JPS5877986A - Actuator - Google Patents

Abstract

PURPOSE:To make it possible to improve the controlling property of the titled actuator by a method wherein two independent passages through which an operating fluid is returned from a pressure chamber to a storage chamber are formed and the pressure in the pressure chamber is varied by two stages. CONSTITUTION:When an electromagnetic valve 25 is closed by a signal from outside, a passage 24 is interrupted and the operating fluid within the pressure chamber 17 returns to the storage chamber 14. In this case, the sectional area of an orifice 21 provided in a passage 18 is smaller than that of a second orifice 26 and therefore, even when the discharge quantity of the fluid from an electromagnetic pump 13 is constant, the pressure in the pressure chamber 17 and the passage 18 increases so that a second responsive member 32 is displaced by a predetermined distance due to that pressure and a proportional valve 50 is opened to allow a fuel gas flow into a main burner connected to an outlet passage 43 to thereby start a main combustion operation. That is, the pressure in the pressure chamber 17 is varied by two stages so the controlling property of the actuator is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for transporting a working complex between a reservoir and a pressure stamp.
Pump ζ: Circulate one by one, ζn l: One pressure chamber I: It relates to an actuator that obtains a driving force for driving a load using the generated pressure.

In this type of 7-actuator 5, the pressure generated in the pressure chamber is controlled by the opening area of the orifice provided in the passage for returning the produced and ff bodies from the pressure chamber to the storage chamber. is proportional to the amount of working fluid pumped into each pressure chamber of the ms pump 1:L, and when this amount R is constant, n is proportional to the opening area of the orifice.

Therefore, if the responding body which is displaced by 1 in response to 1 pressure m circle is held at position II (2) in the middle of its movement range, rr#i
, 8m pump start/stop section: In addition, it is necessary to change the side of the opening of the iss pump's discharge cover or orifice 1. However, - the discharge cover of the remote pump, or orifice 4
It is easy and dangerous to change the opening area of the mouth.

``It is an object of this invention to provide an attachator t' that can change the pressure of a fluid flowing into a pressure chamber by a simple means.

1: An embodiment of the present invention using a flow rate control chain of the cutter-6: When applied, please refer to the drawings 11
2. Fig. 1 (=Flow control shown @kFJ.

It consists of a pressure generating section A that generates oil pressure, a conversion section B that converts this oil pressure into a displacement C, and a control section C that drives this conversion section B one by one.In this example, Combustor, such as a water heater: Controls the supply of fuel gas.
U (=Structure M Samata 151E it 11J Shows the scissor koji.

It has a pressure generating part Atj and a l1m pump 13 consisting of an actuating part 12 passing through central holes 11, 1 and 7 in the pressure generating part Atj.

This 11iI pump 13, the savings is 114 yen at the station @f41r
Hydraulic oil is passed from 1815 into the working part 12 1:@ drawn, followed by the passage 16 1 inside the pressure chamber 11 C: pumped 1
U1: The first chamber 118 is equipped with a pressure chamber 11 and an orifice 21 having a loud opening surface Stt.
If you connect to Nasai 1 storage 14, it will be %shi:, Communication Ii! 11
It also communicates with the second pressure chamber 20 through 9. When the tile pump 13 is operating (= 1 working oil reservoir N14 passage 15° operating section 121 passage 16, pressure chamber 1
7s? II.
The pressure of the discharge flow I1111C of the a pump 13 is in the pressure chamber 17.
occurs within. (1) This pressure is also transmitted through the passage 19 to the acid 1 pressure 'M20.
an, this bypass J41M522 yen C:, -magnetic pump 1
The canister is opened only while 3 operates normally and 1 is maintained. However, when the operation of the 111m pump 13 stops after the pressure in the 1st pressure chamber 17 rises, the bypass valve 23 moves to the 1st (: open position), and the pressure in the 1st pressure chamber 17 increases in ζ1. is temporarily released.

Furthermore, a second passage 24 is formed between the pressure chamber 11 and the storage 1i114 in relation to the first passage 18 and the lid row. Magnetic valve 25
And the orifice 26 of 12 which has an open low S chamber which is larger than the orifice 21x of 1 $11 is generally rat.

Pressure generating section AC: has one adjacent converting section B, and two response bodies 31 and 32. ml response body 31t
:l, pressure 1iii! Inside of 17 1: 1 in contact via bellofram C: 2 movable in axial direction Tip 6 of rod 33: fixed 8rt, spring 34 (: x
Ri1 pressure i! 1 is biased toward the inside of the pressure chamber 20 via the bellofram.
Contact 1 and 6: Axial direction - 2 contact freely movable lot 3
5 tip - 2 supports 6t and spring 36C:
Yotsu 1 pressure ii! 20 inside C: There is no pressure field for 1.

