CN101504086A - Restrictive one-way valve, its control method and use - Google Patents
Restrictive one-way valve, its control method and use Download PDFInfo
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- CN101504086A CN101504086A CNA2009100374437A CN200910037443A CN101504086A CN 101504086 A CN101504086 A CN 101504086A CN A2009100374437 A CNA2009100374437 A CN A2009100374437A CN 200910037443 A CN200910037443 A CN 200910037443A CN 101504086 A CN101504086 A CN 101504086A
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Abstract
The invention relates to a restrictive one-way valve, a method for controlling the same and application thereof. The restrictive one-way valve comprises a first tube body with a first open end and a second open end; the inside of the first tube body is provided with a first valve consisting of a valve seat body and a slide valve; the valve seat body is provided with a first gas flowing outlet; a first gas flowing inlet is arranged between the outside diameter of the slide valve and the inside diameter of the first tube body; the slide valve is provided with a second valve; the second valve comprises a second gas flowing inlet arranged at one end of the slide valve and a second gas flowing outlet arranged at the other end of the slide valve; the first open end, the first gas flowing inlet and the second gas flowing inlet are communicated; the second open end, the first gas flowing outlet and the second gas flowing outlet are sequentially communicated; and the stiffness coefficient of a first spring is less than that of a second spring. The restrictive one-way valve has low manufacturing cost and high reliability and can effectively eliminate the collision sound of a sliding sheet generated when a capacity control type compressor controls the compression of a cylinder.
Description
Technical field
The present invention relates to a kind of defferential valve, particularly a kind of restrictive one-way valve and controlling method and application.
Background technique
The defferential valve that moves by a pressure is used as the controlling component of fluid very early.But, carry in the compressor of air conditioner etc., when the compression of capacity controlled compressor control cylinder, bump easily sound or the slide plate disrepair phenomenon occurs of the defferential valve slide plate of two-stage action.
Summary of the invention
Purpose of the present invention aim to provide a kind of simple and reasonable, fabricating cost is low, reliability is high, can effectively eliminate the slide plate bruit de froissement, the restrictive one-way valve of avoiding the slide plate breakage and controlling method and the application that take place when the compression of capacity controlled compressor control cylinder, to overcome deficiency of the prior art.
A kind of restrictive one-way valve by this purpose design, comprise first body that has first opening end and second opening end, be provided with first valve that constitutes by valve body and slide-valve in first body, be crimped with first spring between slide-valve and the valve body, be provided with the block that prevents that slide-valve from deviating from first body, valve body is provided with the through-flow outlet of first gas, be provided with the through-flow inlet of first gas between the internal diameter of the external diameter of slide-valve and first body, its structure characteristic is that slide-valve is provided with second valve, second valve comprises the through-flow inlet of second gas of an end that is arranged on slide-valve, with the through-flow outlet of second gas that is arranged on its other end, be provided with second valve seat between through-flow inlet of second gas and the through-flow outlet of second gas, second valve head and second spring, one end of second spring is crimped on second valve head, and its other end is crimped on the interior spring block of slide-valve; First opening end, the through-flow inlet of first gas and the through-flow inlet of second gas communicate, and second opening end, the through-flow outlet of first gas and the through-flow outlet of second gas communicate successively; The coefficient of stiffiness of first spring is littler than the coefficient of stiffiness of second spring.
The external diameter of described slide-valve is provided with the guide block more than two, being provided with glade plane space between the internal diameter of the end of guide block and first body, is the through-flow inlet of first gas by the external diameter of slide-valve, the sidewall of guide block and the space that internal diameter surrounded jointly of first body; First valve seat of corresponding setting constitutes jointly on first valve head that first valve is provided with by the end of slide-valve and the valve body.
