CN102797875A - Bidirectional one-way valve and control method thereof - Google Patents
Bidirectional one-way valve and control method thereof Download PDFInfo
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- CN102797875A CN102797875A CN2011101347932A CN201110134793A CN102797875A CN 102797875 A CN102797875 A CN 102797875A CN 2011101347932 A CN2011101347932 A CN 2011101347932A CN 201110134793 A CN201110134793 A CN 201110134793A CN 102797875 A CN102797875 A CN 102797875A
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Abstract
The invention provides a bidirectional one-way valve and a control method thereof. The bidirectional one-way valve is characterized in that a first slide valve, a first valve seat body, a second slide valve, a second valve seat body and a first coil spring are arranged in a straight pipe; a vertical pipe which is communicated with the straight pipe and is provided with an outlet hole is arranged at the center of the straight pipe; the first slide valve and the first valve seat body are arranged on one side of the vertical pipe, and the second slide valve and the second valve seat body are arranged on the other side of the vertical pipe; the first coil spring is connected between the first slide valve and the second slide valve in a pressing manner; the first valve seat body is internally provided with a valve seat channel which is communicated with a first inlet hole at one end of the straight pipe; a conical valve on the first slide valve is plugged in the valve seat channel of the first valve seat body; the second valve seat body is internally provided with a valve seat channel which is communicated with a second inlet hole at the other end of the straight pipe; and a conical valve of the second slide valve is plugged in the valve seat channel of the second valve seat body. The bidirectional one-way valve and the control method thereof disclosed by the invention have the characteristics of simple and reasonable structure, flexibility in operation, low manufacturing cost, easiness in installation and wide applicable range.
Description
Technical field
The present invention relates to a kind of one-way valve, particularly a kind of twocouese one-way valve and controlling method thereof.
Background technique
Two rotary compressors move repeatedly and the air conditioner that stops in; In order to prevent from the adverse current of the rotary compressor generation pressurized gas of operating rotary compressor to stopping; And in order to prevent that in advance efficient from reducing, starting mistake etc., need be provided with independently one-way valve in each exhaust loop.
Summary of the invention
The object of the invention aim to provide a kind of simple and reasonable, flexible operation, fabricating cost low, be prone to install, twocouese one-way valve and controlling method thereof applied widely, to overcome deficiency of the prior art.
A kind of twocouese one-way valve by this purpose design; Its structure characteristic is in straight tube, to be provided with first guiding valve, first valve body, second guiding valve, second valve body and first coil spring; The central authorities of straight tube are provided with the vertical tube that communicates with straight tube and have exit orifice; First guiding valve and first valve body are arranged on a side of vertical tube, and second guiding valve and second valve body are arranged on the opposite side of vertical tube, and first coil spring is crimped between first guiding valve and second guiding valve; Be provided with valve base channel in first valve body; This valve base channel communicates with first inlet opening of straight tube one end, and the Conical Valve shutoff on first guiding valve is provided with valve base channel in second valve body in the valve base channel of first valve body; This valve base channel communicates with second inlet opening of the straight tube the other end, and the Conical Valve shutoff on second guiding valve is in the valve base channel of second valve body.
The periphery of said first guiding valve and second guiding valve is provided with more than one sliver, can form the circumferential groove of fluid passage between the inwall of this sliver and straight tube.
Said twocouese one-way valve is arranged in the freeze cycle; This freeze cycle comprises first rotary compressor and second rotary compressor, condenser, expansion gear and vaporizer at least; First inlet opening of twocouese one-way valve communicates with the downtake pipe of first rotary compressor; Second inlet opening of twocouese one-way valve communicates with the second exhaust pipe of second rotary compressor, and the exit orifice of twocouese one-way valve communicates with an end of condenser.
Said twocouese one-way valve is arranged in the freeze cycle; This freeze cycle comprises first rotary compressor, condenser, four-way valve, expansion gear and vaporizer at least; The two ends that the twocouese one-way valve is connected in parallel on expansion gear through first inlet opening that is provided with on it and second inlet opening; The exit orifice of twocouese one-way valve communicates with the refrigerant supplying pipe of first rotary compressor, and this refrigerant supplying pipe is communicated with the cylinder compression chamber of first rotary compressor.
A kind of controlling method of twocouese one-way valve, when it is characterized in that the pressure of pressure＞exit orifice of first inlet opening or second inlet opening, open first inlet opening or second inlet opening; During the pressure of the pressure≤exit orifice of first inlet opening or second inlet opening, first inlet opening or second inlet opening are closed.
A kind of twocouese one-way valve; It is characterized in that in straight tube, being provided with twocouese guiding valve, first valve body, second valve body and second coil spring; The two ends of twocouese guiding valve are respectively arranged with Conical Valve, are provided with valve base channel in first valve body, and this valve base channel communicates with first inlet opening of straight tube one end; The Conical Valve shutoff of twocouese guiding valve one end is in the valve base channel of first valve body; One second coil spring is crimped between first valve body and twocouese guiding valve one end, is provided with valve base channel in second valve body, and this valve base channel communicates with second inlet opening of the straight tube the other end; The Conical Valve shutoff of the twocouese guiding valve the other end is in the valve base channel of second valve body, and another second coil spring is crimped between second valve body and the twocouese guiding valve the other end.
