CN211451117U

CN211451117U - PTC electric heater

Info

Publication number: CN211451117U
Application number: CN201922418645.8U
Authority: CN
Inventors: 丁光辉
Original assignee: Xiamen Wella Electrical Appliance Technology Co ltd
Current assignee: Xiamen Wella Electrical Appliance Technology Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-09-08
Anticipated expiration: 2029-12-27

Abstract

The utility model relates to a PTC electric heater, including the shell, the spherical groove of transversal excellent arcuation of personally submitting is seted up to the bottom of shell, and the bottom of shell is provided with the base, and the top of base is vertical to be fixed with the bracing piece, and the one end integrated into one piece that the base was kept away from to the bracing piece has universal ball, universal ball embedding spherical inslot and with spherical groove interference fit. The utility model has the advantages of conveniently adjusting the blowing direction of the warmer.

Description

PTC electric heater

Technical Field

The utility model belongs to the technical field of domestic appliance's technique and specifically relates to a PTC electric heater is related to.

Background

PTC is a kind of ceramic electric heating element for short. The fan is used for blowing air to flow through the PTC electric heating element to force convection, and the forced convection is used as a main heat exchange mode. The temperature limiter is arranged in the air inlet, and when the air inlet is blocked by the fan, the power can be automatically cut off. Some fan heaters also have the function of automatically cutting off power when the fan heater inclines or falls over.

The PTC electric heater is a heating appliance made by using PTC as a heating source, the air supply is soft when the PTC electric heater works, the temperature rise is fast, the PTC electric heater has an automatic constant temperature function, and the PTC elements generally have a waterproof function, so the PTC electric heater is suitable for being used in a bathroom and is an ideal portable household electric heater.

The Chinese utility model with publication number CN204388199U discloses a high-temperature intelligent PTC electric heater, which comprises a shell and an inner cavity, wherein the top and the bottom of the shell are hollow structures, and the rest parts are sealing structures; the inside of the shell is connected with a safety heat insulation plate; the inner cavity comprises a PTC thermistor, an insulating plate and a heat dissipation plate.

The above prior art solutions have the following drawbacks: the bottom of the PTC electric heater is relatively fixed, and is inconvenient to rotate, so that the PTC electric heater can be used only in a small range, and if the PTC electric heater is blown to the same place for a long time, the skin of a human body can feel uncomfortable.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a PTC electric heater, it has the advantage that conveniently adjusts the room heater direction of blowing to prior art exists not enoughly.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a PTC electric heater, includes the shell, the spherical groove of transversal excellent arcuation of personally submitting is seted up to the bottom of shell, the bottom of shell is provided with the base, the vertical bracing piece that is fixed with in top of base, the one end integrated into one piece that the base was kept away from to the bracing piece has universal ball, in the spherical groove of universal ball embedding and with spherical groove interference fit.

By adopting the technical scheme, due to interference fit, when no external force is applied, the relative position of the universal ball and the spherical groove is fixed, and the electric heater cannot shake; when having exogenic action, the outer wall of outside ball can take place relative rotation with spherical groove inside for the electric heater can the rotation of arbitrary angle, thereby enlarges the application range of electric heater, and the electric heater can not blow to same place for a long time, conveniently adjusts the direction of blowing of room heater, increases user's comfort level.

The present invention may be further configured in a preferred embodiment as: the air conditioner is characterized in that an air outlet and an air inlet are respectively arranged at two ends of the shell, an air outlet cover is arranged at the air outlet, a plurality of air blowing channels are arranged on the air outlet cover, an air inlet cover is arranged at the air inlet, and a plurality of air sucking channels are arranged on the air inlet cover.

Through adopting above-mentioned technical scheme, the air inlet cover can keep apart the inside heating element PTC electric heating ceramic body of electric heater with the external world with the play wind cover, avoids child's mistake to touch and causes the scald, increases the security of electric heater.

The present invention may be further configured in a preferred embodiment as: the PTC heating device is characterized in that the shell is hollow, a PTC electric heating ceramic body is arranged between the air outlet and the air inlet, and the PTC electric heating ceramic body is formed by combining a plurality of PTC heating bodies in parallel.

Through adopting above-mentioned technical scheme, the PTC electric heat ceramic body is parallelly connected by the PTC heat-generating body that a plurality of can independently work and is constituteed, increases the stability of electric heater work, even single PTC heat-generating body breaks down, the electric heater also can normally work.

The present invention may be further configured in a preferred embodiment as: and a heat radiation fan is arranged between the PTC electric heating ceramic plate and the air inlet, and the rotating axis direction of the heat radiation fan is vertical to the PTC electric heating ceramic plate.

By adopting the technical scheme, the wind power blown by the cooling fan towards the PTC electric heating ceramic body is maximum, the heat dissipated outwards by the PTC electric heating ceramic body is the most complete, the heat generated by the electric heater is maximum, and the heating and warm-keeping effects are best.

The present invention may be further configured in a preferred embodiment as: an installation cylinder is arranged on one side, close to the shell, of the air inlet cover, and a matching column in interference fit with the installation cylinder is arranged on the shell.

