Multifunctional PTC heater

Abstract

The utility model provides a kind of multifunctional PTC heater, it includes body and PTC heating core, two liquid passages are equipped in body middle position, each of the upper and lower sides of liquid passage is equipped with containing cavity, each containing cavity is provided with PTC heating core, and heat dissipation structure is arranged on the outer surface of containing cavity away from liquid passage, one end of body is equipped with tail plastic component, import and export are equipped on the outside of tail plastic component, sealing plug is arranged between tail plastic component and body;Two PTC heating cores are connected in parallel, and are connected with external power supply by electric connecting wire.Compared with prior art, the product uses new generation PTC heating technology, breaks through the limitation of single function of traditional heating equipment, and initiates to realize three-in-one integrated heating of warm air, hot water and high-temperature steam, in addition, the product uses stainless steel circulation design, and through the cooperative work of double-sided PTC heating source, the medium temperature is improved while the corrosion resistance is significantly improved.

Description

Technical Field

[0001] This invention relates to the field of heating equipment, and in particular to a multifunctional PTC heater. Background Technology

[0002] PTC (Positive Temperature Coefficient) heaters have become a core component of modern heating equipment due to their unique self-regulating temperature characteristics, fast thermal response, and inherent safety.

[0003] Traditional PTC heaters are mainly divided into two independent structures based on application scenarios: air-heated (such as in air conditioning) and liquid-heated (such as in liquid heaters). However, in complex applications, such as smart appliance cleaning systems, both high-temperature cleaning fluid or steam are needed to accelerate stain decomposition and sterilization, and hot air is required to quickly dry the appliance surface. Existing solutions require the parallel configuration of two independent heating systems, air-heated and liquid-heated, which increases equipment size, material costs, and energy efficiency redundancy issues. Utility Model Content

[0004] To address the above problems, this utility model provides a multifunctional PTC heater, the technical solution of which is as follows:

[0005] A multifunctional PTC heater includes a body with two liquid channels in the middle. Each liquid channel has a receiving cavity on its upper and lower sides. A PTC heating core is installed in each receiving cavity. A heat dissipation structure is installed on the outer surface of the receiving cavity away from the liquid channel.

[0006] One end of the main body is provided with a tail plastic component, and the outside of the tail plastic component is provided with an inlet and an outlet. A sealing plug is provided between the tail plastic component and the main body.

[0007] The other end of the main body is provided with a head plastic part, and a sealing plug is provided between the head plastic part and the main body;

[0008] The two PTC heating cores are connected in parallel and then connected to an external power source via an electrical connection wire.

[0009] As an improvement, the liquid channel in the main body is set as a circulation channel, so that the incoming liquid flows through the heating surfaces of the two PTC heating cores, thereby being fully heated, increasing the liquid temperature rise rate and even generating high-temperature steam, thereby improving product performance.

[0010] As an improvement, a through hole is provided in the middle of the two liquid channels of the main body. The through hole can be used to place a temperature control component to monitor the liquid. An NTC sensor is set near the outlet to monitor the medium temperature in real time.

[0011] As an improvement, a pressure relief valve is installed near the outlet of the tail plastic component to prevent excessive pressure in the chamber when the liquid vaporizes at high temperature.

[0012] As an improvement, a filter screen structure is installed at the top of the outlet to prevent foreign objects or scale from flowing out, ensuring that the heated liquid or steam does not contain scale or impurities, and also preventing impurities from clogging the outlet.

[0013] As an improvement, a tube is installed inside the liquid channel, and the tube is made of corrosion-resistant stainless steel to improve the corrosion resistance of the product. The tube is tightly connected to the liquid channel through a tube expansion process to improve heat transfer efficiency.

[0014] As an improvement, the ends of the tube and the sealing plugs are designed with matching conical profiles, and radial constraint and axial compression sealing are achieved simultaneously through conical surface fitting.

[0015] As an improvement, the body and the heat dissipation structure are two separate parts. The heat dissipation structure is connected to the body by bonding, and the grounding harness assembly is directly installed at the end of the heat dissipation structure.

[0016] As an improvement, the main body is made of aluminum profile with high thermal conductivity, and the heat dissipation structure is integrated with the main body. The heat dissipation structure is formed by the surface material on the upper and lower sides of the main body through the shovel teeth. Steps are symmetrically arranged on both sides of the outer surface of the cavity to ensure that the PTC heating core is subjected to uniform force and to avoid deforming the heat dissipation structure.

