Solar hot water tank capable of preventing water from being shrunken due to suction

Abstract

The utility model relates to an anti-deflation solar hot water tank, and belongs to the technical field of solar water heaters. The exhaust pipe penetrating through the interior of the box body is arranged at the bottom of the box body, the first electromagnetic valve is installed on the exhaust pipe and used in cooperation with the pressure sensor, when the pressure in the box body is higher than or lower than a set value, the controller controls the first electromagnetic valve to be opened, external air enters the box body, and therefore the pressure inside and outside the box body is balanced; the box body can be effectively prevented from being sucked flat, and the service life is prolonged; meanwhile, the water supplementing tank is arranged at the top of the box body and used in cooperation with the liquid level sensor and the second electromagnetic valve, when the water level in the box body drops, water in the water supplementing tank can be automatically supplemented into the box body, and therefore it is guaranteed that the water level in the box body is stable, and the box body is prevented from being sucked to be flat due to negative pressure generated by water shortage.

Description

TECHNICAL FIELD

[0001] The utility model belongs to solar water heater technical field, concretely relates to a kind of anti-sucking solar water tank. BACKGROUND

[0002] Solar water tank is an important component of solar water heater, it is usually installed on roof, to receive solar energy and convert it into heat energy. However, the conventional solar water tank in the process of use, due to the water in the water tank is heated after volume expansion, it can cause the internal pressure of water tank to increase, when user uses hot water or the temperature of water in water tank reduces, the air pressure in water tank will gradually reduce and produce negative pressure, in turn cause water tank to be sucked under the action of internal and external air pressure difference, thereby affect its normal use and life. SUMMARY

[0003] In order to overcome the problem that the conventional solar water tank in the background art in the process of use, due to the water in the water tank is heated after volume expansion, it can cause the internal pressure of water tank to increase, when user uses hot water or the temperature of water in water tank reduces, the air pressure in water tank will gradually reduce and produce negative pressure, in turn cause water tank to be sucked under the action of internal and external air pressure difference, thereby affect its normal use and life, the utility model provides a kind of anti-sucking solar water tank;By being provided with exhaust pipe that penetrates its inside at the bottom of tank body, and being installed first electromagnetic valve on exhaust pipe, cooperate pressure sensor to use, when the pressure in tank body is higher or lower than set value, controller controls first electromagnetic valve to open, so that outside air enters tank body, to balance the pressure inside and outside tank body, can effectively prevent tank body to be sucked, prolong its service life;At the same time, water supplement tank is arranged at the top of tank body, and cooperate liquid level sensor and second electromagnetic valve to use, when the water level in tank body drops, the water in water supplement tank will be automatically supplemented to tank body, to ensure the water level stability in tank body, avoid tank body to be sucked due to negative pressure generated by water shortage.

[0004] To achieve the above object, the utility model is through following technical scheme realizes:A kind of anti-sucking solar water tank mainly includes tank body, exhaust pipe, pressure sensor, first electromagnetic valve, water supplement tank, water outlet pipe, controller, connecting assembly, second electromagnetic valve, liquid level sensor, the exhaust pipe is vertically installed at the bottom of tank body by connecting assembly, exhaust pipe top end penetrates tank body inner wall and extends to its top, bottom end is exposed to tank body outside and is installed with first electromagnetic valve, pressure sensor for measuring the internal air pressure of tank body is installed at the top of tank body, water outlet pipe that is communicated with its inside is installed on tank body side wall, water supplement tank is installed at the top, and water supplement tank bottom is communicated with tank body inside by pipeline, second electromagnetic valve is installed on pipeline, liquid level sensor is installed at the bottom of tank body, and controller is installed on tank body side wall and is electrically connected with pressure sensor, first electromagnetic valve, second electromagnetic valve, liquid level sensor.

[0005] The connecting assembly comprises a gland, a sealing ring, the bottom of the box body is provided with a connecting pipe in communication with the inside of the box body, an annular groove is formed on the inner wall of the connecting pipe, an annular protrusion with the same diameter as the annular groove is arranged on the exhaust pipe, a sealing ring is sleeved on the exhaust pipe and abuts against the annular groove, the bottom surface of the sealing ring abuts against the annular protrusion, an external thread is formed on the connecting pipe, the gland is sleeved on the connecting pipe and is threadedly connected with the connecting pipe, and the inner wall of the gland abuts against the end surface of the annular protrusion.

[0006] The water replenishing tank is internally provided with a filter screen for filtering impurities.

[0007] The outer circumferential surface of the gland is provided with anti-skid lines.

