JP2004293797A - Throttle valve device and air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a throttle valve device suppressing the occurrence of a refrigerant friction sound when performing throttling operation, reducing noises, adapting to various conditions when performing dehumidifying operation, and dispensing with a soundproofing measure with a soundproof material and having excellent silence property. <P>SOLUTION: Filter elements 24, 25, a restriction element 26, and a filter element 27 are arranged in a passage communicating and connecting a first inlet and outlet port 12 with a second inlet and outlet port 13 in a valve close condition of a valve element 20, and an annular fluid injection flow passage 28A along an inner peripheral face of the passage is formed on the most downstream side. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a throttle valve device and an air conditioner, and more particularly to a throttle valve device and an air conditioner used as a dehumidifying throttle valve in an air conditioner having a dehumidification mode.
[0002]
[Prior art]
As an air conditioner capable of dehumidifying operation, an indoor heat exchanger is divided into two, and a throttle valve device (a dehumidifying throttle valve and a cycle dry valve) is provided between the two indoor heat exchangers and becomes a throttle valve when the valve is closed. During the dehumidifying operation, the refrigerant flows through the throttle passage of the throttle valve device which closes and acts as a throttle valve, thereby condensing the upstream indoor heat exchanger of the two divided indoor heat exchangers. The indoor heat exchanger on the downstream side is the evaporator, the indoor air is cooled and dehumidified by the indoor heat exchanger on the downstream side, and the air is heated by the indoor heat exchanger on the upstream side without lowering the air temperature. An air conditioner with a dehumidification mode capable of performing dehumidification is known (for example, see Patent Document 1).
[0003]
In the air conditioner as described above, during the dehumidifying operation, the throttle valve device for cycle drying is closed, and the refrigerant flows through a narrow throttle passage in the throttle valve device in order to obtain a throttle effect. Is disturbed. For this reason, in the indoor unit in which the throttle valve device is installed, the vibration caused by the turbulent flow propagates in the refrigerant liquid, and the condenser and the evaporator of the indoor unit act as a resonance plate, so that an unpleasant refrigerant rubbing sound (refrigerant) Passing sound) is generated. Such a phenomenon becomes more remarkable as the refrigerant circulation flow rate increases due to an increase in the number of rotations of the compressor, and becomes more remarkable as the pressure difference between before and after the throttle passage in the throttle valve device becomes larger, and the unpleasant noise level rises.
[0004]
In view of this, in the throttle passage of the throttle valve device, a porous member made of a sintered metal or the like is provided, a throttle passage is formed by a porous member, or a porous member is provided before and after the throttle passage, It has already been proposed that the refrigerant flows through the porous member to obtain a rectifying effect and reduce the friction noise of the refrigerant (for example, see Patent Documents 2, 3, and 4).
[0005]
[Patent Document 1]
JP-A-11-51514
[Patent Document 2]
JP 2000-346495A
[Patent Document 3]
JP 2002-310540 A
[Patent Document 4]
JP-A-2002-323273
[0006]
[Problems to be solved by the invention]
By the way, with the throttle action of the throttle valve device, the indoor heat exchanger on the upstream side and the indoor heat exchanger on the downstream side acting as a condenser and an evaporator do not change the room temperature during the dehumidifying operation. Even when dehumidifying, the amount of refrigerant condensed and evaporated in each indoor heat exchanger varies depending on the conditions of the dehumidifying operation and the like.
[0007]
Therefore, in the dehumidifying operation conditions in which the refrigerant is considerably condensed and evaporated in each of the indoor heat exchangers, the amount of the condensed liquid of the refrigerant flowing into the throttle valve device is large, the gas content is small, and the throttling is performed. The pressure difference before and after the element (orifice) increases. For this reason, in the conventional throttle valve device in which the porous material is disposed before and after the throttle element to obtain a rectifying effect and reduce the friction noise of the refrigerant, a sufficient rectifying effect can be obtained by the porous member. And it is difficult to sufficiently reduce the rubbing noise of the refrigerant such as chili, churchur and shah.
