Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
In describing the invention it is to be understood that term " " center ", " on ", D score, "front", "rear", " left ",
The orientation of instruction such as " right ", " vertical ", " level ", " top ", " bottom ", " interior ", " outward " or position relationship are based on shown in the drawings
Orientation or position relationship, be for only for ease of description the present invention and simplify description, rather than instruction or hint indication device or
Element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Term " first ", " second " be only used for describe purpose, and it is not intended that instruction or hint relative importance or
The implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or implicit
Ground includes one or more this feature.In describing the invention, unless otherwise stated, " multiple " be meant that two or
Two or more.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or is integrally connected;Right
For those of ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood with concrete condition.
Referring to Fig. 2, the air-conditioner orifice union in the embodiment of the present invention, including:Main throttling arrangement 1 and auxiliary throttling dress
Put 2, main throttling arrangement 1 and auxiliary throttling arrangement 2 are connected in parallel in refrigerant circulation circuit, the entrance 21 of auxiliary throttling arrangement 2
Place is connected with valve 3, and valve 3 can adjust aperture, the pressure in refrigerant circulation circuit according to the pressure size in refrigerant circulation circuit
Power is bigger, and the aperture of valve 3 is bigger.
Because main throttling arrangement 1 and auxiliary throttling arrangement 2 are to be connected in parallel in refrigerant circulation circuit, and assist throttling
It is connected with valve 3, when ambient temperature changes, the pressure in refrigerant circulation circuit also can be therewith at the entrance 21 of device 2
Change, valve 3 can adjust aperture according to the pressure size in refrigerant circulation circuit, change and passed through by the coolant of orifice union
Amount, and then change the coolant quantity entering in vaporizer, meet the demand when external environment changes to coolant for the vaporizer, with
When, the change of valve 3 aperture can also adjust the pressure size in refrigerant circulation circuit, makes condenser be in holding all the time optimal
The pressure of condensation effect, thus, it is possible to make air-conditioner keep preferably refrigerating/heating ability in extraneous variation of ambient temperature.
Refrigerant circulation circuit pressure release is made by the aperture of control valve 3 it is also possible to make refrigerant circulation circuit long-time in the case of a high temperature
Operating pressure will not be exceeded, air-conditioner would not because power is too high frequent shutdown.Therefore, porch is provided with aperture adjustable valve
The auxiliary throttling arrangement 2 of door 3 is in parallel with main throttling arrangement 1, you can so that air-conditioner keeps relatively in extraneous variation of ambient temperature
Good refrigerating/heating ability, can make again air-conditioner will not because power is too high frequent shutdown.
Wherein, the structure of valve 3 is not unique, and such as valve 3 can be electromagnetic throttle valve, the entrance of electromagnetic throttle valve with
Refrigerant inlet 33 connects, and refrigerant inlet 33 is used for connecting with refrigerant circulation circuit, and the outlet of electromagnetic throttle valve is filled with auxiliary throttling
Put 2 entrance 21 to connect, also located at electronic pressure gage at refrigerant inlet 33, electronic pressure gage is connected with control unit, electricity
The pressure value of electromagnetic throttle valve entrance can be passed to control unit by sub- pressure gauge, and electronic pressure gage can be surveyed by control unit
Pressure value adjust electromagnetic throttle valve valve element 35 aperture, thus adjust by the uninterrupted of electromagnetic throttle valve coolant and
The outlet pressure of electromagnetic throttle valve.