The periphery of said twocouese guiding valve is provided with more than one sliver, can form the circumferential groove of fluid passage between the inwall of this sliver and straight tube.
Said twocouese one-way valve is arranged in the freeze cycle; This freeze cycle comprises first rotary compressor and second rotary compressor, condenser, expansion gear and vaporizer at least; Communicate in the housing of first inlet opening of twocouese one-way valve through connecting tube and first rotary compressor, communicate in the housing of second inlet opening of twocouese one-way valve through connecting tube and second rotary compressor.
A kind of controlling method of twocouese one-way valve, when it is characterized in that the summation of setting value of pressure difference＜two second coil spring of first inlet opening and second inlet opening, open simultaneously first inlet opening and second inlet opening; During the summation of the setting value of the pressure difference of first inlet opening and second inlet opening＞two second coil spring, first inlet opening or second inlet opening are closed.
The present invention forms a complete control valve for fluids with in the past two one-way valves and a T junction: the twocouese one-way valve; First inlet opening of this twocouese one-way valve and second inlet opening have been connected the outlet pipe of two rotary compressors separately; When two rotary compressor operations; First valve body and second valve body of twocouese one-way valve are all opened; The discharge gas of two rotary compressors all flows out from the exit orifice of twocouese one-way valve, and after wherein any rotary compressor stopped, first valve body or second valve body corresponding with it can be closed; Can prevent to flow into pressurized gas from operating rotary compressor; On the basis that the rotary compressor of the pressurized gas of guaranteeing to prevent operating rotary compressor in shutting down flows into, be not only and reduced fabricating cost, and will reduce installation strength.
Twocouese one-way valve among the present invention is the control valve for fluids with two inlet openings and a delivery outlet; Except can using in air-conditioning with plural rotary compressor or freeze cycle; Can also be as control valve for fluids extensive use with identical purpose; As be applied in the control of gas or wet goods fluid, its have simple and reasonable, flexible operation, fabricating cost low, be prone to install, characteristics applied widely.
Description of drawings
Fig. 1 is the broken section structural representation of embodiments of the invention 1.
Fig. 2 is that X-X among Fig. 1 is to the broken section structural representation.
Fig. 3 is the broken section structural representation of first valve body.
Fig. 4 is the main TV structure schematic representation of first guiding valve.
Fig. 5 is the left TV structure schematic representation of Fig. 4.
Fig. 6 is first application examples of embodiments of the invention 1.
Fig. 7 for the compressor start among the embodiment 1, move and pressure oscillation figure when stopping.
Fig. 8-Figure 11 is the schematic representation of the twocouese one-way valve (S) among the embodiment 1 after stressed.
Figure 12 is the broken section structural representation of an existing one-way valve.
Figure 13 is for having the broken section structural representation after two one-way valves and a T shape pipe are assembled now.
Figure 14 is the freeze cycle structural representation of existing band double compressors.
Figure 15 is second application examples of embodiments of the invention 1.
Figure 16 is the broken section structural representation of embodiments of the invention 2.
Figure 17-Figure 20 is the schematic representation of the twocouese one-way valve (T) among the embodiment 2 after stressed.
Among the figure: R1 is first rotary compressor, and R2 is second rotary compressor, and 1 is condenser, and 2 is expansion valve, and 3 is vaporizer, and 4a is a downtake pipe; 4b is a second exhaust pipe, and 5a is first liquid-storage container, and 5b is second liquid-storage container, and 6 is oil separator, and 7 is four-way valve, and 10 is twocouese one-way valve (S); 11 is exit orifice, and 20 is straight tube, and 21a is first inlet opening, and 21b is second inlet opening, and 22 is vertical tube, and 30a is first guiding valve; 30b is second guiding valve, and 31 is sliver, and 32 is circumferential groove, and 33 is Conical Valve, and 34 is snubber; 35 is first coil spring, and 40a is first valve body, and 40b is second valve body, and 41 is the circular cone valve seat, and 42 is valve base channel; 43 is the refrigerant supplying pipe, and 45 is outdoor heat converter, and 46 is indoor heat converter, and 50 is twocouese one-way valve (T), and 51 is the twocouese guiding valve; 52 is second coil spring, 100 be folk prescription to one-way valve, 110 is T shape connecting tube, 200 is electromagnetic switch valve, B is soldering.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Referring to Fig. 1-Fig. 5, be the assembling sectional view of twocouese one-way valve (S) 10 and each component used as switch that constitute fluid circuit.
Twocouese one-way valve (S) 10 comprise straight tube 20 with the first inlet opening 21a and second inlet opening 21b, the central authorities of straight tube 20 are provided with the vertical tube 22 that communicates with straight tube 20 and have exit orifice 11.