Another kind of restrictive one-way valve by this purpose design, comprise first body that has first opening end and second opening end, be provided with first valve that constitutes by first valve seat and first valve head in first body, be crimped with first spring between first valve seat and first valve head, be provided with the block that prevents that first valve head from deviating from first body, first valve seat is provided with the through-flow outlet of first gas, be provided with the through-flow inlet of first gas between the internal diameter of the external diameter of first valve head and first body, its structure characteristic is that the next door of first body is provided with second body, be provided with second valve that constitutes by second valve seat and second valve head in second body, one end of second spring is crimped on second valve head, its the other end is crimped on the interior spring block of second body, second body is provided with through-flow inlet of second gas and the through-flow outlet of second gas, the through-flow inlet of second gas is arranged on second valve seat, second body is provided with first by-pass hole and second by-pass hole, first opening end, first by-pass hole, through-flow inlet of first gas and the through-flow inlet of second gas communicate second opening end, second by-pass hole, through-flow outlet of first gas and the through-flow outlet of second gas communicate; The coefficient of stiffiness of first spring is littler than the coefficient of stiffiness of second spring.
A kind of controlling method of restrictive one-way valve, the pressure that it is characterized in that setting first opening end is Pa, the pressure of setting second opening end is Pb, the differential pressure of Pa and Pb is Δ p, be Δ p=Pa-Pb, differential pressure when setting first valve head and closing first valve seat is C1, set second valve head from second valve seat break away from, differential pressure when the through-flow inlet of second gas is opened is C2
When Δ p＜C1, first valve is opened, and second valve cuts out,
When C1≤Δ p＜C2, first valve cuts out, and second valve cuts out,
When C2≤Δ p, first valve cuts out, and second valve is opened.
A kind of application of restrictive one-way valve, it is characterized in that in the capacity control rotary compressor, control cylinder with cylinder compression chamber is arranged on the inside that pressure is positioned on high-tension side housing, the revolution piston that is positioned at the cylinder compression chamber is driven by bent axle, slide plate comes and goes in vane slot and drives, pressure in the sucking pipe inspiration cylinder compression chamber is that to become pressure after the low-pressure gas of Ps is compressed be that the pressurized gas of Pd are discharged to enclosure interior, be provided with the passage of penetration slipping sheet groove in the cylinder compression chamber, one end opening of this passage is in enclosure interior, the parts that its other end is opened on sucking pipe or communicates with sucking pipe, the pressure P b in the sealing slide plate chamber at the slide plate back in the vane slot, sealing slide plate chamber is switched pipe with pressure and is communicated, restrictive one-way valve is arranged on pressure and switches in the pipe, and second opening end of restrictive one-way valve communicates with sealing slide plate chamber.
Be provided with two cylinders in the described capacity control rotary compressor, first of four attachment tubes that the outlet pipe of capacity control rotary compressor and four-way valve are had is connected, second attachment tube of four-way valve links to each other with an end of outdoor heat exchanger, the other end of outdoor heat exchanger links to each other with expansion valve, expansion valve links to each other with an end of indoor heat exchanger, the other end of indoor heat exchanger is connected to second attachment tube of four-way valve, and the 4th attachment tube of four-way valve is connected to the attachment tube of liquid container, two sucking pipes that are arranged on the liquid container bottom are connected on two cylinders of enclosure interior separately, the pressure of device in the bottom, side of housing switches pipe and is connected with the sealing slide plate chamber of control cylinder, and the outlet side that pressure switches pipe is connected between four-way valve and the indoor heat exchanger via restrictive one-way valve.
The pressure difference that the present invention will act on restrictive one-way valve two opening ends is between predefined two values the time, stop the connection of these opening ends, when being positioned at the pressure difference beyond this scope, be communicated with these opening ends, prevent when the compression of capacity controlled compressor control cylinder bump sound or the slide plate breakage occurs of slide plate.
The present invention is combined into a restrictive one-way valve by two one-way valves that move separately because of different differential pressures, this restrictive one-way valve both can be accommodated in the same body, also can be arranged side by side, compared with former electric two-way valve, it can directly control flowing of fluid by the variation of pressure; It not only has the advantage that can change operating pressure arbitrarily, and also has superiority on price and reliability.
Description of drawings
Fig. 1 is one embodiment of the invention sectional structure schematic representation.
Fig. 2 is that X-X among Fig. 1 is to the sectional structure schematic representation.
