CN105546906A

CN105546906A - Refrigerator

Info

Publication number: CN105546906A
Application number: CN201610073707.4A
Authority: CN
Inventors: 山下太一郎; 永盛敏彦; 盐野谦治; 岩渕真也; 芦田诚; 大平昭义; 河井良二; 冈留慎一郎; 石塚正展; 笹村和文; 山胁信太郎
Original assignee: Hitachi Appliances Inc
Current assignee: Hitachi Global Life Solutions Inc
Priority date: 2012-08-31
Filing date: 2013-02-22
Publication date: 2016-05-04
Anticipated expiration: 2033-02-22
Also published as: KR20140030025A; CN103672027B; JP2014047835A; KR20150084732A; CN105546906B; KR101633719B1; CN103672027A; JP6087085B2

Abstract

The invention provides a refrigerator. The refrigerator includes: a cooler arranged in the downstream of a pressure reduction unit; a compressor arranged on the downstream of the cooler; condenser arranged on the downstream of the compressor; and a refrigerant conversion valve for connecting the upstream side of the pressure reduction unit, the downstream side of the condenser, one end side of a refrigerant flow part in which a refrigerant flows and the other end side of the refrigerant flow part. The refrigerant conversion valve includes: a communicating pipe connection part for connecting a plurality of communicating pipes; a valve seat; and a valve body having a valve slide connection surface contacting the valve seat and a communicating recess part arranged in the valve slide connection surface. The valve body can relatively rotate relative to the valve seat; the valve slide connection surface closes at least one communicating pipe according to the relative rotation; and the communicating recess part communicates at least two communicating pipes in a refrigerant flow manner according to the relative rotation.

Description

Refrigerator

The application is divisional application; The application number of its female case is " 2013101134649 ", and denomination of invention is " cold-producing medium switching valve and possess the equipment of this cold-producing medium switching valve ".

Technical field

The present invention relates to the refrigerator possessing cold-producing medium switching valve.

Background technology

As the background technology of the art, there are Japanese Unexamined Patent Publication 2009-79837 publication (patent document 1), Japanese Patent No. 4694124 publication (patent document 2), Japanese Patent No. 4786822 publication (patent document 3), Japanese Patent No. 3997036 publication (patent document 4), Japanese Patent Publication 3-552 publication (patent document 5).

That " refrigerator possesses: the heat insulating box with opening portion disclosed in patent document 1; For the inner area of heat insulating box being divided into the heat insulation partition board portion of multiple storeroom; Insulated door; Refrigerant piping; Compressor; Condenser; And for making cold-producing medium be passed to the first flow path of condenser from compressor, heat insulation partition board portion has before the heat insulation partition board portion opposed with insulated door when the inaccessible opening portion of insulated door, in addition, possesses the anti-partition board portion condensation pipe arrangement for making flow of refrigerant lead to the periphery before heat insulation partition board portion, possesses solenoid operated four-way valve, described solenoid operated four-way valve, for making flow of refrigerant lead to first flow path or making cold-producing medium be passed to condenser conversion from compressor through anti-partition board portion condensation pipe arrangement." (the solution hurdle with reference to specification digest)

It is " a kind of valve drive disclosed in patent document 2, it has main body and driver element, main body has the inflow pipe that fluid is flowed into and the effuser that fluid is flowed out, and form a part for above-mentioned fluid passage, valve body is established in inside has, described valve body, the valve port opening and closing being arranged at above-mentioned inflow pipe or above-mentioned effuser will be communicated with, the flowing of above-mentioned fluid is made to continue or disconnect, the above-mentioned valve body of drive unit drives, the feature of described valve drive is, be provided with multiple above-mentioned valve port, and the mode corresponding to a valve body with each valve port is provided with multiple valve body, be formed with the driven gear driving above-mentioned multiple valve body respectively, whole configurations of jointly often engaging of the multiple above-mentioned driven gear be provided with to make this are disposed in the periphery of a driving gear, above-mentioned driving gear is driven by above-mentioned drive unit, thus drive above-mentioned multiple driven gear together, and be provided with on above-mentioned multiple driven gear respectively and interfere with above-mentioned driving gear and limit the blocking portion rotated, the above-mentioned blocking portion rotate above-mentioned for restriction driving gear and another above-mentioned blocking portion are arranged at different above-mentioned driven gears." (with reference to claim 1)

Disclosed in patent document 3 be " a kind of electrodynamic type four-port conversion value; it is characterized in that; there is valve chest, valve body, electrodynamic type driver, described valve chest has valve chamber, the entrance be often communicated with above-mentioned valve chamber, first the exporting of the position mutually left of opening the planar bottom surface at above-mentioned valve chamber, second export and the 3rd outlet; Be arranged in above-mentioned valve chamber described valve body rotary displacement, on the end face of the above-mentioned bottom surface subtend with above-mentioned valve chamber, there is the mouth opening and closing shape portion being communicated with disconnection of carrying out above-mentioned valve chamber and the above-mentioned first ~ three and exporting, by utilize swing offset make above-mentioned mouth opening and closing shape portion relative to above-mentioned first ~ three outlet and relative displacement, change above-mentioned valve chamber and above-mentioned first ~ three outlet be communicated with disconnection; Described electrodynamic type driver stage ground carries out rotary actuation to above-mentioned valve body; Described valve body carries out switching motion between following position, that is, the first dislocation, by the periodically rotary actuation of above-mentioned electrodynamic type driver, by above-mentioned second outlet and above-mentioned 3rd outlet and above-mentioned valve chamber be communicated with disconnection, only make above-mentioned first export be communicated with above-mentioned valve chamber; Second dislocation, by above-mentioned first outlet and above-mentioned 3rd outlet and above-mentioned valve chamber be communicated with disconnection, only make above-mentioned second export be communicated with above-mentioned valve chamber; 3rd dislocation, all disconnects above-mentioned first outlet, above-mentioned second outlet with being communicated with of above-mentioned valve chamber; 4th dislocation, by above-mentioned first outlet and above-mentioned second outlet and above-mentioned valve chamber be communicated with disconnection, only make above-mentioned 3rd export be communicated with above-mentioned valve chamber; 5th dislocation, by above-mentioned 3rd outlet and above-mentioned valve chamber be communicated with disconnections, make above-mentioned first export and above-mentioned second export both sides be communicated with above-mentioned valve chamber." (with reference to claim 1)

It is " a kind of cross valve disclosed in patent document 4, possessing compressor, heat exchanger, choke valve, and use in the freeze cycle of cross valve, suck the suction inlet of fluid and the outlet of displacement fluids and the inside possessing the housing of the above-mentioned cross valve of two conversion mouths possessing, moving-member moves between the first position and the second position, when above-mentioned first position of above-mentioned moving-member, above-mentioned suction inlet is communicated with by the inside of above-mentioned housing with any one the conversion mouth in above-mentioned two conversion mouths, and above-mentioned outlet is communicated with by the inside of above-mentioned housing with another conversion mouth of appointing in above-mentioned two conversion mouths, when above-mentioned second position of above-mentioned moving-member, above-mentioned suction inlet is communicated with by the inside of above-mentioned housing with another conversion mouth of appointing in above-mentioned two conversion mouths, and above-mentioned outlet is communicated with by the inside of above-mentioned housing with any one the conversion mouth in above-mentioned two conversion mouths, it is characterized in that, possesses mobile unit, described mobile unit passes through running and the stopping of compressor, utilize the pressure because of the fluid in above-mentioned cross valve, at least one change in pressure reduction and flow and the power that occurs, above-mentioned moving-member is moved between above-mentioned first position and above-mentioned second position, above-mentioned housing is formed as cylindric, at least above-mentioned two conversion degree of lip-roundings are formed in the valve seat of the end side of the central axis direction of this housing in above-mentioned housing, above-mentioned moving-member is accommodated in above-mentioned housing, is made up of the main valve body that can rotate around above-mentioned central shaft, and on this main valve body, be formed with the connected unit that the switching valve in above-mentioned two switching valves is optionally communicated with suction inlet, above-mentioned main valve body is by the swing offset around above-mentioned central shaft, move between above-mentioned first position and above-mentioned second position, when above-mentioned first position of above-mentioned main valve body, by above-mentioned connected unit, any one switching valve in above-mentioned two switching valves is communicated with above-mentioned suction inlet, when above-mentioned second position of above-mentioned main valve body, by above-mentioned connected unit, another switching valve of appointing in above-mentioned two switching valves is communicated with above-mentioned suction inlet." (with reference to claim 1)

Disclosed in patent document 5 be " a kind of electric four-way valve; it is formed in the mode of bowl-shape valve body in the enterprising line slip of the valve block with multiple fluid flow port; it is characterized in that, be equiped with in this valve body: the rotor being accommodated in the inner side from the projecting non-magnetic screen pipe of valve body; Be installed on the outside of this shielded-plate tube and drive the motor winding of this rotor; It is the gear mechanism limiting angular turn by the rotation transformation of this rotor; And to be combined with the output shaft of this gear mechanism and can be travelling support the valve body holder of this valve body." (with reference to claims)

Patent document 1: Japanese Unexamined Patent Publication 2009-79837 publication

Patent document 2: Japanese Patent No. 4694124 publication

Patent document 3: Japanese Patent No. 4786822 publication

Patent document 4: Japanese Patent No. 3997036 publication

Patent document 5: Japanese Patent Publication 3-552 publication

In the formation that patent document 1 is recorded, cold-producing medium through the configuration of anti-partition board portion condensation is HTHP, and large with the temperature difference around refrigerator main body opening portion, the heat therefore to the cold-producing medium of refrigerator main body opening portion movement is excessive, the temperature caused in refrigerator rises, and energy usage likely increases.

Then, in the formation that patent document 2 is recorded, in order to the multiple valve port of opening and closing, need multiple valve body, therefore number of parts increases, and becomes complicated formation.

Then, in patent document 3, the position (the 3rd dislocation) that the position (the first dislocation, the second dislocation, the 4th dislocation), the simultaneously locking that are communicated with entrance any one mouthful in only exporting three all export, disconnect one and export and two other exported the position (the 5th dislocation) be communicated with entrance and record, but the connected state of each mouth of (beyond the position of the position that outlet is communicated with entrance or disconnection) beyond it is not recorded.

Then, in the formation that patent document 4 is recorded, by three outlets being communicated with suction inlet, and beyond it two outlets are interconnected, the reversion of the upstream and downstream of two heat exchangers can be changed refrigeration and heating, but the connected state beyond it not recorded.

