Anti-overheating table top dryer

Abstract

This utility model discloses an overheat-proof tabletop dryer, which includes a heating chamber, a guide plate, a temperature control module, an air duct assembly, and a cooling device. The heating chamber is divided into a heating zone and a guide plate. The guide plate ensures uniform airflow distribution and avoids localized overheating. The main air duct delivers airflow to the area to be dried, and the auxiliary air duct cools the area through the cooling device to prevent heat accumulation. The temperature control module monitors and adjusts the temperature in real time. This application solves the problem of inaccurate detection caused by the close distance between the temperature sensor and the heating element in existing equipment by optimizing the airflow path and heat distribution, significantly improving drying efficiency and safety.

Description

Technical Field

[0001] This utility model relates to the technical field of dryers, and in particular to an overheat-proof tabletop dryer. Background Technology

[0002] Countertop dryers are common household or commercial appliances primarily used for quickly drying the surface moisture of tableware, kitchenware, and other items. They effectively improve drying efficiency through hot air circulation. To prevent safety hazards caused by excessively high temperatures during operation, some dryers are designed with overheat protection to ensure safe use and extend the equipment's lifespan.

[0003] Existing countertop dryers typically use built-in heating elements to heat the air and then deliver the hot air to the surface of the items to be dried via a fan. To prevent overheating, some models have a temperature sensor near the heating element to monitor temperature changes in real time and control the heating module's operation. However, this design has certain limitations: because the temperature sensor is relatively close to the heating element, it is susceptible to localized high temperatures, leading to inaccurate temperature detection. Furthermore, the arrangement of the heating elements can result in uneven heat distribution, affecting the overall drying effect. Utility Model Content

[0004] The purpose of this invention is to provide an overheat-proof tabletop dryer to overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An overheat-proof countertop dryer is proposed to alleviate the technical problems of inaccurate detection, uneven heat distribution, and low overall drying efficiency caused by the close proximity of temperature sensors and heating elements in existing countertop dryers.

[0007] The overheat-proof tabletop dryer provided by this utility model includes a heating chamber, a guide plate, a temperature control module, an air duct assembly, and a cooling device;

[0008] The heating cavity has an air outlet at the top and an air inlet at the bottom; the guide plate is installed on the inner wall of the heating cavity and divides the heating cavity into a heating zone and a guide zone; the heating zone is located on the side of the guide plate closer to the air inlet, and the guide zone is located on the side of the guide plate closer to the air outlet;

[0009] The air duct assembly includes a main air duct and an auxiliary air duct; one end of the main air duct is connected to the air outlet, and the other end extends to the area of ​​the items to be dried; one end of the auxiliary air duct is connected to the flow guide area of ​​the heating cavity, and the other end is connected to the cooling device.

[0010] The temperature control module includes a temperature detection unit and an adjustment unit; the temperature detection unit is located in the flow guide area and is used to detect the temperature of the airflow after passing through the flow guide plate; the adjustment unit is connected to the temperature detection unit and adjusts the temperature by controlling the working state of the heating element in the heating cavity.

[0011] The cooling device includes a cooling fan and a heat sink; the cooling fan is installed in the auxiliary air duct and is used to introduce part of the airflow in the guide zone into the heat sink for cooling and then discharge.

[0012] Furthermore, the guide plate is provided with a plurality of guide holes; the diameter of the guide holes gradually decreases from the side closer to the air inlet to the side closer to the air outlet, so as to make the airflow form a uniform velocity distribution in the heating cavity.

[0013] Furthermore, a heat insulation layer is provided on the inner wall of the heating cavity; the heat insulation layer is made of high temperature resistant material and covers the outer surface of the heating cavity to reduce heat loss to the outside.

[0014] Furthermore, the temperature control module also includes an alarm unit; the alarm unit is connected to the temperature detection unit, and when the temperature detected by the temperature detection unit exceeds a preset value, the alarm unit issues an alarm signal.

[0015] Furthermore, a filter screen is provided at the connection between the main air duct and the heating cavity; the edge of the filter screen is fixed to the inner wall of the main air duct by a snap fastener to prevent foreign objects from entering the heating cavity.

[0016] Furthermore, an adjustable baffle is provided at the outlet end of the auxiliary air duct; the adjustable baffle is connected to the inner wall of the auxiliary air duct via a rotating shaft, and is used to adjust the exhaust volume of the auxiliary air duct.

[0017] Furthermore, the blades of the cooling fan are designed with an arc shape; the radius of curvature of the arc-shaped blades gradually increases from the center to the edge, which is used to improve the airflow delivery efficiency.

