CN106065958A - Fluid changing-over valve, the equipment with fluid changing-over valve and refrigerator - Google Patents

Abstract

The present invention provides switching state number and the fluid changing-over valve that ratio is bigger value of opening number and includes equipment and the refrigerator being designed to be able to realize being suitable for the fluid changing-over valve of the pattern of application apparatus.The fluid changing-over valve of the present invention includes: fluid supply unit；There is the valve seat of N number of opening；And valve body, it can relatively rotate relative to valve seat centered by valve body axle, and its valve body slides contact surface contacts with valve seat, and wherein, N is 4 or natural number more than 4, and valve body includes: can make the valve body groove that 2 openings open to each other；With valve body recess, it forms the circulating area that 1 opening can be made open relative to fluid supply unit, valve body can be along with opening and closing and the opening opening and closing to each other relatively rotating switch openings convection cell supply unit, opening for more than 1 in N number of opening, opening can be made open relative to fluid supply unit via circulating area, and the open and-shut mode to each other of the opening via valve body groove is switched to three state.

Description

Fluid changing-over valve, the equipment with fluid changing-over valve and refrigerator

Technical field

The present invention relates to fluid changing-over valve, the equipment with fluid changing-over valve and refrigerator.

Background technology

Background technology as the present invention, it is known that patent documentation 1,2.

Patent document 1 discloses that one can by an inflow entrance A and 4 connected entrances (port, Valve opening) connected state of B～E switch to the five-way valve of 5 kinds of states (0059,0061 section, figure 17,20,22 etc.).In patent documentation 1, valve body 80 swings and makes connected entrance B～E opening and closing (0099 section).In 4 connected entrance B～E, the connected entrance exposed from valve body slides contact surface 81 Connecting with inflow entrance A, connected entrance B～E of other more than 2 can be by connection recess 82 and connect.Such as, in second state of Figure 17, expose from valve body slides contact surface 81 Connected entrance B connect with inflow entrance A, connected entrance D and connected entrance E is by connecting recess 82 Connection.Similarly, in the third state of Figure 17, expose from valve body slides contact surface 81 Connected entrance B connects with inflow entrance A, and connected entrance D and connected entrance C is by connecting recess 82 even Logical.

Patent document 2 discloses that and a kind of each entrance valve opening 15 is arranged in centered by rotary shaft On first circumference 17 and the second circumference 18, make the pilot pressure pattern switching valve of hydraulic excavator The invention (summary) of miniaturization.Wherein, entrance valve opening 15 closes with the connection of entrance side opening 20 System, outlet spool valve 28 allow hand over the connected relation of outlet side opening 24 (0037,0043, 0045 section, Fig. 6～12 etc.).

Prior art literature

Patent documentation

Patent documentation 1: Japanese Unexamined Patent Publication 2014-211181 publication

Patent documentation 2: Japanese Unexamined Patent Publication 2008-82161 publication

Summary of the invention

Invention to solve the technical problem that

Fluid changing-over valve can be applied to various equipment.In order to improve setting of applicating fluid switching valve Standby design freedom, for example, it is desirable to the attainable status number of fluid changing-over valve switches with fluid The ratio of valve valve opening to be opened/closed number is bigger value.Additionally, it is also desirable to realization can be according to being answered The difference of equipment, the configuration of parts, the institute that select to be connected with each valve opening, inflow entrance are real The design of the preferred structure of existing switching state.

In patent documentation 1, when making certain valve opening connect with inflow entrance A, by connecting The pattern (pattern) of connected entrance B～E of recess 82 connection is less than 2 kinds.Although using 4 Individual valve opening is capable of 5 kinds of states, but also deposits status number is with the ratio of valve opening number on this point In room for improvement.

In patent documentation 2 open by the entrance valve opening being arranged on the first circumference be arranged in Structure that the entrance valve opening being different from the second circumference of the first circumference is connected, use recess 25 etc. Increase the technological thought of switch mode.

The technological means of solution problem

In view of above situation, the fluid changing-over valve of the present invention includes: fluid supply unit；There is N The valve seat of individual opening；And valve body, this valve body can be relative to this valve seat phase centered by valve body axle To rotation, and valve body slides contact surface contacts with described valve seat, the feature of described fluid changing-over valve It is: N is 4 or natural number more than 4, and described valve body includes: 2 can be made above-mentioned to open The valve body groove that mouth is open to each other；With valve body recess, this valve body recess is formed and can make on 1 Stating the circulating area that opening is open to above-mentioned fluid supply unit, above-mentioned valve body can be relative with above-mentioned Rotate and switch above-mentioned opening accordingly to the opening and closing of above-mentioned fluid supply unit and above-mentioned opening to each other Opening and closing, about the opening of more than 1 in above-mentioned N number of opening, it is possible to make this opening via Above-mentioned circulating area is open to above-mentioned fluid supply unit, and above-mentioned by via above-mentioned valve body groove Opening open and-shut mode to each other switches to three state.

Accompanying drawing explanation

Fig. 1 is the axonometric chart of the outward appearance of the fluid changing-over valve representing the first embodiment.

Fig. 2 is the F-F sectional view of Fig. 1.

Fig. 3 assumes that the fluid of the first embodiment when pulling down stator case and valve casing and have an X-rayed is cut Change the axonometric chart of valve.

Fig. 4 (a) be the M direction of Fig. 1 to regarding top view, Fig. 4 (b) is K-K cross section Figure.

Fig. 5 is structure vertical representing the rotor pinion of the first embodiment, idle pulley and valve body Body figure.

Fig. 6 is opening and the front elevation of valve body slides contact surface of the first embodiment.

Fig. 7 is the switching state of the fluid changing-over valve that opening number is 4 representing the first embodiment Figure.

Fig. 8 is the switching of the fluid changing-over valve that opening number is 5 to 6 representing the first embodiment The figure of state.

Fig. 9 is configuration and the valve body slides of the opening of the fluid changing-over valve representing the second embodiment The explanatory diagram of the shape of contact surface.

Figure 10 is the rotation of the valve body of the fluid changing-over valve representing the second embodiment and opening of opening The explanatory diagram of closed state.

Figure 11 is configuration and the valve body slides of the opening of the fluid changing-over valve representing the 3rd embodiment The explanatory diagram of the shape of contact surface.

Figure 12 is the rotation of valve body and the opening of opening of the fluid changing-over valve representing the 3rd embodiment The explanatory diagram of closed state.

Figure 13 is configuration and the valve body slides of the opening of the fluid changing-over valve representing the 4th embodiment The explanatory diagram of the shape of contact surface.

Figure 14 is the rotation of valve body and the opening of opening of the fluid changing-over valve representing the 4th embodiment The explanatory diagram of closed state.

Figure 15 is to be labelled with fluid circuit on the front appearance figure of the refrigerator of the 5th embodiment The figure of summary content.

Figure 16 is the loop diagram of the fluid circuit of the 5th embodiment.

Figure 17 is the figure of the first mode of the fluid circuit representing the 5th embodiment.

Figure 18 is the figure of the second pattern of the fluid circuit representing the 5th embodiment.

Figure 19 is the figure of the 3rd pattern of the fluid circuit representing the 5th embodiment.

Figure 20 is the figure of the fourth mode of the fluid circuit representing the 5th embodiment.

Figure 21 is the figure of the 5th pattern of the fluid circuit representing the 5th embodiment.

Figure 22 is the figure of the 6th pattern of the fluid circuit representing the 5th embodiment.

Figure 23 is the figure of the 7th pattern of the fluid circuit representing the 5th embodiment.

Figure 24 is each of each state and the fluid circuit of the fluid changing-over valve representing the 5th embodiment The figure of the corresponding situation between pattern.

Figure 25 is to say for applying in the first embodiment in the fluid circuit of the 5th embodiment The feelings of the fluid changing-over valve of explanation in the situation of bright fluid changing-over valve and application the 4th embodiment Condition, represents the figure of the pattern realized respectively.

Detailed description of the invention

Following while referring to the drawings while embodiment each to the present invention is described in detail.For Same component parts marks same reference and omits identical explanation.

" the first embodiment "

According to present embodiment, using the teaching of the invention it is possible to provide improve the stream of the ratio of switching state number and opening number Body switching valve.Particularly, it is possible to convection cell supply unit opens certain opening and utilizes valve body groove Switch to three state.

<structure of fluid changing-over valve 60 and action>

Structure and the action of convection cell switching valve 60 illustrate.First, as having N number of opening One example of the fluid changing-over valve 60 of mouth, illustrates the five-way valve being equivalent to N=4.

Fig. 1 is the axonometric chart of the outward appearance of the fluid changing-over valve 60 representing present embodiment.Fig. 2 is The F-F sectional view of Fig. 1.Fig. 3 is to pull down stator case 61 and valve casing 66 from fluid changing-over valve 60 The axonometric chart of the fluid changing-over valve 60 when having an X-rayed.Fig. 4 (a) be pulled down valve casing 66, The M of Fig. 1 when valve body 80 and idle pulley 79 is to depending on (front is seen) figure, and Fig. 4 (b) is K-K Sectional view.Fig. 5 is the solid of the structure representing rotor pinion 75, idle pulley 79 and valve body 80 Figure.

[summary of fluid changing-over valve 60]

In the inside of the stator case 61 of the exterior tubular constituting fluid changing-over valve 60, it is formed It is wound with the tubular stator 62 of coil.The connector case protruded laterally it is formed with in stator case 61 63.Adapter 65 it is provided with in connector case 63.Adapter 65 has from stator 62 The distribution of coil be connected to the connection pin 64 of external drive circuit.