Then, in the formation that patent document 5 is recorded, employing be via can be travelling support the valve body holder of reduction gearing to drive the formation of valve body, therefore number of parts increases, and becomes complicated formation.In addition, same with patent document 4, by three outlets being communicated with suction inlet, and beyond it two outlets are interconnected, the reversion of the upstream and downstream of two heat exchangers can be changed refrigeration and heating, but the connected state beyond it not recorded.

Summary of the invention

The present invention completes in view of above-mentioned problem, its object is to, provides a kind of refrigerator possessing cold-producing medium switching valve, carry out the conversion of cold-producing medium with can suiting the real use state of the refrigerator possessing this cold-producing medium switching valve.

In order to solve this problem, scheme one provides a kind of refrigerator, possesses: the cooler being configured at the downstream of decompressing unit; Be configured at the compressor in the downstream of described cooler; Be configured at the condenser in the downstream of described compressor; And the cold-producing medium switching valve that another side of the end side of the cold-producing medium throughput that the downstream of the upstream side of described decompressing unit, described condenser, cold-producing medium to be circulated and described cold-producing medium throughput connects, described cold-producing medium switching valve possesses: the communicating pipe connecting portion connecting multiple communicating pipe respectively; Valve seat; And valve body, it has the valve body contacted with described valve seat and slips face and be located at the connection recess that this valve body slips face, described valve body can relatively rotate relative to described valve seat, described valve body slip face according to described in relatively rotate and close communicating pipe described at least one, described connection recess according to described in relatively rotate the mode passed through with cold-producing medium and will be communicated with between at least two described communicating pipes.

Scheme two provides a kind of refrigerator, and in the refrigerator described in scheme one, the cold-producing medium being supplied to described cold-producing medium switching valve relatively rotates according to described valve body, by communicating pipe described at least one.

Scheme three provides a kind of refrigerator, in the refrigerator described in scheme one or scheme two, has: the heat insulating box with opening; And the inflow pipe connecting portion of the inflow pipe of connection the supply system cryogen, described cold-producing medium throughput is located at the periphery of described opening, and described cold-producing medium switching valve can suppress the cold-producing medium of the cold-producing medium in described condenser in the circulation and described cold-producing medium throughput of described cooler to the circulation of described cooler simultaneously.

According to the present invention, a kind of refrigerator possessing cold-producing medium switching valve can be provided, carry out while the real use state of the refrigerator possessing this cold-producing medium switching valve can be suited the conversion of cold-producing medium.

Accompanying drawing explanation

Fig. 1 is the elevation figure of the refrigerator from forward observation present embodiment;

Fig. 2 is the E-E profile of the Fig. 1 of the structure represented in the case of refrigerator;

Fig. 3 is the front view of the structure represented in the case of refrigerator;

Fig. 4 is that the major part of Fig. 2 amplifies key diagram;

Fig. 5 is the figure of the first mode of the refrigerant path of the cold-producing medium switching valve representing use first embodiment;

Fig. 6 is the figure of the second pattern of the refrigerant path of the cold-producing medium switching valve representing use first embodiment;

Fig. 7 is the figure of the 3rd pattern of the refrigerant path of the cold-producing medium switching valve representing use first embodiment;

Fig. 8 is the stereogram of the outward appearance of the cold-producing medium switching valve representing the first embodiment;

Fig. 9 is the F-F profile of Fig. 8;

Figure 10 is the G direction view of Fig. 8;

Figure 11 is the stereogram of the internal structure representing cold-producing medium switching valve, is hypothetically to unload stator casing and valve shell and the stereogram had an X-rayed from cold-producing medium switching valve;

Figure 12 is the stereogram of the formation representing rotor pinion, idle pulley and valve body;

Figure 13 (A) is the key diagram that the inside of the first state of the cold-producing medium switching valve representing the first embodiment is formed; (B) be the figure that the cold-producing medium switching valve of the first embodiment and the first mode of refrigerant path are described;

Figure 14 (A) is the key diagram of the internal structure of the second state of the cold-producing medium switching valve representing the first embodiment; (B) be the figure that the cold-producing medium switching valve of the first embodiment and the second pattern of refrigerant path are described;

Figure 15 (A) is the key diagram of the internal structure of the third state of the cold-producing medium switching valve representing the first embodiment; (B) be the figure that the cold-producing medium switching valve of the first embodiment and the 3rd pattern of refrigerant path are described;

Figure 16 is the figure of the first mode of the refrigerant path of the cold-producing medium switching valve representing use second embodiment;

Figure 17 is the figure of the second pattern of the refrigerant path of the cold-producing medium switching valve representing use second embodiment;

Figure 18 is the figure of the 3rd pattern of the refrigerant path of the cold-producing medium switching valve representing use second embodiment;

Figure 19 (A) is the key diagram of the internal structure of the first state of the cold-producing medium switching valve representing the second embodiment; (B) be the figure that the cold-producing medium switching valve of the second embodiment and the first mode of refrigerant path are described;

Figure 20 (A) is the key diagram of the internal structure of the second state of the cold-producing medium switching valve representing the second embodiment; (B) be the figure that the cold-producing medium switching valve of the second embodiment and the second pattern of refrigerant path are described;

Figure 21 (A) is the key diagram of the internal structure of the third state of the cold-producing medium switching valve representing the second embodiment; (B) be the figure that the cold-producing medium switching valve of the second embodiment and the 3rd pattern of refrigerant path are described;

Figure 22 (A) is the key diagram of the internal structure of the first state of the cold-producing medium switching valve representing the 3rd embodiment; (B) be the key diagram of internal structure of the second state of the cold-producing medium switching valve representing the 3rd embodiment; (C) be the key diagram of internal structure of the third state of the cold-producing medium switching valve representing the 3rd embodiment;

Figure 23 is the stereogram representing the valve body that the cold-producing medium switching valve of the 4th embodiment possesses;

Figure 24 (A) is the key diagram of the internal structure of the first state of the cold-producing medium switching valve representing the 4th embodiment; (B) be the key diagram of internal structure of the second state of the cold-producing medium switching valve representing the 4th embodiment; (C) be the key diagram of internal structure of the third state of the cold-producing medium switching valve representing the 4th embodiment; (D) be the key diagram of internal structure of the 4th state of the cold-producing medium switching valve representing the 4th embodiment;

Figure 25 (A) is the key diagram of the internal structure of the first state of the cold-producing medium switching valve representing the 5th embodiment; (B) be the key diagram of Inner Constitution of the second state of the cold-producing medium switching valve representing the 5th embodiment;

Figure 26 (A) is the key diagram of the internal structure of the first state of the cold-producing medium switching valve representing the 6th embodiment; (B) be the figure that the cold-producing medium switching valve of the 6th embodiment and the first mode of refrigerant loop are described;

Figure 27 (A) is the key diagram of the internal structure of the second state of the cold-producing medium switching valve representing the 6th embodiment; (B) be the figure that the cold-producing medium switching valve of the 6th embodiment and the second pattern of refrigerant loop are described;

Figure 28 is the enlarged fragmentary cross section representing the second seat board of cold-producing medium switching valve, valve body and the section of communicating pipe;

The enlarged fragmentary cross section of the second seat board of cold-producing medium switching valve when Figure 29 is the pressure increase representing communicating pipe side, valve body and the section of communicating pipe;

Figure 30 is the figure that the valve body of the cold-producing medium switching valve representing the first embodiment slips the relation between face and connected entrance; (A) be the first state; (B) be from the first state to the state during transition of the second state; (C) be the second state; (D) state when being transition from from the second state to the third state; (E) be the third state;

In figure:

7-cooler (evaporimeter), 17-anti-condensation pipe arrangement (cold-producing medium throughput), 51-compressor, 52-condenser, 54-decompressing unit, 55-the first refrigerant piping, 56-second refrigerant pipe arrangement, 57-the three refrigerant piping, 58-First Heat Exchanger, 59-the second heat exchanger, 60-cold-producing medium switching valve, 61-stator casing, 62-stator, 63-connector shell, 64-connector plug, 65-connector, 66-valve shell (shell), 67-seat board (shell), 67a-the first seat board, 67b-the second seat board (valve seat), 68-inflow pipe, 69-communicating pipe, 69b-communicating pipe (the first communicating pipe), 69c-communicating pipe (the second communicating pipe), 69d-communicating pipe (third connecting pipe), 70-rotor, 71-valve body axle, 72-rotor shaft hatch, 73-rotor bearing, 74-rotor drive division, 75-rotor pinion, 76-rotor drive division front end, 77-rotor drive shaft hole, 78-idler shaft, 79-idle pulley, 79a-little idle gear, 79b-large idle gear, 79c-idle pulley block, 80-valve body, 81-valve body slips face, 82-be communicated with recess, 83-valve body gear, 84-block, 85-valve body axis hole, 86-leaf spring (forcing unit), 87-be communicated with pore, 88-intercommunicating pore, A-inflow entrance (inflow pipe connecting portion), B, C, D-connected entrance (communicating pipe connecting portion).

Detailed description of the invention

Below, be suitably described in detail to for implementing mode of the present invention (hereinafter referred to as " embodiment ") with reference to accompanying drawing.In addition, in the various figures, at the subsidiary same symbol of general part, the repetitive description thereof will be omitted.

(the first embodiment)

(using the formation of the equipment (refrigerator) of cold-producing medium switching valve)

First, the cold-producing medium switching valve 60 (with reference to Fig. 8 etc.) of the first embodiment is described, before this explanation, as the equipment of cold-producing medium switching valve 60 (contrast Fig. 8 etc.) possessing the first embodiment, for refrigerator, Fig. 1 ~ Fig. 4 is utilized to be described.

Fig. 1 is the elevation figure from forward observation present embodiment refrigerator.Fig. 2 is the E-E profile of the Fig. 1 of the structure represented in the case of refrigerator.Fig. 3 is the front view of the structure represented in the case of refrigerator.Fig. 4 is that the major part of Fig. 2 amplifies key diagram.

As shown in Figure 3, the refrigerator main body 1 of present embodiment has refrigerating chamber 2, left and right ice-making compartment 3 arranged side by side and top freezer compartment 4, lower freezer compartment 5, vegetable compartment 6 successively from top.In addition, as an example, refrigerating chamber 2 and vegetable compartment 6 are storerooms of the refrigerated storage temperature band of about 3 ~ 5 DEG C.In addition, ice-making compartment 3, top freezer compartment 4 and lower freezer compartment 5 are storerooms of the cryogenic temperature band of about-18 DEG C.

