Water heater constant temperature adjusting device capable of controlling temperature at rear end

Abstract

The utility model belongs to the technical field of valves, in particular to a water heater constant temperature adjusting device capable of controlling temperature at the rear end, which comprises a valve body and a controller, a hot water inlet channel, a cold water inlet channel, a water mixing cavity and a water outlet channel are arranged in the valve body, the hot water inlet channel is communicated with a water heater water outlet pipe, and the water mixing cavity is positioned between the hot water inlet channel and the cold water inlet channel. The water mixing cavity is communicated with the hot water inlet channel through a hot water opening, the water mixing cavity is communicated with the cold water inlet channel through a cold water opening, a valve element driven by a power device to adjust the sizes of the hot water opening and the cold water opening is further arranged in the valve body, the valve element comprises a first conical section, a first cylindrical section and a second conical section, and the first cylindrical section is located between the first conical section and the second conical section. A temperature sensor is arranged on the valve body, and the controller receives water temperature signals of the temperature sensor and controls the power device. According to the utility model, the water outlet temperature can be quickly and accurately adjusted in time, so that an accurate constant-temperature effect is achieved, and the phenomena of water cut-off temperature rise and sudden cold and hot of the outlet water are effectively avoided.

Description

Technical field:

[0001] The utility model belongs to the technical field of valves, in particular to a thermostatic regulating device for a water heater with rear-end temperature control. Background technology:

[0002] Current thermostats for water heaters on the market are controlled at the water inlet. This front-end temperature control method automatically regulates the amount of gas entering the combustion chamber based on the amount of cold water flowing in, achieving a constant temperature. However, this front-end temperature control approach has a drawback: if the water heater's back end experiences a water outage and temperature increase, or if water pressure fluctuations in the pipeline cause the water to fluctuate, the front-end temperature control method cannot quickly and efficiently adjust the back-end water outlet temperature. Consequently, the back-end water outlet still experiences this temperature increase and fluctuating phenomenon. Summary of the invention:

[0003] The purpose of the utility model is to provide a thermostatic regulating device for a water heater with rear-end temperature control, which can quickly and accurately adjust the outlet water temperature in a timely manner to achieve a precise constant temperature effect, and effectively avoid the phenomenon of water stoppage, temperature rise and fluctuating temperatures.

[0004] The utility model is achieved in this way:

[0005] A thermostatic regulating device for a water heater with rear-end temperature control, comprising a valve body and a controller, wherein a hot water inlet channel, a cold water inlet channel, a mixing chamber and a water outlet channel are provided in the valve body, wherein the hot water inlet channel is connected to the water outlet pipe of the water heater, and the mixing chamber is connected to the water outlet channel, wherein the mixing chamber is located between the hot water inlet channel and the cold water inlet channel, and the mixing chamber is connected to the hot water inlet channel through a hot water port, and the mixing chamber is connected to the cold water inlet channel through a cold water port, and the valve body is further provided with a valve driven by a power device to adjust the size of the hot water port and the cold water port. The valve core includes a conical section 1 for adjusting the size of the hot water outlet, a cylindrical section 1 for blocking the cold water outlet, and a conical section 2 for adjusting the size of the cold water outlet. The diameter of the conical section 1 gradually increases from the side of the hot water inlet channel to the side of the mixing chamber, and the diameter of the conical section 2 gradually increases from the side of the cold water inlet channel to the side of the mixing chamber. The cylindrical section 1 is located between the conical section 1 and the conical section 2. A temperature sensor for detecting the water temperature of the water outlet channel is provided on the valve body. The controller receives the water temperature signal from the temperature sensor and controls the power device.

[0006] In the above-mentioned thermostatic regulating device for water heater with rear-end temperature control, a cylindrical section 2 is provided on the side of the conical section 2 away from the cylindrical section 1, and the diameter of the cylindrical section 2 is not greater than the minimum diameter of the conical section 2.

[0007] In the above-mentioned thermostatic regulating device for the water heater with rear-end temperature control, a cylindrical section three is provided between the conical section one and the cylindrical section one, and the diameter of the cylindrical section three is equal to the maximum diameter of the conical section one and smaller than the diameter of the cylindrical section one.

[0008] In the above-mentioned thermostatic regulating device for a water heater with rear-end temperature control, the diameters of the hot water inlet and the cold water inlet are the same, the diameter of cylindrical section one is not larger than the diameter of the cold water inlet, and the diameter of cylindrical section three is smaller than the diameter of the hot water inlet.

[0009] In the above-mentioned thermostatic regulating device for a water heater with rear-end temperature control, a cylindrical section four is provided on the side of the conical section one away from the cylindrical section one, and the diameter of the cylindrical section four is not greater than the minimum diameter of the conical section one.

[0010] In the above-mentioned thermostatic regulating device for a water heater with rear-end temperature control, a moving rod is provided on the valve core, and the moving rod is driven by a power device to move axially.

[0011] In the above-mentioned thermostatic regulating device for a water heater with rear-end temperature control, the valve core can be mounted on the moving rod, or can be an integrated structure with the moving rod.

[0012] In the above-mentioned thermostatic adjustment device of the water heater with rear-end temperature control, the power device can be: the power device is a rotating motor, the end of the moving rod is provided with a plurality of convex teeth, the rotating shaft of the rotating motor is provided with an inner hole adapted to the moving rod, and the inner hole is provided with grooves whose number and position are adapted to the convex teeth, the rotating shaft of the rotating motor drives the moving rod to rotate through the convex teeth and the grooves, a fixed seat is fixedly installed in the valve body, the moving rod is passed through the fixed seat, the moving rod is provided with an external thread on the moving rod, and the fixed seat is provided with an internal thread adapted to the external thread, so that the moving rod will move axially during the rotation process and drive the valve core to move, and the moving rod moves axially relative to the inner hole of the rotating shaft of the rotating motor while rotating.

[0013] In the above-mentioned thermostatic regulating device for a water heater with rear-end temperature control, the power device may also be: the power device is a linear motor, and the linear motor drives the moving rod to move.

[0014] In the above-mentioned thermostatic regulating device for a water heater with rear-end temperature control, the power device may also be: the power device is an electric push rod, and the telescopic rod of the electric push rod drives the moving rod to move.

[0015] In the above-mentioned thermostatic regulating device for the water heater with rear-end temperature control, a water flow sensor for detecting the flow of the water outlet channel is provided on the valve body. The water flow sensor includes a shell arranged in the water outlet channel, a magnetic rotor arranged in the shell, and a Hall element that can sense the magnetic changes of the magnetic rotor. A Hall mounting seat is provided on the outside of the valve body, and the Hall element is arranged in the Hall mounting seat.

[0016] In the above-mentioned thermostatic regulating device for a water heater with rear-end temperature control, the Hall element is connected to a connector via a wire, a circuit board is provided on the wire, and a capacitor and a resistor are provided on the circuit board.

[0017] In the above-mentioned thermostatic regulating device for water heater with rear-end temperature control, a plurality of heat dissipation ribs are provided between the valve body and the Hall mounting seat, and a heat dissipation gap is formed between two adjacent heat dissipation ribs.

[0018] The outstanding advantages of the utility model compared with the prior art are:

[0019] 1. The utility model is arranged on the water outlet pipe of the water heater, and cold water is added to the water outlet end of the water heater for mixing, so that the outlet water temperature that meets the user's physical feeling can be adjusted promptly and quickly; at the same time, when the water supply at the rear end of the water heater stops and the temperature rises, or the pressure fluctuation of the tap water in the pipeline causes the phenomenon of alternating hot and cold water, the utility model detects the water temperature of the water outlet channel of the valve body through the temperature sensor, and the power device drives the valve core to adjust the size of the hot water outlet and the cold water outlet, so that the outlet water temperature can be adjusted promptly and accurately to achieve a precise constant temperature effect, effectively avoiding the phenomenon of water supply stopping and heating and alternating hot and cold water; at the same time, the valve core of the utility model includes a cylindrical section 1 for blocking the cold water outlet, so that when the utility model does not need to adjust the water temperature, the water flow rate can be adjusted according to the user's water consumption;

