CN201318820Y - Automatic regulating apparatus for solar energy water heater - Google Patents

Abstract

An automatic adjustment device for a solar water heater, a hot water pipe is connected to the lower part of the housing, a temperature sensor and an infrared heating rod extend into the inner cavity of the housing through the housing wall, and a temperature controller is installed on the upper part of the inner cavity of the housing , the inner cavity of the thermostat communicates with the inner cavity of the housing through the hot water inlet, and a cold water pipe is connected to the cold water inlet of the thermostat, and the cold water pipe extends out of the housing, and the second check valve is installed in the cold water pipe ; A water outlet pipe is connected to the top of the thermostat, which communicates with the inner chamber of the thermostat, and the water outlet pipe extends out of the housing. The utility model can automatically adjust the water temperature to keep the outlet water temperature constant, and the fluctuation of the outlet water temperature is only ±2°C, thereby avoiding burns and colds caused by too high or too low water temperature; when using the solar water heater in winter, the utility model The utility model can release hot water in less than 2 seconds, which is not only convenient to use, but also effectively improves the comfort of bathing, and avoids the waste of water resources, saving 3-6L of water each time.

Description

Solar water heater automatic adjustment device

technical field

The utility model relates to a solar water heater, in particular to an automatic adjustment device for the solar water heater.

Background technique

As a clean and renewable energy, solar energy has the advantages of no environmental pollution and no safety hazards, which are unparalleled by other energy sources. With the increasing tension of electricity and gas consumption across the country, solar water heaters are becoming more and more popular. Traditional solar water heaters install heat collecting tubes and water tanks on the roof of the building. The heat collecting tubes absorb the heat of the sun to increase the temperature of the water. Hot water is stored in the water tanks. When needed, hot water is introduced from outdoor hot water pipes. Indoor, for people to use. In summer, due to the long time and high intensity of sunlight, the water temperature in the water tank is too high, and the hot water cannot be used directly. It is necessary to rely on the hot water pipe to connect with the tap water pipe, and the water temperature is adjusted by the mixing valve, so that the temperature of the outlet water fluctuates greatly. Frequent adjustments are often required during use, which is not only troublesome, but also greatly reduces the comfort of bathing. In winter, especially in the south, due to the short illumination time and low intensity, the hot water in the water tank often cannot reach the temperature required by people. At this time, the heater in the water tank works to heat the hot water to the required temperature first. Then it is introduced into the room by the outdoor hot water pipe. Because the outdoor hot water pipe is long and the outdoor temperature is low, a lot of heat will be lost due to heat radiation when transferring hot water, so that when the water is discharged, the cold water will be released first, and the hot water will be released after 1 minute, so people use it in winter. It is very inconvenient when bathing, and colds are prone to occur. Not only the comfort of bathing is poor, but also the waste of water resources has been caused.

Utility model content

The technical problem to be solved by the utility model is to provide an automatic adjustment device for a solar water heater that can discharge water at a constant temperature.

The technical scheme of the utility model is as follows: an automatic adjustment device for a solar water heater, a hot water pipe is connected to the lower part of the housing, the hot water pipe communicates with the inner cavity of the housing, and a first one-way valve is installed in the hot water pipe , the first one-way valve ensures that the hot water flows into the housing through the hot water pipe in one direction; the temperature sensor and the infrared heating rod extend into the inner cavity of the housing through the housing wall, and a temperature control is set on the upper part of the inner cavity of the housing. The control knob of the thermostat is located outside the shell, and there are hot water inlet and cold water inlet at the bottom of the thermostat, wherein the inner cavity of the thermostat communicates with the inner cavity of the shell through the hot water inlet, and the thermostat The cold water inlet of the controller is connected with a cold water pipe, and the cold water pipe protrudes out of the housing, and a second one-way valve is installed in the cold water pipe, and the second one-way valve ensures that the cold water flows into the thermostat in one direction through the cold water pipe; A water outlet pipe is connected to the top of the thermostat, and the water outlet pipe communicates with the inner cavity of the thermostat, and the water outlet pipe extends out of the casing, and a water outlet valve is installed on the water outlet pipe.

