JP2010286086A - Fluid valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fluid valve capable of performing opening and closing operation without causing a trouble even if liquid adheres to a valve body. <P>SOLUTION: A communication port 162 is formed in a conical tapered shape with its opening area decreased from a first space A side toward a second space B side. The valve body 163 includes a first valve body 164, and a second valve body 165 having a contact face 165b for sealing a space between the first space A and the second space B by abutting on an inner peripheral face 162a of the communication port 162 from the first space A side. The contact face 165b is formed as a face configuring a portion of a spherical surface projecting toward the first space A from a space surrounded by the first valve body 164 and the second valve body 165. The second valve body 165 includes a through-hole 165c making the space surrounded by the first valve body 164 and second valve body 165 communicate with the second space B regardless of abutment between the valve body 163 and a partitioning member 161. The second valve body 165 is further inclined toward the second space B side as it comes near the through-hole 165c. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fluid valve, and is effective when applied to a water vapor valve for an adsorption refrigerator having an adsorbent that adsorbs or desorbs a refrigerant.

  In recent years, as a water vapor valve used in an adsorption refrigerator, one that opens and closes a communication port according to a differential pressure before and after the communication port (valve port) has been adopted. A steam valve that passively opens and closes a flow of a dilute gas such as water vapor, which is a refrigerant of an adsorption refrigerator, has a small pressure loss, opens with a small differential pressure, and vice versa. It is required to close the valve with a small differential pressure in the direction and to have a quick response.

  In response to such a demand, there has been proposed a steam valve that combines a shell-like valve body having a curved surface that is convex on the side facing the communication port, and a partition member that closes by contact with the valve body. (For example, refer to Patent Document 1).

JP 2002-257250 A

  However, the water vapor valve described in Patent Document 1 has a problem in that a fluid having condensability such as water vapor condenses in the concave portion of the valve body and stays as water (liquid), thereby hindering opening and closing.

  An object of this invention is to provide the fluid valve | bulb which can perform opening / closing operation | movement without trouble, even when a liquid adheres to a valve body in view of the said point.

  In order to achieve the above object, according to the first aspect of the present invention, the space in which the fluid exists is divided into the first space (A) and the second space (B), and the first space (A) and the second space are divided. A partition member (161) provided with a communication port (162) for communicating the space (B), a valve body (163) for opening and closing the communication port (162), and a position when the valve body (163) is opened. The communication port (162) is formed in a cylindrical shape or a conical taper shape whose opening area is reduced from the first space (A) side toward the second space (B) side. The valve body (163) includes a first valve body portion (164) formed in a flat plate shape or a shape having a curved surface that is convex on the first space (A) side, and a first valve body portion. (164) is arranged on the second space (B) side from the first space (A) side to the communication port (162) It has a second valve body portion (165) having a contact surface (165b) that seals between the first space (A) and the second space (B) by contacting the inner peripheral surface (162a). The contact surface (165b) is directed from the space surrounded by the first valve body (164) and the second valve body (165) toward the first space (A) or the second space (B). It is formed as a surface that constitutes a part of a spherical surface that becomes convex, and the second valve body portion (165), regardless of the presence or absence of contact between the valve body (163) and the partition member (161), A through hole (165c) capable of communicating the space surrounded by the first valve body (164) and the second valve body (165) and the second space (B) is provided, and the second valve body portion (165) is inclined toward the second space (B) as it approaches the through hole (165c), and the valve body (165) It is characterized by being adapted to open and close the communicating port (162) by the pressure acting on itself.

  Thus, the valve body (163) is formed into a flat plate shape, or a first valve body portion (164) formed in a shape having a curved surface that is convex on the first space (A) side, and a second valve body portion ( 165), the second valve body portion (165) can be configured to be covered with the first valve body portion (164), so that the liquid is contained inside the valve body (163). It can prevent staying. Thereby, even when a liquid adheres to a valve body (163), it becomes possible to perform opening and closing operation without trouble.

  At this time, by providing the through hole (165c) in the second valve body portion (165), the pressure inside and outside the valve body (163) can be used even in a negative pressure environment or an environment where the pressure fluctuates. It is possible to prevent the valve body (165) from being damaged due to the difference. In addition, the second valve body portion (165) is inclined toward the second space (B) as it approaches the through hole (165c), thereby entering the inside of the valve body (163) from the through hole (165c). Even when the fluid is condensed, it is possible to prevent the condensed liquid from staying in the valve body (163).