In addition, valve 3 can also be following structure:As shown in Fig. 2 valve 3 includes valve body 31, in valve body 31, it is provided with valve pocket
32, valve body 31 is provided with the refrigerant inlet 33 connecting with valve pocket 32 and coolant first outlet 34, coolant first outlet 34 and auxiliary
The entrance 21 of throttling arrangement 2 connects, and refrigerant inlet 33 is used for connecting with refrigerant circulation circuit, is provided with valve element 35, valve in valve pocket 32
Core 35 is slidably matched with the inwall of valve pocket 32, and one end of valve element 35 is connected with return unit 36, and the other end is connected with refrigerant inlet 33,
Return unit 36 can apply the reset force contrary with the coolant flow direction in valve pocket 32 to valve element 35, when in refrigerant circulation circuit
When pressure is less than reset force, valve element 35 is located between coolant first outlet 34 and refrigerant inlet 33, and such valve element 35 prevents cold
Matchmaker enters into auxiliary throttling arrangement 2 from coolant first outlet 34, and valve 3 is closed;When the pressure in refrigerant circulation circuit
When power is more than reset force, valve element 35 slides in valve pocket 32 along the direction that coolant flows, and adjusts coolant with the change of pressure
The aperture of first outlet 34, thus adjust the size entering into cold medium flux in auxiliary throttling arrangement 2.Compare solenoid valve,
Valve 3 structure shown in Fig. 2 is simple, it is little to take up room, and need not increase electric-control system, reduces cost.
It should be noted that:It is provided with conduit 4, valve pocket 32 is connected with refrigerant circulation circuit by conduit 4 at refrigerant inlet 33
Logical, the size of conduit 4 internal diameter can be set according to the actual needs, and conduit 4 can be made of copper.
The connected mode with refrigerant circulation circuit of main throttling arrangement 1 is not also unique, the entrance 11 of such as main throttling arrangement 1
Can be directly accessed in refrigerant circulation circuit, in addition, main throttling arrangement 1 can also access in refrigerant circulation circuit by valve 3,
Specifically, as shown in Fig. 2 valve body 31 is provided with the coolant second outlet 37 connecting with valve pocket 32, coolant second outlet 37 and master
The entrance 11 of throttling arrangement 1 connects, and coolant second outlet 37 is located between coolant first outlet 34 and refrigerant inlet 33, works as coolant
When pressure in closed circuit is less than reset force, valve element 35 is located between coolant first outlet 34 and coolant second outlet 37, this
In the main throttling arrangement 1 that sample coolant will be entered by coolant second outlet 37.The entrance 11 comparing main throttling arrangement 1 can be straight
Access in refrigerant circulation circuit, main throttling arrangement 1 is accessed in refrigerant circulation circuit by valve 3, can make main throttling arrangement 1
It is integrated on valve 3 with auxiliary throttling arrangement 2, so make air-conditioner orifice union more compact structure, be easy to main throttling arrangement 1
Installation and fixation.
When the ambient temperature that air-conditioner uses rises, the temperature of the condenser in refrigerant circulation circuit also with
Rise, the pressure in coincidence circuit also rises therewith, when in loop, pressure is more than reset force, valve element 35 starts to slide to the left, and
Conducting coolant first outlet 34 (as shown in Figure 3), coolant enters into auxiliary throttling arrangement 2, auxiliary section from coolant first outlet 34
Stream device 2 performance throttling action in parallel together with main throttling arrangement 1, persistently rises with the pressure in loop, valve element 35 is continuous
Be moved to the left, until coolant first outlet 34 fully opens (as shown in Figure 4), now by orifice union cold medium flux
Greatly, the ability making the refrigerating/heating of air-conditioning reaches maximum;When the ambient temperature that air-conditioner uses declines, refrigerant circulation
The temperature of the condenser in loop also declines therewith, and the pressure in coincidence circuit also declines therewith, and valve element 35 slides to the right, gradually
Close coolant first outlet 34, make to reduce by assisting the cold medium flux of throttling arrangement 2, when the pressure in loop is less than reset force
When valve element 35 return to initial position, coolant no longer passes through to assist throttling arrangement 2, and now coolant only passes through from main throttling arrangement 1.