Therefore, when the pressure in the pressure springs 11 and 20 increases, the reaction bodies 31 and 32Fi+71-t'fl springs 34 and 36C move by 1 and the pressure becomes lower).h returns to its original position. -6 = return operation, the pressure receiving surface [jI
Jl (D response body 311s 4 /J-sa<, but 1s
How does the second reaction body 32 start to move?The first reaction body 31
Higher than Noso n.

Control part C, input route 1112141. There are 42 connecting passageways, 43 passageways, and 42 connecting passageways (184 yen).
1 and M communication 1142, 1 and C2 communicate with each other through the middle hole of the valve seat 44, and a spring opening/closing valve 45 is pressed against the valve seat 44 by the action of a spring 46 11. (shi1 open/close square 45
The square rod F47Fi that supports the rod 33 is in contact with the tip of the rod 33. In addition, the communication passage 42 and the exit passage 43
The center hole of the valve seat 48 communicates with the valve seat 481 and the spring 49.
f: There are 8t11 tangents.

(In the middle of 1 proportional valve 50, 1 LJ capital is installed and 5 rods are installed.)
1fl, (1) is in contact with the tip of the lot '36 in the direction of 1. This proportional valve 50 is within the range between the valve seat 48 - the fully open can in close contact with the fully open can - and the most fully open can. By moving in 1, exit 41118434 from communication passage 42
: S is achieved by controlling the flow rate of a controlled fluid, such as ferrous sludge, proportionally.

Next C: Two operations C will be explained. From an external drive circuit (not shown) to the coil 11 of the II pump 13.

When a drive signal of an arbitrary waveform such as a half-cross waveform or a square wave is supplied, the bypass valve 23
closes the bypass passage, and the working fluid in the W storage chamber 14 yen flows through the passage 15.11! The pump 13 and the pump 1816 are connected to a pressure chamber 1T in a pressure field. This and own solenoid valve 25F
i f! from outside! There are 1 or 11 in the corner. follow 1
The working fluid in the pressure chamber IT returns to the storage chamber 14 mainly through the 112 filters 1124 having the second orifice 26 with a large opening area, so that the pressure! The pressure inside 17 is constant as the discharge amount of the pump 13 is constant, and the pressure inside 61 is the same as that of the second
The pressure increases at a first pressure 1 defined by the opening area of the orifice 26 .

This pressure is passed through the passage 1119 to the second pressure chamber 20 (:
However, at this pressure, only the responsive body 31 of ml is displaced, and in this state, only the opening/closing valve 45 is opened. Communication passage 4
2 (: cap j1 shown) pilot burner 1: supply sr
〇 After the pilot burner's skin flames disappeared, - Usuiben 25
is a signal from the outside: 1 close. ζr ward = 1 121246 serial number 71. Therefore, the fluid passage 187' in the first pressure chamber 17 passes through the second inspection and returns to the first storage II prize 14. The opening area of the orifice 21 provided in this passage 18 is
! Since it is smaller than the opening area of the orifice 26 of J2,
Even if the discharge amount of the electromagnetic pump 13 is constant and the pressure chamber 17
and the pressure within 18 increases. This pressure τ second response body 32 is displaced by a predetermined distance 1life, one proportional valve 50 opens 1 at ζn, and fuel gas flows into the main burner (not shown) connected to the outlet passage 1I2143. Combustion opens #
J8t'. Further, in this state, by changing the control of the drive signal supplied to the coil 11C of the IIs pump 13, it is possible to proportionally control the discharge amount (1 is the position of the proportional valve 50).

In addition, when the tortoise valve 25 is open, only the on-off valve 45 is opened and the proportional valve 50 is closed.
, II 2 Figure 4: As shown, the 1st pressure chamber 11
! 2 pressure ml 20 t4 t11 112119
It is possible to provide a 11A valve 27 that operates alternately with the 1M, '46 valve 26, but it is 1% better to provide a 11B valve 27 with a valve 28 of the construction shown in Figures T and R3. In FIG. 3, 1, a diaphragm 63 is provided in the housing 61 to support a valve body 62 in the center, and the valve body 62 is located between the housing 61 and the diaphragm 63. Also, the spring 64
Due to the action of /S, the valve seat 65 provided on the housing 61 is pressed against the valve seat 65. In this state, the pressure is 1117
4: There is a movement between the continuous entry hole 66 and the diaphragm chamber 67. Here, the pressure on the inlet boat 66 side acts on the pressure receiving surface of the valve body 62 in the direction of suppressing the spring 61.
2 springs 61 (= resisting 1 valve seat 65 @rt, this 1
Operating body diaphragm m 6 in Yotsu 1 artificial boat 66
7 (: enter, then exit port 68 through 1 pressure 112
0tllll. The pressure receiving area of the diaphragm 63 is
5a: Since it is comfortably larger than the pressure receiving surface of the valve body 62 in the state where it is in contact, the force on the valve body 62 is only 199 m65 t.
:At the same time as 11t, the die 7 flamm 63 is suddenly displaced and moved in the direction away from the valve body 62 and the valve seat 65.
In this state, even the pressure 1 when the valve body 62 starts to open is impressively low, and the pressure 4 is maintained at 1. In other words, the ms water pump 3 operates, and the pressure inside the pressure 1117 rises, causing the pressure to rise to 1. When this pressure spreads to 11141 general units, first the first response body 31 is displaced and the opening/closing f
f454-position 112 moves. ζt1≦: Yotsu1 fuel gas flows from inlet port #841 to communication path 42 via R11,
Light the art' on the pilot burner. However, in this state, the valve 18 is closed, so the pressure chamber 20 of R2
Yen pressure is low.

