WO2008148290A1

WO2008148290A1 - Mixture adjusting constant temperature water valve

Info

Publication number: WO2008148290A1
Application number: PCT/CN2008/000804
Authority: WO
Inventors: Zhaokeng Pan
Original assignee: Zhaokeng Pan
Priority date: 2007-06-04
Filing date: 2008-04-18
Publication date: 2008-12-11
Also published as: CN101070925A; CN100516605C

Abstract

A mixture adjusting constant temperature valve is mainly installed at the outlet or the terminal outlet of the water storage water heater or the water heater in central system, so to mix the cold and hot water to the pre-set temperature quickly. Out of the valve body(14) there's rotating drive(12), its output shaft(4) passes through the round hole of the valve body and then is fixedly connected to the pendulum of water temperature adjusting block(8); On both sides of the reversed water temperature adjusting block(8) there're soft sealed pads(3,9) which can joint cold and hot water adjusting joints(2,11) respectively; There's mixture cavity(15) between the water temperature adjusting block(8) and mixture water tube(7); And also in the empty cavity(13) of the valve body or in the mixture water tube(7) there's temperature sensor(6) which is connected with the end of input of the constant temperature controller outside.

Description

Hybrid regulating thermostatic water valve

The present invention relates to the field of liquid temperature regulating valves, and more particularly to a mixing regulating thermostatic water valve for controlling the temperature of a mixed liquid by randomly adjusting the mixing ratio of liquids at different temperatures. Background technique

The Chinese Patent Gazette discloses a hybrid regulating valve whose invention name is "Rotor-type liquid temperature mixing regulating valve" and authorized bulletin number "CN2348217Y". The mixing regulating valve uses an adjusting block to swing between the end faces of the cold and hot water inlets. The method can effectively prevent the accumulation of hot water scale and affect the work and even cause the failure phenomenon, and solve the problem of scale accumulation of the electronically controlled thermostatic water valve. With the rotor type electromagnet, it is possible to quickly adjust the ratio of cold and hot water in a certain range to achieve the purpose of temperature adjustment. However, the adjustment block in the above technical solution is a single block structure, which is inevitably an integral rigid part. Since the end face of the adjusting block is adjusted to fit the wide mouth, the water temperature adjusting block and the adjusting wide mouth are the same as the rigid structure. There are various cumulative tolerance stacks, which are impossible to fully fit in practical applications. Even in the case where the machining precision of each component is very high and the assembly requirements are very strict, it is impossible to make the end face of the adjusting block cold and hot. When the end face of the water pipe outlet is in close contact, it always maintains close contact and achieves the effect of approaching the seal. Therefore, even if the manufacturing cost is increased, it is difficult to adjust when the preset temperature is close to the temperature of the cold water or hot water, and the result is that the general water temperature and the temperature are advanced. The minimum temperature difference of water temperature is above 2-3 °C, which will cause energy waste in practical applications, especially for small storage water heaters, which will be equivalent to the effective storage volume. When the regulating valve stops working, such as cold and hot water pressure, a check valve must be installed to avoid turbulence between the two. At the same time, because the rotor type electromagnet is used as the rotating drive element, its speed is too fast, which may cause instantaneous overshoot, and the effluent water temperature is unstable. The swing angle is inversely proportional to the torque, that is, the swing angle is large, the torque is small, and the swing angle is small. The torque is large. When the swing angle is small, the adjustment flow is limited. When the torque is small, if the pressure difference between cold and hot water is large, it is difficult to adjust. Therefore, the balance between the swing angle and the torque will make the hybrid control valve adapt to cold and heat. The adaptability of the water pressure difference and the adjustment of the water volume is correspondingly restricted. In addition, the above patent does not have a special mixing chamber after the cold and hot water enter the valve casing. Since the water flow rate from the regulating port is sometimes as high as ten meters per second, the cold and hot water flow over a distance of 60 mm or more. Only when the temperature sensor is too close to the cold or hot water port, the temperature of the water detected by the temperature sensor is different from that of the cold and hot water, so that the temperature control of the water can not be achieved. If the temperature sensor is far from the cold and hot water ports, the volume of the valve body is relatively large. Summary of the invention

The object of the present invention is to provide a hybrid regulating thermostatic water valve with relatively low processing precision requirements, convenient assembly, and a preset water temperature which can be close to or even zero temperature difference between cold water or hot water inlet water. When the pressure difference between cold and hot water is relatively large, the temperature can be stably adjusted in the case of a small discharge flow, and the volume is small, and the flow rate of the regulated water flow is large.

