CN109312970A - Expansion valve and the refrigerating circulatory device for having the expansion valve - Google Patents
Expansion valve and the refrigerating circulatory device for having the expansion valve Download PDFInfo
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- CN109312970A CN109312970A CN201680085852.2A CN201680085852A CN109312970A CN 109312970 A CN109312970 A CN 109312970A CN 201680085852 A CN201680085852 A CN 201680085852A CN 109312970 A CN109312970 A CN 109312970A
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- needle
- expansion valve
- hole
- throttle orifice
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
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- General Engineering & Computer Science (AREA)
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- Temperature-Responsive Valves (AREA)
Abstract
Expansion valve (10) has valve body (12), and the valve body is provided with valve chamber (14).The intercommunicating pore (26) and throttle orifice (22) being connected to respectively with valve chamber (14) are formed in valve body (12).The first piping and the second piping (32) are connected in valve body (12).First piping is connected to intercommunicating pore (26).Second piping (32) is connected to throttle orifice (22).In expansion valve (10), when needle (16) carries out reciprocating action between lowest point and top point, always with the inner peripheral surface of throttle orifice (22) is opposite, facing part (FN) between the position (PN3) being located in needle (16) and position (PN2), be formed with the through hole (18) for penetrating through needle (16).
Description
Technical field
The present invention relates to a kind of expansion valve and have the refrigerating circulatory device of the expansion valve, and is related to a kind of there is valve
The expansion valve of needle and throttle orifice and the refrigerating circulatory device for having such expansion valve.
Background technique
As refrigerating circulatory device, there is following air-conditioning device, has and be connected with compressor, condenser, expansion valve in turn
And the refrigerant circuit of evaporator.
The expansion valve of refrigerating circulatory device (air-conditioning device) has following function, that is, will chilled height within the condenser
The liquid refrigerant of pressure is decompressed to the flow for holding evaporable state in evaporator, and adjusting refrigerant.Expansion valve has
Throttle orifice and needle, needle are inserted through throttle orifice.By changing position of the needle relative to throttle orifice, to adjust the pressure of refrigerant
Power and flow.
Sound (refrigerant sound) is generated when the known gap for flowing through throttle orifice and needle in refrigerant.For example, indoors
In air-conditioning, as refrigerant sound, the sound that frequency is about 5~10kHz or so is generated.In the past, in order to inhibit the refrigerant sound
Sound takes various countermeasures (such as patent document 1 and patent document 2).
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 07-91778 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2000-346495 bulletin
Summary of the invention
Problem to be solved by the invention
As described above, generating the refrigeration as caused by the refrigerant for flowing to expansion valve in the running in refrigerating circulatory device
Agent sound, and take various countermeasures.The present invention is the ring as the countermeasure of the refrigerant sound and completes, the first purpose
It is to provide a kind of expansion valve that refrigerant sound is inhibited, another object, which is to provide, a kind of has such expansion valve
Refrigerating circulatory device.
The means used to solve the problem
An expansion valve of the invention has valve body and needle.Valve body includes valve chamber and the throttling that is connected to valve chamber
Hole.Needle is inserted through throttle orifice, the reciprocating action between minimum first position and the highest second position.When needle is first
Between position and the second position when reciprocating action, perforation needle is formed in the part of the needle opposite with the inner peripheral surface of throttle orifice
Part through hole.
Another expansion valve of the invention has valve body and needle.Valve body includes valve chamber and the throttling that is connected to valve chamber
Hole.Needle is inserted through throttle orifice, the reciprocating action between minimum first position and the highest second position.When needle is first
Between position and the second position carry out reciprocating action when, the needle opposite with the inner peripheral surface of throttle orifice outer circumferential surface section and with
The week face of at least one party of the inner circumferential face of the opposite throttle orifice of the outer peripheral surface of needle, is formed with slot along all faces.
Refrigerating circulatory device of the invention has above-mentioned expansion valve.
Invention effect
An expansion valve according to the present invention, by inhibiting the self-excited vibration of needle to can reduce refrigerant sound.
Another expansion valve according to the present invention, by inhibiting the self-excited vibration of needle to can reduce refrigerant sound.