[0018] Furthermore, there are multiple heat sinks, which are evenly distributed along the length of the auxiliary air duct; the surface of the heat sink is coated with a thermally conductive coating to enhance the heat dissipation effect.

[0019] Furthermore, the bottom of the heating cavity is provided with support feet; the height of the support feet is adjustable, which is used to adjust the horizontal position of the heating cavity according to actual usage needs.

[0020] Furthermore, an observation window is provided on the side wall of the heating cavity; the observation window is made of transparent heat-resistant material and is used to observe the working status inside the heating cavity in real time.

[0021] This utility model provides an overheat-resistant countertop dryer, comprising a heating chamber, a guide plate, a temperature control module, an air duct assembly, and a cooling device. The heating chamber has an air outlet at the top and an air inlet at the bottom. The guide plate is installed on the inner wall of the heating chamber, dividing it into a heating zone and a guiding zone. The heating zone is located on the side of the guide plate near the air inlet, and the guiding zone is located on the side of the guide plate near the air outlet. The air duct assembly includes a main air duct and an auxiliary air duct. One end of the main air duct is connected to the air outlet, and the other end extends to the area of ​​the items to be dried. One end of the auxiliary air duct is connected to the guide zone of the heating cavity, and the other end is connected to the cooling device. The temperature control module includes a temperature detection unit and an adjustment unit. The temperature detection unit is located in the guide zone and is used to detect the airflow temperature after passing through the guide plate. The adjustment unit is connected to the temperature detection unit and adjusts the temperature by controlling the working state of the heating element in the heating cavity. The cooling device includes a cooling fan and a heat sink. The cooling fan is located in the auxiliary air duct and is used to introduce part of the airflow in the guide zone into the heat sink for cooling before exhausting it. In use, air enters the heating cavity from the air inlet, is heated by the heating element in the heating zone, and then enters the guide zone through the guide holes on the guide plate. The design of the guide plate makes the airflow velocity distribution more uniform, thereby avoiding local overheating. Part of the airflow passing through the guide zone is transported to the area of ​​the items to be dried through the main air duct, and the other part enters the cooling device through the auxiliary air duct for cooling to prevent heat accumulation. The temperature detection unit in the temperature control module monitors the airflow temperature in the guide zone in real time and controls the working state of the heating element through the adjustment unit to ensure that the temperature is always within a reasonable range.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] This invention effectively solves the problem of inaccurate detection caused by the close proximity of the temperature sensor and heating element in existing tabletop dryers by setting up a guide plate and a cooling device. At the same time, by optimizing the airflow path and heat distribution, it significantly improves drying efficiency and equipment safety. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the anti-overheating tabletop dryer of this utility model.

[0025] Figure 2 This is a cross-sectional view of the internal structure of the heating cavity in this utility model.

[0026] Figure 3 This is a schematic diagram of the connection structure between the air duct assembly and the cooling device in this utility model.

[0027] Figure 4 This is a block diagram illustrating the working principle of the temperature control module in this utility model.

[0028] Figure 5 This is a detailed view of the arrangement of the heat sink and the surface coating in this utility model.

[0029] The attached figures are labeled as follows:

[0030] 1. Heating chamber; 2. Guide plate; 3. Main air duct; 4. Auxiliary air duct; 5. Cooling fan; 6. Heat sink; 7. Temperature detection unit; 8. Adjustment unit; 9. Filter screen; 10. Adjustable baffle. Detailed Implementation

[0031] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings:

[0032] An overheat-proof tabletop dryer is described in detail below with reference to the accompanying drawings. Figure 1 This is a schematic diagram of the overall structure of the present invention, showing the layout relationship of the heating cavity 1, the air duct assembly and the cooling device; Figure 2 This is a cross-sectional view of the internal structure of the heating chamber 1, highlighting the design details of the guide plate 2 dividing the heating chamber 1 into a heating zone and a guide zone; Figure 3 This is a schematic diagram of the connection structure between the air duct assembly and the cooling device, showing the distribution and airflow path of the main air duct 3 and the auxiliary air duct 4; Figure 4 The diagram shows the working principle of the temperature control module, illustrating the connection between the temperature detection unit 7 and the adjustment unit 8 and their functional implementation. Figure 5 The diagram shows the arrangement and surface coating of the heat sink 6, highlighting the design feature of the heat sink being evenly distributed along the auxiliary air duct 4.