The technical solution proposed by the present invention is as follows: A hybrid regulating thermostatic water valve comprising a valve body, a water temperature adjusting block disposed in the wide body, a rotary drive disposed outside the valve body and configured to drive the water temperature adjusting block to swing, a temperature sensor for detecting the temperature of the water and a thermostat controller for receiving the temperature sensing signal of the temperature sensor and sending a control signal to the rotary actuator, wherein the left and right sides of the wide body are respectively provided with coaxial cold water pipes and hot water pipes. The valve body is further provided with a mixing water pipe. The central axis of the mixing water pipe is perpendicular to the central axis of the cold water pipe and the hot water pipe, and the cold water pipe, the hot water pipe and the mixed water pipe penetrate each other and form an inner cavity in the valve body, and the water temperature adjusting block is arranged. In the inner cavity and driven by the rotary drive, the hot water regulating port of the hot water pipe and the cold water regulating port of the cold water pipe are swung, and the output shaft of the rotary drive is sealed through the circular hole of the valve body wall and the water temperature is adjusted. a pendulum fixed connection of the block, wherein a water mixing chamber between the water temperature regulating block and the mixing water pipe is disposed in the inner cavity, and two of the water temperature adjusting blocks are Bonding surfaces are provided with means for adjusting the soft cold and hot water port seal opening adjustment.

According to the technical solution of the present invention, the rotary drive is a DC gear motor or a stepping motor.

According to the technical solution of the present invention, the water temperature adjusting block is a reverse cone or a wedge shape.

According to the technical solution of the present invention, the water outlet of the mixing water pipe is provided with a flow guiding portion partially closing the water outlet, wherein the inner cavity is provided with a mixed flow partition between the water temperature adjusting block and the flow guiding portion, and the mixed flow partition and the mixed flow partition The inner wall of the inner cavity jointly forms a flow guiding hole on one side of the flow guiding portion, and a mixed water chamber is formed between the mixed flow partition plate and the flow guiding portion, and the water flowing into the inner cavity by the cold water pipe and the hot water pipe is mixed flow partitioning plate After being guided to the diversion hole, it flows into the mixing chamber and then flows into the mixing water pipe.

According to the technical solution of the present invention, at least one spoiler is vertically mounted on the side of the mixed flow partition facing the water mixing chamber. According to the technical solution of the present invention, a rubber seal ring is disposed between the output shaft of the rotary actuator and the circular hole provided in the valve body wall.

According to the technical solution of the present invention, the rotary drive is provided with a positioning ring concentric with the output shaft.

According to the technical solution of the present invention, the maximum swing angle of the water temperature adjusting block ranges from 12° to 45°.

According to the technical solution of the present invention, the temperature sensor is sealed and mounted on the valve body through a rubber gasket.

According to the technical solution of the present invention, the temperature sensing head of the temperature sensor is disposed in the mixing water pipe.

According to the technical solution of the present invention, the temperature sensing head of the temperature sensor is disposed in the water mixing chamber and located at a position opposite to the air guiding port. According to the technical solution of the present invention, two spoilers are vertically arranged on the side of the mixed flow partition facing the water mixing chamber, and the temperature sensor of the temperature sensor is disposed in the water mixing chamber and located in two blocks. Between the spoilers.

