CN100594147C

CN100594147C - Four-loop protective valve

Info

Publication number: CN100594147C
Application number: CN200410087954A
Authority: CN
Inventors: 服部建二
Original assignee: Nabco Ltd
Current assignee: Nabco Ltd
Priority date: 2003-10-27
Filing date: 2004-10-27
Publication date: 2010-03-17
Anticipated expiration: 2024-10-27
Also published as: TWI238793B; KR100584000B1; KR20050040704A; CN1611403A; JP2005127477A; JP4507556B2; TW200516021A

Abstract

Provided is a four-circuit protection valve, reduced in number of parts by forming a valve body as a single body structure, and keeping high strength. This four-circuit protection valve 1 includes thevalve body 3. The valve body 3 is formed by a single body shaped to form a first body part 9 and a second body part 11 extending in a first axial direction 5 and in a second axial direction 7 being bent at the bent part 13 as the whole. An opening 54 for a check valve, which is provided for disposing a first check valve part 51 and a second check valve part 53 is formed in such a position as to be accessed from the outer walls 87, 88 of the bent part 13 not through another member.

Description

Four-loop protection valve

Technical field

The present invention relates to a kind of for motor vehicle four-loop protection valve.

Background technology

Open in the 2000-264193 communique the spy, disclose vehicle four-loop protection valve in the past.Owing to improved the reliability of air system, and sometimes in the vehicle that pedal brake, parking brake, power-transfer clutch, suspension or other subsidiary engines etc. are worked, use four-loop protection valve under the air pressure effect.

As shown in figure 12, in such four-loop protection valve, be connected with the 1st output port C1 and the 2nd output port C2 via the 1st piston valve B1 and the 2nd piston valve B2 from the air fed chamber A1 of air holder.And, the secondary side (output port C1) of the 1st piston valve B1 and the secondary side (the 2nd output port C2) of the 2nd piston valve B2 are connected with the A2 of secondary chamber via two supply paths that formed by the 1st boiler check valve D1 and the 2nd boiler check valve D2 respectively, and the aforementioned A2 of secondary chamber is connected with the 3rd output port C3 and the 4th output port C4 via the 3rd boiler check valve D3, the 4th boiler check valve D4 and the 3rd piston valve B3, the 4th piston valve B4.

Therefore, the air that supplies to a chamber A1 is sent the 1st output port C1 and the 2nd output port C2 through the 1st piston valve B1 and the 2nd piston valve B2.Simultaneously, the part of air of sending from the 1st piston valve B1 and the 2nd piston valve B2 is admitted to the A2 of secondary chamber by the supply path that is formed by the 1st boiler check valve D1 and the 2nd boiler check valve D2.And, be sent to the 3rd output port C3 from the A2 of secondary chamber by the 3rd boiler check valve D3 and the 3rd piston valve B3, and be sent to the 4th output port C4 through the 4th boiler check valve D4 and the 4th piston valve B4.In Figure 12, mark E1, E2 and F1, F2 are primary side and secondary side bonded assembly cutoff port and the boiler check valve with the 1st piston valve B1 and the 2nd piston valve B2.

But; in four-loop protection valve shown in Figure 12; be opening G1, G2 and H1, the H2 that is formed for taking in the space of the 1st boiler check valve D1 and the 2nd boiler check valve D2 and being used for closing by these valves, the left and right directions of valve body 100 that must be from Figure 12 carries out the perforate operation.But, owing to dispose miscellaneous part in the left and right sides of boiler check valve, so such perforate operation is difficult technically, even can also can in the perforate operation, spend high cost.

Therefore, in fact, be that the left and right sides with the position of representing with imaginary line K among Figure 12 is divided into 2 parts and makes, and take in the space and opening G1, G2 and H3, H4 of boiler check valve D1, D2 in formation after,, the boiler check valve of packing into forms valve body 100 while coupling together 2 parts by bolt V1, V2.But in such structure that is divided into two, the administration free that not only can cause the increase because of number of parts to produce increases and Fabrication procedure complicated, and also has problems aspect intensity.