[0033] like Figures 1 to 5 As shown, this utility model of an anti-overheating tabletop dryer includes a heating chamber 1, a guide plate 2, a temperature control module, an air duct assembly, and a cooling device. The heating chamber 1 is the core component of the entire device, with an air outlet at the top and an air inlet at the bottom. A guide plate 2 is installed on the inner wall of the heating chamber 1, dividing it into two areas: a heating zone near the air inlet and a guiding zone near the air outlet. The guide plate 2 is designed to optimize the airflow path, ensuring even distribution and sufficient heating of the air entering the heating chamber 1. Multiple guiding holes are provided on the guide plate 2, with the diameter gradually decreasing from near the air inlet to near the air outlet. This design allows the airflow to gradually accelerate within the heating zone and form a uniform velocity distribution within the guiding zone, thus preventing localized overheating. The guide plate 2 is bolted to the inner wall of the heating chamber 1, ensuring its stable position and preventing displacement.

[0034] The outer surface of the heating chamber 1 is covered with a heat insulation layer made of high-temperature resistant material to reduce heat loss. The insulation layer is fixed to the outer surface of the heating chamber 1 with adhesive, covering the side walls and bottom. The presence of the insulation layer not only improves heating efficiency but also prevents excessive heat from affecting the external environment, enhancing equipment safety and user comfort. The bottom of the heating chamber 1 is equipped with support feet, the height of which can be adjusted via knobs to adjust the horizontal position of the heating chamber 1 according to actual usage needs. There are four support feet, located at the four corners of the bottom of the heating chamber 1, and fixed to the bottom of the heating chamber 1 by threaded connections.

[0035] The air duct assembly includes a main air duct 3 and an auxiliary air duct 4. One end of the main air duct 3 is connected to the air outlet of the heating chamber 1, and the other end extends to the area where the items to be dried are placed. A filter screen 9 is installed at the connection point of the main air duct 3, and the edge of the filter screen 9 is fixed to the inner wall of the main air duct 3 by clips. The function of the filter screen 9 is to prevent foreign objects from entering the heating chamber 1 and to prevent the heating element or the guide plate 2 from being blocked or damaged. One end of the auxiliary air duct 4 is connected to the guide area of ​​the heating chamber 1, and the other end is connected to the cooling device. An adjustable baffle 10 is installed at the outlet end of the auxiliary air duct 4, and the adjustable baffle 10 is connected to the inner wall of the auxiliary air duct 4 via a rotating shaft. The adjustable baffle 10 can be adjusted manually or automatically to control the exhaust volume of the auxiliary air duct 4. This design allows users to flexibly adjust the airflow distribution ratio according to actual needs, further optimizing equipment performance.

[0036] The cooling device includes a cooling fan 5 and heat sinks 6. The cooling fan 5 is located within the auxiliary air duct 4 and is used to guide a portion of the airflow within the guide zone into the heat sink 6 for cooling before exhausting. The blades of the cooling fan 5 feature an arc-shaped design, with the radius of curvature gradually increasing from the center to the edge. This design significantly improves airflow efficiency while reducing operating noise. Multiple heat sinks 6 are evenly distributed along the length of the auxiliary air duct 4. The surface of the heat sinks 6 is coated with a thermally conductive coating to enhance heat dissipation. The thermally conductive coating is chosen based on its high thermal conductivity and good corrosion resistance, ensuring stable heat dissipation capacity during prolonged use. The heat sinks 6 are fixed to the inner wall of the auxiliary air duct 4 by welding, ensuring their stable position and preventing them from easily falling off.

[0037] The temperature control module includes a temperature detection unit 7, an adjustment unit 8, and an alarm unit. The temperature detection unit 7 is located within the airflow guide zone and is used to detect the airflow temperature after passing through the guide plate 2. The temperature detection unit 7 is fixed to the inner wall of the airflow guide zone by a bracket, and its temperature probe is directly exposed to the airflow to ensure the accuracy of the detection results. The adjustment unit 8 is connected to the temperature detection unit 7 via wires. The adjustment unit 8 controls the operating state of the heating element in the heating chamber 1 based on the data provided by the temperature detection unit 7, thereby adjusting the temperature. The adjustment unit 8 has a built-in microprocessor that can analyze temperature change trends in real time and make corresponding adjustments. When the temperature detected by the temperature detection unit 7 exceeds a preset value, the alarm unit issues an alarm signal. The alarm unit alerts the user to abnormal conditions through a buzzer and indicator lights, which are respectively installed in conspicuous positions on the device casing.

[0038] An observation window made of transparent, heat-resistant material is provided on the side wall of the heating chamber 1 for real-time observation of the internal working status of the heating chamber 1. The observation window is fixed to the side wall of the heating chamber 1 by a sealing ring to ensure good sealing performance between the window and the heating chamber 1. The design of the observation window allows users to understand the operating status of the equipment at any time and promptly identify potential problems.

