Internal emptying device of solar heat collector

Abstract

The utility model relates to the technical field of solar thermal collectors, in particular to an internal emptying device of a solar thermal collector. The water tank is installed at the top end of the support, and a plurality of vacuum pipes are linearly inserted into the outer wall of the water tank at equal intervals. A detachable filtering assembly is installed at the top end of the vacuum pipe and used for preventing water in the vacuum pipe from being discharged into the water tank, and meanwhile scale is discharged into the water tank. Through the arrangement of the filtering assembly, water scale and other impurities in the vacuum pipe can be effectively prevented from being discharged into the water tank along with water, so that the water quality in the water tank is kept pure, and because the water scale is intercepted by the filtering assembly, a user does not need to frequently clean the water tank; through connection of an elastic spring and a limiting block and cooperation of a limiting groove, the stability of the limiting block is guaranteed, meanwhile, the limiting block is allowed to flexibly move when needed, the filtering assembly can be easily mounted and dismounted, and a user can conveniently mount and regularly clean or replace the filtering assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of solar collector, concretely relates to a solar collector internal emptying device. BACKGROUND

[0002] The solar collector is a kind of equipment that converts solar radiation into heat energy. It absorbs solar radiation and transfers the generated heat energy to heat transfer medium, so as to realize the collection and utilization of heat energy. The solar collector plays a key role in the solar energy utilization system, can concentrate dispersed solar energy, is used to heat water, generate steam, etc., provides clean and sustainable energy. The types of solar collector include flat plate collector and vacuum tube collector. In cold winter, the water in the solar collector will freeze, causing pipe and collector to freeze and crack. Therefore, internal emptying method is used to prevent water from freezing in the collector, thereby avoiding the risk of freeze cracking. In addition, emptying can reduce heat loss and improve the overall efficiency of the system.

[0003] Although there is an emptying device that can make the water in the vacuum tube inside into the water tank by changing the air pressure, such as Chinese patent application No. 202120474992.7, which discloses a solar collector anti-freezing emptying device. The piston block, air duct and air pump are arranged to push the piston block upwards by changing the air pressure, and then make the water in the solar tube completely into the water tank. However, the existing emptying device has the following shortcomings:

[0004] In the process of pushing the piston block upwards by changing the air pressure, and then making the water in the solar tube completely into the water tank, the scale formed inside the solar tube may also be discharged into the water tank. The scale contains various minerals and impurities. These substances will directly affect the purity and safety of water quality after entering the water tank. Once the scale enters the water tank, it becomes relatively difficult to completely remove it. Not only does it increase the workload of daily maintenance, but it may also require professional cleaning services to handle. In view of this, we propose a solar collector internal emptying device. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a solar collector internal emptying device to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the utility model provides a solar collector internal emptying device, which comprises a support, a water storage bucket and a water tank. The water tank is installed at the top end of the support. A plurality of vacuum tubes are linearly inserted at equal distances on the outer wall of the water tank.

[0007] The top end of the vacuum tube is provided with a detachable filter assembly. The filter assembly is used to block the water inside the vacuum tube from being discharged into the water tank, and the scale is also discharged at the same time.

[0008] As a further improvement of the technical solution, the filter assembly comprises a mounting cylinder and a filter screen, the filter screen is mounted at the top end of the mounting cylinder, a plurality of grooves are formed in the outer wall of the bottom end of the mounting cylinder, a limiting assembly is mounted in the grooves, a plurality of limiting grooves are formed in the inner wall of the top end of the vacuum pipe, and the limiting assembly is matched with the limiting grooves.

[0009] As a further improvement of the technical solution, the limiting assembly comprises an elastic spring and a limiting block, the bottom end of the limiting block is fixedly connected with the top end of the elastic spring, the bottom end of the elastic spring is fixedly connected with the bottom end inside the groove, the limiting block is matched with the limiting groove, an adjusting groove is formed in the outer wall of the top end of the vacuum pipe, and the adjusting groove is communicated with the limiting groove.

