CN101614288B - Valve seat, four-way reversing valve main valve using same and four-way reversing valve - Google Patents
Valve seat, four-way reversing valve main valve using same and four-way reversing valve Download PDFInfo
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- CN101614288B CN101614288B CN2008101262148A CN200810126214A CN101614288B CN 101614288 B CN101614288 B CN 101614288B CN 2008101262148 A CN2008101262148 A CN 2008101262148A CN 200810126214 A CN200810126214 A CN 200810126214A CN 101614288 B CN101614288 B CN 101614288B
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Abstract
The invention discloses a valve seat. The upper surface of the valve seat is a flat surface, and the lower surface of the valve seat is inosculated with the inner wall of a valve body; the valve seat is sequentially provided with three through holes, i.e. a first through hole, a second through hole and a third through hole, along the length direction of the valve seat; and the valve seat is formed by fixedly connecting an upper valve seat and a lower valve seat, wherein the material heat conductivity of the lower valve seat is lower than the material heat conductivity of the upper valve seat. The upper valve seat is made of materials with better machining property to ensure the machining precision of the upper surface, thereby the invention can meet the requirement of the sealing between a sliding part and a sliding seat; the lower valve seat is made of stainless steel materials, the heat conductivity of stainless steel is only about 25 percent of the heat conductivity of brass, thereby the invention can effectively reduce the overall heat conduction coefficient between high-temperature fluid and low-temperature fluid which are arranged on the valve seat so as to greatly reduce the energy loss; preferably, the upper valve seat is made of brass materials, the lower valve seat is made of the stainless steel materials. The invention also provides a four-way reversing valve main valve using the valve seat and a four-way reversing valve.
Description
Technical field
The present invention relates to a kind of four-way change-over valve that is used for refrigerant-cycle systems, the main valve of four-way reversing valve and the four-way change-over valve that are specifically related to valve seat and use this valve seat.
Background technique
Heat pump type air conditioner is compared with single cold air-conditioning, and crucial parts are four-way change-over valve.Existing four-way change-over valve mainly is made up of electromagnetic coil, pilot valve and main valve, just can realize the commutation of main valve by the acting in conjunction of electromagnetic coil and pilot valve, switch the circulating direction of refrigeration working medium by the commutation of main valve, so switch heat pump type air conditioner refrigeration, heat state.When refrigerating state, outdoor heat converter uses as condenser, and indoor heat converter absorbs heat as vaporizer; And when heating state, outdoor heat converter uses as vaporizer, and indoor heat converter is as the condenser release heat, thus the purpose of the dual-use that makes heat pump type air conditioner realize freezing summer to heat winter.
See also Fig. 1 a and Fig. 1 b, Fig. 1 a and Fig. 1 b are the structural representations of the main valve of existing heat pump-type idle call four-way change-over valve, and it illustrates the refrigeration mode and the heating mode of existing heat pump-type idle call four-way change-over valve respectively.As shown in FIG., the interior welds of columnar main valve body 101 has valve seat 103; Two piston elements 104 in the described main valve body 101 are fixedly connected by connecting rod 102, and described two piston elements 104 are divided into three chambeies, left, center, right with main valve, and lumen is provided with the D mouth that is communicated with compressor discharge port; Described slider part 105 drives fixing by described connecting rod 102, and described slider part 105 is with above-mentioned lumen separated into two parts, have three ports on the described valve seat 103: in the S mouth that is communicated with compressor suction port, E mouth that is communicated with indoor heat converter and the C mouth that is communicated with outdoor heat converter; Wherein, described slider part 105 is in the refrigeration position on described valve seat 103 under the drive of described connecting rod 102 and heat between the position and slide, as shown in Figure 1a, when the refrigeration position, described slider part 105 slides into the left side, described E mouth and the connection of S mouth, described D mouth and C mouth are communicated with, E mouth and S mouth circulation this moment low-temp low-pressure gas, D mouth and C mouth circulation high temperature and high pressure gas; Shown in Fig. 1 b, when heating the position, described slider part 105 slides into the right side, and described S mouth and the connection of C mouth, described D mouth and E mouth are communicated with, S mouth and C mouth circulation this moment low-temp low-pressure gas, D mouth and E mouth circulation high temperature and high pressure gas.
