CN214665156U

CN214665156U - Electric heater

Info

Publication number: CN214665156U
Application number: CN202120285495.2U
Authority: CN
Inventors: 黄桂朝; 王月; 井峰; 林伟林
Original assignee: Zhongshan Kaixuan Vacuum Science and Technology Co Ltd
Current assignee: Zhongshan Kaixuan Vacuum Science and Technology Co Ltd
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-11-09
Anticipated expiration: 2031-02-01

Abstract

The utility model relates to the technical field of heating, and provides an electric heater, which comprises a body, a first electric heating part and a second electric heating part, wherein the body is provided with a first accommodating cavity, a second accommodating cavity and a channel, and the first accommodating cavity is communicated with the second accommodating cavity through the channel; the first electric heating part comprises an electric heating pipe, the electric heating pipe comprises a heating pipe section and a non-heating pipe section, and the heating pipe section is positioned in the first accommodating cavity; the second electric heating part is arranged in the second accommodating cavity; wherein, when the body was vertically placed, first chamber and the second of holding all followed vertical direction and extended, and non-heating tube section is located the top of passageway. Because the electrothermal tube of the first electric heating part comprises the heating tube section and the non-heating tube section, namely when the body is vertically placed, the part of the electrothermal tube, which is not contacted with the liquid, is the non-heating tube section, namely the problem that the heating tube section is not contacted with the liquid can not occur, so that the damage to the electrothermal tube is avoided, and the service life of the electric heater is prolonged.

Description

Electric heater

Technical Field

The utility model relates to a heating technology field especially relates to an electric heater.

Background

When the existing equipment heats a medium through an electric heater, the common heater is installed in a side direction for safety in use, and the installation mode is single. Moreover, if the heating medium of the electric heater in the related art is not in contact with the heating pipe, the service life of the heating pipe is easily shortened, and the junction box is easily interfered by the high temperature generated by the electric heating pipe, so that the service life is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides an electric heater to improve electric heater's life.

The utility model provides an electric heater, include:

the device comprises a body, a first accommodating cavity, a second accommodating cavity and a channel, wherein the first accommodating cavity and the second accommodating cavity are communicated through the channel;

the first electric heating part comprises an electric heating pipe, the electric heating pipe comprises a heating pipe section and a non-heating pipe section, and the heating pipe section is positioned in the first accommodating cavity;

the second electric heating part is arranged in the second accommodating cavity;

wherein, when the body was vertically placed, first chamber and the second of holding all followed vertical direction and extended, and non-heating tube section is located the top of passageway.

In one embodiment of the present invention, at least a portion of the non-heating pipe section is located within the first receiving cavity.

In an embodiment of the present invention, the first electric heating part and the second electric heating part are the same structure, and the first electric heating part further includes:

the non-heating pipe section of the electric heating pipe is connected to the junction box, the junction box is located on the outer side of the body, and a cable connecting port is formed in the junction box.

In an embodiment of the present invention, the electric heating tube is plural, and the first electric heating portion further includes:

the fixing plate is provided with a plurality of electric heating tubes at intervals.

In an embodiment of the present invention, the fixing plate is located in the first accommodating chamber.

In an embodiment of the present invention, the body includes:

the first tube body is provided with a first accommodating cavity, and the first electric heating part is connected with the first tube body;

the second tube body is provided with a second accommodating cavity, and the second electric heating part is connected to the second tube body;

the backing plate, first body is connected on the backing plate, and the second body is connected on the backing plate.

In an embodiment of the present invention, the body further includes:

the second pipe body is provided with a channel, and two ends of the second pipe body penetrate through the first pipe body and the second pipe body respectively;

wherein, the third body is connected to the first body and the second body and keeps away from one side of backing plate.

In an embodiment of the present invention, the body further includes:

the protection part fills the clearance between first body and the second body, and first body, second body and third body cladding are in the protection part.