During operation, when the mixing water pipe 7 is turned on, the cold water pipe 1 and the hot water pipe 10 respectively have cold and hot water flowing into the inner cavity 13 of the wide body 14, and after mixing, flow through the temperature sensing head of the temperature sensor 6, when the water is discharged When the temperature is higher than the preset temperature, the water temperature adjusting block 8 is swung by the rotary actuator 12 to the hot water regulating port 11 until the ratio of the cold water and the hot water is just equal to the temperature of the mixed water and the preset temperature. When the temperature of the mixed water is still higher than the preset temperature, the water temperature adjusting block 8 continues to swing toward the hot water regulating port 11 until the rubber gasket 9 completely closes the hot water regulating port 11, and the outlet water temperature is equal to the cold water inlet temperature. That is, when the temperature difference is zero; on the contrary, when the mixed water temperature is lower than the preset temperature, the water temperature adjusting block 8 swings to the cold water regulating port 2, and the adjustment process is continuous and automatic until the rubber gasket 3 is pressed against the cold water regulating port 2, and the cold water is put It is completely closed, and the outlet water temperature is equal to the hot water inlet temperature. When the mixing water pipe 7 is turned off, such as when there is a pressure difference between the water flows in the cold and hot water pipes 1, 10, the flowing water flow between the cold and hot water pipes 1, 10 causes the water temperature and the temperature sensed by the temperature sensor 6 to be preset. If the temperature does not match, the final water temperature adjustment block 8 will completely seal the cold water regulating port 2 or the hot water regulating port 11, that is, the cold water or the hot water inlet does not add a check valve, and the cold water and hot water will not be used. The cavities 13 are turbulent in each other. If the rotary drive 12 uses a DC gear motor or a stepping motor, the swing angle and the torque of the water temperature adjusting block 8 can be increased, that is, the diameter of the cold and hot water regulating ports can be increased to increase the regulating flow rate, and can be cooled, Use when the hot water pressure difference is large. Since the spoiler in the mixing chamber 15 can make the cold and hot water mix well in the mixing chamber 15, the temperature sensing head of the temperature sensor 6 can be installed in the mixing chamber 15, compared to the water temperature adjusting block. The body volume of the valve body can be made small in the case where the length of the water mixing pipe 7 between the temperature sensor 6 is lengthened or the bending is performed a plurality of times.

Compared with the prior art, the present invention has the following remarkable effects:

(1) The invention adopts a structure in which a rubber gasket is respectively installed on both sides of the water temperature adjusting block, and the water temperature regulating block and the cold water regulating port or the hot water regulating port can be made without too high processing precision or complicated assembly process. The fit is completed until it is completely sealed, thereby reducing the manufacturing cost and also making the difference between the temperature of the incoming cold water or hot water and the preset temperature zero.

(2) When there is a pressure difference between the inflowing cold and hot water, even if it is greater than 0.3Mpa, the shutdown of the mixing water pipe will not cause the cold and hot water in the valve body to turbulent.

(3) When a DC gear motor or a stepping motor is used as the rotary drive, since the maximum swing angle of the water temperature adjustment block 8 can reach 45°, the flow rate of the same diameter adjustment port can be greatly increased, and the DC gear motor or stepping The torque of the motor can be more than 10 times larger than the torque of the rotor-type electromagnet driven by the same current. Therefore, the diameter of the regulating port can be appropriately increased to greatly increase the regulating flow rate of the water valve and the difference between the cold and hot water pressures. For large occasions, for example, the difference between cold and hot water pressure can be greater than 0.3Mpa, which is more than three times that of a rotor type electromagnet.

(4) Using a DC geared motor or a stepper motor as the rotary drive, it is not required to provide the same position The current saves power and does not cause temperature instability caused by the use of a rotor type electromagnet as a driving member.

(5) Using a DC geared motor or stepper motor as the rotary drive, it can work smoothly in the range of l min to 30 L/min.

(6) Since the mixing chamber 15 is provided in the inner cavity 13, the cold and hot water can be sufficiently mixed in the mixing chamber, so that the temperature sensing head of the temperature sensor 6 can be directly installed in the mixing chamber 15. , so that the volume of the wide body is greatly reduced.