Can learn as mentioned above, in service in air-conditioning system, high temperature and high pressure gas and low-temp low-pressure gas are simultaneously flowing in the main valve of four-way reversing valve.Fig. 2 a, Fig. 2 b and Fig. 2 c are respectively the three-view diagram of existing valve seat 103; Because existing main valve valve seat 103 adopts the higher brass of heat conductivity to make, and therefore, exists certain heat transfer between adjacent E mouth, S mouth and the C mouth on the described valve seat 103, thereby bring the certain energy loss.Wherein, the heat transfer process between each mouthful sees also Fig. 3 a and Fig. 3 b, and Fig. 3 a and Fig. 3 b illustrate the heat transfer process of the valve seat of existing four-way change-over valve at refrigeration mode and heating mode respectively.
Summary of the invention
At above-mentioned defective, the technical problem that the present invention solves is the main valve of four-way reversing valve and the four-way change-over valve that a kind of valve seat are provided and use this valve seat.
Valve seat provided by the invention places in the valve body, and the upper surface of this valve seat is the plane, and lower surface and valve interior wall match; Length direction along valve seat, have three through holes on the valve seat: be followed successively by first through hole, second through hole and third through-hole, described valve seat is that the top valve seat, the lower valve seat that are fixed with one are formed, and wherein, the material heat conductivity of described lower valve seat is lower than the material heat conductivity of described top valve seat.
Preferably, the material of described top valve seat adopts brass, aluminum or aluminum alloy, and the material of lower valve seat adopts stainless steel; The thickness of described top valve seat is 1～5mm.
Preferably, have groove on the upper surface of described lower valve seat, correspondingly, be extended with projection downwards on the lower surface of described top valve seat, described projection places in the described groove.
Be that interference fit is to be used for the positioning and fixing between described top valve seat and the lower valve seat between described projection and the described groove.
Adopt spot welding mode positioning and fixing between described top valve seat and the lower valve seat.
Preferably, the outer rim of the opposite side of described top valve seat is extended with convex shoulder respectively downwards, and the upper end portion of described lower valve seat places in the accommodating part that forms between described two convex shoulders.
Be that interference fit is to be used for the positioning and fixing between described top valve seat and the lower valve seat between the upper end portion of described lower valve seat and described two convex shoulders.
Adopt spot welding mode positioning and fixing between described top valve seat and the lower valve seat.
Preferably, also comprise several locating studs, be provided with several corresponding respectively blind holes on the lower surface of described top valve seat and the upper surface of lower valve seat, described several locating studs place corresponding blind hole on the valve seat of described upper and lower part respectively.
Be that interference fit is to be used for the positioning and fixing between described top valve seat and the lower valve seat between the blind hole on described locating stud and the described upper and lower part valve seat.
Adopt spot welding mode positioning and fixing between described top valve seat and the lower valve seat.
Valve seat provided by the invention compared with prior art, valve seat provided by the invention adopts upper and lower valve seat two partly to combine, wherein, the material heat conductivity of described lower valve seat is lower than the material heat conductivity of described top valve seat, the top valve seat is optional to add performance brass, aluminum or aluminum alloy preferably with machine, to guarantee the machining accuracy of upper surface, satisfy the seal request between the slide member and slide in the four-way change-over valve commutation process; Lower valve seat is selected relative materials with smaller of heat conductivity such as stainless steel for use, stainless heat conductivity only be brass heat conductivity about 25%, can effectively reduce the comprehensive transmission of heat of valve seat place high temperature fluid between cryogen, reduce the energy loss that transmission of heat causes greatly.