Fig. 3 is first valve and second valve structural representation when all closing.
Fig. 4 is that first valve cuts out, the structural representation when second valve is opened.
Fig. 5 is applied in partial cutaway schematic in the capacity controlled compressor for restrictive one-way valve.
Fig. 6 is applied in structural representation in the refrigeration cycle for restrictive one-way valve.
Fig. 7-Fig. 8 is another embodiment of the present invention sectional structure schematic representation.
Among the figure: 1 is restrictive one-way valve, and 2a is first body, and 2b is second body, and 3 is valve body, 4 is slide-valve, and 5a is first valve seat, and 5b is second valve seat, and 6a is the through-flow outlet of first gas, 6b is the through-flow outlet of second gas, and 7a is the through-flow inlet of first gas, and 7b is the through-flow inlet of second gas, and 8 is guide block, 9a is first valve head, and 9b is second valve head, and 11a is first spring, 11b is second spring, and 12 is block, and 13 is spring block, 14 is fixed lobe, and 15a is first by-pass hole, and 15b is second by-pass hole, 21 is compressor, and 22 for pressure switches pipe, and 23 is four-way valve, 24 is indoor heat exchanger, and 25 is outdoor heat exchanger, and 26 is expansion valve, 27 is liquid container, and 28 is outlet pipe, and 29 is tie point, 31 is housing, and 32 is control cylinder, and 33 is slide plate, 34 is piston, and 35 is bent axle, and 36 is sucking pipe, 37 is the cylinder compression chamber, and 38 is the slide plate chamber, and 39 is the slide plate front end, 40 is vane slot, and 41 is pressure hole, and 42 is the low pressure hole, 43 is one-way valve, and A is first opening end, and B is second opening end.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described.
First embodiment
Referring to Fig. 1-Fig. 2, be the sectional view of restrictive one-way valve 1 of the present invention.Restrictive one-way valve 1 be by the slide-valve 4 among the interior plant first body 2a, therewith be arranged in pairs in the valve body 3 of the seamless configuration of internal diameter of the first body 2a, support the first spring 11a of slide-valve 4 and its block that stops 12 being constituted jointly to slide-valve 4 location neatly.Slide-valve 4 is provided with the cone shape first valve head 9a towards an end of valve body 3, the first valve head 9a and be arranged on the on-off action that the first valve seat 5a on the valve body 3 finishes first valve jointly.
Slide-valve 4 is provided with second valve.The front end of the cylindrical hole of the central part of slide-valve 4 is provided with the through-flow inlet of second gas 7b, and slide-valve 4 is provided with the second valve head 9b of the sphere that can open and close this inlet.When the second valve head 9b opened, second gas on the slide-valve 4 is through-flow, and inlet 7b was communicated with the through-flow outlet of second gas 6b of the other end that is positioned at slide-valve 4.At the through-flow inlet of second gas 7b, see Fig. 4, constitute the second valve seat 5b.Because the second spring 11b that the second valve head 9b is set in the slide-valve 4 supports that as aftermentioned, according to the differential pressure of two opening ends, second valve head 9b direction to the left and right moves.The other end of second spring 11 is resisted against on the spring block 13 in the slide-valve 4.
Since be arranged on the external diameter of slide-valve 4 three radially guide block 8 and the internal diameter of the first body 2a between be provided with very little gap, so slide-valve 4 to the left and right direction move.Space between the internal diameter of the external diameter of slide-valve 4 and the first body 2a becomes the through-flow inlet of first gas 7a.The first spring 11a as pressure spring is crimped between guide block 8 and the valve body 3, and the slide-valve 4 under is crimped on the block 12 in the raw.Next, effect and the effect to restrictive one-way valve 1 describes.
Among Fig. 1, two opening ends of restrictive one-way valve 1 are respectively the first opening end A and the second opening end B, and its pressure separately is Pa and Pb, and the differential pressure of Pa and Pb is Δ p, i.e. Δ p=Pa-Pb.After differential pressure Δ p became greatly, slide-valve 4 will begin from the state of Fig. 1 to move to the left.