Rotor 70 is the rotor of the motor with magnet.When connecting pin 64 and drive electricity Road connects and during to the coil electricity of stator 62, stator 62 produces magnetic field, and magnetic field is via valve casing 66 magnets putting on rotor 70, rotor 70 rotates around valve body axle 71.This motor can structure Become stepping motor.

The valve casing 66 having bottom tube-like covers valve body 80, and suppression is from an example as fluid supply unit The fluid of the inflow entrance A supply of son is diffused into the outside of fluid changing-over valve 60.Valve casing 66 upper Side is chimeric with the inner peripheral portion of stator 62.In Fig. 2, the opening in the downside of valve casing 66 engages There is seat board 67.

Seat board 67 includes the plate of thickness 3 concentric circles different from each other, is integrally formed with First seat board portion 67a, diameter are less than the first seat board portion 67a and the second thicker seat board portion 67b, diameter are more than the first seat board portion 67a and the 3rd relatively thin seat board portion 67c.

Connect at seat board 67 and have inflow pipe 68 and 4 communicating pipe 69 of negotiable fluid.The One seat board portion 67a have inflow entrance A, the second seat board portion 67b have 4 opening B_1, B_2, B_3 and B_4.The fluid of flowing in flowing into pipe 68 is supplied to valve casing by inflow entrance A 66 is internal.4 opening B_1～B_4 each make fluid be passed to 4 communicating pipe 69b～69e Each in.Inflow entrance A and opening B_1～B_4 inside with valve casing 66 respectively connects.Separately Outward, the part of the seat board 67 abutted with valve body 80 is grinding polished surface 90.

Valve body axle 71 is rotor 70 and the center of rotation of valve body 80.When rotor 70 rotates, Revolving force is via the rotor pinion 75 being connected with rotor 70, valve body axle 71, idle pulley 79, lazy Wheel shaft 78 is transferred to valve body 80.So, valve body 80 rotates relative to seat board 67.At valve seat The center of plate 67 is formed with the rotor shaft hatch with the end 72 for being fitted together to valve body axle 71.

Being provided around of rotary shaft in the bottom of rotor pinion 75 is formed as turning of protuberance Sub-drive division front end 76, this rotor drive division front end 76 is positioned in the upper surface of valve body 80.Turn The little gear 75 of son and valve body 80 are configured to can be respectively via rotor drive shaft hole 77 and valve body axis hole 85 rotate freely around shared central shaft i.e. valve body axle 71.

The stopper 84 protruded from the periphery of valve body gear 83 it is formed with at valve body 80.Work as valve body Idle pulley stopper during 80 rotation predetermined angular, on the downside of stopper 84 and inertia little gear 79a 79c abuts, the rotation of limiting valve body 80.

It addition, stopper 84 is configured so that the rotating angle of valve body 80 is more than aftermentioned The each state of fluid changing-over valve 60 switching action required for angle.

[inflow entrance A, opening B_1～B_4]

Opening B_1～B_4 is separately positioned on the position of roughly equal distance from valve body axle 71. The order that opening B_1～B_4 presses B_1, B_2, B_3, B_4 in a circumferential direction is clockwise Arrangement, opening B_1 with B_4 is the most adjacent.Further, each opening B_1～B_4 With roughly equal angle configurations centered by valve body axle 71.Such as, the fluid that opening is N number of is cut Change valve 60 to be configured to, a part for each opening and the void being inscribed within centered by valve body axle 71 Each summit of the n-shaped intending circle is overlapping.

It addition, opening B_1～B_4 split shed B_1 is closest to inflow entrance A.Inflow entrance A every Opening B_1 and be positioned at the opposition side of valve body axle 71.Idler shaft 78 is arranged on across valve body axle 71 The opposition side of inflow entrance A.It addition, the diameter of each opening B_1～B_4 is not particularly restricted, As long as a part for each opening is positioned at above-mentioned vertex position, can be made them the most substantially Equal.

[valve body slides contact surface 81]

Fig. 6 is opening B_1～B_4 and the front elevation of valve body slides contact surface 81.As valve body The valve body slides contact surface 81 in one face of 80 is smart with the grinding being provided with opening B_1～B_4 While machined surface 90 contact, rotate centered by valve body axle 71.Valve body 80 is relative to valve seat Plate 67 rotates such that it is able to opening B_1～B_4 being arranged at seat board 67 is carried out opening and closing. It addition, regardless of the rotation of valve body 80, inflow entrance A can supply fluid to valve casing 66 is internal.

[fluid output 82]

Valve body slides contact surface 81 is provided with fluid output 82.Fluid output 82 includes Valve body groove 82a (the first valve body groove), valve body groove 82b (the second valve body groove) and valve body recess 82c. Hereinafter will be positioned at counterclockwise when valve body axle 71 (valve body axis hole 85) observes valve body recess 82c The valve body groove 82 of side is referred to as valve body groove 82a, and the valve body groove 82 being positioned at side clockwise is referred to as valve body groove 82b。

Valve body groove 82a, 82b are disposed on the groove of valve body slides contact surface 81, in Fig. 6 institute example In the front elevation of the valve body slides contact surface 81 shown, at its opening weight with 2 or more than 3 Time folded, fluid can move between these openings.

2 the most adjacent openings have substantially θ respectively centered by valve body axle 71 The angle of a=(360/N) °.This illustrates as a example by sentencing N=4, therefore θ a=90 °.

Valve body groove 82a, 82b can be arranged to, each opening B_1～B_4 be positioned at above-mentioned In imaginary circles, 2 points generally away from θ a are connected.Such as, the void being positioned at each opening Intending on circle, example as shown in Figure 6 is such, it is possible to be arranged to continue the circular shape of substantially θ a. Below by valve body groove 82a, 82b described above by 2 points leaving predetermined angular in imaginary circles Connect this situation to be referred to as circle " intercepting ".It addition, valve body groove 82a, 82b can also be arranged Become to intercept the scope bigger than substantially θ a.

Valve body recess 82c is that the periphery of valve body slides contact surface 81 is more inside by footpath than above-mentioned imaginary circles The part of side.Valve body recess 82c makes opening B_1～B_4 reveal respectively with the rotation of valve body 80 Internal for valve casing 66.It is supplied to the fluid within valve casing 66 from inflow entrance A, is flowed into dew For in opening B_1～B_4 within valve casing 66.That is, valve body recess 82c makes from inflow entrance The fluid of A supply is passed in the opening exposed.

In the valve body 80 herein illustrated, constitute by the circumference side by valve body recess 82c That 2 straight lines of each and valve body axle 71 of 2 ends upwards clip and across valve body axle The region C (with reference to Fig. 6) of 71 opposition sides being positioned at valve body recess 82c, is being contained in this region In a part for above-mentioned imaginary circles in C, comprise a part for valve body slides contact surface 81.That is, Above-mentioned imaginary circles in being contained in above-mentioned zone C at least some of in, be not provided with valve body Groove 82a, 82b.

[opening of opening and closing]

Below by valve body groove 82a, 82b and the state of the superposition of end gap of 2 or more than 3, or The state that valve body recess 82c and superposition of end gap make opening be exposed within valve casing 66 is referred to as opening Open.Further, by valve body groove 82a, 82b and the state of the superposition of end gap of less than 1, or open The mouth state overlapping with valve body slides contact surface 81 is referred to as closure of openings.

That is, the state that opening is open refers to fluid and can open at certain via fluid output 82 The state of circulation between mouth and other opening or inflow entrance A.And what the state of closure of openings referred to Be valve body slides contact surface 81, valve body groove 82a, 82b suppression fluid certain opening with other The state of circulation between opening or inflow entrance A.

The number of the opening that valve body groove 82a, 82b open simultaneously with the equipment applied difference and Exist difference, but described later as the refrigerator of an example of equipment in be preferably amount to 2. That is, 1 inflow entrance become for valve body groove 82a, 82b, another 1 becomes flow export, because of This cold-producing medium is uniformly across valve body groove 82a, 82b.In the case of for more than 3, such as 1 is in the case of inflow entrance 2 is flow export, and cold-producing medium is diverted to 2 flow exports and flows out, Therefore the refrigerant flow flowed out from each flow export reduces, and the distribution of refrigerant flow with The size of the flow path resistance corresponding with flow export and change, therefore refrigerant flow will not keep Necessarily.

It addition, in the case of for refrigerator, the number of the opening that valve body recess 82c opens simultaneously Similarly it is preferably 1.When for more than 2, the refrigerant flow at each open flow drops Low and cause refrigerating capacity to reduce, and the basic of distribution of refrigerant flow is with multiple openings respectively The size of corresponding flow path resistance and change, therefore, it is difficult to stably obtain refrigerating capacity.

But, including refrigerator, it is also possible to according to the design of equipment and by valve body groove 82a, 82b Open the opening of more than 3 simultaneously, or opened more than 2 open by valve body recess 82c simultaneously Mouthful.

<status number of fluid changing-over valve 60>

Fig. 7 is the five-way of the fluid changing-over valve 60 that number N is 4 representing and being equivalent to opening B The figure of the switching state of valve.The fluid changing-over valve 60 being illustrated with reference to Fig. 6 is in the figure 7 Be equivalent to five-way valve 5-1.In the figure 7, for each because of valve body recess 82c opening of exposing Mouthful, the combination of the opening that valve body groove 82a, 82b are opened exists 3 kinds, therefore enters by every 3 kinds Row divides and classifies as the most up shown numerical value " 1 "～" 4 ".

Fig. 8 is the switching shape of the fluid changing-over valve that number N is 5 and 6 60 representing opening B The figure of state.In fig. 8, the opening B_3 that illustrate only in opening B is opened by valve body recess 82c The switching state put, for other (N-1) individual opening by valve body recess 82c open in the case of, Position owing to being only opening is different and to illustrate be to repeat, for avoid this situation and no longer Illustrate.Being and above-mentioned five-way valve same consideration mode, therefore those skilled in the art should energy Enough understanding.