Generally, straight tube 20 is a copper pipe, vertical tube 22 and straight tube 20 one machine shapings.Straight tube 20 is a precise forming, guarantee that it has enough circularity and cylindricity.
The first guiding valve 30a and the first valve body 40a are arranged on a side of vertical tube 22, and the second guiding valve 30b and the second valve body 40b are arranged on the opposite side of vertical tube 22.First coil spring 35 is crimped between the first guiding valve 30a and the second guiding valve 30b; Be provided with valve base channel 42 among the first valve body 40a; This valve base channel 42 communicates with the first inlet opening 21a of straight tube 20 1 ends; Conical Valve 33 shutoff on the first guiding valve 30a are in the valve base channel 42 of the first valve body 40a; Be provided with valve base channel 42 among the second valve body 40b, this valve base channel 42 communicates with the second inlet opening 21b of straight tube 20 the other ends, and Conical Valve 33 shutoff on the second guiding valve 30b are in the valve base channel 42 of the second valve body 40b.
During assembling, in advance with two guiding valves: the first guiding valve 30a and the second guiding valve 30b pack on the periphery of the snubber 34 of its back side design in first coil spring, the 35 back insertion straight tubes 20.
The first valve body 40a and the second valve body 40b are from the both-side opening end of straight tube 20; Just from the first inlet opening 21a and the second inlet opening 21b of straight tube 20; Be pressed into the position of regulation; The Conical Valve 33 of the first guiding valve 30a tip is installed in the circular cone valve seat 41 of the first valve body 40a, and the Conical Valve 33 of the second guiding valve 30b tip is installed in the circular cone valve seat 41 of the second valve body 40b.So can close valve base channel 42, in order to avoid gas leakage.
Two guiding valves comprise the first guiding valve 30a and the second guiding valve 30b, are provided with more than one sliver 31 in the periphery of its body, can form the circumferential groove 32 of fluid passage between the inwall of sliver 31 and straight tube 20.Among Fig. 4-Fig. 5, sliver 31 is eight, circumferential groove 32 is eight.
Have only very little slit between the inwall of the periphery of sliver 31 and straight tube 20, therefore, two guiding valves, just the first guiding valve 30a and the second guiding valve 30b can smooth and easyly slide.
The first valve body 40a of the first guiding valve 30a and the second valve body 40b of the second guiding valve 30b are identical shaped.Generally, the first guiding valve 30a and the second guiding valve 30b adopt plastic materials to process, and the first valve body 40a and the second valve body 40b adopt brass or plastic materials to process.
Under pressure, the snubber 34 at the back of two guiding valves can contact with each other, and has the long-pending too small function of the opening section that can prevent vertical tube 22.
Referring to Fig. 6, for having carried two rotary compressors: the first rotary compressor R1 and the second rotary compressor R2 and disposed the air conditioner of twocouese one-way valve (S) 10 or the example of freeze cycle.
The first inlet opening 21a and the second inlet opening 21b that have been connected twocouese one-way valve (S) 10 in the second exhaust pipe 4b loop of the downtake pipe 4a of the first rotary compressor R1 and the second rotary compressor R2 respectively.The exit orifice 11 of twocouese one-way valve (S) 10 has connected the inlet of oil separator 6.
When omitting oil separator 6, the exit orifice 11 of twocouese one-way valve (S) 10 can directly connect the inlet of condenser 1.Promptly; The first inlet opening 21a of twocouese one-way valve communicates with the downtake pipe 4a of the first rotary compressor R1; The second inlet opening 21b of twocouese one-way valve communicates with the second exhaust pipe 4b of the second rotary compressor R2, and the exit orifice 11 of twocouese one-way valve communicates with an end of condenser 1.The other end of condenser 1 then shown in Fig. 6, connects expansion gear 2, vaporizer 3 and the first liquid-storage container 5a and the first rotary compressor R1, the second liquid-storage container 5b and the second rotary compressor R2 successively.
When at least one when operation in two rotary compressors, press in the housing of this rotary compressor and the loop from the outlet pipe of this rotary compressor to expansion valve 2 is high pressure P d.Is low pressure Ps from expansion valve 2 to the loop the liquid-storage container.At two rotary compressor stopping periods, comprise that all pressure in the whole freezing circulation of rotary compressor are suitable, be balance pressure Pm.
Referring to Fig. 7, transverse axis is time t, and the longitudinal axis is pressure P (t), representes that at least one rotary compressor starts the variation in pressure of back to the refrigerating circulation system between stopping.
Pressure when two rotary compressors stop is Pm, and when at least 1 rotary compressor started, high pressure P d can boost, and low pressure Ps begins step-down, after 3～5 minutes, representes with t1, and these pressure are progressively stable.Thereafter, rotary compressor is shut down back high pressure P d and is begun step-down, and low pressure Ps begins to boost, and after a few minutes, representes with t2, becomes balance pressure Pm.
But; At this moment; A rotary compressor continues operation, and is of the back, and the exhaust loop of the rotary compressor that stops to be cut off by twocouese one-way valve (S) 10; Therefore, the pressure of the internal pressure of the exhaust casing of this rotary compressor and liquid-storage container is suitable with operating rotary compressor pressure of inspiration(Pi) Ps.