To the coolant rightabout movement of flowing and coolant is avoided to coordinate with valve pocket 32 from valve element 35 to limit valve element 35
The chamber section at return unit 36 place is passed into, as shown in Figure 2 it is preferable that valve pocket 32 includes first being interconnected in gap
Valve pocket section 321 and the second valve pocket section 322, the diameter with diameter greater than the second valve pocket section 322 of the first valve pocket section 321, coolant first
Outlet 34 is connected with the first valve pocket section 321, and coolant second outlet 37 is connected with the second valve pocket section 322, valve element 35 and the first valve pocket
Section 321 is slidably matched, and the first valve pocket section 321 and the second valve pocket section 322 junction are formed with step surface 323, when refrigerant circulation returns
When pressure in road is less than reset force, valve element 35 is leant with step surface 323.By the diameter of the first valve pocket section 321 is arranged
It is more than the diameter of the second valve pocket section 322, such first valve pocket section 321 and the second valve pocket section 322 junction will form step
Face 323, step surface 323, when the pressure in refrigerant circulation circuit is less than reset force, can limit valve element 35 and flow to coolant
Rightabout moves, and step surface 323 plays position-limiting action.Because valve element 35 is leant with step surface 323, which increase valve element
35 are just not easily accessed the first valve pocket section 321 at return unit 36 place with the contact area of valve pocket 32, coolant.
Wherein, the shape of step surface 323 end face near the second valve pocket section 322 with valve element 35 is not unique, such as step surface
323 can be plane, and valve element 35 forms cylindrical protrusions near the end face of the second valve pocket section 322, when in refrigerant circulation circuit
When pressure is less than reset force, cylindrical protrusions are fitted with step surface 323.In addition, as shown in Fig. 2 step surface 323 can also be
Conical step surface, valve element 35 forms conical protrusions 351, conical protrusions 351 and circle near the end face of the second valve pocket section 322
The taper of the conical surface is identical, when the pressure in refrigerant circulation circuit is less than reset force, conical protrusions 351 and conical step surface
Fit.Compare step surface 323 be plane, valve element 35 near the second valve pocket section 322 end face formed cylindrical protrusions scheme,
When conical protrusions 351 and conical step surface 323 cooperation, valve element 35 is bigger with the contact area of step surface 323, has preferably
Sealing, stops coolant from entering into the first valve pocket section 321 thus the pressure in refrigerant circulation circuit is less than during reset force.
The species of return unit 36 is not unique, and such as return unit 36 can be leather bag cylinder, one end of leather bag cylinder and valve
Core 35 connects, and the other end is connected with fixed block 38, and coolant first outlet 34 is located between fixed block 38 and refrigerant inlet 33, fixing
Block 38 is connected to the inwall of valve pocket 32.When the pressure in refrigerant circulation circuit is more than reset force, coolant promotes valve element 35 to slide,
Air in leather bag cylinder is compressed simultaneously, and when the pressure in refrigerant circulation circuit is less than reset force, air is compressed generation
Elastic force valve element 35 can be promoted to return to initial position.
In addition, as shown in Fig. 2 return unit 36 is alternatively spring, one end of spring is connected with valve element 35, and the other end is connected with
Fixed block 38, coolant first outlet 34 is located between fixed block 38 and refrigerant inlet 33, and fixed block 38 is connected to the interior of valve pocket 32
Wall, adjustable along the installation site of the direction of motion fixed block 38 of valve element 35, so pass through to adjust the installation site of fixed block 38, adjust
The decrement of section spring, makes the size of spring restoring force change, and then can be with the Opening pressure of adjusting spool 35.Compare leather bag gas
Cylinder, the structure of spring is simple, and reset force size is directly proportional with decrement, is more easy to the regulation with valve element 35 Opening pressure.
