CN101446461B - Throttle pipe of household air conditioner - Google Patents
Throttle pipe of household air conditioner Download PDFInfo
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- CN101446461B CN101446461B CN200810122368XA CN200810122368A CN101446461B CN 101446461 B CN101446461 B CN 101446461B CN 200810122368X A CN200810122368X A CN 200810122368XA CN 200810122368 A CN200810122368 A CN 200810122368A CN 101446461 B CN101446461 B CN 101446461B
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Abstract
The invention relates to a throttle pipe of a household air conditioner, comprising a valve body, a static valve core, movable valve cores; the static valve core is provided with a capillary channel penetrating through the axial centre thereof and at least two axially penetrated overflow channels distributed on the periphery of the capillary channel; the throttle pipe is characterized in that thestatic valve core is only one, the movable valve cores comprise a first movable valve core and a second movable valve core which are positioned at the two sides of the static valve core, wherein, thefirst movable valve core and the second movable valve core are both only provided with a capillary hole penetrating through the axial centre thereof; the throttle pipe also comprises a first blockingpiece and a second blocking piece; the two blocking pieces are respectively arranged at two ends inside the valve body; the first movable valve core is positioned between the first blocking piece andthe static valve core, and the second movable valve core is positioned between the second blocking piece and the static valve core. By utilizing the two movable valve cores, the throttle pipe has twoprocesses of dynamic throttling during the working process, thus leading to good throttling effect; the refrigerant directly flows through a coolant channel of the blocking piece after axially passing through the overflow and the capillary holes, thus simplifying the flow passage route of the movable valve core.
Description
Technical field
The invention belongs to the technical field of air-conditioning, relate in particular to a kind of throttle pipe of household air conditioner.
Background technology
Throttle structure in the small-type refrigeration appliances such as existing domestic air conditioning generally adopts choke valve or throttle block structure, as a patent No. is that the Chinese utility model patent " choke valve " of ZL97236534.6 (notification number is CN2295085Y) has disclosed a kind of choke valve, it is characterized in that: be fixed with two relative valve A and valve B in the housing, a: valve A comprises that an end is fixed with the valve body of pad, the valve body middle part has through hole, its large aperture part has a spool, the spool middle part has spray orifice, and an end of importing and exporting relatively on valve body is connected with filter screen; B: valve B comprises that an end is fixed with the valve body of pad, and the valve body middle part has through hole, and its large aperture part has a spool, and the spool middle part has spray orifice, and an end of importing and exporting relatively on valve body is connected with filter screen.
Be a kind of choke valve the Chinese utility model patent " bi-directional secondary choke valve " of ZL200720107950.X (notification number is CN201027999Y) has disclosed also as a patent No., comprise valve body, an end sealing and fixing has valve seat in the valve body, valve seat comprises valve opening and slideway, be provided with movable spool in the slideway, have axial aperture on the spool, valve seat is provided with several through flow holes, other end sealing and fixing has fixed spool in the described valve body, and fixed spool has axial aperture.
The structure more complicated of valve inner in above-mentioned two choke valves, the cost height, but also be provided with filter screen, so restriction effect is relatively poor.
As improvement, it is that the Chinese utility model patent " throttling arrangement of the throttling of a kind of orifice plate type, shunting " of ZL03247899.2 (notification number is CN2639808Y) has disclosed a kind of throttling arrangement that a patent No. is arranged, and it comprises shell, main aperture plate, auxilliary orifice plate, plate washer.The main aperture plate is fixed on shell one end, and plate washer is fixed on the other end of shell, and auxilliary orifice plate is loaded in the shell and places between main aperture plate and the plate washer, and auxilliary orifice plate can change mobile with two ends fluid pressure difference in the shell.When auxilliary orifice plate moved to main aperture plate one end, fluid must pass through two orifice plate central small hole throttlings; When auxilliary orifice plate moved to plate washer one end, fluid was only by the throttling of main aperture plate central small hole.
The structure of this throttling arrangement is succinct relatively, and filter structure is not set, the corresponding raising of restriction effect.The fluid passage of the auxilliary orifice plate in this throttling arrangement (being equivalent to motion block or movable valve plug) outer ring is the fluid main channel, for making fluid by this fluid main channel flow through fluid through-hole on the baffle plate, it need cut out a formation at the placement section rear portion has a path of upwards flowing for the fluid by the fluid passage, therefore is somebody's turn to do the structure more complicated of auxilliary orifice plate; There being this auxilliary orifice plate (being equivalent to motion block or movable valve plug) to have only one, can only carry out a throttling, be unfavorable for the throttling intensity of required coupling when satisfying the domestic air conditioning refrigeration and heating, therefore the restriction effect of existing various throttle pipes also can be further improved.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of throttle pipe of household air conditioner with twice dynamic throttling process at above-mentioned prior art present situation, and the structure of movable valve plug is simple relatively, movable valve plug when throttling and during normal condition changes in flow rate big, so this air-conditioning throttle pipe can the whole restriction effect that improves on air-conditioning.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of throttle pipe of household air conditioner, include tubular valve body, be provided with the quiet spool that is provided with this valve body relative fixed in the valve body, and the movable valve plug of valve body axial slip relatively, described quiet spool has one to be run through the capillary porosity duct in its axle center and is distributed in the spout hole passage that this at least two on capillary porosity duct periphery axially runs through, it is characterized in that: described quiet spool has only one, described movable valve plug has two, be positioned at the both sides of quiet spool, be respectively first movable valve plug and second movable valve plug, wherein, first movable valve plug only have one run through its axle center pore, second movable valve plug only have one run through its axle center pore, this throttle pipe also comprises first block piece and second block piece with the passage that passes through for cold-producing medium, these two block pieces be separately positioned in the valve body two ends and with the setting of valve body relative fixed, described first movable valve plug is between first block piece and quiet spool, and described second movable valve plug is between second block piece and quiet spool.
Above-mentioned quiet spool is made up of at least two quiet spool monomers, and adjacent two quiet spool monomers fit tightly and form complete quiet spool.Above-mentioned quiet spool is made up of at least two quiet spool monomers, and adjacent two quiet spool monomers are provided with at interval.Be provided with back-up ring between the described adjacent two quiet spool monomers.
Quiet spool adopts at least two monomers to be spliced, so the axial length of each monomer is short relatively, the processing capillary porosity duct is simple relatively on this monomer, also have through experiment and learn, be spliced when quiet spool adopts two or more monomers, can change the restriction effect of throttle pipe, promptly to compare restriction effect different for the quiet spool of its monoblock type with same axial length, make the adaptability of this throttle pipe stronger, the restriction effect of conveniently adjusted throttle pipe.
State on the right side of first movable valve plug and have the right cavity of a bore greater than the pore diameter on first movable valve plug, described pore is connected with right cavity; Have the left cavity of a bore greater than the pore diameter on second movable valve plug on the left side of described second movable valve plug, described pore is connected with left cavity.
Contact when cooperating with the left side of quiet spool in the first movable valve plug right side, form cavity between the left side of described right cavity and quiet spool, capillary porosity duct on the quiet spool communicates with described cavity simultaneously, like this, when cold-producing medium when the left end of throttle pipe flows into, cold-producing medium enters in the bigger cavity in space after by pore, cold-producing medium has a process that expands and amplify, guarantee flow of refrigerant speed, the experiment proved that, when having a suitable expansion amplification process can guarantee this throttle pipe restriction effect preferably through the cold-producing medium behind the pore.Otherwise, in like manner.The curved cavity that also have to increase makes when cold-producing medium enters from the capillary porosity duct of quiet spool and has an effect that expands and amplify the cavity, produces the power of bigger promotion movable valve plug, movable valve plug working sensitivity height.
General air-conditioning throttle pipe, described quiet spool directly and valve interior wall fix.Because the outer peripheral face and the valve body inner peripheral surface of quiet spool are smooth structure, therefore, be fixed together to good in mode between above-mentioned quiet spool outer peripheral face and the valve interior wall by extruding, the mode of extruding has the simple advantage in location.Bigger because of quiet spool wall thickness again, and the valve body tube wall is thinner, still can on left and right quiet spool outer peripheral face, be provided with one or more cannelure respectively in advance, again in the outside application of force of valve body, the valve interior wall extruding is snapped onto in the described cannelure, can make valve body and left and right quiet spool strong bonded like this.
Each above-mentioned block piece is back-up ring.The effect of back-up ring is equivalent to quiet spool, and pore under back-up ring and movable valve plug state of contact on the movable valve plug and spout hole all communicate with the passage at back-up ring middle part.Owing to adopt the outer peripheral face and the valve body inner peripheral surface of the block piece of back-up ring to be shiny surface, therefore, be fixed together to good in mode between above-mentioned back-up ring outer peripheral face and the valve interior wall by extruding, the mode of extruding has the simple advantage in location.Specifically can adopt following fashion of extrusion, on each block piece outer peripheral face, be provided with one or more cannelure respectively in advance,, the inwall of described valve body be snapped in the described cannelure by extruding, can make valve body and back-up ring strong bonded so again in the outside application of force of valve body.
Each above-mentioned block piece is the bulge loop that forms convex on valve interior wall.Can simplify the structure of block piece as block piece with bulge loop.
Each above-mentioned block piece is and plugs and the tube connector of solid welding in valve body.Because throttle pipe will link to each other with tube connector in use certainly, thus can adopt tube connector to replace block piece, further simplified structure.
Because to the certain requirement of being mounted with of tube connector, be the inner face of tube connector and the axial length that the spacing between the quiet spool is greater than movable valve plug, movable valve plug just can relatively move like this, but the spacing between the inner face of tube connector and the quiet spool can not be too big, for tube connector is in place, above-mentioned valve body two ends are by being squeezed in the stopper of inwall formation convex, and each stopper contacts with the inner face of corresponding block piece.Insert tube connector when installing like this, when the inner face of tube connector touches stopper, just know to be in place, tube connector and valve body are welded together get final product the installation accuracy of raising tube connector then.
Also be provided with a bushing pipe between above-mentioned quiet spool and movable valve plug and the valve interior wall, be provided with one or more cannelure respectively in advance on the described quiet spool outer peripheral face, mode by extruding between described bushing pipe outer peripheral face and the valve interior wall is fixed together, simultaneously, described bushing pipe extruding snaps onto in the described cannelure.Increasing the bushing pipe structure can make the installation location of quiet spool and movable valve plug simple and accurate, because the length of bushing pipe is shorter than the length of valve body, quiet spool of easier installation and movable valve plug, bushing pipe also can play indicative function to the installation of first and second block piece simultaneously, is convenient to assemble first and second block piece.
In like manner, the throttle pipe behind the increase bushing pipe, the block piece in it also can be back-up ring or bulge loop or tube connector.
Compared with prior art, the invention has the advantages that: owing to adopted two movable valve plug structures, so throttle pipe has the process of twice dynamic throttling, good throttle effect in the course of the work; The flow channel that movable valve plug is arranged again is the pore that runs through the axle center, so cold-producing medium need as original auxilliary orifice plate need not could be by the runner of block piece by upwards flowing behind the outer ring runner of auxilliary orifice plate again, but axially flow through by coolant channel direct behind spout hole and the pore and block piece, simplify the flow passage route of movable valve plug.
Description of drawings
Fig. 1 is the structure cutaway view of the 1st embodiment of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to cutaway view;
Fig. 3 is the structure cutaway view of the 2nd embodiment of the present invention;
Fig. 4 is the structure cutaway view of the 3rd embodiment of the present invention;
Fig. 5 is the structure cutaway view of the 4th embodiment of the present invention;
Fig. 6 is the structure cutaway view of the 5th embodiment of the present invention;
Fig. 7 is the structure cutaway view of the 6th embodiment of the present invention;
Fig. 8 is the structure cutaway view of the 7th embodiment of the present invention;
Fig. 9 is the structure cutaway view of the 8th embodiment of the present invention;
Figure 10 is the structure cutaway view of the 9th embodiment of the present invention;
Figure 11 is the structure cutaway view of the 10th embodiment of the present invention;
Figure 12 is the structure cutaway view of the 11st embodiment of the present invention;
Figure 13 is the structure cutaway view of the 12nd embodiment of the present invention;
Figure 14 is the structure cutaway view of the 13rd embodiment of the present invention;
Figure 15 is the structure cutaway view of the 14th embodiment of the present invention.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Be first embodiment of the present invention as shown in Figure 1, 2.