[0020] 2. The valve body of the utility model is provided with a water flow sensor for detecting the flow of the water outlet channel, which is convenient for obtaining the flow of the water outlet channel; the magnetic rotor arranged in the water outlet channel can stir the water in the water outlet channel to better mix the cold water and hot water; at the same time, the Hall element and the valve body are separated by the bottom plate of the Hall mounting seat, which effectively reduces the heat transfer from the valve body to the Hall element, thereby protecting the Hall element from being damaged by the high temperature of the valve body; at the same time, the circuit board equipped with capacitors and resistors is arranged on the wire, rather than being arranged on the valve body together with the Hall element, avoiding the higher temperature of the valve body, effectively protecting the capacitors and resistors from being damaged.

[0021] 3. A plurality of heat dissipation ribs are provided between the valve body and the Hall mounting seat of the utility model, and a heat dissipation gap is formed between two adjacent heat dissipation ribs, which further reduces the heat transfer from the valve body to the Hall element, effectively reduces the impact of the heat of the valve body on the Hall element, and greatly improves the service life of the Hall element. Description of the drawings:

[0022] Figure 1 It is a perspective view of the unpowered device of the utility model;

[0023] Figure 2 This is a cross-sectional view of the utility model without a power device and with the cold water inlet in a blocked state;

[0024] Figure 3 This is a cross-sectional view of the utility model without a power device and with the cold water outlet in a critical state;

[0025] Figure 4 This is a cross-sectional view of the utility model without a power device and with the cold water port in an open state;

[0026] Figure 5 It is a cross-sectional view of the utility model without a power device and with the cold water port in a fully open state.

[0027] Figure numerals: 1, valve body; 2, hot water inlet channel; 3, cold water inlet channel; 4, mixing water chamber; 5, water outlet channel; 6, hot water outlet; 7, cold water outlet; 8, valve core; 8a, conical section one; 8b, cylindrical section one; 8c, conical section two; 8d, cylindrical section two; 8e, cylindrical section three; 8f, cylindrical section four; 9, temperature sensor; 10, moving rod; 11, housing; 12, magnetic rotor; 13, Hall element; 14, wire; 15, connector; 16, circuit board; 17, Hall mounting seat. Specific implementation method:

[0028] The present invention is further described below with reference to specific embodiments. Figure 1 —5:

[0029] The thermostatic regulating device of the water heater with rear-end temperature control includes a valve body 1 and a controller. The valve body 1 is provided with a hot water inlet channel 2, a cold water inlet channel 3, a mixing chamber 4 and a water outlet channel 5. The hot water inlet channel 2 is connected to the water heater outlet pipe, the cold water inlet channel 3 is connected to the cold water pipe, the mixing chamber 4 is connected to the water outlet channel 5, the mixing chamber 4 is located between the hot water inlet channel 2 and the cold water inlet channel 3, the mixing chamber 4 is connected to the hot water inlet channel 2 through the hot water port 6, and the mixing chamber 4 is connected to the cold water inlet channel 3 through the cold water port 7. The valve body 1 is also provided with a power device to drive the hot water port 6 and the cold water port 7 to adjust the hot water port 6 and the cold water port 7. A small valve core 8, the valve core 8 includes a conical section 1 8a for adjusting the size of the hot water outlet 6, a cylindrical section 1 8b for blocking the cold water outlet 7, and a conical section 2 8c for adjusting the size of the cold water outlet 7. The diameter of the conical section 1 8a gradually increases from the side of the hot water inlet channel 2 to the side of the mixing water chamber 4, and the diameter of the conical section 2 8c gradually increases from the side of the cold water inlet channel 3 to the side of the mixing water chamber 4. The cylindrical section 1 8b is located between the conical section 1 8a and the conical section 2 8c. The valve body 1 is provided with a temperature sensor 9 for detecting the water temperature of the water outlet channel 5. The controller receives the water temperature signal of the temperature sensor 9 and controls the power device.