[0010] As a further improvement of the technical solution, the vacuum pipe is slidably connected with a piston block, a gas guide pipe is mounted on the outer wall of the water storage barrel, a gas pump is mounted on the outer wall of the gas guide pipe, the end of the gas guide pipe is arranged in the water tank, a plurality of delivery pipes are arranged on the outer wall of the area inside the water tank where the gas guide pipe is located, the delivery pipes are respectively bonded to the inner walls of the vacuum pipes, and the piston block and the delivery pipes are slidably connected.

[0011] As a further improvement of the technical solution, the water storage barrel is provided with a water delivery pipe, the end of the water delivery pipe is connected with the side wall of the water tank, and a water pump is mounted on the outer wall of the water delivery pipe.

[0012] Compared with the prior art, the utility model has the advantages of:

[0013] In the internal emptying device of the solar heat collector, the filter assembly is arranged, which can effectively block the scale and other impurities in the vacuum pipe from being discharged into the water tank with water, so that the water quality in the water tank is kept pure. Since the scale is intercepted by the filter assembly, the user does not need to frequently clean the water tank, thereby reducing the workload and cost of daily maintenance.

[0014] The elastic spring and the limiting block are connected with the limiting groove to ensure the stability of the limiting block and allow it to move flexibly when needed, so that the filter assembly can be easily installed and disassembled, and the user can easily install and regularly clean or replace it. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the overall structure of the utility model; Figure 2 It is a schematic diagram of the structure of A in the utility model.

[0018] The meanings of the various reference numerals in the Figures are as follows:

[0019] 100, support; 200, water storage bucket; 300, water tank; 301, vacuum tube; 400, filter assembly; 401, mounting cylinder; 402, filter screen; 4010, groove; 500, limiting assembly; 3011, limiting groove; 501, elastic spring; 502, limiting block; 3012, adjusting groove; 3010, piston block; 201, air guide pipe; 2010, air pump; 2011, conveying pipe; 202, water conveying pipe; 2020, water pump. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] A solar collector is a device that converts solar radiation into heat energy. It absorbs solar radiation and transfers the generated heat energy to a heat transfer medium, thereby realizing the collection and utilization of heat energy. The solar collector plays a key role in a solar utilization system, can concentrate dispersed solar energy, and is used for heating water, generating steam, etc., to provide clean and sustainable energy. The types of solar collectors include flat plate collectors and vacuum tube 301 collectors. In cold winter, the water in the solar collector will freeze, causing the pipe and the collector to crack, so the water in the collector is prevented from freezing by internal evacuation, thereby avoiding the risk of cracking. In addition, evacuation can reduce heat loss and improve the overall efficiency of the system.

[0022] Please refer to Figures 1-3 As shown in the drawings, the present embodiment provides an internal evacuation device for a solar collector, which comprises a support 100, a water storage bucket 200 and a water tank 300. The water tank 300 is installed at the top end of the support 100. Considering that the water scale formed inside the vacuum tube 301 may also be discharged into the water tank 300 during the process of discharging the water inside the vacuum tube 301 into the water tank 300 by changing the air pressure, the specific implementation is as follows: a plurality of vacuum tubes 301 are linearly inserted at equal distances on the outer wall of the water tank 300.

[0023] A detachable filter assembly 400 is installed at the top end of the vacuum tube 301. The filter assembly 400 is used to block the water scale from being discharged into the water tank 300 at the same time as the water inside the vacuum tube 301 is discharged into the water tank 300.

[0024] The improvement of the present embodiment is that:

[0025] Through the setting of the filter assembly 400, the scale and other impurities inside the vacuum pipe 301 can be effectively blocked from being discharged into the water tank 300 with the water, so as to keep the water quality in the water tank 300 pure. Since the scale is intercepted by the filter assembly 400, the user does not need to clean the water tank 300 frequently, reducing the workload and cost of daily maintenance. At the same time, the filter assembly 400 is detachable, which is convenient for the user to install and regularly clean or replace.

