KR101713132B1 - Flow rate and temperature sensor heating control valve - Google Patents

Abstract

In the present invention, a heating control valve is installed in the water returning side of the hot water distributor, and a means for sensing the flow rate and the temperature is provided. By adopting the double control system for controlling the water temperature and flow rate, the heating cost can be substantially reduced, The present invention relates to a flow control valve for a flow rate and a temperature sensation, which does not require a separate assembly work in the field for installing the valve by integrally forming the sensing means and the temperature sensing means in the valve body.
In order to achieve the above object, the present invention provides a heating control valve having a flow rate sensing unit for detecting a flow rate of a heating control valve connected to a water return pipe or a supply pipe side of a hot water distributor, the heating control valve comprising an inlet and an outlet, A valve body having a first passage and a second passage between the inlet and the outlet; And a valve actuator for opening / closing the first passage with a regulating valve is provided at an upper portion of the valve body; An impeller chamber provided with an impeller of the flow rate sensing unit is provided between the second passage and the outlet; And a temperature sensing unit for sensing a temperature is provided above the second passage.

Description

Flow rate and temperature sensor heating control valve [0002]

More particularly, the present invention relates to a control valve for controlling flow rate and temperature, and more particularly, it relates to a control valve for controlling flow rate and temperature of a hot water distributor, And the temperature sensing means and the temperature sensing means are integrally made in the valve body, and the flow and temperature which require no separate assembling work in the field for installing the valve Knowledge heating control valve.

Generally, a heating system installed in a house or an apartment can control the temperature by opening and closing the heating water flowing into each room by controlling the individual electric valve attached to the hot water distributor by the temperature controller installed in each room. However, when the individual valves of a specific room are closed, the pump is circulated to increase the head height of the pump, so that the pressure of the supply pipe of the hot water distributor rises and the flow rate of the pump increases. Falling phenomenon occurs. In particular, in the case of central heating or district heating that calculates the heating cost by the total flow rate by household, there is a case that the heating cost saving effect by controlling the quantity of heating can not be quantified.

In view of this, the inventor of the present invention has proposed in Japanese Patent No. 1101772 that a flow sensor and a main valve are installed at the water returning side of the hot water distributor to return the flow rate to a required amount in the hot water distributor, whereby the differential pressure In addition, the maximum flow rate to be supplied to the hot water distributor is set so that only the required flow rate (the open number of the motor-operated valves) flows through the main valve The flow rate control system of the present invention has been proposed.

However, since the main valve and the flow sensor are installed separately, a process of assembling has been added. In view of this, the present inventor has proposed a main valve and a flow sensor integrated flow rate control system in Japanese Patent No. 1220997.

However, the above-mentioned Japanese Patent No. 1220997 discloses a structure in which a motor and a valve are connected to each other by a lead screw while the valve driver is installed in the valve body, and the valve is lifted and lowered by the rotation of the screw. Since the valve has to be separately provided for lifting and lowering the screw while rotating the screw, there is a problem in that the structure is complicated. In addition, since only the flow rate is controlled, when the flow rate is increased while the water temperature is low, the valve is operated to reduce the flow rate, which makes it difficult to adjust the desired heating temperature.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a heating control valve in a water heat exchanger of a hot water distributor, wherein a means for sensing a flow rate and a temperature is provided, It is possible to reduce the heating cost substantially by adopting the double control system that controls the flow rate and temperature. It is also possible to integrate the flow rate sensing means and the temperature sensing means into the valve body, To provide a heating control valve.

Another object of the present invention is to prevent the valve actuators from being interfered with each other by installing the valve actuators, the flow sensing means and the temperature sensing means in parallel on the valve body so that the valve actuators are installed higher than the flow sensing means, And a valve actuator and a flow rate sensing means are installed side by side in the valve body by controlling the control valve through a valve shaft and a spring so that the assembling property is improved.

It is a further object of the present invention to provide a flow control valve with a flow rate and a temperature sensed by incorporating a temperature sensing means for sensing the temperature inside the flow sensing means, have.

In order to achieve the above object, the present invention provides a heating control valve having a flow rate sensing unit for detecting a flow rate of a heating control valve connected to a water return pipe or a supply pipe side of a hot water distributor, the heating control valve including an inlet and an outlet, A valve body having a first passage and a second passage between the inlet and the outlet; And a valve actuator for opening / closing the first passage with a regulating valve is provided at an upper portion of the valve body; An impeller chamber provided with an impeller of the flow rate sensing unit is provided between the second passage and the outlet; And a temperature sensing unit for sensing a temperature is provided above the second passage.