Refrigerating circulatory device according to the present invention can reduce the refrigerant sound of the refrigerant flowed in expansion valve.
Detailed description of the invention
Fig. 1 is the figure for indicating to have the refrigerating circuit of the refrigerating circulatory device of the expansion valve of embodiment 1.
Fig. 2 is the broken section including a part of side of expansion valve used in refrigerating circulatory device in the embodiment
Figure.
Fig. 3 is in the embodiment for illustrating the first partial section view including a part of side of the movement of expansion valve
Figure.
Fig. 4 is in the embodiment for illustrating the second broken section including a part of side of the movement of expansion valve
Figure.
Fig. 5 is the enlarged partial isometric view that the construction of the needle in expansion valve is indicated in the embodiment.
Fig. 6 is the amagnified partial perspective of the flowing of the refrigerant in the throttle in the embodiment for illustrating expansion valve
Figure.
Fig. 7 is in the embodiment for illustrating the partial top view of the vibration of the needle in expansion valve.
Fig. 8 is in the embodiment for illustrating that the partial enlargement including a part of side of the function and effect of expansion valve cuts open
View.
Fig. 9 is the enlarged partial isometric view that the needle of expansion valve of first variation is indicated in the embodiment.
Figure 10 is in the embodiment from the top view of end on observation needle shown in Fig. 9.
Figure 11 is the enlarged partial isometric view that the needle of expansion valve of the second variation is indicated in the embodiment.
Figure 12 is the enlarged partial isometric view of the construction of the needle in the expansion valve for indicate embodiment 2.
Figure 13 is in the embodiment for illustrating the partial enlargement including a part of side of the function and effect of expansion valve
Cross-sectional view.
Figure 14 is the enlarged partial isometric view that the needle of expansion valve of first variation is indicated in the embodiment.
Figure 15 is the enlarged partial isometric view that the needle of expansion valve of the second variation is indicated in the embodiment.
Figure 16 is the partial enlargement including a part of section of the construction of the throttle orifice in the expansion valve for indicate embodiment 3
Perspective view.
Figure 17 is in the embodiment for illustrating the partial enlargement including a part of section of the function and effect of expansion valve
Perspective view.
Figure 18 is to indicate that the part including a part of section of the throttle orifice of expansion valve of variation is put in the embodiment
Big perspective view.
Specific embodiment
Embodiment 1
The expansion valve of embodiment 1 is illustrated with the refrigerating circulatory device for having the expansion valve.Firstly, to as system
The air-conditioning device of SAPMAC method device is illustrated.
As shown in Figure 1, it is formed with refrigerant circuit in air-conditioning device 2 (refrigerating circulatory device 1), the refrigerant circuit
It is connected with compressor 4, condenser 6, expansion valve 10 and evaporator 8 in turn.High temperature is become by the compressed refrigerant of compressor 4
The gas refrigerant of high pressure and from compressor 4 be discharged.The gas refrigerant of the high temperature and pressure of discharge is conveyed to condenser 6.Cold
In condenser 6, heat exchange is carried out between the air in the refrigerant and feeding condenser 6 of inflow.Pass through heat exchange, high temperature and pressure
Gas refrigerant condensation, become the liquid refrigerant (single-phase) of high pressure.
The liquid refrigerant for the high pressure sent out from condenser 6 becomes the gas refrigerant and liquid of low pressure by expansion valve 10
The refrigerant of the two-phase state of refrigerant.The refrigerant of two-phase state flows into evaporator 8.In evaporator 8, in the two-phase of inflow
Heat exchange is carried out between the refrigerant of state and the air being sent into evaporator 8.By heat exchange, liquid refrigerant evaporates, at
For the gas refrigerant (single-phase) of low pressure.
The gas refrigerant for the low pressure sent out from evaporator 8 flows into compressor 4, is become the gas of high temperature and pressure by compression
Refrigerant.The gas refrigerant of high temperature and pressure is discharged from compressor 4 again and conveys to condenser 6.Hereinafter, repeating the circulation.
Then, expansion valve 10 used in air-conditioning device 2 is illustrated.Expansion valve 10 has following function, that is, will be
The liquid refrigerant of condensed high pressure, which is depressurized in evaporator 8, in condenser 6 holds evaporable state, and adjusts refrigeration
The flow of agent.
