JP7208333B2 - Fixing structure to the plate body of the temperature control valve - Google Patents

Description

The present invention relates to a structure for fixing a temperature control valve to a plate body as a heat source for fixing a temperature control valve that controls the flow rate of a refrigerant according to the temperature sensed by a temperature sensing part to a plate body as a heat source.

2. Description of the Related Art Conventionally, the flow rate of a coolant in a cooling device or the like is controlled according to the temperature of a heat source. In order to control the flow rate with high accuracy according to the temperature of the heat source, it is necessary to efficiently sense the temperature of the heat source with the temperature sensing part. For example, a temperature control valve (temperature expansion valve) disclosed in Japanese Unexamined Patent Application Publication No. 2002-200001 is known as a valve device having a temperature sensing portion that senses the temperature of a heat source.

JP-A-2002-221378

The temperature type control valve of Patent Document 1 is a temperature expansion valve, but the temperature of the evaporator of the refrigeration cycle is transmitted to the temperature sensing chamber via a heat conducting member without depending on the temperature sensing cylinder. However, since a separate member called a heat-conducting member is interposed between the evaporator, which is the heat source, and the sensing chamber (expansion valve), the heat is difficult to transfer, and there is room for improvement.

SUMMARY OF THE INVENTION An object of the present invention is to provide a structure for fixing a temperature control valve to a plate body, which improves the efficiency of heat conduction between a heat source and a temperature sensing section formed of a plate body.

The structure for fixing the temperature control valve to the plate body according to claim 1 is a temperature control valve that moves the valve body in the axial direction according to the temperature sensed by the temperature sensing part and controls the flow rate of the refrigerant by the valve body. 1. A structure for fixing a temperature control valve to a plate body as a heat source against which said temperature sensing part abuts, wherein said temperature sensing part senses the temperature of said plate body. At the same time, the plate body and the temperature control valve are connected by a bracket made of an elastic member, and the elastic force of the bracket causes the temperature sensing portion side of the temperature control valve to be attached to the plate body in the axial direction. The plate body and a part of the temperature control valve on the temperature sensing part side are configured to contact each other on planes perpendicular to the axis.

The structure for fixing a temperature controlled valve to a plate body according to claim 2 is the structure for fixing a temperature controlled valve to a plate body according to claim 1, wherein the brackets are spaced apart in the axial direction and face each other. The plate body and a part of the temperature control valve are sandwiched between the pair of elastic pieces in the axial direction.

A structure for fixing a temperature controlled valve to a plate body according to claim 3 is the structure for fixing a temperature controlled valve to a plate body according to claim 2, wherein the bracket connects the pair of elastic pieces. A connecting portion is provided on one side with respect to the axis, and the pair of elastic pieces are fitted to the plate body and the temperature control valve from the same direction on one side of the axis so that the elastic pieces It is characterized in that the temperature control valve and the plate body are sandwiched between them.

A structure for fixing a temperature control valve to a plate body according to claim 4 is the structure for fixing a temperature control valve to a plate body according to claim 2 or 3, wherein the temperature control valve allows the refrigerant to flow. At least one joint extends in a direction intersecting with the axis, and the elastic piece on the temperature control valve side of the bracket is provided to engage with the joint. do.

The structure for fixing a temperature control valve to a plate body according to claim 5 is the structure for fixing a temperature control valve to a plate body according to claim 4, wherein the elastic member provided to engage with the joint is provided. The piece is characterized by having an engagement portion that forms a recess shaped along the longitudinal direction of the joint.

