stop working and inform the user that the equipment is overheated and the first-level over-temperature protection is abnormal, and to contact after-sales personnel. When both the first and second-level over-temperature protections fail or are abnormal, the purification chamber will be directly powered off. Through the above-mentioned three-level over-temperature protection, the heating condition of the food purifier can be accurately reflected, the overheating condition of the food purifier can be clearly fed back to the user, and the food purifier can be fully protected.

[0019] Based on the detailed description of the specific embodiments of the present application in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Hereinafter, some specific embodiments of the present application will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0021] Figure 1 It is a schematic structural diagram of an over-temperature protection system for a food purifier according to an embodiment of the present application.

[0022] The symbols in the figure mean the following:

[0023] 100 food purifier,

[0024] 10 Power supply,

[0025] 20 purification chambers,

[0026] 30 control module, 31 controller, 32 control circuit,

[0027] 40 heat sinks,

[0028] 50 temperature sensors,

[0029] 60 Thermostat. DETAILED DESCRIPTION

[0030] Figure 1It is a schematic structural diagram of an over-temperature protection system for a food purifier according to an embodiment of the present application. In this embodiment, an over-temperature protection system for a food purifier 100 is provided, which is used to provide over-temperature protection for a power supply 10 and a purification chamber 20. The power supply 10 is used to power a control module 30 and the purification chamber 20. The purification chamber 20 has a plurality of purification electrodes, which are placed in water containing food and purify the food when powered on. The over-temperature protection system includes: a control module 30, a temperature sensor 50 and a thermostat 60. The power supply 10 is used to power a control module 30 and the purification chamber 20. The purification chamber 20 has a plurality of purification electrodes, which are placed in water containing food and purify the food when powered on. The control module 30 includes a controller 31 and a control circuit 32. The controller 31 is electrically connected to the power supply 10 and the control circuit 32, and is used to generate a control signal according to a received external signal, and control the control circuit 32 to conduct or disconnect the plurality of purification electrodes. The control circuit 32 has a switch, which is mounted on a heat sink 40. The temperature sensor 50 is correspondingly arranged at the power supply 10 and the heat sink, and is used to collect the temperature of the power supply 10 and the heat sink, and feed back the corresponding temperature to the controller 31. The thermostat 60 is installed on the heat sink and connected to the live wire of the power supply 10. The thermostat 60 is a mechanical switch normally closed state. According to the heating characteristics of the food purifier 100, according to different heating conditions, by obtaining the temperature of the temperature sensor 50, the controller 31 is configured as a three-level over-temperature protection.

[0031] The over-temperature protection system for the food purifier 100 of the present application deploys two or more temperature sensors 50 to detect the temperature according to the heating situation. The temperature sensors 50 cooperate with each other to achieve three-level over-heat protection or multi-level protection according to the speed of temperature rise in the heating part, so as to fully protect the components in the food purifier 100 from being affected by overheating and affecting the service life, and fully protect the food purifier 100 from malfunctioning due to over-temperature operation.

[0032] The over-temperature protection system of the present application can also be applied to other electronic products. Temperature sensors can be arranged according to the different heating parts of the electronic products, the power supply and the preset temperature of the heating parts can be set, and three-level over-temperature protection or multi-level protection can be implemented according to the speed of temperature rise of the heating parts.

[0033] Further, in the over-temperature protection system of the present embodiment, the temperature of the power supply 10 is set to a first preset temperature, the temperature of the heat sink 40 is set to a second preset temperature, the temperature of the thermostat 60 is set to a third preset temperature, and the thermostat 60 is configured to be disconnected when the temperature reaches the third preset temperature and closed when the temperature is lower than the third preset temperature.

[0034] The control module 30 is configured as a first-level over-temperature protection. When the temperature sensor 50 at the heat sink 40 detects that the temperature there has reached the second preset temperature, the control circuit 32 is controlled to be disconnected, so that the purification chamber 20 stops working, and an alarm is sounded to remind the user that the food purifier 100 needs to suspend heat dissipation for a long time.

[0035] Furthermore, in the present embodiment, the over-temperature protection system, when the first-level over-temperature protection fails or is abnormal, the control module 30 is also configured as the second-level over-temperature protection. When the temperature sensor 50 at the power supply 10 detects that the temperature there has reached the first preset temperature, the control circuit 32 is controlled to be disconnected, so that the purification chamber 20 stops working, and an alarm is sounded to prompt the user, informing the user that the equipment is overheated and the first-level over-temperature protection is abnormal, and to contact after-sales personnel.

[0036] Furthermore, in this embodiment, when the first-level over-temperature protection and the second-level over-temperature protection of the over-temperature protection system are both invalid or abnormal, when the temperature of the heat sink 40 reaches the third preset temperature, the thermostat 60 is disconnected, so that the food purifier 100 is directly powered off.

[0037] The over-temperature protection system of the present application controls the purification chamber 20 to stop working and reminds the user that the food purifier 100 needs to suspend heat dissipation for a long time through the first-level over-temperature protection. When the first-level over-temperature protection fails or is abnormal, the second-level over-temperature protection is used to control the purification chamber 20 to stop working and inform the user that the equipment is overheated and the first-level over-temperature protection is abnormal, and to contact after-sales personnel. When both the first and second-level over-temperature protections fail or are abnormal, the food purifier 100 will be directly powered off. Through the above-mentioned three-level over-temperature protection, the heating condition of the food purifier 100 can be accurately reflected, the overheating condition of the food purifier 100 can be clearly fed back to the user, and the food purifier 100 can be fully protected.

[0038] More specifically, in the over-temperature protection system, the switch is a MOS tube, a relay or a triode. In this embodiment, the switch is a MOS tube.

