CN210486124U

CN210486124U - Solar vacuum tube with heat storage and thawing functions for solar water heater

Info

Publication number: CN210486124U
Application number: CN201921529937.2U
Authority: CN
Inventors: 王巍巍
Original assignee: Lanzhou Jiaotong University
Current assignee: Lanzhou Jiaotong University
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-05-08
Anticipated expiration: 2029-09-16

Abstract

The utility model relates to a vacuum tube technical field specifically is a solar vacuum tube with function that unfreezes that has heat accumulation for solar water heater, including the outer tube, outer tube and interior tubular vacuum layer that becomes, the lower extreme outer wall integrated into one piece of inner tube has the glass cavity, and it has phase change material to annotate in the glass cavity, through the lower extreme outer wall integrated into one piece glass cavity at the inner tube, pours phase change material into in the glass cavity, makes phase change material carry out the heat accumulation, avoids the vacuum tube to freeze, sets up the collection light cover through the outer wall at the outer tube to improve solar photothermal utilization efficiency, thereby dissolve fast and freeze, the utility model relates to a rationally, it is convenient to use, has the phase change heat accumulation function, avoids the vacuum tube to freeze, and improves solar photothermal utilization efficiency through.

Description

Solar vacuum tube with heat storage and thawing functions for solar water heater

Technical Field

The utility model relates to a vacuum tube technical field specifically is a solar vacuum tube with heat accumulation function of unfreezing for solar water heater.

Background

The solar water heater is a heating device which converts solar energy into heat energy, heats water from low temperature to high temperature so as to meet the requirement of hot water use of people in life and production, carries out photo-thermal conversion through a solar vacuum tube, and the existing solar vacuum tube can freeze and is not easy to melt accumulated water in the vacuum tube when the temperature is lower in winter, therefore, the utility model is provided in particular.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a hydraulic engineering technical field specifically is a solar energy vacuum tube with heat accumulation function of unfreezing for solar water heater.

In order to realize the purpose of the utility model, the embodiment of the utility model provides a following technical scheme:

the utility model provides a solar vacuum tube with function is unfreezed in heat accumulation for solar water heater, includes the outer tube, the left end inner wall fixedly connected with inner tube of outer tube, and outer tube and inner tube formation vacuum layer, the outer wall of inner tube is equipped with the selectivity absorption coating, the lower extreme outer wall integrated into one piece of inner tube has the glass cavity, it has phase change material to annotate in the glass cavity, the slot has been seted up to the outer wall of outer tube, the inner wall of slot is pegged graft and is had the light collecting cover, the light collecting cover includes the arc, the inner wall of arc is provided with reflection of light coating, the equal fixedly connected with side seal board of left end inner wall and the right-hand member inner wall of arc, the fixedly connected with picture peg of the upper surface of arc and side seal board, and.

Furthermore, for better realization the utility model discloses, seal through sealed glue between collection light cover and the outer tube, make collection light cover and outer tube produce greenhouse effect.

Furthermore, for better realization the utility model discloses, the picture peg is made by the glass material, and the side seal board is made by the elastic rubber material.

Furthermore, for better realization the utility model discloses, selective absorbing coating includes antireflection layer, absorbed layer and infrared reflection layer, and antireflection layer, absorbed layer and infrared reflection layer by interior outside in proper order even scribble the outer wall at the inner tube.

Furthermore, for better realization the utility model discloses, the right-hand member inner wall on vacuum layer is provided with spring clip and getter, and spring clip's inner wall supports the right-hand member of inner tube.

Further, for better implementation of the present invention, the pressure of the vacuum layer is 0.05pa to reduce the heat loss due to air convection and conduction.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a solar vacuum tube that solar water heater was with function of unfreezing that has heat accumulation, through the lower extreme outer wall integrated into one piece glass cavity at the inner tube, pours phase change material into in the glass cavity, makes phase change material carry out the heat accumulation, avoids the vacuum tube to freeze, sets up the collection light cover through the outer wall at the outer tube to improve solar photothermal utilization efficiency, thereby dissolve fast and freeze.

The utility model relates to a rationally, it is convenient to use, has the phase transition heat accumulation function, avoids the vacuum tube to freeze, and improves solar photothermal utilization efficiency through the light-collecting cover to unfreeze fast.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a right sectional view of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

the utility model is realized by the following technical scheme, as shown in figure 1-2, a solar vacuum tube with heat storage thawing function for a solar water heater, which comprises an outer tube 1, an inner tube 2 is fixedly connected with the inner wall of the left end of the outer tube 1, the outer tube 1 and the inner tube 2 adopt the design of single-end opening, the outer tube 1 and the inner tube 2 are annularly sealed by melting through one end, the other end is a sealed hemispherical round head, the outer tube 1 and the inner tube 2 form a vacuum layer 9, fins 8 are fixedly connected with the inner wall of the inner tube (2) to improve the heat conduction efficiency, the outer wall of the inner tube 2 is provided with a selective absorption coating 3, a glass cavity 4 is integrally formed on the outer wall of the lower end of the inner tube 2, a phase-change material 5 is injected into the glass cavity 4, the phase-change material 5 is a doped nano-alumina phase-change material, the material is, slot 6 has been seted up to the outer wall of outer tube 1, the inner wall of slot 6 is pegged graft and is had light collecting cover 7, light collecting cover 7 includes arc 71, the inner wall of arc 71 is provided with reflective coating 72, arc 71 structure is as illustrated in description figure 1, it is the ya keli material, and with the coaxial setting of outer tube 1, reflection sunshine, improve the light and heat efficiency of vacuum tube, the equal fixedly connected with side seal board 73 of left end inner wall and the right-hand member inner wall of arc 71, the fixedly connected with picture peg 74 of the upper surface of arc 71 and side seal board 73, and the inner outer wall of picture peg 74 is pegged graft mutually with slot 6's inner wall.

Specifically, the light collecting cover 7 and the outer tube 1 are sealed by a sealant, so that the light collecting cover 7 and the outer tube 1 generate a greenhouse effect, thereby preserving heat of the lower portion of the outer tube 1 while achieving the photothermal efficiency of the vacuum tube.

Specifically, the insert plate 74 is made of a glass material, and the side sealing plates 73 are made of an elastic rubber material, thereby facilitating bending and assembly.

Specifically, the selective absorption coating 3 includes an antireflection layer, an absorption layer, and an infrared reflection layer, and the antireflection layer, the absorption layer, and the infrared reflection layer are uniformly coated on the outer wall of the inner tube 2 in this order from the inside to the outside.

Specifically, the inner wall of the right end of the vacuum layer 9 is provided with a spring clip 10 and a getter 11, the spring clip 10 and the getter 11 are conventional technical means, the inner wall of the spring clip 10 supports the right end of the inner tube 2, and the getter 11 maintains high vacuum property.

Specifically, the pressure of the vacuum layer 9 is 0.05pa to reduce heat loss due to air convection and conduction.

The working principle is as follows: when the utility model discloses when using, inner tube 2 is as the mobile pipe of water, and the selective absorbing coating 3 of the 2 outer walls of inner tube absorbs solar radiation energy, and the change is heat energy, and water in the heating pipeline, when inner tube 2 temperature was lower winter, phase change material 5 was exothermic to avoid freezing, reflection of light coating 72 reflection sunshine simultaneously improves the light and heat efficiency of vacuum tube, makes the vacuum tube unfreeze fast, the utility model relates to a rationally, it is convenient to use, has the phase transition heat accumulation function, avoids the vacuum tube to freeze, and improves solar photothermal utilization efficiency through the light-collecting cover, thereby unfreezes fast, consequently, has stronger practicality.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a solar vacuum tube with heat accumulation function of unfreezing for solar water heater, includes outer tube (1), its characterized in that: the vacuum tube is characterized in that an inner tube (2) is fixedly connected to the inner wall of the left end of the outer tube (1), a vacuum layer (9) is formed between the outer tube (1) and the inner tube (2), the inner wall of the inner tube (2) is fixedly connected with fins (8), the outer wall of the inner tube (2) is provided with a selective absorption coating (3), a glass cavity (4) is formed in the outer wall of the lower end of the inner tube (2), a phase-change material (5) is injected into the glass cavity (4), a slot (6) is formed in the outer wall of the outer tube (1), a light collecting cover (7) is inserted into the inner wall of the slot (6), the light collecting cover (7) comprises an arc-shaped plate (71), a light reflecting coating (72) is arranged on the inner wall of the arc-shaped plate (71), a side sealing plate (73) is fixedly connected to the inner wall of the left end and the inner wall of the right end of the arc-, and the outer wall of the inner end of the plug board (74) is inserted with the inner wall of the slot (6).

2. The solar vacuum tube with the function of heat storage and thawing for the solar water heater according to claim 1, characterized in that: the light collecting cover (7) and the outer pipe (1) are sealed through a sealant, so that the light collecting cover (7) and the outer pipe (1) generate a greenhouse effect.

3. The solar vacuum tube with the function of heat storage and thawing for the solar water heater according to claim 1, characterized in that: the insert plate (74) is made of glass materials, and the side sealing plate (73) is made of elastic rubber materials.

4. The solar vacuum tube with the function of heat storage and thawing for the solar water heater according to claim 1, characterized in that: the selective absorbing coating (3) comprises an antireflection layer, an absorbing layer and an infrared reflecting layer, and the antireflection layer, the absorbing layer and the infrared reflecting layer are uniformly coated on the outer wall of the inner tube (2) from inside to outside in sequence.

5. The solar vacuum tube with the function of heat storage and thawing for the solar water heater according to claim 1, characterized in that: the inner wall of the right end of the vacuum layer (9) is provided with a spring clip (10) and a getter (11), and the inner wall of the spring clip (10) supports the right end of the inner tube (2).

6. The solar vacuum tube with the function of heat storage and thawing for the solar water heater according to claim 1, characterized in that: the vacuum layer (9) has a pressure of 0.05pa to reduce heat loss due to air convection and conduction.