The utility model is installed indoors as a whole, the hot water pipe is connected with the water tank of the solar water heater on the roof, the cold water pipe is connected with the running water pipe, the hot water in the water tank flows into the housing through the hot water pipe for storage, and the first and second one-way valves are activated. To prevent water backflow, the required hot water temperature can be set through the control knob. When the water temperature in the shell is higher than the set temperature, the hot water entering the thermostat through the hot water inlet is mixed with the cold water entering the thermostat through the cold water pipe, so as to reach the preset temperature. The water outlet pipe emits constant temperature hot water. When the water temperature in the shell does not reach the set temperature, the temperature sensor detects the temperature signal, and at this time the infrared heating rod can be controlled to work, to heat and sterilize the water in the shell until the water temperature reaches the set temperature, and the thermostat The cold water inlet is closed, and what is released by opening the water outlet valve is also constant temperature hot water.

Compared with the traditional technology, the utility model has small fluctuations in the outlet water temperature, does not need to be adjusted repeatedly during use, and is very simple to operate; when used in winter, hot water can be released in less than 2 seconds, which is not only convenient to use, but also avoids water resources. waste, and can also reduce the possibility of bathers catching a cold, effectively improving the comfort of bathing.

The above thermostat is composed of a control knob, a connecting rod, a cylinder, a first piston, a thermal expansion spring, a second piston and a compression spring. The cylinder is a tubular structure with both ends closed, and a water outlet is set in the center of the top surface of the cylinder. , the water outlet is connected to the water outlet pipe, the bottom surface of the cylinder is provided with a hot water inlet and a cold water inlet, the hot water inlet and the cold water inlet are separated on the left and right sides of the water outlet, and the cold water inlet is connected to the cold water pipe; the first The piston and the second piston are installed in the barrel and are also separated on the left and right sides of the water outlet. The first and second pistons are connected by thermal expansion springs. The space between the first and second pistons forms a mixing chamber. The mixing chamber It communicates with the cold water pipe and the water outlet pipe, and the mixing chamber also communicates with the inner cavity of the shell through the hot water inlet; the connecting rod and the compression spring are separated on the left and right sides of the mixing chamber, and one end of the connecting rod is connected with the first piston, and the The other end of the rod passes through the cylinder and protrudes out of the housing, and a control knob is installed at the end of the protruding part. One end of the compression spring is connected with the second piston, and the other end of the compression spring is fixed on the cylinder.

The first piston cooperates with the hot water inlet to control the opening of the hot water inlet. When the control knob is turned, the control knob drives the first piston to move left and right in the cylinder through the connecting rod to adjust the opening of the hot water inlet. The temperature of the hot water. The second piston cooperates with the cold water inlet to control the opening of the cold water inlet, and under the action of the thermal expansion spring and the compression spring, the opening of the cold water inlet can be automatically adjusted. When the water temperature in the shell is higher than the set temperature, the hot water entering the mixing chamber of the barrel through the hot water inlet makes the thermal expansion spring heated and lengthened, and the thermal expansion spring pushes the second piston to the right. At this time, the compression spring is compressed, and the cold water inlet Open, cold water enters the mixing chamber through the cold water pipe, and mixes with hot water to reach the preset temperature. If the temperature of the hot water entering the mixing chamber of the cylinder rises further, the length of the thermal expansion spring will increase when heated, and the displacement of the second piston to move to the right will increase, and the opening of the cold water inlet will become larger, and the incoming cold water will increase. more; when the temperature of the hot water entering the mixing chamber of the barrel decreases (higher than the set temperature), the length of the thermal expansion spring is reduced when heated, and the displacement of the second piston to move to the right is also reduced, and the opening of the cold water inlet is also reduced. The temperature becomes smaller, and the cold water entering decreases. The water temperature in the mixing chamber can be kept constant like this, and the constant temperature hot water can be discharged from the water outlet pipe by opening the water outlet valve. When the water temperature in the casing does not reach the set temperature, the temperature sensor detects the temperature signal, and at this time the infrared heating rod can be controlled to work, to heat and sterilize the water in the casing until the water temperature reaches the set temperature, and the cold water in the cylinder The inlet is closed, the water outlet valve is opened, and the constant temperature hot water in the casing is released from the water outlet pipe through the mixing chamber.