[0026] Firstly, the filter assembly 400 comprises a mounting cylinder 401 and a filter screen 402, the filter screen 402 is installed at the top end of the mounting cylinder 401, a plurality of grooves 4010 are formed on the outer wall of the bottom end of the mounting cylinder 401, a limiting assembly 500 is installed in the grooves 4010, and a plurality of limiting grooves 3011 are formed on the inner wall of the top end of the vacuum pipe 301, the limiting assembly 500 is matched with the limiting grooves 3011.

[0027] Through the filter screen 402, the scale and other impurities can be effectively blocked from being discharged into the water tank 300 with the water, so as to keep the water quality in the water tank 300 pure. Since the filter screen 402 can intercept most of the impurities, the user does not need to clean the water tank 300 frequently, reducing the workload and cost of daily maintenance. Not only time is saved, but also long-term operating cost is reduced.

[0028] In order to facilitate the user to replace the filter assembly 400, the limiting assembly 500 comprises an elastic spring 501 and a limiting block 502, the bottom end of the limiting block 502 is fixedly connected with the top end of the elastic spring 501, the bottom end of the elastic spring 501 is fixedly connected with the bottom end inside the groove 4010, the limiting block 502 is matched with the limiting groove 3011, and an adjusting groove 3012 is formed on the outer wall of the top end of the vacuum pipe 301 and communicates with the limiting groove 3011.

[0029] Through the connection of the elastic spring 501 and the limiting block 502 and the cooperation with the limiting groove 3011, the stability of the limiting block 502 is ensured, and at the same time, the limiting block 502 is allowed to move flexibly when needed, so that the filter assembly 400 can be easily installed and detached. Through the adjusting groove 3012 which communicates with the limiting groove 3011, the user can insert a simple tool or manually operate into the limiting groove 3011 inside the adjusting groove 3012 to push the limiting block 502 out of the limiting groove 3011 to adjust the position of the limiting block 502, so as to easily complete the replacement and maintenance of the filter assembly 400.

[0030] After installing the filtering assembly 400 at the top end of the vacuum tube 301, the emptying operation needs to be performed, the piston block 3010 is slidably connected in the vacuum tube 301, the air guide pipe 201 is installed on the outer wall of the water storage bucket 200, the air pump 2010 is installed on the outer wall of the air guide pipe 201, the air guide pipe 201 is arranged in the water tank 300, a plurality of conveying pipes 2011 are arranged on the outer wall of the air guide pipe 201 in the water tank 300, the plurality of conveying pipes 2011 are respectively bonded to the inner walls of the plurality of vacuum tubes 301, and the piston block 3010 and the conveying pipe 2011 are slidably connected; by starting the air pump 2010, the air pump 2010 conveys the gas in the water storage bucket 200 to the interiors of the plurality of vacuum tubes 301 through the air guide pipe 201 and the plurality of conveying pipes 2011, the piston block 3010 is pushed to slide upwards along the vacuum tube 301, and the water in the vacuum tube 301 is squeezed into the water tank 300, and due to the friction between the piston block 3010 and the inner wall of the vacuum tube 301, the formation of water scale is avoided.

[0031] In addition, the water conveying pipe 202 is installed on the outer wall of the water storage bucket 200, the end of the water conveying pipe 202 is connected with the side wall of the water tank 300, the water pump 2020 is installed on the outer wall of the water conveying pipe 202, necessary pressure is provided by starting the water pump 2020, and water flows from the water tank 300 to the interior of the water storage bucket 200 through the water conveying pipe 202.

