JP3081894B2 - Control valves for air conditioning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control valve for controlling the supply of a heat medium or a refrigerant used in an air conditioner.

[0002]

2. Description of the Related Art In an air conditioner, for example, as shown in FIG. 3, a heat medium or a refrigerant formed by an outdoor heat exchanger is supplied to an indoor heat exchanger.
Generally, the indoor side is cooled or heated by radiating or absorbing heat in the indoor side heat exchanger. In any case, the heat medium or the refrigerant must be supplied to the indoor heat exchanger. If the supply is controlled according to the indoor conditions, the heat medium or the refrigerant can be used efficiently. You can do it.

For this reason, conventionally, for example, a solenoid valve which is opened and closed according to a set room temperature is interposed in a supply pipe of a heat medium or a refrigerant at a position close to a heat exchanger on the room side. Thus, the supply of the heat medium or the refrigerant is controlled. However, this solenoid valve is turned on and off immediately in accordance with the set temperature, and has the advantage of quick response, but generates a loud noise when it is turned on and off. This is because the valve element is rapidly moved back and forth with respect to the valve seat. Such abnormal noise may disturb the living environment, and therefore should be eliminated altogether if possible.

The inventor of the present invention has conducted various studies on how to control the heat medium or the refrigerant in a situation where abnormal noise does not occur, and as a result, completed the present invention. It is.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for controlling the supply of a heat medium or a refrigerant used in an air conditioner. Is the occurrence of

It is an object of the present invention to provide a control valve having a simple structure, in which the supply of a heat medium or a refrigerant can be surely controlled, and in which no abnormal noise is generated during the operation. Is to do.

[0007]

In order to solve the above problems, the means adopted by the present invention will be described with reference to the reference numerals used in the embodiments. A control valve 100 that is interposed and controls the supply of a heat medium or a refrigerant according to a set temperature. The valve body 10 of the control valve 100 is
And fluid-tightly attached to the lube body 10, it faces the valve seat 13 of the connection pipe interposed in a test Kyukanro 50 accommodating port 10
a of the valve body 10
Valve support cylinder 21 having opening 24 communicating with inlet 11 side
And stored in the storage port 10a of the valve support
A sliding valve element 22 that moves in the direction of movement of the pindle 30;
The sliding valve body 22 is arranged so that it always comes out of the storage port 10a.
And a spring 23 disposed outside the sliding valve body 22.
A valve body 20 facing the valve seat 13 Te, as well as supporting lifting the valve body 20 at the distal end, the intermediate portion is housed valve body 22 and Ben支
Interposed is between the spindles 30 to be inserted into the lifting cylinder 21, the outer end of the spindle 3 0 the other end and the valve support cylinder 21
And a spring 31 that constantly urges the spindle 30 to the opposite side to the valve seat 13.
A susceptor 41 which is opposed to the other end of the gas spindles 30,
The controller 40 and a heater 43 for heating the susceptors 41 connected to the valve body 10, the room temperature is the set
When the temperature is within the constant temperature range, the power is supplied to the heater 43 of the controller 40.
To move the spindle 30 to the valve seat 13 side
The pressure of the heat medium or the refrigerant from the inlet 11 is
22 is applied to the surface opposite to the valve body 20 and the room temperature is set as described above.
When the temperature is out of the temperature range, the controller 40 supplies power to the heater 43.
Stop the power and move the spindle 30 to the opposite side of the valve seat 13.
The valve body 20 is separated from the valve seat 13 by being urged.
Control valve 10, wherein a call that was so
0 ".

[0008]

The operation of the control valve 100 according to the present invention configured as described above will be described in detail with reference to the drawings. First, the heat medium or the refrigerant is supplied to the valve body 10 as shown in FIG.
The valve body 10 is formed integrally with the mounting cap 44, and the inlet 11 and the outlet 1
At 2, the air conditioner is connected to the supply pipe 50 for connecting the heat exchangers and supplying the heat medium or the refrigerant, and the overall configuration is very compact. -ing

The controller 4 of the control valve 100
0 indicates that the heater 43 generates heat in response to a command from a temperature sensor provided in the indoor heat exchanger, for example.
The heat generated by the heater 43 causes the heat sensitive material in the heat sensitive body 41 to thermally expand. Naturally, the thermal expansion of the heat-sensitive material in the heat-sensitive body 41 is performed slowly, but this causes the actuator 42 to extend from the heat-sensitive body 41 and press one end of the spindle 30. FIG. 1 shows a state in which the spindle 30 is lowered downward in the figure against the urging force of the spring 31 when the actuator 42 of the controller 40 is operated.
The valve body 20 provided at the tip of the valve body 1 is the valve seat 1 on the valve body 10 side.
It is in contact with 3.