Through adopting above-mentioned technical scheme, interference fit through installation section of thick bamboo and cooperation post will intake air cover and shell fixed connection, simple structure dismantles simple to operate.

The present invention may be further configured in a preferred embodiment as: the air outlet cover and the shell are fixed through bolts.

Through adopting above-mentioned technical scheme, the bolt will go out the fan housing and fix on the shell, go out to be connected more stably between fan housing and the shell, guarantee the security of electric heater, convenient dismantlement and installation.

The present invention may be further configured in a preferred embodiment as: the PTC electric heating ceramic body is positioned on one side, close to the air inlet cover, in the PTC air gathering frame.

Through adopting above-mentioned technical scheme, PTC gathers wind frame can be fine will follow the hot-blast steam that the PTC electric heat ceramic body goes out to blow off and gathers together, then more concentrated blow off the hot-blast air in the electric heater in following the air-out cover, increase the heating effect of electric heater.

The present invention may be further configured in a preferred embodiment as: and one side of the PTC air gathering frame, which is close to the PTC electric heating ceramic body, is provided with a plurality of clamping grooves for mounting the PTC electric heating ceramic body.

Through adopting above-mentioned technical scheme, the PTC electric heat ceramic body passes through the draw-in groove installation fixed, and simple structure is stable, guarantees the stability of electric heater.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the electric heater can rotate at any angle, the application range of the electric heater is expanded, the electric heater cannot blow towards the same place for a long time, and the comfort level of a user is improved;

the PTC electric heating ceramic body is formed by connecting a plurality of PTC heating elements which can work independently in parallel, so that the working stability of the electric heater is improved;

3 PTC gathers wind frame can be fine gather together the steam that will go out from the PTC electric heat ceramic body and blow off, then more concentrated blow off the hot-blast in the electric heater in following out the fan housing, increases the heating effect of electric heater.

Drawings

FIG. 1 is an overall schematic view of the present embodiment;

FIG. 2 is an exploded view of the present embodiment;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

FIG. 4 is an enlarged schematic view of portion B of FIG. 2;

fig. 5 is a sectional view taken along line a-a of fig. 1.

In the figure, 1, a housing; 2. an air inlet; 3. an air inlet cover; 4. an air intake passage; 5. mounting the cylinder; 6. a mating post; 7. an air outlet; 8. an air outlet cover; 9. an air outlet channel; 10. a threaded hole; 11. a bolt; 12. a PTC wind-gathering frame; 13. a card slot; 14. a PTC electrothermal ceramic body; 1401. a PTC heating element; 1402. a wiring board; 15. installing a frame; 1501. mounting a plate; 16. a heat radiation fan; 1601. a rotating shaft; 17. a fixed block; 18. a spherical groove; 19. a base; 20. a support bar; 21. a universal ball.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a PTC electric heater, including shell 1, the inside fretwork of shell 1, shell 1 adopts fire-retardant ABS material to make.

Referring to fig. 2, an air inlet 2 is formed at one end of the housing 1, an air inlet cover 3 is arranged on the air inlet 2, and a plurality of annular air inlet channels 4 are formed in the air inlet cover 3. Four mounting cylinders 5 are integrally formed at four corners of the inner wall of the air inlet cover 3 close to the outer shell 1, the mounting cylinders 5 are hollow cylinders, the axis of each mounting cylinder 5 is perpendicular to the air inlet cover 3, four matching columns 6 (refer to fig. 3) are integrally formed at one side of the outer shell 1 close to the air inlet cover 3, and the matching columns 6 are cylindrical. The mounting cylinder 5 is sleeved in the matching column 6 and is in interference fit with the matching column 6, and the air inlet cover 3 is mounted at the air inlet 2 of the shell 1.

An air outlet 7 is formed in one end, far away from the air inlet 2, of the shell 1, an air outlet cover 8 is arranged on the air outlet 7, and a plurality of strip-shaped air outlet channels 9 are formed in the air outlet cover 8. The side wall of the shell 1 close to the air outlet 7 is provided with holes, four threaded holes 10 for connecting bolts 11 in a threaded manner are formed in four corners of the air outlet cover 8, and the air outlet 7 of the shell 1 is fixed with the air outlet cover 8 through the bolts 11.

The PTC wind gathering frame 12 is arranged in the shell 1, the PTC wind gathering frame 12 is located between the air inlet 2 and the air outlet 7, and the PTC wind gathering frame 12 is sleeved on the inner wall of the shell 1. The PTC wind gathering frame 12 is in a hollow conical shape, and one end, with a smaller inner diameter, of the PTC wind gathering frame 12 is located on one side close to the air inlet 2. Four clamping grooves 13 (refer to fig. 4) are formed in the conical part of the PTC air collecting frame 12 close to the air inlet 2, and a PTC electric heating ceramic body 14 is clamped in the clamping grooves 13.