Summary of the invention

Therefore, the object of the present invention is to provide a kind of integral body can cut down number of parts and can keep high-intensity four-loop protection valve for Construction integration.

For achieving the above object; the four-loop protection valve of the 1st scheme of the present invention is characterised in that: form by possessing valve body; this valve body comprises: with ingress port bonded assembly Room the 1st; respectively via the 1st valve portion and the 2nd valve portion and aforementioned the 1st Room bonded assembly the 1st output port and the 2nd output port; respectively via the 1st boiler check valve portion and the 2nd boiler check valve portion and aforementioned the 1st output port and the 2nd output port bonded assembly Room the 2nd; respectively via the 3rd valve portion and the 4th valve portion and aforementioned the 2nd Room bonded assembly the 3rd output port and the 4th output port; aforementioned valve body is formed by individual; this individual is with the mode that forms respectively the 1st main part that extends along the 1st direction of principal axis and the 2nd direction of principal axis and the 2nd main part shape at curve place integrally bending, and the boiler check valve that is used to be provided with aforementioned the 1st boiler check valve portion and the 2nd boiler check valve portion is formed at the position that can not touch from the outer wall of aforementioned curve via miscellaneous part with opening.

Again, the four-loop protection valve of the 2nd scheme of the present invention, it is characterized in that: have valve body, this valve body comprises: with ingress port bonded assembly Room the 1st, respectively via the 1st valve portion and the 2nd valve portion and aforementioned the 1st Room bonded assembly the 1st output port and the 2nd output port, respectively via the 1st boiler check valve portion and the 2nd boiler check valve portion and aforementioned the 1st output port and the 2nd output port bonded assembly Room the 2nd, respectively via the 3rd valve portion and the 4th valve portion and aforementioned the 2nd Room bonded assembly the 3rd output port and the 4th output port, aforementioned the 1st valve portion and the 2nd valve portion, the 1st valve body separately and the 2nd valve body are urged on the 1st valve seat and the 2nd valve seat always, and on closing by the direction of the aforementioned connection that is connected to form by the application of force, at the aforementioned the 1st indoor certain pressure that reaches when above, aforementioned the 1st valve body and the 2nd valve body leave the 1st valve seat and the 2nd valve seat respectively and open, and can be opened into and can be communicated with aforementioned the 1st output port and the 2nd output port respectively; Aforementioned the 1st boiler check valve portion, its the 1st check valve body is urged on the 1st non-return valve seat, when aforementioned the 1st valve portion opens, aforementioned the 1st check valve body leaves the 1st non-return valve seat and can be opened into and can be communicated with aforementioned Room the 2nd, aforementioned the 2nd boiler check valve portion, its the 2nd check valve body is urged on the 2nd non-return valve seat, and when opening in aforementioned the 2nd valve portion, aforementioned the 2nd check valve body leaves the 2nd non-return valve seat and can be opened into and can be communicated with aforementioned Room the 2nd; Aforementioned the 3rd valve portion and the 4th valve portion, the 3rd valve body separately and the 4th valve body are urged on the 3rd valve seat and the 4th valve seat and on closing by the direction of the aforementioned connection that is connected to form by the application of force always, at the aforementioned the 2nd indoor certain pressure that reaches when above, aforementioned the 3rd valve body and the 4th valve body leave the 3rd valve seat and the 4th valve seat respectively and can be opened into and can be communicated with aforementioned the 3rd output port and the 4th output port respectively; Aforementioned valve body is formed by individual, this individual is with the mode that forms respectively the 1st main part that extends along the 1st direction of principal axis and the 2nd direction of principal axis and the 2nd main part shape at curve place integrally bending, and the boiler check valve that is used to be provided with aforementioned the 1st boiler check valve portion and the 2nd boiler check valve portion is formed at the position that can not touch from the outer wall of curve via miscellaneous part with opening.

According to the 1st scheme of the present invention or the 2nd scheme, needn't be as in the past valve body be cut apart for formation is provided with the hole that boiler check valve uses, can directly carry out the perforate operation from the outer wall of this curve of the valve body that constitutes by individual with boring to wait.Therefore, can provide and do not increase number of parts and kept high-intensity valve body, i.e. four-loop protection valve.