In one embodiment of the present invention, the body is provided with an inlet channel and an outlet channel, the inlet channel is communicated with the first accommodating cavity, and the outlet channel is communicated with the second accommodating cavity;

wherein liquid enters the body through the inlet passage and is discharged through the outlet passage.

In an embodiment of the present invention, the electric heater further includes:

the first temperature measuring part is used for acquiring the temperature value of the first electric heating part or the second electric heating part;

and the second temperature measuring part is used for acquiring the temperature value of the liquid discharged by the outlet channel.

The utility model discloses an electric heater includes body, first electric heating portion and second electric heating portion, realizes the heating to this internal liquid through first electric heating portion and second electric heating portion. Because the electrothermal tube of the first electric heating part comprises the heating tube section and the non-heating tube section, namely when the body is vertically placed, the part of the electrothermal tube, which is not contacted with the liquid, is the non-heating tube section, namely the problem that the heating tube section is not contacted with the liquid can not occur, so that the damage to the electrothermal tube is avoided, and the service life of the electric heater is prolonged.

Drawings

The various objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:

FIG. 1 is a schematic diagram illustrating a first perspective of an electric heater according to an exemplary embodiment;

FIG. 2 is a schematic diagram illustrating a second perspective of an electric heater according to an exemplary embodiment;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic diagram illustrating a third perspective of an electric heater according to an exemplary embodiment;

FIG. 5 is a schematic structural diagram illustrating a first electrical heating portion of an electrical heater according to one exemplary embodiment;

fig. 6 is a schematic cross-sectional view at B-B in fig. 5.

The reference numerals are explained below:

10. a body; 11. a first accommodating chamber; 111. an inlet channel; 12. a second accommodating chamber; 121. an outlet channel; 13. a channel; 14. a first pipe body; 141. a first flange; 142. a metal wrap pad; 143. a first fastening component; 15. a second tube body; 16. a third tube; 17. a base plate; 18. a protective part; 19. lifting lugs; 20. a first electric heating section; 21. an electric heating tube; 211. a heat generation pipe section; 212. a non-heat-generating tube section; 22. a junction box; 221. a cable connector; 222. a second fastening component; 23. a fixing plate; 24. a second flange; 30. a second electric heating section; 40. a first temperature measuring section; 50. a second temperature measuring part.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures to fall within the scope of the invention.

An embodiment of the present invention provides an electric heater, please refer to fig. 1 to fig. 6, the electric heater includes: the device comprises a body 10, wherein a first accommodating cavity 11, a second accommodating cavity 12 and a channel 13 are arranged on the body 10, and the first accommodating cavity 11 is communicated with the second accommodating cavity 12 through the channel 13; the first electric heating part 20, the first electric heating part 20 includes the electrothermal tube 21, the electrothermal tube 21 includes a heating tube section 211 and a non-heating tube section 212, the heating tube section 211 is located in the first accommodating cavity 11; a second electric heating portion 30, the second electric heating portion 30 being provided to the second accommodation chamber 12; when the body 10 is vertically placed, the first accommodating cavity 11 and the second accommodating cavity 12 both extend in the vertical direction, and the non-heat-generating tube section 212 is located above the channel 13.

The electric heater of an embodiment of the present invention includes a body 10, a first electric heating part 20 and a second electric heating part 30, and the first electric heating part 20 and the second electric heating part 30 are used to heat the liquid in the body 10. Since the electric heating tube 21 of the first electric heating part 20 includes the heating tube section 211 and the non-heating tube section 212, that is, when the body 10 is vertically placed, the part of the electric heating tube 21 that does not contact with the liquid is the non-heating tube section 212, that is, the problem that the heating tube section 211 does not contact with the liquid does not occur, so as to avoid damage to the electric heating tube 21, thereby prolonging the service life of the electric heater.