In preferred version of the present invention, be respectively arranged with the projection and the groove that press-fit cooperation mutually on described top valve seat and the lower valve seat, utilize drive fit relation or spot welding mode positioning and fixing between described projection and the groove, be beneficial to overall assembling.
In another preferred version of the present invention, two oppose side edges of described top valve seat are extended with convex shoulder respectively downwards, press-fit between the upper end portion of described lower valve seat and the accommodating part that two convex shoulders form and cooperate, equally, utilize drive fit relation or spot welding mode between convex shoulder and the described lower valve seat upper end portion to obtain reliable location, fixed relationship.
In another preferred version of the present invention, described top valve seat and lower valve seat are provided with corresponding blind hole, adopt the metal pin to carry out fixedly connected in the corresponding blind hole of upper and lower part valve seat, can adopt crimping or welding means of fixation, can reduce the material use amount of top valve seat like this, reduce waste of material, using effect is identical.
The main valve of four-way reversing valve of this valve seat of use provided by the invention comprises valve seat, and described valve seat adopts foregoing valve seat.
The four-way change-over valve of this valve seat of use provided by the invention comprises main valve, and described main valve adopts foregoing main valve of four-way reversing valve.
Description of drawings
Fig. 1 a and Fig. 1 b are the structural representations of the main valve of existing heat pump-type idle call four-way change-over valve, and wherein, Fig. 1 a is the refrigeration mode schematic representation, and Fig. 1 b is the heating mode schematic representation;
Fig. 2 a, Fig. 2 b and Fig. 2 c are the structural representations of existing valve seat, and wherein, Fig. 2 a is a plan view, and Fig. 2 b is a plan view, and Fig. 2 c is a side view;
Fig. 3 a and Fig. 3 b are the heat transfer process schematic representation of the valve seat of existing four-way change-over valve, and wherein, Fig. 3 a is the refrigeration mode schematic representation, and Fig. 3 b is the heating mode schematic representation;
Fig. 4 a, Fig. 4 b and Fig. 4 c are the structural representations of valve seat provided by the present invention, and wherein, Fig. 4 a is a plan view, and Fig. 4 b is a plan view, and Fig. 4 c is a side view;
Fig. 5 a is a linkage structure schematic representation between first kind of mode of execution described top valve seat and the lower valve seat; Fig. 5 b, Fig. 5 c and Fig. 5 d (three figure are the partial enlarged drawing of I position among Fig. 5 a) illustrate the groove and the corresponding projection of three kinds of sectional shapes respectively;
Fig. 6 is a linkage structure schematic representation between second kind of mode of execution described top valve seat and the lower valve seat;
Fig. 7 is a linkage structure schematic representation between the third mode of execution described top valve seat and the lower valve seat;
Fig. 8 is the overall structure schematic representation of main valve of four-way reversing valve provided by the present invention, and wherein, Fig. 8 a is the plan view of main valve, and Fig. 8 b is the component side view of main valve shown in Fig. 8 a after main valve cylindrical shell welding seat, adapter before the assembling;
Fig. 9 is the overall structure schematic representation of four-way change-over valve provided by the present invention.
Identical in the accompanying drawings reference character is represented parts identical or equivalence.
Shown in Fig. 2-Fig. 9:
Electromagnetic coil 10;
Pilot valve 20, little valve body 201, sleeve pipe 202, end socket 203, core iron 204, trailing frame 205, little valve seat 206, sliding bowl 207, return spring 208, divided magnetic ring 209, e capillary tube, s capillary tube, c capillary tube, d capillary tube;
Compressor 40, outdoor heat converter 50, throttle element 60, indoor heat converter 70.
Embodiment
Specify several mode of execution of the present invention below in conjunction with Figure of description.
The structural design thought that the invention provides valve seat is that on the basis of the mechanical processing technique that guarantees the valve seat upper surface, the heat loss that the heat transmission between each port of minimizing valve seat place is brought is beneficial to energy-conservation.