Again, the four-loop protection valve of the 3rd scheme of the present invention is the four-loop protection valve that has following feature in the above-mentioned the 1st or the 2nd scheme, and promptly aforementioned curve is crooked on the 1st direction of principal axis direction vertical with the 2nd direction of principal axis.According to this programme, can be on the 1st direction of principal axis or the 2nd direction of principal axis easily form the boiler check valve opening with boring etc. from the outer wall of curve.

Again, the four-loop protection valve of the 4th scheme of the present invention is in the above-mentioned the 1st or the 2nd scheme, and the four-loop protection valve with following feature, promptly aforementioned curve bend to the 1st direction of principal axis and the 2nd direction of principal axis with oblique-angle intersection.According to this programme, the variety of the global shape of four-loop protection valve has obtained expansion, and can set the 1st direction of principal axis and the 2nd axial intersecting angle according to use.

Again; the four-loop protection valve of the 5th scheme of the present invention is in above-mentioned the 2nd～the 4th arbitrary scheme; four-loop protection valve with following feature; be that aforementioned the 1st valve portion and the 2nd valve portion are disposed near the 1st end of leaving aforementioned curve; and have the 1st valve body and the 2nd valve body that can on the direction vertical, move with the face that forms by aforementioned the 1st direction of principal axis and the 2nd direction of principal axis; aforementioned the 3rd valve portion and the 4th valve portion are disposed near the 2nd end of leaving aforementioned curve, and have the 3rd valve body and the 4th valve body that can move on the direction vertical with the face that is formed by aforementioned the 1st direction of principal axis and the 2nd direction of principal axis.According to this programme, can provide compact on the whole four-loop protection valve.

Again; the four-loop protection valve of the 6th scheme of the present invention is in arbitrary scheme of the above-mentioned the 2nd～the 5th; four-loop protection valve with following feature; promptly the 1st valve portion, the 2nd valve portion, the 3rd valve portion and the 4th valve portion are provided with barrier film, this barrier film separate in the valve body the pressure medium stream zone that constitutes by aforementioned Room the 1st and Room the 2nd etc. and to aforementioned the 1st valve body in these each valve portions, the 2nd valve body, the 3rd valve body, and the 4th valve body to the configuring area of each force application mechanism of the closing direction application of force.According to this programme, can make the structure of each valve portion become simple.

Again; the four-loop protection valve of the 7th scheme of the present invention is in above-mentioned the 6th scheme; four-loop protection valve with following feature; be aforementioned the 1st valve portion and the 2nd valve portion in the aforementioned pressure medium stream zone of aforementioned barrier film one side, also be provided with aforementioned the 1st valve seat and the 2nd valve seat and contact, leave and open and close the 1st of pressure medium stream and strengthen valve portion and the 2nd reinforcement valve portion.Thus, can precision carry out flow direction with respect to pressure medium well and be disposed at than the 3rd valve portion and the 4th valve portion, can precision realize the single-piece on-off action well with this more by aforementioned the 1st valve portion of upstream one side and the on-off action of the 2nd valve portion.

According to the present invention, needn't be as in the past valve body be cut apart for formation is provided with the hole that boiler check valve uses, can directly carry out the perforate operation from the outer wall of this curve of the valve body that constitutes by individual with boring to wait.Therefore, can provide and have the four-loop protection valve that does not increase number of parts and kept high-intensity valve body.

Description of drawings

Fig. 1 is the block diagram of four-loop protection valve of the present invention.

Fig. 2 is the scheme drawing that is used to illustrate the action of four-loop protection valve.

Fig. 3 (a), Fig. 3 (b) for the expression four-loop protection valve drive valve the time the action specification figure of 2 states.

Fig. 4 (a) is that figure Fig. 4 (b) of IV (a) the direction observation four-loop protection valve from Fig. 1 is the figure that observes four-loop protection valve from IV (b) direction of Fig. 1, and Fig. 4 (c) is the C-C line cutaway view of Fig. 4 (b).

