Refrigerator defrosting heating pipe additionally provided with temperature controller

Abstract

The utility model discloses a refrigerator defrosting heating pipe additionally provided with temperature controllers, which comprises a defrosting pipe and two groups of temperature controllers, and each temperature controller is provided with two leads which are respectively a black silica gel lead and a 125 DEG C temperature resistant electronic lead; extending leading-out rods are arranged at the two ends of the defrosting pipe, the two temperature controllers are connected to the leading-out rods at the two ends of the defrosting pipe in series respectively, black silica gel wires of the two temperature controllers are electrically connected with the leading-out rods respectively, and therefore safety can be improved, maintenance cost can be reduced, efficiency can be improved, the service life of equipment can be prolonged, the defrosting effect can be improved, and the failure rate can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of refrigerator manufacturing technology, and in particular to a refrigerator defrosting heating tube equipped with a thermostat. Background Technology

[0002] Currently, refrigerators on the market are divided into two types: direct-cooling refrigerators and frost-free refrigerators, with frost-free refrigerators becoming the mainstream. Frost-free refrigerators, also known as air-cooled frost-free refrigerators, have evaporators designed to achieve forced circulation of cold air. These refrigerators use a small fan to force air convection within the cabinet for cooling. The evaporator is usually placed in the space between the freezer and refrigerator compartments or at the rear of the cabinet, using forced convection to cool the air inside, so users will not see frost forming on the evaporator. A defrost heater is installed at the evaporator; the defrost heater heats up the frost on the evaporator, melting it into water that flows into a drip tray, thus avoiding the frost buildup problem of traditional frost-producing refrigerators.

[0003] To prevent thermal runaway of the defrosting tube, a thermal fuse is installed near it. If the temperature exceeds the fuse's activation temperature, the internal heat-sensitive pellet will melt, cutting off power to the defrosting tube. However, since the fuse is disposable and cannot be reset after activation, the defrosting tube must be replaced. Furthermore, the fuse surface is electrically charged, requiring extensive safety precautions. The fuse temperature is typically around 70 degrees Celsius; in summer, high outdoor temperatures can easily lead to overheating and melting during transportation, compromising product quality.

[0004] To solve this technical problem, this project uses a waterproof thermostat instead of a fuse, which can effectively avoid the problem of the thermostat not being able to recover after being heated. Utility Model Content

[0005] To address the technical problems existing in the background art, this utility model proposes a refrigerator defrosting heating tube equipped with a thermostat.

[0006] The present invention proposes a refrigerator defrosting heating tube with added thermostats, including a defrosting tube and two sets of thermostats. The thermostats have two wires, namely a black silicone wire and a 125°C temperature-resistant electronic wire.

[0007] Both ends of the defrosting tube have protruding leads. The two sets of thermostats are connected in series to the leads at both ends of the defrosting tube. The black silicone wires of the two sets of thermostats are electrically connected to the corresponding leads.

[0008] Preferably, the outer shell of the thermostat is made of plastic.

[0009] Preferably, the 5mm stripped ends of the black silicone wire and the 125°C heat-resistant electronic wire are tinned.

[0010] Preferably, the outer sides of the lead-out rods at both ends of the defrosting tube are provided with black cured silicone rubber, and the outer sides of both ends of the defrosting tube and the connection points between the lead-out rods and the black silicone wires are all wrapped with sealing heads.

[0011] Preferably, the wire and the junction box should withstand a tensile force of not less than 9.1 kg·f / min.

[0012] Preferably, all materials comply with RoHS requirements.

[0013] The refrigerator defrosting heating element with a thermostat proposed in this utility model has the following effects:

[0014] 1. Improved safety: The thermostat can more accurately control the working status of the heater, avoiding dangers such as fires caused by excessive temperature.

[0015] 2. Reduced maintenance costs: Traditional fuses may require replacing the entire heater if they fail, while thermostats can control the heater more flexibly, reducing maintenance costs caused by fuse failure.

[0016] 3. Improve efficiency: The thermostat can adjust the operation of the heater according to the actual temperature inside the refrigerator, which can defrost more effectively and improve the refrigerator's working efficiency.

[0017] 4. Extend equipment life: By precisely controlling the operation of the heater, equipment wear caused by temperature fluctuations can be reduced, thereby extending the life of the refrigerator.

[0018] 5. Improved defrosting effect: The thermostat can more precisely control the defrosting process, avoiding over-defrosting and under-defrosting, and improving defrosting efficiency.

[0019] 6. Reduce failure rate: Precise control of the temperature controller can reduce failures caused by improper temperature control.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] The following are the labels in the diagram: 1. Temperature controller; 101. Black silicone wire; 102. 125℃ temperature resistant electronic wire; 2. Defrosting tube; 201. Lead-out rod; 202. Sealing head; 203. Black cured silicone rubber. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] like Figure 1 The refrigerator defrosting heating tube shown includes a defrosting tube 2 and two sets of thermostats 1. Each thermostat 1 has two wires, namely a black silicone wire 101 and a 125°C resistant electronic wire 102.