[0008]
As described above, in the conventional throttle valve device, it is not possible to obtain sufficient noise reduction in conformity with various dehumidifying operation conditions, and in practice, a sound insulating material is wound around the body of the throttle valve device, At present, the pipes of the apparatus are treated with a vibration-proof rubber to absorb vibration noise. For this reason, there is a demand for reducing the rubbing noise generated by the throttle valve device as much as possible.
[0009]
The present invention has been made in order to solve the above-described problems, and reduces the occurrence of refrigerant rubbing noise during the throttling operation, can reduce noise in conformity with various dehumidifying operation conditions, and uses a sound insulating material or the like. It is an object of the present invention to provide a throttle valve device that does not require soundproofing and is excellent in quietness, and an air conditioner using the throttle valve device.
[0010]
[Means for Solving the Problems]
To achieve the above object, a throttle valve device according to the present invention includes a first inlet / outlet port, a second inlet / outlet port, a valve chamber constantly communicating with the first inlet / outlet port, and the valve chamber. A throttle valve device comprising: a valve housing defining a valve port provided between the valve chamber and the second inlet / outlet port; and a valve body provided in the valve chamber and opening and closing the valve port. In the valve closed state, a passage is formed for communicating and connecting the first inlet / outlet port and the second inlet / outlet port, and a filter element and a throttle element are arranged in the passage. A dispersion ejection channel for dispersing and ejecting the fluid passing through the passage is formed.
[0011]
In the throttle valve device according to the present invention, when the valve is in the closed state, the fluid (gas-liquid mixed fluid) passes through the filter element and the throttle element, and the fluid passes through the throttle element, thereby obtaining the throttle effect (adiabatic expansion effect). As a result, the fluid passes through the filter element, so that the effect of reducing the size of gas particles in the liquid (the effect of preventing enlargement) and the effect of reducing the turbulence (the effect of rectifying) are obtained. Finally, the fluid is ejected from the dispersion ejection channel formed at the most downstream of the passage. Since the fluid ejection is performed by dispersing the fluid passing through the passage in a dispersed ejection channel, the collision between the fluids ejected from the dispersed ejection channel is reduced. Due to these, noise generation during the diaphragm operation is reduced, and noise reduction is improved.
[0012]
In the throttle valve device according to the present invention, as a detailed structure, the dispersion ejection flow path can be formed as an annular fluid ejection flow path along the inner peripheral surface of the passage. In this case, the fluid that has passed through the passage is finally ejected from an annular fluid ejection passage along the inner peripheral surface of the passage. Since the fluid ejection is performed in an annular shape along the inner peripheral surface of the passage, collision of the fluids ejected from the fluid ejection channel is reduced. Due to these, noise generation during the diaphragm operation is reduced, and noise reduction is improved.
[0013]
In a throttle valve device according to the present invention, as a detailed structure, the passage has a circular cross-sectional shape, and a columnar member having an outer diameter smaller than the inner diameter of the passage is arranged concentrically with the passage at the most downstream side of the passage. The fluid ejection flow path is formed in an annular shape between the inner peripheral surface of the cylindrical member and the outer peripheral surface of the columnar member, or the passage has a circular cross-sectional shape, and a serration shape is provided at the most downstream of the passage. The fluid ejection flow path is formed in a form in which a serration member having an outer peripheral surface is concentrically arranged in the passage, and is dispersed in a large number in an annular arrangement between an inner peripheral surface of the passage and an outer peripheral surface of the serration member. It can be a structure that is.
[0014]
In the case of the serration member, since the fluid ejection flow passages are dispersed in a large number in an annular arrangement along the inner peripheral surface of the passage, a dispersion effect of the ejected fluid is also obtained, and the fluids ejected from the fluid ejection passages are separated from each other. Further, collision does not occur, and the noise reduction effect is improved.
[0015]
As the serration member, an inexpensive member whose outer peripheral surface is formed into a serrated shape by knurling, which is an inexpensive manufacturing method, can be used.
[0016]
In the throttle valve device according to the present invention, as a detailed structure, the dispersion ejection flow path can be formed as a plurality of dispersion ejection holes. In this case, the fluid that has passed through the passage is finally ejected from the plurality of dispersed ejection holes. Since the fluid ejection is performed by dispersing the fluid into the plurality of dispersed ejection holes, collision between the fluids ejected from the dispersed ejection holes is reduced. Due to these, noise generation during the diaphragm operation is reduced, and noise reduction is improved.
[0017]
Further, in the throttle valve device according to the present invention, the throttle element can be constituted by an orifice member having a single orifice hole at the center, and the filter element is a sintered multilayer wire mesh, a porous sintered metal, It can be made of a foamed metal or a porous body such as a porous metal body, a sintered plastic porous body, etc., and can obtain a good effect of miniaturizing gas particles in liquid and a function of reducing turbulence.
[0018]
Further, in the throttle valve device according to the present invention, the filter element is disposed on each of the upstream side and the downstream side of the throttle element, and the dispersed ejection flow path is formed further downstream of the filter element downstream of the throttle element. Have been.
[0019]
In the throttle valve device according to the present invention, the filter element on the upstream side of the throttle element exclusively performs the action of miniaturizing the gas particles in the liquid (the effect of preventing enlargement), and the filter element on the downstream side of the throttle element exclusively uses the turbulence reduction. A fluid (rectifying action) is performed, and the fluid is ejected from a dispersion ejection channel that is provided at the most downstream of the passage and disperses and ejects the fluid passing through the passage, so that collision between the ejected fluids is reduced. . Due to these, noise generation during the diaphragm operation is reduced, and noise reduction is improved.
[0020]
Further, in the throttle valve device according to the present invention, further, a cylindrical filter element is mounted around an outer periphery of the valve element exposed to the valve chamber, and an outer wall surface of the filter element upstream of the throttle element has the valve element. And a plurality of radial passages formed therein communicate with the inner wall surface of the cylindrical filter element.
[0021]
According to the throttle valve device of the present invention, first, the fluid flows through the cylindrical filter element from the valve chamber side, so that contaminants such as contamination in the fluid flow are captured and the fine particles of gas in the liquid are captured. The gas-liquid mixture containing large gas particles is prevented from flowing to the throttle element. This also reduces noise.
[0022]
In addition, the air conditioner according to the present invention includes a compressor, an outdoor heat exchanger, a first indoor heat exchanger, a second indoor heat exchanger, a refrigerant passage connecting these components in a loop, and the outdoor heat exchanger. An expansion valve provided in a refrigerant passage between the exchanger and the first indoor heat exchanger, wherein an expansion valve is provided between the first indoor heat exchanger and the second indoor heat exchanger. The throttle valve device according to the invention is connected.
[0023]
ADVANTAGE OF THE INVENTION According to the air conditioner by this invention, a throttle valve apparatus performs a throttle effect | action between a 1st indoor heat exchanger and a 2nd indoor heat exchanger by closing a valve, and is excellent in quietness. It functions as a dehumidifying throttle valve.
[0024]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 to 8 show a first embodiment of a throttle valve device 10 according to the present invention.
[0025]
As shown in FIG. 1, the throttle valve device 10 has a valve housing 11 made of metal. The valve housing 11 includes a first inlet / outlet port 12, a second inlet / outlet port 13, a valve chamber 14 which is always in direct communication with the first inlet / outlet port 12, a valve chamber 14 and a second inlet / outlet port. And an outlet port 13 and a valve port 15 provided therebetween. A valve seat 16 is defined around the open end of the valve port 15 on the valve chamber 14 side. Joint pipes 17 and 18 are connected to the first inlet / outlet port 12 and the second inlet / outlet port 13, respectively.
[0026]
A valve body 20 is provided in the valve chamber 14 so as to be movable in the vertical direction (valve lift direction) in the figure. The valve body 20 is seated on a valve seat portion 16 defined around the valve port 15 at the distal end outer peripheral surface 20A, and is separated from the valve seat portion 16 to close the valve port 15 (position shown). The valve port 15 is movable between a valve opening position and a valve opening position for establishing communication with the valve port 15.
[0027]
An electromagnetic solenoid device 40 is attached to the valve housing 11. The electromagnetic solenoid device 40 is of a suction-less type, and is fitted to a cylindrical plunger tube 41 fixed to the valve housing 11 and a plunger chamber 42 defined in the plunger tube 41 so as to be movable in the axial direction. A plunger 43 in the shape of a cup, a plug member 44 fixed to the distal end of the plunger tube 41, a U-shaped outer box 46 connected to the plug member 44 by bolts 45 outside the plunger tube 41, and a plunger. It comprises an electromagnetic coil portion 47 fixed to the outer periphery of the tube 41, and a compression coil spring (valve opening spring) 48 for urging the plunger 43 toward the plug member 44 side.
[0028]
The valve chamber 14 communicates directly with the inside of the plunger tube 41 (plunger chamber 42) on the opposite side (upper side) of the valve port 15. The valve body 20 is located inside the valve chamber 14 and the plunger tube 41, and the upper stem portion 20 </ b> B is caulked to the bottom of the plunger 43. Thereby, the valve body 20 and the plunger 43 are integrally connected, and the valve body 20 moves integrally with the plunger 43 in the vertical direction (axial direction).
[0029]
The electromagnetic solenoid device 40 drives the valve body 20 upward (in the valve opening direction) together with the plunger 43 by the spring force of the compression coil spring 48 when power is not supplied to the electromagnetic coil unit 47 when power is not supplied to the electromagnetic coil unit 47. On the other hand, when the electromagnetic coil 47 is energized, the plunger 43 is magnetically attracted to the lower half 46A of the outer case 46 against the spring force of the compression coil spring 48. This drives the valve body 20 downward (to close the valve). FIG. 1 shows an energized state (valve closed state).
[0030]
That is, the electromagnetic solenoid device 40 drives the valve element 20 to the valve open position separated from the valve seat portion 16 by the spring force of the compression coil spring 48 when not energized, and resists the spring force of the compression coil spring 48 when energized. It is a normally open type that drives the valve body 20 to a valve closed position where the valve body 20 is seated on the valve seat portion 16.
[0031]
The valve body 20 is located directly above the valve port 15, and a passage is formed in the valve body 20 to connect and connect the first inlet / outlet port 12 and the second inlet / outlet port 13 when the valve is closed. This passage is provided by a hollow opening 21 opened on the front end surface (lower bottom surface) facing the valve port 15. The hollow opening 21 has a circular cross-sectional shape, is open toward the valve port 15 at the distal end surface of the valve body 20 (lower end opening 21A), and has a closed end with a closed upper end.
[0032]
A circumferential groove 22 is formed in the outer peripheral portion of the valve body 20 over a range from the axially intermediate portion to the connection end side (upper end side) with the plunger 43. The valve body 20 is formed with a plurality (six) of radial passages 23 (see FIG. 3) that communicate the upper end closed side of the hollow opening 21 and the bottom of the circumferential groove 22.
[0033]
The valve chamber 14, the first inlet / outlet port 12, and the second inlet / outlet port 13 communicate with each other in the valve closed state by the circumferential groove 22, the radial passage 23, and the hollow opening 21.
[0034]
A cylindrical filter element 24 is fitted in the circumferential groove 22. The cylindrical filter element 24 is made of a porous material having a transmission accuracy of about 100 μm, and is located at the most upstream position of a fluid flow (gas-liquid mixed fluid) flowing from the first inlet / outlet port 12 to the second inlet / outlet port 13. Thus, trapping of contaminants in the fluid flow and fragmentation of gas particles in the gas-liquid mixed fluid are performed. Even if the cylindrical filter element 24 is somewhat clogged, it is required that the pressure loss in the filter does not become larger than the pressure loss due to the orifice member 26 described later.
[0035]
Examples of the porous body constituting the cylindrical filter element 24 include a porous sintered metal having a continuous pore structure made of stainless steel, brass, or the like (for example, a sintered metal element manufactured by SMC Corporation), nickel, nickel-copper alloy 3D mesh-like foamed metal or metal porous body (for example, Celmet, trade name, manufactured by Sumitomo Electric Industries, Ltd.), plastic sintered porous body having a continuous pore structure formed by sintering plastic powder as a raw material (For example, a sintered plastic porous body manufactured by Someya Seisakusho), a long-life type porous body and the like, such as a sintered multi-layered metal mesh formed by stacking and sintering several metal meshes made of stainless steel or the like. The foamed metal and the porous metal body described here are obtained by subjecting a three-dimensional mesh-shaped foamed resin to a conductive treatment and electroplating nickel, a nickel-copper alloy or the like.
[0036]
2, a disc-shaped upstream filter element 25, an orifice member 26, a disc-shaped downstream filter element 27, and a serration member 28 are sequentially arranged in the hollow opening 21 from the lower end opening 21A. These are inserted and fixed to the valve body 20 by swaging (caulking portion 20C) via a washer 29. With this structure, the outer wall surface of the upstream filter element 25 communicates with the inner wall surface of the cylindrical filter element 24 through six radial passages 23, as is well shown in FIG.
[0037]
As shown in FIG. 4, the orifice member 26 has a single orifice hole (restriction hole) 26A at the center and performs a restricting action. When the fluid passes through the single orifice hole (throttle hole) 26A of the orifice member 26, it undergoes a throttling action and undergoes adiabatic expansion.
[0038]
As shown in FIG. 2, the upper and lower surfaces of the orifice member 26, that is, the surfaces that are in contact with the upstream filter element 25 or the downstream filter element 27, are provided on the upstream filter element 25 or the downstream filter element. There is formed a large-diameter recess defining an enlarged inlet space 26B and an enlarged outlet space 26C located between the hole 27 and the single orifice hole 26A. The enlarged inlet space 26B secures an orifice flow from the upstream filter element 25 to the single orifice hole 26A, and the enlarged outlet space 26C secures an orifice flow from the single orifice hole 26A to the downstream filter element 27.
[0039]
The upstream filter element 25 and the downstream filter element 27 are both formed of a porous body, and are disposed concentrically with the hollow opening 21 as well shown in FIGS. 3 and 5. In addition, the upstream filter element 25 exclusively performs the action of miniaturizing gas particles in liquid (prevention of enlargement), and the downstream filter element 27 exclusively performs the turbulence mitigation action (rectification action).
[0040]
As the porous body constituting the upstream filter element 25 and the downstream filter element 27, a porous sintered metal having a continuous pore structure made of stainless steel, brass, or the like (for example, a sintered metal element manufactured by SMC Corporation). , Nickel, nickel-copper alloy, a three-dimensional mesh-like foamed metal or metal porous body (for example, Celmet manufactured by Sumitomo Electric Industries, Ltd.), and a continuous pore structure formed by sintering a plastic powder as a raw material. There are long-life type porous bodies such as a plastic sintered porous body (for example, a plastic sintered porous body manufactured by Someya Seisakusho), a sintered multilayer wire mesh obtained by stacking and sintering several metal meshes made of stainless steel or the like. .
[0041]
The serration member 28 is located at the most downstream position of the fluid flow (gas-liquid mixed fluid) flowing from the first inlet / outlet port 12 to the second inlet / outlet port 13. As shown in FIG. 6, the serration member 28 has an outer peripheral surface formed into a serrated shape by flat knurling, and as shown in FIG. In between, each serration valley defines a fluid ejection channel 28A. The fluid ejection flow path 28A is arranged in an annular shape along the inner peripheral surface of the hollow opening 21 like a ring shower nozzle. According to the knurling, the manufacturing cost is easy and the parts cost is low.
[0042]
As shown in FIG. 7, the washer 29 is concentrically arranged in the hollow opening 21 by a leg piece 29A, and has a shape that does not obstruct the passage of the fluid ejection flow passage 28A as much as possible. I have.
[0043]
Next, the operation of the throttle valve device 10 having the above configuration will be described.
When power is not supplied to the electromagnetic solenoid device 40, the valve body 20 is lifted together with the plunger 43 by the spring force of the compression coil spring 48, the valve body 20 is separated from the valve seat 16, and the valve port 15 is completely opened. A valve-open state without substantial throttling action of the fully opened state is obtained.
[0044]
On the other hand, when the electromagnetic solenoid device 40 is energized, the plunger 43 is magnetically attracted to the side of the lower piece 46A of the outer casing 46 against the spring force of the compression coil spring 48, and the valve body 20 Is driven in the valve closing direction, and as shown in FIG. 1, the valve body 20 is seated on the valve seat portion 16 with the distal end outer peripheral surface 20A.
[0045]
In this valve closed state, a large number of fluid ejection flows by the cylindrical filter element 24, the plurality of radial passages 23, the upstream filter element 25, the single orifice hole 26A of the orifice member 26, the downstream filter element 27, and the serration member 28 The valve chamber 14 and the second inlet / outlet port 13 communicate with each other through the passage 28A.
[0046]
When the first inlet / outlet port 12 is on the high pressure side and the second inlet / outlet port 13 is on the low pressure side, the cylindrical filter element 24 → the respective radial passages 23 → the upstream filter element 25 → the orifice member 26 A fluid such as a refrigerant flows in the order of the one orifice hole 26A and the downstream filter element 27, and the fluid is ejected from each fluid ejection channel 28A by the serration member 28 toward the second inlet / outlet port 13.
[0047]
By the flow of the fluid as described above, first, contamination in the fluid flow is captured by the cylindrical filter element 24 having a large surface area, and the bubbles (gas particles) in the liquid flow are subdivided. . Then, the fluid flows through the plurality of radial passages 23 into the upstream filter element 25 in a dispersed flow, and flows through the upstream filter element 25, the single orifice hole 26A of the orifice member 26, and the downstream filter element 27. Pass in order.
[0048]
In this flow, the upstream side filter element 25 prevents the gas particles in the liquid from being fined and prevented from being enlarged, and prevents the gas-liquid mixed fluid containing the large gas particles from flowing into the single orifice hole 26A. Thereby, in the single orifice hole 26A, the gas particles flowing therethrough are prevented from splitting, and splitting noise is prevented from being generated.
[0049]
The fluid that has passed through the single orifice hole 26A of the orifice member 26 is subjected to a throttling action to generate a turbulent flow, which is alleviated by the downstream filter element 27, rectified, and silenced.
[0050]
After that, the fluid is dispersed and ejected from each of the fluid ejection channels 28A arranged in an annular shape along the inner peripheral surface of the hollow opening 21. Since this fluid ejection is performed in an annular shape along the inner peripheral surface of the hollow opening 21 and is performed in a dispersed manner, the fluid ejected from each fluid ejection channel 28A is less likely to collide with each other, Silence is achieved.
[0051]
Thereby, the noise can be reduced in conformity with various dehumidifying operation conditions, and sufficient quietness can be obtained without requiring a soundproofing treatment with a sound insulating material or the like.
[0052]
9 to 11 show a main part of a throttle valve device 10 according to a second embodiment of the present invention. 9 to 11, parts corresponding to those in FIGS. 1 to 8 are denoted by the same reference numerals as those in FIGS. 1 to 8, and description thereof is omitted.
[0053]
As shown in FIG. 9, in this embodiment, a cylindrical member 30 is arranged in the hollow opening 21 instead of the serration member 28. As shown in FIG. 10, the columnar member 30 is a columnar member having an outer diameter slightly smaller than the inner diameter of the hollow opening 21. As shown in FIG. By being caulked and coupled to the washer 29 at a concentric position, the concentric arrangement is provided within the hollow opening 21.
[0054]
Thus, an annular fluid ejection flow path 31 is formed between the inner peripheral surface of the hollow opening 21 and the outer peripheral surface of the columnar member 30.
[0055]
In this embodiment, although the ejection in a form dispersed in a plurality of routes is not performed, since the fluid is ejected from the annular fluid ejection channel 31 along the inner peripheral surface of the hollow opening 21, the hollow opening is not provided. The fluid that has passed through the single orifice hole 26A and the downstream filter element 27, the passage portions of which are gathered relatively near the center of the portion 21, then passes through the fluid ejection flow path 31 when the Disperse radially from near the center to near the periphery. Thereby, the collision between the fluids ejected from the fluid ejection channel 31 is reduced, and the noise is reduced.
[0056]
12 and 13 show a main part of a third embodiment of the throttle valve device 10 according to the present invention. In FIGS. 12 and 13, parts corresponding to those in FIGS. 1 to 8 are given the same reference numerals as those in FIGS.
[0057]
As shown in FIG. 12, in this embodiment, the serration member 28 is omitted, and the lower end opening 21A of the hollow opening 21 is closed by swaging the washer 29 to prevent the downstream filter element 27 from dropping off. A plurality (six) of the dispersed ejection holes 29B (see FIG. 13) penetrate the portion deviated from the center of the washer 29, and the dispersed ejection holes 29B constitute a dispersed ejection flow path.
[0058]
In this embodiment, as in the case of the first embodiment, the fluid is ejected by dispersing the fluid into a plurality of routes, so that the fluid ejected from each of the dispersed ejection holes 29B is less likely to collide with each other, and noise is reduced. Can be
[0059]
FIG. 14 shows an air conditioner in which the throttle valve device 10 according to Embodiments 1 to 3 is incorporated as a cycle dry valve.
[0060]
This air conditioner includes a compressor 50, an outdoor heat exchanger 51, a first indoor heat exchanger 52, a second indoor heat exchanger 53, and refrigerant passages 55 to 63 for loop-connecting these. An expansion valve 54 provided in a refrigerant passage (57-59) between the outdoor heat exchanger 51 and the first indoor heat exchanger 52, and a refrigerant loop-connected for switching between a cooling mode and a heating mode A four-way valve 65 for reversing the flow direction of the refrigerant in the passages 55 to 63.
[0061]
A throttle valve device (cycle dry valve) 10 is connected to the refrigerant passage 60 between the first indoor heat exchanger 52 and the second indoor heat exchanger 53.
[0062]
In the cooling mode, the refrigerant circulates in the direction indicated by the solid line arrow in FIG. 14, and the cooling mode is obtained in a state where the throttle valve device 10 is open, and the throttle valve device 10 is closed. In this state, the throttle valve device 10 functions as a throttle valve, and a cooling cycle dry mode (dehumidification during cooling) is obtained.
[0063]
Although the throttle valve device 10 is provided in the indoor unit of the air conditioner, as described above, the throttle valve device 10 includes a plurality of filter elements and a plurality of throttle elements that are alternately arranged in two stages. It is excellent in quietness, and does not generate harsh coolant rubbing noise or noise due to intermittent expansion and rupture of gas particles immediately after passing through the orifice in the cooling cycle dry mode.
[0064]
In the heating mode, the refrigerant circulates in a direction opposite to the direction indicated by the arrow in FIG.
[0065]
【The invention's effect】
As can be understood from the above description, according to the throttle valve device of the present invention, the fluid (gas-liquid mixed fluid) passes through the filter element and the throttle element, and the fluid passes through the throttle element, thereby providing the throttle effect (insulation). Expansion effect) is obtained, and the fluid passes through the filter element, so that the effect of reducing the size of gas particles in the liquid (prevention of enlargement) and the effect of reducing turbulence (rectification) are obtained. By dispersing and ejecting the fluid from the dispersion ejection channel formed downstream, which disperses and ejects the fluid passing through the passage, collision of the fluid ejected from the dispersion ejection channel is reduced. Accordingly, noise generation during the throttle operation is reduced, noise can be reduced in conformity with various dehumidifying operation conditions, and sufficient quietness can be obtained without requiring soundproofing treatment with a sound insulating material or the like.
[Brief description of the drawings]
FIG. 1 is a sectional view showing Embodiment 1 of a throttle valve device according to the present invention.
FIG. 2 is an enlarged sectional view of a main part of the throttle valve device of the first embodiment.
FIG. 3 is a sectional view taken along line AA of FIGS. 2 and 9;
FIG. 4 is a sectional view taken along line BB of FIGS. 2 and 9;
FIG. 5 is a sectional view taken along the line CC of FIGS. 2 and 9;
FIG. 6 is a sectional view taken along line DD of FIG. 2;
FIG. 7 is a sectional view taken along the line EE of FIG. 2;
FIG. 8 is a perspective view of a serration member used in the throttle valve device according to the present invention.
FIG. 9 is an enlarged sectional view showing a main part of a throttle valve device according to a second embodiment of the present invention.
FIG. 10 is a sectional view taken along line FF of FIG. 9;
FIG. 11 is a sectional view taken along line GG of FIG. 9;
FIG. 12 is an enlarged sectional view showing a main part of a throttle valve device according to a third embodiment of the present invention.
FIG. 13 is a sectional view taken along line HH of FIG.
FIG. 14 is a block diagram showing an air conditioner incorporating the throttle valve device according to the present invention.
[Explanation of symbols]
10 Throttle valve device
11 Valve housing
12 First entrance / exit port
13 Second entrance / exit port
14 Valve room
15 Valve port
16 Valve seat
20 valve body
21 Hollow opening
24 Cylindrical filter element
25 Upstream filter element
26 Orifice member
27 Downstream filter element
28 Serration material
28A Fluid ejection channel
30 cylindrical member
31 Fluid ejection channel
40 Electromagnetic solenoid device
43 plunger
47 Electromagnetic coil
50 compressor
51 Outdoor heat exchanger
52 First indoor heat exchanger
53 Second indoor heat exchanger
54 expansion valve
65 Four-way valve

Claims (11)

A first inlet / outlet port, a second inlet / outlet port, a valve chamber constantly communicating with the first inlet / outlet port, a valve port provided between the valve chamber and the second inlet / outlet port And a throttle valve device having a valve body provided in the valve chamber and opening and closing the valve port.
A passage is formed in the valve body for communicating and connecting the first inlet / outlet port and the second inlet / outlet port in a valve closed state, and a filter element and a throttle element are arranged in the passage, and a most downstream portion of the passage is provided. A throttle valve device in which a dispersion ejection channel for dispersing and ejecting a fluid passing through the passage is formed. The throttle valve device according to claim 1, wherein the dispersion ejection flow path is formed as an annular fluid ejection flow path along an inner peripheral surface of the passage. The passage has a circular cross-sectional shape, and a columnar member having an outer diameter smaller than the inner diameter of the passage is arranged concentrically with the passage at the most downstream side of the passage, and an inner peripheral surface of the passage and an outer peripheral surface of the columnar member The throttle valve device according to claim 2, wherein the fluid ejection flow path is formed in an annular shape between the throttle valve and the fluid ejection path. The passage has a circular cross-sectional shape, and a serration member having a serration-shaped outer peripheral surface is disposed concentrically with the passage at the most downstream side of the passage, between the inner peripheral surface of the passage and the outer peripheral surface of the serration member. 3. The throttle valve device according to claim 2, wherein the fluid ejection flow path is formed in a form of a large number of dispersion in an annular arrangement. The throttle valve device according to claim 4, wherein the serration member is formed in a serrated shape by knurling the outer peripheral surface. The throttle valve device according to claim 1, wherein the dispersion ejection channel is formed as a plurality of dispersion ejection holes. The throttle valve device according to any one of claims 1 to 6, wherein the throttle element is constituted by an orifice member having a single orifice hole at a central portion. The throttle valve device according to any one of claims 1 to 7, wherein the filter element is formed of a porous body. 9. The filter element according to claim 1, wherein the filter element is arranged on an upstream side and a downstream side of the throttle element, respectively, and the dispersion ejection flow path is formed further downstream than the filter element downstream of the throttle element. The throttle valve device according to claim 1. A cylindrical filter element is mounted around the outside of the valve body exposed to the valve chamber, and the outer wall surface of the filter element upstream of the throttle element is formed by a plurality of radial passages formed in the valve body. The throttle valve device according to any one of claims 1 to 9, wherein the throttle valve device communicates with an inner wall surface of the cylindrical filter element. A compressor, an outdoor heat exchanger, a first indoor heat exchanger, a second indoor heat exchanger, a refrigerant passage connecting them in a loop, the outdoor heat exchanger and the first indoor heat exchange 11. An expansion valve provided in a refrigerant passage between the first indoor heat exchanger and the second indoor heat exchanger. An air conditioner to which the throttle valve device according to the above is connected.

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