Based on this, present embodiment provides a kind of four-way change-over valve valve seat of composite structure, and this valve seat 3 is formed for being fixed with one by the upper and lower part valve seat, and the material heat conductivity of lower valve seat is lower than the material heat conductivity of top valve seat.Specifically see also Fig. 4 a, Fig. 4 b and Fig. 4 c, Fig. 4 a, Fig. 4 b and Fig. 4 c are the structural representations of valve seat provided by the present invention.
Shown in Fig. 4 a, the described valve seat 3 of present embodiment is formed by fixedly connecting by top valve seat 31 and lower valve seat 32, wherein the material of top valve seat 31 adopts brass, the material of lower valve seat 32 adopts stainless steel, the upper surface 311 of described top valve seat 31 is for machine adds the plane, be used to realize and the slider part of four-way change-over valve between be sealed and matched; Shown in Fig. 4 c, the side view of described valve seat 3 is similar to " D " font, the lower surface 321 and the main valve of four-way reversing valve body inwall of described lower valve seat 32 match, be beneficial to location, sealing between valve seat 3 and the valve body, certainly, the sectional shape of described valve seat 3 changes along with the variation of the sectional shape of main valve body inner chamber, and is not limited to illustrated " D " font; Shown in Fig. 4 b, length direction along valve seat 3, have three big end down step holes on the valve seat 3: be followed successively by first through hole 33, second through hole 34 and third through-hole 35, wherein, described first through hole 33 is taken over the E that is connected indoor heat converter and is communicated with, described second through hole 34 is taken over the S that is connected the compressor inlet connection and is communicated with, and described third through-hole 35 is taken over the C of junction chamber outer heat-exchanger and is communicated with.
Diagram, the through hole on the described valve seat 3 is big end down step hole, and so design is the location and installation for the ease of taking over, and is understandable that, and described first through hole 33, second through hole 34 and third through-hole 35 can satisfy the use needs equally for straight hole.
Than existing four-way change-over valve valve seat, existing valve seat is made by brass material, and its heat conductivity is 106W/ (m.K), between the adjacent fluid port heat transfer takes place, and then has bigger energy loss; And valve seat construction provided by the present invention, top valve seat 31 is selected the brass material for use, and its upper surface can obtain higher processing precision, and the quality of fit between the slide member can satisfy the seal request in the four-way change-over valve commutation process; Lower valve seat 32 is selected stainless steel for use, because stainless heat conductivity is 24.5W/ (m.K), can effectively reduce the comprehensive thermal conductivity of valve seat place high temperature fluid between cryogen, therefore, can reduce energy loss greatly.In fact, described top valve seat 31 also can select for use machine to add performance aluminum or aluminum alloy material preferably; Described lower valve seat 32 can select that other is anti-corrosion, high temperature resistant, the material of high pressure for use; and be not limited to stainless steel; as long as being lower than the heat conductivity of upper valve seat material, the heat conductivity of lower valve seat material satisfies goal of the invention of the present invention, all in the protection domain of this patent.
Further, the thickness T of described top valve seat 31 is 1～5mm.In fact, for reducing energy loss, when satisfying the condition of machining, the thickness T of described top valve seat 31 should reduce as far as possible, to reduce energy loss to greatest extent.
Before the assembling, need that at first described top valve seat 31 and lower valve seat 32 are carried out preposition and fix, top valve seat 31 is fixedlyed connected by welding manner such as spot welding with lower valve seat 32.Again valve seat 3 of the present invention is inserted and carry out the general assembly welding in the valve body.
About location, the fixed structure between described top valve seat 31 and the lower valve seat 32, further, the present invention also provides three kinds of preferred implementations in addition.
See also Fig. 5 a, the figure shows linkage structure between first kind of described top valve seat 31a and the lower valve seat 32a.
Shown in Fig. 5 a, have groove 322 on the upper surface of described lower valve seat 32a, correspondingly, be extended with projection 312 on the lower surface of described top valve seat 31a downwards, described protruding 312 place in the described groove 322.