As shown in Fig. 2, expansion valve 10 has valve body 12.Valve body 12 is provided with valve chamber 14.In the formation of valve body 12
There are the intercommunicating pore 26 and throttle orifice 22 being connected to respectively with valve chamber 14.The first piping 30 and the second piping are connected in valve body 12
32.First piping 30 is connected to intercommunicating pore 26.Second piping 32 is connected to throttle orifice 22.
Insert has needle 16 in throttle orifice 22.Throttle 11 is made of throttle orifice 22 and needle 16.By making needle 16
Change the size in the gap of throttle 11 along axial reciprocating movement (reference arrow).Fig. 3 indicates the shape that throttle 11 is fully closed
State.The state is the state that needle 16 is located at lowest point (first position).In this state, the end of needle 16 and throttle orifice 22
Contact, the flow path of throttle 11 are closed.
On the other hand, Fig. 4 is indicated the state of 11 standard-sized sheet of throttle.The state is that needle 16 is located at top point (second
Set) state.In this state, the gap of needle 16 and throttle orifice 22 is maximum.As the flow path of throttle 11, it is formed with most wide
Flow path.In expansion valve 10, by sliding needle 16 between lowest point and top point, change the flow path of throttle 11
Width (flow path area), so as to adjust the pressure and flow of refrigerant.
In the expansion valve 10 of embodiment 1, the needle of reciprocating action (sliding action) between lowest point and top point
In 16, through hole is formed in the part (facing part) of the needle 16 opposite with the inner peripheral surface of throttle orifice 22.
Firstly, as shown in figure 3, being located at position PN1 and position PN2 in needle 16 in the state that throttle is fully closed
Between part and throttle orifice 22 inner peripheral surface it is opposite.On the other hand, as shown in figure 4, in the state that throttle is standard-sized sheet, valve
Part between position PN3 and position PN4 in needle 16 and the inner peripheral surface of throttle orifice 22 are opposite.
Then, when the reciprocating action between lowest point and top point of needle 16, it is located at position PN3 and position in needle 16
The part (facing part FN) set between PN2 is opposite with the inner peripheral surface of throttle orifice 22 always.As shown in figure 5, in expansion valve 10,
In its facing part, FN is formed with the through hole 18 of perforation needle 16.Here, as an example, through hole 18 is formed as passing through needle
16 central axis AC.
In above-mentioned expansion valve 10, by being formed with through hole 18 in needle 16, can aid in reduces refrigerant sound
Sound.It is explained.Firstly, being illustrated to refrigerant sound.
The sound generation source of refrigerant sound is the needle of expansion valve.In the presence of the vibrator source for applying vibration to the sound generation source.Vibrator
Source includes self-excited vibration and liquid column resonance.Needle has eigentone, if its eigentone and vibrator source occur altogether
Vibration, then generate refrigerant sound.
Self-excited vibration is the vibration as caused by the gap of expansion valve.As described above, making needle 16 most in expansion valve 10
It is slided between lower point and top point, changes the width (flow path area) of the flow path of throttle 11, so as to adjust the pressure of refrigerant
And flow.The needle for carrying out reciprocating action is provided with gap.
Due to being provided with gap, inclined of the central axis of needle relative to throttle orifice sometimes.When needle inclines
When oblique, the gap between needle and throttle orifice generates relatively wide position and relatively narrow position in the circumferential.In relief width
Position flowing refrigerant speed ratio gap it is narrow position flowing refrigerant speed it is slow.Therefore, in needle and section
The static pressure of the refrigerant of gap flowing between discharge orifice generates difference in the circumferential, as a result, needle vibration (self-excited vibration).
On the other hand, liquid column resonance generates in the state of flowing through the refrigerant of expansion valve and being liquid refrigerant.Fluid column is total
Vibration according to the relationship of the eigentone of the vibration frequency and expansion valve determined by the configuration for being connected to the piping of expansion valve and
It generates, the vibration frequency is found out by the wavelength of refrigerant and the velocity of sound of liquid refrigerant.