It should be noted that, the liquid flows in the first accommodating chamber 11 and the second accommodating chamber 12, and since the liquid is communicated between the first accommodating chamber 11 and the second accommodating chamber 12 through the channel 13, when the body 10 is vertically placed, there may be no liquid in the portion higher than the channel 13, and therefore if the tubular section of the electrothermal tube 21 higher than the channel 13 also generates heat, the problem that the heat cannot be dissipated in time may occur. Therefore, in the present embodiment, by providing the electric heating tube 21 with the non-heating tube section 212, the problem that the electric heating tube 21 is damaged due to self-heating can be avoided even if the body 10 is vertically placed.

In one embodiment, the first electrical heating part 20 and the second electrical heating part 30 are the same structure, i.e., the electrothermal tube of the second electrical heating part 30 also includes a heating tube section and a non-heating tube section.

It should be noted that, the specific structures of the heat generation pipe section and the non-heat generation pipe section are not limited, the heat generation pipe section may refer to the electric heat generation principle in the related art, and the non-heat generation pipe section may avoid direct heat generation as long as it is not combined with the heat generation part.

In one embodiment, at least a portion of the non-heat generating tube section 212 is located in the first accommodating cavity 11, i.e. the electrothermal tube 21 may be located entirely in the first accommodating cavity 11, or a portion of the non-heat generating tube section 212 is located outside the first accommodating cavity 11, thereby forming a heat dissipating section.

In one embodiment, as shown in fig. 5, the first electrical heating portion 20 and the second electrical heating portion 30 are the same structure, and the first electrical heating portion 20 further includes: the junction box 22, the non-heating tube section 212 of the electric heating tube 21 is connected to the junction box 22, the junction box 22 is located at the outer side of the body 10, the junction box 22 is provided with a cable connector 221, and an external power supply component is connected with the cable connector 221, so that power supply to the electric heating tube 21 is realized, the heating tube section 211 of the electric heating tube 21 is heated, and the heating effect on liquid is realized.

It should be noted that the second electric heating part 30 also includes a junction box, and is connected to an external power supply component through a cable connector on the junction box, so as to supply power to the electric heating tube, so that the heating tube section of the electric heating tube generates heat, thereby achieving the heating effect on the liquid.

In one embodiment, referring to fig. 2 and 5, the body 10 includes a first flange 141, a metal winding pad 142, and a first fastening assembly 143, the first electric heating part 20 further includes a second flange 24, the metal winding pad 142 is disposed between the first flange 141 and the second flange 24, and the first flange 141 and the second flange 24 are connected by the first fastening assembly 143. The first fastening assembly 143 includes a bolt, a nut, and a washer. The first fastening members 143 are plural, and the plural first fastening members 143 are connected to the first flange 141 and the second flange 24 at intervals.

The connection method of the second electric heating portion 30 and the main body 10 may refer to the connection method described above.

In one embodiment, the junction box 22 includes a main body and a cover body, the main body and the cover body are connected by the second fastening assembly 222, i.e. the main body is provided with a flange, and the cover body can also be a flange, and the second fastening assembly 222 includes bolts, nuts, gaskets, etc., so as to connect the two flanges. The second fastening member 222 may be plural, and the plural second fastening members 222 are provided at intervals.

In one embodiment, as shown in fig. 5 and 6, the electric heating tube 21 is plural, and the first electric heating part 20 further includes: the fixing plate 23 is provided with a plurality of electric heating tubes 21 at intervals on the fixing plate 23. The fixing plate 23 realizes the fixing of the plurality of electric heating tubes 21, so that the plurality of electric heating tubes 21 are located at the preset positions, thereby avoiding the occurrence of position change and ensuring the heating effect.

In one embodiment, the electric heating tube 21 may be a U-shaped electric heating tube, and the electric heating tube 21 may be made of stainless steel.

In one embodiment, the fixing plate 23 is located in the first accommodating chamber 11, i.e. the relative position of each electrothermal tube 21 in the first accommodating chamber 11 is ensured to be fixed.

In one embodiment, as shown in fig. 3, the body 10 includes: a first pipe 14, the first pipe 14 forming a first receiving chamber 11, the first electric heating part 20 connected to the first pipe 14; a second pipe 15, the second pipe 15 having a second receiving chamber 12 formed therein, the second electric heating part 30 being connected to the second pipe 15; and a backing plate 17, the first tube 14 being connected to the backing plate 17, and the second tube 15 being connected to the backing plate 17.