[0017] Compared with the existing technology, the beneficial effects of this utility model are as follows: This product adopts a new generation of PTC heating technology, which breaks through the single function limitation of traditional heating equipment and innovatively realizes the three-in-one integrated heating of warm air, hot water and high temperature steam. In addition, the product adopts a stainless steel circulation channel design, and through the coordinated work of dual PTC heating sources, it significantly improves corrosion resistance and increases the medium temperature rise rate. Furthermore, a filter screen structure is adopted near the outlet to filter out impurities in advance and prevent the outlet from being blocked. Attached Figure Description

[0018] To more clearly illustrate the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the finished product of this utility model.

[0020] Figure 2 This is an exploded view of the parts in Embodiment 1 of this utility model.

[0021] Figure 3 This is a schematic diagram of the main body of Embodiment 1 of this utility model.

[0022] Figure 4This is a schematic diagram of the liquid flow channel of the main body in Embodiment 1 of this utility model.

[0023] Figure 5 This is a schematic diagram of the integrated body and heat dissipation structure of Embodiment 2 of this utility model.

[0024] 1—Body; 11—Liquid Channel; 12—Receiving Cavity; 13—Mounting Hole; 14—Heat Dissipation Structure; 15—Through Hole; 16—Step; 2—PTC Heating Core; 3—Grounding Harness Assembly; 4—Tail Plastic Assembly; 41—Inlet; 42—Outlet; 43—Pressure Relief Valve; 44—NTC Sensor; 45—Filter Screen; 5—Sealing Plug; 6—Head Plastic Part; 7—Electrical Connection Wire; 8—Temperature Control Assembly; 9—Tube Body; Detailed Implementation

[0025] Exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0026] It should be understood that the terms "upper", "lower", "left", "right", "head", "tail", etc., 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 or 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.

[0027] The design will be further explained below with reference to the accompanying drawings in the structural specification.

[0028] like Figures 1-2 A multifunctional PTC heater includes a body 1, with two liquid channels 11 in the middle of the body 1. Each of the liquid channels 11 has a receiving cavity 12 on its upper and lower sides. A PTC heating core 2 is installed in each receiving cavity 12. A heat dissipation structure 14 is installed on the outer surface of the receiving cavity 12 away from the liquid channels 11.

[0029] One end of the main body 1 is provided with a tail plastic component 4, and the outer side of the tail plastic component 4 is provided with an inlet 41 and an outlet 42. A sealing plug 5 is provided between the tail plastic component 4 and the main body 1.

[0030] The other end of the body 1 is provided with a head plastic part 6, and a sealing plug 5 is provided between the head plastic part 6 and the body 1.

[0031] The two PTC heating cores 2 are connected in parallel and then connected to an external power source via an electrical connection line 7.

[0032] PTC heater core 2 is existing technology and will not be described in detail here. Example

[0033] like Figure 3 The liquid channel 11 of the main body 1 is set as a circulation channel, so that the incoming liquid flows through the heating surfaces of the two PTC heating cores 2, thereby being fully heated, increasing the liquid temperature rise rate and even generating high-temperature steam, thereby improving product performance.

[0034] Furthermore, a through hole 15 is provided in the middle of the two liquid channels 11 of the main body 1. The through hole 15 can not only reduce the weight of the entire product, but also place the temperature control component 8 to monitor the liquid. The temperature control component 8 is connected in series with the PTC heating core 2 and connected to an external power source through the electrical connection line 7. The temperature control component 8 includes at least one of a temperature controller and a fuse. Furthermore, in order to monitor the temperature of the liquid or vapor at the outlet in real time, an NTC sensor 44 is set near the outlet 42.

[0035] like Figure 2 To prevent excessive pressure in the chamber when the liquid vaporizes at high temperature, a pressure relief valve 43 is installed near the outlet 42 of the tail plastic component 4 to balance the pressure difference between the inside and outside of the product.

[0036] Furthermore, in order to prevent foreign objects or scale from flowing out, a filter screen structure 45 is installed at the upper end of the outlet 42 to ensure that the heated liquid or steam does not contain other scale or impurities, thus filtering out impurities and preventing blockage of the outlet.

