Energy storage PTC heater

Abstract

The utility model provides an energy storage PTC heater which comprises a shell, a cover plate is arranged at the upper end of the shell, preformed holes are formed in the cover plate and the bottom end of the shell, the tail portion of a PTC heating core penetrates through the preformed hole of the shell and abuts against a baffle arranged on the back face of the shell, the baffle is fixedly connected with the shell, and the head portion of the PTC heating core penetrates into the preformed hole of the cover plate and abuts against a pressing plate. The electric connection portion of the head portion of the PTC heating core is connected with the circuit board through a reserved hole of the pressing plate, a housing is arranged on the circuit board, a cable of the circuit board penetrates through the housing to be connected with an external power source, after electrification, the PTC heating core works to heat liquid in a cavity of the shell, and a water inlet and a water outlet are formed in the outer side of the shell. The utility model has the beneficial effects that the PTC heating core is arranged in the liquid in the circulating chamber and is in direct contact with the liquid, heat conduction from any angle can be taken away by the liquid, the heating efficiency is improved, the heat loss is reduced, the PTC heating core tube body is made of stainless steel, the PTC heating core tube body is corrosion-resistant, and the service life of the product is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to physical field especially, relates to heating device, a kind of energy storage PTC heater BACKGROUND

[0002] The utility model relates to an energy storage PTC heater.

[0003] PTC heater is widely used in new energy automobile battery heating and energy storage device due to constant temperature self-regulation and dry burning resistance. However, the structure of the PTC liquid heater in the prior art is still to insert the PTC heating core into the aluminum alloy casting with a wedge-shaped deep groove, and then put the aluminum alloy casting into the liquid circulating chamber. This causes the heat energy of the PTC heating core to be first transferred to the aluminum alloy casting, which then transfers the heat to the surrounding heating medium. There is a certain heat loss in the intermediate heat exchange process, resulting in low thermal efficiency. Moreover, the aluminum alloy casting has poor corrosion resistance in the liquid, and there is a risk of liquid leakage after long-term immersion, affecting the service life of the product. SUMMARY

[0004] To solve the above problems, the utility model provides an energy storage PTC heater to improve product performance. The utility model provides the following technical scheme:

[0005] An energy storage PTC heater includes a housing, a cover plate is arranged at the upper end of the housing, a reserved hole is arranged at the bottom end of the housing and the cover plate, the tail of the PTC heating core passes through the reserved hole of the housing and abuts against the baffle arranged at the back of the housing, the baffle is fixedly connected with the housing, the head of the PTC heating core penetrates into the reserved hole of the cover plate and abuts against the pressing plate, the electric connection part at the head of the PTC heating core is connected with the circuit board through the reserved hole of the pressing plate, a cover is arranged on the circuit board, the cable of the circuit board penetrates through the cover and is connected with the external power supply, after being powered on, the PTC heating core works to heat the liquid in the cavity of the housing, and a water inlet and a water outlet are arranged at the outer side of the housing.

[0006] Further, a tail groove is arranged outside the reserved hole at the bottom end of the housing, a head groove is arranged on the side of the cover plate away from the cavity, an axial sealing ring is arranged in the tail groove and the head groove, a baffle and a pressing plate are arranged on the axial sealing ring, a radial sealing groove is arranged on the end face of the head of the housing, and a radial sealing ring is arranged in the radial sealing groove. The radial sealing ring ensures the sealing performance between the cover plate and the housing, and the cover plate, the baffle, and the pressing plate are sealingly and fixedly connected with the housing.

[0007] Further, the axial sealing ring is made of high-temperature-resistant silica gel, and the cross section is in the shape of "8".

[0008] Further, the cover plate is provided with a temperature controller groove in the direction of the shell chamber, and a temperature controller is arranged in the temperature controller groove, so that the temperature controller can directly sense the temperature of the liquid because the temperature controller groove extends into the shell chamber and directly contacts the liquid.

[0009] Further, the pressing plate is provided with a convex groove in the direction away from the shell, and the top of the convex groove abuts against the heating core to prevent axial movement of the PTC heating core, and the top of the convex groove is provided with an opening, and the electrical connection part of the PTC heating core passes through the hole to connect the circuit board.

[0010] Further, the blind hole is arranged on the side of the baffle plate facing the shell, and a protruding block is arranged in the blind hole, and the protruding block extends into the pipe body of the PTC heating core to play a positioning role.

[0011] Further, the shell is provided with a mounting hole on the outside, and a reinforcing ring is arranged in the mounting hole.

[0012] Further, the pipe body of the PTC heating core is made of stainless steel material.

[0013] Further, a protruding hole is arranged at the outlet of the shell, and a screw thread is arranged on the outside to install a waterproof gland.