The structure for fixing a temperature control valve to a plate body according to claim 6 is the structure for fixing a temperature control valve to a plate body according to any one of claims 2 to 5, wherein the plate body is a heat source. and the elastic piece of the bracket on the plate body side faces the bottom face of the plate body opposite to the temperature control valve and presses the bottom face by the elastic force of the bracket. It is characterized by

According to the structure for fixing the temperature control valve to the plate body of claims 1 to 6, the bracket biases the temperature sensing part side of the temperature control valve in the axial direction so that the temperature sensing part of the temperature control valve can be axially fixed to the plate body which is the heat source. Therefore, the position of the heat-receiving part of the temperature-sensing part that receives heat from the plate body can be ensured on the axis with respect to the plate body, and heat can be efficiently conducted from the plate body to the temperature-sensing part. In particular, the heat from the plate body is transmitted to the temperature control valve generally in the axial direction, and the heat distribution becomes uniform around the axis. Since the direction of heat transfer coincides with the direction of actuation of the valve body, stable operation corresponding to the sensed temperature is possible.

1 is a perspective view showing a structure for fixing a temperature control valve to a plate body according to a first embodiment of the present invention; FIG. It is a partially crushed side view of the same fixing structure of 1st Embodiment. It is a top view of the same fixing structure of 1st Embodiment. It is a front view of the same fixing structure of 1st Embodiment. FIG. 7 is a perspective view showing a structure for fixing a temperature control valve to a plate body according to a second embodiment of the present invention; It is a partially crushed side view of the same fixing structure of 2nd Embodiment. FIG. 11 is a perspective view showing a structure for fixing a temperature control valve to a plate body according to a third embodiment of the present invention; It is a partially crushed side view of the same fixing structure of 3rd Embodiment.

Next, an embodiment of a structure for fixing a temperature control valve to a plate body according to the present invention will be described with reference to the drawings. 1 is a perspective view showing the fixing structure of the first embodiment, FIG. 2 is a partially broken side view of the fixing structure of the first embodiment, FIG. 3 is a top view of the fixing structure of the first embodiment, and FIG. 1] is a front view of the fixing structure of the first embodiment. [FIG. It should be noted that the concept of "up and down" in the following description corresponds to up and down in the drawings of FIGS. 1 and 4. FIG.

A temperature control valve 100 of this embodiment is composed of a valve device main body 10, an operation portion 20, and a thermoelement 30 (see FIG. 2) as a "temperature sensing portion". is attached to a plate body (metal plate 200 in this embodiment) as a "heat source". The valve device main body 10 is provided with a first joint 10a through which the refrigerant flows into the internal valve chamber and a second joint 10b through which the refrigerant flows out from the valve chamber. A valve stem 10c (see FIG. 2) that moves in the direction of the axis L is provided in the valve chamber of the valve device main body 10. As shown in FIG. The valve stem 10c has a valve body (not shown), which opens and closes the flow path between the first joint 10a and the second joint 10b, thereby controlling the flow rate of the refrigerant.

The operation part 20 is attached to the valve device main body 10 on the metal plate 200 side coaxially with the valve device main body 10 . That is, the operation unit 20 comprises an exterior case made up of a lid 20a fixed to the valve device main body 10 and a case 20b having the same diameter as the lid 20a. there is A thermo-element 30 is provided inside the cylindrical portion 20d of the case 20b.

The "temperature sensing part" in the present invention senses the temperature of the heat source, and the thermoelement 30 constitutes the "temperature sensing part" in this embodiment. The thermo-element 30 of this embodiment is a thermo-actuator that utilizes the expansion and contraction of paraffin or the like due to changes in temperature. move in the direction The sensing portion 30a is a "heat receiving portion" that receives heat from the metal plate 200 (heat source). The actuating shaft 30b actuates the valve shaft 10c having the valve element of the valve device main body 10 via the contact 20e, the diaphragm 20c and the contact seat 20f in the operating portion 20. As shown in FIG. The sensing portion 30a of the thermo-element 30 protrudes in a columnar shape, and is mounted in the mounting hole 200a of the metal plate 200. It abuts on the outer periphery of the opening of the mounting hole 200a. Then, the heat from this metal plate 200 is transferred to the sensing portion 30a. Note that the metal plate 200 is in close contact with a temperature sensing object (not shown).

