JPH0979592A - Temperature control valve for natural convection type radiator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a natural convection type radiator temperature control valve wherein cold air entering through a window is prevented from lowering toward a floor surface even when the room temperature reaches set temperature. SOLUTION: When the room temperature reaches a desirous temperature set by operation of an operating part 19, an opening/closing valve 24 is moved to a position where a circulation fluid with 20 to 30% of a maximum flow rate flows without bringing the flow rate of the circulation fluid to zero. Hereby, even when the room temperature reaches the set temperature, a convection heat can be produced which rises cold air entering through a window without raising the room temperature, and hence the temperature near a floor surface can be prevented from being lowered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature control valve for a natural convection type radiator used in a natural convection type radiator for heating by circulating a circulating fluid heated by a heating device for heating. .

[0002]

2. Description of the Related Art Conventionally, a panel convector, a radiator or the like for circulating a circulating fluid such as water or an antifreezing liquid heated by a heating device for heating such as a heating boiler to radiate the heat of the circulating fluid to heat the room Natural convection radiator 10
1, a temperature control valve 102 for a natural convection type radiator that controls the inflow of the circulating liquid into the radiator 101 at room temperature was used. This is a circulation pipe 1 that constitutes a circulation path for circulating liquid.
03, the opening and closing valve is moved and opened and closed by utilizing the volume change of the thermowax that expands and contracts with the change in room temperature of the flow port formed in the blocking wall in the connecting pipe 104 connecting the radiator 03 and the radiator 101. The desired room temperature can be set by operating the operating member 105 while controlling the flow rate of the circulating liquid by means of, and when the room temperature reaches the set temperature, the flow port is fully closed by the open / close valve.

When selecting the heating capacity or size of the radiator 101, first, as the heating capacity of the radiator 101, the monthly average of the daily minimum temperature is referred to and the room is heated to the desired temperature at the minimum daily temperature. The one that can heat up is selected,
In addition, the heat dissipation capability is selected to be as long as possible as long as the width of the window 106 among those having a heating capability slightly larger than the calculated load value.

This is a natural convection type radiator 101 of this type.
Is generally installed under the window 106, so that the convective heat 107 generated from the upper surface of the radiator 101 causes the window 10 to move.
The cold air 108 entering from 6 is pushed up toward the ceiling of the room, and the cold air 108 entering from the window 106 is transferred to the window 10.
The temperature of the floor is prevented from lowering by preventing the temperature from falling from 6 toward the floor of the room, and the temperature of the interior of the room becomes uneven by warming the cold air 108 once pushed up while it cools down. There was no heating.

[0005]

By the way, in this prior art, the volume change of expansion and contraction of the thermowax does not follow linearly even if the temperature changes rapidly, but changes gradually. It took five minutes from the full opening to full closing of the flow opening, and gradually opened and closed over one minute from the full closing to full opening.

[0006] In addition, the operation of the operating member on which the desired set temperature and the heating level corresponding thereto are calibrated, that is, the desired temperature is set, once the graduation is adjusted to a certain graduation, the graduation is usually used without moving. And
If heating is performed when the temperature difference between the outside temperature and the room temperature is small in that state, the heating capacity of the radiator that can sufficiently heat even at the daily minimum temperature becomes excessive, and the circulation port is fully closed, and it is fully closed. The time will be much longer than the time it is fully open.

Therefore, since the circulating liquid does not flow into the radiator, convective heat is not generated, and the cold air entering through the window gradually falls toward the floor surface, resulting in a long fully closed state. The temperature drops sharply and the temperature difference with the upper part of the room increases, and the temperature in the range of 10 cm to 15 cm from the floor where the temperature control valve is installed also drops, which causes the thermowax. There was a drawback that the temperature near the floor became considerably low by the time the liquid circulated and the circulation port was opened and the circulating liquid again flowed into the radiator.