[0039] In specific implementation, the over-temperature protection system includes:

[0040] Power supply 10: The input is 220V municipal electricity. There are two output points, one is the working output, which provides a large current for the purification chamber 20 to work; the other is the control circuit 32 output, which supplies power to the control part.

[0041] Control part: It is divided into two parts. One part is the controller 31, i.e. the MCU main control part (its main function is signal collection, analysis and output); the other part is the control circuit 32, i.e. the high current output control part, which is controlled by the MCU and receives the signal from the MCU to proceed to the next step. The MOS tube, which plays a major role in the control circuit 32, generates a lot of heat during operation and can be installed on the heat sink 40 to increase heat dissipation.

[0042] Temperature sensor 50: There are two temperature sensors 50 in the over-temperature protection system of the present application: one is located on the MOS tube heat sink 40 to detect the temperature rise of the heat sink 40; the other is located on the power supply to detect the temperature rise of the power supply. The information collected by the two temperature sensors 50 is transmitted to the MCU for analysis and judgment.

[0043] Working principle:

[0044] After multiple temperature rise tests and data analysis, it was found that the heat sink 40 was the component with the fastest temperature rise in the over-temperature protection system, followed by the power supply 10. There was a 10°C temperature difference between the temperature of the heat sink 40 and the temperature of the power supply 10. Under the same conditions, the temperature of the heat sink 40 was 10°C higher than that of the power supply 10.

[0045] The working temperature of the MOS tube should not exceed 90 degrees Celsius, and the working temperature of the power supply 10 should not exceed 80 degrees Celsius, so the thermostat 60NTC connected to 220V sets the third preset temperature to 90 degrees Celsius; the power supply 10 itself has a 75 degrees Celsius circuit breaker protection. When the temperature of the power supply 10 reaches the first preset temperature of 70 degrees Celsius, an alarm is set to remind the user; in order to improve the safety factor and service life of the equipment, a step of over-temperature detection protection is added to the heat sink 40, that is, when the temperature of the heat sink 40 reaches the second preset temperature of 70 degrees Celsius, an alarm will be set to remind the user.

[0046] Over-temperature protection system operation process: After the purification chamber 20 has been working for a long time, the first level over-temperature protection, if the temperature of the temperature sensor 50 on the heat sink 40 reaches 70°C, the MCU will control the purification chamber 20 to stop working and remind the user that the device needs to suspend heat dissipation due to long-term operation. If the first level over-temperature protection fails or is abnormal in this step, the second level over-temperature protection, when the temperature of the power supply 10 reaches 70°C, that is, the temperature of the heat sink 40 reaches 80°C, the temperature sensor 50 on the power supply 10 will transmit a signal to the MCU, the MCU controls the purification chamber 20 to stop running and informs the user that the device is overheated and the first level over-temperature protection is abnormal, and contact after-sales personnel. If the first level over-temperature protection and the second level over-temperature protection are all invalid or abnormal, when the heat sink 40 reaches 90°C, the food purifier 100 will directly cut off the power.

[0047] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which this application belongs.

[0048] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0049] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0050] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0052] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An over-temperature protection system for a food purifier, characterized in that: The over-temperature protection system is used to provide over-temperature protection for the power supply (10) and the purification chamber (20). The power supply (10) is used to supply power to the control module (30) and the purification chamber (20). The purification chamber (20) has a plurality of purification electrodes, which are used to be placed in water containing food and purify the food when powered on. The over-temperature protection system comprises: A control module (30) comprises a controller (31) and a control circuit (32), wherein the controller (31) is electrically connected to the power supply (10) and the control circuit (32), and is used to generate a control signal according to a received external signal, and control the control circuit (32) to switch on or off the plurality of purification electrodes, wherein the control circuit (32) has a switch, and the switch is mounted on the heat sink (40); a temperature sensor (50), which is correspondingly arranged at the power supply (10) and the heat sink (40), and is used to collect the temperature at the power supply (10) and the heat sink (40), and feed back the corresponding temperature to the controller (31); and a thermostat (60), which is installed on the heat sink (40) and connected to the live wire of the power supply (10), and the thermostat (60) is a mechanical switch normally closed state; Wherein, according to different heating conditions, the controller (31) is configured as a three-level over-temperature protection by obtaining the temperature of the temperature sensor (50); The temperature of the power supply (10) is set to a first preset temperature, the temperature of the heat sink (40) is set to a second preset temperature, the temperature of the thermostat (60) is set to a third preset temperature, and the thermostat (60) is configured to be disconnected when the temperature reaches the third preset temperature and closed when the temperature is lower than the third preset temperature. The control module (30) is configured as a first-level over-temperature protection, and when the temperature sensor (50) at the heat sink (40) detects that the temperature therein reaches the second preset temperature, the control circuit (32) is controlled to be disconnected, so that the purification chamber (20) stops working, and an alarm is sounded to prompt the user; When the first level over-temperature protection fails or is abnormal, the control module (30) is further configured as a second level over-temperature protection, and when the temperature sensor (50) at the power supply (10) detects that the temperature there has reached the first preset temperature, the control circuit (32) is controlled to be disconnected, so that the purification chamber (20) stops working, and an alarm is sounded to prompt the user; When both the first-level over-temperature protection and the second-level over-temperature protection are ineffective or abnormal, when the temperature of the heat sink reaches the third preset temperature, the temperature controller (60) is disconnected, so that the food purifier is directly powered off; The first preset temperature is 70°C, the second preset temperature is 70°C, and the third preset temperature is 90°C.

2. The over-temperature protection system according to claim 1, characterized in that: The switch is a MOS tube, a relay or a triode.

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