The vibration frequency of liquid refrigerant is not the same in expansion valve.Therefore, if the vibration frequency of liquid refrigerant
As the value close to eigentone, then cause to resonate, needle vibration.In addition, in the vibration frequency of liquid refrigerant and solid
The multiple frequency for the vibration frequency for having the vibration frequency of a side of vibration frequency to become another party also causes altogether under such circumstances
Vibration, needle vibration.
In the expansion valve 10 of embodiment 1, it is particular enable to inhibit in self-excited vibration and the liquid column resonance as vibrator source
Self-excited vibration.To this further description.
As described above, the gap between needle and throttle orifice generates relatively wide position and relatively narrow portion in the circumferential
Position.When refrigerant flows through gap, at the position and the narrow position in gap of relief width, the position at gap narrow position and relief width
It compares, is easy to be influenced by viscosity.Therefore, as shown in fig. 6, the speed ratio in the refrigerant of the narrow position NA flowing in gap exists
The speed of the refrigerant of the position WA flowing of relief width is low (reference arrow).As a result, by the system in the narrow position NA flowing in gap
The static pressure ratio that cryogen generates is high in the static pressure of the position WA of the relief width refrigerant flowed.
Therefore, needle 16 is exerted a force from the narrow side in gap to the side of relief width.By exerting a force to needle 16, gap is narrow
The gap at position be gradually expanded, on the other hand, the gap at the position of relief width becomes narrow gradually.As a result, as shown in fig. 7, needle
16 are exerted a force towards right side, and state shown in the left figure from Fig. 7 becomes shape shown in right figure by state shown in central figure
State.
When the state shown in the right figure as Fig. 7, the side narrow from gap is and just now opposite towards the side of relief width
Ground is exerted a force towards left, and state shown in the right figure from Fig. 7 becomes shape shown in left figure by state shown in central figure
State.Hereinafter, by the way that the movement, needle self-excited vibration is repeated.It is many and diverse in order to avoid attached drawing in addition, in Fig. 7, it shows
One-dimensional vibration, but actual vibration is two-dimensional vibration.
Here, the position of relief width is spatially connected with the narrow position in gap.Therefore, if the pressure at the narrow position in gap
Power (static pressure) is higher than the pressure (static pressure) at the position of relief width, then pressure should be released from the narrow position in gap to the position of relief width
It puts.
But since refrigerant passes through the small gap between needle and throttle orifice, the speed of refrigerant flowing
Fastly.Therefore, before the position release in pressure from narrow position to relief width, refrigerant is by gap, because of the narrow portion of this gap
The pressure (static pressure) of position and the pressure (static pressure) at the position of relief width are kept.That is, the movement of needle is repeated.
In such a case, in case of liquid column resonance, then there is the case where amplifying self-excited vibration.If also, from
The vibration frequency of excited vibration close to expansion valve eigentone value, then cause to resonate, generate refrigerant sound.For example,
Indoors in air-conditioning, the refrigerant sound that frequency is about 5~10kHz or so is generated.
As shown in figure 5, in the expansion valve 10 of embodiment 1, when the past double action between lowest point and top point of needle 16
When making, perforation needle 16 is formed in the part (facing part FN) of the needle 16 opposite always with the inner peripheral surface of throttle orifice 22
Through hole 18.Through hole 18 is formed in the mode substantially orthogonal with the flowing of the refrigerant flowed in throttle 11.
As a result, as shown in figure 8, not will receive the influence of the flowing of refrigerant, position that can be narrow from the high gap of static pressure
The position of the relief width low to static pressure releases stress (static pressure).As a result, be able to suppress as vibrator source self-excited vibration and
Self-excited vibration in liquid column resonance reduces refrigerant sound.
Refrigerating circulatory device uses under circumstances in countries in the world.According to the specification of the environmental selection expansion valve (Gu
Have vibration frequency) etc. become cost increase the main reason for.For example, in low outside air refrigeration operation, sometimes in expansion valve
Entrance side and outlet side both sides be all liquid refrigerant.In this case, the entrance side for not only needing to consider expansion valve, also needs
Consider the liquid column resonance of outlet side.In addition, being easy further to produce due to the cavitation of the refrigerant flowed in throttle
Raw refrigerant sound.
In the expansion valve 10 of embodiment 1, through hole 18 only is formed in needle 16, can be pressed down in the inside of expansion valve 10
Refrigerant sound processed, thereby, it is possible to provide the refrigerating circulatory device for inhibiting cost.In addition, by inhibiting refrigerant sound, energy
Comfortable environment is enough provided.In addition, in actual air-conditioning device (refrigerating circulatory device), in heating operation and refrigeration operation
In, the direction of the refrigerant flowed in expansion valve becomes mutually opposite direction, but the flowing of any direction can be dropped
Low refrigerant sound.
In addition, the needle as expansion valve, there is the needle (such as patent document 2) for applying porous plastid.Porous plastid
It is formed with multiple apertures.Therefore, a part of aperture has function identical with through hole sometimes.Porous plastid has defined
Specification (average pore size, voidage or pitch of holes etc.) manufactures.
But in the needle for applying porous plastid, specific hole, pore are not formed in specific position
It is randomly formed in needle.Therefore, even if needle is identical relative to the position of throttle orifice, the refrigerant flowed in pore
Amount can also generate deviation.That is, the flow of refrigerant generates difference in each expansion valve.
In addition, in porous plastid, (axial direction of needle) extends along longitudinal direction pore with laterally (just with axially of needle
The direction of friendship) on the pore that penetrates through be connected.Therefore, the refrigeration that the flowing for the refrigerant that transversely flow will be flowed along longitudinal direction
Agent hinders, and static pressure is difficult to discharge.
On the other hand, the purpose of the through hole 18 formed in the needle 16 of the expansion valve 10 of embodiment 1 is to discharge pressure
Power (static pressure), purpose are different from the flow path for energetically flowing refrigerant.Therefore, it as through hole 18, does not need as Porous
The such enlarged openings area of body.Therefore, it is formed in needle 16 in the expansion valve 10 of embodiment 1 of through hole 18, with application
The expansion valve of porous plastid is compared, and can be reliably suppressed refrigerant sound.
(first variation)
In the expansion valve of first variation, multiple through holes are formed in needle.As shown in FIG. 9 and 10, in needle
In 16, the perforation of perforation needle 16 is formed in the facing part FN opposite with the inner peripheral surface of throttle orifice 22 (referring to Fig. 3 and Fig. 4)
Hole 18a and through hole 18b.
The central axis AC direction position (short transverse position) that through hole 18a and through hole 18b is formed in needle 16 is different
Position.That is, here, through hole 18a (height H2) is formed in the position lower than through hole 18b (height H3).In addition, through hole
The circumferential position of 18a and through hole 18b is different, is formed in the mode for overlooking substantially orthogonal.In addition, through hole 18a and through hole
18b is formed in a manner of through central axis AC.
By keeping the height H2 of through hole 18a different from the height H3 of through hole 18b, thus even if needle 16 relative to
In the case where the change in location of throttle orifice, the pressure at the narrow position in gap also can be efficiently discharged into the position of relief width.
In addition, the circumferential position by through hole 18a is different from the circumferential position of through hole 18b, become so as to be reliably suppressed
The self-excited vibration of the needle of two-dimension vibration.
(the second variation)
In above-mentioned expansion valve, illustrate to be parallel to the plane earth substantially orthogonal with the central axis AC of needle and be formed with
The case where through hole.As the through hole 18 for being formed in needle 16, it is not limited to such configuration, such as can also be such as Figure 11 institute
Show, through hole 18 is formed as tilting in a manner of with the level-crossing.That is, through hole 18 can also be formed as height H4 and height
Spend H5 connection.The pressure at the narrow position in gap can be also discharged into the position of relief width by through hole 18 in this way.By
This, can reduce refrigerant sound.
Embodiment 2
In the embodiment 1, the expansion valve for being formed with through hole in needle is illustrated.Here, in needle shape
It is illustrated at slotted expansion valve.
As shown in figure 12, in needle 16, with opposite opposite of the inner peripheral surface of throttle orifice 22 (referring to Fig. 3 and Fig. 4)
Part FN is formed with cricoid slot 20 along the outer peripheral surface of needle 16.Slot 20 and through hole 18 are same, are not by refrigerant from valve
The access that room 14 is energetically sent out, but formed as the access of the static pressure for discharging refrigerant.In addition, for removing this
Structure in addition marks identical appended drawing reference to same parts due to identical as expansion valve shown in Fig. 2, in addition to must
Its explanation is not repeated other than the case where wanting.
In above-mentioned expansion valve 10, when refrigerant flows through the gap of needle 16 and throttle orifice 22, in slot 20, it is not easy
It is influenced by the flowing.As a result, as shown in figure 13, pressure (static pressure) can be made narrow from the high gap of static pressure along cricoid slot
Position to the position of the low relief width of static pressure discharge (reference arrow).As a result, self-excited vibration is suppressed, system can reduce
Cryogen sound.In addition, slot can be formed and implementing machining to needle.Thereby, it is possible to press down the rising of manufacturing cost
Make minimum limit.
(first variation)
In the expansion valve of first variation, multiple slots are formed in needle.As shown in figure 14, in needle 16, with
The facing part FN of the opposite needle 16 of the inner peripheral surface of throttle orifice 22 (referring to Fig. 3 and Fig. 4), is formed with cricoid along outer peripheral surface
Slot 20a and slot 20b.Slot 20a and slot 20b is formed in the different position in central axis AC direction position (short transverse position) of needle 16
It sets.That is, here, slot 20a is formed in the position higher than slot 20b.
By keeping the height (position) of slot 20a different from height (position) of slot 20b, thus even if needle 16 relative to
In the case where the change in location of throttle orifice, the pressure at the narrow position in gap also can be efficiently discharged into the position of relief width.
In addition, being formed as cyclic annular along the outer peripheral surface of needle by slot 20a, 20b, so as to be reliably suppressed the valve for becoming two-dimension vibration
The self-excited vibration of needle.
(the second variation)
In above-mentioned expansion valve, illustrate to be parallel to the plane earth substantially orthogonal with the central axis AC of needle and be formed with
The case where slot.As the slot 20 for the outer peripheral surface for being formed in needle 16, it is not limited to such configuration, such as can also be such as Figure 15 institute
Show, slot 20 by relative to the plane it is inclined in a manner of formed.Slot 20 in this way, also can be by the pressure at the narrow position in gap
It is discharged into the position of relief width.Thereby, it is possible to reduce refrigerant sound.
Embodiment 3
In embodiment 2, it is illustrated to slotted expansion valve is formed in needle.Here, being formed in throttle orifice
Slotted expansion valve is illustrated.
As described in Embodiment 1, the needle of expansion valve relative to throttle orifice lowest point and top point it
Between reciprocating action (sliding action).Firstly, as shown in figure 3, being located at position in throttle orifice 22 in the state that throttle is fully closed
It sets part between PO1 and position PO2 and needle 16 is opposite.On the other hand, as shown in figure 4, in the state that throttle is standard-sized sheet
Under, the part between position PO1 and position PO3 and needle 16 in throttle orifice 22 are opposite.
Then, when the reciprocating action between lowest point and top point of needle 16, in throttle orifice 22 be located at position PO1 with
Part (facing part FO) between the PO3 of position is opposite with the outer peripheral surface of needle 16 always.As shown in figure 16, in expansion valve 10
In, the facing part FO in throttle orifice 22 is formed with cricoid slot 24 along inner peripheral surface.
Slot 24 and through hole 18 are same, not as the access for energetically sending out refrigerant from valve chamber 14, but conduct
It is formed for discharging the access of the static pressure of refrigerant.In addition, for structure in addition to this, due to it is shown in Fig. 2 swollen
Swollen valve is identical, therefore marks identical appended drawing reference to same parts, does not repeat its explanation other than necessary situation.
In above-mentioned expansion valve 10, when refrigerant flows through the gap of needle 16 and throttle orifice 22, in slot 24, it is not easy
It is influenced by the flowing.As a result, as shown in figure 17, the gap that pressure (static pressure) is high from static pressure along cricoid slot 24 can be made
Narrow position discharges (reference arrow) to the position of the low relief width of static pressure.As a result, self-excited vibration is suppressed, can reduce
Refrigerant sound.
(variation)
In the expansion valve of first variation, multiple slots are formed in throttle orifice.As shown in figure 18, in throttle orifice 22,
In the facing part FO of the throttle orifice 22 opposite with needle 16 (referring to Fig. 3 and Fig. 4), cricoid slot is formed with along inner peripheral surface
24a and slot 24b.Slot 24a and slot 24b is formed in the different position of axial direction (short transverse position) of throttle orifice 22.That is, here,
Slot 24a is formed in the position higher than slot 24b.In addition, slot 24a, 24b and through hole 18 are same, not as by refrigerant from valve
The access that room 14 is energetically sent out, but formed as the access of the static pressure for discharging refrigerant.
By keeping the height (position) of slot 24a different from height (position) of slot 24b, thus even if needle 16 relative to
In the case where the change in location of throttle orifice, the pressure at the narrow position in gap also can be efficiently discharged into the position of relief width.
In addition, being formed as cyclic annular along the inner peripheral surface of throttle orifice 22 by slot 24a, 24b, become two dimension vibration so as to be reliably suppressed
The self-excited vibration of dynamic needle.
It, can also be relative to axis (or the needle with throttle orifice in addition, the slot as the inner peripheral surface for being formed in throttle orifice
Central axis AC) the substantially orthogonal inclined mode of plane forms (not shown).
In addition, though illustrate with the cricoid slot that is formed throughout the complete cycle of the inner peripheral surface of throttle orifice 22, but as slot,
Such as it can also be formed along a part of the circumferential surfaces such as the half cycle of inner peripheral surface.
In addition, the needle of structure (through hole and slot) and throttle orifice to(for) the expansion valve illustrated in various embodiments
Structure (slot), can according to need and carry out various combinations.
Embodiment of disclosure is to illustrate, and it's not limited to that.The present invention is not above explained range, but
It is indicated by claims, it is intended that including being had altered in the meaning and range that are equal with claims.
Industrial applicibility
The present invention is effectively used for constituting the expansion valve of throttle using needle and throttle orifice.
Description of symbols
1 refrigerating circulatory device；2 air-conditioning devices；4 compressors；6 condensers；8 evaporators；10 expansion valves；11 throttles；12
Valve body；14 valve chambers；16 needles；18,18a, 18b through hole；20,20a, 20b slot；22 throttle orifices；24,24a, 24b slot；26 connect
Through-hole；30 first pipings；32 second pipings；The position PN1, PN2, PO1, PO2；The position of WA wide；NA narrow position；FN, FO phase
To part；AC central axis.
Claims (10)
1. a kind of expansion valve, wherein include
Valve body, the valve body include valve chamber and the throttle orifice that is connected to the valve chamber；And
Needle, the needle are inserted through the throttle orifice, toward double action between minimum first position and the highest second position
Make,
When the needle carries out reciprocating action between the first position and the second position, with the throttle orifice
The part of the opposite needle of inner peripheral surface, is formed with the through hole for penetrating through the part of the needle.
2. expansion valve according to claim 1, wherein
The through hole is formed in a manner of through the central axis of the needle.
3. expansion valve according to claim 1, wherein
The through hole is formed as multiple through holes including the first through hole and the second through hole.
4. expansion valve according to claim 3, wherein
First through hole and second through hole are formed in crossing manner.
5. expansion valve according to claim 3, wherein
First through hole and second through hole mode shape different with the position in the direction of the central axis of the needle
At.
6. a kind of expansion valve, wherein include
Valve body, the valve body include valve chamber and the throttle orifice that is connected to the valve chamber；And
Needle, the needle are inserted through the throttle orifice, toward double action between minimum first position and the highest second position
Make,
When the needle carries out reciprocating action between the first position and the second position, with the throttle orifice
The outer circumferential surface section of the opposite needle of inner peripheral surface and the inner circumferential face of the throttle orifice opposite with the outer peripheral surface of the needle
At least one party week face, be formed with slot along all faces.
7. expansion valve according to claim 6, wherein
The slot is formed as cyclic annular in a manner of connecting by the complete cycle throughout the week face.
8. expansion valve according to claim 6, wherein
The slot is formed throughout all facial half cycles.
9. expansion valve according to claim 6, wherein
The slot is formed with multiple.