Specifically, the first pipe 14 and the second pipe 15 form a first accommodating chamber 11 and a second accommodating chamber 12, respectively, and the first electric heating part 20 and the second electric heating part 30 are connected to the first pipe 14 and the second pipe 15, respectively, so that the first electric heating part 20 and the second electric heating part 30 heat the liquid passing through the first accommodating chamber 11 and the second accommodating chamber 12, respectively. The backing plate 17 forms a support plate for the electric heater, i.e. the backing plate 17 is a support substrate when the electric heater is placed vertically.

The first pipe 14 and the second pipe 15 may communicate with each other through an external pipe, or they may directly contact each other and form a communication effect by abutting.

In one embodiment, as shown in fig. 3, the body 10 further includes: a third pipe 16, wherein the third pipe 16 is provided with a channel 13, and two ends of the third pipe 16 respectively penetrate through the first pipe 14 and the second pipe 15; wherein, the third tube 16 is connected to the first tube 14 and the second tube 15 at a side away from the pad 17, that is, when the body 10 is vertically placed, the third tube 16 has a certain distance from the pad 17, so as to ensure that the liquid can overflow the electrothermal tube with the maximum length.

In one embodiment, as shown in fig. 3, the body 10 further includes: the protection part 18, the protection part 18 fills the clearance between the first tubular body 14 and the second tubular body 15, and the first tubular body 14, the second tubular body 15 and the third tubular body 16 are wrapped in the protection part 18. The protector 18 may include a heat insulating portion filled between the first pipe 14 and the second pipe 15, and an outer case protecting the first pipe 14, the second pipe 15, and the third pipe 16.

In one embodiment, the first tubular body 14, the second tubular body 15, and the third tubular body 16 can each be a seamless tube.

In some embodiments, the body 10 may be a unitary structure, i.e., the first receiving cavity 11, the second receiving cavity 12, and the channel 13 are bore segments formed in the body 10. And is directly connected to the body 10 in a configuration as shown in fig. 4.

In one embodiment, as shown in fig. 3, the body 10 is provided with an inlet channel 111 and an outlet channel 121, the inlet channel 111 is communicated with the first accommodating chamber 11, and the outlet channel 121 is communicated with the second accommodating chamber 12; wherein, the liquid enters the body 10 through the inlet channel 111 and is discharged through the outlet channel 121, i.e. the liquid is heated by the first electric heating part 20 in the first accommodating cavity 11 in sequence, then enters the second accommodating cavity 12 through the channel 13, is heated by the second electric heating part 30 and is then discharged. Wherein the liquid may be water.

In one embodiment, the body 10 is provided with a lifting lug 19. The lifting lug 19 may be at least two.

In some embodiments, both the inlet channel 111 and the outlet channel 121 may be formed by flanges.

In one embodiment, as shown in fig. 3, the electric heater further comprises: a first temperature measuring part 40, wherein the first temperature measuring part 40 is used for acquiring a temperature value of the first electric heating part 20 or the second electric heating part 30; and a second temperature measuring unit 50, wherein the second temperature measuring unit 50 is used for acquiring a temperature value of the liquid discharged from the outlet channel 121. The first temperature measuring part 40 and the second temperature measuring part 50 can obtain the temperature inside the body 10 and the temperature of the heated liquid.

In some embodiments, the first thermometric section 40 and the second thermometric section 50 may both be platinum resistors.

The utility model discloses an electric heater of embodiment can be arranged in heating system, through the structure that changes electric heating pipe and heater body, realizes heater simple to operate and increases the effect of security performance. When the electric heater is transversely installed, the electric heating tubes are all contacted with liquid. When the electric heater needs to be vertical, the electric heater is vertically installed on the pump body, the upper part of the electric heating pipe does not flow oil due to the flowing of the heat transfer medium of the heating medium, and the non-heating pipe section does not cause pipeline damage even if not contacting the heating medium due to the existence of the non-heating pipe section, so that the free installation and the safety guarantee can be realized.