First, for illustrate valve in five-way valve 5-1, six-way valve 6-1,6-2, seven lead to valve 7-1, 7-2 illustrates.Valve body recess 82c can make opening relative to inflow for each opening Under the state that mouth A is open, the combination to the opening that valve body groove 82a, 82b are opened carries out 3 kinds Switching.

Herein, for convenience of description, certain opening B_i is overlapped in the angle of valve body recess 82c (in the present embodiment, it is positioned at valve body recess 82c for certain opening B_i during degree scope central During the circular arc intercepted central) state be referred to as initial point state.As initial point state, such as Can enumerate in the state illustrated in Fig. 6, the most up numerical value " 1 " of Fig. 7～" 4 " point With the angle shown in " valve body angle " row be not-θ a, 0 ,+θ a ,+2 θ a are corresponding in turn to State corresponding with the most up shown angle 0 in state and Fig. 8.This is to open about this The first switching state of mouth B_i.Now, valve body groove 82a, 82b each open with less than 2 Salty folded.

Below for valve body 80 relative to the rotation of seat board 67, make clockwise rotation for just, Rotation counterclockwise is negative.It addition, the angle making the circular arc that valve body recess 82c intercepted is 2 ×θp.Now, θ p can be set as that the angular range of opening is (such as by valve body axis hole 85 And the 2 piece straight line angulations tangent with opening B_1) more than 1 times.It addition, θ p Can also be such that the value that 2 × θ p=θ a or 2 × θ p ＞ θ a sets up.

When valve body 80 rotates+θ p from initial point state, the one in valve body groove 82a, 82b With 2 superposition of end gaps.This is the second switching state about this opening B_i.When valve body 80 When rotating-θ p from initial point state, the another one in valve body groove 82a, 82b and 2 opening weights Folded.This is the third switching state about this opening B_i.

Same switching state can realize for each opening, the fluid switching therefore illustrated In valve 60, five-way valve 5-1,5-2, six-way valve 6-1,6-2, seven lead to valve 7-1,7-2 can be real The switching state of 3 times of existing opening number N.

On the other hand, in the fluid changing-over valve 60 of example, six-way valve 6-3 and seven leads to valve 7-3 quilt Be designed to 2 valve bodies groove 82a, 82b the most simultaneously with 2 superposition of end gaps.In the case of Gai, During the first switching state, valve body groove 82a, 82b each with 2 superposition of end gaps.The second is cut Changing under state and the third switching state, it is identical that valve body groove 82a, 82b open combination to opening, Opening is all closed.Thus, as example in Fig. 8, six-way valve 6-3 and seven leads to 7-3 pair, valve It is capable of 2 kinds of switching states in each opening.I.e., it is possible to realize 2 times of opening number N Switching state.

It addition, in the fluid changing-over valve 60 of example, the valve body groove 82 of five-way valve 5-2 is 1, This valve body groove 82 is formed so that the angular range of substantially 2 × θ a intercepts above-mentioned imaginary circles.These feelings Under condition also in the same manner as five-way valve 5-1 etc., it is possible to realize the switching state of 3 times of opening number. When the length of valve body groove 82 is longer, in valve body groove 82, the pressure of the fluid of circulation produces and makes Valve body 80 is lifted off a seat the power of plate 67.Therefore, when valve body groove 82 is 2, easily shorten The length of valve body groove 82, the most preferred.Additionally, when valve body groove 82 is 2, hold Easily there is the structure of the middle explanations such as aftermentioned second embodiment.

[summary of the first embodiment]

According to present embodiment, in the same manner as the five-way valve as an example explanation, at valve body Recess 82c make certain opening B_i (i=1,2 ..., N) open relative to inflow entrance A Under state, the open state of valve body groove 82a, 82b allows hand over as three state.I.e., it is possible to Offer maximum can realize the fluid changing-over valve of the switching state of 3 times of opening number (valve opening number). Opening number is not particularly restricted, if be 4 (five-way valves) or 5 (six-way valve) with Upper.That is, according to present embodiment, using the teaching of the invention it is possible to provide attainable switching state number is can Carry out (3 × N) and plant (N+1) logical valve of switching, opening number N >=4.It addition, as above institute State, it is also possible to providing switching state number is that (2 × N) plants, 2 valve body grooves each can be simultaneously The fluid changing-over valve of open 2 openings (4 altogether).

" the second embodiment "

Following description second embodiment of the invention.Outside the structure of present embodiment is divided by lower point Can be identical with the first embodiment.

The difference of the equipment according to applicating fluid switching valve, compared to providing in the first embodiment The fluid changing-over valve realizing whole switching state illustrated, it is provided that part switching shape can be omitted The fluid changing-over valve of state is more highly preferred to sometimes.According to present embodiment, fluid changing-over valve is being answered In the case of in equipment etc., the design side of fluid changing-over valve corresponding with its purposes or function Method can become clear and definite with the structure etc. of the fluid changing-over valve applying this method for designing.Such as can Following fluid changing-over valve 60 is enough provided: for N number of opening B_i (i=1,2 ..., N) in 1 or 2 or the i of more than 3, at opening B_i because of valve body recess 82c relative to stream Under the state that entrance A is open, it is possible to the open state of valve body groove 82a, 82b is switched to 3 kinds State, and for other opening, it is possible to the open state of valve body groove 82a, 82b is switched to 2 kinds or a kind of state.

In present embodiment, as an example of (N+1) logical valve, the five-way valve to N=4 Illustrate.In the fluid changing-over valve 60 of present embodiment, switching state is at each valve body 80 Change when rotating stepping rotational angle θ p relative to seat board 67.In present embodiment right The example of θ p=45 illustrates.

[virtual circumference making configuration opening is multiple]

Fig. 9 is configuration and the valve body slides contact surface of opening B_1～B_4 representing present embodiment The front elevation of the valve body slides contact surface 81 of the structure of 81.For making explanation it can be readily appreciated that Fig. 9 (a) In valve body slides contact surface 81 is marked hacures, in Fig. 9 (b), convection cell throughput 82 is marked Note hacures.It addition, in Fig. 9 (b), illustrate valve body 80 often relative to seat board 67 The position of each opening B_1～B_4 during rotation stepping rotational angle θ p.And, at Fig. 9 (b) In depict the 3 virtual straight lines intersected each other at valve body axle 71, each adjacent 2 are straight Line forms the angle of θ p=45 °.

Opening B_1, B_3 are arranged on roughly equal distance d2 (peripheral radius) from valve body axle 71 Position.Opening B_2, B_4 are arranged on roughly equal distance d1 (inner circumferential from valve body axle 71 Radius) position.Wherein, d2 ＞ d1.Below by the radius d2 centered by valve body axle 71 Circle be referred to as periphery circle, the circle of radius d1 is referred to as inner circumferential circle.It addition, θ a can be θ p Substantially integral multiple, be preferably substantially 2 times or substantially 3 times.

Below for convenience of description, the opening B_3 shown in Fig. 9 (a) is positioned at valve body recess 82c The state of the circular arc central authorities of the periphery circle intercepted is referred to as initial point state (rotational angle θ=0 °). Shown in valve body recess 82c such as Fig. 9 (b), intercept periphery circle with the scope of θ 1=2 × θ p=90 ° Circular arc.

Each opening B_1～B_N (N=4) presses B_1, B_2, B_3, B_4 in a circumferential direction Order arranged clockwise, the circumference that the most adjacent opening is positioned at is different from each other. In present embodiment, the opening B_1 respectively the most adjacent with opening B_2, the B_4 being positioned on inner circumferential circle, B_3, is positioned at as on the periphery circle of the circle different from inner circumferential circle.Similarly, be positioned at periphery circle On respectively the most adjacent opening B_2, the B_4 of opening B_1, B_3, be positioned at as with periphery circle not On the inner circumferential circle of same circle.

[valve body groove 82a, 82b]

Valve body groove 82a, 82b can open the most adjacent 2 opening and make stream Body can circulate.The angle of the circular arc that valve body groove 82a is intercepted and valve body groove 82b are intercepted The angle of circular arc is respectively more than θ a.Such as, the example as shown in Fig. 9 (b), valve 2 ends of body groove 82a separate θ 4=2 × θ p=more than θ a, similarly, valve body groove 82b 2 ends separate θ 5=2 × θ p=more than θ a.

In the front elevation of valve body slides contact surface 81, valve body groove 82a, 82b can be formed as About angle 2 decile that valve body recess 82c is intercepted and by the straight line of valve body axle 71 each other Substantially symmetric shape.This straight line is expressed as in fig .9 by opening B_1's and opening B_3 Virtual straight line.Herein, valve body groove 82a, 82b " substantially symmetric shape " each other refer to If it is symmetrical in the region overlapping with virtual 2 circumference being configured with opening.Valve body Recess 82c is the most also same.

Valve body groove 82a includes the circulating area S3 intercepting inner circumferential circle with the scope of angle, θ 4, and It is connected with circulating area S3 and extends to the circulating area S4 on the circumference of periphery circle.

Circulating area S3 intercepts the circular arc of θ 4=θ a=90 ° or bigger.It addition, circulating area S3 can be shaped generally as circular shape.

Circulating area S4 is arranged in the end of circulating area S3 one away from valve body recess 82c Side.Circulating area S4 can be the most parallel with what inner circumferential circle or periphery were justified.It addition, circulation The radical length of region S4 is (d2-d1) or longer.

Valve body groove 82b includes the circulating area S5 intercepting inner circumferential circle with the scope of angle, θ 5, and It is connected with circulating area S5 and extends to the circulating area S6 on the circumference of periphery circle.

Circulating area S5 intercepts the circular arc of θ 5=θ a=90 ° or bigger.It addition, circulating area S5 can be shaped generally as circular shape.

Circulating area S6 is arranged in the end of circulating area S5 one away from valve body recess 82c Side.Circulating area S6 can be the most parallel with what inner circumferential circle or periphery were justified.It addition, circulation The radical length of region S6 is (d2-d1) or longer.

Additionally, the angle that the periphery that circulating area S4, S6 are intercepted is justified can be with θ 0 described later Identical, it is possible to for can be with the substantially overall overlapping angle of opening B_1, B_3.

[valve body recess 82c]

By valve body 80 relative to the rotation of seat board 69, the circulating area S1 of fluid communication, S2 rotates around valve body axle 79 together with valve body recess 82c.Hereinafter valve body recess 82c is described as Including circulating area S1, S2.Valve body recess 82c can be formed as, at valve body slides contact surface About by the central authorities of valve body recess 82c and the above-mentioned straight line of valve body axle 71 in the front elevation of 81 Substantially symmetric shape.

Valve body recess 82c includes the Circulation Area intercepting periphery circle with the scope of angle, θ 1=2 × θ p Territory S1, is connected with the center side being positioned at circulating area S1 and with circulating area S1, with angle, θ The scope of 0 intercepts the circulating area S2 of inner circumferential circle.Circulating area S1 includes than the periphery intercepted The circular arc of circle is more by the region of radial outside.Circulating area S2 preferably includes passing through in a part The central authorities of the periphery circle that circulating area S1 is intercepted and the straight line of valve body axis hole 85.

Can circulate among circulating area S1 and circulating area S2 from the fluid of inflow entrance A supply. Therefore, when opening B_i is exposed to inside valve casing 66 because of overlapping with circulating area S1, S2, This opening B_i is open to inflow entrance A.That is, the fluid supplied from inflow entrance A is flowed into this and opens Mouthful.This state description is also that opening is overlapping with valve body recess 82c by this specification.

θ 1=(2 × θ p) in present embodiment but it also may for the value bigger than this.It addition, θ 0 is more than 0 ° and less than θ 1.More specifically, the lower limit of θ 0 can be can be with opening The substantially overall overlapping angle of B_2, B_4.It addition, be less than θ 1 by the upper limit making θ 0, Angular range overlapping from valve body recess 82c for opening B_2, the B_4 on inner circumferential circle can be made different Opening B_1, B_3 angular range overlapping with valve body recess 82c on the circle of periphery.Therefore, For opening B_2, B_4 on inner circumferential circle, it is possible to reduce and make valve body 80 attainable when rotating Utilize the switching state number of valve body groove 82a, 82b.This point will the most additionally describe.By This, it is possible to according to the purposes of the equipment that fluid changing-over valve 60 is applied to, omit fluid circuit institute A part for the pattern realized.

[distribution of circulating area]

The portion different from the end being connected to circulating area S3, S5 in circulating area S4, S6 Point, it is positioned at the angle of circular arc in circulating area S1, S2 of valve body recess 82c, that intercepted On the circumference of the bigger side residing for circulating area S1.

It addition, circulating area S3, S5 are positioned in circulating area S1, S2 of valve body recess 82c , on the circumference of the side residing for circulating area S2 that the angle of the circular arc intercepted is less.That is, The part such as intercepting 2 points separating θ a on circle in valve body groove 82a, 82b is positioned at stream On the circumference of logical side residing for the S2 of region.

[spacer portion 94]

Each and valve body slides contact surface is there is between valve body recess 82c at valve body groove 82a, 82b The part of 81.Call it as spacer portion 94.

More specifically, valve body groove 82a, 82b respective valve body recess 82c side end or , there is a part of circulating area S1 in the radial outside near end, at valve body groove 82a, 82b , there is circulating area S2 in the circumferencial direction side of the end of respective valve body recess 82c side.It is positioned at Part between end and the radial direction of circulating area S1 of this valve body groove 82a, 82b or this valve body The valve body slides of the part between end and the circumferencial direction of circulating area S2 of groove 82a, 82b Contact surface 81 is spacer portion 94.

Utilize spacer portion 94 can suppress in valve body groove 82a or valve body groove 82b the fluid of flowing because of Self pressure and cross spacer portion 94 and leak in valve body recess 82c.The model of spacer portion 94 Enclose the biggest more that fluid can be suppressed efficiently leakage, the most preferred.

[opening interval diametrically]

Be configured with the difference [2 × (d2-d1)] of the diameter of 2 circumference of opening more than opening B_1～ The diameter of B_4.It addition, each opening B_1～B_4 is configured to, and in opening B_1, B_3 All tangent virtual diameter of a circles are more than the straight of the imaginary circles tangent with the periphery of opening B_2, B_4 Footpath.By configuring opening B_1～B_4 like this, it is possible to the circulating area of suppression inner circumferential circle side S2, S3 and S5 are overlapping with opening B_1, B_3 of circle side, periphery, and can suppress periphery circle S1, S4 and S6 of side is overlapping with opening B_2, B_4 of inner circumferential circle side.

[status number of fluid changing-over valve]

Figure 10 is the figure of the 8 kinds of states representing that the fluid changing-over valve 60 of present embodiment realized. In fluid changing-over valve 60, as it has been described above, opening B_2, the B_4 on inner circumferential circle and valve body recess Angular range overlapping for 82c is less, therefore makes opening B_2, B_4 be respectively relative to inflow entrance A The combination of the switching state under conditions of opening is reduced to 1 from 3 of the first embodiment, A part can be reduced.That is, the five-way valve as an example of fluid changing-over valve 60 is realized Status number less by 4 than 12.

The opening below opened by valve body recess 82c, to the inflow entrance A in each state with open The open state of mouth B_1～B_4 illustrates.

((4) initial point state)

In the initial point state (the 4th state) of angle of rotation θ=0 °, opening B_3 is recessed because of valve body Portion 82c and expose from valve body 80, be exposed to valve casing 66 internal.Therefore, flow into pipe 68 and connect Siphunculus 69d connects with opening B_3 through inflow entrance A, valve casing 66, and fluid can circulate.Opening B_1, B_2 and B_4 close, with other opening and inflow entrance A fluid circulation to each other It is suppressed.

Therefore, if such as including flowing into following of pipe 68 and communicating pipe 69d for being formed having In the equipment of the fluid circuit of ring, applicating fluid switching valve 60, then be capable of one for this equipment Individual pattern.

((5) the 5th state)

5th state is that valve body 80 have rotated substantially+θ relative to seat board 69 from initial point state The state of p.That is, rotational angle θ is substantially+θ p=45 °.

In the 5th state, opening B_3 is exposed to inside valve casing 66 because of valve body recess 82c. Further, opening B_1, B_4 is open by valve body groove 82b.Therefore, fluid can be in communicating pipe Circulate between 69b and 69e.

Therefore, if such as applicating fluid switching valve 60 in the equipment with following fluid circuit, This fluid circuit is connected with the one in communicating pipe 69b and communicating pipe 69e communicating pipe 69d and Another one is connected with flowing into pipe 68, then be capable of a pattern for this equipment.Opening B_2 Close, be suppressed with other opening and the circulation of inflow entrance A fluid to each other.

((3) third state)

The third state is that valve body 80 have rotated substantially-θ p relative to seat board 69 from initial point state State.

In the third state, opening B_3 is exposed to inside valve casing 66 because of valve body recess 82c. Further, opening B_1, B_2 is open by valve body groove 82a.Therefore, fluid can be in communicating pipe Circulate between 69b and 69c.

Therefore, if such as applicating fluid switching valve 60 in the equipment with following fluid circuit, This fluid circuit is connected with the one in communicating pipe 69b and communicating pipe 69c communicating pipe 69d and Another one is connected with flowing into pipe 68, then be capable of a pattern for this equipment.Opening B_4 Close, be suppressed with other opening and the circulation of inflow entrance A fluid to each other.

((8) the 8th state)

In the 8th state that rotational angle θ is substantially+4 × θ p=-4 × θ p=180 °, opening B_1 is exposed to inside valve casing 66 because of valve body recess 82c.Opening B_2, B_3 and B_4 seal Close, be suppressed with other opening and the circulation of inflow entrance A fluid to each other.

((1) first state)

First state be rotational angle θ be the state of substantially-3 × θ p=-135 °.

In the first state, opening B_1 is exposed to inside valve casing 66 because of valve body recess 82c. Further, opening B_2, B_3 is open by valve body groove 82b.Opening B_4 close, with other The circulation of opening and inflow entrance A fluid to each other is suppressed.

((7) the 7th state)

7th state be rotational angle θ be the state of substantially+3 × θ p=+135 °.

In the 7th state, opening B_1 is exposed to inside valve casing 66 because of valve body recess 82c. Further, opening B_3, B_4 is open by valve body groove 82a.Opening B_2 close, with other The circulation of opening and inflow entrance A fluid to each other is suppressed.

((6) the 6th state)

6th state be rotational angle θ be the state of substantially+2 × θ p=+90 °.

In the 6th state, opening B_4 is exposed to inside valve casing 66 because of valve body recess 82c. Opening B_1, B_2 and B_3 close, with other opening and inflow entrance A fluid to each other Circulation be suppressed.

((2) second state)

Second state be rotational angle θ be the state of substantially-2 × θ p=-90 °.

In the second state, opening B_2 is exposed to inside valve casing 66 because of valve body recess 82c.

Opening B_1, B_3 and B_4 close, with other opening and inflow entrance A to each other The circulation of fluid is suppressed.

[status number corresponding with each opening]

As is noted above, the fluid changing-over valve 60 of present embodiment opening B_1, B_3 meets the condition exposed because of valve body recess 82c from valve body 80, and to allow hand over be 3 The state of kind.On the other hand, opening B_2, B_4 is only capable of and realizes a kind of state.Below by opening The such opening being capable of three state of B_1, B_3 is referred to as non degenerate mouth, will be capable of The opening of a kind or 2 kinds state is referred to as degenerated mouth.

In present embodiment, because being each configured with 2 openings on the circle of periphery and on inner circumferential circle, So non degenerate mouth and degeneration mouth are respectively 2, but by changing the position of opening, valve body groove 82 Shape, it is possible at random set non degenerate mouth and the number of degeneration mouth.

It addition, the status number that the degeneration mouth of present embodiment is realized is 1, but it also is able to by adjusting The angle of whole valve body recess 82c and to make status number be 2.

[switching of state]

By make valve body 80 relative to seat board 69 by θ p rotate, it is possible to successively switching first～ 8th state.Further, it is the movement on circumferencial direction owing to rotating, therefore the 8th state and the One state also is able to transit to the other side.But, if utilizing above-mentioned stopper 84 limiting valve body 80 Rotational angle range, then can limit the transition between any 2 kinds of states.Preferably need not Realize adopting in such a way during the first～the 8th free position etc. in state.

[summary of the second embodiment]

According to present embodiment, using the teaching of the invention it is possible to provide a kind of fluid switching at application the first embodiment While the technological thought of valve, it is possible to omit the fluid changing-over valve of a part of switching state.Such as, For each of 2 openings B_1, B_3, it is possible to make it relative via circulating area S1, S2 Open in inflow entrance A, and utilize valve body groove 82a, 82b by opening open and-shut mode to each other Switch to three state.

In addition, by making the part in the most adjacent opening be formed Angle is the value being different from substantially θ a=(360/N) °, it is also possible to realize omitting part switching State.Such as, if the value more than θ a, then it is present in θ a at valve body groove 82a, 82b Scope in the case of, a part state become to realize, this point is the clearest and the most definite 's.

Number N of the opening that fluid changing-over valve 60 is had is not particularly restricted, as long as being 4 More than, when being even number as in the present embodiment, when especially preferably 4, it is possible to make out Oral sex is alternately arranged on inner circumferential circle and periphery circle.Further, now the symmetry of structure improves, Easily design.

The purposes etc. of equipment according to applicating fluid switching valve 60, it is also possible to for 1,2, 3 or more than 4 or N/2 above or each of N number of openings so that it is via circulating area S1, S2 are open relative to inflow entrance A, and utilize valve body groove 82a, 82b by opening each other Between open and-shut mode switch to three state.Similarly, for 1,2,3 or 4 Above or N/2 is above or each of N number of opening, it is possible to so that its via circulating area S1, S2 is open relative to inflow entrance A, and utilizes valve body groove 82a, 82b by opening to each other Open and-shut mode switches to 2 kinds of states.

It addition, the virtual circumference of configuration opening can also be more than 3.

" the 3rd embodiment "

Following description third embodiment of the present invention.The structure of present embodiment removes following aspect Outside can be identical with the second embodiment.It is capable of implementing with second according to present embodiment The effect that mode is same.

Figure 11 is that the configuration of opening B_1～B_4 representing present embodiment contacts with valve body slides The front elevation of the valve body slides contact surface 81 of the structure in face 81.For making explanation it can be readily appreciated that scheme 11 (a) marks hacures to valve body slides contact surface 81, convection cell circulation in Figure 11 (b) Portion 82 marks hacures.It addition, in Figure 11 (b), illustrate valve body 80 often relative to valve The position of each opening B_1～B_4 when seat board 71 rotates stepping rotational angle θ p.

Present embodiment relates to the structure of the structure of inner circumferential side Yu outer circumferential side the second embodiment Example in the case of exchanging.That is, opening B_1, B_3 is positioned on inner circumferential circle, opening B_2, B_4 is positioned on the circle of periphery.

Circulating area S2, S3 and S5 are the regions comprising periphery circle, circulating area S1, S4 It is the region comprising inner circumferential circle with S6.The angular range of circulating area S2 is more than 0 °, and flows The angular range of logical region S1 is less than θ 1.

Figure 12 is the figure of the 8 kinds of states representing that the fluid changing-over valve 60 of present embodiment realized. Each state is said in the open state of inflow entrance A and opening B_1～B_4 and the second embodiment Bright is identical.

[the second embodiment and the comparison of the 3rd embodiment]

According to the 3rd embodiment, it also is able to provide one to save in the same manner as the second embodiment The fluid changing-over valve 60 of the most a part of switching state.But, the fluid switching of the 3rd embodiment In valve 60, the circulating area S2 that the intercepting angle of circular arc is less is positioned at circle side, periphery, with circulation The circulating area S1 that region S2 is connected is positioned at inner circumferential circle side.Therefore, with the second embodiment phase Ratio, becomes big for flowing to be positioned at the circulating resistance of the fluid of the circulating area S1 of inner circumferential circle side.Cause This, the angle of the circular arc that valve body recess 82c is intercepted (overlapping with valve body recess 82c) is preferred In circle side, periphery more than inner circumferential circle side.

" the 4th embodiment "

4th embodiment of the following description present invention.The structure of present embodiment removes following aspect Outside can be identical with the second embodiment.The state of the fluid changing-over valve 60 of present embodiment exists Every θ p=θ 2 or θ 3=(θ a-θ p) switches when relatively rotating.

Figure 13 is that the configuration of opening B_1～B_4 representing present embodiment contacts with valve body slides The front elevation of the valve body slides contact surface 81 of the structure in face 81.For making explanation it can be readily appreciated that scheme 13 (a) marks hacures to valve body slides contact surface 81, convection cell circulation in Figure 13 (b) Portion 82 marks hacures.It addition, in Figure 13 (b), illustrate valve body 80 often relative to valve The position of each opening B_1～B_4 when seat board 71 rotates stepping rotational angle θ p=θ 2 or θ 3 Put.In Figure 13 (b), depict, every θ p, intersect each other at valve body axle 71 virtual Straight line.In present embodiment, θ p is 1/3 that the ratio half of θ a=90 ° is little, about 30 °.

Circulating area S4, S6 of present embodiment makes valve body groove 82a, 82b each set Angular range increase side upwardly extend.More specifically, the end of circulating area S4, S6 In, the angle, θ 8 being spaced apart from each other compared to the end being connected with circulating area S3, S5, with It is connected to the angle, θ 6 that different end, the end of circulating area S3, S5 is spaced apart from each other less.

Thus, it is also possible to served as the angle model of valve body groove 82a, 82b by circulating area S4, S6 The part enclosed.Such as, in this second embodiment, by by circulating area S3, S5 each Inner circumferential circle intercepts θ a, and guarantees whole angular range, theta a of valve body groove 82a, 82b.So And, if using the structure of present embodiment, then can reduce circulating area S3, S5 and be intercepted The angle of circular arc.In present embodiment, circulating area S3, S5 are with p=60 ° of ＜ θ of 2 × θ The scope of a intercepts inner circumferential circle, and circulating area S4, S6 are with in the scope at less θ p=30 ° The mode extended in region between inner circumferential circle and periphery circle is arranged.

By using said structure, it is possible to making θ 6 is substantially 2 × θ p=60 °.That is, by making Seat board 69 and valve body 80 relatively rotate θ p, energy from initial point state on+direction or-direction Enough make valve body groove 82a, 82b overlapping with opening B_1.It addition, can make circulating area S3, The end of the valve body recess 82c side of S5 is positioned at from valve body recess 82c remote position.Therefore, Can expand the scope of spacer portion 94, suppression fluid crosses each valve body groove 82a, 82b effectively And between valve body recess 82c.

It addition, the angular range, theta 1 of the circulating area S1 of present embodiment can be θ 6=2 × θ More than p=60 °.

[switching of state]

Figure 14 is the figure of the 8 kinds of states representing that the fluid changing-over valve 60 of present embodiment realized. For opening B_1, B_3 of circle side, periphery, by making seat board 69 and valve body 80 by θ p phase To rotation, it is possible to switch to three state.That is, same opening is overlapping with valve body recess 82c Mistake between transition between three, the four, the 5th states, the seven, the eight, the first states Cross and can be realized by the rotation of θ p.

On the other hand, the angle that opening is spaced apart from each other is θ a=90 ≈ 3 × θ p, Circulation Area Territory S1 be disposed relative to circulating area S2 in the clockwise direction with the θ p in counter clockwise direction In the range of, therefore, make that the opening overlapping with valve body recess 82c change first, second, Transition between the third state and the transition between the five, the six, the 7th states can pass through θ 3=(θ A-θ p) rotation of ≈ 2 × θ p ≈ 60 ° realizes.

" the 5th embodiment "

5th embodiment of the following description present invention.Present embodiment relates to as applying stream The refrigerator 1 of one example of the equipment of body switching valve 60.According to present embodiment, using the teaching of the invention it is possible to provide There is the fluid circuit of pattern count corresponding with equipment and there is the equipment of this fluid circuit.This reality Execute the refrigerator 1 as an example explanation in mode, have and apply explanation in the 4th embodiment The fluid circuit of fluid changing-over valve.

[summary of refrigerator 1]

Figure 15 is the summary representing and being labelled with fluid circuit on the front appearance figure of refrigerator 1 Figure.Refrigerator 1 has cold room 2, the ice-making compartment 3 of left-right situs and upper strata refrigerating chamber from top 4, lower floor's refrigerating chamber 5 and vegetable compartment 6.Each 2a of refrigerator 1,2b, 3a, 4a, 5a, 6a is for the opening in opening and closing refrigerator front.When opening each, due to warm extraneous air Contact with the opening circumference in refrigerator 1 front, therefore at opening periphery it may happen that condense.Cause This, be embedded with, in part or all of opening circumference, the condensation making the cold-producing medium of high temperature pass through Suppression pipe arrangement 17.

[structure of fluid circuit]

Figure 16 is the circuit diagram of the fluid circuit (kind of refrigeration cycle) that refrigerator 1 is had.Refrigerator 1 The kind of refrigeration cycle employing cold-producing medium as fluid is driven.Except fluid in kind of refrigeration cycle Switching valve 60 is outer also includes compressor 51, condenser 52, condensation suppression pipe arrangement 17, relief portion 54, cooler 7, pipe arrangement 55,56,57.It addition, cold-producing medium such as can use iso-butane.

At inflow entrance A, from inflow entrance A side, it is connected with pipe arrangement 55, condenser 52, pressure in turn Contracting machine 51, cooler 7.After cold-producing medium utilizes compressor 51 to become the state of High Temperature High Pressure, stream Condensed device 52 and pipe arrangement 55 arrive inflow entrance A.

One end and the other end of condensation suppression pipe arrangement 17 it is connected at opening B_1, B_3.

Connecting at opening B_2 and have one end of the first relief portion 54a, connecting at opening B_4 has the One end of two relief portion 54b.The other end of the first relief portion 54a and the second relief portion 54b divides Do not connect in merging part 89.By the refrigeration after the first relief portion 54a or the second relief portion 54b Agent flows into cooler 7 after by merging part 89, returns compressor 51.First relief portion 54a With in the second relief portion 54b, the decompression amount of the cold-producing medium passed through is different.Such as, as 2 Relief portion 54 can use capillary tube, and makes their diameter difference.

In the fluid circuit of said structure, opening B_2, B_4 make refrigerant flow direction fluid switch The downstream of valve 60 and be delivered to inflow entrance A, opening B_1, B_3 make refrigerant flow direction fluid cut Change other opening of valve 60.Hereinafter, the downstream of refrigerant flow direction fluid changing-over valve 60 will be made Opening referred to as send head piece, and the opening making other opening of refrigerant flow direction is referred to as regurgitant orifice.With shape The mode comprising a circulation sending head piece and inflow entrance A is become to switch the shape of fluid changing-over valve 60 State, also switches the shape of fluid changing-over valve 60 in the way of forming the circulation comprising even number regurgitant orifice State, the equipment of thus enabling that realizes various pattern.

Further, by such to condensation suppression pipe arrangement 17 and relief portion 54 by it is supplied fluid And make temperature or the pressure etc. of fluid change, or the parts that equipment plays certain function claim Make function part.Condensation suppression pipe arrangement 17 and relief portion 54 are the examples of function part.

As shown in Figure 16, fluid circuit is designed to exist following state: phase each other The one in 2 regurgitant orifice even is overlapping with valve body groove 82a or valve body groove 82b, another one and Recess 82c is overlapping.Herein, if making as in the present embodiment to send head piece and regurgitant orifice justifying It is alternately arranged in circumferential direction, then above-mentioned state easily occurs, the most preferred.

It addition, opening B_1, the B_3 as non degenerate mouth is set as regurgitant orifice, will be as moving back Opening B_2, B_4 of changing mouth are set as sending head piece.By non degenerate mouth more for status number is set It is set to regurgitant orifice, easily realizes being alternatively provided at the function part between 2 regurgitant orifice and supplying stream The pattern of body.Thus, easily with the unduplicated mode of each pattern and the fluid changing-over valve 60 of equipment Each state corresponding, by increasing capacitance it is possible to increase pattern count.

[pattern of fluid circuit]

The pattern of the fluid circuit corresponding with the switching state of fluid changing-over valve 60 is illustrated. Figure 17 to Figure 23 is that the first mode in the pattern of the fluid circuit representing refrigerator 1 is to successively The figure of the stream of cold-producing medium during seven patterns.Figure 24 be represent the state of fluid changing-over valve 60 with The figure of the corresponding relation of the pattern of fluid circuit.7 patterns of execution are set by present embodiment For illustrating.It addition, for ease of diagram, the position relationship of opening B closes with actual position System's difference.Specifically, in Figure 16 is to 23, opening B in the clockwise direction with B_1, The order of B_2, B_4, B_3 is recorded, but the most as shown in Figure 24, clockwise It it is the order of B_1, B_2, B_3, B_4 on direction.

[item common in each pattern]

The cold-producing medium of the High Temperature High Pressure after compressor 51 compresses flows into condenser 52, at condenser Carry out heat exchange with air (refrigerator outer air) and be cooled in 52.Flow out from condenser 52 Cold-producing medium is flowed into the inflow entrance A of fluid changing-over valve 60 via the first refrigerant piping 55.System Cryogen is after circulating according to each pattern, by flowing as opening B_2 or B_4 sending head piece Move the downstream of fluid changing-over valve 60.And then, cold-producing medium is reduced pressure by relief portion 54 and becomes low The state of temperature low pressure, arrives merging part 89.Afterwards, cold-producing medium flows into cooler 7, with surrounding Air returns compressor 51 after carrying out heat exchange.Hereinafter each pattern is illustrated.

[summary of each pattern]

First mode make cold-producing medium flow in condensation suppression pipe arrangement 17 and the first relief portion 54a Logical.Cold-producing medium is shown in the path of L1, L2 flowing, from opening B_1 side by knot Dew suppression pipe arrangement 17.Call it as the first condensation suppression mode.

Second pattern make cold-producing medium circulate in the first relief portion 54a.Cold-producing medium is as shown in the figure The path of L3 flows, does not carries to condensation suppression pipe arrangement 17.Call it as the first bypass Pattern.

3rd pattern make cold-producing medium flow in condensation suppression pipe arrangement 17 and the first relief portion 54a Logical.Cold-producing medium is shown in the path of L4, L5 flowing, from opening B_3 side by knot Dew suppression pipe arrangement 17.Call it as the second condensation suppression mode.

Fourth mode all will be closed as opening B_2, B_4 of sending head piece, block refrigerant Circulation.Present embodiment makes compressor 51 stop at this moment.Call it as stop mode.Due to It is closed as opening B_2, the B_4 sending head piece, therefore, it is possible to suppression condenser 52, condensation The cold-producing medium of the ratio higher temperatures in suppression pipe arrangement 17, pipe arrangement 55,56 flows into cooler 7 and leads The temperature causing cooler 7 rises.

5th pattern make cold-producing medium flow in condensation suppression pipe arrangement 17 and the second relief portion 54b Logical.Cold-producing medium is shown in the path of L4, L6 flowing, from opening B_3 side by knot Dew suppression pipe arrangement 17.Call it as the 3rd condensation suppression mode.

6th pattern make cold-producing medium circulate in the second relief portion 54b.Cold-producing medium is as shown in the figure Flow in the path of L7, do not carry to condensation suppression pipe arrangement 17.Call it as the second bypass Pattern.

7th pattern make cold-producing medium flow in condensation suppression pipe arrangement 17 and the second relief portion 54b Logical.Cold-producing medium is shown in the path of L1, L8 flowing, from opening B_1 side by knot Dew suppression pipe arrangement 17.Call it as the 4th condensation suppression mode.

The pattern corresponding with the 8th state be with fourth mode as stop mode.Although also may be used So that the pattern corresponding with the 8th state can perform, but present embodiment use stopper 84 press down Make the transition to the pattern corresponding with the 8th state.

[direction of the cold-producing medium of flowing in condensation suppression pipe arrangement 17]

In condensation suppression pipe arrangement 17 flowing be by condenser 52 after the cold-producing medium of high temperature, But temperature can reduce during the opening circumference in heating refrigerator main body front 16.That is, exist In condensation suppression pipe arrangement 17, the cold-producing medium of flowing becomes that its upstream side is high temperature and downstream is low temperature Temperature Distribution.In order to effectively suppress the condensation of opening circumference, need low temperature the most Downstream is maintained above the dewpoint of extraneous air.Now, if can not change at knot The direction of the cold-producing medium of flowing in dew suppression pipe arrangement 17, then in order to suppress the condensation needs in downstream The temperature making upstream side is higher compared to dewpoint, increases hence into the heat in refrigerator, It is difficult to the raising of energy-efficient performance.

According to present embodiment, it is possible to change the cold-producing medium of flowing in condensation suppression pipe arrangement 17 Direction, therefore, it is possible to reduce the upstream side of condensation suppression pipe arrangement 17 and the temperature difference in downstream, energy Enough improve energy-efficient performance.

[2 relief portion]

When user makes opening and closing to replenish new food in refrigerator 1, warm outside Air invades in refrigerator 1 together with food.From the viewpoint of the retention of food, uncommon Hope that in performing to make refrigerator, the strong of short time cooling operates.Now wish the pressure that relief portion 54 is brought Declining less, throttling action is more weak preferably.

On the other hand, in the case of the opening and closing of door is less, invade the heat within refrigerator 1 Less.Realizing the period of the steady running (weak operating) balanced with this heat, it is desirable to Make compressor 51 low-speed running and make cold-producing medium flow under stronger throttling action.Such as, If making the first relief portion 54a have the throttling action of more weak (internal diameter is thick) being suitable to operate by force, And the second relief portion 54b has the throttling action compared with strong (internal diameter is thin) being suitably stable for operating, Then it is obtained in that and is respectively adapted to operate by force and the pressure drop of steady running, it is possible to increase energy-efficient performance.