[0039] The working process of this anti-overheating tabletop dryer is as follows: Air enters the heating chamber 1 through the air inlet, is heated by the heating element in the heating zone, and then enters the guide zone through the guide holes on the guide plate 2. The design of the guide plate 2 makes the airflow velocity distribution more uniform, thereby avoiding local overheating. Part of the airflow passing through the guide zone is transported to the area of ​​items to be dried through the main air duct 3, and the other part enters the cooling device through the auxiliary air duct 4 for cooling treatment to prevent heat accumulation. The temperature detection unit 7 in the temperature control module monitors the airflow temperature in the guide zone in real time, and controls the working state of the heating element through the adjustment unit 8 to ensure that the temperature is always within a reasonable range. When the temperature detected by the temperature detection unit 7 exceeds the preset value, the alarm unit issues an alarm signal to remind the user to take appropriate measures. The cooling fan 5 introduces part of the airflow in the guide zone into the heat sink 6 for cooling treatment before exhausting it, effectively reducing the overall temperature of the equipment and improving operational safety.

[0040] The specific embodiments of this utility model have been described above. The detailed description of each component and the connection relationship and cooperation method between them have been fully explained to ensure that those skilled in the art can successfully implement this technical solution according to the contents of the specification.

[0041] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An anti-overheating benchtop dryer characterised in that, It includes a heating chamber (1), a guide plate (2), a temperature control module, an air duct assembly, and a cooling device; the heating chamber (1) has an air outlet at the top and an air inlet at the bottom; the guide plate (2) is installed on the inner wall of the heating chamber (1) and divides the heating chamber (1) into a heating zone and a guide zone; the heating zone is located on the side of the guide plate (2) near the air inlet, and the guide zone is located on the side of the guide plate (2) near the air outlet; The air duct assembly includes a main air duct (3) and an auxiliary air duct (4); one end of the main air duct (3) is connected to the air outlet, and the other end extends to the area of ​​the items to be dried; one end of the auxiliary air duct (4) is connected to the guide area of ​​the heating cavity (1), and the other end is connected to the cooling device. The temperature control module includes a temperature detection unit (7) and an adjustment unit (8); the temperature detection unit (7) is located in the flow guide area and is used to detect the airflow temperature after passing through the flow guide plate (2); the adjustment unit (8) is connected to the temperature detection unit (7) and adjusts the temperature by controlling the working state of the heating element in the heating cavity (1); The cooling device includes a cooling fan (5) and a heat sink (6); the cooling fan (5) is located in the auxiliary air duct (4) and is used to introduce part of the airflow in the guide zone into the heat sink (6) for cooling treatment and then discharge.

2. The anti-scuffing table dryer of claim 1, wherein The guide plate (2) is provided with a plurality of guide holes; the diameter of the guide holes gradually decreases from the side closer to the air inlet to the side closer to the air outlet.

3. The anti-scuffing table dryer of claim 1, wherein, A heat insulation layer is provided on the inner wall of the heating cavity (1); the heat insulation layer is made of high temperature resistant material and covers the outer surface of the heating cavity (1).

4. The anti-scuffing table dryer of claim 1, wherein, The temperature control module also includes an alarm unit; the alarm unit is connected to the temperature detection unit (7), and when the temperature detected by the temperature detection unit (7) exceeds the preset value, the alarm unit issues an alarm signal.

5. The anti-scuffing table dryer of claim 1 wherein, A filter screen (9) is provided at the connection between the main air duct (3) and the heating cavity (1); the edge of the filter screen (9) is fixed to the inner wall of the main air duct (3) by a snap fastener.

6. The anti-scuffing table dryer of claim 1, wherein, An adjustable baffle (10) is provided at the outlet end of the auxiliary air duct (4); the adjustable baffle (10) is connected to the inner wall of the auxiliary air duct (4) via a rotating shaft.

7. The anti-scuffing table dryer of claim 1 wherein, The blades of the cooling fan (5) are designed in an arc shape; the radius of curvature of the blades in the arc shape gradually increases from the center to the edge.

8. The anti-scuffing table dryer of claim 1, wherein, The number of heat sinks (6) is multiple and they are evenly distributed along the length of the auxiliary air duct (4); the surface of the heat sinks (6) is coated with a thermally conductive coating.

9. The anti-scuffing table dryer of claim 1 wherein, An observation window is provided on the side wall of the heating cavity (1); the observation window is made of transparent heat-resistant material.

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