In first embodiment, the coefficient of stiffiness of the first spring 11a is very little, and the coefficient of stiffiness of the second spring 11b is set very greatly.When slide-valve 4 begins when mobile to the left from the state of Fig. 1, the differential pressure when the first valve head 9a is closed the first valve seat 5a is used as C1, and the second valve head 9b is used as C2 from the differential pressure that the second valve seat 5b breaks away from, second gas is through-flow when inlet 7b opens.
When Δ p＜C1, slide-valve 4 is opened the first valve seat 5a, and remains static, and the gas that is positioned at the first opening end A via the through-flow outlet of first gas 6a, flows to the second opening end B since the through-flow inlet of first gas 7a.Consequently: the pressure of the second opening end B equates with the pressure of the first opening end A, i.e. Pb=Pa.
When the pressure of the pressure ratio first opening end A of the second opening end B is high, the gas flow first opening end A of C1＜0, the second opening end B.Subsequently, Pa rises, and the pressure P b of the second opening end B rises to Pa+C1 always, and Δ p rises, and when becoming C1≤Δ p＜C2, slide-valve 4 moves, the first valve head 9a closes the first valve seat 5a, becomes state as shown in Figure 3.Consequently: the gas that is positioned at the first opening end A can not flow to the first opening end B.
When Pa rises, during and C2≤Δ p, as shown in Figure 4, the second valve head 9b opens, and the gas that is positioned at the first opening end A can flow to the through-flow outlet of second gas 6b from the through-flow inlet of second gas 7b.Consequently: flow into the second opening end B from the first opening end A.The pressure P b of the second opening end B can rise to Pa-C2 always.
When Pa descends, becomes Δ p＜C1, turn back to state shown in Figure 1: Pb=Pa once more.In sum, restrictive one-way valve of the present invention, the differential pressure Δ p of the first opening end A and the second opening end B is in the scope of predefined two constants, that is to say, under the condition of C1≤Δ p＜C2, the gas flow of prevention from the first opening end A to the second opening end B, and can prevent that the pressure of the second opening end B from increasing.
Second embodiment
Next, the embodiment who restrictive one-way valve 1 is applied to capacity control rotary compressor is described.In Fig. 5, the control cylinder 32 with cylinder compression chamber 37 is configured in pressure and is positioned on high-tension side housing 31 inside.In cylinder compression chamber 37 inside, revolution piston 34 is driven by bent axle 35, and slide plate 33 comes and goes in vane slot 40 and drives.Piston 34 revolution after the slide plate 33 that contact with piston comes and goes and moves, is to become pressurized gas after the low-pressure gas of Ps is compressed from the pressure of sucking pipe 36 inspiration cylinder compression chambers 37, is discharged to housing 31 inside.Therefore, the slide plate 33 that touches piston 34 comes and goes action, and control cylinder 32 carries out compression, and this state is called the H pattern.
But among Fig. 5, slide plate front end 39 breaks away from from piston 34 outsides, be accommodated in the vane slot 40 and be fixed, so, even piston 34 can not carry out compression in rotation.This state is called the L pattern.
The method that slide plate 33 is fixed to vane slot 40 is, by means of the differential pressure F of 42 generations of pressure hole 41 and low pressure hole.It is embodied in: the pressure P b that is positioned at the sealing slide plate chamber 38 at slide plate 33 backs, after the switching of pressure switching pipe, when being positioned at low voltage side Ps, the back pressure that acts on slide plate 33 backs is identical with the pressure of cylinder compression chamber 37 or diminish, when slide plate 33 was accommodated in the vane slot 40, F fixed by differential pressure.Switch pipe 22, the pressure P b in slide plate chamber 38 is switched to high pressure by pressure, during promptly above-mentioned Pa-C2, the cylinder compression chamber 37 that slide plate 33 flies out and becomes low voltage side in a flash, slide plate front end 39 touches the outer ring of piston 34, can carry out compression once more.Therefore, can between high pressure and low pressure, switch the pressure P b in slide plate chamber 38 by switching pipe 22, discontinuous (the H pattern) that can carry out compression with interrupt (L pattern), the feature of Here it is capacity control rotary compressor.