On the left side of the hot water inlet, there is a first rib fixed to the inner wall of the cylinder; between the hot water inlet and the water outlet, there is a second rib, which is also connected to the water outlet. The inner wall of the cylinder is fixed. The left ends of the first rib and the second rib are positioned to the first piston to limit the left-right displacement of the first piston; the right end of the second rib is positioned to the second piston to limit the leftward displacement of the second piston. Under the action of the first and second protruding ribs, the reliability of temperature regulation by the temperature controller is better.

The temperature sensor is connected to the input end of the controller through wires, the controller is powered by a power supply, and the output end of the controller is connected to the infrared heating rod. When the temperature sensor senses that the water temperature is lower than the set temperature, the controller can control the infrared heating rod to work, which is easy to control and has a high degree of automation.

The high-level output terminal of the above-mentioned controller is connected to the static contact through a wire, and the movable contact matched with the static contact is fixed on the magnetic ring, and the static contact and the movable contact form a switch, and the movable contact passes through The wire is connected to one end of the infrared heating rod, and the other end of the infrared heating rod is connected to the low-level output end of the controller through the wire; the magnetic ring is looped on the water outlet pipe, and the iron block matched with the magnetic ring is located In the pipe, the iron block is connected with the lower end of the spring, the upper end of the spring is connected with the positioning block, and the positioning block is fixed with the inner wall of the water outlet pipe. As long as the water outlet valve is opened and the water flows out from the outlet pipe, the water impacts the iron block and moves upward, and the spring is compressed. Under the action of magnetism, the magnetic ring slides upward, making the moving contact leave the static contact, and the switch formed is disconnected. Cut off power to the infrared heating wand for added water safety.

The above-mentioned shell is spherical, and a sewage discharge pipe is installed at the bottom of the shell. The sewage discharge pipe communicates with the inner cavity of the shell, and a sewage discharge valve is installed on the sewage discharge pipe. Open the drain valve, and the scale and impurities in the spherical housing can be completely discharged through the drain pipe.

The shell is composed of an inner metal layer, a polyurethane layer and an outer metal layer, the polyurethane layer is located between the inner and outer metal layers, and the polyurethane layer plays the role of heat preservation.

Beneficial effects: the utility model has the characteristics of novel concept, simple and reliable structure, and easy implementation. It can automatically adjust the water temperature to keep the outlet water temperature constant, and the fluctuation of the outlet water temperature is small, only ± 2 ° C, thereby avoiding excessive water temperature. or scald and cold caused by too low; when using the solar water heater in winter, the utility model can release hot water in less than 2 seconds, which is not only convenient to use, but also effectively improves the comfort of bathing, and avoids the waste of water resources. It can save 3-6L water each time.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the temperature controller in the utility model.

Fig. 3 is the schematic circuit diagram of the utility model.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

As shown in FIG. 1 , the housing 1 is a spherical hollow structure, which can be formed by fastening the upper and lower halves. The shell 1 is a three-layer composite structure, from the inside to the outside are the inner metal layer 1a, the polyurethane layer 1b and the outer metal layer 1c, the inner and outer metal layers 1a, 1b can be made of stainless steel or other equivalent materials, and the polyurethane layer 1b starts The role of heat preservation. A sewage discharge pipe 28 is vertically installed at the bottom of the housing 1 , and the sewage discharge pipe 28 communicates with the inner cavity of the housing 1 , and a sewage discharge valve 29 is installed on the sewage discharge pipe 28 . Open the drain valve 29, and the scale and impurities in the spherical housing 1 can be completely discharged through the drain pipe 28.