The invention is mainly installed at the water outlet end of the water heater or the central water supply port of the water storage type water heater or the central hot water supply system, and rapidly mixes the cold water and the hot water to the predetermined outlet water temperature. DRAWINGS

The accompanying drawings are included to provide a further understanding of the invention The principle. The same reference numerals in the drawings denote the same parts. In the drawing:

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the structure of a mixing and adjusting constant temperature water-saving embodiment of the present invention.

Figure 2 is a cross-sectional view taken along line A-A of the embodiment of the hybrid thermostatic water valve of Figure 1.

detailed description

The preferred embodiments of the present invention are described in detail with reference to the accompanying drawings.

Referring to Fig. 1 and Fig. 2, a mixed water temperature thermostat controller includes a valve body 14, a water temperature adjusting block 8, a rotary actuator 12, a temperature sensor 6, and peripherals.

The left and right sides of the valve body 14 are respectively provided with a cold water pipe 1 and a hot water pipe 10 on the same central axis, and the central axis of the mixing water pipe 7 of the valve body 14 is perpendicular to the central axis of the cold and hot water pipes 1, 10. The cold water pipe 1, the hot water pipe 10, and the water mixing pipe 7 penetrate each other in the valve body 14 to form an inner cavity 13.

The inner cavity 13 is provided with a water-sinking or wedge-shaped water temperature adjusting block 8 at the center thereof, the axis of the rotating shaft is located on the central axis, and the water temperature regulating block 8 can be in the cold water regulating port 2 of the cold water pipe 1 and the heat of the hot water pipe 10. The water regulating ports 11 are swung between each other, and the soft water seals 3, 9 for fitting the cold water regulating ports 2 and the hot water regulating ports 11 are respectively fixed to both side faces of the water temperature adjusting block 8. By designing the size of the water temperature adjusting block 8, the maximum swing angle of the water temperature adjusting block 8 can be made between 12° and 45°.

A mixing chamber 15 between the water temperature regulating block 8 and the mixing water pipe 7 is disposed in the inner cavity 13. The mixing chamber 15 can have various structural forms. According to a preferred embodiment, a mixed flow partition 151 is disposed between the water temperature regulating block 8 and the mixing water pipe 7 in the inner cavity 13, and the mixed flow partition 151 and the mixed water pipe 7 are Forming a mixing chamber 15, and mixing the partition 151 with the inner space A flow guiding hole 18 is formed together between the inner walls of the cavity 13. As indicated by the arrows in Fig. 2, the water flowing into the inner cavity 13 from the cold water pipe 1 and the hot water pipe 10 is blocked by the mixed flow partition 151, forcing the water to flow from the flow guiding hole 18 into the mixing chamber 15, in the mixing chamber 15 After mixing, the mixture flows into the mixing water pipe 7, so that the cold water and the hot water can be sufficiently mixed in the valve body 14 before flowing into the mixing water pipe 7.

At least one spoiler 152 is vertically mounted on the side of the mixed flow partition 151 facing the water mixing chamber 15, and preferably, two blocks are vertically arranged on the side of the mixed flow partition 151 facing the water mixing chamber 15. Spoiler 152. The spoiler 152 can further forcibly further mix the cold water and the hot water flowing into the mixing chamber 15 to sufficiently mix the cold water and the hot water in the valve body 14, and the temperature sensor 6 in which the temperature sensing head is disposed in the water mixing chamber 15 The detected water temperature can be more accurate.

The temperature sensor 6 is sealed on the valve body 14 by a rubber gasket 61, and the temperature sensing head is housed in the mixing chamber 15 in the cavity 13 of the valve body or in the mixing water pipe 7.

The water inlet 16 of the mixing water pipe 7 is provided with a flow guiding portion 19 which may be a semicircular plate and partially close the water inlet 16. The flow guiding portion 19 can cooperate with the mixed flow partition 151 so that the mixing of the cold water and the hot water in the mixing chamber 15 is more sufficient. When the temperature sensing head of the temperature sensor 6 is located in the mixing chamber 15 and between the two spoilers 152, the flow guiding portion 19 can also function to direct the water to the temperature sensing head.

