CN201628403U - A split type solar water heater - Google Patents

Abstract

A split solar water heater, comprising a solar thermal collector, a pressurized water tank, a heat transfer connecting pipe, a heat pipe and a heat exchange box, the solar thermal collector is filled with a heat conducting medium, and the solar thermal collector passes through the heat transfer connecting pipe Connected with the heat exchange box, the radiating section of the heat pipe is located in the pressurized water tank, the heat absorbing section is located in the heat exchange box, and a number of radiating fins are arranged on the outside of the radiating section of the heat pipe, and the fins are parallel to each other and vertical on the central axis of the heat pipe. The utility model improves the structure of the solar water heater and solves the disadvantage of high heat loss of the split solar water heater. The split solar water heater provided by the utility model has the advantages of rapid heat transfer with the smallest heat loss, strong water delivery power, and high heat exchange efficiency. The advantages of easy and flexible installation and cost economy.

Description

A split type solar water heater

technical field

The utility model relates to a solar water heater, in particular to a split type pressurized solar water heater, which belongs to the technical field of water heaters.

Background technique

At present, the solar water heater industry is developing at a rapid speed, and has formed a momentum of being divided into three parts of the world with electric water heaters and gas water heaters. At the same time, with the continuous improvement of people's living standards, solar water heaters are developing from an integrated structure of a heat collector and a water storage tank to a more high-grade, comfortable and beautiful solar heat collector and a separate structure of a water storage tank.

The split type solar water heater can place the heat collector and the water tank separately, so the volume and weight of the heat collector are small, and it can be installed on the wall or on the balcony like the outdoor unit of the split air conditioner, thus meeting the needs of most users. need. However, due to the long connecting pipeline of this kind of split solar water heater, the heat loss in the circulation process is relatively large, especially in the northern region, due to the large heat loss, the water temperature is difficult to reach the required temperature, and it is often necessary to use an electric heating device for auxiliary heating. It needs to consume a large amount of electric energy, and the original purpose of using solar water heaters to save energy cannot be achieved. In addition, due to the low temperature in the northern region, the running water in the connecting pipeline is easy to freeze, which also affects the performance of the solar water heater.

Now, the water storage tank of solar water heater has developed from the earliest natural circulation type to the pressure-bearing type. Since the water tank is fully pressurized, it overcomes the shortcomings of insufficient power for non-pressurized water supply, and it does not explode, freeze or crack, and does not leak water, and its thermal efficiency and functions are greatly improved. But the water tank of this water heater is directly connected with the vacuum heat collecting tube through the heat pipe, so it must be installed together, and the separation of heat collecting and hot water supply cannot be realized. Not only the installation is not flexible enough, but also it is inconvenient to popularize and apply. For example, it is difficult for the downstairs residents with less sunshine hours to use; for another example, the residences with bathrooms facing north cannot use them either. Therefore, it has not been practically applied so far.

Contents of the invention

The purpose of the utility model is to overcome the shortcomings of the prior art, overcome the deficiencies of the above-mentioned prior art, improve the structure of the solar water heater, solve the shortcoming of the high heat loss of the split solar water heater, and provide a rapid transmission with the minimum heat loss. A split-type solar water heater with strong heat and water delivery power, high heat exchange efficiency, easy and flexible installation, and low cost.

In order to achieve the above object, the utility model adopts the following technical solutions to realize:

A split solar water heater, comprising a solar thermal collector, a pressurized water tank, a heat transfer connecting pipe, a heat pipe and a heat exchange box, the solar thermal collector is filled with a heat-conducting medium, and the solar thermal collector passes through the heat transfer connecting pipe Connected with the heat exchange box, the radiating section of the heat pipe is located in the pressurized water tank, the heat absorbing section of the heat pipe is located in the heat exchange box, and a number of radiating fins are arranged outside the radiating section of the heat pipe, and the fins parallel to each other and perpendicular to the central axis of the heat pipe.

As a further improvement of the utility model, the inlet of the solar heat collector is connected to the inlet of the heat exchange box through the heat transfer connecting pipe, and the outlet of the solar heat collector is connected to the outlet of the heat exchange box through the heat transfer connecting pipe. Connection, the solar heat collector forms a circulation loop through the heat transfer connecting pipe and the heat exchange box.