As can be seen from Fig. 1, a hot water pipe 2 is connected to the left side of the bottom of the housing 1, and the hot water pipe 2 is connected with the water tank (not shown) of the solar water heater on the roof, and connected with the bottom of the housing 1. The inner cavities are connected, and a first one-way valve 3 is installed in the hot water pipe 2, and the first one-way valve 3 ensures that the hot water flows into the housing 1 through the hot water pipe 2 in one direction. There is a via hole on the right side of the lower part of the housing 1. The infrared heating rod 5 passes through the via hole and extends obliquely upward into the inner cavity of the housing 1. The water is heated and sterilized. A mounting hole is provided on the left side of the upper part of the housing 1, and the temperature sensor 4 passes through the mounting hole and extends obliquely downward into the inner cavity of the housing 1. The temperature sensor 4 senses the temperature signal of the water in the housing 1, so as to control When does the infrared heater 5 work.

As shown in Figure 1 and Figure 2, a thermostat is set on the upper part of the inner cavity of the housing 1. The thermostat consists of a control knob 6, a connecting rod 7, a cylinder 8, a first piston 9, a thermal expansion spring 10, a second A piston 11 and a compression spring 12 are formed, wherein the cylinder 8 is a tubular structure with both ends closed, arranged horizontally and transversely, and fixed to the inner wall of the housing 1 . A water outlet is set in the center of the top surface of the cylinder body 8, and the water outlet is connected to the water outlet pipe 18, and the water outlet pipe 18 extends vertically upwards outside the housing 1, and a water outlet valve 19 is installed on the water outlet pipe 18, and the water outlet valve 19 is opened. The water in the casing 1 can be released. A hot water inlet 13 and a cold water inlet are provided on the bottom surface of the cylinder body 8. The hot water inlet 13 and the cold water inlet are separated on the left and right sides of the water outlet, and the cold water inlet is connected to the cold water pipe 16, and the cold water pipe 16 extends out of the housing to the right. 1, and a second one-way valve 17 is installed in the cold water pipe 16, and the second one-way valve 17 ensures that the cold water flows through the cold water pipe 16 into the barrel 8 in one direction.

It can be seen from Fig. 1 and Fig. 2 that the first piston 9 and the second piston 11 are installed in the barrel 8, and are also separated on the left and right sides of the water outlet. The first piston 9 cooperates with the hot water inlet 13 to control the heat. The opening of the water inlet 13; the second piston 11 cooperates with the cold water inlet to control the opening of the cold water inlet. The first and second pistons 9 and 11 are connected by a thermal expansion spring 10, and the space between the first and second pistons 9 and 11 forms a mixing chamber 14, which communicates with a cold water pipe 16 and an outlet pipe 18 , the mixing chamber 14 also communicates with the inner cavity of the housing 1 through the hot water inlet 13 . The connecting rod 7 and the compression spring 12 are separated on the left and right sides of the mixing chamber 14, one end of the connecting rod 7 is connected with the first piston 9, and the other end of the connecting rod 7 passes through the left end surface of the cylinder 8 and extends out of the housing 1, a control knob 6 is installed at the end of the protruding part, and when the control knob 6 is rotated, the control knob 6 drives the first piston 9 to move left and right in the cylinder body 8 through the connecting rod 7, so as to adjust the opening of the hot water inlet 13. One end of the compression spring 12 is connected to the second piston 11 , and the other end of the compression spring 12 is fixed on the inner wall at the right end of the barrel 8 .

It can be further seen from FIG. 1 and FIG. 2 that a first rib 15 is provided on the left side of the hot water inlet 13 , and the first rib 15 is fixed to the inner wall of the cylinder body 8 . A second rib 15' is arranged between the hot water inlet 13 and the water outlet, and the second rib 15' is also fixed to the inner wall of the cylinder body 8. The left ends of the first rib 15 and the second rib 15' are positioned to the first piston 9 to limit the displacement of the first piston 9 moving left and right. When the first piston 9 moves to the limit position to the right, the hot water inlet 13 is completely sealed; when the first piston 9 moves to the limit position to the left, the hot water inlet 13 can be fully opened. The right end of the second rib 15' is positioned to the second piston 11 to limit the displacement of the second piston 11 moving to the left. When the second rib 15' moved to the limit position to the left, it just in time completely sealed the cold water inlet.