Wherein, described protruding 312 height is greater than the degree of depth of described groove 322, be fitted in the described groove 322 described protruding 312 during assembling, because the brass material is softer, reach the effect of interference fit by pressing described protruding 312 in described groove 322 internal strains, to be used for the positioning and fixing between described top valve seat and the lower valve seat.
Certainly, the preposition between described top valve seat 31a and the lower valve seat 32a is fixing also can to adopt other modes to realize, such as, can adopt spot welding mode positioning and fixing between described top valve seat 31a and the lower valve seat 32a.
Wherein, the groove on the described lower valve seat 32a upper surface and the sectional shape of respective bump can be for multiple, see also Fig. 5 b, Fig. 5 c and Fig. 5 d, in order to be clearly shown that the sectional shape of described groove 322 more, it is respectively the local enlarged diagram of three kinds of groove 322 sectional shapes.
Shown in Fig. 5 b, the sectional shape of described groove 322a is up-small and down-big trapezoidal; Shown in Fig. 5 c, the sectional shape of described groove 322b is up big and down small trapezoidal; Shown in Fig. 5 c, the sectional shape of described groove 322c is a rectangle.In fact, described groove 322 sectional shapes that can realize above-mentioned matching relationship are not limited to aforementioned three kinds of situations.
Certainly, after the press fit arrangement because that the groove 322 of up-small and down-big trapezoid cross section and the positioning and fixing between the described brass projection 312 concern is more reliable, thus groove 322a shown in Fig. 5 b be shaped as optimum scheme.
Before press fit arrangement, the thickness of described top valve seat is about 1.3mm, with lower valve seat pressing or welding fixing after, the surface of valve seat has certain deformation, also have a certain amount of variation when adding with cylindrical shell 11 welding, so the surface of valve seat has the distortion about 0.08～0.15, therefore after finishing, the cylindrical shell 11 and the welding of adapter, valve seat need carry out the plane processing of the upper surface of valve seat, after cutting, make the upper surface of valve seat keep smooth and and reach certain surface quality, thereby satisfy the seal request with slider part 5.General amount of finish is about 0.3mm, and the thickness through processing superior posterior valve seat is retained in 1mm like this.Certainly, the top valve seat is not limited to this thickness, and along with the size variation of the internal diameter of main valve cylindrical shell 11, the thickness of top valve seat is also wanted corresponding suitable variation, satisfying the requiring under the situation of machining, the thickness of top valve seat is as far as possible little of to reduce correspondingly heat transfer loss.
See also Fig. 6, this figure is a linkage structure schematic representation between second kind of described top valve seat 31b and the lower valve seat 32b.
As shown in Figure 6, the thickness T of described top valve seat 31b is 1-5mm, the thickness of top valve seat 31b can suitably be adjusted with the size of main valve cylindrical shell 11, usually when the internal diameter of main valve cylindrical shell 11 is 24mm, the thickness of top valve seat 31b can be 3mm, and the outer rim of the opposite side of described top valve seat 31b is extended with convex shoulder 313 respectively downwards, and the upper end portion of described lower valve seat 32b places in the accommodating part that forms between described two convex shoulders 313.
In this mode of structure, for realizing drive fit relation between described top valve seat 31a and the described lower valve seat 32b, the length of formed accommodating part is less than the length of described lower valve seat 32b upper end portion between the described convex shoulder 313, during assembling described lower valve seat 32b is fitted between the described convex shoulder 313 in the formed accommodating part, be out of shape the effect that reaches interference fit by the described convex shoulder 313 of pressing, realize the positioning and fixing between described top valve seat 31b and the lower valve seat 32b.
Need to prove that described convex shoulder 313 can be oppositely arranged along front and rear direction or left and right direction, or along both direction convex shoulder 313 is set all; Certainly, under the situation that the valve inner structure space allows, along both direction convex shoulder 313 is set and is optimum scheme, to obtain positioning and fixing relation between reliable more top valve seat 31b and the lower valve seat 32b.Certainly, can also after top valve seat and lower valve seat crimping are fixing, weld again with its fixing reliability of further increase.