Pressure difference Δ p between exhaust pressure Pd and pressure of inspiration(Pi) Ps is from compressor start, and the time that is accompanied by becomes big gradually.For example, Δ p=0 before the compressor start, in 10～15 seconds after the starting, Δ p rises to 0.5Mpa, and subsequently, in 5～10 minutes, Δ p reaches peak 1.5～2.0Mpa.
During from the L mode switching to the H pattern, Δ p is in the minimum time period, for example, below the 0.5Mpa described later, after switching pipe 22 pressure in slide plate chamber 38 is switched to high pressure by pressure, the slide plate 33 cylinder compression chamber 37 that can fly out, because of the back pressure of slide plate 33 a little less than, slide plate front end 39 does not contact with the outside of piston 34 at short notice.Consequently, collision appears in 39 of the piston 34 of high speed revolution motion and slide plate front ends, and fierce discontinuous bruit de froissement takes place, and slide plate 33 occurs damaged easily.
Restrictive one-way valve 1 of the present invention is the effective means that solves above-mentioned problem.As shown in Figure 5, restrictive one-way valve 1 is provided in the way of pressure switching pipe 22.
In order to illustrate, below the value of fixed number C1 and C2 is used as 0.01Mpa and 0.5Mpa respectively.
When the differential pressure Δ p of the exhaust pressure Pd of compressor 21 and pressure of inspiration(Pi) Ps at C1, when just 0.01Mpa is following, the two ends of restrictive one-way valve 1 are same pressure, and the pressure difference that slide plate chamber 38 and cylinder compression chamber are 37, be equivalent to Δ p, fully little, slide plate 33 can not fly out in the cylinder compression chamber 37.Subsequently, through after a while, Pd also rises thereupon, Ps descends, Δ p increases, and Δ p reaches during the 0.5Mpa always, and restrictive one-way valve 1 all is in closed condition, so the pressure in slide plate chamber 38 does not rise.So can stop flying out of slide plate 33.
Through after a while, for example, after begin from compressor start 15 seconds, Δ p rises to more than the 0.5Mpa, and restrictive one-way valve 1 is opened once more, and pressure moment in slide plate chamber 38 rises, and slide plate 33 can fly out in the cylinder compression chamber 37.At this moment, Δ p is fully high, and slide plate front end 39 can not collide with piston 34 outsides substantially repeatedly, can join with piston 34 in a flash.Control cylinder 32 can switch to the H pattern safely.Subsequently, because of Δ p increases, so can carry out the H pattern discontinuously.
Predefined fixed number C1 and C2 are necessity fixed numbers that prevents that slide plate 33 therebetween from flying out, its design by compressor, the kind of using refrigerant or the decisions such as condition of application system.
Above-mentioned restrictive one-way valve of the present invention 1 reacts automatically by the height pressure difference of compressor or system, has, applied range cheap by property height, price and maneuverable characteristics.Because these reasons, unquestionable, the present invention can be widely used as the control lag device.
The 3rd embodiment
The third embodiment of the present invention is that duplex-cylinder rotary compressor is carried application examples on the heat pump type air conditioner that heats with the dual-purpose that freezes, as shown in Figure 6.In this duplex-cylinder rotary compressor 21, one of them of two cylinders often carried out compression operation, and another cylinder, control cylinder 32, as second embodiment's explanation, the device that possesses discontinuous compression and interrupt compression.So compressor 21 has the control cylinder delivery space, adjusts the feature of refrigerating capacity.That is to say that the 3rd embodiment's heat pump type air conditioner is to change passing capacity under refrigeration condition and the ratio that heats the air-conditioning ability under the condition, the refrigeration condition to reduce and pay attention to efficient, heat the design of the ability of paying attention under the condition.