As shown in Fig. 1 and Fig. 3, temperature sensor 4 is connected with the input end of controller 20 by wire, and controller 20 is powered by power supply 21, and the high level output end of controller 20 is connected with static contact 22 by wire, and The movable contact 23 matched with the static contact 22 is fixed on the magnetic ring 24, the static contact 22 and the movable contact 23 form a switch, and the movable contact 23 is connected with one end of the infrared heating rod 5 through a wire, and the infrared heating The other end of the rod 5 is connected with the low level output terminal of the controller 20 through a wire. The magnetic ring 24 is looped on the water outlet pipe 18, and the iron block 25 matched with the magnetic ring 24 is located in the water outlet pipe 18. The iron block 25 is connected with the lower end of the spring 26, and the upper end of the spring 26 is connected with the positioning block 27. The positioning block 27 is fixed to the inner wall of the water outlet pipe 18 .

The working principle of the utility model is as follows:

The hot water in the solar water heater water tank flows into the housing 1 through the hot water pipe 2 for storage, and the required hot water temperature can be set through the control knob 6 . When the water temperature in the casing 1 is higher than the set temperature, the hot water entering the barrel mixing chamber 14 through the hot water inlet 13 makes the thermal expansion spring 10 heated and lengthened, and the thermal expansion spring 10 pushes the second piston 11 to the right, at this time The compression spring 12 is compressed, the cold water inlet is opened, and the cold water enters the mixing chamber 14 from the cold water pipe 16, and mixes with the hot water to reach a preset temperature. If the temperature of the hot water entering the cylinder mixing chamber 14 increases further, the thermal expansion spring 10 will be heated and elongated, and the displacement of pushing the second piston 11 to move to the right will increase, and the opening of the cold water inlet will become larger. When the temperature of the hot water entering the cylinder mixing chamber 14 decreases (higher than the set temperature), the thermal expansion spring 10 is heated and elongated, and the displacement of the second piston 11 to move to the right is also reduced. Smaller, the opening of the cold water inlet becomes smaller, and the amount of cold water entering decreases. The water temperature in the mixing chamber 14 can be kept constant like this, and the constant temperature hot water can be released from the water outlet pipe 18 by opening the water outlet valve 19 . When the water temperature in the housing 1 does not reach the set temperature, the temperature sensor 4 detects a temperature signal and transmits it to the controller 20, and the controller 20 controls the infrared heating rod 5 to work to heat and sterilize the water in the housing 1 , until the water temperature reaches the set temperature, the power is cut off, the cold water inlet of the cylinder body 8 is closed, the water outlet valve 19 is opened, and the constant temperature hot water in the housing is discharged from the water outlet pipe 18 through the mixing chamber 14.

In the utility model, as long as the water outlet valve 19 is opened, when the water outlet pipe 18 flows outward, the water flow impacts the iron block 25 and moves upward, the spring 26 is compressed, and under the action of magnetism, the magnetic ring 24 slides upward to make the movable contact 23 leave Static contact 22, the switch that forms is disconnected, cuts off the power supply to infrared heating rod 5, to improve the safety of water.

Claims (7)

1, a kind of automatic regulating device for solar water heater, it is characterized in that: be connected to hot-water line (2) in the bottom of housing (1), this hot-water line (2) communicates with the inner chamber of housing (1), and first check valve (3) is installed in the hot-water line (2), and first check valve (3) guarantees that hot water is through hot-water line (2) one-way flow in housing (1); Temperature sensor (4) and infrared ray heating rod (5) pass in the inner chamber that housing wall extend into housing (1), top at housing (1) inner chamber is provided with temperature controller, the control handle of this temperature controller (6) is positioned at the outside of housing (1), have hot water inlet and cooling water inlet in the bottom of temperature controller, wherein the inner chamber of temperature controller is communicated with by the inner chamber of hot water inlet with housing (1), cooling water inlet at temperature controller is connected to cold water pipe (16), this cold water pipe (16) stretches out outside the housing (1), and second check valve (17) is housed in the cold water pipe (16), and second check valve (17) guarantees that cold water is through cold water pipe (16) one-way flow in temperature controller; Be connected to outlet pipe (18) at the top of described temperature controller, this outlet pipe (18) communicates with the inner chamber of temperature controller, and outlet pipe (18) stretches out outside the housing (1), and on outlet pipe (18) outlet valve (19) is housed.

