Glass evacuated tube solar water heater capable of producing distilled water

Abstract

The present invention relates to the technical field of solar water heaters. Provided is a glass evacuated tube solar water heater capable of producing distilled water. The glass evacuated tube solar water heater comprises an outer water tank, a plurality of upward glass evacuated heat collector tubes being communicatedly provided on the outer water tank, one end of each glass evacuated heat collector tube being provided with an opening while the other end thereof being sealed. The outer water tank is provided with a water outlet and a water inlet; a guide tube is provided in each glass evacuated heat collector tube, and the upper end of the guide tube is close to the sealed end of the glass evacuated heat collector tube and has a gap with the sealed end of the glass evacuated heat collector tube; the lower end of the guide tube is connected to an inner water tank, the inner water tank being provided with a water outlet; the water level in the glass evacuated heat collector tube is lower than the upper end of the guide tube, and after being heated and vaporized by solar energy, water in the glass evacuated heat collector tube flows into the inner water tank through the guide tube. The present invention can produce distilled water and achieves a simple and reasonable structural design.

Description

Glass vacuum tube solar water heater that produces distilled water Technical Field

[0001] The invention relates to the technical field of solar water heaters, in particular to a glass vacuum tube solar water heater capable of producing distilled water. Background Art

[0002] Solar water heaters in existing technologies can only heat liquid water, but in areas with poor living environments, the quality of drinking water becomes a problem. Using solar water heaters to solve the problem of drinking water quality has become a research and development direction for technicians. Water heaters that can produce distilled water in existing technologies are manufactured using double-pass heat collecting tubes, which have problems such as high manufacturing costs and difficulty in promotion.

[0003] Summary of the Invention

[0004] The present invention overcomes the deficiencies of the prior art and provides a glass vacuum tube solar water heater which has a simple and reasonable structural design and can produce distilled water.

[0005] The technical solution adopted in the present invention is:

[0006] A glass vacuum tube solar water heater capable of producing distilled water comprises an outer water tank, on which a plurality of upwardly directed glass vacuum heat collecting tubes are connected, one end of each glass vacuum heat collecting tube being open and the other end being closed, the outer water tank having a water outlet and a water inlet, a conduit being provided within the glass vacuum heat collecting tube, the upper end of the conduit being close to the closed end of the glass vacuum heat collecting tube and having a gap therewith, the lower end of the conduit being connected to an inner water tank, the inner water tank having a water outlet, the water level within the glass vacuum heat collecting tube being lower than the upper end of the conduit, the water within the glass vacuum heat collecting tube being vaporized by solar heating and then flowing to the inner water tank through the conduit.

[0007] The inner water tank is located inside the outer water tank or part of the inner water tank is located inside the outer water tank, and there is a heat exchange effect between the inner water tank and the outer water tank.

[0008] Wherein, the inner water tank is connected to an overflow exhaust pipe, and the upper end of the overflow exhaust pipe is higher than the bottom of the inner water tank.

[0009] The outer water tank is located below the glass vacuum heat collecting tube, the closed end of the glass vacuum heat collecting tube is located above, and the open end of the glass vacuum heat collecting tube is located below.

[0010] The water outlet of the outer water tank is connected to an exhaust pipe, and one end of the exhaust pipe extends upward.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The glass vacuum tube solar water heater in the present invention can produce distilled water, and the distilled water produced is drinkable. It can produce distilled water for daily drinking for families or units in the area where the product is installed, especially it can solve the drinking water problem for people in remote rural areas, mountainous areas, islands and other places where there is a lack of suitable drinking water. The overall structure adopts conventional single-head heat collecting tubes, which have better quality, easier maintenance and relatively lower manufacturing cost than double-head heat collecting tubes.

[0013] Compared with the double-pass vacuum tube solar water heater, the present invention does not require sewage discharge, because the vacuum tube opening in the present invention is connected to the outer water tank downward, and the concentrated water left due to evaporation automatically remains in the outer water tank and is automatically discharged continuously as the hot water is used, while the double-pass vacuum tube type requires regular sewage discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG1 is a schematic structural diagram of the present invention. DETAILED DESCRIPTION

[0015] The present invention will be further described below with reference to the accompanying drawings and through examples.

[0016] As shown in Figure 1, this embodiment provides a glass vacuum tube solar water heater that can produce distilled water, including an outer water tank 1. A plurality of upward glass vacuum tubes 2 are connected to the outer water tank 1. The glass vacuum tubes 2 have an opening at one end and a closed end. The outer water tank 1 has a water outlet 11 and a water inlet 12. Water from the outside enters the outer water tank 1 from the water inlet 12, and the water in the outer water tank 1 is discharged from the water outlet 11. A conduit 3 is provided in the glass vacuum tube 2. The upper end of the conduit 3 is close to the closed end of the glass vacuum tube 2 and has a gap with the closed end of the glass vacuum tube 2. The lower end of the conduit 3 is connected to the inner water tank 4. The inner water tank 4 has a water outlet 42. The water level in the glass vacuum tube 2 is lower than the upper end of the conduit 3. The water in the glass vacuum tube 2 is evaporated by solar heating and flows to the inner water tank 4 through the conduit 3.