Air conditioner shown in Fig. 6 has carried two rotary compressors, the Mode S that therefore has two rotary compressors all to stop, the pattern M when the single rotary compressor of an arbitrary side moves, the model F when two rotary compressors all move, these three kinds of combinations.Its result can automatically carry out optimum operation according to air conditioning load, takes into account the travelling comfort of air-conditioning and energy-conservation.
When the pressure of pressure＞exit orifice 11 of the first inlet opening 21a or the second inlet opening 21b, the first inlet opening 21a or the second inlet opening 21b open; During the pressure of pressure≤exit orifice 11 of the first inlet opening 21a or the second inlet opening 21b, the first inlet opening 21a or the second inlet opening 21b close.
Next the action of the twocouese one-way valve (S) in each pattern is described.
Fig. 8 is two Mode S that rotary compressor all stops; Act on the pressure of the first inlet opening 21a, the second inlet opening 21b and exit orifice 11; Because be balance pressure Pm, therefore two guiding valves rely on the power of first coil spring 35 static on valve body separately.
Begin from this halted state, only start the first rotary compressor R1, i.e. execution pattern M, by shown in Figure 9, the pressure of the first inlet opening 21a can be higher than the pressure of exit orifice 11, because the existence of pressure reduction, the first valve body 40a can open.Therefore, the exhaust of the first rotary compressor R1 can flow out to the condenser 1 through oil separator 6 from exit orifice 11.But the pressure of the pressure ratio exit orifice 11 of the second inlet opening 21b is much lower, and therefore, the second valve body 40b can perforate, and just the second valve body 40b can not open.
The pressure reduction of the first inlet opening 21a and exit orifice 11 is gas air resistances through the first guiding valve 30a time of the first inlet opening 21a, so the pressure of exit orifice 11 can be used as connection exit orifice 11, the pressure in the space that between two guiding valves, forms.The pressure reduction of the first inlet opening 21a and exit orifice 11 is very little.
In the first rotary compressor R1 running, the second rotary compressor R2 starts, i.e. execution pattern F; The pressure of the second inlet opening 21b progressively uprises; When the pressure of the pressure of the second inlet opening 21b and the first inlet opening 21a was suitable, shown in figure 10, the second valve body 40b can open; The exhaust meeting interflow of the first rotary compressor R1 and the second rotary compressor R2, and flow in the exit orifice 11.Consequently: air conditioner or freeze cycle can be brought into play maximum ability.
Thereafter, when the first rotary compressor R1 one shuts down, i.e. execution pattern M, after the exhaust pressure of the first rotary compressor R1 begins to descend, can be littler than the pressure of exit orifice 11, so shown in figure 11, the first valve body 40a can close.Therefore, can prevent to go refrigerant or the refrigeration agent first rotary compressor R1 after operating second rotary compressor R2 inflow stops.
Consequently: the operating second rotary compressor R2 can not lose refrigerating capacity just can continue operation.The interior pressure of housing that is in the first rotary compressor R1 in the shutdown is identical with suction pressure Ps, so the first rotary compressor R1 in shutting down restarts at any time.
Rotary compressor or scroll compressor are after compressing mechanism quits work, and high pressure air cognition is leaked from high side to low side from the gap between the slide member, have to reach the pressure balanced characteristic of height rapidly.
Use one-way valve in the past replaces the equivalent effect and the function of above-mentioned twocouese one-way valve (S), and is shown in figure 12, needs to use two unidirectional one-way valves 100, and, use a T shape connecting tube 110 to connect between these two one-way valves 100.Position shown in the symbol B among Figure 13 must connect with soldering.
Compare with twocouese one-way valve of the present invention (S), above-mentioned check valve assembly adopts the structure of two one-way valves 100 and T shape connecting tube 110, has increased number of components and parts and soldering processes.In order to prevent to carry out the distortion of each component that the soldering heating causes at symbol B place, need the length of the whole check valve assembly of lengthening, this is a significant disadvantages comparatively.Figure 14 is the structural representation that the freeze cycle among the embodiment 1 has been used above-mentioned existing substitute technology.
As stated; The characteristics of twocouese one-way valve (S) are: built-in two one-way valves in a straight tube 20; And constitute with vertical tube 22 one as the outlet of gas, need not increase the amount of parts of control valve unit and the total length that welding requirements just can be shortened whole check valve assembly.The material and the manufacture cost of this twocouese one-way valve (S) also can be cut down.
Twocouese one-way valve (S) among the present invention not only can be applied in rotary compressor or the eddy type rotary compressor, but also can be used as the control valve for fluids extensive use.
Present embodiment is through the counter-rotating four-way valve, makes the example of using twocouese one-way valve (S) in air conditioner that the cooling and heating circulatory system can reverse or the freeze cycle.
Referring to Figure 10, the high pressure refrigerant of from the first rotary compressor R1, discharging flows through the order of four-way valve 7 by outdoor heat exchanger 45, expansion valve 2, indoor heat exchanger 46, and gets back to the first rotary compressor R1 from the first liquid-storage container 5a through four-way valve 7.