A kind of throttle pipe of household air conditioner includes tubular valve body 1, and valve body 1 is generally made by copper or aluminium or steel pipe, and described valve body is cylindrical, and the internal diameter of valve body 1 is Φ 5～Φ 30mm.
In valve body 1, be provided with a quiet spool 2 that directly fixedly installs with described valve body 1, because the outer peripheral face and valve body 1 inner peripheral surface of quiet spool 2 are smooth surface, therefore, be fixed together in mode between above-mentioned quiet spool 2 outer peripheral faces and valve body 1 inwall by extruding, specifically can adopt following fashion of extrusion, on quiet spool 2 outer peripheral faces, be provided with one or more cannelure 23 in advance, again in the valve body 1 outside application of force, the inwall of valve body 1 is snapped in the described cannelure 23 by extruding, so that valve body 1 and quiet spool 2 strong bonded, the cross section of this cannelure 23 is good with semicircle, also can rectangle or square.
In valve body 1, also be provided with two movable valve plugs of valve body 1 axial slip relatively, be respectively first movable valve plug 3 and second movable valve plug 4, this first movable valve plug 3 and second movable valve plug 4 lay respectively at the both sides of quiet spool 2, for plane contact cooperates, plane contact cooperates the structure that can simplify movable valve plug and quiet spool between described each movable valve plug 3,4 and the quiet spool 2.Certainly, the end face of each movable valve plug and quiet spool cooperates, for plane contact cooperates, cooperate for conical surface contact between the corresponding inner face of another end face of this movable valve plug and another the quiet spool that is adjacent between the corresponding inner face of an end face of described movable valve plug and a quiet spool that is adjacent.Described quiet spool 2 and each movable valve plug 3,4 can adopt copper, aluminium, steel or plastics to make, and quiet spool 2 and each movable valve plug 3,4 be with valve body 1 inner chamber match cylindric.
Wherein, the outer peripheral face of described first movable valve plug 3 and second movable valve plug 4 contacts with valve body 1 inner wall sealing.Described first movable valve plug 3 only has a pore 31 that axially runs through its axle center.Described second movable valve plug 4 only has a pore 41 that axially runs through its axle center.
Described quiet spool 2 has one to be run through the capillary porosity duct 21 in its axle center and is distributed in the spout hole passage 22 that these at least two on capillary porosity duct 21 peripheries axially run through, spout hole passage 22 is generally with four and be distributed on around the capillary porosity duct 21 to good, the cross section of described each spout hole passage 22 is a circular hole, and the spout hole passage ratio of circular hole is easier to processing.Certainly cross section also can be circular hole, square hole, tri-angle-holed, polygonal hole, mounting hole or crescent moon hole.
This throttle pipe also comprises first block piece 5 with the passage 51 that passes through for cold-producing medium and second block piece 6 with passage 61, this first block piece 5 and second block piece 6 are back-up ring, and these two block pieces 5,6 are separately positioned on two ends in the valve body 1 and fixing with valve body 1; Because outer peripheral face and valve body inner peripheral surface as the back-up ring of block piece 5,6 are shiny surface, therefore, be fixed together in mode between the outer peripheral face of first and second above-mentioned block piece 5,6 and the valve interior wall by extruding, specifically can adopt following fashion of extrusion, on each block piece 5,6 outer peripheral face, be provided with one or more cannelure 52,62 respectively in advance, again in the valve body 1 outside application of force, the inwall of described valve body 1 is snapped in the described cannelure 52,62 by extruding, can make valve body 1 and back-up ring strong bonded like this as block piece 5,6.