As a further improvement of the utility model, the solar heat collecting device is composed of a heat collector and a junction box, and the heat collector communicates with the junction box. The upper and lower ends of the junction box are respectively provided with an upper outlet and a lower inlet. The heat collector is a vacuum tube heat collector or a flat plate heat collector.

As a further improvement of the utility model, the bottom of the heat exchange box is provided with an inlet and an outlet; one end of the heat transfer connection pipe and the heat transfer connection pipe are respectively connected to the upper outlet and the lower inlet of the connection box, and the outlet The other end of the heat transfer connecting pipe and the inlet heat transfer connecting pipe are respectively connected with the inlet and the outlet at the bottom of the heat exchange box to form a circulation loop.

The heat pipe is a superconducting heat pipe.

The heat transfer connecting pipe is a gravity heat pipe.

The heat conduction medium is an antifreeze heat conduction medium.

Alternatively, the heat transfer medium is heat transfer oil.

An electric heater is also arranged in the pressurized water tank.

The fins are made of copper or aluminum.

Obviously, the utility model has the following advantages:

1. Flexible and convenient installation, easy to popularize and apply;

2. The part of the heat pipe in the water tank is equipped with cooling ribs to accelerate heat exchange

3. Only a small number of heat pipes are needed, and the cost is very economical;

4. High heat exchange efficiency, strong water supply power, ideal use effect;

5. There is no water in the vacuum tube, so as to better solve the problem of antifreeze in cold areas and save electricity;

5. Use antifreeze heat conduction medium, which has antifreeze effect and is not limited in the area of use.

Description of drawings

Fig. 1 is the structural representation of the utility model split type solar water heater;

Fig. 2 is a schematic structural view of a preferred embodiment of the split solar water heater of the present invention;

Fig. 3 is the enlarged schematic diagram of the heat pipe of the I part shown in Embodiment 1 of the utility model.

The accompanying drawings are marked as follows: 1. Solar heat collection device; 2. Pressurized water tank; 3. Heat exchange box; 4. Gravity heat pipe; 5. Heat pipe; 6. Fins; 7. Connection box; 11. The first group Vacuum tube; 12, the second group of vacuum tubes; 21, water inlet pipe; 22, water outlet pipe; 23, sewage pipe; 24, T/P safety valve; 25, high temperature/high pressure drain pipe; 31, heat exchange box inlet; 32, heat Exit of exchange box; 41, inlet of gravity heat pipe; 42, outlet of gravity heat pipe; 71, upper outlet of connection box; 72, lower inlet of connection box; 81, controller; 82, electric heater; 83, temperature probe.

Detailed ways

The specific implementation of the utility model will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

As shown in Figure 1, in the structural schematic diagram of the split solar water heater of the present invention, the pressurized water tank 2 and the solar heat collector 1 are separately arranged, the heat exchange box 3 is installed on the outer wall of the bottom of the pressurized water tank 2, and the heat-conducting medium passes through gravity. The heat pipe 4 circulates between the heat exchange box 3 and the solar thermal collector 1 . Simultaneously, the split type solar water heater adopts a microcomputer full intelligent control mode to operate through the controller 81.

Heat pipe 5 vertically passes through the top of heat exchange box 3 and the bottom of pressurized water tank 2, and the heat dissipation section (ie condensation section) and heat absorption section of heat pipe 5 are located in heat exchange box 3 and in pressurized water tank 2 respectively.

A plurality of heat dissipation fins 6 are arranged on the outside of the heat dissipation section of the heat pipe 5 , and the fins 6 are parallel to each other and perpendicular to the central axis of the heat pipe 5 .

The pressurized water tank 2 can be installed on the attic, balcony, bathroom or floor, and the solar thermal collector 1 can be installed on the flat roof, the sloped roof or hang on the outer wall, or as a balcony guardrail. The pressurized water tank 2 is provided with a water inlet pipe 21 , a water outlet pipe 22 and a sewage discharge pipe 23 , and a controller 81 is electrically connected with an electric heater 82 and a temperature probe 83 .