The utility model discloses an electric heater can adapt to the electric heater mounting means of different occasions, satisfies the installation requirement of different equipment, and commonality and practicality are strengthened. The electric heating tube can be prevented from being dry-burned without oil, and the safety performance is further improved. And the junction box is separated from the heating position of the heating pipe section through the non-heating pipe section, so that the junction box is not influenced by the temperature of the heating pipe, and the stability of the electric heater is greatly improved.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and exemplary embodiments be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. An electric heater, comprising:

the device comprises a body (10), wherein a first accommodating cavity (11), a second accommodating cavity (12) and a channel (13) are arranged on the body (10), and the first accommodating cavity (11) is communicated with the second accommodating cavity (12) through the channel (13);

a first electrical heating section (20), the first electrical heating section (20) comprising an electrical heating tube (21), the electrical heating tube (21) comprising a heating tube section (211) and a non-heating tube section (212), the heating tube section (211) being located within the first receiving cavity (11);

a second electric heating portion (30), the second electric heating portion (30) being provided to the second accommodation chamber (12);

when the body (10) is vertically placed, the first accommodating cavity (11) and the second accommodating cavity (12) both extend along the vertical direction, and the non-heating tube section (212) is located above the channel (13).

2. An electric heater according to claim 1, wherein at least part of the non-heat generating tube section (212) is located within the first receiving chamber (11).

3. The electric heater according to claim 1, wherein the first electric heating portion (20) and the second electric heating portion (30) are the same structure, the first electric heating portion (20) further comprising:

the non-heating pipe section (212) of the electric heating pipe (21) is connected to the junction box (22), the junction box (22) is located on the outer side of the body (10), and a cable connecting port (221) is formed in the junction box (22).

4. The electric heater according to claim 1, wherein the electric heating tube (21) is plural, and the first electric heating part (20) further comprises:

and a fixing plate (23), wherein the electric heating tubes (21) are arranged on the fixing plate (23) at intervals.

5. Electric heater according to claim 4, characterised in that said fixing plate (23) is located inside said first housing chamber (11).

6. The electric heater according to claim 1, characterized in that the body (10) comprises:

a first pipe body (14), the first pipe body (14) being formed with the first accommodation chamber (11), the first electric heating portion (20) being connected to the first pipe body (14);

a second pipe (15), the second pipe (15) having the second housing chamber (12) formed therein, the second electric heating section (30) being connected to the second pipe (15);

a backing plate (17), the first tube (14) connect in on the backing plate (17), the second tube (15) connect in on the backing plate (17).

7. The electric heater according to claim 6, characterized in that the body (10) further comprises:

a third pipe (16), wherein the channel (13) is formed in the third pipe (16), and two ends of the third pipe (16) respectively penetrate through the first pipe (14) and the second pipe (15);

wherein the third tube (16) is connected to the first tube (14) and the second tube (15) on a side remote from the pad (17).

8. The electric heater according to claim 7, characterized in that the body (10) further comprises:

a shield (18), the shield (18) filling a gap between the first tube (14) and the second tube (15), the first tube (14), the second tube (15), and the third tube (16) being wrapped in the shield (18).

9. The electric heater according to claim 1, characterized in that the body (10) is provided with an inlet channel (111) and an outlet channel (121), the inlet channel (111) communicating with the first containing chamber (11) and the outlet channel (121) communicating with the second containing chamber (12);

wherein liquid enters the body (10) through the inlet channel (111) and is discharged through the outlet channel (121).

10. The electric heater of claim 9, further comprising:

a first temperature measuring unit (40), wherein the first temperature measuring unit (40) is used for acquiring a temperature value of the first electric heating unit (20) or the second electric heating unit (30);

and the second temperature measuring part (50), wherein the second temperature measuring part (50) is used for acquiring the temperature value of the liquid discharged by the outlet channel (121).