The rotary actuator 12 is fixed on the outer side of the valve body 14, and the output shaft 4 is connected to the center of the water temperature adjusting block 8 through a circular hole in the valve wall of the valve body 14, and between the output shaft 4 and the circular hole of the valve wall of the wide body 14. A rubber gasket 122 is mounted, and a positioning ring 121 concentric with the output shaft 4 is mounted on the rotary actuator 12, and the water temperature adjusting block 8 is fastened to the output shaft 4 by screws 5. When the water temperature adjusting block 8 swings around the output shaft 4 to the end point, it is respectively fitted to the cold water regulating port 2 or the hot water regulating port 11.

The rotary drive 12 can be a DC geared motor or a stepper motor. According to a preferred embodiment, the rotary drive 12 uses a DC geared motor with a reduction ratio of 300, the swing angle of the water temperature adjustment block 8 is 36°, and the diameters of the circular cold and hot water adjustment ports 2, 1 1 are respectively D7 mm. At the time of O.lMPa water pressure, the mixed water discharge flow rate can reach 15 liters per minute. Since the water temperature regulating block 8 is pressed to the circular cold and hot water regulating port 2, the radial pressure of the water is higher than 20 cattle, so that the cold and hot water pressure difference can be normally operated when the pressure difference is greater than 0.3Mpa.

When the water outlet switch of the mixing water pipe 7 is opened, cold and hot water respectively flow from the cold water pipe 1 and the hot water pipe 10, and when the temperature signal transmitted from the temperature sensor 6 to the peripheral thermostat controller is higher than the preset temperature, the temperature is constant. The controller supplies current to the DC geared motor 12, and the decelerated shaft 4 drives the water temperature adjusting block 8 to swing toward the hot water regulating port 11, so that the gap between the rubber gasket 9 and the hot water regulating port 11 is reduced, and the rubber gasket 3 and the rubber gasket 3 The gap of the cold water regulating port 2 is increased to change the ratio of the water to the hot water, and then the mixture is thoroughly mixed in a very short distance through the mixing chamber 15. When the ratio of the outlet water of the cold and hot water is just such that the temperature of the mixed water is the same as the preset temperature, the water temperature adjusting block 8 stops swinging. When the temperature of the mixed water is still higher than the preset temperature, the water temperature adjusting block 8 will always swing toward the hot water regulating port 11 until the rubber gasket 9 is pressed against the hot water regulating port. 11. Stop the hot water effluent completely. Conversely, when the temperature of the mixed water is lower than the preset temperature, the water temperature adjusting block 8 swings toward the cold water regulating port 2, and if the temperature of the mixed water is still lower than the preset temperature, the water temperature adjusting block 8 - swings in the direction of the cold water regulating port 2 Until the rubber gasket 3 is pressed against the cold water regulating port 2, the cold water is completely blocked.

When the outlet of the mixing water pipe 7 is closed, if there is a temperature difference between the cold and hot water flowing from the cold and hot water pipes 1, 10, the mutual turbulence of the cold water and the hot water will change the water temperature in the cavity 13 in the wide body, when the temperature When the temperature sensing head of the sensor 6 senses that the water temperature does not coincide with the preset temperature, the rubber gasket 9 or 3 on the water temperature adjusting block 8 will eventually press against the hot water or cold water regulating port 11 or 2 until the cold and hot water cannot flow. .

The positioning ring 121, which is mounted on the rotary drive 12 and concentric with the rotary shaft 4, enables the water temperature adjustment block 8 to be accurately positioned.