See also Fig. 7, this figure is a linkage structure schematic representation between the third described top valve seat 31c and the lower valve seat 32c.As shown in Figure 7, the thickness T of described top valve seat 31c is 5mm, be provided with several corresponding respectively blind holes 314,323 on the lower surface of described top valve seat 31c and the upper surface of lower valve seat 32c, it is fixedly connected to adopt locating stud 36 to carry out respectively in the corresponding blind hole 314,323 of described upper and lower part valve seat, is that interference fit is to be used for the positioning and fixing between described top valve seat and the lower valve seat between the blind hole 314,323 on described locating stud 36 and the described upper and lower part valve seat.Equally, also can adopt welding as spot welding mode positioning and fixing between described top valve seat and the lower valve seat.
Present embodiment also provides a kind of main valve of four-way reversing valve, see also Fig. 8, Fig. 8 is the overall structure schematic representation of main valve of four-way reversing valve provided by the present invention, wherein, Fig. 8 a is the plan view of main valve, and Fig. 8 b is the component side view of main valve shown in Fig. 8 a after main valve cylindrical shell welding seat, adapter before the assembling.
The main valve of four-way reversing valve that present embodiment provides mainly by main valve body 1, be fixedly installed on the valve seat 3 of main valve body 1 inner chamber, place two pistons 4 of described valve seat 3 both sides, the connecting rod 2 that connects two pistons 4, the slider part 5 that is fixedly installed on described connecting rod 2 middle parts to form respectively; Wherein, described main valve body 1 is welded by cylindrical barrel 11 and two end caps 12; Described valve seat 3 adopts aforementioned split type valve seat, the material heat conductivity of lower valve seat 32 is lower than the material heat conductivity of top valve seat 31, adopt soldering processes between described valve seat 3 and the main valve body, scolder infiltrates matching gap between the two during soldering, both welderings are one, can guarantee sealing and requirement of strength; Described two piston elements 4 are divided into three chambeies, left, center, right with main valve, described slider part 5 is with above-mentioned lumen separated into two parts, move left and right along with piston 4, the lower surface of described slider part 5 can and fit tightly along the upper surface slide of described valve seat 3, its left and right sides limit position is respectively refrigerating state and heats state, is refrigerating state shown in Fig. 8 a.Shown in the figure, have fourth hole 111 on the valve body 1 of described valve seat 3 opposite sides, described fourth hole 111 is taken over the D that is connected exhaust outlet of compressor and is communicated with, described first through hole 33 on the described valve seat 3 is taken over the E that is connected indoor heat converter and is communicated with, described second through hole 34 is taken over the S that is connected the compressor inlet connection and is communicated with, and described third through-hole 35 is taken over the C of junction chamber outer heat-exchanger and is communicated with.
Present embodiment also provides a kind of four-way change-over valve, sees also Fig. 9, and this figure is the overall structure schematic representation of four-way change-over valve provided by the present invention.
As shown in Figure 9, the described four-way change-over valve of present embodiment mainly is made up of electromagnetic coil 10, pilot valve 20 and main valve 30.Wherein, the structure of described main valve 30 does not repeat them here as previously mentioned.