The aperture of the pore 31,41 on described capillary porosity duct 21, each movable valve plug 3,4 is Φ 0.8～Φ 3mm.Through experiment as can be known, when the aperture of pore during less than 0.8mm, cold-producing medium almost can not pass through pore, when the aperture of pore during greater than 3mm, pore can not play the effect of throttling again, and therefore, the aperture of above-mentioned capillary porosity duct 21, pore 31,41 is Φ 0.8～Φ 3mm.Pore then restriction effect less than normal is good more in this scope.
Described first movable valve plug 3 is between first block piece 5 and quiet spool 2, and the spacing between first block piece 5 and the quiet spool 2 is greater than the axial length of first movable valve plug 3; Described second movable valve plug 4 is between second block piece 6 and quiet spool 2, and the spacing between second block piece 6 and the quiet spool 2 is greater than the axial length of second movable valve plug 4.
Move under the high order end state at first movable valve plug 3, described first movable valve plug 3 cooperates with first block piece, 5 gears, and the pore 31 on first movable valve plug 3 communicates with runner 51 on first block piece 5; Move under the low order end state at first movable valve plug 3, the right side of first movable valve plug 3 contacts cooperation with the left side of quiet spool 2, the right side of first movable valve plug 3 blocks the spout hole passage 22 on the quiet spool 2, and the pore 31 on first movable valve plug 3 communicates with the capillary porosity duct 21 of quiet spool 2 simultaneously.
Move under the high order end state at second movable valve plug 4, the left side of second movable valve plug 4 contacts cooperation with the right side of quiet spool 2, the spout hole passage plugging on the quiet spool is lived in the left side of second movable valve plug 4, and the pore 41 on second movable valve plug 4 communicates with the capillary porosity duct 21 of quiet spool 2 simultaneously; Move under the low order end state at second movable valve plug 4, described second movable valve plug 4 cooperates with second block piece, 6 gears, and the pore 41 on second movable valve plug 4 communicates with runner 61 on second block piece 6.
Be illustrated in figure 3 as second embodiment of the present invention.
The difference of this embodiment and first embodiment is, this throttle pipe also comprises a bushing pipe 8, these bushing pipe 8 usefulness metal materials are made, mode by extruding between the outer peripheral face of bushing pipe 8 and valve body 1 inwall is fixed together, and quiet spool 2, first movable valve plug 3, second movable valve plug 4, first block piece 5 and second block piece 6 all are arranged in the bushing pipe 8.
On quiet spool 2 outer peripheral faces, be provided with one or more cannelure 23 in advance, on first and second block piece 5,6 outer peripheral faces, be provided with one or more cannelure 52,62 respectively in advance, again in the valve body 1 outside application of force, the inwall of bushing pipe 8 is snapped in the described cannelure 23 by extruding, so that bushing pipe 8 and quiet spool 2 strong bonded, the inwall of described bushing pipe 8 is snapped in the described cannelure 52,62 by extruding, so that bushing pipe 8 and quiet spool 2 strong bonded, valve body 1 inwall also can correspondingly be expressed on bushing pipe 8 outer walls simultaneously.
As shown in Figure 4, be the 3rd embodiment of the present invention.
The difference of this embodiment and first embodiment is that quiet spool 2 is made up of two quiet spool monomer 2a, 2b, and these two quiet spool monomer 2a, 2b fits tightly and form complete quiet spool 2.
As shown in Figure 5, be the 4th embodiment of the present invention.
The difference of this embodiment and the 3rd embodiment is, also comprises a bushing pipe 8, the set-up mode reference example two of bushing pipe 8.
As shown in Figure 6, be the 5th embodiment of the present invention.
The difference of this embodiment and the 3rd embodiment is that quiet spool 2 is made up of two quiet spool monomer 2a, 2b, and these two quiet spool monomer 2a, 2b are provided with at interval.
As shown in Figure 7, be the 6th embodiment of the present invention.