Fig. 5 is the figure that observes four-loop protection valve from the V direction of Fig. 1.

Fig. 6 is the figure that observes four-loop protection valve from the VI direction of Fig. 1.

Fig. 7 is the figure that observes four-loop protection valve from the VII direction of Fig. 1.

Fig. 8 is the VIII-VIII line cutaway view of Fig. 7.

Fig. 9 is the IX-IX line cutaway view of Fig. 4 (a).

Figure 10 is the X-X line cutaway view of Fig. 7.

Figure 11 is the loop diagram of four-loop protection valve.

Figure 12 is the longitudinal cutting view of four-loop protection valve in the past.

The specific embodiment

Below, describe based on the working of an invention mode of accompanying drawing the application.Fig. 1 is the block diagram of four-loop protection valve of the present invention.Fig. 2 is the scheme drawing that is used to illustrate the effect of four-loop protection valve.Fig. 3 (a), Fig. 3 (b) for the expression four-loop protection valve drive valve the time the action specification figure of 2 states.Fig. 4 (a), Fig. 4 (b), Fig. 4 (c) are respectively IV (a) direction from Fig. 1 and observe the figure of four-loop protection valve, observe the figure of four-loop protection valve and the C-C line cutaway view of Fig. 4 (b) from IV (b) direction of Fig. 1.

Fig. 5 is the figure that observes four-loop protection valve from the V direction of Fig. 1.Fig. 6 is the figure that observes four-loop protection valve from the VI direction of Fig. 1.Fig. 7 is the figure that observes four-loop protection valve from the VII direction of Fig. 1.Fig. 8 is the VIII-VIII line cutaway view of Fig. 7.Fig. 9 is the IX-IX line cutaway view of Fig. 4 (a).Figure 10 is the X-X line cutaway view of Fig. 7.Figure 11 is the loop diagram of four-loop protection valve.

As shown in Figure 1; four-loop protection valve 1 (being designated hereinafter simply as valve 1) constitutes based on valve body 3; in the present embodiment; valve body 3 is following formation, is about to make to become the individual that forms by integrally formed along the 1st main part 9 and the 2nd main part 11 of the 1st direction of principal axis 5 that is in vertical relation and 7 extensions of the 2nd direction of principal axis respectively.The raw MAT'L of valve body 3 is enumerated polyacetal (POM) material of aluminum, synthetic resin or nylon material etc.As shown in Figure 1, the 1st main part 9 and the 2nd main part 11 form as one at curve 13 places.Therefore, in the present embodiment, valve body 3, promptly valve 1 whole work becomes the individual of the shape of L oxbow, and utilizes injection moulding method to form.The valve body 3 of the individual structure that is made of such curved shape is a unexistent structure in the past this valve, and becomes the part that feature of the present invention constitutes, and is elaborated in the back about this point.

In Fig. 1, mark 4A represents the lid of the 1st valve portion 25 described later, and mark 4B represents the lid of the 2nd valve portion 27 described later, and mark 4C represents the lid of the 3rd valve portion 67 described later, and mark 4D represents the lid of the 4th valve portion 69 described later.

Before explanation feature of the present invention constitutes, at first the using method (effect) of this valve 1 is described based on Fig. 2.As shown in Figure 2, this valve 1 has constituted the part of the air pressure feed mechanism of vehicle, as an example, will from air compressor 15 supply with and via the pressurized air of air dryer 17 be assigned to 4 Air pressure accumulation device 19a～19d via valve 1 of the present invention.And valve 1 has following function, causes decompression even promptly escape of air takes place in any one in 4 Air pressure accumulation device 19a～19d, and other Air pressure accumulation devices are not reduced pressure.

Secondly, based on the action specification figure of Fig. 3 basic comprising and its operating principle of this valve 1 are described.As shown in Figure 3, valve 1 has Room 21 the 1st and Room 23 the 2nd in inside, and Room 21 the 1st is connected on the ingress port 22.In Room 21 the 1st, be formed with 2 valve portions, i.e. the 1st valve portion 25 and the 2nd valve portion 27.The 1st valve portion 25 has the 1st movable valve body 29 and the 1st valve seat 31, the 1 valve bodies 29 are pushed on the 1st valve seat 31 by the coil spring 41 as force application part always; The 2nd valve portion 27 has the 2nd movable valve body 30 and the 2nd valve seat 33, the 2 valve bodies 30 are pushed on the 2nd valve seat 33 by the coil spring 41 as other force application part always.

When above (become certain pressure) left each

valve seat

31,33 when aforementioned the 1st valve body 29 and the pressure of the 2nd valve body 30 in Room 21 the 1st became also bigger than said spiral spring 41 applied forces, and opened each valve portion 25,27.In Fig. 3, mark 37 expression atmospheric air open ports, this atmospheric air open port 37 in order to coil spring chamber 39 to atmosphere opening.

Downstream in the 1st valve portion 25 and the 2nd valve portion 27 is formed with the 1st output port 47 and the 2nd output port 49 via the 1st stream 43 and the 2nd stream 45 respectively.On the proper site of aforementioned the 1st stream 43 that links to each other with the 1st output port 47 and the 2nd output port 49 and the 2nd stream 45, be formed with the 1st boiler check valve portion 51 and the 2nd boiler check valve portion 53 respectively.The 1st boiler check valve portion 51 has the 1st movable check valve body 55 and the 1st non-return valve seat 57, the 1 check valve bodies 55 are pushed on the 1st non-return valve seat 57 by coil spring 42 application of forces; The 2nd boiler check valve portion 53 has the 2nd movable check valve body 59 and the 2nd non-return valve seat 61, the 2 check valve bodies 59 are pushed on the 2nd non-return valve seat 61 by other coil spring 42 application of forces.The downstream of the 1st boiler check valve portion 51 and the 2nd boiler check valve portion 53 is converged at the 3rd stream 63 places, and the 3rd stream 63 is communicated with Room 23 the 2nd.The 1st check valve body 55 and the 2nd check valve body 59 only just can leave the 1st non-return valve seat 57 and the 2nd non-return valve seat 61 at the pressure at the 1st output port 47 and the 2nd output port 49 places during greater than the pressure in the Room 23 the 2nd respectively, open each boiler

check valve portion

51,53.

In Room 23 the 2nd, be formed with 2 valve portions, i.e. the 3rd valve portion 67 and the 4th valve portion 69.The 3rd valve portion 67 has the 3rd movable valve body 71 and the 3rd valve seat 73, the 3 valve bodies 71 are urged on the 3rd valve seat 73; The 4th valve portion 69 has the 4th movable valve body 75 and the 4th valve seat 77, the 4 valve bodies 75 are urged on the 4th valve seat 77.The 3rd valve body 71 and the 4th valve body 75 have and above-mentioned the 1st valve body 29 and the same formation of the 2nd valve body 30.

Downstream in the 3rd valve portion 67 and the 4th valve portion 69 is formed with the 3rd output port 83 and the 4th output port 85 via the 4th stream 79 and the 5th stream 81 respectively.The 1st output port the 47, the 2nd output port the 49, the 3rd output port 83 and the 4th output port 85 are connected with Air pressure accumulation device 19a～19d of Fig. 2 respectively.And in Fig. 3,

aforementioned cover

4A, 4B, 4C, the 4D of aforementioned each

valve portion

25,27,67,69 have omitted diagram.

More than be that valve 1 in-to-in groundwork constitutes, below its effect described.Supplying with under the situation of air pressure to Air pressure accumulation device 19a～19d from air compressor 15, shown in Fig. 3 (a), because the pressure at ingress port 22 places surpasses coil spring 41 applied forces of closing the 1st valve portion 25 and the 2nd valve portion 27, so the 1st valve body 29 and the 2nd valve body 30 leave each

valve seat

31,33, pressurized air is supplied among Air pressure accumulation device 19a, the 19b by the 1st output port 47 and the 2nd output port 49.And, this pressure also acts in the 1st boiler check valve portion 51 and the 2nd boiler check valve portion 53 and these

valve portions

51,53 is opened, the 3rd valve body 71 of the 3rd valve portion 67 and the 4th valve portion 69 and the 4th valve body 75 leave each

valve seat

73,77 thus, and pressurized air also is supplied among Air pressure accumulation device 19c, the 19d by the 3rd output port 83 and the 4th output port 85.When the work of air compressor 15 stopped, each

valve portion

25,27,67,69 and each boiler

check valve portion

51,53 closed, and were in the state that certain air pressure is arranged that holds in Air pressure accumulation device 19a～19d.

Suppose to have formed the hole that causes escape of air on Air pressure accumulation device 19a in compressed-air actuated supply process as described above, the pressure at the 1st output port 47 places that then are communicated with Air pressure accumulation device 19a can become lower than the pressure at the 2nd output port the 49, the 3rd output port the 83, the 4th output port 85 places that are communicated with other Air pressure accumulation devices 19b～19d because of escape of air.When air compressor 15 is worked under this state, it is bigger than the pressure that acts on the 1st valve body 29 from the 1st output port 47 (because escape of air and pressure decay) that the pressure that acts on the 2nd valve body the 30, the 3rd valve body 71 and the 4th valve body 75 from each

output port

49,83,85 side can become, so, shown in Fig. 3 (b), the 2nd valve body the 30, the 3rd valve body 71 and the 4th valve body 75 can be worked in the mode of earlier opening each

valve portion

27,67,69 than the 1st valve body 29.Therefore, about Air pressure accumulation device 19b～19d, can be than preferentially filling pressurized air of Air pressure accumulation device 19a, thus can keep this function.On the other hand, the 1st valve portion 25 also can supply with pressurized air to Air pressure accumulation device 19a opening thereafter, but owing to be subjected to the influence of aforementioned escape of air, the pressure at the 1st output port 47 places can descend moment, and closes the 1st valve portion 25 immediately.

The chaufeur of escape of air of perceiving Air pressure accumulation device 19a by warning light etc. during near petrol service station etc. is located to drive, can utilize the air pressure of Air pressure accumulation device 19b～19d to move under this state.Thus, can repair the escape of air of Air pressure accumulation device 19a at petrol service station.

Secondly, (b) (c), Fig. 5 to Figure 11 describe the feature formation of valve 1 of the present invention based on Fig. 1, Fig. 4 (a).And, for the part of basic comprising identical function illustrated in fig. 3, the counterpart among each figure is annotated with same mark, and is omitted its explanation.As previously mentioned, valve body 3 is following shape, promptly carries out bending to form respectively the 1st main part 9 that extends along the 1st direction of principal axis 5 and the 2nd direction of principal axis 7 and the mode of the 2nd main part 11 as a whole at curve 13 places.

And as Fig. 1, Fig. 4 (c) and shown in Figure 7, the boiler check valve that is used to be provided with above-mentioned the 1st boiler check valve portion 51 and the 2nd boiler check valve portion 53 is formed at the position that can not touch from the outer wall 87 of curve 13 via miscellaneous part with opening 54,54.That is, this boiler check valve is formed at and can directly carries out on the position of perforate operation with brill etc. from the outer wall 87 of curve 13 with opening 54,54.As Fig. 4 (c) and shown in Figure 7, this boiler check valve all forms with aforementioned Room 21 the 1st with opening 54,54 and is communicated with.And then similarly, can directly not carry out on the position of perforate operation with boring to wait from another outer wall 88 of curve 13 via miscellaneous part, be formed with and be used to realize the boiler check valve usefulness opening 64,64 that is communicated with aforementioned Room 23 the 2nd.Two boiler check valve are with opening 54 and 64 yes forms in the mode that is communicated with.As shown in Figure 8, the 1st boiler check valve portion 51 and the 2nd boiler check valve portion 53 are provided on the curve 13 with same formation.

By adopting such formation, this boiler check valve is cut apart parts with opening 54 and 64 openings that needn't use for the formation check valve configuration as in the past, can be direct with formation such as brills from the

outer wall

87,88 of curve 13 with carrying out the perforate operation.And, by in such perforate part on set this

boiler check valve

51,53, can divide and cede territory this valve body 3 is formed individuals.Thus, can provide by not increasing number of parts and having kept the four-loop protection valve that high-intensity valve body 3 constitutes.Again, in Fig. 4 (c) and Fig. 7, mark 72 is for stopping up the steel ball of boiler check valve with the inlet of opening 64, and in Fig. 8,

mark

74,74 is for stopping up the retaining ring of boiler check valve with the inlet of opening 54.Again, mark 76 is the boiler check valve drg, and mark 78 is sealing O type ring.Figure 11 is the figure with Fig. 1～four-loop protection valve of the present invention shown in Figure 10 is represented with loop diagram.

And, in the present embodiment, extremely shown in Figure 10 as Fig. 8, aforementioned the 1st the 27, the 3rd valve portion 67 of the 25, the 2nd valve portion of valve portion and the 4th valve portion 69 are provided with barrier film 35, this barrier film separate pressure medium (air) the stream zone that constitutes by aforementioned Room 21 the 1st and Room 23 the 2nd etc. in the valve body 3 and dispose in these each valve portions above-mentioned the 1st valve body the 29, the 2nd valve body the 30, the 3rd valve body the 71, the 4th valve body 75 and to the configuring area of these valve bodies to each coil spring 41 of the closing direction application of force.And, as Fig. 8 and shown in Figure 9, aforementioned the 1st valve portion 25 and the 2nd valve portion 27 are provided with aforementioned the 1st valve seat 31 and the 2nd valve seat 33 and contact, leave the 1st reinforcement valve portion 101 and the 2nd reinforcement valve portion 107 that open and close the pressure medium stream also in the aforementioned pressure medium stream zone of aforementioned barrier film 35 side.The 1st strengthens valve portion 101 and the 2nd strengthens valve portion 107 both be same configuration, by valve body 101, be arranged on jam pot cover 102 on this valve body 101, be provided in flow regulating valve 103 and throttling springs (orifice spring) 104 formations in this valve body 101.Jam pot cover 102 parts are urged on

aforementioned valve seat

31,33 and stop up stream.

Thus, can precision carry out flow direction with respect to pressure medium well and be disposed at than the 3rd valve portion 67 and the 4th valve portion 69, can precision realize the single-piece on-off action well with this more by aforementioned the 1st valve portion 25 of upstream one side and the on-off action of the 2nd valve portion 27.

Although in the above-described embodiment, the 1st direction of principal axis 5 is vertical with the 2nd direction of principal axis 7, but can realize in the scope of boiler check valve with the perforate operation of openings that curve also can bend to the 1st direction of principal axis and the 2nd direction of principal axis with oblique-angle intersection from the

outer wall

87,88 of curve 13.

Again, in the above-described embodiment, aforementioned the 1st valve portion 25 and the 2nd valve portion 27 are disposed near the 1st end 91 of leaving aforementioned curve 13, and have the 1st valve body 29 and the 2nd valve body 30 that can on the direction vertical, move with the face that forms by aforementioned the 1st direction of principal axis 5 and the 2nd direction of principal axis 7, aforementioned the 3rd valve portion 67 and the 4th valve portion 69 are disposed near the 2nd end 89 of leaving aforementioned curve 13, and have the 3rd valve body 71 and the 4th valve body 75 that can move on the direction vertical with the face that is formed by aforementioned the 1st direction of principal axis 5 and the 2nd direction of principal axis 7.By adopting such formation, can provide compact on the whole valve 1.

Claims

1. four-loop protection valve, form by possessing valve body, this valve body comprises: with ingress port bonded assembly Room the 1st, respectively via the 1st valve portion and the 2nd valve portion and aforementioned the 1st Room bonded assembly the 1st output port and the 2nd output port, respectively via the 1st boiler check valve portion and the 2nd boiler check valve portion and aforementioned the 1st output port and the 2nd output port bonded assembly Room the 2nd, respectively via the 3rd valve portion and the 4th valve portion and aforementioned the 2nd Room bonded assembly the 3rd output port and the 4th output port; It is characterized in that: aforementioned valve body is formed by individual, this individual is with the mode that forms respectively the 1st main part that extends along the 1st direction of principal axis and the 2nd direction of principal axis and the 2nd main part shape at curve place integrally bending, and the boiler check valve that is used to be provided with aforementioned the 1st boiler check valve portion and the 2nd boiler check valve portion is formed at the position that can not touch from the outer wall of aforementioned curve via miscellaneous part with opening.

2. four-loop protection valve as claimed in claim 1, it is characterized in that: aforementioned the 1st valve portion and the 2nd valve portion, the 1st valve body separately and the 2nd valve body are urged on the 1st valve seat and the 2nd valve seat and on closing by the direction of the aforementioned connection that is connected to form by the application of force always, at the aforementioned the 1st indoor certain pressure that reaches when above, aforementioned the 1st valve body and the 2nd valve body leave the 1st valve seat and the 2nd valve seat respectively, can be communicated with aforementioned the 1st output port and the 2nd output port respectively thereby can be opened into; Aforementioned the 1st boiler check valve portion, its the 1st check valve body is urged on the 1st non-return valve seat, when aforementioned the 1st valve portion opens, aforementioned the 1st check valve body leaves the 1st non-return valve seat and can be opened into and can be communicated with aforementioned Room the 2nd, aforementioned the 2nd boiler check valve portion, its the 2nd check valve body is urged on the 2nd non-return valve seat, and when opening in aforementioned the 2nd valve portion, aforementioned the 2nd check valve body leaves the 2nd non-return valve seat and can be opened into and can be communicated with aforementioned Room the 2nd; Aforementioned the 3rd valve portion and the 4th valve portion, the 3rd valve body separately and the 4th valve body are urged on the 3rd valve seat and the 4th valve seat and on closing by the direction of the aforementioned connection that is connected to form by the application of force always, at the aforementioned the 2nd indoor certain pressure that reaches when above, aforementioned the 3rd valve body and the 4th valve body leave the 3rd valve seat and the 4th valve seat respectively and can be opened into and can be communicated with aforementioned the 3rd output port and the 4th output port respectively.

3. four-loop protection valve as claimed in claim 1 or 2 is characterized in that: it is vertical with the 2nd direction of principal axis that aforementioned curve bends to the 1st direction of principal axis.

4. four-loop protection valve as claimed in claim 1 or 2 is characterized in that: aforementioned curve bends to the 1st direction of principal axis and the 2nd direction of principal axis with oblique-angle intersection.

5. four-loop protection valve as claimed in claim 1 or 2; it is characterized in that: aforementioned the 1st valve portion and the 2nd valve portion are disposed near the 1st end of leaving aforementioned curve; and have the 1st valve body and the 2nd valve body that can on the direction vertical, move with the face that forms by aforementioned the 1st direction of principal axis and the 2nd direction of principal axis; aforementioned the 3rd valve portion and the 4th valve portion are disposed near the 2nd end of leaving aforementioned curve, and have the 3rd valve body and the 4th valve body that can move on the direction vertical with the face that is formed by aforementioned the 1st direction of principal axis and the 2nd direction of principal axis.

6. four-loop protection valve as claimed in claim 1 or 2; it is characterized in that: aforementioned the 1st valve portion, the 2nd valve portion, the 3rd valve portion and the 4th valve portion are provided with barrier film, and this barrier film separates the pressure medium stream zone that is made of aforementioned Room the 1st and Room the 2nd etc. in the valve body and disposes aforementioned the 1st valve body in these each valve portions, the 2nd valve body, the 3rd valve body, the 4th valve body and to the configuring area of these valve bodies to each force application mechanism of the closing direction application of force.

7. four-loop protection valve as claimed in claim 6; it is characterized in that: aforementioned the 1st valve portion and the 2nd valve portion also are provided with aforementioned the 1st valve seat and the 2nd valve seat and contact, leave the 1st reinforcement valve portion and the 2nd reinforcement valve portion that open and close the pressure medium stream in the aforementioned pressure medium stream zone of aforementioned barrier film one side.