As shown in Figure 1, refrigerating chamber 2 possesses left and right refrigerating-chamber door 2a, 2b of splitting around (so-called French) of being split to form at front side.In addition, ice-making compartment 3, top freezer compartment 4, lower freezer compartment 5, vegetable compartment 6 possess ice-making compartment door 3a, top freezer compartment door 4a, lower freezer compartment door 5a, the vegetable compartment door 6a of drawer type respectively.In addition, in the following description, sometimes by refrigerating-chamber door 2a, 2b, ice-making compartment door 3a, top freezer compartment door 4a, lower freezer compartment door 5a, vegetable compartment door 6a referred to as door 2a, 2b, 3a, 4a, 5a, 6a.

In addition, refrigerator main body 1 possesses: distinguish the door sensor (not shown) of the open and-shut mode of detecting gate 2a, 2b, 3a, 4a, 5a, 6a, be judged to be that the state that each door 2a, 2b, 3a, 4a, 5a, 6a open wide is informed when lasting stipulated time (such as, more than 1 minute) to the siren of user (not shown), the temperature setting device (possessing the operating portion of Fig. 1 and the control panel 40 of display part) etc. carrying out the temperature setting of refrigerating chamber 2 and the temperature setting of top freezer compartment 4 and lower freezer compartment 5.

As shown in Figure 2, the case of refrigerator main body 1 is outer and case is interior is separated by heat insulating box 10, and described heat insulating box 10, is formed by filled and process heat-barrier material (polyurethane foam) between interior case 10a and outer container 10b.The heat insulating box 10 of refrigerator main body 1 is provided with multiple Vacuumed insulation panel 14.

The multiple storerooms configured along the vertical direction having temperature band different by thermal wall 11a, 11b heat insulation ground zoning in case.That is, what separated by upper thermal wall 11a is the storeroom of refrigerated storage temperature band and refrigerating chamber 2, the storeroom of cryogenic temperature band and top freezer compartment 4 and ice-making compartment 3 (with reference to not shown ice-making compartment 3 in Fig. 1, Fig. 2).In addition, what separated by lower thermal wall 11b is the storeroom of cryogenic temperature band and lower freezer compartment 5, the storeroom of refrigerated storage temperature band and vegetable compartment 6.

As shown in Figure 2, inside the case of refrigerating-chamber door 2a, 2b, be equiped with multiple pockets 13.In addition, refrigerating chamber 2 is multiple storage space by multiple shelf 12 zoning on longitudinal direction.

In addition, top freezer compartment 4, lower freezer compartment 5, vegetable compartment 6, at the rear of door 4a, 5a, 6a in front being installed in respective storeroom, are respectively equipped with accommodating container 4b, 5b, 6b.And, moving side, front to by grasping the not shown stingy hand of 4a, 5a, 6a, pulling out accommodating container 4b, 5b, 6b., be provided with accommodating container (in Fig. 2, representing with (3b)) at the rear of door 3a in the ice-making compartment 3 shown in Fig. 1 too, move side, front to by grasping the not shown stingy hand of a 3a, pulling out accommodating container 3b.

As shown in Figure 2, door 2a, 2b, 3a, 4a, 5a, 6a are provided with door seal 15 around, when closing each door, by with refrigerator main body before 16 opening circumference bond, by airtight for storage space (refrigerating chamber 2, ice-making compartment 3, top freezer compartment 4, lower freezer compartment 5, vegetable compartment 6) inner closure, prevent the leakage from storage space cold air externally.

< prevents the > that condenses

At this, when opening each door 2a, 2b, 3a, 4a, 5a, 6a of refrigerator main body 1, extraneous air will with before refrigerator main body 16 opening circumference contact.Particularly, due in ice-making compartment 3, top freezer compartment 4, lower freezer compartment 5 be all cryogenic temperature band below freezing (such as,-18 DEG C), therefore when opening 3a, 4a, 5a, by extraneous air with before refrigerator main body 16 opening circumference contact and cool and become below dew point, become the states of easily 16 condensation before refrigerator main body.In addition, when closing door 3a, 4a, 5a under 16 states having dew before refrigerator main body, the water droplet before door seal 15 and refrigerator main body between 16 will be cooled to below freezing, likely can freeze.

Therefore, as shown in Figures 2 and 3, in the opening circumference of ice-making compartment 3, top freezer compartment 4, lower freezer compartment 5, the refrigerant piping 17 making to pass through the cold-producing medium that condenser 52 described later is later is embedded with.At this, in refrigerant piping 17, the temperature (temperature through the later cold-producing medium of condenser 52 described later) of the cold-producing medium of flowing is higher than box outside temperature, such as, when box outside temperature is 30 DEG C, becomes about 33 DEG C.Therefore, refrigerant piping 17 have to before refrigerator main body 16 opening circumference heat and prevent from condensing and the function freezed, in the following description, be called " anti-condensation pipe arrangement 17 ".

In addition, in the present embodiment, what anti-condensation pipe arrangement 17 adopted is the formation of opening circumference being arranged at ice-making compartment 3, top freezer compartment 4, lower freezer compartment 5, but also can adopt the formation of opening circumference being arranged at refrigerating chamber 2, vegetable compartment 6, can obtain the effect preventing from condensing equally.

< circulating cold air >

As shown in Figure 2 (suitably with reference to Fig. 3), cooler 7 is arranged in cooler receiving room 8, described cooler receiving room 8, is installed in the roughly back of lower freezer compartment 5.Cooler 7, can cold-producing medium in cooler pipe arrangement 7a and carry out heat exchange between air by being provided with multiple fin and forming on cooler pipe arrangement 7a.

In addition, above cooler 7, be provided with pressure fan 9 (such as, the fan of motor driving) in case.The air freezed by cooler 7 heat exchange is (following, air by the low temperature after cooler 7 heat exchange is called " cold air ") by pressure fan in case 9, via refrigerating chamber air-supply passage 22, vegetable compartment air-supply passage 25, ice-making compartment air-supply passage 26a, top freezer compartment air-supply passage 26b and lower freezer compartment air-supply passage 27, deliver to each storerooms such as refrigerating chamber 2, vegetable compartment 6, ice-making compartment 3, top freezer compartment 4 and lower freezer compartment 5.By the way, as is shown in phantom in fig. 3, each air-supply passage leading to refrigerating chamber 2, ice-making compartment 3, top freezer compartment 4, lower freezer compartment 5 and vegetable compartment 6 is arranged at the rear side of each storeroom of refrigerator main body 1.

Which storeroom the cold air of cooler 7 is sent to is controlled by refrigerated storage temperature band room cold air control unit 20 and cryogenic temperature band room cold air control unit 21.

At this, refrigerated storage temperature band room cold air control unit 20 is the so-called pair of air doors possessing independently two opening portions, and the first opening 20a controls the air-supply to refrigerating chamber air-supply passage 22, and the second opening 20b controls the air-supply to vegetable compartment air-supply passage 25.In addition, cryogenic temperature band room cold air control unit 21 is the single air doors possessing independent opening portion, controls the air-supply to ice-making compartment air-supply passage 26a, top freezer compartment air-supply passage 26b and lower freezer compartment air-supply passage 27.

Specifically, when the first opening 20a of refrigerated storage temperature band room cold air control unit 20 is open state, cold air is through refrigerating chamber upstream passageway 23 (aftermentioned) and refrigerating chamber air-supply passage 22, and the blow-off outlet 2c arranged from multistage delivers to refrigerating chamber 2.In addition, the cold air cooling refrigerating chamber 2, from the return port 2d of bottom being arranged at refrigerating chamber 2, through refrigerating chamber backward channel 24, flows into cooler receiving room 8 from the bottom, side of cooler receiving room 8, carries out heat exchange with cooler 7.

In addition, when the second opening 20b of refrigerated storage temperature band room cold air control unit 20 is open state, cold air, through refrigerating chamber upstream passageway 23 (aftermentioned) and vegetable compartment air-supply passage 25, delivers to vegetable compartment 6 from blow-off outlet 6c.In addition, the cold air cooling vegetable compartment 6, through return port 6d, flows into cooler receiving room 8 from the bottom of cooler receiving room 8, carries out heat exchange with cooler 7.By the way, the air quantity circulated in vegetable compartment 6 is than the air quantity circulated at refrigerating chamber 2 and little at the air quantity of cryogenic temperature band room described later circulation.

When cryogenic temperature band room cold air control unit 21 is open state, cold air, through ice-making compartment air-supply passage 26a and top freezer compartment air-supply passage 26b, delivers to ice-making compartment 3, top freezer compartment 4 respectively from blow-off outlet 3c, 4c.In addition, through lower freezer compartment air-supply passage 27, deliver to lower freezer compartment 5 from blow-off outlet 5c.Like this, cryogenic temperature band room cold air control unit 21 is installed on the top of air-supply hood 31 described later, easily realizes the air-supply to ice-making compartment 3.

In addition, deliver to the cold air of ice-making compartment 3 via ice-making compartment air-supply passage 26a and drop to lower freezer compartment 5 via the cold air that top freezer compartment air-supply passage 26b delivers to top freezer compartment 4.Then, deliver to the cold air of lower freezer compartment 5 together with via lower freezer compartment air-supply passage 27, via the refrigerating chamber return port 28 below the depth being arranged at lower freezer compartment 5, flow into cooler receiving room 8, carry out heat exchange with cooler 7.

The cold air cooling ice-making compartment 3, top freezer compartment 4 and lower freezer compartment 5, via the refrigerating chamber return port 28 below the depth being arranged at lower freezer compartment 5, turns back to cooler receiving room 8.By the way, the transverse width dimension of refrigerating chamber return port 28 and the width dimensions of cooler 7 roughly equal.

As shown in Figure 4, the back side, the cryogenic temperature band room dividing plate 29 being formed with blow-off outlet 3c, 4c, 5c by top freezer compartment 4, ice-making compartment 3 and between lower freezer compartment 5 and cooler receiving room 8 zoning open.

Zoning between cooler receiving room 8 and the back side, cryogenic temperature band room dividing plate 29 is left by the pressure fan support 30 being provided with pressure fan 9 in case.