[0008]

The present invention focuses on this point and solves the above-mentioned drawbacks. In particular, the constitution is of natural convection type heat radiation for radiating heat by circulating a circulating fluid which is heated. In the temperature control valve for natural convection type radiator that controls the flow rate of the circulating fluid of the reactor by the ambient temperature, it changes according to the ambient temperature and the on-off valve that opens and closes the flow port formed in the blocking wall in the connecting pipe. Equipped with a temperature sensitive element that moves the on-off valve by the displacement, and an operation member that operates and sets a desired temperature and moves the on-off valve accordingly, and when the ambient temperature reaches the set temperature, the maximum flow rate 20-30% of
The on-off valve is moved to the position where the flow rate is.

[0009]

Operation: Operating member 19 for temperature control valve for natural convection radiator
Is operated to set the desired room temperature and circulate the heated circulating fluid through the natural convection radiator, the room temperature rises due to heat radiation from the radiator, and when the set room temperature is reached, the flow port 30
The opening / closing valve 24 is located at a position where a flow rate of 20 to 30% of the maximum flow rate when fully opened flows, so that room temperature does not rise and convective heat generated from the radiator prevents cold air from entering through the window. Push up. Then, if the room temperature further rises in this state, the thermowax 4 further expands and the opening / closing valve 24 is moved to completely close the flow port 30 to zero the flow rate of the circulating liquid.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A temperature control valve for a natural convection type radiator according to the present invention will be described with reference to an embodiment shown in the drawings. Reference numeral 1 denotes a temperature-sensing body, and a bellows member 3 having a cylindrical shape with a bottom and a side circumferential portion formed in a bellows shape is fixed in the temperature-sensing body 1 of an insertion port 2 provided at a substantially center of a bottom surface. The space formed by the bellows member 3 and the inside of the temperature sensitive body 1 is filled with the thermowax 4 whose volume changes with temperature change. Reference numeral 5 denotes an actuating rod, which is substantially cylindrical and has a collar portion 6 formed in the vicinity of the center thereof, is hollow from the rear end of the rod toward the tip, and is inserted into the insertion port 2 of the temperature sensing body 1 at the rear end side. Is.

Reference numeral 7 denotes a holding member, which has a concave cross section and has 2
The temperature sensitive body 1 is incorporated in the temperature sensitive body holding portion 8 in which a groove is formed in the vertical direction, and the outer periphery is threaded downward from the center of the bottom surface of the temperature sensitive body holding portion 8 to slide the operating rod 5. There is provided an insertion portion 10 in which a moving sliding hole 9 is formed in a hollow shape, and the diameter of the hole of the tip portion 11 of the insertion portion 10 is made smaller than the diameter of the other portions of the sliding hole 9. Then, the collar portion 6 of the actuating rod 5 abuts against it so that the actuating rod 5 does not move further in the tip direction.

Reference numeral 12 is a sliding member, which is a hollow cylindrical shape, and is threaded on the upper inner circumference for engaging with a threaded portion on the outer circumference of the insertion portion 10 of the holding member 7, and at the upper tip end. A spring collar 14 is formed that engages one end of a sliding spring 13 that is a coil spring that acts in a direction to push up the sliding member 12. Further downward, a fixing nut 1 for fixing the sliding member 12 to another member.
5 is provided rotatably.

Reference numeral 16 denotes a base member, which has a cylindrical shape with a bottom, and an insertion hole 17 for inserting the sliding member 12 to slide up and down is provided at the center of the bottom and has an upper inner periphery on the inner periphery. Engagement protrusions 18 are formed. Reference numeral 19 denotes an operating member, which has a cylindrical shape with a bottom, an engaging claw portion 20 that engages with the engaging protrusion portion 18 of the base member 16 is formed on the inner periphery of the opening portion, and further the inner periphery of the holding member 7 is formed. Engagement protrusion 2 that engages with the groove of the temperature sensitive body holding portion 8
1 is formed at two places from the opening portion to the bottom surface direction, and includes the temperature sensitive body 1, the holding member 7, the operating rod 5, the sliding member 12, and the sliding spring 13.

A large number of slits are formed in the operation member 19 at positions where the temperature sensitive body 1 is contained, so that the air in the room and the temperature sensitive body 1 are in direct and sufficient contact with each other. Furthermore,
On the outer peripheral surface of the opening of the operation member 19, a scale indicating the desired set temperature and heating level is displayed, and the base member 16 is rotatably engaged.
By rotating the operating member 19 with respect to the base point displayed on the outer circumference of 6 to change the scale, the engaging protrusion 21 engaging with the groove of the temperature sensitive body holding portion 8 rotates the holding member 7. By moving the temperature sensitive body 1 back and forth, a desired temperature and heating level can be set.