Among Fig. 6, be welded to the outlet pipe 28 of upper end of the housing 31 of compressor 21, first of four attachment tubes that had with four-way valve 23 is connected.Second attachment tube of four-way valve 23 links to each other with outdoor heat exchanger, and the other end of this outdoor heat exchanger 25 links to each other with expansion valve 26, and expansion valve links to each other with indoor heat exchanger 24.Indoor heat exchanger 24 is connected to the 3rd attachment tube of four-way valve 23, and the 4th attachment tube of four-way valve 23 is connected to the attachment tube of liquid container 27.Two sucking pipes 36 that are configured in liquid container 27 bottoms are connected on two cylinders of enclosure interior separately.Device switches pipe 22 at the pressure of the bottom, side of housing 31 and is connected with the sealing slide plate chamber 38 of control cylinder 32, sees Fig. 4.The outlet side that pressure switches pipe 22 via restrictive one-way valve 1, be connected between four-way valve 23 and the indoor heat exchanger 24.This is presented on the tie point 29.
Arrow among Fig. 6 is that the cold media air of indication refrigeration cycle flows to.Solid arrow is the flow direction of gas under the indication refrigeration mode, and dotted arrow is the flow direction of gas under the indication heating mode.Four-way valve 23 is being played the part of the role of switching gas flow, can switch freely circulating between refrigeration mode and heating mode by electric signal.
(1) situation of selecting refrigeration mode to turn round, ability subtracts running.
Among Fig. 6, gas coolant flows shown in solid line, and outdoor heat exchanger 25 becomes condenser, and indoor heat exchanger 24 becomes vaporizer.The pressure of tie point 29 becomes low voltage side, and the pressure that switches the pipe 22 slide plate chambeies 38 that are connected with pressure also becomes low voltage side, i.e. Δ p＜C1.Consequently, compressor 21 becomes the L mode operation, and the refrigerating capacity of compressor and air conditioner reduces.Under refrigeration mode, begin to running stablely from compressor 21 starting, the pressure of tie point 29 often is positioned at low voltage side, so the slide plate 33 of control cylinder 32 is often static and be accommodated in the vane slot 40.
(2) situation of selecting heating mode to turn round, all-round power running.
Under the heating mode, the pressure of tie point 29 is positioned at high pressure side Pd, after compressor 21 startings, the pressure of tie point 29 rises, the pressure of tie point 29 increases, and low voltage side Ps between differential pressure Δ p become till the C2 value, by the effect of restrictive one-way valve 1, the pressure in slide plate chamber 38 is positioned at low voltage side Ps.Subsequently, Δ p than C2 big after, simultaneously, control cylinder 32 switches to the H pattern, Δ p 〉=C2.
(3) in the heating mode running, switch to the situation of defrosting running.
Usually, in the heating mode running, the four-way valve 23 auto-reverse runnings that defrost just switch to refrigeration mode.Subsequently, defrosting finishes, switches to the heating mode running, because above-mentioned (1) and (2) are same running strokes, so pass through the effect of restrictive one-way valve 1, problem can not take place.
The 3rd embodiment is carried capacity control rotary compressor in the application examples that heats with the heat pump type air conditioner of the dual-purpose that freezes.By the effect of restrictive one-way valve 1, under whole operation modes, the provable bruit de froissement that can avoid piston and slide plate.
The 4th embodiment
Referring to Fig. 7, for two valves in the restrictive one-way valve organically being divided into the design of first body 2a that is positioned at the below and the second body 2b that is positioned at the top.First opening end A of restrictive one-way valve and the differential pressure of the second opening end B are Δ p, same with first embodiment, when C1≤Δ p＜C2, the first valve head 9a of downside closes the first valve seat 5a, when C2≤Δ p, the second valve head 9b of upside opens the second valve seat 5b.Consequently the gas of the first opening end A from the first by-pass hole 15a of the end that is positioned at the first body 2a via the through-flow inlet of second gas on second body 2b 7b, can flow into the second opening end B from the second by-pass hole 15b of the other end that is positioned at the first body 2a.Promptly bring into play effect with first embodiment's equivalent effect.
And the first body 2a can simply exchange with general one-way valve 43 as shown in Figure 8.