Air-supply hood 31 configures in the mode covered in case before pressure fan 9.Between air-supply hood 31 and the back side, cryogenic temperature band room dividing plate 29, the cold air be formed for being sent here by pressure fan in case 9 imports ice-making compartment air-supply passage 26a, top freezer compartment air-supply passage 26b and the lower freezer compartment air-supply passage 27 of blow-off outlet 3c, 4c, 5c.In addition, be formed with blow-off outlet 31a on the top of air-supply hood 31, be provided with cryogenic temperature band room cold air control unit 21 at this blow-off outlet 31a.

In addition, hood 31 of blowing also plays the effect cold air sent here by pressure fan in case 9 being delivered to cold air control unit 20 side, refrigerated storage temperature band room.That is, as shown in Figure 4, not to the dynamic cold air of cryogenic temperature band room cold air control unit 21 effluent being arranged at air-supply hood 31 via refrigerating chamber upstream passageway 23, import cold air control unit 20 side, refrigerated storage temperature band room.

In addition, hood 31 of blowing is equiped with rectification part 31b before pressure fan 9 in case.Rectification part 31b carries out rectification to the turbulent flow that the cold air that will blow out causes, and prevents noise from occurring.

And, when refrigerated storage temperature band room cold air control unit 20 and cryogenic temperature band room cold air control unit 21 are open state, deliver to most of Quilt with air conditioning the mode that cold air control unit 21 side, cryogenic temperature band room and all the other Quilt with air conditioning import cold air control unit 20 side, refrigerated storage temperature band room and formed each air-supply passage etc.Thus, just can to the different storeroom of temperature band and cryogenic temperature band room (ice-making compartment 3, top freezer compartment 4 and lower freezer compartment 5) and refrigerated storage temperature band room (refrigerating chamber 2 and vegetable compartment 6) cool-air feed with a cooler 7.

As mentioned above, to the conversion of the cold air of each storeroom air-supply of refrigerator main body 1, undertaken by carrying out suitably open and close controlling to refrigerated storage temperature band room cold air control unit 20 and cryogenic temperature band room cold air control unit 21 respectively.

In addition, as shown in Figure 4, defrost unit and Defrost heater 35 is provided with in the below of cooler 7, above Defrost heater 35, for preventing defrost water from dropping onto Defrost heater 35 and being provided with upper lid 36.

By be attached to the frost on the wall of the cooler receiving room 8 of cooler 7 and periphery thereof defrosting (dissolving) and produce defrost water inflow be installed in the chute 32 of the bottom of cooler receiving room 8 after, via drainpipe 33, arrive the evaporating pan 34 being configured at Machine Room 50, evaporated by the heat of compressor 51 described later and condenser 52, be discharged to outside refrigerator.

< Machine Room >

As shown in Figures 2 and 3, Machine Room 50 is provided with in the lower back side of heat insulating box 10.As shown in Figure 3, be configured with in Machine Room 50: compress the compressor 51 of also discharging refrigerant, make cold-producing medium and air carry out the condenser 52 of heat exchange, promote case pressure fan 53, tubule and decompressing unit 54, the cold-producing medium switching valve 60 outward of the cold-producing medium of condenser 52 and the heat exchange of air.

In addition, compressor 51, condenser 52, decompressing unit 54 and cold-producing medium switching valve 60 are connected with cooler 7 and anti-condensation pipe arrangement 17 by pipe arrangement, form the refrigerant path (refrigerant loop) that cold-producing medium carries out circulating.In addition, Fig. 5 ~ Fig. 7 is utilized to be described refrigerant path (refrigerant loop) after.

< sensor, control system >

As shown in Figure 2, in the top board wall top side of refrigerator main body 1, as control unit, be configured with and control substrate 41, described control substrate 41 is equipped with memory, the interface circuits etc. such as CPU, ROM and RAM.Refrigerator is provided with: the external air temperature sensor 42 that the temperature environment (external air temperature) outside case is detected, to the extraneous air humidity sensor 43 that the humidity environment (extraneous air humidity) outside case detects, to the refrigerator temperature sensor 44 that the temperature of refrigerating chamber 2 detects, to the vegetable compartment temperature sensor 45 that the temperature of vegetable compartment 6 detects, to cryogenic temperature band room (ice-making compartment 3, top freezer compartment 4 and lower freezer compartment 5) temperature carry out the freezer temperature sensor 46 that detects, to the chiller temperature sensor 47 equitemperature sensor that the temperature of cooler 7 detects, the temperature detected is input to and controls substrate 41.In addition, the door sensor (not shown) controlling substrate 41 and the respectively open and-shut mode of detecting gate 2a, 2b, 3a, 4a, 5a, 6a, the control panel 40 (reference Fig. 1) being arranged at refrigerating-chamber door 2a are connected.

And, control substrate 41 by being equipped on the program of above-mentioned ROM in advance, carry out the ON/OFF of compressor 51 and the control of rotating speed, refrigerated storage temperature band room cold air control unit 20 and cryogenic temperature band room cold air control unit 21 are carried out to the control of indivedual respective drive motor (not shown) driven, the ON/OFF of pressure fan 9 and the control of rotating speed in case, the control of the ON/OFF of the outer pressure fan 53 of case and rotating speed etc., inform the ON/OFF of the siren (not shown) of an opening-wide state, the control of the switching motion of cold-producing medium switching valve 60 etc., the running of refrigerator entirety can be controlled thus.

< refrigerant path (refrigerant loop) >

Then, the refrigerant path (refrigerant loop) of refrigerator of Fig. 5 ~ Fig. 7 to the cold-producing medium switching valve 60 (with reference to Fig. 8 etc.) possessing the first embodiment is utilized to be described.

Fig. 5 is the figure of the first mode of the refrigerant path of the cold-producing medium switching valve 60 representing use first embodiment.Fig. 6 is the figure of the second pattern of the refrigerant path of the cold-producing medium switching valve 60 representing use first embodiment.Fig. 7 is the figure of the 3rd pattern of the refrigerant path of the cold-producing medium switching valve 60 representing use first embodiment.

Cold-producing medium switching valve 60 is the so-called cross valves possessing four communicating pipe (inflow pipe 68 utilizing Fig. 8 etc. to be described, communicating pipe 69b, 69c, 69d) below and possess an inflow entrance A, three connected entrances B, C, D.

As shown in Figure 5, at the upstream side of inflow entrance A, be connected with the first refrigerant piping 55, in condenser 52 and then side at its upstream, be connected with the high-pressure side outlet of compressor 51.Be connected with one end of second refrigerant pipe arrangement 56 at connected entrance B, via anti-condensation pipe arrangement 17, be connected with the other end of second refrigerant pipe arrangement 56 at connected entrance C.In the downstream of connected entrance D, be connected with the 3rd refrigerant piping 57, via tubule and decompressing unit 54, evaporimeter and cooler 7, be connected with the low-pressure side suction inlet of compressor 51.By the way, as the cold-producing medium of refrigerant path (refrigerant loop), such as iso-butane can be used.

As shown in Fig. 5 ~ Fig. 7, the open and-shut mode (connected state) of first mode ~ the 3rd pattern cold-producing medium switching valve 60 is separately different, and the path (loop) of cold-producing medium is different.

(first mode)

As shown in Figure 5, in a first mode, the inflow entrance A of cold-producing medium switching valve 60 is communicated with (flow of refrigerant L1) with connected entrance B, and connected entrance C is communicated with (flow of refrigerant L2) with connected entrance D.

The cold-producing medium of the HTHP compressed by compressor 51 flows into condenser 52, by carrying out heat exchange with air (case outer air) and cool in condenser 52.The cold-producing medium flowed out from condenser 52, via the first refrigerant piping 55, flows into the inflow entrance A of cold-producing medium switching valve 60, as shown in flow of refrigerant L1, flows out from connected entrance B, via a part for second refrigerant pipe arrangement 56, and inflow anti-condensation pipe arrangement 17.

At this, the temperature (that is, from the temperature of the cold-producing medium of condenser 52 outflow) flowing into the cold-producing medium of anti-condensation pipe arrangement 17 is higher than the temperature of case outer air, and the opening circumference of cold-producing medium to refrigerator main body 1 therefore flowing into anti-condensation pipe arrangement 17 is heated.

And, heat distributes the temperature in opening circumference and flows out from anti-condensation pipe arrangement 17 than cold-producing medium low during inflow anti-condensation pipe arrangement 17, via the remainder of second refrigerant pipe arrangement 56, flow into the connected entrance C of cold-producing medium switching valve 60, as shown in flow of refrigerant L2, flow out from connected entrance D, via the 3rd refrigerant piping 57, through tubule and decompressing unit 54, then carry out heat insulation expansion, become low-temp low-pressure, flow into evaporimeter and cooler 7 (cooler pipe arrangement 7a).The low-temperature refrigerant flowing into cooler 7 (cooler pipe arrangement 7a) carries out heat exchange with surrounding air in cooler 7, and turns back to compressor 51.

Like this, in a first mode, the refrigerant temperature through anti-condensation pipe arrangement 17 is higher than the external air temperature being provided with refrigerator main body 1, even if therefore when extraneous air is hot and humid, also can prevent the condensation of the opening circumference of refrigerator main body 1.

(the second pattern)

As shown in Figure 6, in a second mode, the inflow entrance A of cold-producing medium switching valve 60 is communicated with connected entrance C (being communicated with L3), and connected entrance B and connected entrance D is not communicated with other.In addition, in a second mode, compressor 51 becomes the state of stopping.

In a second mode, the loop of being carried out by cold-producing medium circulating disconnects.Namely, disconnected by the connected entrance D of cold-producing medium switching valve 60, the approach that the cold-producing medium of the higher temperatures in the first refrigerant piping 55 and condenser 52, second refrigerant pipe arrangement 56 and cold-producing medium anti-condensation pipe arrangement 17 can be flowed into the 3rd refrigerant piping 57 and cooler 7 disconnects, and can prevent the temperature of cooler 7 from rising.

At this, refrigerator, when carrying out cooling the running of storeroom by freeze cycle, makes compressor 51 action, until storeroom becomes below set point of temperature, when storeroom drops to below set point of temperature, compressor 51 is stopped.And when storeroom is higher than set point of temperature, starting compressor 51, cools storeroom again.

When compressor 51 stops, by cold-producing medium switching valve 60 is made the second pattern, the cold-producing medium in cooler 7 can be maintained low temperature.When the restarting of compressor 51, because the cold-producing medium in cooler 7 is low temperature, therefore become the state that heat exchange efficiency is high, the energy-efficient performance of refrigerator can be improved.

