High-insulativity PTC (Positive Temperature Coefficient) variable-frequency liquid heater

Abstract

The utility model relates to the technical field of PTC (Positive Temperature Coefficient) heating, and particularly discloses a high-insulativity PTC variable-frequency liquid heater, which comprises a water inlet pipe (10), a connecting pipe (20) arranged on the water inlet pipe (10), a water outlet pipe (30) arranged on the connecting pipe (20), and a PCT (Positive Temperature Coefficient) heating component (40) which is arranged between the water outlet pipe (30) and the water inlet pipe (10) and has an insulating property, the PCT heating assembly with the insulating property is adopted, specifically, the insulating heat conduction parts are arranged between the heating element and the water inlet pipe and between the heating element and the water outlet pipe, the insulating heat conduction parts are made of the aluminum oxide ceramics, the aluminum oxide ceramics have insulating property and good heat conduction property, and the insulating heat conduction parts are attached to the heating element, so that the heat conduction performance of the heating element is improved. Current on the heating element can be effectively blocked, and the heat conduction effect of the heating element is not affected.

Description

Technical Field

[0001] This utility model relates to the field of PTC heating technology, and in particular to a high-insulation PTC variable frequency liquid heater. Background Technology

[0002] PTC heaters are a new type of electric heater consisting of a PTC heating element, positive and negative aluminum electrode sheets, and a packaged shell. Due to their technical advantages such as high heat exchange efficiency, safety and reliability, automatic temperature control, low power consumption, rapid heating, and small size, they have become one of the most widely used electric heating materials.

[0003] Existing PTC heaters typically involve directly attaching the PTC heating element to the liquid pipe or attaching it to the liquid pipe via an aluminum block. The PTC heating element then transfers heat to the liquid pipe or aluminum block to heat the liquid in the pipe. This method is highly prone to causing leakage current, as the current from the PTC heating element is directly conducted to the liquid pipe or then through the aluminum block, resulting in leakage current and a risk of electric shock. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a high-insulation PTC variable frequency liquid heater. The PTC heater is equipped with a PCT heating element with insulating properties, which can effectively prevent leakage.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A high-insulation PTC variable frequency liquid heater includes: an inlet pipe, a connecting pipe installed on the inlet pipe, an outlet pipe installed on the connecting pipe, and a PCT heating element with insulation properties disposed between the outlet pipe and the inlet pipe.

[0007] Preferably, the PCT heating assembly includes a heating element and insulating heat-conducting components disposed on the upper and lower sides of the heating element; the water inlet pipe and the water outlet pipe are connected to the PCT heating assembly through the insulating heat-conducting components.

[0008] Preferably, the insulating and thermally conductive component is made of alumina ceramic.

[0009] Compared with the prior art, this application has the following beneficial effects:

[0010] This utility model uses a PCT heating component with insulating properties. Specifically, an insulating heat-conducting component is set between the heating element and the inlet and outlet pipes. The insulating heat-conducting component is made of alumina ceramic, which not only has insulation properties but also good thermal conductivity. By attaching the insulating heat-conducting component to the heating element, the current on the heating element can be effectively blocked without affecting the heat conduction effect of the heating element. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only involve some embodiments of this utility model, and are not intended to limit this utility model.

[0012] Figure 1 This is a schematic diagram of the structure of a high-insulation PTC variable frequency liquid heater according to the present invention;

[0013] Figure 2 for Figure 1 A schematic diagram of the structure viewed from below;

[0014] Figure 3 for Figure 2 A schematic diagram of the AA cross-sectional structure;

[0015] Figure 4 for Figure 3 A schematic diagram of the structure of the PCT heating element. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0017] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0018] Unless otherwise defined, the technical or scientific terms used in this patent document shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model patent specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the element or object listed following "comprising" or its equivalents, and do not exclude other elements or objects. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are used only to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. 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, and therefore should not be construed as a limitation of this utility model.

[0019] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the features in the following embodiments can be combined with each other.

[0020] Example 1:

[0021] A high-insulation PTC variable frequency liquid heater includes: an inlet pipe 10, a connecting pipe 20 installed on the inlet pipe 10, an outlet pipe 30 installed on the connecting pipe 20, and a PCT heating element 40 with insulation properties disposed between the outlet pipe 30 and the inlet pipe 10.

[0022] like Figures 1 to 3 As shown, the inlet pipe 10 and the outlet pipe 30 are connected by a connecting pipe 20. The liquid is placed in the inlet pipe 10, the outlet pipe 30 and the connecting pipe 20, and heated by the PCT heating element 40 disposed between the inlet pipe 10 and the outlet pipe 30.

[0023] like Figure 3 As shown, the PCT heating assembly 40 includes a heating element 41 and insulating heat-conducting components 42 disposed on the upper and lower sides of the heating element 41; the water inlet pipe 10 and the water outlet pipe 30 are connected to the PCT heating assembly 40 through the insulating heat-conducting components 42.

[0024] Furthermore, the insulating and heat-conducting component 42 is made of alumina ceramic. Alumina ceramic is only one type of material for the insulating and heat-conducting component 42, and this embodiment does not limit it.

[0025] To prevent current from overflowing from both sides of the insulating heat-conducting element 42 onto the inlet pipe 10 and / or outlet pipe 30, the insulating heat-conducting element 42 is made in a shape that partially encloses the inlet pipe 10 or outlet pipe 30. This shape not only enhances the insulation performance of the PCT heating element 40, but also effectively prevents the inlet pipe 10 and / or outlet pipe 30 from deviating from the PCT heating element 40 due to thermal expansion and contraction during the heating process.

[0026] like Figure 4 As shown, when the inlet pipe 10 and the outlet pipe 30 are square tubes, the insulating heat-conducting component 42 includes a horizontal plate 421 and vertical plates 422 disposed at both ends of the horizontal plate 421; the inlet pipe 10 and the outlet pipe 30 are precisely embedded between the two vertical plates 422 and are in contact with the horizontal plate 421.

[0027] The insulating heat-conducting component 42 has vertical plates 422 at both ends of the horizontal plate 421. The water inlet pipe 10 and the water outlet pipe 30 are tightly fixed to the horizontal plate 421 by the two vertical plates 422, so as to prevent the water inlet pipe 10 and the water outlet pipe 30 from deviating from the horizontal plate 421 under the condition of thermal expansion and contraction.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-insulation PTC variable frequency liquid heater, characterized in that, include: Water inlet pipe (10), connecting pipe (20) installed on water inlet pipe (10), water outlet pipe (30) installed on connecting pipe (20), and PCT heating element (40) with insulation properties disposed between water outlet pipe (30) and water inlet pipe (10).

2. The high-insulation PTC variable frequency liquid heater according to claim 1, characterized in that, The PCT heating assembly (40) includes a heating element (41) and insulating heat-conducting components (42) disposed on the upper and lower sides of the heating element (41); the water inlet pipe (10) and the water outlet pipe (30) are connected to the PCT heating assembly (40) through the insulating heat-conducting components (42).

3. A high-insulation PTC variable frequency liquid heater according to claim 2, characterized in that, The insulating and heat-conducting component (42) is made of alumina ceramic.

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