Claims (6)
1. restrictive one-way valve, comprise first body (2a) that has first opening end (A) and second opening end (B), be provided with first valve that constitutes by valve body (3) and slide-valve (4) in first body, be crimped with first spring (11a) between slide-valve and the valve body, be provided with the block (12) that prevents slide-valve and deviate from first body, valve body is provided with the through-flow outlet of first gas (6a), be provided with the through-flow inlet of first gas (7a) between the internal diameter of the external diameter of slide-valve and first body, it is characterized in that slide-valve is provided with second valve, second valve comprises the through-flow inlet of second gas (7b) of an end that is arranged on slide-valve, with the through-flow outlet of second gas (6b) that is arranged on its other end, be provided with second valve seat (5b) between through-flow inlet of second gas and the through-flow outlet of second gas, second valve head (9b) and second spring (11b), one end of second spring is crimped on second valve head, and its other end is crimped on the interior spring block (13) of slide-valve; First opening end, the through-flow inlet of first gas and the through-flow inlet of second gas communicate, and second opening end, the through-flow outlet of first gas and the through-flow outlet of second gas communicate successively; The coefficient of stiffiness of first spring is littler than the coefficient of stiffiness of second spring.
2. restrictive one-way valve according to claim 1, the external diameter that it is characterized in that described slide-valve is provided with the guide block (8) more than two, being provided with glade plane space between the internal diameter of the end of guide block and first body, is the through-flow inlet of first gas by the external diameter of slide-valve, the sidewall of guide block and the space that internal diameter surrounded jointly of first body; First valve seat (5a) of corresponding setting is common on first valve head (9a) that first valve is provided with by the end of slide-valve and the valve body constitutes.
3. restrictive one-way valve, comprise first body (2a) that has first opening end (A) and second opening end (B), be provided with first valve that constitutes by first valve seat (5a) and first valve head (9a) in first body, be crimped with first spring (11a) between first valve seat and first valve head, be provided with the block (12) that prevents first valve head and deviate from first body, first valve seat is provided with the through-flow outlet of first gas, be provided with the through-flow inlet of first gas between the internal diameter of the external diameter of first valve head and first body, the next door that it is characterized in that first body is provided with second body (2b), be provided with second valve that constitutes by second valve seat (5b) and second valve head (9b) in second body, one end of second spring (11b) is crimped on second valve head, its the other end is crimped on the interior spring block (13) of second body, second body is provided with through-flow inlet of second gas (7b) and the through-flow outlet of second gas, the through-flow inlet of second gas is arranged on second valve seat, second body is provided with first by-pass hole (15a) and second by-pass hole (15b), first opening end, first by-pass hole, through-flow inlet of first gas and the through-flow inlet of second gas communicate second opening end, second by-pass hole, through-flow outlet of first gas and the through-flow outlet of second gas communicate; The coefficient of stiffiness of first spring is littler than the coefficient of stiffiness of second spring.
4. controlling method according to claim 1 or 3 described restrictive one-way valves, the pressure that it is characterized in that setting first opening end (1) is Pa, the pressure of setting second opening end (B) is Pb, the differential pressure of Pa and Pb is Δ p, be Δ p=Pa-Pb, differential pressure when setting first valve head (9a) and closing first valve seat (5a) is C1, set second valve head (9b) from second valve seat (5b) break away from, the differential pressure of the through-flow inlet of second gas (7b) when opening be C2
When Δ p＜C1, first valve is opened, and second valve cuts out,
When C1≤Δ p＜C2, first valve cuts out, and second valve cuts out,
When C2≤Δ p, first valve cuts out, and second valve is opened.
5. application according to claim 1 or 3 described restrictive one-way valves, it is characterized in that in the capacity control rotary compressor, control cylinder (32) with cylinder compression chamber (37) is arranged on the inside that pressure is positioned on high-tension side housing (31), the revolution piston (34) that is positioned at the cylinder compression chamber is driven by bent axle (35), slide plate (33) comes and goes in vane slot (40) and drives, pressure in sucking pipe (36) the inspiration cylinder compression chamber is that to become pressure after the low-pressure gas of Ps is compressed be that the pressurized gas of Pd are discharged to enclosure interior, be provided with the passage of penetration slipping sheet groove in the cylinder compression chamber, one end opening of this passage is in enclosure interior, the parts that its other end is opened on sucking pipe or communicates with sucking pipe, the pressure P b in the sealing slide plate chamber (38) at the slide plate back in the vane slot, sealing slide plate chamber is switched pipe (22) with pressure and is communicated, restrictive one-way valve (1) is arranged on pressure and switches in the pipe, and second opening end of restrictive one-way valve communicates with sealing slide plate chamber.