(the 3rd pattern)

As shown in Figure 7, in the 3rd pattern, the inflow entrance A of cold-producing medium switching valve 60 is communicated with (flow of refrigerant L4) with connected entrance D, and connected entrance B and connected entrance C is not communicated with other.

The cold-producing medium of the HTHP after being compressed by compressor 51 flows into condenser 52, by carrying out heat exchange with air (case outer air) and cool in condenser 52.From condenser 52 flow out cold-producing medium through the first refrigerant piping 55, flow into the inflow entrance A of cold-producing medium switching valve 60, as shown in flow of refrigerant L4, flow out from connected entrance D, through the 3rd refrigerant piping 57, through tubule and decompressing unit 54, then carry out heat insulation expansion, become low-temp low-pressure, flow into evaporimeter and cooler 7 (cooler pipe arrangement 7a).The low-temperature refrigerant flowing into cooler 7 (cooler pipe arrangement 7a) carries out heat exchange with surrounding air in cooler 7, and turns back to compressor 51.

When (with reference to Fig. 5) operates in a first pattern, because the temperature flow of refrigerant higher than extraneous air is to anti-condensation pipe arrangement 17, its heat is therefore likely caused to warm up heat storage room.Therefore, when extraneous air be the possibility of the condensation such as low humidity low, by operating in a third mode, flow of refrigerant can not be made to arrive anti-condensation pipe arrangement 17.Thus, although there is no the effect of the anti-condensation of the opening circumference of refrigerator main body 1, when the possibility condensed is low, the heat leakage from anti-condensation pipe arrangement 17 to refrigerator main body 1 inside can be prevented, the energy-efficient performance of refrigerator can be improved.

The first mode of cold-producing medium switching valve 60 and the 3rd pattern are based on the testing result of external air temperature sensor 42 and extraneous air humidity sensor 43, determining whether the possibility of condensation, when there being the possibility of condensation, being set to first mode, when there is no the possibility condensed, be set to the 3rd pattern, when translative mode in the above described manner, only when needed, prevent condensation, and time beyond it, can prevent heat leakage, be therefore effective in reduction power consumption.

(cold-producing medium switching valve 60)

Then, Fig. 8 ~ Figure 12 is utilized to be described the structure of the cold-producing medium switching valve 60 of the first embodiment and action.

Fig. 8 is the stereogram of the outward appearance of the cold-producing medium switching valve 60 representing the first embodiment.Fig. 9 is the F-F profile of Fig. 8.Figure 10 is the G direction view of Fig. 8.Figure 11 is the stereogram of the internal structure representing cold-producing medium switching valve 60, and be hypothetically from cold-producing medium switching valve 60 unload stator casing 61 and valve shell 66 and perspective to stereogram.Figure 12 is the stereogram of the structure representing rotor pinion 75, idle pulley 79 and valve body 80, below, be described from rotor 70 to the formation of the driving force transfer unit of the use gear of valve body 80.

As shown in Fig. 8 ~ Fig. 9, in the inside of the stator casing 61 of substantially cylindrical shape, be formed with the stator of motor and the stator 62 of substantially cylindrical shape, described stator 62 is provided with coil.In addition, a part for stator casing 61 is just formed with the connector shell 63 becoming convex form outside, is provided with connector 65 in connector shell 63, and described connector 65 has the connector plug 64 be connected with outside by the distribution from stator 62.

Valve shell 66 is formed as one by nonmagnetic material metals such as such as stainless steel materials, be upper end closed and open at its lower end have round-ended cylinder shape.The upside of valve shell 66 is chimeric with the inner circumferential of stator 62, and the downside of valve shell 66 becomes the diameter openend larger than upside.Circular seat board 67 is fitted together to, by welding or soldering, by whole week sealed engagement in this openend.

As shown in FIG. 9 and 10, first seat board 67a of disc-shape and the second seat board 67b of disc-shape is bonded with each other in the mode of seal joints by soldering by seat board 67, and the first seat board 67a of described disc-shape forms the outline of the periphery of seat board 67; Second seat board 67b diameter of described disc-shape is less than the first seat board 67a and thickness is thicker, comprises the center of the first seat board 67a.

As shown in Figure 9, on the first seat board 67a, by soldering, be combined with an inflow pipe 68 in the mode of seal joints, this inflow pipe 68 is communicated with valve shell 66 inside.In addition, on the second seat board 67b, by soldering, be combined with three communicating pipe 69 i.e. communicating pipe 69b, communicating pipe 69c and communicating pipe 69d in the mode of seal joints, this three communicating pipe 69 i.e. communicating pipe 69b, communicating pipe 69c and communicating pipe 69d are communicated with valve shell 66 inside.And as shown in Figure 10, one end of inflow pipe 68 and communicating pipe 69b, communicating pipe 69c, communicating pipe 69d, in the one side of seat board 67, is connected with to inflow entrance A, the connected entrance B of side opening in valve shell 66, connected entrance C, connected entrance D.

As shown in Figure 9, rotor 70 is rotors of the motor with magnet.The motor be constructed as follows, that is, when being energized when being connected with drive circuit (not shown) by connector plug 64, just producing magnetic field, via valve shell 66, magnetic force being delivered to rotor 70, rotor 70 is rotated on stator 62.An example of the formation of this motor is common stepping motor, and detailed, rotates to an angle one at every turn.

Valve body axle 71 is rotary middle spindles of rotor 70, and is the oscillation center axle of valve body 80 described later.

First seat board 67a and the second seat board 67b is configured to coaxially, in the center of the first seat board 67a and the second seat board 67b, is formed with embedded hole and the rotor shaft hatch 72 of valve body axle 71 in the mode of not through second seat board 67b.In addition, there is the substantial middle of bottom at the cylinder on valve shell 66 top, be formed with recess and rotor bearing 73.One end of valve body axle 71 is chimeric is supported on rotor shaft hatch 72, and the other end is chimeric is supported on rotor bearing 73.

At this, as shown in Figure 10, connected entrance B, connected entrance C and connected entrance D are configured to the same round shape centered by valve body axle 71 (rotor shaft hatch 72) by the interval of 90 °.Connected entrance C, relative to valve body axle 71 (rotor shaft hatch 72), is arranged at the position (position between valve body axle 71 (rotor shaft hatch 72) and idler shaft described later 78) of the opposition side of inflow entrance A.Connected entrance B and connected entrance D is arranged on the opposed position across connected entrance C.

As shown in FIG. 9 and 10, in the first seat board 67a, relative to valve body axle 71 (rotor shaft hatch 72), in the opposition side of inflow pipe 68 (inflow entrance A), be formed with the pivot of idle pulley 79 described later and the embedded hole of idler shaft 78, one end of idler shaft 78, by soldering, is combined with the second seat board 67b in the mode of seal joints.

In addition, as shown in Figure 9, the other end of idler shaft 78 is not fixed, and becomes the structure of so-called cantilever beam.

Rotor 70 is supported on rotor drive division 74, and with valve body axle 71 for rotary middle spindle, rotor 70 and rotor drive division 74 rotate as one.In addition, rotor pinion 75 has been partially formed in the downside of rotor drive division 74.That is, when rotor 70 rotates, rotor drive division 74 and rotor pinion 75 also rotate as one.

Valve body 80 limit is that valve body slips face 81 (with reference to Figure 12) and contacts with seat board 67, while swing centered by valve body axle 71 with one side.What adopt is swung by valve body 80, will be arranged at the formation of connected entrance B, C, D opening and closing of seat board 67.In addition, slip on face 81 (with reference to Figure 12) in the face contacted with seat board 67 of valve body 80 and valve body, be provided with recess partly and be namely communicated with recess 82 (with reference to Figure 12).In addition, the relation be communicated with between the position of recess 82 and the on-off action of connected entrance B, C, D will be explained hereinafter.In addition, valve body gear 83 is provided with in the side away from seat board 67 of valve body 80.

As shown in figure 12, the rotor pinion 75 be integrally formed with rotor drive division 74 is configured to, being arranged at of the bottom of rotor pinion 75 rotates axial protuberance and rotor drive division front end 76 is positioned in (with reference to Fig. 9) above valve body 80, respectively via rotor drive shaft hole 77 and valve body axis hole 85, around public central shaft and valve body axle 71 rotatable.

As shown in Fig. 9 and Figure 11, above valve shell 66, inner side is extended into the forcing unit of arm and leaf spring 86 and is configured in supporting rotor 70 and as integrally and above the rotor drive division 74 rotated with making local radiation shape, the reaction force in valve body axle 71 direction that inner side above valve shell 66 is subject to by the arm of leaf spring 86, put on valve body 80 via rotor drive division 74, rotor pinion 75, press valve body 80 relative to seat board 67.In addition, so the deadweight of rotor 70 also put on valve body 80 in the lump.

At this, near the position valve body axle 71 that rotor drive division front end 76 contacts with valve body 80, therefore valve body 80 is axially pressed relative to seat board 67 near rotating shaft, and therefore even and balance is pressed well.

On idler shaft 78, the rotatable earth's axis has propped up idle pulley 79, and described idle pulley 79 has large idle gear 79b and little idle gear 79a.Large idle gear 79b engages with rotor pinion 75, and little idle gear 79a engages with valve body gear 83 and slows down.The order of rotor pinion 75, large idle gear 79b, little idle gear 79a, valve body gear 83 is pressed in torque from rotor 70, while carry out the transmission of deceleration limit.

At this, if set the number of teeth of rotor pinion 75 as the number of teeth of Z1, large idle gear 79b be Z2, the number of teeth of little idle gear 79a is Z3, the number of teeth of valve body gear 83 is Z4, if all the modulus of gear is all identical, if meet the relation of Z1+Z2=Z3+Z4, axle base then between rotor pinion 75 and large idle gear 79b is just equal with the axle base between little idle gear 79a and valve body gear 83, therefore, it is possible to rotor pinion 75 and valve body gear 83 are configured to coaxially.Such as, if be set to Z1=12, Z2=34, Z3=13, Z4=33, then become Z1+Z2=Z3+Z4=46, therefore, it is possible to meet this relation.

By the way, now become (Z1 × Z3)/(Z2 × Z4) from rotor 70 to the speed reducing ratio of valve body 80, in above-mentioned example, become (12 × 13)/(34 × 33)=about 1/7.2.That is, valve body 80 rotates with the torque of 7.2 of the torque produced by rotor 70 times, and torque is abundant, reliably can carry out the switching motion of valve body 80.