[0017] In this embodiment, the water level in the glass vacuum heat collecting tube 2 does not exceed the upper end of the conduit 3. The water in the glass vacuum heat collecting tube 2 vaporizes under the sunlight, and the vaporized water flows downward through the conduit 3. The area above the water level line in the glass vacuum heat collecting tube 2 has a higher air pressure than the outside due to water vaporization. The conduit 3 is connected to the outside atmosphere and can efficiently collect the vaporized water and discharge it. The conduit 3 drains the vaporized water to the inner water tank 4. The inner water tank 4 has a water outlet 42. The user can take water through the water outlet 42 of the inner water tank.

[0018] Among them, it should be noted that, in this embodiment, the water body in the outer water tank 1 and the water column in the upper glass vacuum heat collecting tube 2 are integrated into a whole. The law of heat convection is used to make hot water float upward and cold water sink downward, preventing the heat of the water column in the glass vacuum heat collecting tube 2 from being directly transferred downward to the outer water tank 1 below, so that the water in the upper part of the glass vacuum heat collecting tube 2 can be quickly heated and heated to vaporization, and the conduit passes through this integrated water body to directly connect the steam generating chamber (the upper part of the glass vacuum heat collecting tube 2) and the steam condensation water tank (inner water tank 4), so that the conduit 3 can drain the vaporized water to the inner water tank 4.

[0019] As a preferred embodiment, the inner water tank 4 is located within the outer water tank 1, or a portion of the inner water tank 4 is located within the outer water tank 1, and heat exchange occurs between the inner water tank 4 and the outer water tank 1. The inner water tank 4 is made of metal and has a higher temperature due to the collection of vaporized water. The temperature of the outer water tank 1 is relatively low, and the heat exchange between the inner water tank 4 and the outer water tank 1 facilitates condensation of water and transfers heat from the inner water tank 4 to the outer water tank 1, achieving efficient heating.

[0020] In this embodiment, the inner water tank 4 is connected to an overflow exhaust pipe 41, and the upper end of the overflow exhaust pipe 41 is higher than the bottom of the inner water tank 4; after the overflow exhaust pipe 41 is set, when the water collected in the inner water tank 4 exceeds the preset value, the excess water can be discharged, and at the same time, the inner water tank 4 can be kept connected to the outside atmosphere in real time.

[0021] In this embodiment, the outer water tank 1 is positioned below the glass evacuated heat collecting tubes 2, with the closed end of the glass evacuated heat collecting tubes 2 positioned at the top and the open end of the glass evacuated heat collecting tubes 2 positioned at the bottom. In this embodiment, the outer water tank 1 is positioned at the bottom, closer to the ground, and with its center of gravity lowered, it can better withstand adverse interference from factors such as typhoons.

[0022] In this embodiment, the water outlet 11 of the outer water tank 1 is connected to an exhaust pipe 5, one end of the exhaust pipe 5 extends upward, and the other end of the exhaust pipe 5 is connected to a water valve 51; in this embodiment, the exhaust pipe 5 is provided to allow the outer water tank 1 to exhaust and drain water.

Claims

1. A glass vacuum tube solar water heater capable of producing distilled water, comprising an outer water tank, the outer water tank being connected to a plurality of upward glass vacuum heat collecting tubes, the glass vacuum heat collecting tubes having an opening at one end and a closed end at the other end, the outer water tank having a water outlet and a water inlet, characterized in that: A conduit is provided in the glass vacuum heat collecting tube, the upper end of the conduit is close to the closed end of the glass vacuum heat collecting tube and has a gap with the closed end of the glass vacuum heat collecting tube, the lower end of the conduit is connected to the inner water tank, the inner water tank has a water outlet, the water level in the glass vacuum heat collecting tube is lower than the upper end of the conduit, and the water in the glass vacuum heat collecting tube is vaporized by solar energy heating and flows to the inner water tank through the conduit.

2. The glass vacuum tube solar water heater capable of producing distilled water as claimed in claim 1, characterized in that: The inner water tank is located inside the outer water tank or part of the inner water tank is located inside the outer water tank, and there is a heat exchange effect between the inner water tank and the outer water tank.

3. The glass vacuum tube solar water heater capable of producing distilled water as claimed in claim 1, characterized in that: The inner water tank is connected with an overflow exhaust pipe, and the upper end of the overflow exhaust pipe is higher than the bottom of the inner water tank.

4. The glass vacuum tube solar water heater capable of producing distilled water as claimed in claim 1, characterized in that: The outer water tank is located below the glass vacuum heat collecting tube, the closed end of the glass vacuum heat collecting tube is located above, and the open end of the glass vacuum heat collecting tube is located below.

5. The glass vacuum tube solar water heater capable of producing distilled water as claimed in claim 1, characterized in that: The water outlet of the outer water tank is connected to an exhaust pipe, and one end of the exhaust pipe extends upward.

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