That is, in the control valve 100 shown in FIG.
This shows a state where the heat medium or the refrigerant supplied to the side does not flow to the outflow port 12 side, and the heat medium or the refrigerant does not flow to the indoor heat exchanger. Further, in the control valve 100 of the present invention , a sliding valve element 22 is disposed above the valve element 20 in the figure, and further on the upper surface side of the sliding valve element 22 in the figure, As shown by the arrow, the pressure of the heat medium or the refrigerant from the inflow port 11 is applied. That is, in this state, the spindle 30
We are urging of Beku above Dosu always depending on the spring 31
Have been. In other words, the force is applied to move the valve body 20 away from the valve seat 13. However, since the pressure of the heat medium or the refrigerant works to lower the sliding valve body 22, the control is performed. In cooperation with the pressing force of the actuator 42 of the vessel 40 on the spindle 30, the valve body 20
It is in a state of tight contact with 3.

Here, when the room temperature falls outside the set temperature range, the power supply to the heater 43 of the controller 40 is stopped. Then, the heat-sensitive material in the heat-sensitive body 41 gradually cools and gradually shrinks, and accordingly, the actuator 42 is gradually housed in the heat-sensitive body 41. Therefore, the pressing force of the actuator 30 on the spindle 30 is gradually reduced. Disappear. Thus, the spring 31 on the spindle 30 side
Is relatively increased, the spindle 30 is moved upward, and the valve body 20 is separated from the valve seat 13.

From the above, the heat medium or the refrigerant supplied to the inflow port 11 of the valve body 10 flows to the outflow port 12 through the opening 14 as shown by the arrow in FIG. The necessary heating or cooling is performed in the valve support cylinder 21 to which the heat medium or the refrigerant is supplied. Of course, during the operation during this time, there is no room for generating abnormal noise because the mechanical operation in the controller 40 is performed slowly, and the heat medium or the refrigerant is supplied to the heat exchanger gently.

When the room temperature falls within the set range, the heater 43 of the controller 40 is energized, and the actuator 42 gradually extends from the thermosensitive body 41, and slowly presses the end of the spindle 30. I will do it.
Thereby, the valve body 20 attached to the tip of the spindle 30
Gently abuts the valve seat 13 on the valve body 10 side, and the supply of the heat medium or the refrigerant to the heat exchanger side is stopped as described above. In this case, since the pressing of the spindle 30 by the actuator 42 of the controller 40 is performed in a slow state as described above, there is no portion where the control valve 100 suddenly comes into contact with each other. No sound is produced.

[0014]

Next, a control valve 10 according to the present invention will be described.
0 will be described below with reference to the embodiment shown in the drawings. FIG. 1 is a cross-sectional view of a control valve 100 according to the present invention, centering on a valve main body 10. The valve main body 10 is interposed in a supply pipe 50 for supplying a heat medium or a refrigerant. Things. That is, the lower right portion of the valve body 10 in the figure is an inlet 11, to which the heat medium or the refrigerant formed in the outdoor heat exchanger or the like shown in FIG. 3 is supplied. The supply line 50 is connected. Further, a portion of the valve body 10 opposite to the inflow port 11 is an outflow port 12, and the outflow port 12 is connected to a supply pipe 50 connected to a heat exchanger on the indoor side. is there. The inflow port 11 and the outflow port 12 are connection pipes described in the claims. A partition 1 having an opening 14 between the inlet 11 and the outlet 12.
3a is formed, and the periphery of the opening 14 of the partition wall 13a is a valve seat 13. The valve body 20 is disposed on the valve seat 13 so as to be able to advance and retreat, similarly to a general valve.

The valve body 20 has an inlet 11 and an outlet 12
And is integrally attached to the tip of a spindle 30 arranged in a direction perpendicular to the line connecting
Numeral 0 moves with respect to the axis of the valve support cylinder 21 provided in the valve body 10. The valve support cylinder 21 is mounted on the valve body 10 in a liquid-tight manner.
A controller 40 to be described later is mounted in a liquid-tight manner by the mounting cap 44 at the upper end in the drawing. Then, Oite the invention will be set slide valve body 22 is accommodated to move to the valve support cylinder 21 in the moving direction of the spindle 30, the sliding valve body 22, via the valve support cylinder 21 It is urged by a mounted auxiliary spring 23 in a direction to always come out of the valve support cylinder 21.

With respect to the illustrated upper surface of the sliding valve body 22,
Through an opening 24 formed in the valve support cylinder 21 and a hole on the valve support cylinder 21 side through which the spindle 30 passes, pressure of a heat medium or a refrigerant supplied to the inflow port 11 side is applied,
The sliding valve body 22 is urged by the pressure and the urging force of the auxiliary spring 23 so as to contact the valve body 20. The reason for this is that the closing by the valve body 20 is more reliable.

The spindle 30, the valve support cylinder 2 1 attached to the valve body 10, the auxiliary spring 2 3, and the valve seat 13
Against, which was assembled to be movable in the vertical direction in the drawing of FIG. 1, is interposed other end of the spring 3 1 is abutted at one end to the valve support cylinder 21 side between the spindle 30 Thus, it is always urged to move upward in the figure. The other end of the spindle 30 (FIG. 1)
Of the valve body 10 with the mounting cap 44.
It protrudes into the controller 40 attached to the side.