The first inlet opening 21a of twocouese one-way valve (S) and the second inlet opening 21b are connected in the loop of refrigerant inlet and refrigerant exit of expansion valve 2, i.e. first inlet opening 21a and the second inlet opening 21b of twocouese one-way valve (S) through setting on it two ends of being connected in parallel on expansion gear 2.The exit orifice 11 of twocouese one-way valve (S) connects the refrigerant supplying pipe 43 of the first rotary compressor R1.
When the freeze cycle of Figure 15 is carried out the refrigeration mode operation, being the high pressure side between outdoor heat exchanger 45 and the expansion valve 2, is low voltage side between expansion valve 2 and the indoor heat exchanger 46, and the second inlet opening 21b can close.Therefore, the high pressure refrigerant flows into refrigerant supplying pipe 43 from the first inlet opening 21a through exit orifice 11.
When the heating mode operation was carried out in four-way valve 7 counter-rotating, freeze cycle, two refrigerant heat exchangers: i.e. refrigerant reverse flow in outdoor heat exchanger 45 and the indoor heat exchanger 46, the first inlet opening 21a closed.Therefore, the high pressure refrigerant flows to refrigerant supply tube 43 since the second inlet opening 21b through exit orifice 11.
Switch even carry out the operating mode of freeze cycle like this, twocouese one-way valve (S) has always supplies with the effect to refrigerant supplying pipe 43 with the high pressure refrigerant.
All the other are not stated part and see first embodiment, no longer repeat.
Referring to Figure 16, the twocouese guiding valve 51 that twocouese one-way valve (T) 50 inserts by straight tube 20, in straight tube 20, second coil spring 52 and the first valve body 40a and the second valve body 40b that are configured in twocouese guiding valve 51 both sides respectively constitute.
Be provided with twocouese guiding valve 51, the first valve body 40a, the second valve body 40b and second coil spring 52 in the straight tube 20; The two ends of twocouese guiding valve 51 are respectively arranged with Conical Valve 33; Be provided with valve base channel among the first valve body 40a; This valve base channel communicates with the first inlet opening 21a of straight tube 20 1 ends; Conical Valve 33 shutoff of twocouese guiding valve 51 1 ends are in the valve base channel of the first valve body 40a; One second coil spring 52 is crimped between the first valve body 40a and twocouese guiding valve 51 1 ends, is provided with valve base channel among the second valve body 40b, and this valve base channel communicates with the second inlet opening 21b of straight tube 20 the other ends; Conical Valve 33 shutoff of twocouese guiding valve 51 the other ends are in the valve base channel of the second valve body 40b, and another second coil spring 52 is crimped between the second valve body 40b and twocouese guiding valve 51 the other ends.The periphery of twocouese guiding valve 51 is provided with more than one sliver, can form the circumferential groove of fluid passage between the inwall of this sliver and straight tube 20.
The both ends open of straight tube 20 is the first inlet opening 21a and the second inlet opening 21b, and the first inlet opening 21a and the acting hydrodynamic pressure of the second inlet opening 21b are respectively P1 and P2.The spring constant of two second relative coil springs 52 is set very for a short time.
Next, the action of twocouese one-way valve (T) 50 is described based on Figure 16-Figure 20.At first, the spring length of two second coil springs 52 is identical, and its spring constant also is identical.
If the hydrodynamic pressure of two relative inlet openings is identical, i.e. P1=P2, fluid do not flow, and be static in straight tube 20, shown in figure 16, stops between the twocouese guiding valve 51 first valve body 40a and the second valve body 40b.
But, shown in figure 17, when the pressure P 1 of fluid is bigger slightly than P2; Be P1＞P2, because the pressure reduction of this fluid, twocouese guiding valve 51 has mobile from the first inlet opening 21a to the second inlet opening 21b slightly; But because the elastic force of second coil spring 52 is bigger, so can not close the second valve body 40b.Therefore, fluid flows to the second inlet opening 21b from the first inlet opening 21a.
On the other hand, shown in figure 18, on the contrary, when P2 was bigger slightly than P1, promptly the occasion of P1＜P2 and Figure 17 was opposite, and fluid flows to the first inlet opening 21a from the second inlet opening 21b.
When the pressure reduction between P1 and the P2 is obviously big, promptly P1＞＞P2 or P1＜＜P2 because the bigger pressure reduction of fluid, the liquid speed that passes through to the inlet opening of other directions from inlet opening on one side becomes big.So fluid acts on the active force on the twocouese guiding valve 51, bigger than the aggregate value of two elastic force, that is to say, bigger than the aggregate value of the elastic force of two second coil springs 52.Therefore, P1＞＞during P2, shown in figure 19, twocouese guiding valve 51 stop at the second valve body 40b above.In addition, on the contrary, P1＜＜during P2, shown in figure 20, twocouese guiding valve 51 stops on the first valve body 40a and stops.
