High-performance anti-overheating controllable solar water heater

Abstract

The utility model provides a high-performance overheating-preventing controllable solar water heater, which solves the technical problems that hot water is not enough in winter or in bad weather and water in a water tank is repeatedly boiled and overheated in summer or in good sunlight. A plurality of evacuated collector tubes are installed between an upper profile frame and a lower profile frame of the profile frame side by side to form a collector tube row, the solar heat collector is characterized by further comprising a sunshade curtain and a chain transmission mechanism, the chain transmission mechanism is arranged in the profile frame, and the upper side edge and the lower side edge of the sunshade curtain are respectively connected with the chain transmission mechanism. The sun-shading curtain is located above the heat collecting tube row, a mirror reflection layer is arranged on the back face of the sun-shading curtain, the chain transmission mechanism can drive the sun-shading curtain to move to the position below the heat collecting tube row along an oval track, and the mirror reflection layer faces the position below the heat collecting tube row.

Description

Technical Field

[0001] The utility model relates to the field of solar water heaters, in particular to a high-performance overheat-proof controllable solar water heater. Background Art

[0002] Solar water heaters mostly refer to flat-plate collectors, which include a profile frame with multiple vacuum collector tubes arranged inside the profile frame. A water tank is installed on the top of the profile frame. The upper ends of the multiple vacuum collector tubes are connected to the water tank. The vacuum collector tubes absorb solar energy to heat the liquid in the water tank.

[0003] However, solar collectors are greatly affected by the weather, have low efficiency in winter, and overheat in summer. As a result, users do not have enough hot water in winter or when the weather is bad, and the water in the water tank boils and overheats repeatedly in summer or when the sunshine is good, causing scaling of the water tank and shortening of its life. Utility Model Content

[0004] The utility model provides a high-performance controllable solar water heater that prevents overheating, and solves the technical problems of insufficient hot water in winter or under bad weather conditions and repeated boiling and overheating of water in a water tank in summer or under good sunshine conditions.

[0005] The utility model is realized by the following technical solutions:

[0006] A high-performance anti-overheating controllable solar water heater comprises a profile frame, a plurality of vacuum heat collecting tubes are installed side by side between an upper profile frame and a lower profile frame of the profile frame to form a heat collecting tube row, a sunshade and a chain transmission mechanism, the chain transmission mechanism is arranged in the profile frame, and the upper and lower sides of the sunshade are respectively connected to the chain transmission mechanism;

[0007] The sunshade curtain is located above the heat collecting tube row, and a mirror reflection layer is provided on the back of the sunshade curtain. The chain transmission mechanism can drive the sunshade curtain to move to the bottom of the heat collecting tube row along an elliptical trajectory and make the mirror reflection layer face the bottom of the heat collecting tube row.

[0008] Furthermore, the length of the sunshade in the left-right direction is not greater than the length of the heat collecting tube row in the left-right direction.

[0009] Furthermore, the chain transmission mechanism includes a driving shaft and a driven shaft, and the driving shaft and the driven shaft are respectively swivel-mounted on the left and right side frames of the profile frame, and the axes of the driving shaft, the driven shaft and the vacuum collector tube are all on the same plane. Driving sprockets are installed on the upper and lower ends of the driving shaft, and driven sprockets are installed on the upper and lower ends of the driven shaft, and the driving sprocket and the driven sprocket are connected as a whole through a chain.

[0010] Furthermore, the sunshade includes a plurality of metal plates arranged along the front-to-back direction, and a connecting frame is provided on the unit section of the chain, and the connecting frame is connected to the bottom side of the end of the metal plate.

[0011] Furthermore, the metal plate is made of aluminum strip.

[0012] Furthermore, a driving motor is installed on the outer side of the profile frame, and the output shaft of the driving motor is drivingly connected to the driving shaft.

[0013] Furthermore, a black coating is provided on the front side of the sunshade.