[0008] The beneficial effects of the utility model are as follows:

[0009] The utility model discloses a through the exhaust pipe that penetrates its inside is arranged at the bottom of the box body, and the first electromagnetic valve is installed on the exhaust pipe, and cooperates pressure sensor to use, when the pressure in the box body is higher than or lower than the set value, the controller controls the first electromagnetic valve to open, makes the outside air enter the box body, thereby balancing the pressure inside and outside the box body, can effectively prevent the box body from being sucked and flattened, prolongs its service life, simultaneously, the water replenishing tank is arranged at the top of the box body, and cooperates liquid level sensor and the second electromagnetic valve to use, when the water level in the box body drops, the water in the water replenishing tank will automatically replenish to the box body, thereby guaranteeing the water level stability in the box body, avoids the box body from being sucked and flattened because of the water shortage and produces negative pressure. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the three-dimensional schematic view of the utility model.

[0011] Figure 2 It is the three-dimensional schematic view of the utility model in the installation state.

[0012] Figure 3 It is Figure 2 The partial enlarged view of A in the figure.

[0013] Figure 4 It is the sectional three-dimensional schematic view of the utility model.

[0014] Figure 5 Figure 4 The partial enlarged view of B in the figure. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and beneficial effect of the utility model more clearly, the preferred embodiment of the utility model will be explained in detail in combination with the drawings, so as to facilitate the understanding of the technical personnel.

[0016] The utility model discloses a kind of anti-sucking solar water heater, the anti-sucking solar water heater mainly includes box 1, exhaust pipe 2, pressure sensor 3, first electromagnetic valve 4, water replenishing tank 5, water outlet pipe 6, controller 7, connecting assembly 8, second electromagnetic valve 9, liquid level sensor 10, the exhaust pipe 2 is vertically installed in box 1 bottom by connecting assembly 8, exhaust pipe 2 top end penetrates the inner wall of box 1 and extends to its top, bottom end is exposed to box 1 outside and is equipped with first electromagnetic valve 4, pressure sensor 3 for measuring the air pressure in its inside is installed on the top of box 1, water outlet pipe 6 that is communicated with its inside is installed on the side wall of box 1, water replenishing tank 5 is installed on the top, water replenishing tank 5 bottom is communicated with the inside of box 1 by pipeline, second electromagnetic valve 9 is installed on the pipeline, liquid level sensor 10 is installed on the bottom of box 1, controller 7 is installed on the side wall of box 1 and is electrically connected with pressure sensor 3, first electromagnetic valve 4, second electromagnetic valve 9, liquid level sensor 10.

[0017] Under normal conditions, first electromagnetic valve 4 and second electromagnetic valve 9 are in closed state, during the working process of solar water heater, the water in box 1 is heated, and the internal pressure increases, the pressure change in box 1 is monitored in real time by pressure sensor 3, if the pressure exceeds the set value of controller 7, controller 7 controls first electromagnetic valve 4 on exhaust pipe 2 to open, so that the air in box 1 is discharged, thereby balancing the pressure inside and outside box 1, preventing the internal pressure of box 1 from being too large to cause water leakage or damage; if the water level in box 1 is high, hot water will be discharged through exhaust pipe 2, since exhaust pipe 2 is arranged at the bottom of box 1, it can effectively prevent the discharged hot water from splashing everywhere, reducing the risk of corrosion of the outer wall of box 1 or metal parts during long-term use, and improving the service life; when the user uses hot water or the water temperature in box 1 decreases, the air pressure in box 1 will gradually decrease and produce negative pressure, if the pressure exceeds the set value of controller 7, controller 7 controls first electromagnetic valve 4 to open, so that the outside air enters box 1 through exhaust pipe 2, thereby balancing the pressure inside and outside box 1, preventing box 1 from being sucked; at the same time, the water level in box 1 is monitored in real time by liquid level sensor 10, when the water level drops below the set value, controller 7 controls second electromagnetic valve 9 to open, so that the water in water replenishing tank 5 is replenished to box 1 through the pipeline, keeping the water level stable, avoiding box 1 from being sucked due to negative pressure caused by water shortage; when the pressure value reaches the set range, controller 7 controls first electromagnetic valve 4 and second electromagnetic valve 9 to close, at this time, exhaust pipe 2 stops air intake or air outlet, which can reduce heat loss and further improve the heat preservation effect of the water heater.