The heat energy collected by the solar heat collector 1 heats the heat transfer medium, and quickly flows into the heat exchange box 3, and the heat transfer medium flowing into the heat exchange box 3 transfers heat to a section of the heat pipe 5 located in the heat exchange box 3, and its temperature drops again. Flow back to the solar heat collection device 1, and the heat transfer medium flowing back to the solar heat collection device 1 flows into the heat exchange box 3 again, thus forming a circular flow; the heat pipe 5 is located in the heat exchange box 3. After the heat, it quickly evaporates into a gaseous state and rises to the other section of the heat pipe 5 located in the pressurized water tank 2. After the gaseous medium transfers heat to the water in the pressurized water tank 2 through the heat pipe wall, it is condensed again into a liquid medium and borrowed Capillary force flows back to a section of the heat pipe 5 located in the heat exchange box 3 . The heat dissipation fins 6 arranged on the outside of the heat dissipation section of the heat pipe 5 can accelerate the transfer of heat to the water in the pressurized water tank 2 .

When the temperature of the water in the pressurized water tank 2 is not enough, the controller 81 can start the electric heater 82 to realize electric heating.

As shown in Figure 2, in the schematic diagram of the preferred embodiment of the utility model split solar water heater, the pressurized water tank 2 and the solar heat collector 1 are separately arranged, and the heat exchange box 3 is installed on the outer wall of the bottom of the pressurized water tank 2 .

The pressurized water tank 2 is provided with a water inlet pipe 21 , a water outlet pipe 22 and a sewage discharge pipe 23 . A T/P safety valve 24 and a high temperature/high pressure drain pipe 25 are also provided on the top of the pressurized water tank 2 . The controller 81 is electrically connected with the electric heater 82 and the temperature probe 83 .

The solar heat collection device can be composed of vacuum tube collectors, which are composed of 12-23 cylindrical vacuum tubes arranged in the same direction; they can also be composed of flat plate collectors, which are composed of 8-10 tubes with copper or aluminum The blades are made of ultra-thin vacuum tubes. The flat plate collector is equipped with a glass outer plate, a glass inner plate inside, a stainless steel top plate on the top, and glass side plates on both sides.

In this embodiment, the solar heat collecting device 1 is composed of two sets of horizontal vacuum tubes 11 , 12 and a connection box 13 arranged therein, and the connection box 13 connects the two sets of vacuum tubes 11 , 12 . The upper and lower ends of the junction box 7 are respectively provided with an upper outlet 71 and a lower inlet 72 . The bottom of the heat exchange box 3 is provided with an inlet 31 and an outlet 32 . One end of the inlet gravity heat pipe 41 and the outlet gravity heat pipe 42 is respectively connected with the inlet 31 and the outlet 32 of the heat exchange box 3, and the other end of the inlet gravity heat pipe 41 and the outlet gravity heat pipe 42 is respectively connected with the upper outlet 71 and the lower inlet 72 of the junction box 7. connected to form a loop.

In this embodiment, the heat-conducting medium is an antifreeze heat-conducting medium, but the heat-conducting medium used in the present invention is not limited thereto, and other heat-conducting mediums, such as heat-transfer oil, can also be used.

Heat pipe 5 vertically passes through the top of heat exchange box 3 and the bottom of pressurized water tank 2, and the heat dissipation section (ie condensation section) and heat absorption section of heat pipe 5 are located in heat exchange box 3 and in pressurized water tank 2 respectively. A plurality of heat dissipation fins 6 are arranged on the outside of the heat dissipation section of the heat pipe 5 , and the fins 6 are parallel to each other and perpendicular to the central axis of the heat pipe 5 . The number of heat pipes 5 is preferably 8-14.

In two groups of vacuum tubes 11, 12, the junction box 7, the gravity heat pipe 41, the gravity heat pipe 42 and the heat exchange box 3 are filled with antifreeze.

During use, the two groups of vacuum tubes 11 and 12 placed outdoors absorb light and heat to heat up the antifreeze inside, which causes the antifreeze in the two groups of vacuum tubes 11 and 12 to be separated from the antifreeze in the heat exchange box 3 placed indoors. The liquid produces a temperature difference, thereby promoting the flow of antifreeze between the two sets of vacuum tubes 11, 12 and the heat exchange box 3; The gravity heat pipe 41 flows into the heat exchange box 3, and the lower antifreeze liquid in the heat exchange box 3 flows back to the two groups of vacuum tubes 11 and 12 along the gravity heat pipe 42 to be heated; After being transferred to a section of the heat pipe 5 located in the gravity heat pipe 42, its temperature drops and flows back into the connection box 7, and the heated antifreeze fluid flowing back into the two sets of vacuum pipes 11 and 12 flows into the gravity heat pipe 42 again. In this way, the circulation flow is formed; the liquid medium in the section of the heat pipe 5 located in the heat exchange tank 3 receives the heat from the hot antifreeze, and quickly evaporates into a gaseous state and rises to the other section of the heat pipe 5 located in the pressurized water tank 2. The gaseous medium After the heat is transferred to the water in the pressurized water tank 2 through the tube wall of the heat pipe, it is recondensed into a liquid medium and flows back to a section of the heat pipe 5 located in the heat exchange box 3 by capillary force. A plurality of parallel heat dissipation fins 6 arranged outside the heat dissipation section of the heat pipe 5 are perpendicular to the central axis of the heat pipe 5, thereby effectively increasing the heat dissipation area and making the heat transfer efficiency of the heat pipe 5 higher. When the temperature of the water in the pressurized water tank 2 is not enough, the controller 81 can start the electric heater 82 to realize electric heating.