The metal plate 200 and the temperature control valve 100 are connected by a bracket 1 made of an elastic member. The bracket 1 is formed by pressing and bending a metal plate. , a horizontal plate 13 facing the upper surface of the metal plate 200, and a vertical plate 14 facing parallel to the axis L. . Hereinafter, the elastic piece that biases the temperature control valve 100 toward the metal plate 200 will be referred to as the "control valve side elastic piece", and the elastic piece that biases the metal plate 200 toward the temperature control valve 100 will be referred to as the " The elastic piece on the heat source side”. The vertical plate 14 and the horizontal plate 13 constitute a connecting portion that connects the elastic pieces (elastic pieces 11A, 11B) on the control valve side and the elastic pieces (elastic pieces 12, 12) on the heat source side. That is, the bracket 1 has a connecting portion on one side with respect to the axis L. As shown in FIG.

The elastic piece 11A on the one control valve side is formed with an engaging portion 11a along the longitudinal direction of the first joint 10a, and the elastic piece 11B on the other control valve side is also formed along the longitudinal direction of the second joint 10b. An engaging portion 11b is formed. The engaging portion 11a has a shape following the outer shape of the first joint 10a, and similarly the engaging portion 11b has a shape following the outer shape of the second joint 10b. Here, since the first joint 10a and the second joint 10b are cylindrical, the engaging portion 11a and the engaging portion 11b are the outer diameters of the cylindrical first joint 10a and the second joint 10b. It is an arc shape that imitates the Also, the two elastic pieces 12, 12 on the heat source side are formed with mountain-shaped protrusions 12a, 12a, respectively, so as to come into contact with the back surface of the metal plate 200. As shown in FIG.

With the above configuration, the temperature control valve 100 is mounted on the metal plate 200 with the sensing portion 30a of the thermoelement 30 mounted in the mounting hole 200a of the metal plate 200, and the elastic piece 12 of the bracket 1 on the heat source side. , 12 and the horizontal plate 13, and the engaging portions 11a and 11b of the elastic pieces 11A and 11B on the control valve side are engaged with the first joint 10a and the second joint 10b, respectively. and the bracket 1 is attached. At the time of this attachment, the engaging portions 11a and 11b are engaged with the first joint 10a and the second joint 10b by the self elastic force of the bracket 1 so as to be snap-fitted. The bracket 1 presses the bottom surface of the metal plate 200 as shown by the arrow A in FIG. The engaging portions 11a and 11b of the elastic pieces 11A and 11B press the first joint 10a and the second joint 10b as indicated by arrows B in FIG.

As described above, the temperature control valve 100 moves the valve rod 10c in the direction of the axis L according to the temperature sensed by the sensing portion 30a to control the flow rate of the refrigerant flowing from the first joint 10a to the second joint 10b. Also, the temperature control valve 100 is fixed to a metal plate 200 with which the sensing portion 30a abuts. The metal plate 200 (heat source) and the temperature control valve 100 are connected by a bracket 1 made of an elastic member. Further, the elastic force of the bracket 1 urges the sensing portion 30a of the temperature control valve 100 toward the metal plate 200 in the direction of the axis L. As shown in FIG.

As described above, in the temperature control valve 100, the sensing portion 30a is located on the side of the metal plate 200 (heat source) on the axis L with respect to the valve device main body 10, and the bracket 1 biases the heat receiving portion in the direction of the axis L. Since the position of the sensing portion 30a is reliably secured on the axis L with respect to the metal plate 200, heat can be efficiently conducted from the metal plate 200, which is a heat source, to the sensing portion 30a. An annular flat surface 20d1 at the lower end of the cylindrical portion 20 of the case 20b is a plane orthogonal to the axis L, and the upper surface 200b of the metal plate 200 (outer circumference of the opening of the mounting hole 200a) facing this is also aligned with the axis L. It is a plane orthogonal to The planes 20d1 and 200b are in contact with each other. In this way, since the temperature control valve 100 and the metal plate 200 (heat source) are in contact with each other, the fixation is stable.

