CN202692476U - Vacuum insulation solar water heater - Google Patents

Abstract

The utility model relates to a solar water heater, in particular to a solar water heater that is insulated by a vacuum insulation device. The utility model comprises one or more collectors (1), a water tank (2), the water tank comprising an outer shell (3) and an inner tank (4), and the barrel parts of the outer shell (3) and the inner tank (4) adopt a closed vacuum insulation structure (5). The barrel part of the water tank is a vacuum enclosed space, which realizes the heat insulation of the water in the water tank, does not need to use chemical insulation materials, simplifies the production process, improves production efficiency, and reduces product costs. In addition, the water tank has a longer insulation time, the water heater works more stably, and can better meet the user's hot water needs.

Description

Vacuum insulation solar water heater

technical field

The utility model relates to a solar water heater, in particular to a solar water heater which is insulated by a vacuum heat preservation device. the

Background technique

A traditional solar water heater consists of a water storage tank and a heat collector. Water storage tanks generally use foaming insulation materials for heat preservation. The most commonly used insulation material is polyurethane foam. The foaming process of polyurethane materials has special requirements for the production environment. Toxic gas will be released, and curing and aging treatment are required after foaming, which seriously affects production efficiency. The workshop occupies a large area, and polyurethane is limited by the price of chemical materials, so the cost is relatively high. the

In addition, traditional solar water heaters usually pass the water in the water storage tank directly into the flow channel of the heat collector to exchange heat with the heat collector, which is easy to form scale on the inner wall of the flow channel of the heat collector, which affects the use of the solar heat collector Life, and reduce the heat transfer efficiency of the collector. Since the water in the water storage tank is both the heated medium and the heat exchange medium, it is impossible to separate the heated medium from the heat exchange medium. The water heater was not working properly. the

Utility model content

The purpose of this utility model is to overcome the above-mentioned defects in the prior art, to provide a vacuum insulation structure, which can realize the separation of the heated medium and the heat exchange medium, effectively prevent the medium in the flow channel of the water heater collector from freezing, and can Anti-freeze, anti-scaling, and high thermal efficiency, vacuum insulation solar water heater that can better meet the needs of users. the

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

Provide a kind of indirect heat exchange type solar water heater with vacuum insulation structure, comprise one or more heat collectors, a water storage tank, described water storage tank includes outer shell and inner container, and its improvement is: described outer shell and inner container The barrel part adopts a closed vacuum insulation structure. the

Preferably, a sub-inner is provided in the inner tank, and the sub-inner communicates with the heat collector to form a closed heating medium circulation system. the

Preferably, the outer wall of the sub-inner is provided with radially distributed heat conduction fins. the

Preferably, the sub-inner is provided with a water outlet pipe and a water inlet pipe, and the length of the water outlet pipe extending into the sub-inner is shorter than the length of the water inlet pipe extending into the sub-inner. the

Preferably, the heat collector includes a lower water header and an upper water header, and the lower water header and the upper water header are respectively connected with the outlet pipe and the water inlet pipe of the sub-liner, and the lower water header and the upper water header are respectively connected to each other. The upper water headers are communicated through drain pipes. the

Preferably, the heat collector can be one or more connections, the heat collector includes a heat collector shell, a heat sink, the heat sink includes an upper water header, a lower water Headers, row pipes, and heat absorbers, the heat absorbing devices are arranged in the shell of the heat collector. the

The beneficial effects of the solar water heater with vacuum insulation structure described in the utility model are:

Due to the adoption of the above structure, the barrel part of the water storage tank is a vacuum airtight space, which realizes the heat insulation of the water in the water storage tank, does not need to use chemical heat preservation materials, simplifies the production process, improves the production efficiency, and reduces the product cost. Moreover, the heat preservation time of the water storage tank is longer, and the water heater works more stably, which solves the freezing problem of the collector in cold and freezing areas, and can better meet the hot water demand of users. the

Description of drawings

Fig. 1 is the overall structural representation of the utility model embodiment;

Fig. 2 is a side cross-sectional structure diagram of an embodiment of the utility model. the