[0018] The connecting assembly 8 comprises a gland 801 and a sealing ring 802, the bottom of the box 1 is provided with a connecting pipe 101 communicating with the inside of the box 1, an annular groove 102 is formed on the inner wall of the connecting pipe 101, an annular protrusion 201 with the same diameter as the annular groove 102 is arranged on the exhaust pipe 2, the sealing ring 802 is sleeved on the exhaust pipe 2 and abuts against the annular groove 102, the bottom surface of the sealing ring 802 abuts against the annular protrusion 201, external threads are formed on the connecting pipe 101, the gland 801 is sleeved on the connecting pipe 101 and is threadedly connected with the connecting pipe 101, and the inner wall of the gland 801 abuts against the end surface of the annular protrusion 201; the operator screws the gland 801, fixes the exhaust pipe 2 on the connecting pipe 101, ensures that the sealing ring 802 is closely attached to the annular groove 102, and thus good sealing effect is achieved, which helps to prevent the problem of water leakage or air leakage of the box 1 during use and facilitates disassembly, assembly and maintenance.

[0019] The water replenishing tank 5 is internally provided with a filter screen 501 for filtering impurities; the filter screen 501 can effectively filter impurities in water, avoids the problem of impurities blocking the exhaust pipe 2 during use, ensures normal operation of the hot water tank, and prolongs the service life of the hot water tank.

[0020] The outer circumferential surface of the gland 801 is provided with anti-skid lines; the anti-skid lines can increase the friction between the hand and the gland 801, easily rotate the gland 801, and are convenient to operate.

[0021] Working process:

[0022] In normal state, the first electromagnetic valve 4 and the second electromagnetic valve 9 are in closed state, in the working process of the solar water heater, the water in the box 1 is heated, and the internal pressure is increased, the pressure change in the box 1 is monitored in real time through the pressure sensor 3, if the pressure exceeds the set value of the controller 7, the controller 7 controls the first electromagnetic valve 4 on the exhaust pipe 2 to open, so that the air in the box 1 is discharged, thereby balancing the pressure inside and outside the box 1, preventing the water leakage or damage caused by the excessive internal pressure of the box 1; if the water level in the box 1 is high, the hot water will be discharged through the exhaust pipe 2, since the exhaust pipe 2 is arranged at the bottom of the box 1, the discharged hot water can be effectively prevented from splashing everywhere, reducing the risk of corrosion on the outer wall of the box 1 or metal parts during long-term use, and improving the service life; when the user uses hot water or the water temperature in the box 1 is reduced, the air pressure in the box 1 will gradually decrease and produce negative pressure, if the pressure exceeds the set value of the controller 7, the controller 7 controls the first electromagnetic valve 4 to open, so that the outside air enters the box 1 through the exhaust pipe 2, thereby balancing the pressure inside and outside the box 1, preventing the box 1 from being sucked in; at the same time, the water level in the box 1 is monitored in real time through the liquid level sensor 10, when the water level drops below the set value, the controller 7 controls the second electromagnetic valve 9 to open, so that the water in the water supplement tank 5 is supplemented into the box 1 through the pipeline, keeping the water level stable, avoiding the box 1 from being sucked in due to the negative pressure caused by water shortage; when the pressure value reaches the set range, the controller 7 controls the first electromagnetic valve 4 and the second electromagnetic valve 9 to close, at this time, the exhaust pipe 2 stops air intake or air outlet, which can reduce heat loss and further improve the heat preservation effect of the water heater.

[0023] Finally, it should be pointed out that the above preferred embodiments are only used to illustrate the technical solutions of the present application and are not limiting, although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined in the claims of the present application.

Claims

1. A vacuum proof solar water heating tank characterized by: The anti-vacuum solar water heater comprises a box body (1), an exhaust pipe (2), a pressure sensor (3), a first electromagnetic valve (4), a water supplement tank (5), a water outlet pipe (6), a controller (7), a connecting assembly (8), a second electromagnetic valve (9) and a liquid level sensor (10).

2. A vacuum proof solar water heating tank as claimed in claim 1, wherein: The connecting assembly (8) comprises a gland (801) and a sealing ring (802), the bottom of the box body (1) is provided with a connecting pipe (101) communicating with the inside of the box body (1), an annular groove (102) is formed in the inner wall of the connecting pipe (101), the exhaust pipe (2) is provided with an annular protrusion (201) with the same diameter as the annular groove (102), the sealing ring (802) is sleeved on the exhaust pipe (2) and abuts against the annular groove (102), the bottom surface of the sealing ring (802) abuts against the annular protrusion (201), the connecting pipe (101) is provided with an external thread, the gland (801) is sleeved on the connecting pipe (101) and is threadedly connected with the connecting pipe (101), and the inner wall of the gland (801) abuts against the end surface of the annular protrusion (201).

3. A vacuum proof solar water heating tank as claimed in claim 1 or 2, characterized in that: The water supplement tank (5) is provided with a filter screen (501) for filtering impurities.

4. A vacuum proof solar water heating tank as claimed in claim 2, wherein: The outer circumferential surface of the gland (801) is provided with anti-skid lines.

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