6. according to the application of the described restrictive one-way valve of claim 5, it is characterized in that being provided with in the described capacity control rotary compressor two cylinders, first of four attachment tubes that the outlet pipe of capacity control rotary compressor (28) and four-way valve (23) are had is connected, second attachment tube of four-way valve links to each other with an end of outdoor heat exchanger (25), the other end of outdoor heat exchanger links to each other with expansion valve (26), expansion valve links to each other with an end of indoor heat exchanger (24), the other end of indoor heat exchanger is connected to second attachment tube of four-way valve, and the 4th attachment tube of four-way valve is connected to the attachment tube of liquid container (27), two sucking pipes (36) that are arranged on the liquid container bottom are connected on two cylinders of enclosure interior separately, the pressure of device in the bottom, side of housing (31) switches pipe (22) and is connected with the sealing slide plate chamber (38) of control cylinder (32), and the outlet side that pressure switches pipe is connected between four-way valve and the indoor heat exchanger via restrictive one-way valve (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100374437A CN101504086B (en) | 2009-02-27 | 2009-02-27 | Restrictive one-way valve, its control method and use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100374437A CN101504086B (en) | 2009-02-27 | 2009-02-27 | Restrictive one-way valve, its control method and use |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101504086A true CN101504086A (en) | 2009-08-12 |
| CN101504086B CN101504086B (en) | 2011-01-19 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104975823A (en) * | 2015-07-22 | 2015-10-14 | 陈建平 | Check valve for water injection well of oil field |
| CN105987206A (en) * | 2015-01-30 | 2016-10-05 | 浙江三花股份有限公司 | Stop valve |
| CN109404573A (en) * | 2018-11-08 | 2019-03-01 | 江西新电汽车空调系统有限公司 | A kind of used in new energy vehicles plastics water check valve |
| CN111102262A (en) * | 2020-01-17 | 2020-05-05 | 哈尔滨鼓润生物技术有限公司 | Gas circuit integrated block and valve block assembly |
| CN112413938A (en) * | 2020-12-07 | 2021-02-26 | 浙江农林大学暨阳学院 | Automobile air conditioner thermal expansion valve |
| WO2022052478A1 (en) * | 2020-09-08 | 2022-03-17 | 浙江盾安人工环境股份有限公司 | One-way valve and air conditioning device |
-
2009
- 2009-02-27 CN CN2009100374437A patent/CN101504086B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987206A (en) * | 2015-01-30 | 2016-10-05 | 浙江三花股份有限公司 | Stop valve |
| CN104975823A (en) * | 2015-07-22 | 2015-10-14 | 陈建平 | Check valve for water injection well of oil field |
| CN104975823B (en) * | 2015-07-22 | 2017-05-24 | 陈建平 | Check valve for water injection well of oil field |
| CN109404573A (en) * | 2018-11-08 | 2019-03-01 | 江西新电汽车空调系统有限公司 | A kind of used in new energy vehicles plastics water check valve |
| CN111102262A (en) * | 2020-01-17 | 2020-05-05 | 哈尔滨鼓润生物技术有限公司 | Gas circuit integrated block and valve block assembly |
| WO2022052478A1 (en) * | 2020-09-08 | 2022-03-17 | 浙江盾安人工环境股份有限公司 | One-way valve and air conditioning device |
| CN112413938A (en) * | 2020-12-07 | 2021-02-26 | 浙江农林大学暨阳学院 | Automobile air conditioner thermal expansion valve |
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| Publication number | Publication date |
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| CN101504086B (en) | 2011-01-19 |
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