Moreover, according to the first embodiment, the bracket 1 can be attached to the temperature control valve 100 and the metal plate 200 from the side in the same direction by snap-fitting, which facilitates the assembly work.

Also, the metal plate 200 is arranged at a predetermined position with respect to a separate temperature sensing object, and the engaging portions 11a and 11b of the bracket 1 are located at predetermined positions between the first joint 10a and the second joint 10b. to engage. Therefore, the orientation of the first joint 10a and the second joint 10b with respect to the metal plate 200 (the orientation of the temperature control valve 100) is also determined at a predetermined position, and the orientation of the first joint 10a and the second joint 10b with respect to a separate pipe or the like is also determined. Determined automatically. Therefore, it becomes easier to connect the first joint 10a and the second joint 10b to the piping of the system provided with the temperature control valve, such as a refrigeration cycle system.

FIG. 5 is a perspective view showing a structure for fixing a temperature control valve to a plate body according to the second embodiment, and FIG. 6 is a partially broken side view of the same fixing structure according to the second embodiment. Elements similar to those of the first embodiment are denoted by the same reference numerals as in FIGS. 1 to 4, and duplicate descriptions are omitted as appropriate.

The difference between this second embodiment and the first embodiment is the structure and action of the bracket. The bracket 1' of the second embodiment does not have the control valve side elastic pieces 11A and 11B in the first embodiment, and is provided with a control valve side elastic piece 15 extending from the vertical plate 14 toward the temperature control valve 100 side. , a second vertical plate 16 facing parallel to the axis L from the elastic piece 15 is provided. The valve device main body 10 is screwed to the second vertical plate 16 .

In this second embodiment, the elastic force of the bracket 1' itself acts to press the bottom surface of the metal plate 200 against the projection 12a of the elastic piece 12 on the heat source side, as in the first embodiment. Also, the elastic piece 15 on the control valve side urges the temperature control valve 100 and its sensing portion 30a toward the metal plate 200 side. The elastic force of the bracket 1' urges the sensing portion 30a of the temperature control valve 100 toward the metal plate 200 in the direction of the axis L. As shown in FIG. The vertical plate 14 and the horizontal plate 13 constitute a connecting portion that connects the elastic piece (elastic piece 15) on the control valve side and the elastic pieces (elastic pieces 12, 12) on the heat source side. That is, the bracket 1' has a connecting portion on one side with respect to the axis L. As shown in FIG.

In this second embodiment as well, since the bracket 1' biases the sensing portion 30a in the direction of the axis L, the position of the sensing portion 30a, which is the heat receiving portion, is reliably secured on the axis L with respect to the metal plate 200. Heat can be efficiently conducted from the metal plate 200 to the sensing section 30a. Also in the second embodiment, since the annular flat surface 20d1 at the lower end of the cylindrical portion 20 of the case 20b and the metal plate 200 (heat source) are in contact with each other, the flat surfaces 20d1 and 200b are fixed.

FIG. 7 is a perspective view showing a structure for fixing a temperature control valve to a plate body according to the third embodiment, and FIG. 8 is a partially broken side view of the same fixing structure according to the third embodiment. The difference from the first embodiment is the structure and action of the bracket. The bracket 1″ of the third embodiment does not have the elastic pieces 12, 12 on the heat source side of the first embodiment, and the horizontal plate 13 is screwed to the upper surface of the metal plate 200. FIG.

In this third embodiment, the elastic force of the bracket 1″ itself causes the first joint 10a and the second joint 10a to engage with each other at the engaging portions 11a and 11b of the elastic pieces 11A and 11B on the control valve side, as in the first embodiment. The elastic force of the bracket 1″ urges the sensing portion 30a of the temperature control valve 100 toward the metal plate 200 in the direction of the axis L. As shown in FIG.