[0032] When the solar heat collector internal emptying device is used, the limiting block 502 is pressed into the groove 4010 by a user, then the bottom end of the mounting cylinder 401 in the filtering assembly 400 is inserted into the top end of the vacuum tube 301, at this time, the limiting block 502 is elastically pushed into the limiting groove 3011 by the elastic force of the elastic spring 501, the installation of the filtering assembly 400 is completed, the filtering assembly 400 is installed in the vacuum tube 301, and the diameter does not exceed the outer wall of the vacuum tube 301, so that the user can insert the vacuum tube 301 into the water tank 300; then the emptying operation is performed, the air pump 2010 is started by the user, the air pump 2010 conveys the gas in the water storage bucket 200 to the interiors of the plurality of vacuum tubes 301 through the air guide pipe 201 and the plurality of conveying pipes 2011, the piston block 3010 is pushed to slide upwards along the vacuum tube 301, the water in the vacuum tube 301 is squeezed into the water tank 300, the filtering screen 402 can effectively block the water scale and other impurities from being discharged into the water tank 300 with the water, so that the water quality in the water tank 300 is kept pure, the water pump 2020 is started to provide necessary pressure, and water flows from the water tank 300 to the interior of the water storage bucket 200 through the water conveying pipe 202 and is stored;

[0033] Further supplement: The working principle of the solar collector: The solar collector absorbs solar radiation and converts it into heat energy. Specifically, after the solar radiation passes through the transparent cover plate, it is projected on the heat absorption plate, absorbed by the heat absorption plate and converted into heat energy, and then transmitted to the heat transfer working medium, so that the temperature of the heat transfer working medium is raised. The emptying device controls the direction of water flow to ensure that the water in the vacuum tube 301 can be emptied in cold weather to prevent freezing, and at the same time, the water in the water tank 300 is circulated and heated when needed, improving the effect of hot water supply.

[0034] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and do not limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A solar collector internal evacuation device, comprising a support (100), a water storage bucket (200) and a water tank (300), the water tank (300) is installed at the top end of the support (100), characterized in that: The outer wall of the water tank (300) is linearly and equidistantly provided with a plurality of vacuum tubes (301); A detachable filter assembly (400) is mounted at the top end of the vacuum tube (301), and the filter assembly (400) is used to block the water scale from being discharged into the water tank (300) along with the water in the vacuum tube (301).

2. The solar collector internal evacuation apparatus of claim 1, wherein: The filter assembly (400) comprises a mounting cylinder (401) and a filter screen (402), the filter screen (402) is mounted at the top end of the mounting cylinder (401), a plurality of grooves (4010) are formed in the outer wall of the bottom end of the mounting cylinder (401), a limiting assembly (500) is mounted in the groove (4010), a plurality of limiting grooves (3011) are formed in the inner wall of the top end of the vacuum tube (301), and the limiting assembly (500) is matched with the limiting groove (3011).

3. The solar collector internal evacuation apparatus of claim 2, wherein: The limiting assembly (500) comprises an elastic spring (501) and a limiting block (502), the bottom end of the limiting block (502) is fixedly connected with the top end of the elastic spring (501), the bottom end of the elastic spring (501) is fixedly connected with the bottom end inside the groove (4010), the limiting block (502) is matched with the limiting groove (3011), an adjusting groove (3012) is formed in the outer wall of the top end of the vacuum tube (301), and the adjusting groove (3012) is communicated with the limiting groove (3011).

4. The solar collector internal evacuation apparatus of claim 1, wherein: A piston block (3010) is slidably connected in the vacuum tube (301), a gas guide pipe (201) is mounted on the outer wall of the water storage bucket (200), a gas pump (2010) is mounted on the outer wall of the gas guide pipe (201), the end of the gas guide pipe (201) is arranged in the water tank (300), a plurality of conveying pipes (2011) are arranged on the outer wall of the area inside the water tank (300), the conveying pipes (2011) are respectively bonded to the inner walls of the vacuum tubes (301), and the piston block (3010) and the conveying pipes (2011) are slidably connected.

5. The solar collector internal evacuation apparatus of claim 1, wherein: A water conveying pipe (202) is mounted on the outer wall of the water storage bucket (200), the end of the water conveying pipe (202) is connected with the side wall of the water tank (300), and a water pump (2020) is mounted on the outer wall of the water conveying pipe (202).

Images