[arrangement of pattern]

In first mode to the 3rd pattern, sending head piece is opening B_2.That is, cold-producing medium via First relief portion 54a.And in the 5th pattern to the 7th pattern, sending head piece is opening B_4.That is, Cold-producing medium is via the second relief portion 54b.

In refrigerator 1, the pressure slippage being adapted in use to according to strong operating and generally operates not Different together.In present embodiment, 3 the pattern each other phases corresponding with same relief portion 54 Neighbour, therefore during strong operating and the respective execution that generally operates, it is possible to carry out mould compactly The switching control of formula.

Additionally, via condensation suppression pipe arrangement 17 and cold-producing medium flow to reciprocal first mould The second pattern as bypass mode is there is, similarly, at the 5th mould between formula and the 3rd pattern The 6th pattern as bypass mode is there is between formula and the 7th pattern.Therefore, to via knot The cold-producing medium flowing of dew suppression pipe arrangement 17 is when switching over, perform the most betwixt the second pattern or 6th pattern.If not performing bypass mode and making the flow direction drastically invert, then cold-producing medium flows Inertia load may bring harmful effect.Such load can be suppressed according to present embodiment.

[by the omission of the design implementation pattern of fluid changing-over valve]

Figure 25 is to apply in (a) first embodiment in the refrigerant loop of refrigerator 1 The fluid switching of explanation in the situation of the fluid changing-over valve illustrated and application (b) the 4th embodiment The situation of valve, represents the figure of the pattern realized respectively.

In fig. 25, only state (0) is marked opening B_1～B_4, each function part, valve body The labelling of groove 82a, 82b.

In present embodiment, in the five-way valve of N=4, do not use changeable 3 × N=12 kind shape The fluid changing-over valve 60 of state, but use and be only capable of the fluid changing-over valve realizing wherein 8 kinds of states 60.Thus, become the arrangement of pattern as above, it is possible to realize for refrigerator 1 more Preferably Schema control.

On the other hand, have studied the application of the fluid circuit to present embodiment and can realize 12 kinds of states The situation of fluid changing-over valve 60.Now, in addition to 8 kinds of above-mentioned states, such as Figure 25 (a) Shown in, between pattern 1,2, such as occur in that new leakage 1 pattern.In this leakage 1 pattern, will Cold-producing medium from inflow entrance A is delivered to relief portion 54a, simultaneously from condensation suppression pipe arrangement 17 to Relief portion 54b is also circulation.So, condensation suppression pipe arrangement 17 in high temperature refrigerant via In figure, the path of dotted arrow flows out to cooler 7, and the temperature of cooler 7 rises, therefore at ice Case 1 occurring, such pattern is undesirable.Other emerging leakage 2 is to leaking 4 patterns also It is same.

Present embodiment can omit these undesirable patterns by application said structure.Thus, During each pattern switches, it is possible to 2 regurgitant orifice that condensation suppression pipe arrangement 17 is connected Maintain closing respectively.Like this, the equipment for applicating fluid switching valve 60 is capable of more The design being suitable for.

[blocking of relief portion]

Moisture contained in cold-producing medium, produce because of compressor 51 or the action of fluid changing-over valve 60 The raw such foreign body of abrasion powder may circulate in kind of refrigeration cycle.Throttling action is stronger Second relief portion 54b is relatively thin, and foreign body is easier to block.Such as utilize temperature sensor Monitor cooler temperature, though operating the 5th pattern to the 7th pattern in any one cold But, in the case of the temperature of device 7 does not reduces, there is the probability of blocking in the second relief portion 54b. When refrigerator 1 detects this situation, by only using first mode to fourth mode so The operating of the pattern utilizing the first relief portion 54a, it is possible to the cooling operation of suppression refrigerator 1 stops Only.

[chokes operating]

In fourth mode, opening B_2 and opening B_4 is not open to inflow entrance A, cold-producing medium Loop is closed.Therefore, if making compressor 51 operate in this condition, then compressor 51 Downstream (inflow entrance A side) pressure rise, the upstream side (cooler 7 of compressor 51 Side) pressure decline, but cold-producing medium does not flows.Thus, become the what is called of compressor 51 idle running Chokes (choke) state, the most preferably.

According to present embodiment, fourth mode is positioned at the 3rd mould that used relief portion 54 is different Between formula and the 5th pattern.To the reversion of the cold-producing medium stream of condensation suppression pipe arrangement 17 preferably every rule The fixed time is carried out, and on the other hand, the relief portion 54 used is it is also preferred that follow the tracks of in the case of refrigerator The variation of situation.If the pattern using identical relief portion is positioned at the position across fourth mode, Then may produce the needs stopping compressor continually.According to the pattern configurations of present embodiment, The generation that chokes operate can be suppressed.

[summary of present embodiment]

According to present embodiment, using the teaching of the invention it is possible to provide a kind of equipment employing following fluid changing-over valve 60: In this fluid changing-over valve 60, for overlapping with valve body recess 82c and expose (becoming "ON") Opening in 2, by making seat board 69 relatively rotate with valve body 80, it is possible to by fluid Loop switch is three state.That is, 2 in opening are non degenerate mouth.Thus, as stream When body switching valve 60 is for example with five-way valve, it is possible to realize 8 kinds of states.It addition, apply this The refrigerator 1 of fluid changing-over valve 60 is capable of 7 kinds of patterns.

" summary "

The foregoing describe the various embodiments of the present invention, but can enter within the scope of the invention The various corrections of row and change.That is, the detailed description of the invention of the present invention can not change invention In the range of thought aptly, at random change.

The equipment of the fluid changing-over valve of the application present invention is not limited to refrigerator, it is possible to be applied to have stream In the various known equipment of body loop.Such as can also apply in air-conditioning or hydraulic press.

[other technological thought]

The application includes techniques below thought.

(note 1)

A kind of fluid changing-over valve, it is characterised in that including:

Fluid supply unit；

There is the valve seat of N number of opening；With

Valve body, this valve body can relatively rotate relative to this valve seat centered by valve body axle, its valve Body sliding contact surface contacts with above-mentioned valve seat,

N be 4 or more than 4 natural number,

Above-mentioned valve body includes:

The valve body groove that 2 above-mentioned openings open to each other can be made；With

Valve body recess, this valve body recess is formed and above-mentioned opening can be made to supply relative to above-mentioned fluid The circulating area that portion is open,

Above-mentioned valve body can switch above-mentioned opening supply above-mentioned fluid along with above-mentioned relatively rotating The opening and closing in portion and the opening and closing to each other of above-mentioned opening,

It is able to carry out following state a and state b:

Above-mentioned state a is the state that above-mentioned first opening is opened by above-mentioned valve body recess,

Above-mentioned state b is the state that above-mentioned second opening is opened by above-mentioned valve body recess,

And it is able to carry out following state c～f:

Above-mentioned state c is while maintaining above-mentioned state a, utilizes above-mentioned valve body groove to make above-mentioned Second to the state of wantonly 2 openings in N opening,

Above-mentioned state d is while maintaining above-mentioned state a, utilizes above-mentioned valve body groove to make with upper State in state c different by the one or both in open 2 the above-mentioned openings of above-mentioned valve body groove, And the state that 2 openings being different from above-mentioned first opening open,

Above-mentioned state e is while maintaining above-mentioned state b, utilizes above-mentioned valve body groove to make above-mentioned The first, the above-mentioned 3rd to the state of wantonly 2 openings in N opening,

Above-mentioned state f is while maintaining above-mentioned state b, utilizes above-mentioned valve body groove to make with above-mentioned In state e different by the one or both in open 2 the above-mentioned openings of above-mentioned valve body groove, And the state that 2 openings being different from above-mentioned second opening open.

According to note 1, it is possible to play the effect as the first embodiment.

(note 2)

A kind of fluid changing-over valve, it is characterised in that including:

Fluid supply unit；

There is the valve seat of N number of opening；With

Valve body, this valve body can relatively rotate relative to this valve seat centered by valve body axle, its valve Body sliding contact surface contacts with above-mentioned valve seat,

N be 5 or more than 5 natural number,

Above-mentioned valve body includes:

2 valve body grooves that 2 above-mentioned openings are open to each other can be made respectively；With

Valve body recess, this valve body recess is formed and above-mentioned opening can be made to supply relative to above-mentioned fluid The circulating area that portion is open,

Above-mentioned valve body can switch above-mentioned opening supply above-mentioned fluid along with above-mentioned relatively rotating The opening and closing in portion and the opening and closing to each other of above-mentioned opening,

Above-mentioned 2 valve body grooves can 2 above-mentioned openings of the most each opening,

Above-mentioned valve body is able to carry out following state g and state h:

Above-mentioned state g is the state that above-mentioned first opening is opened by above-mentioned valve body recess,

Above-mentioned state h is the state that above-mentioned second opening is opened by above-mentioned valve body recess,

And it is able to carry out following state i and state j:

Above-mentioned state i is while maintaining above-mentioned state g, makes above-mentioned second to N opening In wantonly 2 open by one in above-mentioned valve body groove, and make above-mentioned second to N opening In other 2 openings in addition to these 2 openings by another in above-mentioned valve body groove The state that person is open,

Above-mentioned state j is to maintain while above-mentioned state h, make the above-mentioned first, the above-mentioned 3rd to In N opening wantonly 2 open by one in above-mentioned valve body groove, and make above-mentioned first, Above-mentioned 3rd passes through to other 2 openings in addition to these 2 openings in N opening The state that another one in above-mentioned valve body groove is open.

According to note 2, using the teaching of the invention it is possible to provide switching state number is planted for (2 × N), 2 valve body grooves divide Can not open the fluid changing-over valve of 2 openings (4 altogether) simultaneously.

The application also includes techniques below thought.