The PTC electric heating ceramic body 14 is vertically arranged, and the PTC electric heating ceramic body 14 is formed by bonding three PTC heating bodies 1401. The PTC heating element 1401 is rectangular, a terminal plate 1402 is integrally formed at one end of the PTC heating element 1401, the terminal plate 1402 is flat, and the terminal plate 1402 is electrically connected to a power supply. The PTC electric heating ceramic body 14 is fixed on one side of the PTC wind gathering frame 12 far away from the wind outlet 7 through the clamping connection of the three PTC heating bodies 1401 on the wiring board 1402 and the clamping groove 13.

The PTC electric heating ceramic body 14 is fixedly bonded with a mounting frame 15 at one side close to the air inlet 2, the mounting frame 15 is in a cuboid frame shape, and a cooling fan 16 is wrapped in the mounting frame 15. The side wall of the mounting frame 15 far away from the PTC electric heating ceramic body 14 is integrally formed with a cross-shaped mounting plate 1501, the mounting plate 1501 is welded with a rotating shaft 1601 for the rotation of the cooling fan 16, the rotating shaft 1601 is cylindrical, and the axis of the rotating shaft 1601 is perpendicular to the PTC electric heating ceramic body 14.

Referring to fig. 5, a fixing block 17 is integrally formed at the bottom of the housing 1, the fixing block 17 is square, the fixing block 17 is made of plastic, a spherical groove 18 is formed in the side wall of the fixing block 17, which is far away from the housing 1, and the cross section of the spherical groove 18 is in a major arc shape.

The bottom of the fixed block 17 is horizontally provided with a base 19, and the base 19 is in a cuboid shape. The bottom welded fastening of base 19 has bracing piece 20, and bracing piece 20 is cylindricly, and the axis of bracing piece 20 is perpendicular with base 19, and the one end integrated into one piece that base 19 was kept away from to bracing piece 20 has universal ball 21, and universal ball 21 imbeds in spherical groove 18 and with spherical groove 18 interference fit.

The implementation principle of the embodiment is as follows: fix the base 19 of PTC electric heater on the plane, through rotatory electric heater, reach suitable angle, after the power is gone up to the PTC electric heater, PTC electric heating ceramic body 14 begins to work and generates heat, radiator fan 16 rotates, outside air gets into shell 1 inside from the air inlet cover after-blow to PTC electric heating ceramic body 14 and forms the warm braw, the shell 1 is discharged from the air outlet channel 9 of air outlet cover 8 to the warm-keeping comfortable effect of warm-keeping after the polymerization of PTC air gathering frame 12 of warm braw, bring the heat for the user.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a PTC electric heater, includes shell (1), its characterized in that: spherical groove (18) that the cross section is the major arc shape are seted up to the bottom of shell (1), the bottom of shell (1) is provided with base (19), the top of base (19) is vertically fixed with bracing piece (20), the one end integrated into one piece that base (19) were kept away from in bracing piece (20) has universal ball (21), universal ball (21) imbed in spherical groove (18) and with spherical groove (18) interference fit.

2. A PTC electrical heater according to claim 1, wherein: the air conditioner is characterized in that an air outlet (7) and an air inlet (2) are respectively arranged at two ends of the shell (1), the air outlet (7) is provided with an air outlet cover (8), a plurality of air outlet channels (9) are arranged on the air outlet cover (8), the air inlet (2) is provided with an air inlet cover (3), and a plurality of air inlet channels (4) are arranged on the air inlet cover (3).

3. A PTC electrical heater according to claim 2, wherein: the PTC electric heating shell is characterized in that the inside of the shell (1) is hollow, a PTC electric heating ceramic body (14) is arranged between the air outlet (7) and the air inlet (2), and the PTC electric heating ceramic body (14) is formed by connecting a plurality of PTC heating bodies (1401) in parallel.

4. A PTC electrical heater according to claim 3, wherein: a cooling fan (16) is arranged between the PTC electric heating ceramic body (14) and the air inlet (2), and the axis direction of rotation of the cooling fan (16) is perpendicular to the PTC electric heating ceramic body (14).

5. A PTC electrical heater according to claim 2, wherein: an installation cylinder (5) is arranged on one side, close to the shell (1), of the air inlet cover (3), and a matching column (6) in interference fit with the installation cylinder (5) is arranged on the shell (1).

6. A PTC electrical heater according to claim 2, wherein: the air outlet cover (8) is fixed with the shell (1) through a bolt (11).

7. A PTC electrical heater according to claim 3, wherein: the PTC wind-collecting shell is characterized in that a tubular PTC wind-collecting frame (12) is arranged in the shell (1), two ends of the PTC wind-collecting frame (12) are communicated with the wind inlet cover (3) and the wind outlet cover (8) respectively, and the PTC electric heating ceramic body (14) is positioned on one side, close to the wind inlet cover (3), in the PTC wind-collecting frame (12).

8. A PTC electric heater according to claim 7, wherein: one side of the PTC air gathering frame (12) close to the PTC electric heating ceramic body (14) is provided with a plurality of clamping grooves (13) for mounting the PTC electric heating ceramic body (14).