CN217844330U

CN217844330U - Solar vacuum heat collecting tube and solar water heater

Info

Publication number: CN217844330U
Application number: CN202222025517.9U
Authority: CN
Inventors: 张怀良; 雷柏松; 宋雪峰
Original assignee: Samp Energy Technology Co ltd
Current assignee: Samp Energy Technology Co ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2022-11-18
Anticipated expiration: 2032-08-02

Abstract

The utility model discloses a solar vacuum heat collecting tube and solar water heater, it can avoid the connection of heat absorption fin and heat transfer tube core can appear becoming flexible or the connection is inefficacy, guarantees the collecting efficiency of solar vacuum heat collecting tube product. The utility model provides a solar energy evacuated collector tube, includes heat transfer tube core and heat absorption fin, the heat transfer tube core adopts the copper product to make, the heat absorption fin adopts the aluminium material to make, heat transfer tube core and heat absorption fin welding together set up a plurality of through-hole or logical groove of mutual interval along with heat transfer tube core looks welded position on the heat absorption fin, through-hole or logical groove run through the heat absorption fin in the thickness direction.

Description

Solar vacuum heat collecting tube and solar water heater

Technical Field

The utility model belongs to the technical field of solar water heater, specifically speaking relates to a solar vacuum heat collecting tube.

Background

The solar vacuum heat collecting tube is one of the components of a solar water heater, and is used for heating water by absorbing the heat of the sun. For example, chinese utility model patent publication No. CN201281474, published 2009, 07/29, discloses a glass-metal straight-through solar vacuum heat collecting tube, which comprises a glass shell, a heat transfer tube core, a metal fin plated with an absorption film, and a flange plate, wherein: the heat-transfer tube core is arranged in the middle of the glass shell, the metal sealing covers are arranged at two ends of the glass shell, one end of the heat-transfer tube core is directly connected with the first metal sealing cover, the other end of the heat-transfer tube core is connected with one end of the inner elastic expansion piece, the other end of the inner elastic expansion piece is connected with the inner end of the second metal sealing cover, and the outer end of the second metal sealing cover is connected with one end of the outer elastic expansion piece.

In the prior art, the mainstream product of a vacuum heat collecting tube manufacturer is to adopt a heat transfer tube core made of a copper material and a heat absorbing fin made of an aluminum material, and weld the heat transfer tube core and the heat absorbing fin together through connection modes such as ultrasonic welding, laser welding, cold welding and compression welding and the like. Because the two materials have different thermal expansion amounts, after the connection of the two parts reaches the fatigue limit after long-term use, the connection of the heat absorbing fin and the heat transfer tube core is loosened or failed, so that the heat collecting efficiency of the solar vacuum heat collecting tube product is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a solar vacuum heat collecting tube, it can avoid the connection of heat absorption fin and heat transfer tube core can appear becoming flexible or the connection inefficacy, guarantees the collecting efficiency of solar vacuum heat collecting tube product.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the utility model provides a solar energy evacuated collector tube, includes heat transfer tube core and heat absorption fin, the heat transfer tube core adopts the copper product to make, the heat absorption fin adopts the aluminium material to make, heat transfer tube core and heat absorption fin welding together set up a plurality of through-hole or logical groove of mutual interval along with heat transfer tube core looks welded position on the heat absorption fin, through-hole or logical groove run through the heat absorption fin in the thickness direction.

In addition to and as a preference for the above solution: the edge of the through hole or the through groove exceeds the edge of the weld crater.

On the basis of and as preferred above: the heat absorption fins are of flat sheet structures, and the heat transfer tube core is located in the middle of the heat absorption fins.

On the basis of and as preferred above: the heat absorption fins are circular tube sleeves, and the two heat transfer tube cores are symmetrically arranged on the inner sides of the heat absorption fins.

On the basis of and as preferred above: the heat absorbing fins are regular polygon pipe sleeves, and the two heat transfer pipe cores are symmetrically arranged on the inner sides of the heat absorbing fins.

On the basis of and as preferred above: the heat absorption fins are regular hexagon pipe sleeves.

The utility model also discloses a solar water heater, it includes foretell solar vacuum thermal-arrest pipe.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

the utility model discloses a solar vacuum heat collecting tube set up a plurality of logical groove or through-hole of mutual spaced along with heat transfer tube core welded position on the heat absorption fin, utilize by leading to groove or through-hole to give out the deformation space after being heated of heat absorption fin, borrow this to absorb the product and be heated the difference of back inflation volume with the heat transfer tube core at the heat absorption fin of different materials in the use, the connection of heat absorption fin and metal heat transfer tube core is avoided appearing not hard up or the connection is inefficacy, guarantee the collecting efficiency of solar vacuum heat collecting tube product.

Drawings

Fig. 1 is a schematic structural view of a solar vacuum heat collecting tube according to a first embodiment of the present invention.

Fig. 2 is a cross-sectional view of a solar vacuum heat collecting tube according to a first embodiment of the present invention.