[0030] The working principle of this utility model is as follows: Figure 1-5As shown, the hot water from the water heater enters the mixing chamber 4 through the water heater outlet pipe, the hot water inlet channel 2, and the hot water outlet 6. The cold water from the cold water pipe enters the mixing chamber 4 through the cold water inlet channel 3 and the cold water outlet 7. After the hot water and cold water are mixed in the mixing chamber 4, they flow out through the outlet channel 5. The temperature sensor 9 detects the water temperature of the outlet channel 5 and transmits the water temperature signal to the controller. The controller controls the power device, thereby driving the valve core 8 to adjust the size of the hot water outlet 6 and the cold water outlet 7. When the temperature sensor 9 detects that the water temperature of the outlet channel 5 is too high, the power device drives the regulating valve core 6 to reduce the hot water outlet 6 and increase the cold water outlet 7, thereby reducing the amount of hot water and increasing the amount of cold water. When the temperature sensor 9 detects that the water temperature of the outlet channel 5 is too low, the power device drives the valve core 8 to increase the hot water outlet 6 and decrease the cold water outlet 7, thereby increasing the amount of hot water and reducing the amount of cold water.

[0031] The regulating working principle of valve core 8: Figure 2-5 As shown, when the cylindrical section 1 8b is located at the cold water inlet 7 and blocks the cold water inlet 7, the valve core 8 is moved to adjust the size of the hot water inlet 6, thereby adjusting the water flow rate of the water outlet channel 5, as shown in FIG. Figure 2 When the cylindrical section 8b is about to completely leave the cold water outlet 7, the cold water outlet 7 is in a critical state about to open, as shown Figure 3 As shown; when the second tapered section 8c is at the cold water inlet 7, when the valve core 8 moves toward the cold water inlet channel 3, the first tapered section 8a increases the hot water inlet 6, and the second tapered section 8c decreases the cold water inlet 7. When the valve core 8 moves toward the hot water inlet channel 2, the first tapered section 8a decreases the hot water inlet 6, and the second tapered section 8c increases the cold water inlet 7, until the first tapered section 8a completely enters the hot water inlet 6, and the flow rate of the hot water inlet 6 remains unchanged. Figure 4 shown.

[0032] The present invention is arranged on the outlet pipe of the water heater. Adding cold water to the outlet of the water heater can quickly and timely adjust the outlet water temperature to suit the user's body feeling. At the same time, the temperature sensor 9 detects the water temperature of the outlet channel 5 of the valve body 1, and the power device drives the valve core 8 to adjust the size of the hot water outlet 6 and the cold water outlet 7, so as to achieve precise constant temperature regulation. Therefore, when the water supply is cut off and the temperature rises at the rear end of the water heater, or when the pressure fluctuation of the tap water in the pipeline causes the water to fluctuate between hot and cold, the present invention can quickly and accurately adjust the outlet water temperature in time to achieve a precise constant temperature effect, effectively avoiding the water supply cutting off and the temperature rise and the fluctuating between hot and cold. At the same time, the valve core of the present invention includes a cylindrical section 8b that blocks the cold water outlet 7, so that when the present invention is not needed to adjust the water temperature, the water flow rate can be adjusted according to the user's water consumption.

[0033] Furthermore, a cylindrical section 8d is provided on the side of the second conical section 8c away from the first cylindrical section 8b, and the diameter of the second cylindrical section 8d is not greater than the minimum diameter of the second conical section 8c. When the second conical section 8c is completely away from the cold water inlet 7 and the second cylindrical section 8d is located at the cold water inlet 7, the cold water inlet 7 is fully opened, the valve core 8 is moved, and the flow rate of the cold water inlet 7 remains unchanged. The critical state of the second conical section 8c being completely away from the cold water inlet 7 is as follows: Figure 5 In this embodiment, the diameter of the second cylindrical segment 8d is equal to the minimum diameter of the second conical segment 8c.