Claims

Rights request

1. A mixing and adjusting thermostatic water valve, comprising a valve body (14), a water temperature adjusting block (8) disposed in the wide body (14), disposed outside the valve body (14) and used for driving the water temperature adjusting block (8) a oscillating rotary actuator (12), a temperature sensor (6) for detecting the temperature of the water and water, and a thermostat controller that receives the temperature sensing signal of the temperature sensor (6) and sends a control signal to the rotary actuator (12), the valve body ( 14) The left and right sides are respectively provided with a coaxial cold water pipe (1) and a hot water pipe (10), and the valve body (14) is also provided with a mixing water pipe (7), a central axis of the mixing water pipe (7) and cold water. The central axis of the tube (1) and the hot water pipe (10) are vertical, and the cold water pipe (1), the hot water pipe (10) and the mixed water pipe (7) penetrate each other and form an inner cavity in the valve body (14) ( 13), the water temperature adjusting block (8) is disposed in the inner cavity (13) and driven by the rotary drive (12) in the hot water regulating port (11) of the hot water pipe (10) and the cold water pipe (1) Swing between the cold water adjustment port (2), the output shaft (4) of the rotary drive (12) is sealed through the valve body (14) valve The circular hole is fixedly connected to the pendulum of the water temperature regulating block (8), and is characterized in that: the inner cavity (13) is provided with a water mixture between the water temperature regulating block (8) and the mixing water pipe (7). The cavity (15) and the two sides of the water temperature adjusting block (8) are respectively provided with soft gaskets (3, 9) for fitting the cold water regulating port (2) and the hot water regulating port (11).

2. The hybrid regulating thermostatic water valve according to claim 1, wherein: said rotary drive (12) is a DC geared motor or a stepper motor.

3. The mixing and regulating thermostatic water valve according to claim 1, wherein: said water temperature adjusting block (8) is a reverse cone or a wedge shape.

4. The mixing and regulating constant temperature water wide according to claim 1, wherein: the water outlet (16) of the mixing water pipe (7) is provided with a flow guiding portion (19) partially closing the water outlet (16), The inner cavity (13) is internally provided with a mixed flow partition (151) between the water temperature regulating block (8) and the flow guiding portion (19), and the mixed flow partition (151) and the inner wall of the inner cavity (13) are formed together. a flow guiding hole (18) on one side of the flow guiding portion (19), a mixed water chamber (15) is formed between the mixed flow partition plate (151) and the flow guiding portion (19), and the cold water pipe (1) and the hot water pipe (10) The water flowing into the inner cavity (13) is guided to the diversion hole (18) by the mixed flow partition (151), flows into the mixing chamber (15), and then flows into the mixing water pipe (7).

The hybrid regulating thermostatic water valve according to claim 4, characterized in that at least one spoiler (152) is vertically mounted on the side of the mixed flow partition (151) facing the mixing chamber (15).

6. The hybrid regulating thermostatic water valve according to claim 1, wherein: the output shaft (4) of the rotary actuator (12) and the round hole provided in the wide wall of the valve body (14) are rubber-filled. Sealing ring (122).

7. The hybrid regulating thermostatic water valve according to claim 1, wherein: said rotary actuator (12) is provided with a positioning ring (121) concentric with the output shaft (4).

The hybrid regulating thermostatic water valve according to claim 1, characterized in that: the maximum swing angle of the water temperature adjusting block (8) ranges between 12° and 45°.

The hybrid regulating thermostatic water valve according to claim 1, wherein the temperature sensor (6) is sealed and fitted to the valve body (14) through a rubber gasket (61).

10. The mixing and regulating thermostatic water valve according to claim 1, wherein the temperature sensing head of the temperature sensor (6) is disposed in the mixing water pipe (7).

11. The mixing and regulating thermostatic water valve according to claim 4, wherein: the temperature sensing head of the temperature sensor (6) is disposed in the mixing chamber (15) and is located opposite the air guiding port (18). .

12. The mixing and regulating thermostatic water valve according to claim 11, wherein: two spoilers (152) are vertically arranged on a side of the mixed flow partition (151) facing the water mixing chamber (15). The temperature sensing head of the temperature sensor (6) is disposed in the mixing chamber (15) and between the two spoilers (152).