10. a kind of refrigerating circulatory device, wherein
Has expansion valve according to any one of claims 1 to 9.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2016/068814 WO2017221402A1 (en) | 2016-06-24 | 2016-06-24 | Expansion valve and refrigeration cycle device with same |
Publications (2)
| Publication Number | Publication Date |
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| CN109312970A true CN109312970A (en) | 2019-02-05 |
| CN109312970B CN109312970B (en) | 2021-06-04 |
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| CN201680085852.2A Active CN109312970B (en) | 2016-06-24 | 2016-06-24 | Expansion valve and refrigeration cycle device provided with same |
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| Country | Link |
|---|---|
| JP (1) | JP6639667B2 (en) |
| CN (1) | CN109312970B (en) |
| WO (1) | WO2017221402A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112303967A (en) * | 2019-07-26 | 2021-02-02 | 株式会社鹭宫制作所 | Expansion valve and refrigeration cycle system |
| CN113048248A (en) * | 2020-08-12 | 2021-06-29 | 深圳市亨瑞达制冷设备有限公司 | Industrial water cooling type water chiller equipment |
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|---|---|---|---|---|
| JP2006266663A (en) * | 2005-02-25 | 2006-10-05 | Mitsubishi Heavy Ind Ltd | Expansion valve and air conditioner |
| CN1914466A (en) * | 2004-02-10 | 2007-02-14 | 大金工业株式会社 | Expansion valve of refrigerating apparatus |
| CN101107485A (en) * | 2005-02-28 | 2008-01-16 | 大金工业株式会社 | Expansion valve and refrigeration device |
| JP2009287769A (en) * | 2008-05-28 | 2009-12-10 | Korea Inst Of Mach & Materials | Low noise type electronic expansion valve with built-in disc bellows |
| US20140223944A1 (en) * | 2011-09-26 | 2014-08-14 | Danfoss A/S | Flow control valve with pressure balancing |
| JP2015143543A (en) * | 2014-01-31 | 2015-08-06 | 株式会社鷺宮製作所 | control valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5261541U (en) * | 1975-11-01 | 1977-05-06 | ||
| JPS5934073A (en) * | 1982-08-18 | 1984-02-24 | Yamatake Honeywell Co Ltd | Control valve |
-
2016
- 2016-06-24 JP JP2018523252A patent/JP6639667B2/en active Active
- 2016-06-24 WO PCT/JP2016/068814 patent/WO2017221402A1/en active Application Filing
- 2016-06-24 CN CN201680085852.2A patent/CN109312970B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1914466A (en) * | 2004-02-10 | 2007-02-14 | 大金工业株式会社 | Expansion valve of refrigerating apparatus |
| JP2006266663A (en) * | 2005-02-25 | 2006-10-05 | Mitsubishi Heavy Ind Ltd | Expansion valve and air conditioner |
| CN101107485A (en) * | 2005-02-28 | 2008-01-16 | 大金工业株式会社 | Expansion valve and refrigeration device |
| JP2009287769A (en) * | 2008-05-28 | 2009-12-10 | Korea Inst Of Mach & Materials | Low noise type electronic expansion valve with built-in disc bellows |
| US20140223944A1 (en) * | 2011-09-26 | 2014-08-14 | Danfoss A/S | Flow control valve with pressure balancing |
| JP2015143543A (en) * | 2014-01-31 | 2015-08-06 | 株式会社鷺宮製作所 | control valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112303967A (en) * | 2019-07-26 | 2021-02-02 | 株式会社鹭宫制作所 | Expansion valve and refrigeration cycle system |
| CN113048248A (en) * | 2020-08-12 | 2021-06-29 | 深圳市亨瑞达制冷设备有限公司 | Industrial water cooling type water chiller equipment |
| CN113048248B (en) * | 2020-08-12 | 2022-06-28 | 深圳市亨瑞达制冷设备有限公司 | Industrial water cold type cold water machine equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109312970B (en) | 2021-06-04 |
| JPWO2017221402A1 (en) | 2019-01-31 |
| JP6639667B2 (en) | 2020-02-05 |
| WO2017221402A1 (en) | 2017-12-28 |
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