[0025] Both ends of the defrosting tube 2 have protruding lead rods 201. The two sets of thermostats 1 are connected in series on the lead rods 201 at both ends of the defrosting tube 2. The black silicone wires 101 of the two sets of thermostats 1 are electrically connected to the corresponding lead rods 201.

[0026] Thermostat 1 is a device that can sense the ambient temperature and adjust the temperature of equipment or system according to the set temperature control point.

[0027] Thermostat 1 primarily detects ambient temperature using a temperature sensor. This temperature sensor can be a resistance temperature detector (RTD), a thermocouple, or a thermistor. These sensors change their resistance or potential difference with temperature variations. When the detected temperature signal is transmitted to the control circuit of thermostat 1, the control circuit compares it with a preset temperature value. If the detected temperature is higher than the set temperature (for refrigeration equipment) or lower than the set temperature (for heating equipment), thermostat 1 will send a control signal to start, stop, or adjust the power of the refrigeration or heating equipment to achieve temperature control.

[0028] Preferably, the 5mm stripped ends of the black silicone wire 101 and the 125°C heat-resistant electronic wire 102 are tinned.

[0029] Preferably, the outer sides of the lead-out rods 201 at both ends of the defrosting tube 2 are provided with black cured silicone rubber 203, and the outer sides of both ends of the defrosting tube 2 and the connection between the lead-out rods 201 and the black silicone wire 101 are all wrapped with sealing heads 202, which play a protective role at the connection of the wires.

[0030] Technical Requirements

[0031] Voltage: 127V, Power: 120W±5%. Resistance range: 128.0Ω~141.4Ω.

[0032] The pipes need to undergo a blackening heat treatment.

[0033] Immersion withstand voltage: After the product is immersed in 1% NaL water for 24 hours, the withstand voltage in the water is tested at AC1800V.1S: the leakage current is set at 2mA, and there is no flashover breakdown or equipment alarm.

[0034] Hot withstand voltage: Under 1.2 times the rated voltage, when energized to a stable temperature, AC1800V.1S: with a leakage current set to 2mA, no flashover breakdown or equipment alarm will occur.

[0035] Water immersion insulation resistance: After immersion in 1% NaL water for 24 hours, the insulation resistance is ≥1000MΩ, DC500V10S.

[0036] Hot insulation resistance: At 1.2 times the rated voltage, after being energized to a stable temperature state, the insulation resistance is ≥100MΩ, DC500V10S.

[0037] Hot leakage current: ≤0.1mA.

[0038] Durability test: 40 seconds of energization in water at 1.2 times the voltage, followed by 140 seconds of power interruption in the air as one cycle, repeated 10,000 times. Withstand voltage AC1800V.1S, insulation resistance ≥1000MΩ, DC500V.10S.

[0039] Wire tensile test: The wire and the junction box should withstand a tensile force of not less than 9.1 kg·f / min.

[0040] The limit deviations of dimensions without specified tolerances shall conform to GB / T1804-M grade.

[0041] All materials must comply with RoHS requirements.

[0042] The defrosting tube 2 originally had fuses installed, which are disposable and cannot be reset once activated. Thermostat 1, on the other hand, is resettable with a lifespan of 10,000 cycles. Fuses are electrically charged and require extensive safety precautions, while thermostat 1's surface is made of insulated plastic. Fuses typically operate at around 70 degrees Celsius; in summer, high outdoor temperatures can easily cause them to overheat and fuse during transport, compromising product quality. Thermostat 1 avoids these problems.

[0043] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A defrosting heating pipe of a refrigerator provided with a temperature controller, comprising a defrosting pipe (2), characterized in that, Two groups of temperature controllers (1) are also included, which have two wires, namely black silica gel wires (101) and temperature-resistant 125 DEG C electronic wires (102); Both ends of the defrosting pipe (2) have protruding lead-out rods (201), and two groups of the temperature controllers (1) are connected in series on the lead-out rods (201) at both ends of the defrosting pipe (2), and the black silica gel wires (101) of the two groups of the temperature controllers (1) are electrically connected with the corresponding lead-out rods (201).

2. The defrosting heating pipe of a refrigerator provided with a temperature controller according to claim 1, wherein The shell of the temperature controller (1) is made of plastic material.

3. The defrosting heating pipe of a refrigerator provided with a temperature controller according to claim 1, wherein The 5mm stripped heads of the black silica gel wires (101) and the temperature-resistant 125 DEG C electronic wires (102) are immersed in tin.

4. The defrosting heating pipe of a refrigerator provided with a temperature controller according to claim 1, wherein The outer sides of the lead-out rods (201) at both ends of the defrosting pipe (2) are provided with black cured silica rubber (203), and the connection portions between the two ends of the defrosting pipe (2), the lead-out rods (201) and the black silica gel wires (101) are wrapped with sealing heads (202).

5. The defrosting heater pipe of a refrigerator provided with a temperature controller according to claim 1, wherein The tension between the electric wire and the wiring card should be not less than 9.1kg.f / min.

6. The defrosting heater pipe of a refrigerator provided with a temperature controller according to claim 1, wherein All materials meet the requirements of ROHS.

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