Reference numeral 22 is a connecting material, which is a hollow cylinder having a partially reduced inner diameter near the center, and the outer circumference being threaded.
The fixing nut 15 of the sliding member 12 is engaged with the upper portion thereof to fix the sliding member 12 to the upper portion of the connecting member 22. Reference numeral 23 denotes a connecting member, which is a hollow cylindrical shape and is formed by projecting a collar-like shape in the vicinity of the center of the outer shape. The outer peripheral surface of the leading end portion is threaded and the inner periphery of the rear end is also threaded to form the connecting member 2.
The connecting member 22 is fixed by engaging with the threaded portion on the side that does not engage with the sliding member 12, and the inner diameter of the hollow portion near the tip is partially reduced.

An on-off valve 24 is provided with a valve portion 25 at its tip, an E-ring 26 is attached at a position near the rear end of the shaft portion behind the valve portion 25, and a portion of the shaft behind the valve portion 25. Is inserted into each hollow portion of the connecting member 23, the connecting member 22, and the sliding member 12 to be incorporated therein. Further, the operating rod 5 comes into contact with the rear end of the opening / closing valve 24 and pushes down the opening / closing valve 24, and is located in the hollow portion from the connecting member 23 to the connecting member 22.
The upper end of the push-up spring 27, which is a coil spring having the shaft portion 4 inserted therein, contacts the lower surface of the E-ring 26 of the opening / closing valve 24 and lifts the opening / closing valve 24 upward. The opening / closing valve 24 is stopped at a position where the force and the pushing force of the pushing-up spring 27 are balanced.

Reference numeral 28 is a connecting pipe, one end of which is connected to the circulation pipe, the other end of which is connected to the inflow side of the radiator, and the inner periphery of which is threaded at a position intermediate between the ends of the connecting member 23. An engagement portion 29 is formed to which the threaded portion engages to fix the connection member 23, and inside the connection pipe 28 below the engagement portion 29, the valve portion 25 of the opening / closing valve 24 opens and closes. A blocking wall 31 having a flow port 30 is provided.

Reference numeral 32 denotes an O-ring for the connecting member, which is the connecting member 2
The adhesiveness between 3 and the engaging portion 29 is enhanced. Reference numeral 33 is an O-ring for the on-off valve, which connects the on-off valve 24 and the connecting member 2
It closely adheres to the hollow part of 3 to prevent the circulating fluid in the connecting pipe 28 from leaking into the connecting member 23.

Next, the operation will be described. First, as shown in FIG. 1, the flow port 30 in the connecting pipe 28 has the opening / closing valve 2
From the state in which the circulating fluid does not flow into the radiator at all by being fully closed by the valve portion 25 of 4, the operating member 19 is manually rotated to adjust the scale from the fully closed state of "0" to the scale of "5", for example. As a result, the distribution port 30 is opened.

When the operating member 19 is rotated in the fully open direction to adjust the scale, the threaded portion of the insertion portion 10 in the operating member 19 is pulled out from the threaded portion of the upper inner periphery of the sliding member 12, and in FIG. Since the member 7 moves upward, the force of the actuating rod 5 pushing down the open / close valve 24 becomes weaker, and the force of the push-up spring 27 pushing up the E ring 26 of the open / close valve 24 becomes stronger and the push-up spring 2
The on-off valve 24 is pushed up by the extension of 7. As a result, the valve portion 25 of the on-off valve 24, which was in close contact with the flow port 30 in the connection pipe 28, is lifted, and the horizontal portion of the cutoff wall 31 where the flow port 30 is formed and the tip end surface of the valve portion 25. A gap is created, and the circulating liquid flows from the flow port 30 through the gap into the radiator.