  In the invention according to claim 2, the inner peripheral surface (162a) of the communication port (162) is convex inward of the communication port (162), and is formed in an arc shape having a predetermined radius of curvature. It is characterized by being.

  According to this, the contact surface (165b) of the valve body (163) and the inner peripheral surface (162a) of the communication port (162) can be brought into pressure contact with each other in a line contact state. It becomes possible to improve the sealing performance when (162) is closed.

  In the invention according to claim 3, the inner peripheral surface (162a) of the communication port (162) is provided with a protrusion (162b) protruding toward the inner side of the communication port (162). It is characterized by that. According to this, the protrusion (162b) provided on the inner peripheral surface (162a) of the communication port (162) and the contact surface (165b) of the valve body (163) can be pressed in a line contact state. Therefore, it becomes possible to improve the sealing performance when the communication port (162) is closed.

  In the invention according to claim 4, the restricting member (166) includes at least three struts (166a) extending from the partition member (161) toward the first space (A), and the struts (166a). And at least three holding portions (166b) extending from the end opposite to the partition member (161) toward the radially inner side of the communication port (162). ) Are arranged on the same virtual plane orthogonal to the central axis of the communication port (162) and are adjacent to each other when viewed from a direction parallel to the central axis of the communication port (162). (166b) are characterized in that the angles formed by each other are equal to each other or 120 ° or less. According to this, it is possible to regulate the position in the direction parallel to the central axis of the communication port (162) and the direction orthogonal to the central axis when the valve body (163) is opened.

  In the invention according to claim 5, the inner peripheral surface (162a) of the communication port (162) is convex inward of the communication port (162), and is formed in an arc shape having a predetermined radius of curvature. The valve body (163) has a circular outer shape when viewed from the first valve body portion (164) side. The diameter of the valve body (163) is D, and the opening area of the communication port (162) is the largest. E is the opening diameter of the portion with a large radius, R is the radius of curvature of the inner peripheral surface (162a) of the communication port (162), x is the length of the holding portion (166b) of the regulating member (166), and the partition member (161) When the distance to the holding portion (166b) is defined as a regulating member height h, the regulating member height h is set so as to satisfy the relationship represented by the following formula 1.

  According to this, when the valve body (163) is inclined at the maximum inclination angle with respect to the central axis of the communication port (162), the valve body (163) enters the communication port (162) and cannot be closed. Can be prevented.

  Further, in the invention described in claim 6, when the support column (166a) is viewed from a direction orthogonal to the central axis of the communication port (162), the distance from the partition member (161) becomes closer to the central axis. It is characterized by sloping. According to this, when the valve body (163) moves in a direction parallel to the central axis of the communication port (162), the valve body (163) can be prevented from being caught by the communication port (162).

  Moreover, in the invention of Claim 7, the 1st valve body part (164) is comprised separately from the 2nd valve body part (165), It is characterized by the above-mentioned. Thus, the strength can be improved by configuring the valve body (163) by joining two members. Further, since it can be strong against torsion, the height of the valve body (163), that is, the length in the direction parallel to the central axis of the communication port (162) can be reduced, and the plate thickness can be reduced. can do. For this reason, the product cost of a valve body (163) can be reduced.

  Further, as in the invention described in claim 8, it may be applied as a water vapor valve (16) for controlling the flow of vapor refrigerant in an adsorption refrigerator having an adsorbent that adsorbs or desorbs refrigerant.

  In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim shows the correspondence with the specific means as described in embodiment mentioned later.

It is a whole lineblock diagram showing the adsorption refrigeration machine in a 1st embodiment. It is sectional drawing which shows the water vapor valve | bulb 16 which concerns on 1st Embodiment. FIG. 3 is a view taken in the direction of arrow X in FIG. 2. It is a front view which shows the valve body 163 of the water vapor valve 16 which concerns on 1st Embodiment. FIG. 5 is a view as seen from the direction of arrow Y in FIG. 4. It is sectional drawing which shows the water vapor valve | bulb 16 which concerns on 2nd Embodiment. FIG. 7 is a Z arrow view of FIG. 6. It is sectional drawing which shows the principal part of the seal plate 161 of the water vapor valve 16 which concerns on 3rd Embodiment. It is the K section enlarged view of FIG. It is sectional drawing which shows the valve body 163 of the water vapor valve 16 which concerns on 4th Embodiment. It is sectional drawing which shows the principal part of the seal plate 161 of the water vapor valve 16 which concerns on other embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the same or equivalent parts are denoted by the same reference numerals in the drawings.

(First embodiment)
1st Embodiment of this invention is described based on FIGS. In this embodiment, the fluid valve according to the present invention is applied to a water vapor valve of an adsorption refrigeration machine. FIG. 1 is an overall configuration diagram illustrating an adsorption refrigerator according to the first embodiment.

  As shown in FIG. 1, the adsorption refrigerator of the present embodiment includes an adsorber 1, an outdoor heat exchanger 2, and an indoor heat exchanger 3. The details of the adsorber 1 will be described later.

  The outdoor heat exchanger 2 is a heat medium that circulates in the adsorber 1 (in this embodiment, a fluid obtained by mixing water with an ethylene glycol-based antifreeze liquid) and exchanges heat between the heat medium and outdoor air. It is an exchanger. The indoor heat exchanger 3 exchanges heat between the heat medium cooled by the refrigerating capacity generated in the adsorber 1 and the air blown into the room (hereinafter, this air is referred to as conditioned air). It is a heat exchanger that cools conditioned air.

  The indoor heat exchanger 3 is disposed in an air-conditioning casing (not shown) that forms a passage for conditioned air, and a blower (not shown) is provided upstream of the air flow of the air-conditioning casing. .

  In the present embodiment, the adsorbent is obtained by circulating cooling water (in this embodiment, the same fluid as the heat medium) recovered from the waste heat generated in the water-cooled internal combustion engine (not shown) in the adsorber 1. The pumps 41 to 43 circulate the heat medium, and the switching valves 44 to 47 switch the circulation path of the heat medium.

  Next, the adsorber 1 will be described. The adsorber 1 divides a stainless steel casing 11 filled with a refrigerant in a state where the inside is maintained in a substantially vacuum state into four spaces, four spaces 101 to 104, and a heat medium is contained in each space 101 to 104. The circulating heat exchangers 12 to 15 are accommodated. In this embodiment, water is used as the refrigerant.

  Specifically, among the four spaces 101 to 104, heat exchangers 12 and 13 (hereinafter referred to as heat exchangers) that exchange heat between the heat medium and the adsorbent are provided between the first adsorption core accommodation space 101 and the second adsorption core accommodation space 102. , The first adsorption core 12 and the second adsorption core 13). The evaporator accommodating space 103 accommodates a heat exchanger 14 (hereinafter referred to as an evaporator 14) that exchanges heat between the liquid refrigerant and the heat medium circulating in the indoor heat exchanger 3. The condenser housing space 104 houses a heat exchanger 15 (hereinafter referred to as a condenser 15) that exchanges heat between the vapor refrigerant and the heat medium circulating in the outdoor heat exchanger 2.

  An adsorbent that adsorbs the vapor refrigerant and desorbs the refrigerant adsorbed by being heated is adhered and fixed to the surfaces of the first adsorption core 12 and the second adsorption core 13 with an adhesive. . In this embodiment, silica gel is used as the adsorbent, and epoxy resin is used as the adhesive.

  In the casing 11, the water vapor valve 16 a that controls the communication state between the first adsorption core accommodation space 101 and the evaporator accommodation space 103, and the communication state between the first adsorption core accommodation space 101 and the condenser accommodation space 104 are controlled. The water vapor valve 16b, the water vapor valve 16c for controlling the communication state between the second adsorption core housing 102 and the evaporator housing space 103, and the water vapor for controlling the communication state between the second adsorption core housing 102 and the condenser housing space 104 A valve 16d is provided.

  Here, since all the steam valves 16a to 16d have the same structure, the steam valves 16a to 16d are collectively referred to as the steam valve 16. The water vapor valve 16 corresponds to the fluid valve of the present invention.

  Next, the water vapor valve 16 will be described with reference to FIGS. FIG. 2 is a cross-sectional view showing the water vapor valve 16 according to the first embodiment.

  As shown in FIG. 2, the water vapor valve 16 has a space in which a refrigerant (fluid) exists in a first space (for example, a first adsorption core accommodating space 101) A and a second space (for example, an evaporator accommodating space 103) B. A metal seal plate 161 is provided to be divided into two. The first space A exists above the second space B in the vertical direction.

  The seal plate 161 is provided with a communication port 162 that allows the first space A and the second space B to communicate with each other. In the present embodiment, the seal plate 161 is fixed to the casing 11 (see FIG. 1). The seal plate 161 corresponds to the partition member of the present invention.

  The communication port 162 is formed in a conical taper shape in which the opening area is reduced from the first space A side toward the second space B side. The inner peripheral surface 162a of the communication port 162 is formed into an R shape, that is, an arc shape having a predetermined radius of curvature R that protrudes inward of the communication port 162.

  A valve body 163 that opens and closes the communication port 162 from the first space A side is disposed in the communication port 162. The valve body 163 is composed of two members, a first valve body portion 164 and a second valve body portion 165. In the present embodiment, the first valve body 164 is configured separately from the second valve body 165. Moreover, the 1st valve body part 164 and the 2nd valve body part 165 are each formed with resin with thin plate | board thickness.

  3 is a view taken in the direction of arrow X in FIG. As shown in FIGS. 2 and 3, the first valve body 164 is formed in a circular flat plate shape. The second valve body portion 165 is disposed on the second space B side from the first valve body portion 164 and has a substantially circular flat bottom surface portion 165a and a side surface portion 165b that forms an outer frame thereof, and has a dish shape. It is configured. And the edge part of the side part 165b of the 2nd valve body part 165 is connected to the outer peripheral part of the 1st valve body part 164 over the perimeter. The valve body 163 has a circular outer shape when viewed from the first valve body portion 164 side.

  FIG. 4 is a front view showing the valve body 163 of the water vapor valve 16 according to the first embodiment. In addition, the two-dot chain line in FIG. 4 has shown the virtual spherical surface which has the same radius. As shown in FIGS. 2 and 4, the side surface portion 165 b of the second valve body portion 165 is hermetically sealed between the first space A and the second space B by contacting the inner peripheral surface 162 a of the communication port 162. It constitutes the contact surface to be sealed. The side surface portion 165b is formed as a surface constituting a part of a spherical surface, that is, formed by a part of a spherical shape. In other words, the side surface portion 165b is formed of a part of a spherical surface.

  The distance from the central axis C of the valve body 163 to the outer peripheral end of the second valve body 165 is a, the distance from the central axis C of the valve body 163 to the outer peripheral end of the bottom surface 165a is b, and the communication port 162. Of the communication port 162, that is, when the opening diameter on the second space B side is the minimum opening shape d, the minimum opening diameter d is satisfied so as to satisfy the relationship expressed by the following Expression 2. Is set.

(Equation 2)
2b <d <2a
FIG. 5 is a view taken in the direction of arrow Y in FIG. As shown in FIGS. 2 and 5, a through hole 165c is provided on the inner side of the side surface portion 165b of the second valve body portion 165, that is, on the bottom surface portion 165a. The through hole 165c is formed in a circular shape, and is disposed at the center of the bottom surface portion 165a. In the present embodiment, a cylindrical tube portion 165d that protrudes toward the second space B is formed on the inner peripheral edge portion of the through hole 165c. Further, the bottom surface portion 165a that is a surface between the side surface portion 165b and the through hole 165c in the second valve body portion 165 is inclined so as to be directed toward the second space B as it approaches the through hole 165c.

  As shown in FIGS. 2 and 3, the water vapor valve 16 regulates the position when the valve body 163 is opened, that is, flows from the second space B to the first space A when the communication port 162 is opened. A valve guide 166 is provided to prevent the valve body 163 from flowing due to the dynamic pressure of the refrigerant. The valve guide 166 corresponds to the regulating member of the present invention.

  The valve guide 166 includes four support columns 166a extending from the seal plate 161 toward the first space A side, and radially inward of the communication port 162 from the end of each support column 166a opposite to the seal plate 161, that is, And four holding portions 166 b extending toward the central axis C of the communication port 162. The four holding portions 166b are disposed on the same virtual plane orthogonal to the central axis C of the communication port 162, and are adjacent to each other when viewed from a direction parallel to the central axis C of the communication port 162. The angles formed by the portions 166b are equal to each other. In the present embodiment, when viewed from a direction parallel to the central axis C of the communication port 162, the angle formed by the adjacent holding portions 166b is 90 °. The valve guide 166 configured in this way can regulate the position of the communication port 162 in the direction parallel to the central axis C and in the direction perpendicular to the central axis C when the valve body 163 is opened. The angle formed between the adjacent holding portions 166b may be configured to be 120 ° or less, and the angle formed between the adjacent holding portions 166b may not be equal to each other.

  By the way, the diameter of the valve body 163, that is, the diameter of the first valve body portion 164 is D, the portion having the largest opening area in the communication port 162, that is, the opening diameter on the first space A side of the communication port 162 is e, When the radius of curvature of the inner peripheral surface 162a of the communication port 162 is R, the length of the holding portion 166b of the valve guide 166 is x, and the distance from the seal plate 161 to the holding portion 166b is the valve guide height h, the following formula The valve guide height h is set so as to satisfy the relationship shown in FIG.

  Further, the column portion 166a of the valve guide 166 is formed so as to move away from the central axis C toward the second space B when viewed from a direction orthogonal to the central axis C of the communication port 162.

  Next, the operation of the water vapor valve 16 will be described.

  When the pressure on the first space A side is higher than the pressure on the second space B side, the valve body 163 is pressed against the second space B side by the differential pressure, so that the inner peripheral surface 162a of the communication port 162 of the seal plate 161 is pressed. The valve body 163 comes into close contact, and the communication port 162 is closed by the valve body 163.

  On the other hand, when the pressure on the second space B side is higher than the pressure on the first space A side, the force for pressing the valve body 163 against the inner peripheral surface 162a of the communication port 162 does not act, so the second space B to the first space A Due to the dynamic pressure of the refrigerant flowing through the valve body 163, the valve body 163 floats with respect to the seal plate 161, that is, is separated, and the communication port 162 is opened.

  As described above, the valve body 163 includes the first valve body portion 164 and the second valve body portion 165 formed in a disk shape, so that the second valve body portion 165 is the first valve body. Since the configuration can be such that the lid is covered by the part 164, it is possible to prevent the liquid-phase refrigerant (water) generated by the condensation of the refrigerant vapor (water vapor) from staying inside the valve body 163. Thereby, even if the liquid adheres to the valve body 163, the opening / closing operation can be performed without any trouble.

  At this time, by providing the through hole 165c in the second valve body portion 165, even if it is used in a negative pressure environment or an environment where the pressure fluctuates, a pressure difference between the inside and the outside of the valve body 163 is generated. It is possible to prevent the body 165 from being damaged. Further, the bottom surface portion 165a that is a surface between the side surface portion 165b and the through hole 165c in the second valve body portion 165 is inclined so as to be directed toward the second space B as it approaches the through hole 165c. Even when the refrigerant vapor enters the valve body 163 from 165c and condenses, the condensed liquid phase refrigerant can be prevented from staying in the valve body 163.

  Further, the inner peripheral surface 162a of the communication port 162 is convex inwardly of the communication port 162 and is formed in an arc shape having a predetermined radius of curvature, so that the inner surface of the side surface 165b of the valve body 163 and the communication port 162 are formed. Since the circumferential surface 162a can be press-contacted in a line contact state, it is possible to improve the sealing performance when the valve is closed. Furthermore, even when the seal plate 161 is made of a material harder than the material constituting the valve body 163, the valve body 163 is prevented from being damaged when the valve body 163 and the protrusion 162b come into contact with each other. it can.

  Further, by setting the valve guide height h, which is the height of the valve guide 166 from the seal plate 161, so as to satisfy the relationship expressed by the above mathematical formula 1, the valve body 163 is placed on the central axis C of the communication port 162. On the other hand, even when the valve body is inclined at the maximum inclination angle, it is possible to prevent the valve body 163 from entering the communication port 162 and closing the valve.

  In addition, by forming the column portion 166a of the valve guide 166 from the direction perpendicular to the central axis C of the communication port 162, the column guide 166a is further away from the central axis C toward the second space B side. When the valve body 163 moves in a direction parallel to the central axis C of the communication port 162, the valve body 163 can be prevented from being caught by the communication port 162.

  Moreover, the strength can be improved by configuring the first valve body part 164 separately from the second valve body part 165, that is, by configuring the valve body 163 by joining two members. Furthermore, since it can be strengthened against torsion, the height of the valve body 163 can be reduced and the plate thickness can be reduced. For this reason, the product cost of the valve body 163 can be reduced.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 6 is a cross-sectional view showing the water vapor valve 16 according to the second embodiment, and FIG. 7 is a view taken in the direction of the arrow Z in FIG.

  In the water vapor valve 16 of the present embodiment, as shown in FIGS. 6 and 7, the valve guide 166 has three support portions 166a and three holding portions 166b. Further, when viewed from a direction parallel to the central axis C of the communication port 162, the angle formed by the adjacent holding portions 166b is 120 °. According to this, compared with the valve guide 166 of the first embodiment, it is possible to obtain the same effect as the first embodiment while reducing the number of parts.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIGS. FIG. 8 is a cross-sectional view showing a main part of the seal plate 161 of the water vapor valve 16 according to the third embodiment, and FIG. 9 is an enlarged view of a K portion of FIG.

  In the water vapor valve 16 of the present embodiment, as shown in FIGS. 8 and 9, the inner peripheral surface 162 a of the communication port 162 of the seal plate 161 is provided with a plurality of protrusions 162 b with sharp tips. The cross-sectional shape seen from the direction orthogonal to the central axis C of the surface 162a is stepped. For this reason, the opening diameter of the communication port 162 increases in a stepped manner from the second space B side toward the first space A side. The seal plate 161 is made of a material softer than the material constituting the valve body 163.

  According to this, the projecting portion 162b provided in a step shape on the inner peripheral surface 162a of the communication port 162 and the side surface portion 165b of the valve body 163 can be pressed in a line contact state. It becomes possible to improve the sealing performance when closed. Further, by forming the seal plate 161 from a material softer than the material constituting the valve body 163, it is possible to prevent the valve body 163 from being damaged when the valve body 163 comes into contact with the protrusion 162b. Even when the sealing plate 161 is made of a material harder than the material constituting the valve body 163 by covering the inner peripheral surface 162a of the communication port 162 with a flexible material such as rubber, the valve body 163 It is possible to prevent the valve body 163 from being damaged when the projection 162b contacts.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 10 is a cross-sectional view showing a valve body 163 of the water vapor valve 16 according to the fourth embodiment.

  In the water vapor valve 16 of the present embodiment, as shown in FIG. 10, the valve body 163 of the present embodiment includes a first valve body portion 164 and a second valve body portion 165 that are integrally formed of a thin resin. , Configured as one part. According to this, compared with the valve guide 166 of the first embodiment, it is possible to obtain the same effect as the first embodiment while reducing the number of parts and the manufacturing process.

(Other embodiments)
In the third embodiment, an example in which a plurality of protrusions 162b having a pointed tip are provided in a step shape on the inner peripheral surface 162a of the communication port 162 of the seal plate 161 is described. As shown to (a), you may provide multiple protrusion part 162b of the shape where the front-end | tip was rounded off. According to this, even when the seal plate 161 is made of a material harder than the material constituting the valve body 163, the valve body 163 is damaged when the valve body 163 and the protrusion 162b come into contact with each other. Can be prevented.

  Moreover, although the said 1st Embodiment demonstrated the example which formed the internal peripheral surface 162a of the communicating port 162 of the seal plate 161 so that the cross-sectional shape seen from the direction orthogonal to the central axis C might become R shape, Not only this but a taper shape as shown in Drawing 11 (b) is good. Further, the communication port 162 may have a cylindrical shape as shown in FIG.

  In these cases, it is possible to prevent the valve body 163 from being damaged when the valve body 163 and the protrusion 162b come into contact with each other by configuring the seal plate 161 with a material softer than the material constituting the valve body 163. Further, even when the seal plate 161 is made of a material harder than the material constituting the valve body 163 by covering the inner peripheral surface 162a of the communication port 162 with a flexible material such as rubber, the valve body 163 It is possible to prevent the valve body 163 from being damaged when the projection 162b contacts.

  In each of the above embodiments, the example in which the first valve body 164 is formed in a disc shape has been described. However, the present invention is not limited thereto, and the first valve body portion 164 is formed in a shape having a curved surface that is convex on the first space A side. Also good.

  Moreover, although the said each embodiment demonstrated the example which each formed the 1st valve body part 164 and the 2nd valve body part 165 with resin, you may form not only this but with a metal.

  Moreover, although each said embodiment demonstrated the example which provided one through-hole 165c in the center part of the bottom face part 165a in the 2nd valve body part 165, it is not restricted to this, You may provide multiple through-holes 165c. .

  In each of the above embodiments, the example in which three or four support portions 166a and four holding portions 166b of the valve guide 166 are provided has been described. However, the present invention is not limited thereto, and the support portions 166a and the holding portions 166b are provided in five. One or more may be provided.

161 Seal plate (partition member)
162 Communication port 162a Inner peripheral surface 162b Protruding portion 163 Valve body 164 First valve body portion 165 Second valve body portion 165b Side surface portion (contact surface)
165c Through hole 166 Valve guide (regulating member)
166a Supporting part 166b Holding part

Claims (8)

A space in which the fluid exists is divided into a first space (A) and a second space (B), and a communication port (162) for communicating the first space (A) and the second space (B) is provided. A defined partition member (161);
A valve body (163) for opening and closing the communication port (162);
A regulating member (166) for regulating the position of the valve body (163) when the valve is opened,
The communication port (162) is formed in a columnar shape or a conical taper shape in which an opening area is reduced from the first space (A) side toward the second space (B) side. 163) includes a first valve body portion (164) formed in a flat plate shape or a shape having a curved surface in which the first space (A) side is convex, and the first valve body portion (164). The first space (A) and the second space are arranged on the second space (B) side and come into contact with the inner peripheral surface (162a) of the communication port (162) from the first space (A) side. (B) is configured to have a second valve body portion (165) having a contact surface (165b) that seals between,
The contact surface (165b) is directed from the space surrounded by the first valve body (164) and the second valve body (165) toward the first space (A) or the second space (B). Formed as a part of a spherical surface that is convex
Regardless of the presence or absence of contact between the valve body (163) and the partition member (161), the first valve body (164) and the second valve body (165) are provided on the second valve body portion (165). ) And a through hole (165c) capable of communicating the second space (B) with the space surrounded by
The second valve body portion (165) is inclined so as to go toward the second space (B) as it approaches the through hole (165c),
The fluid valve, wherein the valve body (165) opens and closes the communication port (162) by a pressure acting on the valve body (165).   The inner peripheral surface (162a) of the communication port (162) is convex inward of the communication port (162), and is formed in an arc shape having a predetermined radius of curvature. 2. The fluid valve according to 1.   The protrusion (162b) protruding toward the inner side of the communication port (162) is provided on the inner peripheral surface (162a) of the communication port (162). The fluid valve described in 1. The restricting member (166) includes at least three support columns (166a) extending from the partition member (161) toward the first space (A), and the partition member (161) in the support column (166a). And at least three holding portions (166b) extending radially inward of the communication port (162) from the end on the opposite side,
The at least three holding portions (166b) are arranged on the same virtual plane orthogonal to the central axis of the communication port (162) and are parallel to the central axis of the communication port (162). The angle formed by the adjacent holding portions (166b) when viewed from the direction is equal to each other or equal to or less than 120 °, according to any one of claims 1 to 3. The fluid valve described. The inner peripheral surface (162a) of the communication port (162) is convex inward of the communication port (162) and is formed in an arc shape having a predetermined radius of curvature.
The valve body (163) has a circular outer shape when viewed from the first valve body portion (164) side,
The diameter of the valve body (163) is D, the opening diameter of the portion having the largest opening area of the communication port (162) is e, and the radius of curvature of the inner peripheral surface (162a) of the communication port (162) is R, when the length of the holding portion (166b) of the regulating member (166) is x, and the distance from the partition member (161) to the holding portion (166b) is the regulating member height h,
The fluid valve according to claim 4, wherein the restriction member height h is set so as to satisfy the relationship represented by the following mathematical formula 1.

  When viewed from a direction orthogonal to the central axis of the communication port (162), the support column (166a) is inclined toward the central axis as the distance from the partition member (161) increases. The fluid valve according to claim 4 or 5, wherein   The fluid valve according to any one of claims 1 to 6, wherein the first valve body (164) is configured separately from the second valve body (165).   8. The water vapor valve (16) according to any one of claims 1 to 7, which is applied as a water vapor valve (16) for controlling the flow of vapor refrigerant in an adsorption refrigerator having an adsorbent that adsorbs or desorbs refrigerant. Fluid valve.

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