Described pilot valve 20 comprises little valve body 201, sleeve pipe 202, end socket 203, core iron 204, trailing frame 205, little valve seat 206, sliding bowl 207, return spring 208, e capillary tube, s capillary tube, c capillary tube and d capillary tube; Has the ladder blind hole on the described little valve body 201, one end plug-in mounting of described sleeve pipe 202 is fixed in the described ladder blind hole and its other end is welded as a whole (if exchange control valve by end socket 203 sealing, be provided with divided magnetic ring 209 in the inboard of described end socket 203), described core iron 204 is arranged in the described sleeve pipe 202, described trailing frame 205 places the inner chamber of described little valve body 201 and its right-hand member to fixedly connected with described core iron 204, described little valve seat 206 is fixedly installed in the described little valve body 201, described sliding bowl 207 is fixedly installed on the trailing frame 205 of described little valve seat 206 tops, and the lower surface of described sliding bowl 207 can slide with respect to the lower surface of described little valve seat 206, described return spring 208 is arranged between described core iron 204 and the end socket 203, be welded with the e capillary tube successively on the described little valve seat 206, the s capillary tube, the c capillary tube and respectively with chamber, a described main valve left side, S takes over and the right chamber of main valve is communicated with, and is welded with on the little valve body 201 of described little valve seat 206 opposite sides with described D and takes over the d capillary tube that is communicated with.
Described electromagnetic coil 10 is made up of coil component and magnet case, and suit is fixed on the outside of described sleeve pipe 202.
The working procedure of four-way change-over valve provided by the present invention, as described below:
When air-conditioning needs refrigerating operaton, electromagnetic coil 10 outages, under the effect of return spring 208, core iron 204 trailing frames 205 assemblies drive sliding bowl 207 and are moved to the left together, thereby e, s two capillary tubies and c, d two capillary tubies are communicated respectively, be the low-pressure low-temperature district, communicate with s capillary tube, sliding bowl 207 inner chambers, e capillary tube in the chamber, a main valve left side because S takes over, at this moment, chamber, a main valve left side is the low-pressure low-temperature district; The high pressure-temperature gas of compressor air-discharging end enters the right chamber of described main valve by d capillary tube, little valve body 201 inner chambers, c capillary tube, and at this moment, the right chamber of main valve is the high pressure-temperature district; Just formed a pressure difference like this between the chamber, the left and right sides in described main valve 30, under this action of pressure, described slider part 5 and piston 4 are shifted to the left side, E, S two pipes are communicated, D, C two pipes communicate, at this moment, the refrigeration working medium circulation path of internal system is: compressor 40 relief openings → D adapter → main valve body 1 → C adapter → outdoor heat converter 50 → throttle element 60 → indoor heat converter 70 → E adapter → slider part 5 → S adapter → compressor 40 intakepories, system realizes refrigeration cycle.
When air-conditioning needs heating operation, electromagnetic coil 10 energisings, under the effect of coil electromagnetic force, the sliding bowl 207 of active force drive that core iron 204 trailing frames 205 assemblies overcome return spring 208 moves right together, thereby c, s two capillary tubies and e, d two capillary tubies are communicated respectively; The right chamber of described main valve communicates with s capillary tube, sliding bowl 207 inner chambers, c capillary tube, and at this moment, the right chamber of main valve is the low-pressure low-temperature district; The high pressure-temperature gas of compressor air-discharging end enters chamber, a described main valve left side by d capillary tube, little valve body 201 inner chambers, e capillary tube, and at this moment, chamber, a described main valve left side becomes the high pressure-temperature district; Just formed a pressure difference like this between the chamber, the left and right sides in described main valve 30, under this action of pressure, described slider part 5 and piston 4 are shifted to the right side, C, S two pipes are communicated, D, E two pipes communicate, at this moment, the refrigeration working medium circulation path of internal system is: compressor 40 relief openings → D adapter → main valve body 1 → E adapter → indoor heat converter 70 → throttle element 60 → outdoor heat converter 50 → C adapter → slider part 5 → S adapter → compressor 40 intakepories, system realizes heating circulation.
In sum, the present invention is guaranteeing under the four-way change-over valve commutation function reliable premise, greatly reduce refrigeration cycle and heat heat transfer amount between each fluid openings of 3 places of valve seat described in the cyclic process, the present invention has energy-saving material-saving, high-efficiency reliable characteristics, meets the research and development trend of heat pump with four-way change-over valve.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (11)
1. valve seat places in the valve body, and the upper surface of this valve seat is the plane, and lower surface and valve interior wall match; Length direction along valve seat, have three through holes on the valve seat: be followed successively by first through hole, second through hole and third through-hole, it is characterized in that, this valve seat is that the top valve seat, the lower valve seat that are fixed with one are formed, wherein, the material heat conductivity of described lower valve seat is lower than the material heat conductivity of described top valve seat.