According to the present invention, when the flow rate changes according to the opening degree of each room, the flow rate sensing means senses the flow rate to operate the mechanical valve driver. In addition, means for sensing the hot water temperature separately from the flow rate is provided. If the temperature is rapidly increased even if the flow rate is low, the mechanical valve driver is operated by detecting this. On the contrary, when the flow rate is fast but the temperature of the return water is low, the operation of the valve is stopped until the set temperature is reached.

Therefore, when a change in the flow rate is detected according to the amount of opening and closing of each room, the mechanical valve driver is operated and the mechanical valve driver is operated by sensing the change of the hot water temperature, so that the actual heating temperature can be precisely and doubly controlled .

In addition, since the means for sensing the temperature and the means for sensing the flow rate are integrally provided in the manufacturing process, the heating control valve is advantageous in that workability is improved by omitting a separate assembly process at the installation site. In addition, the means for detecting the flow rate incorporates a means for sensing the temperature, thereby minimizing the volume and improving the assemblability.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a conceptual diagram showing a state of installation of a heating control valve in an embodiment of the present invention
2 is a cross-sectional view of a heating control valve of an embodiment of the present invention
FIG. 3 is a plan view of the flow sensing part of the heating control valve of the embodiment of the present invention
4 is a cross-sectional view of a heating control valve of another embodiment of the present invention

1 to 3, an angle valve 62 and a driver 63 are installed in a row between a supply pipe 60 and a water return pipe 61 of the hot water distributor for each of a plurality of branch pipes in accordance with the number of chambers , And these drivers 63 are opened and closed by a control box 64 connected to the temperature regulator 65 of each room. And a heating control valve for limiting the maximum amount of heating water supplied to each room is provided on the return water distribution pipe (61) side.

The heating control valve includes an inlet 11 and an outlet 12 on both sides of the valve body 10 and a valve driver 30, a temperature sensing unit 50, and a flow rate sensing unit 40, respectively, do.

The valve body 10 is provided with a first passage 20 and a second passage 21 continuously between the inlet 11 and the outlet 12 and the second passage 21 and the outlet 12, And an impeller chamber 22 in which the impeller 41 of the flow rate sensing unit 40 is placed. A temperature sensor 51 of the temperature sensing unit 50 is mounted above the second outlet 12.

The valve driver 30 is provided with a control valve 38 for opening and closing the first passage 20 and a valve shaft 36 operated by a spring 37 is provided on the control valve 38 . The valve shaft 36 is provided at a distance from the valve body 10 such that the lower end of the valve driver 30 is at a height that does not interfere with the upper end of the flow sensing portion 40 .

The valve shaft 36 is moved up and down by the cam 35 to open and close the first passage 20. The cam 35 is rotated by the horizontal shaft 34 and the horizontal shaft 34 is connected to the motor 31 via the driven gear 33 and the drive gear 32 so that the control valve 38 is rotated .

The flow sensing part 40 protrudes from the upper end of the valve body 10. An impeller 41 rotating in proportion to the flow of the heating water is provided in the impeller chamber 22, ) Is injection-molded, an electric signal proportional to the rotation is detected by providing a magnetic body 42 which is integrally molded with the injection material. The flow rate signal detected in real time is sent to the flow rate detection section of the control box 64 and an adjustment signal according to the flow rate required in the control box 64 is sent to the valve driver 30, Respectively.

The temperature sensor 51 of the temperature sensing unit 50 is separated from the valve body 10 through the heat insulating tube 52. Therefore, since the surface temperature of the valve body 10 is not sensed but only the hot water temperature is sensed, the temperature detection is accurate.

In the heating control valve of the embodiment of the present invention configured as described above, since the valve actuator 30, the temperature sensing unit 50, and the flow rate sensing unit 40 are integrally provided in the valve body 10 during the manufacturing process, It is not necessary to individually assemble these means, and workability is improved. The lower end of the valve driver 30 is assembled away from the valve body 10 so as not to interfere with the upper end of the flow sensing portion 40. A valve shaft 36 and a spring 37 So that the control valve 38 is operated.

The operation of the embodiment of the present invention is as follows. First, the inlet (11) and the outlet (12) of the valve body (10) are connected to the water distribution pipe (61) side of the hot water distributor. At this time, the results are the same even when connected to the supply distribution pipe 60 side.