[0014] Compared with the prior art, the beneficial effects achieved by the utility model are as follows:

[0015] 1. In winter or when the light is poor, when it is detected that the water temperature in the water tank is low and does not meet the user's requirements, the sunshade is driven by the chain transmission mechanism to move to the bottom of the heat collecting tube row. At this time, the mirror reflection layer faces the bottom of the heat collecting tube row, which can reflect sunlight to the lower part of the vacuum heat collecting tube, thereby improving the heat absorption efficiency of the vacuum heat collecting tube, so that the water temperature in the water tank rises quickly and reaches the user's required water temperature in a short time;

[0016] In summer or when the sunlight is good, when it is detected that the water temperature in the water tank is high and exceeds the user's usage requirements, the sunshade is driven by the chain transmission mechanism to move above the heat collecting tube row, thereby shielding the sunlight, reducing the heat absorption of the vacuum heat collecting tube, and avoiding the water temperature in the water tank from overheating and scaling, thereby reducing the service life;

[0017] 2. The utility model can effectively control the temperature of the water in the water tank by adjusting the radiation amount irradiated to the vacuum heat collecting tube of the solar water heater, avoiding the problem of insufficient hot water in winter or when the light is poor, and overheating and scaling of the water in summer or when the light is good, which will affect the life of the solar water heater, making the water temperature controllable;

[0018] 3. The chain transmission mechanism includes a driving shaft, a driven shaft, a driving sprocket, a driven sprocket and a chain. The chain drives the sunshade to move along an elliptical track. The operation is stable, and the shaded area of ​​the sunshade can be accurately adjusted to control the water temperature in the water tank.

[0019] 4. The sunshade curtain consists of several metal plates arranged in the front-to-back direction. The use of metal plates improves the durability of the sunshade curtain and ensures its service life;

[0020] 5. There is a black coating on the front of the sunshade. When the sunshade blocks the top of the solar collector tube row, it can absorb light, prevent light from shining on the solar collector tube row, and improve the shading effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an overall schematic diagram of the high-performance controllable solar water heater with overheat prevention described in the utility model;

[0022] Figure 2 This is a schematic diagram of the distribution of the sunshade curtain and the heat collecting tube row of the utility model;

[0023] Figure 3 This is a schematic diagram of the sunshade curtain of the utility model;

[0024] Figure 4 This is a schematic diagram of the connection between the sunshade and the chain described in the utility model;

[0025] In the figure: 1. water tank, 2. bracket, 3. profile frame, 4. collector tube row, 5. sunshade, 51. mirror reflection layer, 52. black coating, 6. driving shaft, 7. driven shaft, 8. chain, 9. driving motor. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] In the description of the utility model, it should be understood that the terms "front", "rear", "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the utility model. The utility model is further described below in conjunction with the drawings and embodiments.

[0028] like Figure 1 As shown, this embodiment discloses a high-performance anti-overheating controllable solar water heater, which mainly includes a water tank 1, a bracket 2 and a profile frame 3. The water tank 1 is installed on the top of the bracket 2, and the profile frame 3 is installed on the bracket 2. A plurality of vacuum heat collecting tubes are installed side by side between the upper profile frame and the lower profile frame of the profile frame 3 to form a heat collecting tube row 4, and the upper end of the vacuum heat collecting tube is connected to the water tank 1. The water tank 1 is a non-pressure insulation water tank, which plays the role of storing hot water. The bracket is a matching aluminum profile or galvanized sheet flat roof bracket, which plays the role of fixing the water tank and the vacuum heat collecting tube. The vacuum heat collecting tube is a full-glass vacuum solar heat collecting tube, which absorbs solar energy and converts it into heat energy to heat the water in the water tank.

[0029] like Figure 2-4As shown, in order to overcome the technical problems of insufficient hot water in winter or bad weather and repeated boiling and overheating of water in the water tank in summer or good sunshine. The high-performance controllable solar water heater with anti-overheating described in this embodiment also includes a sunshade 5 and a chain transmission mechanism, the chain transmission mechanism is arranged in the profile frame, the chain transmission mechanism includes a driving shaft 6 and a driven shaft 7, the driving shaft 6 and the driven shaft 7 are respectively swivel-mounted on the left and right side frames of the profile frame through the bearing seat assembly, the axis of the driving shaft 6, the driven shaft 7 and the vacuum heat collecting tube are all on the same plane, the upper and lower ends of the driving shaft 6 are both equipped with driving sprockets, the upper and lower ends of the driven shaft 7 are both equipped with driven sprockets, and the driving sprockets and the driven sprockets are connected as a whole through a chain 8. In order to enable the driving shaft 6 to rotate in the zone, a driving motor 9 is installed on the outer side of the profile frame, the output shaft of the driving motor 9 is connected to the driving shaft 6, the driving shaft 6 is driven to rotate by the driving motor, and the driven shaft 7 rotates synchronously due to the action of the chain 8.