For the ease of adjusting the decrement of spring and the dismounting of valve element 35, as shown in Figure 2 it is preferable that fixed block 38 outer
Side wall is provided with external screw thread, and the inwall of valve pocket 32 is provided with female thread, and fixed block 38 is coordinated by screw thread with valve pocket 32.Due to fixed block
38 are coordinated by screw thread with valve pocket 32, so only need to screw, by fixed block 38 and valve pocket 32, the pressure that just can adjust spring
Contracting amount, and then change the Opening pressure of valve element 35, such regulative mode is simple to operate, easy to adjust;Due to valve element 35 and first
Valve pocket section 321 is slidably matched, the diameter with diameter greater than the second valve pocket section 322 of the first valve pocket section 321, and such valve element 35 can only be from
First valve pocket section 321 loads, and is detachably connected being set to screw thread between valve bottom and valve pocket 32, can facilitate the dismounting of valve element 35 more
Change, reduce maintenance cost.
In order that air-conditioner remains optimal refrigerating/heating ability in large temperature range it is preferable that auxiliary throttles
Device 2 is multiple, and on valve body 31, the glide direction along valve element 35 offers multiple coolant first outlets 34, and multiple coolant first go out
Mouth 34 is connected one to one with multiple auxiliary throttling arrangements 2.If only one of which assists throttling arrangement 2, when coupled logical
When coolant first outlet 34 fully opens, the pressure in refrigerant circulation circuit continues to rise, then this auxiliary throttling arrangement 2 does not just have
Pressure in method regulating loop and the flow entering in vaporizer, it can thus be appreciated that an auxiliary throttling arrangement 2 makes air-conditioner
Keep the temperature range of optimal refrigerating/heating ability limited, therefore, the number of auxiliary throttling arrangement 2 is set to multiple, multiple
Individual coolant first outlet 34 is gradually opened successively, and air-conditioner can be made to remain optimal refrigeration/system in large temperature range
Heat energy power.Wherein, the number of coolant first outlet 34 and connected auxiliary throttling arrangement 2 be 2,3 etc., here is not
Limit.
Wherein, auxiliary throttling arrangement 2 can be choke valve, is arranged with connecting tube 21 (as shown in Figure 2) outside choke valve, connects
One end of pipe 21 is connected with valve body 31, and the other end is connected in refrigerant circulation circuit;Auxiliary throttling arrangement 2 can also be capillary
Pipe, one end of connecting tube 21 is connected to coolant first outlet 34, and the other end is connected to one end of capillary tube, the other end of capillary tube
It is connected in refrigerant circulation circuit.In addition, main throttling arrangement 1 can also be choke valve or capillary tube, it is followed with valve body 31, coolant
The connected mode of loop back path is identical with auxiliary throttling arrangement 2, will not be described here.
On the other hand, as shown in figure 5, the embodiment of the present invention additionally provides a kind of air-conditioner, including refrigerant circulation circuit, cold
Matchmaker's closed circuit includes compressor 200, condenser 300, orifice union 100 and the vaporizer 400 being sequentially connected in series into loop, throttling
Assembly 100 is the orifice union 100 described in any of the above-described embodiment, main throttling arrangement 1 and auxiliary throttling in orifice union 100
The entrance 21 of device 2 is connected with condenser 300 respectively, and the outlet of main throttling arrangement 1 and auxiliary throttling arrangement 2 is all and vaporizer
400 connections.
Entrance 21 due to throttling arrangement 1 main in orifice union 100 and auxiliary throttling arrangement 2 is connected with condenser 300 respectively
Connect, the outlet of main throttling arrangement 1 and auxiliary throttling arrangement 2 is all connected with vaporizer 400, when the pressure in refrigerant circulation circuit with
When the temperature change in the external world and changing, the valve 3 of auxiliary throttling arrangement 2 porch can be according to pressure in refrigerant circulation circuit
Change, the aperture of control valve 3, change enter vaporizer 400 in cold medium flux, meanwhile, the change of valve 3 aperture also may be used
To adjust the pressure in refrigerant circulation circuit, so that condenser 300 is under the pressure keeping optimal condensation effect, so can make
Air-conditioner keeps preferably refrigerating/heating ability in extraneous variation of ambient temperature, in addition, by the tune of valve 3 aperture size
Section, can make the pressure in refrigerant circulation circuit not exceeded.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, all should contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by described scope of the claims.