[0014] Compared with the prior art, the beneficial effects of the PTC heating core are as follows: the PTC heating core is arranged in the liquid in the circulating chamber and directly contacts the liquid, heat conduction from any angle can be taken away by the liquid, the heating efficiency is improved, heat loss is reduced, the shell of the PTC heating core is made of stainless steel material, corrosion resistance is improved, and the service life of the product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 It is a schematic diagram of an energy storage PTC heater

[0017] Figure 2 It is an explosion schematic diagram of an energy storage PTC heater

[0018] Figure 3 It is a sectional view of an energy storage PTC heater

[0019] Figure 4 It is a schematic diagram of a shell

[0020] Figure 5 It is a schematic diagram of a cover plate

[0021] Figure 6is a baffle diagram

[0022] Figure 7 is a pressing plate diagram

[0023] 1 - shell; 11 - water inlet; 12 - water outlet; 13 - tail groove; 14 - radial sealing groove; 15 - mounting hole; 16 - reinforcing ring; 17 - material reducing hole; 2 - cover plate; 201 - head groove; 202 - temperature controller groove; 3 - PTC heating core; 31 - PTC heating core tube body; 4 - baffle; 41 - groove; 411 - protrusion; 5 - pressing plate; 51 - protruding groove; 511 - hole; 6 - circuit board; 7 - cover; 8 - axial sealing ring; 9 - radial sealing ring; 10 - luer; 20 - temperature controller; DETAILED DESCRIPTION

[0024] The exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. The same reference numbers in the drawings indicate the same or similar elements throughout the several aspects. Although various aspects of the embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless specifically noted.

[0025] It should be understood that the terms "head", "tail", "inner", "outer", "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application or simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] The design will be further described below in conjunction with the structural description of the drawings.

[0027] As Figures 1-2 A PTC energy storage heater comprises a shell 1, a cover plate 2 is arranged at the upper end of the shell 1, the cover plate 2 and the bottom end of the shell 1 are both provided with a reserved hole, the tail of the PTC heating core 3 passes through the reserved hole of the shell 1 and abuts against the baffle 4 arranged at the back of the shell 1, the baffle 4 is fixedly connected with the shell 1, the head of the PTC heating core 3 penetrates into the reserved hole of the cover plate 2 and abuts against the pressing plate 5, the electrical connection part of the head of the PTC heating core 3 is connected with the circuit board 6 through the reserved hole of the pressing plate 5, a cover 7 is arranged on the circuit board 6, the cable of the circuit board 6 penetrates through the cover 7 and is connected with an external power supply, after being powered on, the PTC heating core works to heat the liquid in the cavity of the shell, and the shell 1 is provided with a water inlet 11 and a water outlet 12 on the outside.

[0028] The process of the above-mentioned PTC heating core 3 is a prior art, which will not be described here again, except that the tube body 31 is shown, other structures are not drawn.

[0029] As Figures 2-3In order to ensure the sealing performance of the chamber of the shell 1, a tail groove 13 is arranged outside the reserved hole at the bottom end of the shell 1, a head groove 201 is arranged on the side of the cover plate 2 away from the chamber, and an axial sealing ring 8 is arranged in the tail groove 13 and the head groove 201 when the PTC heating core 3 penetrates, the axial sealing ring 8 is made of high-temperature-resistant silica gel, and the cross section is in the shape of "8", which improves the sealing effect, a baffle 4 and a pressing plate 5 are arranged on the upper surface of the axial sealing ring 8, a radial sealing groove 14 is arranged on the head end surface of the shell 1, a radial sealing ring 9 is arranged in the radial sealing groove 14, the radial sealing ring 9 ensures the sealing performance between the cover plate 2 and the shell 1, and the cover plate 2, the baffle 4 and the pressing plate 5 are all fixedly connected with the shell in a sealing manner, such as bolt connection.

[0030] As Figure 5 The cover plate 2 is provided with a temperature controller groove 202 in the direction of the chamber of the shell 1, and a temperature controller 20 is arranged in the temperature controller groove 202, since the temperature controller groove 202 extends into the chamber of the shell and directly contacts the liquid, the temperature controller 20 can directly sense the temperature of the liquid, thereby improving the sensitivity of product temperature control.

[0031] As Figure 7 In addition to pressing the axial sealing ring 8, the pressing plate 5 is provided with a convex groove 51 in the direction away from the shell 1, the top of the convex groove 51 is just pressed against the PTC heating core 3, so as to prevent the axial movement of the PTC heating core 3, and an opening 511 is arranged on the top of the convex groove 51, and the electrical connection part of the PTC heating core is connected with the circuit board 6 through the opening.