As shown in FIG. 2, the controller 40 accommodates the heat sensitive body 41 in the case main body, and controls the valve body so that the lower end of the actuator 42 protruding from the heat sensitive body 41 contacts the upper end of the spindle 30. 10. A heat-sensitive material (generally, paraffin) that expands thermally is sealed in the heat-sensitive body 41, and when the heat-sensitive material thermally expands, the heat-sensitive body 41 extends downward in FIG. is there. A heater 43 made of ceramic or the like is arranged near the heat-sensitive body 41, and power is supplied to the heater 43 from the outside.

In this embodiment, the operation of the heat sensitive element 41 is performed by energizing the heater 43. However, the entire controller 40 is arranged near the air inlet of the heat exchanger on the indoor side, and It may be implemented to operate according to the temperature of the air from the mouth.

[0020]

As described in detail above, in the present invention,
As exemplified in the above embodiment, “control valve 1
00 to the valve body 10 in a liquid-tight manner.
Attached to, has a housing opening 10a you face the valve seat 13 of the connection pipe interposed in a test Kyukanro 50, the housing opening
10a is connected to the inlet 11 side of the valve body 10
Valve support cylinder 21 having an opening 24,
Of the spindle 30 stored in the storage opening 10a of the spindle 30
Sliding valve element 22 that moves in the direction
A spring 23 which is always adjusted so that it comes out of the mouth 10a.
Is disposed outside the sliding valve body 22 and faces the valve seat 13.
Together that the valve body 20, when supported lifting the valve body 20 at the distal end
The intermediate part is inserted into the storage valve body 22 and the valve support cylinder 21.
The spindles 30, spindle 3 0 the other end and the valve
The spindle 30 is interposed between the support cylinder 21 and the outer end thereof.
With configuring the assumption that the valve seat 13 and a spring 31 for urging always the opposite side, the actuator 42 gas spindle 30 to advance and retreat by the pressure of the heat-sensitive material
A susceptor 41 which is opposed to the other end, a controller 40 including a heater 43 for heating the susceptors 41 and connected to the valve body 10, at room temperature is within the preset temperature range
When the power is supplied to the heater 43 of the controller 40,
0 to the valve seat 13 side, and from the inlet 11
And the pressure of the heat medium or the refrigerant with the valve element 20 of the sliding valve element 22
Hang on the opposite side, room temperature is out of the set temperature range
Power supply to the heater 43 of the controller 40 is stopped,
By biasing the handle 30 to the opposite side of the valve seat 13,
Ri, and this was to separate the valve body 20 from the valve seat 13 "
The present invention provides a control valve with a simple structure that can surely control the supply of a heat medium or a refrigerant, and of course, does not generate any abnormal noise during its operation. You can do it.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of a control valve 100 according to the present invention, focusing on a valve body 10;

FIG. 2 is a partially broken front view of a controller 40 used in the control valve 100.

FIG. 3 is a cross-sectional view schematically showing an overall configuration of an air conditioner using the control valve 100 and the like.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 control valve 10 valve body 11 inflow port 12 outflow port 13 valve seat 20 valve element 21 valve support cylinder 22 sliding valve element 23 auxiliary spring 30 spindle 31 spring 40 controller 41 thermosensitive element 42 actuator 43 heater 50 supply pipe

Claims (1)

(57) [Claims] 1. A heating medium or a cooling medium supply pipe.
Control the supply of the heat medium or the coolant according to the set temperature.
Control valve to be operated, the valve body of this control valveThe valve book
Attached to the body in a liquid-tight mannerInterposed in the supply line
Facing the valve seat in the connecting pipeThis storage opening has
Has an opening communicating with the inlet side of the valve body.
A valve support cylinder, which is stored in the storage opening of the valve support cylinder.
A sliding valve element that moves in the direction of spindle advance and retreat,
A spring that adjusts the valve so that it always comes out of the storage port
And disposed on the outside of the sliding valve body and opposed to the valve seat.
ValveBody and this valve body at the tipWhile holding
The slot is inserted between the storage valve body and the valve support cylinder.
Spindle and this spindleAnd the other end of the valve support cylinder
Between the end and the spindleWhat is the valve seat
With a spring that always biases the other side
And an actuator that moves back and forth by the pressure of the heat-sensitive material.
Heating body facing the other end of pindle and heating this heating body
A controller provided with a heater for performing
ContactThen, When the room temperature is within the set temperature range, the controller is turned off.
Power to the valve and move the spindle to the valve seat side.
And the pressure of the heat medium or refrigerant from the inflow port
Hung on the surface of the sliding valve body opposite to the valve body,
When the temperature is out of the set temperature range, the heater of the controller is
Stop the power supply and move the spindle away from the valve seat.
Side, the valve element is pulled from the valve seat.
I tried to release And a control valve characterized by: