JP3494999B2 - Fluid equipment connection device and fluid 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 fluid equipment connection device for connecting fluid-operated equipment or fluid pipes such as a separation type air conditioner, and a fluid equipment to which the equipment is connected.

[0002]

2. Description of the Related Art Conventionally, Freon gas has been used as a refrigerant gas (fluid) for operating an air conditioner such as an air conditioner. When this refrigerant gas is released to the outside, it causes environmental damage such as global warming and ozone layer depletion, which is a global problem. For this reason, as a first countermeasure, a technique using so-called CFC substitutes, hydrocarbons, etc. as a refrigerant gas has been developed. Also, the second
As a measure against the above, the law is obliged to recover the internal refrigerant gas or destroy it into harmless components when relocating or discarding the air conditioner (industrial waste treatment law, PRTR law, PL law). Law, Basic Law on Recycling Society, etc.)

However, regarding the first countermeasure, no matter which refrigerant gas is currently being developed, the pollution,
Any of the problems of high price, odor, danger, efficiency, etc. remains, and the present situation is that none of them is superior to Freon gas.

Regarding the second measure, particularly in a non-integrated type (separation type) air conditioner (having an outdoor unit and an indoor unit), when the devices are connected by a refrigerant pipe or the refrigerant pipe is removed. However, it is inevitable that some refrigerant will be discharged depending on the skill level of the operator, and in this respect, complete recovery cannot be realized.

Further, when the air conditioner is relocated (removed), a pump for removing the refrigerant, or a generator for operating the air conditioner if the power supply at the installation location is cut off, is required. I have no choice but to ask a contractor to do the work. In this case, the work cost is expensive, and since the consumer who uses the air conditioner bears this cost,
As a consumer, there is a situation in which it is cheaper to discharge the refrigerant without collecting it and to fill it with a new refrigerant at the relocation destination. Even from such circumstances, it is difficult to realize complete recovery of the refrigerant, and it cannot be said that the effect of preventing environmental damage is insufficient only by legal regulation.

In view of the above-mentioned problems, the present inventors have taken a step further from the conventional idea of recovering (recycling) a refrigerant, and have installed it in an outdoor unit, an indoor unit, a pipe, etc. of an air conditioner. Performing refrigerant leakage prevention (prevention), release prohibition (prevention), and containment makes it easy and reliable to perform refrigerant reduction (emission reduction), reuse (reuse), or unnecessary refrigerant destruction (decomposition). , Has developed a technology aiming at a circular economic system and has already applied for a patent (Japanese Patent Application No. 11-68402, Japanese Patent Application 2000-
No. 121143).

FIG. 11 shows the above patent application (Japanese Patent Application No. 11-6).
8402) is a sectional view showing a twin type stop valve disclosed in FIG. Here, the stop valve is connected to a fluid device, and opens and closes the valve to contain the fluid between the fluid devices. Here, stop valve 110C
Is provided with a flange 920 and a through hole in the valve box 910, a tube insertion hole is opened in a state of being inclined with respect to the through hole, and a cylindrical valve rod 1010 is screwed into the thread portion of the through hole.
A tube (copper tube) 1050 is inserted into the tube insertion hole. Refrigerant piping and refrigerant devices are connected to the ends of the tubes. Then, the connecting bolt 11 at the tail of the valve rod 1010
By rotating 40 and advancing and retracting the valve rod in the through hole, the flow path from the tube (copper tube) 1050 through the through hole to the opening in the vicinity of the flange 920 is opened and closed. Further, the stop valve 120D has a configuration substantially similar to that of the stop valve 110C.
The symbol “R” is attached to the reference numerals indicating the respective components, but the difference is that the refrigerant inlet / outlet mechanism 400 and the service valve 600 are provided.

Then, each stop valve 110C, 120D
Are connected via flanges 920, 920R, and the valve stem 1
By opening 010R (retracting the inside of the through hole), the service valve and the through hole can be communicated with each other, and the through hole and the tube can be filled or recovered with the refrigerant through the service valve. In the figure, the valve rod is advanced in the through hole to close the valve.

[0009]

However, in the case of the above-mentioned technique, even if the valve is closed to disconnect the through hole from the tube and the refrigerant R in the tube is confined, the dead space corresponding to the crosshatch portion in the figure is formed. However, there is a problem that the refrigerant in the above area cannot be contained and the refrigerant in this portion is released into the atmosphere when the stop valves are separated (removed). This dead space inevitably occurs due to the structure of the opening / closing operation of the valve.

From the above, there is a technology that can surely realize the leakage prohibition (prevention), the discharge prohibition (prevention), and the containment of the refrigerant, and at the same time, can perform the work of mounting, relocating and discarding the air conditioner very easily. Is requested. If this new technology is developed, the cost of relocation will be greatly reduced, so consumers will have to install or relocate the air conditioner themselves without releasing the refrigerant until they violate the law, which causes environmental damage. Can be prevented. Further, even if a contractor is requested to relocate, the cost will be low, which will lead to promotion of refrigerant recovery.

The present invention solves the above-mentioned problems and ensures the containment of fluids such as separation type air conditioners with almost zero fluid leakage and discharge at the time of attachment and detachment of fluid equipments and fluid pipes. An object of the present invention is to provide a fluid device connecting device and a fluid device that can be mounted and removed very easily.

[0012]

In order to achieve the above-mentioned object, the fluid device connecting device of the present invention serves as a housing and is housed in a valve box having a fluid passage hole. A valve body that opens and closes the flow hole, and when the valve body closes the flow hole, a port that communicates with a space partitioned by the valve body, and a port that is attached to the port to remove fluid in the space or e Bei a second valve capable filling, the valve body the flow
When the hole is closed, it is in close contact with the valve body and keeps the contact area airtight.
Further, a valve seat is further provided, and the port and the flow hole constitute a valve seat.
It is characterized by being communicated by radially penetrating the member
And

[0013]

It is preferable that the valve seat has a protrusion, and the protrusion is brought into close contact with the surface of the valve body to keep the contact portion airtight.

It is preferable that a hexagonal hole is provided in the tail portion of the valve body, and the opening / closing operation of the valve body can be performed by a wrench inserted in the hexagonal hole.

It is preferable that the valve body be opened and closed by advancing and retracting through the flow hole.

It is preferable that the advancing / retreating direction of the valve element is inclined at 30 ° to 60 ° with respect to the axis of the fluid flow direction in the flow hole.

It is preferable that the valve box is provided with a connecting portion for connecting to another fluid device connecting device or fluid device.

A fluid device according to the present invention is a fluid device to which the fluid device connection device is connected, wherein a fluid inlet or outlet of the fluid device is connected to the flow hole. To do.

It is preferable that the fluid device is a compressor, and a discharge port or a suction port of the compressor is connected to the flow hole.

It is preferable that the fluid device is a distributor or a header, and a fluid inlet of the distributor or a fluid outlet or an inlet of the header is connected to the flow hole.

The fluid device is preferably a pipe.

In the fluid device, it is preferable that the valve element is closed and the fluid path between the valve element and the fluid device is filled with the fluid.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an embodiment of a fluid device connection apparatus 100 of the present invention. In addition,
The fluid device connection device 100 is connected (detached) to another fluid device connection device 100A having a similar configuration. or,
The fluid device connecting devices 100 and 100A are connected to tubes (copper pipes) 10 and 10A, respectively, and various fluid devices (refrigerant piping, air conditioner indoor unit, outdoor unit, etc.) are attached to the ends of the tubes to form fluid devices. They are connected to each other via the fluid device connecting devices 100 and 100A. In addition, the case where the refrigerant R is used as the fluid will be described below. Further, the fluid device may be directly connected to the fluid device connecting apparatus 100 without using the tube.

In this figure, the fluid device connecting device 100 is shown.
Is a valve box 4 serving as a housing, and a valve body 2 housed in the valve box 4.
A port P communicating with a flow hole (space) U defined by the valve body 4, a second valve (service valve) 6 attached to the port P, and a valve seat 8 housed in the valve box 4. Equipped with.

The valve box 4 has a substantially cylindrical shape and is provided with flow holes U and V for the refrigerant R. A connection portion (flange) 40 is provided on the bottom surface of the valve box 4. Here, the axial direction of the flow hole U is parallel to the vertical direction of the drawing, and one end thereof opens to the flange 40 side. The circulation hole V is formed on the side of the valve box 4, communicates with the other end of the circulation hole U, and the axial direction (fluid flow direction) of the opening end forms an acute angle θ with the axial direction of the circulation hole U. I am doing it. Then, the refrigerant R that has flowed in from the flange 40 side sequentially flows through the flow holes U and V, flows out from the opening end, and flows through the tube 10 connected to the opening end.

The valve body 2 has a substantially cylindrical shape, and is inserted into a guide hole which is formed at the center of the valve box 4 and communicates with the flow holes U and V. Then, by moving back and forth in the guide hole,
The circulation holes (spaces) U and V are opened and closed (divided). Details of the opening / closing operation of the valve body 2 will be described later.
A hexagonal hole 15 is provided in the tail portion 22 of the valve body 2, and when a wrench inserted in the hexagonal hole is rotated, the valve body 2 screwed into the guide hole advances and retreats in the valve box 4 by the action of a screw. To do. Further, the tail portion 22 is provided with a concave step portion, and a sealing material (O ring or the like) 50 for preventing the leakage of the refrigerant R is arranged therein.

On the side of the valve box 4 (on the side opposite to the flow hole V),
A port P communicating with a space (circulation hole) U defined by opening and closing the valve body 2 is provided. The service valve 6 is attached to the opening end side of the port P, and the refrigerant R in the circulation hole U can be removed or filled through the service valve 6. The operation of the service valve 6 will be described later.

A substantially ring-shaped valve seat 8 is fitted in the through hole U of the valve box 4, and the upper edge of the valve seat 8 is in close contact with the head of the valve body 2 to keep the contact portion airtight. It is like this. In addition,
In the side wall of the valve seat 8, the communication portion between the communication hole U and the port P is hollowed out.

On the other hand, since the fluid device connecting apparatus 100A has substantially the same configuration as the fluid device connecting apparatus 100 described above, the similar parts are shown by adding "A" to the reference numerals attached to the respective components. The description thereof is omitted. For example, 2A in the figure shows a valve body 2A having the same structure as the valve body 2. The fluid device connection device 100A is different from the fluid device connection device 100 in that the port P and the service valve 6 peculiar to the present invention are not provided.

By connecting the fluid device connection device 100 and the fluid device connection device 100A via the flanges 40 and 40A, respectively, the refrigerant R is connected to the tubes 10 and 1.
Distribution will be possible between 0A. Here, each valve body 2, 2
It goes without saying that A is opened. As described above, by using the fluid device connecting device 100 of the present invention, it is possible to easily connect to another fluid device connecting device 100A (or directly to the fluid device), and the work of mounting and removing the fluid device is simplified. . The partner connected to the fluid device connection device 100 may be the same fluid device connection device 100 as this, but in this case, the service valve 6 is attached to both of the fluid device connection devices 100 and 100. That is, one of the service valves 6 may be functionally wasted. Therefore, in the embodiment of FIG. 1, one is the fluid device connection device 100A (without the service valve 6), but the invention is not limited to this.

Next, the operation of the port P and the service valve 6 will be described. In FIG. 1, consider a case where the fluid device connection devices 100 and 100A are connected to allow a refrigerant to flow, and then the removal is required.

In this case, first, each fluid equipment connection device 10 is connected.
Close the valve body of 0, 100A,
A refrigerant R in A (or a fluid device connected to the end thereof) is contained. Then, the fluid device connection device 100, 100A
Separate each other. Here, when the valve body is closed, the valve bodies 2, 2
A is in close contact with the valve seats 8 and 8A, respectively, and the through holes U and V
(U ′, V ′) is blocked, and the refrigerant R in the portion from the flow hole V (V ′) to the pipe 10 (10A) is contained.
However, in the conventional fluid device connection device in which the valve is disposed, the refrigerant R in the dead space corresponding to the cross hatch portion in the figure cannot be contained, and the refrigerant in this portion is released to the atmosphere at the time of disconnection. It was dead. In the present invention, after removing (recovering) the refrigerant R in the dead space from the port communicating with the dead space via the service valve 6, the fluid device connection devices 100, 10 are connected.
Since 0A can be separated from each other, the discharge of the refrigerant in the dead space can be prevented.

Further, the refrigerant R can be charged through the service valve 6. For example, the fluid device connection device 1
When 00 and 100 A are attached to each other, air is present in the dead space. If the fluid equipment is operated without removing the air in this portion, the air may mix with the refrigerant flowing through the fluid equipment, resulting in deterioration of the quality and characteristics of the refrigerant. In the present invention, the atmosphere in the dead space can be removed (evacuated) from the port communicating with the dead space via the service valve 6, so that the atmosphere in the dead space can be prevented from being mixed with the refrigerant. In addition, after evacuation, the dead space may be filled with the refrigerant R via the service valve 6,
In addition, the valve body is opened and the fluid device connection devices 100, 10 are connected.
If 0A is attached to each other and a vacuum is drawn, then the refrigerant R can be filled in all the refrigerant flow paths (including fluid devices) via the service valve 6.

The fluid device connecting devices 100, 100A
When connecting the pipes to each other, the valve body is closed in advance and the pipes 10 and 1 are connected.
If the refrigerant R is contained in the 0A portion, it is necessary to fill the tubes 10 and 10A (and various fluid devices at the end) with the refrigerant and to collect the refrigerant from the pipe when the tube is removed. The labor can be omitted. In this case, each flange 40 of the fluid device connection device 100, 100A before connection,
Predetermined blind flanges 71, 71 are attached to 40A.

Next, regarding the operation of the service valve 6,
This will be described with reference to FIG. The service valve 6 has a substantially cylindrical tip portion 6a, a central portion 6b, and a base portion 6c that are axially connected to each other. The base portion 6c is provided with a screw and is appropriately attached to the inner wall surface (valve box 4) of the port P. It is fixed (Fig. 2 (a)). The refrigerant R flows into and out of the port P via the service valve 6. Here, normally, the tip portion 6a and the central portion 6b are in close contact with each other, and the base portion 6c is the port P.
Since it is airtightly attached to the (valve box 4), the port P is blocked from the outside air. In addition, a pin 6d is provided at the end of the base 6c so that the pin 6d is not normally pushed.
A blind plate 70 is attached to the outside thereof.

When the refrigerant flows into and out of the port P via the service valve 6, the blind plate 70 is removed, and the charge union 50 is screwed to the service port P instead (FIG. 2B). The charge union 50 has a substantially cylindrical shape, and a protrusion 50a for pushing the pin 6d is formed at the tip. Here, when the pin is pushed, the front end portion 6a of the service valve is separated from the central portion 6b and moved forward, and the refrigerant R can flow in and out through the separated portion. On the other hand, if the pressing of the pin is stopped, the end face of the tip end portion 6a is brought into close contact with the end face of the central portion 6b by the urging force of a predetermined spring, and the inflow and outflow of the refrigerant is stopped. The central portion of the protrusion 50a has an opening through which the refrigerant R flows in and out of the charge hose 60. Also, the base portion 50b of the charge union 50
Has a shape in which the cap nut 60a at the tip of the charge hose 60 is externally inserted.
0b and the cap nut 60a are sealed so that the refrigerant does not leak. In this way, the charge hose 60 can collect and fill the refrigerant, or perform vacuuming.

Next, the opening / closing operation of the valve body 2 will be described with reference to FIGS. As shown in FIG. 1 above, in the closed state, the valve body 2 blocks (separates) the communication holes U and V. Here, as shown in FIG. 3, when the valve body 2 is retracted in the upward direction, the valve body 2 and the valve seat 8 are separated from each other, and the communication holes U and V come into communication with each other. In this way, the refrigerant R
Can flow in and out between the flow holes U and V. In addition, since the axial direction of the opening end of the flow hole V forms an acute angle θ (preferably 30 to 60 °) with the axial direction of the flow hole U, as compared with a three-way valve or the like (θ = 90 °), There is an advantage that the flow resistance does not change suddenly (right angle) and the fluid resistance decreases. Further, since the valve body 2 is opened and closed by advancing and retracting in the valve box 4, the valve box 4 only needs to have a size such that the valve body 2 can be inserted therein, and the fluid device connecting apparatus itself can be miniaturized.

FIG. 4 is a partially enlarged view of the vicinity of the valve body 2 and the valve seat 8. The tip of the valve body 2 contacts the valve seat 8 (close contact)
A step having a conical surface 20 for forming is formed.
Further, the inner peripheral surface of the upper edge portion of the valve seat 8 widens outward in a substantially trumpet shape, and the outer peripheral surface thereof is a conical surface. The intersection of the trumpet-shaped widening portion and the conical surface is a protrusion 8S having a ring-shaped edge (FIG. 4).
(1)). Then, when the valve body 2 is closed, the protrusion 8S comes into close contact with the conical surface 20 of the valve body 2 by point contact to keep the close contact portion airtight (FIG. 4 (2)). By doing so, dust and the like are less likely to intervene in the contact portion, as compared with the case where the surfaces contact each other, and it becomes easier to maintain the airtight state. Further, even if dust is present, the protrusion 8S can shear and remove the dust. Further, since the contact portion of the valve body 2 is tapered on the conical surface 20, even if this portion is worn, if the pushing amount of the valve body is increased, a new tapered portion without wear is formed on the protrusion 8S. They come into contact with each other and the airtight state is always maintained.

FIGS. 5 and 6 show a fluid equipment to which the fluid equipment connection device of the present invention is connected, and a system composed of various fluid equipment.

In FIG. 5, this system is an air conditioner operated by a refrigerant, and can be used as both an air conditioner and a heat pump by switching the flow direction of the refrigerant between forward and reverse. The fluid devices included in this system are represented by underlined characters in the figure, and are, for example, a distributor, an evaporator, a compressor, a liquid pipe, and the like.

Further, in FIG. 6, this system is an air conditioner (air conditioner) operated by a refrigerant. The fluid devices included in this system are represented by characters in the figure, and examples thereof include an evaporator, a compressor, an accumulator, and the like.

FIG. 7 shows a mode in which the fluid device connecting apparatus of the present invention is connected to a compressor. In the figure, “CP” indicates a compressor, and “M” indicates a motor. First, in a totally hermetic compressor, a motor directly connected to the compressor is built in a casing, and the casing is sealed by welding or the like so that it cannot be removed. The fluid device connection device 100 of the present invention is connected to both the discharge port and the suction port of the casing (FIG. 7).
(1)). It should be noted that in the figure, the other fluid device connection device to be paired is also indicated by reference numeral 100. Further, in the semi-hermetic type compressor, a motor directly connected to the compressor is built in the casing, but the casing can be disassembled by removing the lid and the valve plate. The fluid device connection device 100 of the present invention is connected to both the discharge port and the suction port of the casing (FIG. 7).
(2)).

In the open type compressor, the motors directly connected to the compressors are arranged separately on the same base, and the motor power is transmitted by the V belt or the like. The fluid device connection device 10 of the present invention is provided at both the discharge port and the suction port of the compressor.
0 is connected (FIG. 7 (3)). In other open type compressors, motors directly connected to the compressors are spaced apart on the same base, and motor power is transmitted by a shaft or the like. The fluid device connection device 100 of the present invention is connected to both the discharge port and the suction port of the compressor (FIG. 7 (4)).

In any of the above-described compressors, by closing the fluid device connecting apparatus 100, the refrigerant can be contained, the compressor can be disassembled for repair, parts can be replaced, and the like. Emission is prevented.

FIG. 8 shows a mode in which the fluid device connecting apparatus of the present invention is connected to the periphery of the cooler. In this embodiment, the fluid device connection device 100 is connected to the header and the distributor. Here, the header is a fluid device for dividing the flow of the refrigerant from one circuit into a plurality of circuits (or conversely, merging the plurality of circuits into one circuit). In this example, the fluid device connection device 100 is provided on the one circuit side. It is connected. Further, the distributor is a fluid device for uniformly dividing the flow of the refrigerant from one circuit to a plurality of circuits, and in this example, the fluid device connection device 100 is connected to one circuit side (inflow side). Note that FIG. 9 is a partially enlarged view showing the distributor to which the fluid device connecting device is connected.

FIG. 10 shows a mode in which the fluid device connecting apparatus of the present invention is connected to the header. Fluid equipment connection device 1
00 is connected to both one circuit (inflow side) and a plurality of circuits (outflow side) of the header (FIG. 10 (1)).
Further, extension pipes may be attached to a plurality of circuits (outflow side), and the fluid device connection device 100 may be connected to the extension pipes (FIG. 10).
(2)).

In the case of the above-mentioned header or distributor, by closing the fluid device connecting apparatus 100, the refrigerant can be contained and the header or distributor can be removed for repair or replacement. Emission is prevented.

As described above, when the fluid equipment connecting device is connected to the fluid equipment (the fluid inflow side and outflow side of the fluid equipment) and the valve body is closed in advance and the refrigerant R is confined, It is possible to omit the trouble of charging the refrigerant to the fluid device and the trouble of collecting the refrigerant from the fluid device at the time of removal. Also, mounting,
It is possible to prevent the fluid from leaking or being discharged due to the work at the time of removal. Further, in this way, since the fluid device can be moved without leaking the refrigerant while being filled with the refrigerant R, not only a specialized contractor but also a user (user) of the device, It is possible to easily attach / detach the fluid device connecting device to / from the device without being overwhelmed with the filling and recovery of the refrigerant.

Further, the fluid equipment to which the fluid equipment connection device is connected is pre-filled with gas at the manufacturing factory, and quality assurance (purity of gas, leak check of valves, leak of joints of connecting portions, etc.) is performed. In addition, the fluid device itself can be sold, and in this way, leakage can be more effectively prevented and malfunction of the device can be suppressed in view of the environmental damage prevention described above. In the present invention, since it is possible to prefill the fluid device connected to the fluid device connection device with gas,
It also has such an effect.

The fluid used in the present invention is not particularly limited, but in the case of a refrigerant, a natural refrigerant made of a chemical substance such as ammonia, carbon monoxide, water, air and hydrocarbon can be used. In addition, Freon, CFC (Chloro Fluoro Carbo
n), HCFC (Hydro Chloro Fluoro Carbon), HFC (Hydr
o Fluoro Carbon) and those developed in the future (various chemical substances).

A room air conditioner is suitable as the fluid equipment to which the present invention is applied, but it can also be applied to a non-integrated heat exchanger in which an evaporator and a condenser are connected, for example, a refrigerator or a large refrigerator.

[0053]

As described above, according to the fluid equipment connecting device of the first aspect, when the valve body in the fluid equipment connecting device is closed, the fluid is connected from the port communicating with the space (dead space) where the fluid cannot be contained. Since the fluid can be collected or filled through the service valve, the air in the space is mixed with the fluid after the fluid device connecting device is attached, and the fluid in the space is released when the fluid device connecting device is removed. Can be prevented.

Further, according to the fluid device connecting device of the second aspect, compared to the case where the valve body and the valve seat are in face-to-face contact, dust or the like is less likely to intervene in the contact portion, and the airtight state is further maintained. It will be easier. Further, even if dust is present, the protrusion can shear and remove the dust.

According to the fluid equipment connecting device of the third aspect, the flow direction of the fluid in the through hole is 30 ° with respect to the advancing / retreating direction of the valve body.
Since the angle is up to 60 °, there is an advantage that the flow path of the refrigerant does not change suddenly (right angle) and the fluid resistance is reduced as compared with the three-way valve or the like.