[0030] The sunshade curtain 5 includes a plurality of metal plates arranged along the front-to-back direction. In the present embodiment, the metal plates are made of aluminum strips, which are low in cost, light in weight and have a long service life. The back of the sunshade curtain 5 is coated with a mirror reflection layer 51, and the front is coated with a black coating 52. A connecting frame is provided on the unit section of the chain 8, and the connecting frame is connected to the bottom side of the end of the metal plate by a bolt assembly. With such a design, the upper and lower sides of the sunshade curtain 5 are respectively connected to the chain transmission mechanism. Initially, the sunshade curtain 5 is located above the solar collector tube row, with the black coating facing upwards, so as to provide shade and prevent direct sunlight from shining on the vacuum solar collector tube. The chain transmission mechanism can drive the sunshade curtain 5 to move along an elliptical trajectory to the bottom of the solar collector tube row, and make the mirror reflection layer face the bottom of the solar collector tube row.

[0031] In this embodiment, the shaded area of ​​the sunshade 5 can be accurately adjusted by the chain transmission mechanism to control the water temperature in the water tank. In this embodiment, the left-right length of the sunshade 5 is equal to the left-right length of the heat collecting tube row. When the sunshade 5 moves above the heat collecting tube row, it can completely block the sunlight.

[0032] The specific working process of the high-performance controllable solar water heater with overheat prevention described in this embodiment is as follows:

[0033] When sunlight shines on the vacuum heat collecting tube, it absorbs heat and transfers it to the water in the water tank, so that the water temperature rises, thus obtaining hot water for domestic use. In winter or when the light is poor, when it is detected that the water temperature in the water tank is low and does not meet the user's use requirements, the chain transmission mechanism drives the sunshade to move to the bottom of the heat collecting tube row. At this time, the mirror reflection layer faces the bottom of the heat collecting tube row, which can reflect sunlight to the lower part of the vacuum heat collecting tube, thereby improving the heat absorption efficiency of the vacuum heat collecting tube, so that the water temperature in the water tank rises quickly and reaches the user's required water temperature in a short time; in summer or when the light is good, when it is detected that the water temperature in the water tank is high and exceeds the user's use requirements, the chain transmission mechanism drives the sunshade to move to the top of the heat collecting tube row, thereby shielding the sunlight, reducing the heat absorption of the vacuum heat collecting tube, avoiding the water temperature in the water tank from overheating and scaling, and reducing the service life; the sunshade is used to adjust the size of the sunshade area above the heat collecting tube row, so that the water temperature of the solar water heater can be controlled.

Claims

1. A high-performance anti-overheating controllable solar water heater, comprising a profile frame, wherein a plurality of vacuum heat collecting tubes are installed side by side between an upper profile frame and a lower profile frame of the profile frame to form a heat collecting tube row, characterized in that: It also includes a sunshade and a chain transmission mechanism, wherein the chain transmission mechanism is arranged in the profile frame, and the upper and lower sides of the sunshade are respectively connected to the chain transmission mechanism; The sunshade curtain is located above the heat collecting tube row, and a mirror reflection layer is provided on the back of the sunshade curtain. The chain transmission mechanism can drive the sunshade curtain to move to the bottom of the heat collecting tube row along an elliptical trajectory and make the mirror reflection layer face the bottom of the heat collecting tube row.

2. The high-performance overheat-proof controllable solar water heater according to claim 1 is characterized in that: The length of the sunshade in the left-right direction is not greater than the length of the heat collecting tube row in the left-right direction.

3. The high-performance controllable solar water heater with overheat prevention according to claim 1 is characterized in that: The chain transmission mechanism includes a driving shaft and a driven shaft, and the driving shaft and the driven shaft are respectively swivel-mounted on the left and right side frames of the profile frame, and the axes of the driving shaft, the driven shaft and the vacuum collector tube are all on the same plane. Driving sprockets are installed on the upper and lower ends of the driving shaft, and driven sprockets are installed on the upper and lower ends of the driven shaft, and the driving sprocket and the driven sprocket are connected as a whole through a chain.

4. The high-performance controllable solar water heater with overheat prevention according to claim 3 is characterized in that: The sunshade curtain comprises a plurality of metal plates arranged along the front-rear direction, and a connecting frame is arranged on the unit section of the chain, and the connecting frame is connected to the bottom side of the end of the metal plate.

5. The high-performance controllable solar water heater with overheat prevention according to claim 4 is characterized in that: The metal plate is made of aluminum strip plate.

6. The high-performance overheat-proof controllable solar water heater according to claim 3 is characterized in that: A driving motor is installed on the outer side of the profile frame, and the output shaft of the driving motor is drivingly connected to the driving shaft.

7. The high-performance controllable solar water heater with overheat prevention according to any one of claims 1 to 6, characterized in that: The front side of the sunshade is provided with a black coating.

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