CN210602434U

CN210602434U - Heater for refrigerator

Info

Publication number: CN210602434U
Application number: CN201921375842.XU
Authority: CN
Inventors: 佘宏广; 石杰毅; 阮红星; 范文甫; 彭浩; 徐陈华; 张道胜; 屈万清
Original assignee: Anhui Ningguo Tiancheng Electric Machine Co ltd
Current assignee: Anhui Ningguo Tiancheng Electric Machine Co ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-05-22
Anticipated expiration: 2029-08-22

Abstract

The utility model provides a heater for a refrigerator, which comprises an inner pipe, an outer pipe, a first sealing plug, a second sealing plug and an electric heating wire, wherein the outer pipe is sleeved outside the inner pipe; the first sealing plug and the second sealing plug are respectively arranged at two ends of the outer pipe and are hermetically connected with the outer pipe, two ends of the inner pipe are respectively abutted against the first sealing plug and the second sealing plug, the first sealing plug is provided with a first air duct for communicating the first cavity with the second cavity, and the second sealing plug is provided with a second air duct for communicating the first cavity with the second cavity; one end of the electric heating wire penetrates through the first sealing plug, extends into the outer pipe, is spirally wound on the inner pipe, and then penetrates through the second sealing plug and extends out of the inner pipe. The utility model discloses set up first cavity in the inner tube, the outer tube sets up the second cavity to set up first ventiduct, the second ventiduct of first cavity and second cavity respectively in first sealing plug, second sealing plug, make the inside air current runner of heater, make the temperature even.

Description

Heater for refrigerator

Technical Field

The utility model relates to a heater technical field especially relates to a heater for refrigerator.

Background

When the evaporator of the refrigerator or the cold storage warehouse works in a refrigerating mode, a layer of frost is condensed on the surface of the evaporator, evaporation and heat absorption are affected when the frost is thick, defrosting is needed, and most of evaporators of the refrigerator or the cold storage warehouse with large refrigerating capacity are defrosted by electric heaters. The stainless steel pipe of the existing electric heater has good heat-conducting property, and can rapidly transmit heat generated by the heating wire to the outside, however, the heat generated by the heating wire has certain temperature difference within the length range, so that the temperature on the stainless steel pipe also has temperature difference, when frost on the evaporator meets different heating temperatures, the evaporator is affected by the temperature difference, and the evaporator is damaged due to internal temperature stress.

SUMMERY OF THE UTILITY MODEL

Based on the technical problem who exists among the background art, the utility model provides a heater for refrigerator.

The utility model provides a heater for a refrigerator, which comprises an inner pipe, an outer pipe, a first sealing plug, a second sealing plug and an electric heating wire, wherein the outer pipe is sleeved outside the inner pipe; the first sealing plug and the second sealing plug are respectively arranged at two ends of the outer pipe and are hermetically connected with the outer pipe, two ends of the inner pipe are respectively abutted against the first sealing plug and the second sealing plug, the first sealing plug is provided with a first air duct for communicating the first cavity with the second cavity, and the second sealing plug is provided with a second air duct for communicating the first cavity with the second cavity; one end of the electric heating wire penetrates through the first sealing plug, extends into the outer pipe, is spirally wound on the inner pipe, and then penetrates through the second sealing plug and extends out of the inner pipe.

Preferably, one end of the first cavity close to the first sealing plug is provided with a first fan which blows airflow into the first air duct.

Preferably, one end of the first cavity close to the second sealing plug is provided with a second fan which blows airflow into the hollow cavity.

Preferably, the heating wire is spirally wound at equal intervals outside the inner tube.

Preferably, the first sealing plug and the second sealing plug are respectively provided with a first sealing groove and a second sealing groove for inserting the inner pipe.

Preferably, the second cavity is a spiral cavity, and the spiral axis of the second cavity coincides with the central axis of the inner tube.

Preferably, the first sealing plug is matched with the outer pipe and the inner pipe in an inserting mode.

Preferably, the second sealing plug is matched with the outer pipe and the inner pipe in an inserting mode.

The utility model provides a heater for refrigerator, the heater strip is arranged between the inner tube and the outer tube and spirally wound on the outer wall of the inner tube, so that heat can be transferred outwards more quickly, and the heating performance is improved; the inner pipe is internally provided with a first cavity, the outer pipe is provided with a second cavity, and a first ventilation channel and a second ventilation channel of the first cavity and the second cavity are respectively arranged in the first sealing plug and the second sealing plug, so that an airflow channel inside the heater is uniform in temperature, and the temperature difference is avoided.

Drawings

Fig. 1 is a schematic structural view of a heater for a refrigerator according to the present invention;

fig. 2 is a schematic view of a local structure of a heater for a refrigerator according to the present invention.

Detailed Description

Referring to fig. 1 and 2, the utility model provides a heater for refrigerator, including inner tube 1, outer tube 2, first sealing plug 3, second sealing plug 4 and electric heating wire 5, wherein:

the outer tube 2 suit is outside inner tube 1, and inner tube 1 is equipped with first cavity 6, and outer tube 2 is equipped with second cavity 7.