A valve driver 30 is installed on the upper part of the valve body 10 and sets the valve driver 30 by calculating a flow rate for each generation in the initial setting. The hot water flowing into each room flows into the inlet 11 of the valve body 10 and then flows through the second passage 21 through the first passage 20 opened by the valve driver 30. [ Lt; / RTI > At this time, the hot water temperature is detected by the temperature sensor 51 provided above the second passage 21 and the flow rate is detected by the impeller 41 provided between the second passage 21 and the outlet 12 .

If the flow rate to each room is rapidly increased, the flow rate is increased while the hot water temperature is constant, and the impeller 41 senses it and sends a control signal to the control box 64. At this time, the motor 31 of the valve driver 30 is operated in accordance with the control signal to actuate the cam 35 so that the control valve 38 is lowered. Therefore, when the valve shaft 36 is lowered by the operation of the cam 35, the opening of the first passage 20 becomes narrower due to the descent of the regulating valve 38, and the flow rate is regulated.

Also, when the temperature of the hot water is rapidly increased, the temperature sensor 51 senses the flow rate of the hot water and sends a control signal to the control box 64. At this time, the motor 31 of the valve driver 30 is operated in accordance with the control signal to actuate the cam 35 so that the control valve 38 is lowered. Therefore, when the valve shaft 36 is lowered by the operation of the cam 35, the opening of the first passage 20 becomes narrower due to the descent of the regulating valve 38, and the flow rate is regulated.

FIG. 4 is a cross-sectional view of a heating control valve according to another embodiment of the present invention, in which a temperature sensor 51 is embedded in the flow sensing unit 40. A temperature sensor 51 is installed in the center shaft 43 for rotating and supporting the impeller 41 inside the flow sensing unit 40. The impeller 41 has an opening 44 for exposing the center shaft 43 so that the temperature sensor 51 is brought into contact with hot water. A plurality of impellers 51 are radially provided between the upper plate 41a and the lower plate 41b and the upper plate 41a and the lower plate 41b are rotatably supported by the center shaft 43, The openings 44 are formed.

According to another embodiment of the present invention configured as described above, there is no need to separately provide temperature sensing means on the outside of the valve body 10, thereby reducing the number of assemblies and improving assembling performance. Further, the temperature sensing means is not exposed to the outside, do.

In this embodiment of the present invention, the central axis 43 for rotationally supporting the impeller 41 is essentially provided in the flow rate sensing unit 40. The central axis 43 serves not only to support the impeller 51, There is no other function. Therefore, the other embodiment of the present invention imparts the function to the center shaft 43, and the usability of the parts is improved.

A temperature sensor 51 is built in the center shaft 43. For this purpose, the center shaft 43 is formed in a hollow shape or the inside of the round bar is cut to form a hole, . The center shaft 43 in which the temperature sensor 51 is incorporated has an opening 44 formed in the impeller 41 so that the contact with the hot water can be smoothly performed.

10: valve body 11: inlet
12: outlet 20: first passage
21: second passage 22: impeller chamber
30: valve actuator 31: motor
32: driving gear 33: driven gear
34: horizontal axis 35: cam
36: valve shaft 37: spring
38: Control valve 40: Flow sensing unit
41: impeller 41a: top plate
41b: lower plate 42: magnetic substance
43: center shaft 44:
50: temperature sensing part 51: temperature sensor
52: Adiabatic tube

Claims (1)

A valve body connected to the water supply pipe or the supply pipe side of the hot water distributor is provided with an inlet and an outlet on both sides thereof and a first passage and a second passage are provided between the inlet and the outlet; And a valve actuator for opening / closing the first passage with a regulating valve is provided at an upper portion of the valve body; An impeller chamber in which an impeller of a flow rate sensing unit is embedded is provided between the second passage and the outlet of the valve body; Wherein the flow rate sensing unit includes a temperature sensor for sensing a temperature,
The valve actuator is provided at a lower portion of the valve body so as not to interfere with the upper end of the flow rate sensing unit.
The flow rate sensing unit includes a central shaft for rotatably supporting the impeller, wherein a temperature sensor is built in the center shaft;
A plurality of impellers are radially provided between an upper plate and a lower plate sandwiched between the upper and lower plates. The impeller is formed as an opening between the upper plate and the lower plate so that the central axis, in which the temperature sensor is built, Knowing the flow and temperature of the heating control valve.

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