The difference of this embodiment and the 5th embodiment is, also comprises a bushing pipe 8, the set-up mode reference example two of bushing pipe 8.
As shown in Figure 8, be the 7th embodiment of the present invention.
The difference of this embodiment and the 5th embodiment is, also is provided with back-up ring 7 between two quiet spool monomer 2a, the 2b that are provided with at interval, and back-up ring 7 couples of quiet spool monomer 2a, 2b play position-limiting action.
As shown in Figure 9, be the 8th embodiment of the present invention.
The difference of this embodiment and the 7th embodiment is, also comprises a bushing pipe 8, the set-up mode reference example two of bushing pipe 8.
As shown in figure 10, be the 9th embodiment of the present invention.
The difference of this embodiment and first embodiment is that first block piece 5 and second block piece 6 are the bulge loop that forms convex on valve body 1 inwall.Can simplify the effect of block piece as block piece with bulge loop.
As shown in figure 11, be the of the present invention ten embodiment.
The difference of this embodiment and second embodiment is that first block piece 5 and second block piece 6 are the bulge loop that forms convex by fashion of extrusion on bushing pipe 8 inwalls.
As shown in figure 12, be the 11 embodiment of the present invention.
The difference of this embodiment and first embodiment is that first block piece 5 and second block piece 6 are and plug and the tube connector of solid welding in valve body 1.Because throttle pipe will link to each other with tube connector in use certainly, thus can adopt tube connector to replace block piece, further simplified structure.
As shown in figure 13, be the 12 embodiment of the present invention.
The difference of this embodiment and the 11 embodiment is, also comprise a bushing pipe 8, described quiet spool 2, first movable valve plug 3, second movable valve plug 4 are arranged in the bushing pipe 8, but reference example two, the inner face as first block piece 5 and the tube connector of second block piece 6 contacts with bushing pipe 8 outer faces simultaneously.
Because to the certain requirement of being mounted with of tube connector, be the inner face of tube connector and the axial length that the spacing between the quiet spool 2 is greater than movable valve plug, movable valve plug just can relatively move like this, but the spacing between the inner face of tube connector and the quiet spool can not be too big, insert tube connector during installation, when the inner face of tube connector touches bushing pipe 8, just know to be in place, then tube connector and valve body are welded together and get final product, improve the installation accuracy of tube connector.
The operation principle of aforementioned 12 embodiment and process are identical:
When cold-producing medium flows into from valve body 1 left end, cold-producing medium flows into by the passage 51 of first block piece 5, and promote first movable valve plug 3 and move to right, in first movable valve plug, 3 moving process, cold-producing medium is by the pore 31 on first movable valve plug 3, move under the low order end state at first movable valve plug 3, the right side of first movable valve plug 3 contacts cooperation with the left side of quiet spool 2, the right side of first movable valve plug 3 blocks the spout hole passage 22 of quiet spool 2, pore 31 on first movable valve plug 3 communicates with the capillary porosity duct 21 of quiet spool 2 simultaneously, cold-producing medium can only pass through from the capillary porosity duct 21 of pore 31 on first movable valve plug 3 and quiet spool 2, realizes dynamic throttling for the first time; Cold-producing medium continues to turn right mobile, and promote second movable valve plug 4 and move to right, in second movable valve plug, 4 moving process, cold-producing medium is by the pore 41 on second movable valve plug 4, move under the low order end state at second movable valve plug 4, second movable valve plug 4 stops to move under the stopping of second block piece 6, and cold-producing medium communicates with passage 61 on second block piece 6 via the pore 41 on second movable valve plug 4, realizes dynamic throttling for the second time.
When cold-producing medium when valve body 1 right-hand member flows into, its course of work just with opposite, is not repeated at this.
Can be by changing the axial length of each movable valve plug, make the pore length difference on the movable valve plug, cold-producing medium is when two ends, the left and right sides are passed through like this, the length difference of total pore that cold-producing medium passes through, the cold-producing medium flow velocity difference of promptly passing through from two ends, and then realize that adaptation refrigeration and heating condition transform mutually.
As shown in figure 14, be the 13 embodiment of the present invention.
The difference of this embodiment and first embodiment is that have the right cavity 32 of a bore greater than pore 31 diameters on first movable valve plug 3 on the right side of first movable valve plug 3, pore 31 is connected with right cavity 32; Have the left cavity 42 of a bore greater than pore 41 diameters on second movable valve plug 4 on the left side of described second movable valve plug 4, described pore 41 is connected with left cavity 42.
As shown in figure 15, be the 14 embodiment of the present invention.
The difference of this embodiment and the 13 embodiment is, also comprises a bushing pipe 8, the set-up mode reference example two of bushing pipe 8.
13rd, the operation principle of 14 embodiment and process are identical.
When cold-producing medium flows into from valve body 1 left end, cold-producing medium flows into by the passage 51 of first block piece 5, and promote first movable valve plug 3 and move to right, in first movable valve plug, 3 moving process, cold-producing medium is by the pore on first movable valve plug 3 31 and each spout hole 32, move under the low order end state at first movable valve plug 3, the right side of first movable valve plug 3 contacts cooperation with the left side of quiet spool 2, the right side of first movable valve plug 3 blocks the spout hole passage 22 on the quiet spool, right cavity 32 on first movable valve plug 3 communicates with the capillary porosity duct 21 of quiet spool 2 simultaneously, in the time of in flow of refrigerant arrives left cavity 23, cold-producing medium has a process that expands a little suddenly again, and cold-producing medium can only pass through from the capillary porosity duct 21 of pore 31 on first movable valve plug 3 and quiet spool 2, realizes dynamic throttling for the first time; Cold-producing medium continues to turn right mobile, after passing through to capillary porosity duct 21 on the quiet spool, cold-producing medium enters in the left cavity 42 of second movable valve plug, cold-producing medium has a process that expands a little suddenly, produce the power that promotion second movable valve plug 4 that amplifies moves, and promote second movable valve plug 4 and move to right, in second movable valve plug, 4 moving process, cold-producing medium is by the pore 41 on second movable valve plug 4, move under the low order end state at second movable valve plug 4, second movable valve plug 4 stops to move under the stopping of second block piece 6, cold-producing medium communicates with passage 61 on second block piece 6 via the pore 41 on second movable valve plug 4, realizes dynamic throttling for the second time.
Claims (13)
1. throttle pipe of household air conditioner, include tubular valve body (1), be provided with the quiet spool (2) that is provided with this valve body (1) relative fixed in the valve body (1), and the movable valve plug of valve body (1) axial slip relatively, described quiet spool (2) has one to be run through the capillary porosity duct (21) in its axle center and is distributed at least two spout hole passages (22) that axially run through of this capillary porosity duct (21) periphery, it is characterized in that: described quiet spool (2) has only one, described movable valve plug has two, be positioned at the both sides of quiet spool (2), be respectively first movable valve plug (3) and second movable valve plug (4), wherein, first movable valve plug (3) only have one run through its axle center pore (31), second movable valve plug (4) only have one run through its axle center pore (41), this throttle pipe also comprises having the passage (51 that passes through for cold-producing medium, 61) first block piece (5) and second block piece (6), these two block pieces (5,6) be separately positioned in the valve body (1) two ends and with valve body (1) relative fixed setting, described first movable valve plug (3) is positioned between first block piece (5) and the quiet spool (2), and described second movable valve plug (4) is positioned between second block piece (6) and the quiet spool (2).
2. throttle pipe of household air conditioner according to claim 1 is characterized in that: described quiet spool (2) is made up of at least two quiet spool monomers (2a, 2b), and adjacent two quiet spool monomers (2a, 2b) fit tightly and form complete quiet spool (2).
3. throttle pipe of household air conditioner according to claim 1 is characterized in that: described quiet spool (2) is made up of at least two quiet spool monomers (2a, 2b), and adjacent two quiet spool monomers (2a, 2b) are provided with at interval.