In addition, as shown in figure 12, a part for valve body 80 forms the block 84 of the convex form more protruded than the periphery of valve body gear 83, at valve body 80 by clockwise or when being rotated counterclockwise maximum angle, just abut with the idle pulley block 79c of the cylindrical shape of giving prominence to than the more downward side of the little idle gear 79a of idle pulley 79, the anglec of rotation of valve body gear 83 is limited in the angular range of regulation.In addition, the anglec of rotation of valve body gear 83 is formed in such a way, namely, except rotating in the scope of the rotational angle of the switching motion necessity at valve body 80 described later, also rotate the angle of regulation extraly (such as, the angle of about 8 °), and then abut, rotation is stopped.

In addition, as shown in Figure 9, on large idle gear 79b, jut 79s is circumferentially formed with at idle pulley 79.In addition, at rotor drive division 74, be circumferentially formed with jut 74s.What the idler shaft 78 of idle pulley 79 adopted is cantilever beam structure, and when the axial position upward direction skew of idle pulley 79, jut 79s just abuts with jut 74s, can not movement further.Thus, prevent idle pulley 79 from coming off from the idler shaft 78 of cantilever beam.

The action > of < cold-producing medium switching valve 60

Then, the on-off action of Figure 13 ~ Figure 15 to connected entrance B, C, D of valve body 80 is utilized to be described.In addition, in Figure 13 ~ Figure 15, for convenience of explanation, the valve body contacted at seat board 67 slips and face 81 is attached with hatching and illustrates.

Figure 13 (A), Figure 14 (A) and Figure 15 (A) be all the arrow G direction from Fig. 8 is seen idle pulley 79, valve body 80, inflow entrance A, connected entrance B, connected entrance C, connected entrance D the figure that is described of position relationship.The connected entrance C that what Figure 13 (A) represented is is covered by valve body 80 and connected entrance D be communicated with by being communicated with recess 82 and connected entrance B to the first state of valve shell 66 inside opening.What Figure 14 (A) represented is connected entrance B and connected entrance D covers by valve body 80 and connected entrance C to the second state of valve shell 66 inside opening.What Figure 15 (A) represented is connected entrance B and connected entrance C covers by valve body 80 and connected entrance D to the third state of valve shell 66 inside opening.

Valve body 80 reversibly can carry out following action, namely, from the first state shown in Figure 13 (A) through the third state shown in the second state shown in Figure 14 (A) to Figure 15 (A), and then, turn back to the first state shown in Figure 13 (A) through the second state shown in Figure 14 (A).

The inflow entrance A of inflow pipe 68 is arranged at idle pulley 79 opposition side across valve body gear 83, even if valve body 80 swings, also not locking, often to valve shell 66 interior open.

The connected entrance C of communicating pipe 69c is positioned on the extended line of straight line valve body axle 71 and idler shaft 78 linked, and relative to valve body axle 71, is arranged on inflow entrance A opposition side close to valve body axle 71 ground.

The connected entrance B of communicating pipe 69b and the connected entrance D of communicating pipe 69d is configured on the circular arc of the connected entrance C through communicating pipe 69c centered by valve body axle 71, on the same circular arc centered by valve body axle 71, across the connected entrance C of communicating pipe 69c position and be separately positioned on the position of angle 90 °.

The valve body being arranged at valve body 80 slip face 81 by the first state (with reference to Figure 13 (A)) be set to 0 ° from valve body axle 71 to the direction of connected entrance B time, the connected entrance be configured in the scope of 90 ° ~ 270 ° can be covered such size to arrange when being rotated counterclockwise, the connected entrance being configured at 0 ° of position can be made to valve shell 66 inside opening.

In addition, be formed at the connection recess 82 that valve body slips face 81 to be formed as follows, namely, by the first state (with reference to Figure 13 (A)) be set to 0 ° from valve body axle 71 to the direction of connected entrance B time, when being rotated counterclockwise, the connected entrance be configured in the scope of 90 ° ~ 180 ° can be made to be communicated with.

Figure 13 (B) is the schematic diagram that refrigerant path when being the first state (with reference to Figure 13 (A)) to cold-producing medium switching valve 60 is described.

When cold-producing medium switching valve 60 is the first state (with reference to Figure 13 (A)), the cold-producing medium flowed into from inflow entrance A can flow to connected entrance B via in valve shell 66.In addition, the cold-producing medium flowed into from connected entrance C can flow to connected entrance D via connection recess 82.

That is, by cold-producing medium switching valve 60 being set to the first state (with reference to Figure 13 (A)), refrigerant path can be set to first mode (with reference to Fig. 5).

Figure 14 (B) is the schematic diagram that is described of refrigerant path when being the second state (with reference to Figure 14 (A)) to cold-producing medium switching valve 60, expression be the state making valve body 80 swing 90 ° with being rotated counterclockwise from the first state (with reference to Figure 13 (A)).

When cold-producing medium switching valve 60 is the second state (with reference to Figure 14 (A)), inflow entrance A is communicated with via in valve shell 66 with connected entrance C.In addition, connected entrance B becomes the state of being slipped face 81 obturation by valve body.In addition, although connected entrance C be communicated with recess 82 and be communicated with, be not connected with other connected entrances, become inaccessible state.

That is, by cold-producing medium switching valve 60 being set to the second state (with reference to Figure 14 (A)), refrigerant path can be set to the second pattern (with reference to Fig. 6).

Figure 15 (B) is the schematic diagram that is described of refrigerant path when being the third state (with reference to Figure 15 (A)) to cold-producing medium switching valve 60, expression be the state making valve body 80 swing 90 ° with being rotated counterclockwise from the second state (with reference to Figure 14 (A)).

When cold-producing medium switching valve 60 is the third state (with reference to Figure 15 (A)), inflow entrance A is communicated with via in valve shell 66 with connected entrance D.In addition, although connected entrance B be communicated with recess 82 and be communicated with, be not connected with other connected entrances, become inaccessible state.In addition, connected entrance C becomes the state of being slipped face 81 obturation by valve body.

That is, by cold-producing medium switching valve 60 being set to the third state (with reference to Figure 15 (A)), refrigerant path can be set to the 3rd pattern (with reference to Fig. 7).

< effect, effect >

As utilized as described in Figure 13 ~ Figure 15, the cold-producing medium switching valve 60 of the first embodiment is by conversion valve body 80, can be converted to: inflow pipe 68 (inflow entrance A) be communicated with communicating pipe 69b (connected entrance B) and communicating pipe 69c (connected entrance C) be communicated with communicating pipe 69d (connected entrance D) the first state (with reference to Figure 13 (A)), inflow pipe 68 (inflow entrance A) is communicated with communicating pipe 69c (connected entrance C) and second state (with reference to Figure 14 (A)) of communicating pipe 69b (connected entrance B) and communicating pipe 69d (connected entrance D) obturation, inflow pipe 68 (inflow entrance A) is communicated with communicating pipe 69d (connected entrance D) and the third state (with reference to Figure 15 (A)) of communicating pipe 69b (connected entrance B) and communicating pipe 69c (connected entrance C) obturation.Thereby, it is possible to provide the cold-producing medium switching valve 60 that the conversion performance of cold-producing medium improves.In addition, the real use state ground that can suit the equipment (refrigerator) possessing this cold-producing medium switching valve 60 carries out the conversion of cold-producing medium.

In addition, as utilized as described in Fig. 5 ~ Fig. 7 and Figure 13 ~ Figure 15, the equipment (refrigerator) possessing the cold-producing medium switching valve 60 of the first embodiment can be changed by the pattern of the action of unique cold-producing medium switching valve 60 to these three refrigerant path (refrigerant loop) following: the cold-producing medium higher than extraneous air to anti-condensation pipe arrangement 17 supplying temperature and prevent the first mode condensed (with reference to Fig. 5, Figure 13 (B)), when making compressor 51 stop, the temperature of the cold-producing medium in cooler 7 is maintained the second pattern of low temperature (with reference to Fig. 6, Figure 14 (B)), reduce the 3rd pattern (the reference Fig. 7 from the heat leakage of anti-condensation pipe arrangement 17, Figure 15 (B)).Thus, the valve being arranged at refrigerant path (refrigerant loop) of equipment (refrigerator) is only cold-producing medium switching valve 60, does not need other valve additional, just can form freeze cycle, therefore, it is possible to qurer is formed.In addition, because the conversion and control of valve and configuration can not be complicated, the reliability of the equipment (refrigerator) of cold-producing medium switching valve 60 is possessed therefore, it is possible to improve.

In addition, when possessing the equipment (refrigerator) of the cold-producing medium switching valve 60 of the first embodiment extraneous air be hot and humid in the measurement result according to extraneous air humidity sensor and have the possibility of condensation, refrigerant path (refrigerant loop) can be converted to first mode (with reference to Fig. 5, Figure 13 (B)), when extraneous air is low humidity and does not have the possibility condensed, refrigerant path (refrigerant loop) can be converted to the 3rd pattern (with reference to Fig. 7, Figure 15 (B)).In addition, as mentioned above, the conversion of this pattern can be changed by the action of cold-producing medium switching valve 60.Thus, when there being the possibility of condensation, making high temperature refrigerant pass anti-condensation pipe arrangement 17, can the temperature of circumference before the opening of storeroom is set as higher than storage room temp, thus prevent condensation.In addition, when there is no the possibility condensed, passing of the cold-producing medium of anti-condensation pipe arrangement 17 being stopped, the heat energization consumption to storeroom internal leakage from anti-condensation pipe arrangement 17 can be suppressed.

In the cold-producing medium switching valve 60 of the first embodiment, from the cold-producing medium of the high pressure of compressor 51 via the first refrigerant piping 55 (with reference to Fig. 5), inflow pipe 68 (with reference to Fig. 9), inflow entrance A (with reference to Figure 10), flow into the space in valve shell 66.Therefore, on the valve body 80 in valve shell 66, effect has the power in direction valve body 80 being pressed on seat board 67.Thus, the bond properties that valve body slips between face 81 and seat board 67 improves, and can reduce the leakage of cold-producing medium.