Like this, twocouese guiding valve 51 1 cut-off valve pedestals: the first valve body 40a or the second valve body 40b, though flowing of fluid stops, pressure reduction is constant, therefore, twocouese guiding valve 51 can not break away from from valve body.But; Subsequently, this pressure difference diminishes, if the active force that acts on the twocouese guiding valve 51 is littler than the summation of the setting value of predefined two second coil springs 52; That is to say; The summation of setting value of elastic force that fluid acts on two second coil springs 52 of force rate on the valve body is little, and twocouese guiding valve 51 will break away from from valve body, has turned back to the state of Figure 17 or Figure 18.Promptly show as: during the summation of the setting value of pressure difference＜two of the first inlet opening 21a and the second inlet opening 21b, second coil spring 52, the first inlet opening 21a and the second inlet opening 21b open simultaneously; During the summation of the setting value of pressure difference＞two of the first inlet opening 21a and the second inlet opening 21b, second coil spring 52, the first inlet opening 21a or the second inlet opening 21b close.
Then, the application examples according to twocouese one-way valve (T) 50 specifies action.As shown in Figure 6; Between the first rotary compressor R1 and the second rotary compressor R2, be equipped with twocouese one-way valve (T) 50; The first inlet opening 21a of this twocouese one-way valve (T) 50 is connected through connecting tube with the second inlet opening 21b, during connection respectively to the enclosure interior opening of the first rotary compressor R1 and the second rotary compressor R2.Be to communicate in the housing of the first inlet opening 21a through first connecting tube and the first rotary compressor R1 of twocouese one-way valve (T) 50, communicate in the housing of the second inlet opening 21b of twocouese one-way valve (T) 50 through second connecting tube and the second rotary compressor R2.In order to obtain preferable effect, each connecting tube is the opening at the best pasta height and position place of each rotary compressor respectively.
The first rotary compressor R1 and the second rotary compressor R2 be in when operation, i.e. execution pattern F, and the housing pressure Pd of these two rotary compressors has only a little difference.This pressure differential deltap p is by the discharge capacity of two rotary compressors, the rotating speed of rotary compressor, when it is inverter controlled rotary compressor and the decisions such as air resistance in exhaust loop.
The occasion that the housing pressure P1 of the first rotary compressor R1 is higher slightly than the housing pressure P2 of rotary compressor R2; When being P1＞P2; State for Figure 17; The oil that is trapped in the surplus in the housing of the first rotary compressor R1 through twocouese one-way valve (T) 50 can flow among the second rotary compressor R2, and the first rotary compressor R1 can reduce oil mass and reach optimization.Meanwhile, not enough oil can be replenished among the second rotary compressor R2.
The housing pressure P2 of the second rotary compressor R2 is than under the high situation of the housing pressure P1 of rotary compressor R1, promptly during P1＜P2, is the state of Figure 18, and flowing of fluid is opposite with Figure 17.The oil that the first rotary compressor R1 is not enough can be replenished.
Through the fuel feeding of the first rotary compressor R1, when guarantor's oil mass of the second rotary compressor R2 was superfluous, superfluous oil can be discharged from the second exhaust pipe 4b of the second rotary compressor R2.The oil of discharging is stored in the oil separator 6, next, again through liquid-storage container, is assigned to the enclosure interior of two rotary compressors.Just, make the trapped fuel amount of two rotary compressors reach best state of equilibrium through constituting such circulatory system.
Do not have superfluously when oily as fuel feeding one side's the first rotary compressor R1, this first rotary compressor R1 can supply with the opposing party, the i.e. enclosure interior of the second rotary compressor R2 with the pressurized gas of enclosure interior.Because two rotary compressors are in operation, so these two rotary compressors any problem can not take place owing to the supply of pressurized gas.
But; Confession between two rotary compressors like this receives oil system; When the side's rotary compressor that is in operation stops, perhaps, when having only a side rotary compressor startup; Like embodiment 1 explanation, need prevent the outflow of supplying oil or pressurized gas from the rotary compressor of operating rotary compressor to stopping.Next the countermeasure that prevents to flow out is described.
Continue the rotary compressor and the rotary compressor that stops of operation or stop in rotary compressor between, the pressure reduction of housing sharply enlarges, promptly P1＞＞P2 or P1＜＜P2.
At this moment, like Figure 19 or shown in Figure 20, can stop from the oil of the rotary compressor of operating rotary compressor to stopping or the outflow of gas.When being in arbitrary side in two rotary compressors in stopping and starting, and still be between the rotary compressor in stopping bigger pressure reduction can take place, so do not have the outflow of oil or gas equally.
As a reference; Enclosure interior pressure is the enclosure interior pressure of the rotary compressor of high pressure when carrying in air-conditioning, operating two rotary compressors; Be equivalent to above-mentioned P1 and P2; Owing to use refrigerant different, but about 1.5～3.0Mpa, the difference of P1 and P2 is below 0.02Mpa.
The housing pressure of the rotary compressor of shutting down sharply descends, and thereafter, slowly reduces up to suitable with the pressure of inspiration(Pi) Ps of operating rotary compressor.At this moment pressure P s is the scope of 0.3～1.0Mpa.