Fig. 3 is a schematic structural view of a solar vacuum heat collecting tube according to a second embodiment of the present invention.

Fig. 4 is a cross-sectional view of a solar vacuum heat collecting tube according to a second embodiment of the present invention.

Fig. 5 is a schematic structural view of a solar vacuum heat collecting tube according to a third embodiment of the present invention.

Fig. 6 is a cross-sectional view of a solar vacuum heat collecting tube according to a third embodiment of the present invention.

In the figure, 1, a heat transfer tube core; 2. a heat absorbing fin; 3. a through groove.

Detailed Description

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person skilled in the art on the basis of the given examples without making any creative effort fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

In the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.

Example one

The embodiment discloses a solar vacuum heat collecting tube, which comprises a heat transfer tube core 1 and a heat absorption fin 2, wherein the heat transfer tube core 1 is made of copper materials, and the heat absorption layer sheet 2 is made of aluminum materials. The heat transfer tube core 1 and the heat absorbing fin 2 are welded together. In the present embodiment, the heat absorbing fin 2 is a flat plate structure, and the heat transfer tube core 1 is located in the middle of the heat absorbing fin 2. A plurality of through grooves 3 which are mutually spaced are arranged on the heat absorbing fins 2 along the positions welded with the heat transfer tube core 1, and the through grooves 3 penetrate through the heat absorbing fins 2 in the thickness direction. Generally, the through-groove 3 may employ a kidney-shaped hole.

In this embodiment, the edge of the through slot 3 extends beyond the edge of the crater. As shown in the drawing, the width of the through groove 3 in the up-down direction exceeds the position where the crater is located. In the present embodiment, the term width is a direction perpendicular to the length of the solar evacuated collector tube.

It should be noted that, in the present embodiment, the through slots 3 may be replaced by through holes.

According to the solar vacuum heat collecting tube, the heat absorbing fins 2 are provided with the plurality of through grooves 3 or the plurality of through holes which are mutually spaced along the welding positions with the heat transfer tube cores 1, the deformation space of the heat absorbing fins 2 after being heated is made available by the through grooves 3 or the through holes, the difference of the expansion amount of the heat absorbing fins 2 and the heat transfer tube cores 1 made of different materials in the using process of the product after being heated is absorbed, the connection of the heat absorbing fins 2 and the metal heat transfer tube cores 1 avoids loosening or connection failure, and the heat collecting efficiency of the solar vacuum heat collecting tube product is ensured.

Example two

Referring to fig. 3 and 4, the present embodiment discloses a solar vacuum heat collecting tube, and the differences between the present embodiment and the first embodiment of the solar vacuum heat collecting tube are as follows: in the embodiment, the heat absorbing fin 2 is a circular tube sleeve, and the two heat transfer tube cores 1 are symmetrically arranged on the inner side of the heat absorbing fin 2.

EXAMPLE III

The embodiment discloses a solar vacuum heat collecting tube, and the difference between the embodiment and the solar vacuum heat collecting tube in the first embodiment lies in that: the heat absorbing fins 2 are regular polygon pipe sleeves, and the two heat transfer pipe cores 1 are symmetrically arranged on the inner sides of the heat absorbing fins 2. As shown in the figure, the heat absorbing fin 2 is a regular hexagonal pipe sleeve. Of course, a regular octagonal tube sleeve may also be selected.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model should be covered within the protection scope of the utility model.

Claims

1. The utility model provides a solar energy evacuated collector tube, includes heat transfer tube core and heat absorption fin, the heat transfer tube core adopts the copper material to make, the heat absorption fin adopts the aluminium material to make, heat transfer tube core and heat absorption fin welding together which characterized in that: and a plurality of through holes or through grooves which are mutually spaced are arranged on the heat absorbing fins along the welding position with the heat transfer pipe core, and the through holes or the through grooves penetrate through the heat absorbing fins in the thickness direction.

2. The solar vacuum heat collecting tube of claim 1, wherein: the edge of the through hole or the through groove exceeds the edge of the crater.

3. The solar vacuum heat collecting tube of claim 1 or 2, wherein: the heat absorption fins are of flat sheet structures, and the heat transfer tube core is located in the middle of the heat absorption fins.

4. The solar vacuum heat collecting tube of claim 1 or 2, wherein: the heat absorption fins are circular tube sleeves, and the two heat transfer tube cores are symmetrically arranged on the inner sides of the heat absorption fins.

5. The solar vacuum heat collecting tube of claim 1 or 2, wherein: the heat absorbing fins are regular polygon pipe sleeves, and the two heat transfer pipe cores are symmetrically arranged on the inner sides of the heat absorbing fins.

6. The solar vacuum heat collecting tube of claim 5, wherein: the heat absorption fins are regular hexagon pipe sleeves.

7. A solar water heater is characterized in that: comprising the solar evacuated collector tube according to any one of claims 1 to 6.