Detailed ways

As shown in Figure 1, this embodiment includes a heat collector 1 and a water storage tank 2, and the water storage tank 2 includes an outer shell 3 and an inner tank 4, and the barrel parts of the outer shell 3 and the inner tank 4 form an airtight The vacuum insulation space 5, the inner tank 4 is provided with a sub-inner tank 6, and the sub-inner tank 6 communicates with the heat collector 1. The heat collector 1 sends hot water into the sub-inner tank 6, exchanges heat with the cold water in the inner tank 4 to obtain hot water, and the cooled water in the sub-inner tank 6 flows back to the heat collector 1 for reheating, and the cycle goes on and on. Through the sub-inner heat exchange device in the inner tank, the heat collector is connected to the water inlet and outlet pipes of the sub-inner through the upper water header and the lower water header, and the heated medium (water) is installed in the inner tank for heat exchange. The medium circulates in the sub-inner tank, the heat collector and the medium flow channel, so that the heated medium is separated from the heat exchange medium, preventing the formation of scale in the flow channel of the flat solar collector, and the heat exchange medium with antifreeze function can also be used Antifreeze, high thermal efficiency. the

In this embodiment, the heat collector 1 includes an upper water header 11 and a lower water header 10, and the upper water header 11 and the lower water header 10 are respectively connected to the water inlet pipe 9 and the water inlet pipe 9 of the sub-inner tank 6. The water outlet pipe 8 is connected, and the upper water header 11 and the lower water header 10 are connected through the drain pipe 12 . In order to form the flow direction of the medium, the height of the water outlet pipe 8 in the sub-inner tank 6 is greater than that of the water inlet pipe 9 . In order to increase the contact area between the sub-inner tank and the cold water in the inner tank and further improve the heat exchange efficiency, in this embodiment, the outer wall of the sub-inner tank 6 is provided with radially distributed heat conduction fins 7 . the

In addition, specifically, the heat collector (1) described in this embodiment includes a heat collector shell (13), a heat absorbing device, and the heat absorbing device includes an upper water header, a lower water header, Exhaust pipes, heat absorbing body, and the heat absorbing device is arranged in the shell of the heat collector. the

The above descriptions are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the specification of the utility model and the contents of the accompanying drawings may be directly or indirectly used in Other relevant technical fields are all included in the patent protection scope of the present utility model in the same way. the

Claims (6)

1. A vacuum insulated solar water heater, comprising one or more heat collectors (1), a water storage tank (2), the water storage tank includes a shell (3) and an inner tank (4), characterized in that: the The middle part of the shell (3) and the inner tank (4) adopts a closed vacuum insulation structure (5). 2. The vacuum insulated solar water heater according to claim 1, characterized in that: a sub-inner tank (6) is arranged in the inner tank (4), and the sub-inner tank (6) and the heat collector (1) connected. 3. The vacuum insulated solar water heater according to claim 2, characterized in that: the outer wall of the sub-inner tank (6) is provided with several heat conducting fins (7) distributed radially. 4. The vacuum insulated solar water heater as claimed in claim 2, characterized in that: the inner tank (6) is provided with an outlet pipe (8) and an inlet pipe (9), and the outlet pipe extends into the inner tank Length is shorter than the length that water inlet pipe stretches into sub-inner. 5. The vacuum insulated solar water heater according to claim 1, characterized in that: said heat collector (1) includes a lower water header (10) and an upper water header (11), said lower water header The pipe (10) and the upper water header (11) are respectively connected with the outlet pipe (8) and the water inlet pipe (9) of the inner tank (3), and the lower water header (10) and the upper water header (11) pass through The row pipe (12) is connected. 6. The vacuum insulated solar water heater according to claim 1, characterized in that: the heat collector (1) can be one or multiple connections, and the heat collector (1) includes a heat collector The device shell (13) is a heat absorbing device, and the heat absorbing device includes an upper water header, a lower water header, a row pipe, and a heat absorbing body, and the heat absorbing device is arranged in the heat collector shell.

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