Substitute technology as embodiment 2; In order to obtain the effect suitable with twocouese one-way valve (T) 50; In existing freeze cycle shown in Figure 14; Be equipped with electromagnetic switch valve 200 between two rotary compressors, and electromagnetic switch valve 200 need carry out motor switch control to reach and the startup of rotary compressor and the purpose that stops to link.
With these compared with techniques in the past, the twocouese one-way valve that embodiment 2 discloses can carry out auto-action through pressure reduction and there is no need to control.And have characteristics simple in structure, that fabricating cost is low.
Among the embodiment 2 the twocouese one-way valve still can not be applied in rotary compressor, also can in general fluid means, be applied.
Claims (9)
1. twocouese one-way valve; It is characterized in that in straight tube (20), being provided with first guiding valve (30a), first valve body (40a), second guiding valve (30b), second valve body (40b) and first coil spring (35); The central authorities of straight tube (20) are provided with the vertical tube (22) that communicates with straight tube (20) and have exit orifice (11); First guiding valve (30a) and first valve body (40a) are arranged on a side of vertical tube (22); Second guiding valve (30b) and second valve body (40b) are arranged on the opposite side of vertical tube (22); First coil spring (35) is crimped between first guiding valve (30a) and second guiding valve (30b), is provided with valve base channel (42) in first valve body (40a), and this valve base channel (42) communicates with first inlet opening (21a) of straight tube (20) one ends; Conical Valve (33) shutoff on first guiding valve (30a) is in the valve base channel (42) of first valve body (40a); Be provided with valve base channel (42) in second valve body (40b), this valve base channel (42) communicates with second inlet opening (21b) of straight tube (20) the other end, and Conical Valve (33) shutoff on second guiding valve (30b) is in the valve base channel (42) of second valve body (40b).
2. twocouese one-way valve according to claim 1; The periphery that it is characterized in that said first guiding valve (30a) and second guiding valve (30b) is provided with more than one sliver (31), can form the circumferential groove (32) of fluid passage between the inwall of this sliver (31) and straight tube (20).
3. twocouese one-way valve according to claim 1 and 2; It is characterized in that said twocouese one-way valve is arranged in the freeze cycle; This freeze cycle comprises first rotary compressor (R1) and second rotary compressor (R2), condenser (1), expansion gear (2) and vaporizer (3) at least; First inlet opening (21a) of twocouese one-way valve communicates with the downtake pipe (4a) of first rotary compressor (R1); Second inlet opening (21b) of twocouese one-way valve communicates with the second exhaust pipe (4b) of second rotary compressor (R2), and the exit orifice of twocouese one-way valve (11) communicates with an end of condenser (1).
4. twocouese one-way valve according to claim 1 and 2; It is characterized in that said twocouese one-way valve is arranged in the freeze cycle; This freeze cycle comprises first rotary compressor (R1), condenser (1), four-way valve (7), expansion gear (2) and vaporizer (3) at least; The two ends that the twocouese one-way valve is connected in parallel on expansion gear (2) through first inlet opening (21a) that is provided with on it and second inlet opening (21b); The exit orifice of twocouese one-way valve (11) communicates with the refrigerant supplying pipe (43) of first rotary compressor (R1), and this refrigerant supplying pipe (43) is communicated with the cylinder compression chamber of first rotary compressor (R1).
5. the controlling method of a twocouese one-way valve as claimed in claim 1, when it is characterized in that the pressure of pressure＞exit orifice (11) of first inlet opening (21a) or second inlet opening (21b), first inlet opening (21a) or second inlet opening (21b) opens; During the pressure of pressure≤exit orifice (11) of first inlet opening (21a) or second inlet opening (21b), first inlet opening (21a) or second inlet opening (21b) closes.
6. twocouese one-way valve; It is characterized in that in straight tube (20), being provided with twocouese guiding valve (51), first valve body (40a), second valve body (40b) and second coil spring (52); The two ends of twocouese guiding valve (51) are respectively arranged with Conical Valve (33); Be provided with valve base channel in first valve body (40a); This valve base channel communicates with first inlet opening (21a) of straight tube (20) one ends, and Conical Valve (33) shutoff of twocouese guiding valve (51) one ends is in the valve base channel of first valve body (40a), and one second coil spring (52) is crimped between first valve body (40a) and twocouese guiding valve (51) one ends; Be provided with valve base channel in second valve body (40b); This valve base channel communicates with second inlet opening (21b) of straight tube (20) the other end, and Conical Valve (33) shutoff of twocouese guiding valve (51) the other end is in the valve base channel of second valve body (40b), and another second coil spring (52) is crimped between second valve body (40b) and twocouese guiding valve (51) the other end.
7. twocouese one-way valve according to claim 6 is characterized in that the periphery of said twocouese guiding valve (51) is provided with more than one sliver, can form the circumferential groove of fluid passage between the inwall of this sliver and straight tube (20).