[0034] In order to increase the distance between the conical section 1 8a and the cylindrical section 1 8b, that is, to increase the space of the mixing chamber 4, a cylindrical section 3 8e is provided between the conical section 1 8a and the cylindrical section 1 8b. The diameter of the cylindrical section 3 8e is equal to the maximum diameter of the conical section 1 8a and smaller than the diameter of the cylindrical section 1 8b.

[0035] Furthermore, the hot water inlet 6 and the cold water inlet 7 have the same diameter, the diameter of the cylindrical segment 1 8b is no larger than the diameter of the cold water inlet 7, and the diameter of the cylindrical segment 3 8e is smaller than the diameter of the hot water inlet 6. In this embodiment, the diameter of the cylindrical segment 1 8b is smaller than the diameter of the cold water inlet 7, but the gap between the two is very small, and the amount of cold water passing through is very small and can be ignored.

[0036] Furthermore, a cylindrical section 29 8f is provided on a side of the conical section 1 8a away from the cylindrical section 1 8b. The diameter of the cylindrical section 29 8f is no greater than the minimum diameter of the conical section 1 8a. In this embodiment, the diameter of the cylindrical section 29 8f is equal to the minimum diameter of the conical section 1 8a.

[0037] In order to facilitate the installation of the valve core 8, a moving rod 10 is provided on the valve core 8, and the moving rod 10 is driven by a power device to move along the axial direction.

[0038] Installation structure of valve core 8 and moving rod 10: valve core 8 is sleeved on moving rod 10 and fixed by screws.

[0039] In order to detect the water flow in the water outlet channel 5, the valve body 1 is provided with a water flow sensor for detecting the flow of the water outlet channel 5. The water flow sensor includes a housing 11 arranged in the water outlet channel 5, a magnetic rotor 12 arranged in the housing 11, and a Hall element 13 that can sense the magnetic change of the magnetic rotor 12. A Hall mounting seat 17 is provided on the outside of the valve body 1, and the Hall element 13 is arranged in the Hall mounting seat 17. The connector 15 is connected to the controller. Another function of the magnetic rotor 12 of the present invention is to stir the water in the water outlet channel 5 to better mix cold water and hot water. The Hall element 13 of the present invention is separated from the valve body 1 by the bottom plate of the Hall mounting seat 17, which effectively reduces the heat transferred from the valve body 1 to the Hall element 13, thereby protecting the Hall element 13 from being damaged by the high temperature of the valve body 1, thereby achieving full protection of the Hall element.

[0040] Furthermore, the Hall element 13 is connected to a connector 15 via a wire 14, and a circuit board 16 is provided on the wire 14. The circuit board 16 is provided with a capacitor and a resistor. The circuit board 16 with the capacitor and the resistor is arranged on the wire 14 instead of being arranged on the valve body 1 together with the Hall element 13, avoiding the higher temperature of the valve body 1, and effectively protecting the capacitor and the resistor from being burned.

[0041] In order to reduce the contact area and further reduce the heat transferred from the valve body 1 to the Hall element 13, a plurality of heat dissipation ribs 18 are provided between the valve body 1 and the Hall mounting seat 17, and a heat dissipation gap is formed between two adjacent heat dissipation ribs 18, which effectively reduces the impact of the heat of the valve body 1 on the Hall element 13 and greatly improves the service life of the Hall element 13.

[0042] Furthermore, the heat dissipation ribs 18 are provided on the valve body 1 and are an integral structure with the valve body 1 .

[0043] Furthermore, the controller is a microcomputer.