First sealing plug 3, second sealing plug 4 sets up respectively at 2 both ends of outer tube and all with 2 sealing connection of outer tube, 1 both ends of inner tube respectively with first sealing plug 3, second sealing plug 4 supports and leans on, first sealing plug 3 is equipped with the first ventiduct 8 of the first cavity 6 of intercommunication and second cavity 7, second sealing plug 4 is equipped with the first cavity 6 of intercommunication, the second ventiduct 9 of second cavity 7, first sealing plug 3 and outer tube 2, the cooperation of all pegging graft of inner tube 1, second sealing plug 4 and outer tube 2, the cooperation of all pegging graft of inner tube 1.

One end of the electric heating wire 5 penetrates through the first sealing plug 3, extends into the outer pipe 2, is spirally wound on the inner pipe 1 at equal intervals, and then penetrates through the second sealing plug 4 to extend out of the inner pipe.

The heating wire 5 of the utility model is arranged between the inner tube 1 and the outer tube 2 and is spirally wound on the outer wall of the inner tube 1, so that heat can be transferred outwards more quickly, and the heating performance is improved; set up first cavity 6 in the inner tube 1, outer tube 2 sets up second cavity 7 to set up first ventiduct 8, the second ventiduct 9 of first cavity 6 and second cavity 7 respectively in first sealing plug 3, second sealing plug 4, make the inside air current runner of heater, make the temperature even, avoid appearing the difference in temperature.

In this embodiment, in order to improve the heat transfer uniformity of the refrigerator heater, a first blower 10 for blowing air flow into the first air duct 8 is disposed at one end of the first cavity 6 close to the first sealing plug 3. The first cavity 6 is provided with a second fan 11 which blows air flow into the cavity at one end close to the second sealing plug 4. Because the winding of heater strip 5 is outside at inner tube 1, the temperature is higher in the inner tube 1, and through setting up first fan 10, second fan 11, first fan 10, the inside air current of second fan 11 start-up guide flow for the inside temperature of heater is even.

In this embodiment, in order to improve the sealing performance, a first sealing groove and a second sealing groove into which the inner tube 1 is inserted are respectively disposed inside the first sealing plug 3 and the second sealing plug 4.

In this embodiment, in order to improve the heating performance of the refrigerator heater, the second cavity 7 is preferably a spiral cavity, and the spiral axis of the second cavity 7 coincides with the central axis of the inner tube 1.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A heater for a refrigerator is characterized by comprising an inner pipe (1), an outer pipe (2), a first sealing plug (3), a second sealing plug (4) and an electric heating wire (5), wherein the outer pipe (2) is sleeved outside the inner pipe (1), the inner pipe (1) is provided with a first cavity (6), and the outer pipe (2) is provided with a second cavity (7); the first sealing plug (3) and the second sealing plug (4) are respectively arranged at two ends of the outer pipe (2) and are both in sealing connection with the outer pipe (2), two ends of the inner pipe (1) are respectively abutted against the first sealing plug (3) and the second sealing plug (4), the first sealing plug (3) is provided with a first ventilation channel (8) for communicating the first cavity (6) with the second cavity (7), and the second sealing plug (4) is provided with a second ventilation channel (9) for communicating the first cavity (6) with the second cavity (7); one end of the electric heating wire (5) penetrates through the first sealing plug (3) to stretch into the outer pipe (2), spirally winds the inner pipe (1) and then penetrates through the second sealing plug (4) to stretch out of the inner pipe.

2. A heater for a refrigerator according to claim 1, wherein the first cavity (6) is provided with a first fan (10) at an end thereof adjacent to the first sealing plug (3) for blowing air into the first air path (8).

3. A heater for a refrigerator according to claim 2, characterised in that the first cavity (6) is provided with a second fan (11) at an end thereof adjacent the second sealing plug (4) for blowing air into the cavity.

4. The heater for a refrigerator according to any one of claims 1 to 3, wherein the heating wire (5) is spirally wound at equal intervals outside the inner tube (1).

5. A heater for a refrigerator according to any one of claims 1 to 3, wherein a first sealing groove and a second sealing groove for inserting the inner tube (1) are formed inside the first sealing plug (3) and the second sealing plug (4), respectively.

6. A heater for a refrigerator according to any one of claims 1-3, wherein the second cavity (7) is a spiral cavity, and the spiral axis of the second cavity (7) coincides with the central axis of the inner tube (1).

7. A heater for a refrigerator according to any one of claims 1-3, wherein the first sealing plug (3) is fitted in an insertion manner to both the outer tube (2) and the inner tube (1).

8. A heater for a refrigerator according to any one of claims 1-3, wherein the second sealing plug (4) is fitted in an insertion manner to both the outer tube (2) and the inner tube (1).