4. throttle pipe of household air conditioner according to claim 3 is characterized in that: be provided with back-up ring (7) between the described adjacent two quiet spool monomers (2a, 2b).
5. throttle pipe of household air conditioner according to claim 1, it is characterized in that: have the right cavity (32) of a bore greater than the pore on first movable valve plug (31) diameter on the right side of described first movable valve plug (3), described pore (31) is connected with right cavity (32); Have the left cavity (42) of a bore greater than the pore on second movable valve plug (41) diameter on the left side of described second movable valve plug (4), described pore (41) is connected with left cavity (42).
6. according to the described throttle pipe of household air conditioner of arbitrary claim in the claim 1～5, it is characterized in that: described quiet spool (2) directly and valve body (1) inwall fix, be provided with one or more cannelure (23) respectively in advance on described quiet spool (2) outer peripheral face, the inwall of described valve body (1) snaps in the described cannelure (23) by extruding.
7. throttle pipe of household air conditioner according to claim 6, it is characterized in that: described each block piece (5,6) is back-up ring, be provided with one or more cannelure (52,62) respectively in advance on described each block piece (5,6) outer peripheral face, the inwall of described valve body (1) snaps in the described cannelure (52,62) by extruding.
8. throttle pipe of household air conditioner according to claim 6 is characterized in that: described each block piece (5,6) is for forming the bulge loop of convex on valve body (1) inwall.
9. throttle pipe of household air conditioner according to claim 6 is characterized in that: described each block piece (5,6) is for plugging and the tube connector of solid welding in valve body (1).
10. according to the described throttle pipe of household air conditioner of arbitrary claim in the claim 1～5, it is characterized in that: also be provided with a bushing pipe (8) between described quiet spool (2) and movable valve plug (3,4) and valve body (1) inwall, be provided with one or more cannelure (23) respectively in advance on described quiet spool (2) outer peripheral face, mode by extruding between described bushing pipe (8) outer peripheral face and valve body (1) inwall is fixed together, simultaneously, described bushing pipe (5) extruding snaps onto in the described cannelure (23).
11. throttle pipe of household air conditioner according to claim 10, it is characterized in that: described each block piece (5,6) is back-up ring, on described each block piece (5,6) outer peripheral face, be provided with one or more cannelure (52,62) respectively in advance, the inwall of described bushing pipe (8) snaps in the described cannelure (52,62) by extruding, and the outer face of each block piece (5,6) flushes with two outer faces of described bushing pipe (8) respectively simultaneously.
12. throttle pipe of household air conditioner according to claim 10 is characterized in that: described each block piece (5,6) is for forming the bulge loop of convex on bushing pipe (8) inwall.
13. throttle pipe of household air conditioner according to claim 10 is characterized in that: described each block piece (5,6) is for plugging and the tube connector of solid welding in valve body (1), and the inner face of this tube connector contacts with bushing pipe (8) outer face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810122368XA CN101446461B (en) | 2008-11-11 | 2008-11-11 | Throttle pipe of household air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810122368XA CN101446461B (en) | 2008-11-11 | 2008-11-11 | Throttle pipe of household air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101446461A CN101446461A (en) | 2009-06-03 |
| CN101446461B true CN101446461B (en) | 2010-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810122368XA Expired - Fee Related CN101446461B (en) | 2008-11-11 | 2008-11-11 | Throttle pipe of household air conditioner |
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| CN (1) | CN101446461B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245140A (en) * | 2013-04-22 | 2013-08-14 | 昆山市双桥铜业有限公司 | Automotive air conditioning copper expansion valve |
| CN104748455B (en) * | 2013-12-25 | 2018-01-19 | 珠海格力电器股份有限公司 | Bidirectional throttle valve and refrigerating system with same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201344683Y (en) * | 2008-11-11 | 2009-11-11 | 金仁召 | Throttle pipe for domestic air conditioner |
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2008
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201344683Y (en) * | 2008-11-11 | 2009-11-11 | 金仁召 | Throttle pipe for domestic air conditioner |
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| CN101446461A (en) | 2009-06-03 |
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