In addition, in the cold-producing medium switching valve 60 of the first embodiment, the rotor pinion 75 rotated integrally with rotor 70 and rotor drive division 74 is stacked on valve body 80; Rotor pinion 75 and valve body 80 are configured to coaxial and around public rotating shaft and valve body axle 71 rotatable; The idle pulley 79 being provided with large idle gear 79b and little idle gear 79a is integratedly configured with rotatably around the idler shaft 78 arranged with valve body axle 71 split.And, make rotor pinion 75 and large idle gear 79b engage and slow down, and then, make little idle gear 79a and valve body gear 83 engage and slow down further.Thus, can be rotate around valve body axle 71 and these two axles of idler shaft 78 by rotor pinion 75, idle pulley 79, these three gear arrangement of valve body gear 83, therefore, it is possible to configure three pieces of gears in the projected area of two pieces of gears, can be miniaturized by cold-producing medium switching valve 60.

In addition, owing to carrying out two stage deceleration from rotor pinion 75 to valve body gear 83, therefore speed reducing ratio increases, and can increase the torque of transmitting to valve body 80, therefore, it is possible to reliably carry out the switching motion of valve body 80.In addition, even if the friction between valve body 80 and valve seat (the second seat board 67b) increases, torque also can not be not enough, therefore valve body 80 does not need to use special low-friction material, in addition, even the combination of the stators and rotators that torque is low, also can action, therefore, it is possible to reduce the manufacturing cost of cold-producing medium switching valve 60.

In addition, as shown in Figure 9, in the cold-producing medium switching valve 60 of the first embodiment, rotor 70 (rotor drive division 74, rotor pinion 75) and valve body 80 are configured to coaxial with public valve body axle 71; Rotor 70 (rotor drive division 74, rotor pinion 75) is positioned on valve body 80; Exerted a force by leaf spring 86 pairs of rotors 70 (rotor drive division 74, rotor pinion 75).Thus, valve body 80 comes to exert a force to valve seat (the second seat board 67b) by the elastic force of leaf spring 86 and the deadweight of rotor 70 (rotor drive division 74, rotor pinion 75), therefore by being set to the pressing force of appropriateness, can slip at valve body pressing force face 81 reliably being sealed cold-producing medium.

In addition, as shown in Figure 9, in the cold-producing medium switching valve 60 of the first embodiment, what the valve body axle 71 of supporting valve body 80 adopted is slips face 81 with valve body and the rotor shaft hatch 72 of the valve seat (the second seat board 67b) that contacts with valve body 80 and be arranged at the double base recess of upper end of valve shell 66 and rotor bearing 73 pairs of two ends supported and construct by being arranged at, be easy to get the supporting rigidity of valve body 80 and precision, can slip on face 81 reliably seal cold-producing medium at valve body.In addition, due to employing is the formation that rotor 70 (rotor drive division 74, rotor pinion 75) rotates around valve body axle 71, therefore do not need to arrange high-precision bearing on rotor shaft hatch 72 and rotor bearing 73, the manufacturing cost of cold-producing medium switching valve 60 can be reduced.

In addition, by rotor 70 (rotor drive division 74, rotor pinion 75) and valve body 80 being set to coaxially, valve body axle 71 can be extended.By the distance between the rotor shaft hatch 72 of supporting valve body axle 71 and rotor bearing 73 is extended, the impact on valve body 80 that the gradient that can reduce valve body axle 71 causes.Namely, the gradient of valve body axle 71 relative to the mismachining tolerance of rotor shaft hatch 72 and rotor bearing 73 can be reduced, the precision of valve body axle 71 relative to the perpendicularity of the second seat board 67b can be improved, the precision of the valve body 80 that is therefore easy to get, can slip on face 81 at valve body and reliably seal cold-producing medium.

In addition, as shown in Figure 9, in the cold-producing medium switching valve 60 of the first embodiment, idler shaft 78 is the assembling raising of cantilever beam structure, cold-producing medium switching valve 60.In addition, even if when upward direction moves idle pulley 79, also coming off of idle pulley 79 can be prevented because large idle gear 79b abuts with rotor drive division 74.In addition, preferably by forming jut 74s at rotor drive division 74 and form jut 79s on idle pulley 79, contact area is reduced.

(the second embodiment)

Then, Figure 16 ~ Figure 21 is utilized to be described the cold-producing medium switching valve of the second embodiment and the equipment that possesses this cold-producing medium switching valve.

(first mode)

Figure 16 is the figure of the first mode of the refrigerant path of the cold-producing medium switching valve representing use second embodiment.

As shown in figure 16, in a first mode, the inflow entrance A of cold-producing medium switching valve 60 is communicated with (flow of refrigerant L1) with connected entrance B, and connected entrance C is communicated with (flow of refrigerant L2) with connected entrance D.That is, same with the first mode of the first embodiment shown in Fig. 5, omit the description.

(the second pattern)

Figure 17 is the figure of the second pattern of the refrigerant path of the cold-producing medium switching valve representing use second embodiment.

As shown in figure 17, in a second mode, the connected entrance B of cold-producing medium switching valve 60 is communicated with connected entrance C (being communicated with L5), and inflow entrance A and connected entrance D is not communicated with other.

In addition, in a second mode, compressor 51 becomes the state of stopping.That is, with the second pattern of the first embodiment shown in Fig. 6 unlike the position be communicated with.

About second pattern (with reference to Figure 17) of the second embodiment, also same with second pattern (with reference to Fig. 6) of the first embodiment, the loop of being carried out by cold-producing medium circulating disconnects.Namely, be disconnected by the connected entrance D of cold-producing medium switching valve 60, the approach that the cold-producing medium of the higher temperatures in the first refrigerant piping 55 and condenser 52, second refrigerant pipe arrangement 56 and anti-condensation pipe arrangement 17 can be flowed into the 3rd refrigerant piping 57 and cooler 7 disconnects, thus prevent the temperature of cooler 7 from rising, the energy-efficient performance of refrigerator can be improved.

(the 3rd pattern)

Figure 18 is the figure of the 3rd pattern of the refrigerant path of the cold-producing medium switching valve representing use second embodiment.

As shown in figure 18, in the 3rd pattern, the inflow entrance A of cold-producing medium switching valve 60 is communicated with (flow of refrigerant L4) with connected entrance D, and connected entrance B and connected entrance C is not communicated with other.That is, same with the 3rd pattern of the first embodiment shown in Fig. 7, omit the description.

The cold-producing medium switching valve > of < second embodiment

Then, the on-off action of Figure 19 ~ Figure 21 to connected entrance B, C, D of the valve body 80 of the cold-producing medium switching valve of the second embodiment is utilized to be described.In addition, in Figure 19 ~ Figure 21, for convenience of explanation, slip additional hatching on face 81 at the valve body contacted with seat board 67 and illustrate.

Figure 19 (A), Figure 20 (A) and Figure 21 (A) be see from the arrow G direction of Fig. 8 idle pulley 79, valve body 80, inflow entrance A, connected entrance B, connected entrance C, connected entrance D the figure that is described of position relationship.The connected entrance C that what Figure 19 (A) represented is is covered by valve body 80 and connected entrance D be communicated with by being communicated with recess 82 and connected entrance B to the first state of valve shell 66 inside opening.That Figure 20 (A) represents is connected entrance B, connected entrance C and connected entrance D is covered by valve body 80 and the second state that connected entrance B and connected entrance C is communicated with by being communicated with recess 82.What Figure 21 (A) represented is connected entrance B and connected entrance C covers by valve body 80 and connected entrance D to the third state of valve shell 66 inside opening.

The cold-producing medium switching valve of the second embodiment is compared with the cold-producing medium switching valve (with reference to Figure 13 (A)) of the first embodiment, and as shown in Figure 19 (A), the position of connected entrance B, connected entrance C and connected entrance D is different.That is, the position of connected entrance C is, connected entrance C, relative to valve body axle 71 (rotor shaft hatch 72), is arranged at the position (between valve body axle 71 (rotor shaft hatch 72) and inflow entrance A) of inflow entrance A homonymy.Connected entrance B and connected entrance D is arranged at the opposed position across connected entrance C.In addition, connected entrance B, connected entrance C and connected entrance D are configured to the same round shape centered by valve body axle 71 (rotor shaft hatch 72) by the interval of 90 °, in Figure 19 (A), the mode becoming the order of B, C, D during to be rotated counterclockwise configures.

In addition, the cold-producing medium switching valve of the first embodiment from the first state (with reference to Figure 13 (A)) when the second state (with reference to Figure 14 (A)) is to the third state (with reference to Figure 15 (A)), valve body 80 is rotated counterclockwise, on the other hand, the cold-producing medium switching valve of the second embodiment from the first state (with reference to Figure 19 (A)) when the second state (with reference to Figure 20 (A)) is to the third state (with reference to Figure 21 (A)), valve body 80 turns clockwise, different from the cold-producing medium switching valve of the first embodiment in this.

Figure 19 (B) is the schematic diagram that refrigerant path when being the first state (with reference to Figure 19 (A)) to cold-producing medium switching valve is described.

When cold-producing medium switching valve 60 is the first state (with reference to Figure 19 (A)), the cold-producing medium flowed into from inflow entrance A can flow to connected entrance B via in valve shell 66.In addition, the cold-producing medium flowed into from connected entrance C can flow to connected entrance D via connection recess 82.

That is, by the cold-producing medium switching valve 60 of the second embodiment being set to the first state (with reference to Figure 19 (A)), refrigerant path can be set to first mode (with reference to Figure 16).

Figure 20 (B) is the schematic diagram that is described of refrigerant path when being the second state (with reference to Figure 20 (A)) to cold-producing medium switching valve, expression be make valve body 80 dextrorotation from the second state (with reference to Figure 19 (A)) rotatably swing 90 ° of later states.

When cold-producing medium switching valve 60 is the second state (with reference to Figure 20 (A)), connected entrance B is communicated with via being communicated with recess 82 with connected entrance C.In addition, connected entrance D becomes the state of being slipped face 81 obturation by valve body.Like this, connected entrance B, connected entrance C and connected entrance D are covered by valve body 80, and inflow entrance A is not connected with connected entrance, become inaccessible state.

That is, by the cold-producing medium switching valve 60 of the second embodiment being set to the second state (with reference to Figure 20 (A)), refrigerant path can be set to the second pattern (with reference to Figure 17).

Figure 21 (B) is the schematic diagram that is described of refrigerant path when being the third state (with reference to Figure 21 (A)) to cold-producing medium switching valve, expression be make valve body 80 dextrorotation from the second state (with reference to Figure 20 (A)) rotatably swing 90 ° of later states.