In this third embodiment as well, the bracket 1'' is biased in the direction of the axis L, so that the position of the sensing part 30a, which is the heat receiving part, is reliably secured on the axis L with respect to the metal plate 200. It is possible to efficiently conduct heat to the sensing portion 30a from the metal plate 200. Also in the third embodiment, the annular flat surface 20d1 at the lower end of the cylindrical portion 20 of the case 20b and the metal plate 200 (heat source) are flat. Since 20d1 and 200b are in contact with each other, the fixation is stable.

In addition, the orientation of the first joint 10a and the second joint 10b with respect to the metal plate 200 (orientation of the temperature control valve 100) is also determined at a predetermined position by the engaging portions 11a and 11b of the bracket 1'', and the connection to separate piping or the like is determined. Piping connection work and the like are facilitated.

Although the embodiments of the present invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments, and design modifications and the like are made within the scope of the present invention. is included in the present invention. For example, the shape of the "engagement portion" of the elastic member with respect to the joint is not limited to an arc shape or a V-shape as in the embodiment, but may be a concave portion into which the joint can be fitted. That is, the concept that the engaging portion "engages" with the joint is a state in which the joint is fitted into the engaging portion and movement of the elastic piece in the direction intersecting with the joint is restricted. is.

1 Bracket 11A Elastic piece 11B Elastic piece 11a Engagement portion 11b Engagement portion 12 Elastic piece 12a Protrusion 13 Horizontal plate (connecting portion)
14 vertical plate (connection)
10 valve device body 10a first joint 10b second joint 20 operating portion 20a lid 20b case 20c diaphragm 30 thermoelement (temperature sensing portion)
30a sensing part (heat receiving part)
30a1 plane 30b operating shaft 100 temperature control valve 200 metal plate (heat source)
200a mounting hole 200a1 plane L axis 1' bracket 15 elastic piece 16 second vertical plate 1'' bracket

Claims (6)

A temperature control valve that controls the flow rate of the refrigerant by moving the valve body in the axial direction according to the temperature sensed by the temperature sensing part is attached to the plate body as the heat source with which the temperature sensing part abuts. A structure for fixing a temperature control valve to a plate body, which is fixed by
The temperature sensing part senses the temperature of the plate body,
The plate body and the temperature control valve are connected by a bracket made of an elastic member, and the elastic force of the bracket biases the temperature sensing portion side of the temperature control valve in the axial direction against the plate body. and
The plate body of the temperature control valve is configured such that the plate body and a portion of the temperature sensing part of the temperature control valve on the side of the temperature sensitive part are in contact with each other on planes perpendicular to the axis. Fixed structure. The bracket has at least a pair of elastic pieces spaced apart and facing each other in the axial direction, and the pair of elastic pieces sandwiches the plate body and a part of the temperature control valve in the axial direction. 2. The fixing structure of the temperature control valve to the plate body according to claim 1, wherein the fixing structure comprises: The bracket has a connecting portion for connecting the pair of elastic pieces on one side with respect to the axis, and the bracket connects the plate body and the temperature control valve from the same direction on the one side of the axis with respect to the temperature control valve. 3. The plate body of the temperature control valve according to claim 2, wherein a pair of elastic pieces are fitted so that the temperature control valve and the plate body are sandwiched between the elastic pieces. fixed structure. The temperature control valve has a joint through which the refrigerant flows, and at least one joint extends in a direction intersecting the axis, and the elastic piece of the bracket on the temperature control valve side is engaged with the joint. 4. The fixing structure of the temperature control valve to the plate body according to claim 2 or 3, characterized in that it is provided so as to 5. The plate of the temperature control valve according to claim 4, wherein the elastic piece provided to engage with the joint has an engaging portion that forms a recess shaped along the longitudinal direction of the joint. Fixed structure to the body. The plate body is a heat source, and the elastic piece of the bracket on the plate body side faces the bottom face of the plate body opposite to the temperature control valve and presses the bottom face by the elastic force of the bracket. A structure for fixing a temperature control valve to a plate body according to any one of claims 2 to 5, characterized in that it is configured as follows.

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