2. valve seat according to claim 1 is characterized in that, the material of described top valve seat adopts brass, aluminum or aluminum alloy, and the material of lower valve seat adopts stainless steel; The thickness of described top valve seat is 1～5mm.
3. valve seat according to claim 1 is characterized in that, adopts spot welding mode positioning and fixing between described top valve seat and the lower valve seat.
4. according to claim 1,2 or 3 described valve seats, it is characterized in that having groove on the upper surface of described lower valve seat, correspondingly, be extended with projection downwards on the lower surface of described top valve seat, described projection places in the described groove.
5. valve seat according to claim 4 is characterized in that, is that interference fit is to be used for the positioning and fixing between described top valve seat and the lower valve seat between described projection and the described groove.
6. according to claim 1,2 or 3 described valve seats, it is characterized in that the outer rim of the opposite side of described top valve seat is extended with convex shoulder respectively downwards, the upper end portion of described lower valve seat places in the accommodating part that forms between described two convex shoulders.
7. valve seat according to claim 6 is characterized in that, is that interference fit is to be used for the positioning and fixing between described top valve seat and the lower valve seat between the upper end portion of described lower valve seat and described two convex shoulders.
8. according to claim 1,2 or 3 described valve seats, it is characterized in that, also comprise several locating studs, be provided with several corresponding respectively blind holes on the lower surface of described top valve seat and the upper surface of lower valve seat, described several locating studs place corresponding blind hole on the valve seat of described upper and lower part respectively.
9. valve seat according to claim 8 is characterized in that, is that interference fit is to be used for the positioning and fixing between described top valve seat and the lower valve seat between the blind hole on described locating stud and the described upper and lower part valve seat.
10. main valve of four-way reversing valve comprises valve seat, it is characterized in that, described valve seat adopts claim 1 described valve seat of arbitrary claim to the claim 9.
11. four-way change-over valve comprises main valve, it is characterized in that, described main valve adopts the described main valve of four-way reversing valve of claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101262148A CN101614288B (en) | 2008-06-26 | 2008-06-26 | Valve seat, four-way reversing valve main valve using same and four-way reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101262148A CN101614288B (en) | 2008-06-26 | 2008-06-26 | Valve seat, four-way reversing valve main valve using same and four-way reversing valve |
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| CN101614288A CN101614288A (en) | 2009-12-30 |
| CN101614288B true CN101614288B (en) | 2011-07-06 |
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| JP5379776B2 (en) * | 2010-10-29 | 2013-12-25 | 株式会社鷺宮製作所 | Manufacturing method of flow path switching valve and flow path switching valve |
| CN103256417A (en) * | 2012-02-16 | 2013-08-21 | 浙江三花制冷集团有限公司 | Four-way reversing valve and refrigerating system |
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Application publication date: 20091230 Assignee: Wuhu three flower automatic control component Co., Ltd. Assignor: Sanhua Refrigeration Group Co., Ltd., Zhejang Contract record no.: 2013340000009 Denomination of invention: Valve seat, four-way reversing valve main valve using same and four-way reversing valve Granted publication date: 20110706 License type: Exclusive License Record date: 20130228 |
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Effective date of registration: 20170210 Address after: 312500 Zhejiang city of Shaoxing province Xinchang County Mei Zhu Zhen three flower Mei Zhu Industrial Park Administration Building Patentee after: Zhejiang three flower intelligent control Limited by Share Ltd Address before: 312500 Zhejiang County in Xinchang Province town of Liquan Patentee before: Sanhua Refrigeration Group Co., Ltd., Zhejang |
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