[0032] As Figure 6 The baffle 4 is provided with a blind hole 41 on the side facing the shell, and a protruding block 411 is arranged in the blind hole 41, the protruding block 411 extends into the pipe body 31 of the PTC heating core and plays a positioning role.

[0033] As Figure 4 A mounting hole 15 is arranged on the outer side of the shell 1, a reinforcing ring 16 is arranged in the mounting hole 15, so as to ensure the installation strength and prevent the mounting hole from cracking, and a material reducing hole 17 is arranged on the outer side of the shell 1, which is beneficial to the lightweight design of the product.

[0034] As Figure 2 The pipe body 31 of the PTC heating core is made of stainless steel material, which is corrosion-resistant and improves the service life of the product.

[0035] As Figure 2 The cover shell 7 is provided with a protruding hole 71 at the outlet, and a thread is arranged on the outer side of the protruding hole 71, a waterproof gland 10 is installed, and the waterproof performance of the product is ensured.

[0036] The shell 1, the cover plate 2 and the baffle 4 are all made of high-temperature-resistant plastic material and are injection molded.

[0037] Having described embodiments of the application above, the descriptions are illustrative and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art. The selection of terms to be used in the description is intended to best explain the principles of the embodiments, the practical application, or the improvements over the technology in the art, or to enable other of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An energy storage PTC heater characterized by: The utility model provides a PTC heating core liquid heating device, including a casing (1), the upper end of casing (1) sets up a cover plate (2), the bottom end of casing (1) is provided with reserved hole, PTC heating core (3) tail passes through the reserved hole of casing (1), and the back of casing (1) is provided with baffle (4) that sets up, baffle (4) is fixedly connected with casing (1), and the head of PTC heating core (3) is inserted into the reserved hole of cover plate (2), and the electric connection of PTC heating core (3) head is connected with circuit board (6) through the reserved hole of pressing plate (5), and the upper surface of circuit board is provided with a cover (7), and the cable of circuit board (6) passes through cover (7) and is connected with external power supply, after electrifying, PTC heating core works, and the liquid in the cavity of casing is heated, and the outside of casing (1) is provided with water inlet (11) and water outlet (12).

2. An energy storing PTC heater according to claim 1, characterized in that: The bottom end of casing (1) is provided with tail recess (13) outside reserved hole, and the side, away from the cavity of cover plate (2) reserved hole is provided with head recess (201), and the axial sealing ring (8) is arranged in tail recess (13) and head recess (201), and the baffle (4) and pressing plate (5) are arranged on the upper surface of axial sealing ring (8), and the head end surface of casing (1) is provided with radial sealing recess (14), and radial sealing recess (14) is provided with radial sealing ring (9), and radial sealing ring (9) ensures the sealing performance between cover plate (2) and casing (1), and cover plate (2), baffle (4) and pressing plate (5) are all sealingly fixedly connected with casing (1).

3. An energy storing PTC heater according to claim 2, characterized in that: The axial sealing ring (8) adopts high-temperature-resistant silica gel, and the cross section presents "8" type.

4. An energy storing PTC heater according to claim 3, characterized in that: The cover plate (2) is provided with a thermostat recess (202) towards the cavity of the casing (1), and a thermostat (20) is arranged in the thermostat recess (202). Since the thermostat recess (202) extends into the cavity of the casing and directly contacts the liquid, the thermostat (20) can directly sense the temperature of the liquid.

5. An energy storing PTC heater according to claim 4, characterized in that: The pressing plate (5) is provided with a convex groove (51) away from the casing (1), and the top of the convex groove (51) abuts against the PTC heating core (3) to prevent the axial movement of the PTC heating core (3). The top of the convex groove (51) is provided with an opening (511), and the electric connection of the PTC heating core (3) passes through the opening to connect the circuit board (6).

6. An energy storing PTC heater according to claim 5, characterized in that: The baffle (4) is provided with a blind hole (41) towards the casing (1), and a protrusion (411) is arranged in the blind hole. The protrusion (411) extends into the PTC heating core tube (31) to serve as a positioning element.

7. An energy storing PTC heater according to claim 6, characterized in that: The casing (1) is provided with a mounting hole (15) on the outside, and a reinforcing ring (16) is arranged in the mounting hole (15). The casing (1) is provided with a material reducing hole (17) on the outside.

8. The energy storing PTC heater according to claim 1, wherein: The PTC heating core tube (31) is made of stainless steel.

9. A stored energy PTC heater according to any one of claims 1 to 8, wherein: The cover (7) is provided with a protruding hole (71) at the outlet, and a thread is arranged on the outside to install a waterproof gland (10).

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