The opening / closing valve 24 in which the holding member 7 is largely moved upward and pushed up by the pushing-up spring 27 as the degree of rotating the operating portion 19 in the fully open direction is increased.
The amount of movement in the upward direction also increases, and accordingly, the blocking wall 3
The gap between the horizontal portion of No. 1 and the front end surface of the valve portion 25 also becomes large, the circulating liquid flowing increases, and the amount of heat radiation increases. In this way, the circulating fluid heated by the heating boiler flows into the radiator and flows inside the radiator, so that radiant heat is generated from the front of the radiator and convective heat is generated on the upper surface of the radiator to warm the room. .

Generally, a natural convection type radiator such as a panel convector is installed below the window with a length longer than that of the window, and the cold air entering the room through the window due to the temperature difference between the outdoor and the room. Is temporarily raised by the convective heat generated from the upper surface of the radiator, whereby cold air is prevented from flowing to the floor surface of the room, the temperature near the floor surface is lowered, and the temperature difference between the upper and lower sides of the room is prevented from increasing. Further, while the elevated cool air is descending, the cool air warms and convects, so that the room temperature can be raised so that the room temperature is uniform.

When the room temperature gradually rises due to the heat radiation from the radiator, the slit of the operation member 19 also gradually warms the temperature sensitive body 1 in contact with the air in the room, and the thermo wax in the temperature sensitive body 1 is gradually increased. 4 also expands gradually. Then, as the thermowax 4 gradually expands, the bellows member 3 in the temperature sensitive body 1 is compressed and the actuation rod 5 is gradually pushed out. The distribution port 30 is gradually closed.

When the room temperature reaches the set temperature, as shown in FIG. 2, the gap between the horizontal portion of the blocking wall 31 in the connecting pipe 28 and the front end surface of the valve portion 25 is 20 to 30 which is the maximum flow rate when fully opened.
The opening / closing valve 24 is moved to a position where a gap is formed so that the circulating fluid at a flow rate of 100% flows.

Since such a gap is generated, the operating rod 5 and the opening / closing valve 24 are shortened, the mounting position of the valve portion 25 is shifted rearward of the shaft portion, and , The inner volume is reduced by providing an indentation on the surface of the temperature sensitive body 1 and then the volume of the thermowax 4 is reduced by filling the thermowax 4 or the expansion rate of the thermowax 4 is reduced. The contraction of the bellows member 3 is reduced by changing it to a smaller one.

The gap between the horizontal portion of the blocking wall 31 in the connecting pipe 28 and the tip end surface of the valve portion 25 is 20 to 3 which is the maximum flow rate when fully opened.
Although the amount of heat is not so high that the room temperature rises due to the gap that allows the circulating liquid of 0% to flow, the cold air that enters through the window does not rise toward the floor surface from the window and rises. The convective heat of can be generated, which can prevent the temperature near the floor from becoming low.

In this state, if the room temperature continues to rise, the thermowax 4 further expands, the open / close valve 24 further descends, the flow port 30 is completely closed, and the circulating liquid flows into the radiator. To stop the room temperature from rising.

If the flow rate when the room temperature reaches the set temperature is less than 20 to 30% of the maximum flow rate, the convective heat generated from the radiator is small and the cold air entering through the window is sufficiently raised. However, if the flow rate exceeds 20 to 30% of the maximum flow rate, the radiant heat and convective heat generated by the radiator are too large and the room temperature rises.

Next, another embodiment will be described. In FIG. 3, the secondary circulation port 34 is formed in the blocking wall 31 in the connection pipe 28. It is provided at the tip of the vertical portion on the lower side of the blocking wall 31, and the circulation port 30 is opened and closed at the tip surface of the valve portion 25, while the secondary circulation port 30 is opened and closed at the side surface of the valve portion 25. It is what is done.

This operation will be described. First, in the fully closed state, the flow port 30 is completely closed at the tip end surface of the valve portion 25, and the secondary flow port 30 is completely closed at the side surface of the valve portion 25. When the operating portion 19 with the scale is rotated to set the desired temperature, the holding member 7 moves in the direction away from the sliding member 12, so that the operating rod 5 retracts,
As a result, the on-off valve 24 is pushed up by the push-up spring 27, and the circulating liquid flows into the radiator through the gap between the blocking wall 31 and the valve body 25 and the secondary circulation port 34 from the circulation port 30.