[0037] like Figure 4 A tube 9 is installed inside the liquid channel 11. The tube 9 is made of corrosion-resistant stainless steel to improve the corrosion resistance of the product. The tube 9 is tightly connected to the liquid channel 11 through a tube expansion process to improve heat transfer efficiency.

[0038] Furthermore, both the end of the tube body 9 and the sealing plug 5 adopt a matching conical profile design, and radial constraint and axial compression sealing are achieved simultaneously through conical surface fitting.

[0039] like Figure 2 The main body 1 and the heat dissipation structure 14 are two independent parts. The heat dissipation structure 14 and the main body 1 are connected by bonding or welding. At the same time, the grounding wire harness assembly 3 is directly installed at the end of the heat dissipation structure 14. Example

[0040] like Figure 5 The difference between Embodiment 2 and Embodiment 1 is that the heat dissipation structure 14 and the body 1 are integrated. The heat dissipation structure 14 is formed by shaving teeth on the material of the upper and lower outer surfaces of the body 1. At the same time, in order to ensure the implementation of the pressing process (the PTC heating core 2 and the body 1 need to be tightly attached), steps 16 are symmetrically arranged on both sides of the outer surface of the receiving cavity 11 so that the PTC heating core 2 is subjected to uniform force and also to avoid deforming the heat dissipation structure.

[0041] The embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles of the embodiments, their practical application, or improvements to the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A multifunctional PTC heater, comprising a body (1) and a PTC heating core (2), characterized in that: The main body (1) has two liquid channels (11) in the middle position. Each of the upper and lower sides of the liquid channels (11) has a receiving cavity (12). Each receiving cavity (12) is equipped with a PTC heating core (2). A heat dissipation structure (14) is provided on the outer surface of the receiving cavity (12) away from the liquid channels (11). One end of the main body (1) is provided with a tail plastic component (4), and an inlet (41) and an outlet (42) are provided on the outside of the tail plastic component (4). A sealing plug (5) is provided between the tail plastic component (4) and the main body (1). The other end of the body (1) is provided with a head plastic part (6), and a sealing plug (5) is provided between the head plastic part (6) and the body (1). The two PTC heating cores (2) are connected in parallel and then connected to an external power source via an electrical connection line (7).

2. The multifunctional PTC heater according to claim 1, characterized in that: The liquid channel (11) of the main body (1) is configured as a circulation channel, so that the incoming liquid flows through the heating surfaces of the two PTC heating cores (2) and is thus fully heated, thereby increasing the temperature of the medium.

3. A multifunctional PTC heater according to claim 2, characterized in that: A through hole (15) is provided in the middle of the two liquid channels (11) of the main body (1). A temperature control component (8) is placed in the through hole (15) to control the medium temperature. An NTC sensor (44) is provided near the outlet (42).

4. A multifunctional PTC heater according to claim 3, characterized in that: A pressure relief valve (43) is provided near the outlet (42) of the tail plastic component (4) to balance the pressure difference inside and outside the liquid channel.

5. A multifunctional PTC heater according to claim 4, characterized in that: A filter structure (45) is provided at the upper end of the outlet (42) of the tail plastic component (4).

6. A multifunctional PTC heater according to claim 5, characterized in that: The liquid channel (11) is provided with a tube (9), which is made of corrosion-resistant stainless steel. The tube (9) is tightly connected to the liquid channel (11) through a tube expansion process to improve heat conduction efficiency.

7. A multifunctional PTC heater according to claim 6, characterized in that: The ends of the tube body (9) and the sealing plug (5) are both designed with matching conical contours, and radial constraint and axial compression sealing are achieved simultaneously through conical surface fitting.

8. A multifunctional PTC heater according to claim 7, characterized in that: The body (1) and the heat dissipation structure (14) are two independent parts. The heat dissipation structure (14) and the body (1) are connected by bonding. The grounding harness assembly (3) is directly installed at the end of the heat dissipation structure (14).

9. A multifunctional PTC heater according to claim 7, characterized in that: The main body (1) is made of aluminum profile, and the heat dissipation structure (14) is an integral part of the main body (1). The heat dissipation structure (14) is formed by the surface material on the upper and lower sides of the main body (1) through the shovel teeth. Steps (16) are symmetrically arranged on both sides of the outer surface of the cavity (12).

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