As shown in Figure 3, the exterior of the heat dissipation section of the heat pipe 5 is provided with several mutually parallel heat dissipation fins 6, and these fins 6 are perpendicular to the central axis of the heat pipe 5, thereby effectively increasing the heat dissipation area and making the heat dissipation of the heat pipe 5 Higher thermal efficiency. The material of the fins is preferably a metal with good thermal conductivity, such as copper or aluminum.

In the utility model, a pressure-bearing water tank is adopted, with electric heating inside, which can ensure all-weather hot water supply. Electric heating dry.

In the utility model, the gravity heat pipe is vertically arranged in the heat exchange tank and the pressurized water tank, which avoids the inconvenience caused by the long distance, many turns and horizontal sections of the existing split solar water heater heat pipe. Effective and rapid transmission of the medium in the heat pipe can give full play to the conduction heat exchange efficiency of the gravity heat pipe.

In the utility model, the heat dissipation fins are adopted to effectively increase the heat dissipation area, so that the heat transfer efficiency of the heat pipe is higher.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the structure of the present utility model in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model still belong to the scope of the technical solution of the present utility model.

Claims (10)

1. separated type solar water heater, comprise solar energy heat collector, press-bearing water tank, heat transfer tube connector and heat pipe, it is characterized in that, also comprise heat exchange case, described solar energy heat collector is filled with heat-conducting medium, described solar energy heat collector is connected with heat exchange case by the heat transfer tube connector, the radiating segment of described heat pipe is positioned at press-bearing water tank, the endotherm section of described heat pipe is positioned at heat exchange case, the outside of the radiating segment of described heat pipe is provided with some radiated ribs, and described fin is parallel to each other and perpendicular to the central shaft of described heat pipe.

2. separated type solar water heater according to claim 1, it is characterized in that, the import of described solar energy heat collector is connected with the import of heat exchange case by the tube connector that advances to conduct heat, the outlet of described solar energy heat collector is connected with the outlet of heat exchange case by the tube connector that goes out to conduct heat, and solar energy heat collector constitutes closed circuit by heat transfer tube connector and heat exchange case.

3. separated type solar water heater according to claim 2, it is characterized in that, described solar energy heat collector is made up of heat collector and fishing box, heat collector and fishing box UNICOM, the upper and lower end of described fishing box has upper outlet and lower inlet, and described heat collector is vacuum tube collector or flat plate collector.

4. separated type solar water heater according to claim 3 is characterized in that, described heat exchange case bottom has import and outlet; The end of the tube connector and the tube connector that advances to conduct heat of going out to conduct heat is connected with lower inlet with the upper outlet of described fishing box respectively, and the other end of go out the to conduct heat tube connector and the tube connector that advances to conduct heat is connected the formation closed circuit with the import and the outlet of described heat exchange case bottom respectively.

5. separated type solar water heater according to claim 4 is characterized in that described heat pipe is a super heat-conductive pipe.

6. separated type solar water heater according to claim 5 is characterized in that, described heat transfer tube connector is a gravity assisted heat pipe.

7. separated type solar water heater according to claim 6 is characterized in that, described heat-conducting medium is antifreeze heat-conducting medium.

8. separated type solar water heater according to claim 6 is characterized in that described heat-conducting medium is a heat-transfer oil.

9. according to each described separated type solar water heater of claim 1-8, it is characterized in that, also be provided with electric heater in the described press-bearing water tank.

10. separated type solar water heater according to claim 9 is characterized in that, described fin is copper or aluminium matter.

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