When the room temperature gradually rises and the thermowax 4 in the temperature sensitive body 1 also gradually expands, the bellows member 3 contracts and pushes out the operating rod 5, thereby opening and closing the valve 24 which is in contact with the operating rod 5. When the room temperature reaches the set temperature, the opening / closing valve 24 is pushed down to the position where only the secondary circulation port 34 is in the passage through which the circulating liquid passes, as shown in FIG.

At the secondary flow port 34, the opening / closing valve 24 is raised to maximize the gap between the shut-off wall 31 and the valve body 25,
It is formed so that a flow rate of 20 to 30% of the maximum flow rate of the circulating fluid in the fully opened state that flows through the maximum gap and the secondary circulation port 34 flows.

In this state, if the room temperature continues to rise, the thermowax 4 further expands, the open / close valve 24 further descends, and the valve portion 25 completely closes the secondary flow port 34 and radiates heat. The flow of the circulating fluid into the vessel is stopped so that the room temperature does not rise.

As described above, in the temperature control valve for the natural convection type radiator of the present invention, the flow rate of the circulating liquid does not become zero even when the room temperature reaches the temperature set by operating the operating portion 19, and the maximum flow rate is 20. Since ~ 30% of the circulating liquid is made to flow, even if the room temperature reaches the set temperature, the cool air from the window rises due to the convective heat generated from the radiator without descending toward the floor surface, and the temperature of the floor surface rises. It is possible to prevent the temperature near the floor from becoming cold and to prevent a temperature difference between the upper and lower sides of the room from occurring, thereby preventing the person in the room from feeling uncomfortable.

[0035]

As described above, according to the present invention, natural convection that controls the flow rate of the circulating liquid in the natural convection type radiator that radiates heat by circulating the heated circulating liquid to perform heating is controlled by the ambient temperature. In a temperature control valve for a radiator, an opening / closing valve that opens and closes a flow port formed in a blocking wall in a connecting pipe, and a temperature-sensing body that moves the opening / closing valve by a displacement that changes according to the ambient temperature are desired. 20 ~ 30% of the maximum flow rate when the ambient temperature reaches the set temperature, with the operation member that operates and sets the temperature and moves the on-off valve accordingly.
Since the on-off valve is moved to the position where the flow rate is set to 0, even if the room temperature reaches the set temperature, the cool air from the window rises due to the convective heat generated by the radiator without descending toward the floor surface. It is possible to prevent the temperature of the surface from being lowered and the vicinity of the floor to be cold, and to prevent a difference in temperature between the upper and lower sides of the room, thereby preventing the person in the room from feeling uncomfortable.

[Brief description of drawings]

FIG. 1 is a sectional view of a temperature control valve for a natural convection radiator according to an embodiment of the present invention when the valve is fully closed.

FIG. 2 is a sectional view at the same set temperature.

FIG. 3 is a cross-sectional view of a temperature control valve for a natural convection radiator according to another embodiment when a set temperature is reached.

FIG. 4 is a schematic explanatory diagram of a conventional convection radiator including a temperature control valve for a conventional convection radiator.

[Explanation of symbols]

 1 Temperature Sensitive Body 19 Operation Member 24 Opening / Closing Valve 28 Connection Pipe 30 Flow Port 31 Blocking Wall 34 Secondary Flow Port

Claims (2)

[Claims] 1. An opening / closing valve 24 for opening and closing a flow port 30 formed in a blocking wall 31 in a connecting pipe 28, and a temperature sensitive body 1 for moving the opening / closing valve 24 by a displacement which changes according to an ambient temperature. In the temperature control valve for natural convection type radiator, which is provided with an operating member 19 for operating and setting a desired temperature and moving the on-off valve 24 according to the desired temperature, the ambient temperature is controlled. The temperature control valve for a natural convection type radiator, wherein the opening / closing valve 24 is moved to a position where the flow rate is 20 to 30% of the maximum flow rate when the temperature reaches the set temperature. 2. A position in which a secondary flow port 34 through which a flow rate of 20 to 30% of the maximum flow rate flows is formed in the blocking wall 31 and only the secondary flow port 34 is opened when the ambient temperature reaches a set temperature. The temperature control valve for a natural convection type radiator according to claim 1, wherein the on-off valve 24 is moved to the above.