Next 4: When the pressure inside the pressure chamber 17 further increases and the pressure between the valve 28 and the pressure C:s is reached, the valve body 62t'i suddenly a
: After moving to the open position, it is held at this point 116, so the working fluid passes through the passages 16 and 19.
(: i 1 person, then passage 21 Amakyo 1 storage trade ml 4 (2 return) 4 2, the same pressure develops in pressure chamber 20 I: pressure chamber 1T. Therefore, 1 reaction body 32 The pressure is reduced accordingly, and the proportional valve 50 is operated proportionally, and the flow rate of the fuel gas supplied from the communication passage 42 to Taguchi Dori 11143 to the main burner 1 is proportionally controlled. Conversely, in the process where the pressure inside the pressure chamber 17 decreases,
When this pressure is almost zero, the valve 28--opened 1--is above 0, so that the pressure chamber is stored in the pressure chamber 11; In the Confucian tradition, a tortoise valve is provided, and each of the seven orifices has an orifice with a different opening area, and an orifice with a larger opening area is provided. If the discharge amount of a Cl8m pump is constant, it can easily change to two levels, such as the pressure in the pressure chamber.

However, move the C-responsive body to the position of the strongest foot within its movement range.
1: Correct @ (: Holding it becomes useful, and controllability improves considerably.

Queen Kao! Although the example shows a single actuator for controlling a valve, it is not impossible to apply the same method to other controlled objects of the damper 7.

[Brief explanation of the drawing]

Fig. 1 shows fN amount control equipped with an actuator according to an embodiment of the present invention! Fig. 2 is a vertical cross-sectional view of the actuator according to another example of the dormitory, and Fig. 3 is a vertical cross-sectional view of a valve that can be applied to the actuator shown in Fig. 12. A...Pressure generation part, B...Conversion part, C...Control a part, 11...Coil, 13...18'm pump, 14
...Storage chamber, 17...Pressure chamber, 18.19...I
Il path, 20... Pressure chamber, 21... Oriais, 2
3...(1 pass valve, 24...A121.25...
・IIs valve, 26...orifice, 27...ll1
m valve, 28... valve, 31.32... response body, 41.
...Inlet passage, 42...Communication passage, 43...Outlet passage, 45...Opening/closing valve, 50...Proportional valve, 61...
]・Uzing, 62. ...Valve body, 63...Diaphragm. Patent W Sannin Yamatake Honeywell Tai Ni Public Company Representative Sanjin Patent Attorney Hiroshi Issu Weight Same stone 1mg! ljlIW4ノ Figure 1 @ (Diagram Procedure Amendment (Method) % Formula % 1982 Permit Application No. 175318) 2. Name of the invention Actuator 3. Relationship with the case of the person making the amendment Patent applicant 4. Address of the agent 2-1' Yoyogi, Shibuya-ku, Tokyo 151
11112>) 5th floor, 7th floor of Mokuzai Building, date of amendment order Showa month 1 (shipment) engraving of drawings (contents no Kf history)

Claims (1)

[Claims] (11: an atoll pump that pumps the working fluid in the storage wi! to the pressure chamber; and an atoll pump that pumps the working fluid in the pressure chamber to the storage chamber 1: j
! The second passage was machined for $11, the first orifice was installed in the first passage, and the second passage 11! ! A cockpit valve for opening and closing, and a 2m long cockpit valve installed in the second passageway.
1J, which has an opening area larger than the orifice of If.
7 actuator 0 (11 the pressure chamber (11), which is equipped with a second pressure chamber through which one communication is made via two passages, and a response body that is displaced by one in response to the pressure in the pressure chamber ζ); 8 yen pressure 4: 1 yen depending 1
2. The response body and Nasara l: Soe 1 patent Sabu's 1111
7 Kutaeta 0 ゛ (passage of 31 upper level plow 1) according to item 111 Connecting the second pressure chamber and the storage chamber, and connecting the pressure chamber and the second pressure chamber. 7. The 7-stage actuator according to claim 1, which includes the following.