8. according to claim 6 or 7 described twocouese one-way valves; It is characterized in that said twocouese one-way valve is arranged in the freeze cycle; This freeze cycle comprises first rotary compressor (R1) and second rotary compressor (R2), condenser (1), expansion gear (2) and vaporizer (3) at least; Communicate in the housing of first inlet opening (21a) of twocouese one-way valve through connecting tube and first rotary compressor (R1), communicate in the housing of second inlet opening (21b) of twocouese one-way valve through connecting tube and second rotary compressor (R2).
9. the controlling method of a twocouese one-way valve as claimed in claim 6; When it is characterized in that the summation of setting value of pressure difference＜two second coil spring (52) of first inlet opening (21a) and second inlet opening (21b), first inlet opening (21a) opens with second inlet opening (21b) simultaneously; During the summation of the setting value of pressure difference＞two second coil spring (52) of first inlet opening (21a) and second inlet opening (21b), first inlet opening (21a) or second inlet opening (21b) closes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101347932A CN102797875A (en) | 2011-05-23 | 2011-05-23 | Bidirectional one-way valve and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101347932A CN102797875A (en) | 2011-05-23 | 2011-05-23 | Bidirectional one-way valve and control method thereof |
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| CN102797875A true CN102797875A (en) | 2012-11-28 |
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| CN2011101347932A Pending CN102797875A (en) | 2011-05-23 | 2011-05-23 | Bidirectional one-way valve and control method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603973A (en) * | 2013-11-28 | 2014-02-26 | 天津市国威给排水设备制造有限公司 | Controllable check valve |
| CN104214365A (en) * | 2014-08-04 | 2014-12-17 | 中国科学院植物研究所 | Non-return three-way valve |
| CN106907509A (en) * | 2015-12-23 | 2017-06-30 | 珠海格力电器股份有限公司 | Check valve and air-conditioner |
| ES2624914A1 (en) * | 2016-01-15 | 2017-07-18 | Airfire Worldwide, S.L. | Unidirectional retention valve with various fluid inputs (Machine-translation by Google Translate, not legally binding) |
| CN107869600A (en) * | 2016-09-27 | 2018-04-03 | 惠州科赛医疗有限公司 | A kind of switching valve |
| CN108662211A (en) * | 2018-07-14 | 2018-10-16 | 温州市欧睿阀门有限公司 | A kind of double check valve |
| CN108980422A (en) * | 2018-09-12 | 2018-12-11 | 苏州丹顿机电有限公司 | A kind of check valve in adjustable cutoff direction |
| CN109027332A (en) * | 2018-09-12 | 2018-12-18 | 苏州丹顿机电有限公司 | A kind of check valve in adjustable cutoff direction |
| CN109578633A (en) * | 2018-12-03 | 2019-04-05 | 潍柴动力股份有限公司 | A kind of check-valves and the engine with it |
| CN111379882A (en) * | 2018-12-28 | 2020-07-07 | 任荣均 | Check valve structure |
| CN111623147A (en) * | 2020-05-13 | 2020-09-04 | 温州东特科技有限公司 | Sanitary grade three-way valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103603973B (en) * | 2013-11-28 | 2016-07-13 | 天津市国威给排水设备制造有限公司 | A kind of controllable check valve |
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| CN104214365A (en) * | 2014-08-04 | 2014-12-17 | 中国科学院植物研究所 | Non-return three-way valve |
| CN106907509B (en) * | 2015-12-23 | 2023-08-18 | 珠海格力电器股份有限公司 | Check valve and air conditioner |
| CN106907509A (en) * | 2015-12-23 | 2017-06-30 | 珠海格力电器股份有限公司 | Check valve and air-conditioner |
| ES2624914A1 (en) * | 2016-01-15 | 2017-07-18 | Airfire Worldwide, S.L. | Unidirectional retention valve with various fluid inputs (Machine-translation by Google Translate, not legally binding) |
| CN107869600A (en) * | 2016-09-27 | 2018-04-03 | 惠州科赛医疗有限公司 | A kind of switching valve |
| CN108662211A (en) * | 2018-07-14 | 2018-10-16 | 温州市欧睿阀门有限公司 | A kind of double check valve |
| CN109027332A (en) * | 2018-09-12 | 2018-12-18 | 苏州丹顿机电有限公司 | A kind of check valve in adjustable cutoff direction |
| CN108980422A (en) * | 2018-09-12 | 2018-12-11 | 苏州丹顿机电有限公司 | A kind of check valve in adjustable cutoff direction |
| CN109578633A (en) * | 2018-12-03 | 2019-04-05 | 潍柴动力股份有限公司 | A kind of check-valves and the engine with it |
| CN111379882A (en) * | 2018-12-28 | 2020-07-07 | 任荣均 | Check valve structure |
| CN111379882B (en) * | 2018-12-28 | 2022-03-18 | 西马智能科技股份有限公司 | Check valve structure |
| CN111623147A (en) * | 2020-05-13 | 2020-09-04 | 温州东特科技有限公司 | Sanitary grade three-way valve |
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Application publication date: 20121128 |