(the second note 1)

A kind of fluid circuit, it is characterised in that including:

Fluid supply unit；With

Fluid changing-over valve, this fluid changing-over valve switches the opening of more than 4 relative to above-mentioned fluid The open and-shut mode of supply unit and above-mentioned opening open and-shut mode to each other,

In above-mentioned opening 2 are the regurgitant orifice being connected with each other via pipe arrangement,

Other 2 in above-mentioned opening are above transporting fluid into sending of above-mentioned fluid supply unit Head piece,

Above-mentioned fluid changing-over valve allows hand over the flow direction of the fluid of flowing in above-mentioned regurgitant orifice.

(the second note 2)

Fluid circuit as described in the second note 1, it is characterised in that be able to carry out with lower mold Formula: the one supply fluid from 2 above-mentioned regurgitant orifice, supplies fluid on 2 afterwards State the pattern of the one sent in head piece；With

Another one supply fluid from 2 above-mentioned regurgitant orifice, supplies fluid to 2 afterwards The pattern of the above-mentioned one sent in head piece.

(the second note 3)

Fluid circuit as described in the second note 2, it is characterised in that be able to carry out with lower mold Formula:

One supply fluid from 2 above-mentioned regurgitant orifice, supplies fluid on 2 afterwards State the pattern of the another one sent in head piece；With

Another one supply fluid from 2 above-mentioned regurgitant orifice, supplies fluid to 2 afterwards The pattern of the above-mentioned another one sent in head piece.

(the second note 4)

Fluid circuit as described in the second note 1, it is characterised in that:

Each above-mentioned opening is arranged in the valve seat upper annular of above-mentioned fluid changing-over valve,

Above-mentioned opening includes by regurgitant orifice, send head piece, regurgitant orifice, send the arrangement of the order of head piece.

(the second note 5)

A kind of refrigerator, it is characterised in that include the fluid recorded any one of the second note 1～4 Loop,

There is the condensation suppression pipe arrangement of the edge of opening being arranged in casing,

The discharge side of the compressor of compression cold-producing medium is connected at above-mentioned fluid supply unit,

In above-mentioned regurgitant orifice 2 connect the end side of above-mentioned condensation suppression pipe arrangement respectively with another End side,

In above-mentioned 2 suction sides connecting above-mentioned compressor respectively sent in head piece,

Perform following pattern:

Above-mentioned cold-producing medium is supplied, afterwards by above-mentioned refrigeration from the end side of above-mentioned condensation suppression pipe arrangement Agent is supplied to the first mode of above-mentioned 2 one sent in head piece；

Above-mentioned cold-producing medium is supplied to the second pattern of above-mentioned 2 one sent in head piece；

Above-mentioned cold-producing medium is supplied, afterwards by above-mentioned system from another side of above-mentioned condensation suppression pipe arrangement Cryogen is supplied to the 3rd pattern of above-mentioned 2 one sent in head piece；

Above-mentioned system is supplied from the other end lateral above-mentioned condensation suppression pipe arrangement of above-mentioned condensation suppression pipe arrangement Cryogen, is supplied to the 5th mould of above-mentioned 2 another one sent in head piece afterwards by above-mentioned cold-producing medium Formula；

Above-mentioned cold-producing medium is supplied to the 6th pattern of above-mentioned 2 another one sent in head piece；With

Above-mentioned cold-producing medium is supplied, afterwards by above-mentioned refrigeration from the end side of above-mentioned condensation suppression pipe arrangement Agent is supplied to the 7th pattern of above-mentioned 2 another one sent in head piece.

(the second note 6)

Refrigerator as described in the second note 5, it is characterised in that

Between above-mentioned first mode and above-mentioned second pattern,

Between above-mentioned second pattern and above-mentioned 3rd pattern,

Between above-mentioned 5th pattern and above-mentioned 6th pattern, and/or

During handover operation between above-mentioned 6th pattern and above-mentioned 7th pattern, substantially Above-mentioned 2 that maintain the above-mentioned condensation suppression end side of pipe arrangement and another side to connect respectively backflow The respective closing of mouth.

(the second note 7)

Refrigerator as described in the second note 5, it is characterised in that in the discharge of above-mentioned compressor It is configured with condenser between side and above-mentioned fluid changing-over valve.

Description of reference numerals

1 refrigerator

7 coolers

17 condensation suppression pipe arrangements

51 compressors

52 condensers

54 relief portion

60 fluid changing-over valves

66 valve casings (housing)

67 seat boards (valve seat)

67a the first seat board (valve seat)

67b the second seat board (valve seat)

68 flow into pipe

69 communicating pipes (the first communicating pipe, the second communicating pipe, third connecting pipe, the 4th connection Pipe)

69b communicating pipe (the first communicating pipe)

69c communicating pipe (the second communicating pipe)

69d communicating pipe (third connecting pipe)

69e communicating pipe (the 4th communicating pipe)

71 valve body axles

80 valve bodies

81 valve body slides contact surfaces

82 fluid output

82a valve body groove (the first valve body groove)

82b valve body groove (the second valve body groove)

82c valve body recess

86 leaf springs (force application mechanism)

89 merging part

90 grinding polished surfaces

94 spacer portion

A inflow entrance (fluid supply unit)

B_1 opening (the first opening)

B_2 opening (the second opening)

B_3 opening (the 3rd opening)

B_4 opening (the 4th opening).

Claims (8)

1. a fluid changing-over valve, comprising:

Fluid supply unit；

There is the valve seat of N number of opening；With

Valve body, this valve body can centered by valve body axle relatively rotating relative to this valve seat, should The valve body slides contact surface of valve body contacts with described valve seat,

Described fluid changing-over valve is characterised by:

N be 4 or more than 4 natural number,

Described valve body includes:

The valve body groove that 2 described openings open to each other can be made；With

Formation can make the circulating area that 1 described opening is open relative to described fluid supply unit Valve body recess,

Described valve body can switch described opening supply described fluid along with described relatively rotating The opening and closing in portion and the opening and closing to each other of described opening,

For each in 1 in described N number of opening or 2 or the opening more than 2, This opening can be made open relative to described fluid supply unit via described circulating area, and will Three state is switched to via the described opening open and-shut mode to each other of described valve body groove.

2. fluid changing-over valve as claimed in claim 1, it is characterised in that:

Described N number of opening lays respectively at 1 centered by described valve body axle or more than 2 On circumference, and, about 2 described openings the most adjacent one another are, by opening The angle of 2 straight lines formation substantially (360/N) ° of mouth and described valve body axle.

3. fluid changing-over valve as claimed in claim 1 or 2, it is characterised in that:

Including 2 described valve body grooves,

These 2 valve body grooves lay respectively at described when observing described valve body recess from described valve body axle In relative rotation counterclockwise and clockwise.

4. fluid changing-over valve as claimed in claim 3, it is characterised in that:

Lay respectively at centered by described valve body axle 2 of described N number of opening are concentrically ringed arbitrary On individual,

Described valve body groove each includes:

Intercept the circulating area of on the circumference of the one in described concentric circular 2；With

Extend to the circulating area on the circumference of described concentrically ringed another one,

The circulating area that described valve body recess is formed includes intercepting the respective circular arc of described concentric circular Circulating area, and, intercept the circulating area of the circular arc of another one in described concentric circular Angle is more than the angle of the circulating area of the circular arc of the one intercepted in described concentric circular.

5. fluid changing-over valve as claimed in claim 4, it is characterised in that:

N is 4,

Described opening is the most alternately arranged on 2 concentric circulars centered by described valve body axle.

6. fluid changing-over valve as claimed in claim 4, it is characterised in that:

Described 2 valve body grooves extend to the circulation on the circumference of the another one in described concentric circular The respective bearing of trend in region, is the direction making the angular range of described valve body groove increase.

7. having an equipment for fluid circuit, this fluid circuit includes described in claim 4 Fluid changing-over valve, described equipment is characterised by:

Described opening includes:

Deliver the fluid to the regurgitant orifice of other opening；With

Fluid is made to be circulated to the downstream of described fluid circuit and be transported to described fluid supply unit Send head piece,

Described fluid circuit includes the multiple function parts by being supplied to fluid and function,

A part for the plurality of function part lays respectively in the circulation including 2 described regurgitant orifice,

Other part of the plurality of function part or remaining part lay respectively at and include sending described in 1 In the circulation of head piece and described fluid supply unit.

8. the refrigerator being made up of the equipment described in claim 7, it is characterised in that:

Described fluid is cold-producing medium,

Described refrigerator includes:

Described fluid supply unit is supplied the compressor of described cold-producing medium；

2 described regurgitant orifice；With

Head piece is sent described in 2,

The condensation of the opening circumference being arranged on described refrigerator is connected respectively in described 2 regurgitant orifice Suppression pipe arrangement,

Head piece is sent to connect the first relief portion and the second relief portion respectively at described 2,

Described refrigerator is able to carry out following pattern:

One from described regurgitant orifice supplies described cold-producing medium to described condensation suppression pipe arrangement, it After described cold-producing medium is supplied to the first mode of described first relief portion；

Described cold-producing medium is supplied to the second pattern of described first relief portion；

Another one from described regurgitant orifice supplies described cold-producing medium to described condensation suppression pipe arrangement, Afterwards described cold-producing medium is supplied to the 3rd pattern of described first relief portion；

Make the fourth mode that compressor stops；

Another one from described regurgitant orifice supplies described cold-producing medium to described condensation suppression pipe arrangement, Afterwards described cold-producing medium is supplied to the 5th pattern of described second relief portion；

Described cold-producing medium is supplied to the 6th pattern of described second relief portion；With

One from described regurgitant orifice supplies described cold-producing medium to described condensation suppression pipe arrangement, it After described cold-producing medium is supplied to the 7th pattern of described second relief portion.