[0044] The above embodiment is only one of the preferred embodiments of the present invention and is not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made based on the shape, structure, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A thermostatic regulating device for a water heater with rear-end temperature control, characterized in that: The invention comprises a valve body (1) and a controller, wherein the valve body (1) is provided with a hot water inlet channel (2), a cold water inlet channel (3), a mixing chamber (4) and a water outlet channel (5), wherein the hot water inlet channel (2) is connected to the water outlet pipe of the water heater, and the mixing chamber (4) is connected to the water outlet channel (5), wherein the mixing chamber (4) is located between the hot water inlet channel (2) and the cold water inlet channel (3), wherein the mixing chamber (4) is connected to the hot water inlet channel (2) via a hot water port (6), and wherein the mixing chamber (4) is connected to the cold water inlet channel (3) via a cold water port (7), wherein the valve body (1) is further provided with a valve core (8) driven by a power device to adjust the size of the hot water port (6) and the cold water port (7), wherein the valve core (8) is provided with a valve core (8) driven by a power device to adjust the size of the hot water port (6) and the cold water port (7), wherein the valve core (8) is provided with a valve core (8) ) comprises a conical section (8a) for adjusting the size of the hot water outlet (6), a cylindrical section (8b) for blocking the cold water outlet (7), and a conical section (8c) for adjusting the size of the cold water outlet (7), wherein the diameter of the conical section (8a) gradually increases from the side of the hot water inlet channel (2) to the side of the mixing chamber (4), and the diameter of the conical section (8c) gradually increases from the side of the cold water inlet channel (3) to the side of the mixing chamber (4), and the cylindrical section (8b) is located between the conical section (8a) and the conical section (8c), and the valve body (1) is provided with a temperature sensor (9) for detecting the water temperature of the water outlet channel (5), and the controller receives the water temperature signal of the temperature sensor (9) and controls the power device.

2. The thermostatic regulating device for a water heater with rear-end temperature control according to claim 1, characterized in that: A cylindrical section 2 (8d) is provided on the side of the conical section 2 (8c) away from the cylindrical section 1 (8b), and the diameter of the cylindrical section 2 (8d) is not greater than the minimum diameter of the conical section 2 (8c).

3. The thermostatic regulating device for a water heater with rear-end temperature control according to claim 1, characterized in that: A cylindrical section three (8e) is provided between the conical section one (8a) and the cylindrical section one (8b), and the diameter of the cylindrical section three (8e) is equal to the maximum diameter of the conical section one (8a) and is smaller than the diameter of the cylindrical section one (8b).

4. The thermostatic regulating device for a water heater with rear-end temperature control according to claim 1, characterized in that: A cylindrical section four (8f) is provided on the side of the conical section one (8a) away from the cylindrical section one (8b), and the diameter of the cylindrical section four (8f) is not greater than the minimum diameter of the conical section one (8a).

5. The thermostatic regulating device for a water heater with rear-end temperature control according to claim 1, characterized in that: The valve core (8) is provided with a moving rod (10), and the moving rod (10) is driven by a power device to move in the axial direction.

6. The thermostatic regulating device for a water heater with rear-end temperature control according to claim 1, characterized in that: The valve body (1) is provided with a water flow sensor for detecting the flow of the water outlet channel (5), the water flow sensor comprising a housing (11) arranged in the water outlet channel (5), a magnetic rotor (12) arranged in the housing (11), and a Hall element (13) capable of sensing magnetic changes of the magnetic rotor (12); a Hall mounting seat (17) is provided on the outside of the valve body (1), and the Hall element (13) is arranged in the Hall mounting seat (17).

7. The thermostatic regulating device for a water heater with rear-end temperature control according to claim 6, characterized in that: The Hall element (13) is connected to a connector (15) via a wire (14); a circuit board (16) is provided on the wire (14); and a capacitor and a resistor are provided on the circuit board (16).

8. The thermostatic regulating device for a water heater with rear-end temperature control according to claim 6, characterized in that: A plurality of heat dissipation ribs (18) are provided between the valve body (1) and the Hall mounting seat (17), and a heat dissipation gap is formed between two adjacent heat dissipation ribs (18).

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