Further, in the fluid device of the present invention, the fluid in the fluid device can be contained by closing the valve body of the connected fluid device connection device. It is possible to omit the trouble of collecting the fluid from the fluid device at the time of removal, and to prevent the fluid from leaking or being discharged due to the work at the time of attachment or removal.

Further, according to the fluid equipment according to claim 11 , the fluid equipment can be distributed in the market in a state where the fluid is filled, and not only a specialized dealer but also a user (user) of the equipment.
Even without being overwhelmed by the filling and recovery of the refrigerant,
It becomes possible to easily attach / detach the fluid device connection device to / from the machine description.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state in which a fluid device connection device is connected to another fluid device connection device.

FIG. 2 is a diagram for explaining the operation of the service valve.

FIG. 3 is an operation explanatory view when the valve body of the fluid device connection device is opened.

FIG. 4 is an operation explanatory view showing an opening / closing operation of a valve body.

FIG. 5 is a diagram showing an example of a fluid device to which a fluid device connection device is connected.

FIG. 6 is another diagram showing an example of a fluid device to which the fluid device connection device is connected.

FIG. 7 is a diagram showing a mode in which the fluid device connection device of the present invention is connected to a compressor.

FIG. 8 is a diagram showing a mode in which the fluid device connection device of the present invention is connected to the periphery of a cooler.

FIG. 9 is a partial enlarged view showing a mode in which the fluid device connection device of the present invention is connected to a distributor.

FIG. 10 is a diagram showing a mode in which the fluid device connection device of the present invention is connected to the header.

FIG. 11 is a cross-sectional view showing a conventional stop valve.

[Explanation of symbols]

2 valve body 4 valve box 6 second valve (service valve) 8 seat 40 connection U circulation hole (space) V circulation hole P port R fluid (refrigerant)

Front page continuation (58) Fields surveyed (Int.Cl. ⁷ , DB name) F24F 5/00 F16K 27/00 F16L 55/00 F25B 41/04

Claims (11)

(57) [Claims] 1. A valve box that serves as a housing and has a fluid flow hole, a valve body that is housed in the valve box and that opens and closes the flow hole, and when the valve body closes the flow hole, a port communicating with the space delimited by the valve body, is mounted on the port, e Bei a second valve capable of removal or filling of fluid in the space, when the valve body is closed the communication holes Close to the valve body,
A valve seat that keeps the close contact area airtight is further provided, and the port and the communication hole radially penetrate the member forming the valve seat.
Fluid device connection device characterized by being communicated through
Place 2. The fluid device according to claim 1, wherein the valve seat has a protrusion, and the protrusion is in close contact with the surface of the valve body to keep the contact portion airtight. Connection device. 3. A hexagonal hole is provided in the tail portion of the valve body,
Opening and closing operation of the valve body, characterized in that said can be performed by inserting the wrench into the hexagonal hole claim 1 or claim
Item 2. A fluid device connection device according to item 2 . 4. claims 1, wherein the valve body is opened and closed by advancing and retracting the flow hole 3 Neu
The fluid device connection apparatus according to any one of the above. 5. The fluid device connecting apparatus according to claim 4 , wherein the valve element is advanced and retracted at an angle of 30 ° to 60 ° with respect to an axis of the fluid flow direction in the flow hole. . Wherein said valve body is fluid device according to any one of claims 1, characterized in that the connection portion for connection to another fluid device connecting device or fluid devices is provided 5 Connection device. 7. A fluid device to which the fluid device connection device according to claim 1 is connected, wherein a fluid inlet or outlet of the fluid device is connected to the flow hole. A fluid device characterized in that Wherein said fluid device is a compressor, the fluid device according to claim 7, the discharge port or suction port in the compressor is characterized in that it is connected to the circulation hole. Wherein said fluid device is a distributor or header, claims, characterized in that the inlet of the fluid in the distributor, or the outlet or inlet of the fluid in the header is connected to the communication holes Item 7. The fluid device according to item 7 . 10. The fluid device according to claim 7 , wherein the fluid device is a pipe. 11. The fluid device according to claim 7 , wherein the valve body is closed, and a fluid path between the valve body and the fluid device is filled with the fluid. A fluid device characterized in that