2, automatic regulating device for solar water heater according to claim 1, it is characterized in that: described temperature controller is by control handle (6), connecting rod (7), cylindrical shell (8), first piston (9), thermal expansion spring (10), second piston (11) and compression spring (12) constitute, its middle cylinder body (8) is the tubular structure of closed at both ends, central authorities at cylindrical shell (8) end face set out the mouth of a river, this delivery port and outlet pipe (18) join, hot water inlet (13) and cooling water inlet are offered in the bottom surface of cylindrical shell (8), the separation of hot water inlet (13) and cooling water inlet is in the left and right sides of delivery port, and cooling water inlet and cold water pipe (16) join; Described first piston (9) and second piston (11) are installed in the cylindrical shell (8), also live apart in the left and right sides of delivery port, connect by thermal expansion spring (10) between first, second piston (9,11), space between first, second piston (9,11) forms mixing bunker (14), this mixing bunker (14) communicates with cold water pipe (16) and outlet pipe (18), and mixing bunker (14) also is communicated with the inner chamber of housing (1) by hot water inlet (13); Described connecting rod (7) and compression spring (12) separation are in the left and right sides of mixing bunker (14), one end of connecting rod (7) is connected with first piston (9), the other end of connecting rod (7) passes cylindrical shell (8) and stretches out outside the housing (1), control handle (6) is installed in the end of extension, described compression spring (12) one ends are connected with second piston (11), and the other end of compression spring (12) is fixed on the cylindrical shell (8).

3, automatic regulating device for solar water heater according to claim 2 is characterized in that: be provided with first fin (15) in the left side of described hot water inlet (13), this first fin (15) is fixed with the inwall of cylindrical shell (8); Be provided with second fin (15 ') between hot water inlet (13) and delivery port, this second fin (15 ') is also fixed with the inwall of cylindrical shell (8).

4, according to claim 1 or 2 or 3 described automatic regulating device for solar water heater, it is characterized in that: described temperature sensor (4) is connected by the input of lead with controller (20), controller (20) is by power supply (21) power supply, and the output of controller (20) is connected with infrared ray heating rod (5).

5, automatic regulating device for solar water heater according to claim 4, it is characterized in that: the high level output of described controller (20) is connected with stationary contact (22) by lead, the movable contact (23) that cooperates with stationary contact (22) is fixed on the magnet ring (24), described stationary contact (22) forms switch with movable contact (23), described movable contact (23) is connected by the end of lead with infrared ray heating rod (5), and the other end of infrared ray heating rod (5) joins by the low level output of lead and controller (20); Described magnet ring (24) kink is on outlet pipe (18), the iron block (25) that matches with magnet ring (24) is positioned at outlet pipe (18), this iron block (25) is connected with the lower end of spring (26), the upper end of spring (26) is connected with locating piece (27), and locating piece (27) is fixed with the inwall of outlet pipe (18).

6, automatic regulating device for solar water heater according to claim 1, it is characterized in that: described housing (1) is for spherical, blow-off pipe (28) is installed in bottom at housing (1), and this blow-off pipe (28) communicates with the inner chamber of housing (1), and on the blow-off pipe (28) blowoff valve (29) is housed.

7, according to claim 1 or 6 described automatic regulating device for solar water heater, it is characterized in that: described housing (1) is made of inner metal layer (1a), layer of polyurethane (1b) and outer metal level (1c), and layer of polyurethane (1b) is positioned between the inside and outside metal level (1a, 1c).

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