When cold-producing medium switching valve 60 is the third state (with reference to Figure 20 (A)), inflow entrance A is communicated with via in valve shell 66 with connected entrance D.In addition, although connected entrance B be communicated with recess 82 and be communicated with, be not connected with other connected entrances, become inaccessible state.In addition, connected entrance C becomes the state of being slipped face 81 obturation by valve body.

That is, by the cold-producing medium switching valve 60 of the second embodiment being set to the third state (with reference to Figure 21 (A)), refrigerant path can be set to the 3rd pattern (with reference to Figure 18).

< effect, effect >

As utilized as described in Figure 19 ~ Figure 21, the cold-producing medium switching valve of the second embodiment is by conversion valve body 80, can be converted to: inflow pipe 68 (inflow entrance A) be communicated with communicating pipe 69b (connected entrance B) and communicating pipe 69c (connected entrance C) be communicated with communicating pipe 69d (connected entrance D) the first state (with reference to Figure 19 (A)), communicating pipe 69b (connected entrance B) is communicated with communicating pipe 69c (connected entrance C) and second state (with reference to Figure 20 (A)) of communicating pipe 69d (connected entrance D) obturation, inflow pipe 68 (inflow entrance A) is communicated with communicating pipe 69d (connected entrance D) and the third state (with reference to Figure 21 (A)) of communicating pipe 69b (connected entrance B) and communicating pipe 69c (connected entrance C) obturation.Thereby, it is possible to the cold-producing medium switching valve providing the conversion performance of cold-producing medium to improve.In addition, the real use state ground that can suit the equipment (refrigerator) possessing this cold-producing medium switching valve carries out the conversion of cold-producing medium.

(the 3rd embodiment)

Then, the cold-producing medium switching valve of Figure 22 to the 3rd embodiment is utilized to be described.In addition, in fig. 22, for convenience of explanation, slip additional hatching on the 81A of face at the valve body contacted with seat board 67 and illustrate.Figure 22 (A) is the key diagram of the internal structure of the first state of the cold-producing medium switching valve representing the 3rd embodiment, Figure 22 (B) is the key diagram of the internal structure of the second state of the cold-producing medium switching valve representing the 3rd embodiment, and Figure 22 (C) is the key diagram of the internal structure of the third state of the cold-producing medium switching valve representing the 3rd embodiment.

The cold-producing medium switching valve of the first embodiment is cross valve, on the other hand, the cold-producing medium switching valve of the 3rd embodiment is triple valve, seat board 67 is formed inflow entrance A, connected entrance B and connected entrance D, be not formed with connected entrance C, different from the cold-producing medium switching valve of the first embodiment in this.

In addition, the valve body 80 of the first embodiment slips on face 81 at valve body and is formed with connection recess 82, and on the other hand, the valve body 80A of the 3rd embodiment does not slip face 81A at valve body and is formed with connection recess, different from the valve body 80 of the first embodiment in this.

What Figure 22 (A) represented is connected entrance B is to valve shell 66 inside opening and the first state of being covered by valve body 80A of connected entrance D.In this first state, inflow entrance A is communicated with connected entrance B, and connected entrance D becomes inaccessible state.

What Figure 22 (B) represented is the second state that connected entrance B and connected entrance D is covered by valve body 80A, and is make valve body 80A swing 90 ° of later states with being rotated counterclockwise from the first state (with reference to Figure 22 (A)).In this second state, connected entrance B and connected entrance D is inaccessible, is the state be not communicated with inflow entrance A.

What Figure 22 (C) represented is connected entrance B covers by valve body 80A and connected entrance D to the third state of valve shell 66 inside opening, be make valve body 80A from the second state (with reference to Figure 22 (B)), swing 90 ° of later states with being rotated counterclockwise.In this third state, inflow entrance A is communicated with connected entrance D, and connected entrance B is inaccessible state.

When setting the state that is communicated with inflow entrance A as "ON", setting the state that is not communicated with inflow entrance A as " closing ", and when expressing the state of connected entrance B and connected entrance D with the form of " connected entrance B/ connected entrance D ", the cold-producing medium switching valve desirable " opening/closing " of the 3rd embodiment, " close/close ", " close/open " these three states.Namely, following triple valve can be set to, namely, from only connected entrance B be open state (with reference to Figure 22 (A)) to when only connected entrance D is open state (with reference to Figure 22 (C)) conversion, via connected entrance B and connected entrance D for the state of closing (with reference to Figure 22 (B)) is changed.

According to the cold-producing medium switching valve of the 3rd embodiment, formation that can be same by the cold-producing medium switching valve with the first embodiment, is used as triple valve and plays function.In addition, can promptly carry out the circulation of cold-producing medium and the conversion of disconnection, the bond properties that valve body slips between face 81A and seat board 67 improves, and the reliability of suppression refrigrant leakage can be made to improve.

(the 4th embodiment)

Then, the cold-producing medium switching valve of Figure 23 and Figure 24 to the 4th embodiment is utilized to be described.In addition, in fig. 24, for convenience of explanation, slip additional hatching on the 81B of face at the valve body contacted with seat board 67 and illustrate.Figure 23 is the stereogram of the valve body 80B that the cold-producing medium switching valve of the 4th embodiment possesses.Figure 24 (A) is the key diagram of the internal structure of the first state of the cold-producing medium switching valve representing the 4th embodiment, Figure 24 (B) is the key diagram of the internal structure of the second state of the cold-producing medium switching valve representing the 4th embodiment, and Figure 24 (C) is the key diagram of the internal structure of the third state of the cold-producing medium switching valve representing the 4th embodiment.Figure 24 (D) is the key diagram of the internal structure of the 4th state of the cold-producing medium switching valve representing the 4th embodiment.

The cold-producing medium switching valve of the first embodiment is cross valve, on the other hand, the cold-producing medium switching valve of the 4th embodiment is triple valve, seat board 67 is formed inflow entrance A, connected entrance C and connected entrance D, be not formed with connected entrance B, different from the cold-producing medium switching valve of the first embodiment in this.

In addition, the area that the valve body of the valve body 80 of the first embodiment slips face 81 is the size (with reference to Figure 20 (A)) that can block three connected entrances, be formed and be communicated with recess 82, on the other hand, the area that the valve body of the valve body 80B of the 4th embodiment slips face 81B is the size (with reference to Figure 24 (A)) that can block adjacent two connected entrances (connected entrance C and connected entrance D), be not formed with connection recess, different from the valve body 80 of the first embodiment in this.In addition, the block 84B of the such valve body 80B of the pendulum angle expanding valve body 80B shape and expand valve body gear 83 arranging angle this point on different from the valve body 80 of the first embodiment.

What Figure 24 (A) represented is the first state that connected entrance C and connected entrance D is covered by valve body 80B.In this first state, connected entrance C and connected entrance D is inaccessible, is the state be not communicated with inflow entrance A.

What Figure 24 (B) represented is connected entrance C to valve shell 66 inside opening and the second state of being covered by valve body 80B of connected entrance D, expression be make valve body 80B from the first state (with reference to Figure 24 (A)), swing 90 ° of later states with being rotated counterclockwise.In this second state, inflow entrance A is communicated with connected entrance C, and connected entrance D is inaccessible state.

What Figure 24 (C) represented is the third state of connected entrance C and connected entrance D to valve shell 66 inside opening, expression be make valve body 80B swing 90 ° of later states with being rotated counterclockwise from the second state (with reference to Figure 24 (B)).In this third state, inflow entrance A is the state be communicated with connected entrance C and connected entrance D.

What Figure 24 (D) represented is connected entrance C covers by valve body 80 and connected entrance D to the 4th state of valve shell 66 inside opening, expression be make valve body 80B from the third state (with reference to Figure 24 (C)), swing 90 ° of later states with being rotated counterclockwise.In the 4th state, inflow entrance A is communicated with connected entrance D, and connected entrance C is inaccessible state.

When set the state that is communicated with inflow entrance A as "ON", the state that is not communicated with inflow entrance A be " closing ", and when expressing the state of connected entrance C and connected entrance D with the form of " connected entrance C/ connected entrance D ", the cold-producing medium switching valve desirable " close/close " of the 4th embodiment, " opening/closing ", " open/open ", " close/open " these four states.

In addition, the cold-producing medium switching valve of the 4th embodiment, by carrying out action from the second state to the 4th state, can get " opening/closing ", " open/open ", " close/open " these three states.Namely, following triple valve can be set to, namely, from only connected entrance C be open state (with reference to Figure 24 (B)) to when only connected entrance D is open state (with reference to Figure 24 (D)) conversion, be that open state (with reference to Figure 24 (C)) is changed via connected entrance C and connected entrance D.

According to the cold-producing medium switching valve of the 4th embodiment, formation that can be same by the cold-producing medium switching valve with the first embodiment, is used as triple valve and plays function.In addition, can promptly carry out the circulation of cold-producing medium and the conversion of disconnection, the bond properties that valve body slips between face 81B and seat board 67 improves, and the reliability of suppression refrigrant leakage can be made to improve.

(the 5th embodiment)

Then, the cold-producing medium switching valve of Figure 25 to the 5th embodiment is utilized to be described.In addition, in fig. 25, for convenience of explanation, slip additional hatching on the 81A of face at the valve body contacted with seat board 67 and illustrate.

Figure 25 (A) is the key diagram of the internal structure of the first state of the cold-producing medium switching valve representing the 5th embodiment, and Figure 25 (B) is the key diagram of the internal structure of the second state of the cold-producing medium switching valve representing the 5th embodiment.

The cold-producing medium switching valve of the first embodiment is cross valve, on the other hand, the cold-producing medium switching valve of the 5th embodiment is two-way valve, seat board 67 is formed inflow entrance A and connected entrance D, be not formed with connected entrance B and connected entrance C, different from the cold-producing medium switching valve of the first embodiment in this point.

In addition, the valve body 80A of the 5th embodiment is same with the valve body 80A of the 3rd embodiment, does not slip on the 81A of face at valve body and is formed with connection recess, different from the valve body 80 of the first embodiment in this.

What Figure 25 (A) represented is the first state that connected entrance D is covered by valve body 80A.In this first state, connected entrance D is inaccessible state, is the state be not communicated with inflow entrance A.

What Figure 25 (B) represented is second state of connected entrance D to valve shell 66 inside opening, expression be make valve body 80A swing 180 ° of later states with being rotated counterclockwise from the first state (with reference to Figure 25 (A)).In this second state, inflow entrance A is the state be communicated with connected entrance D.

When set the state that is communicated with inflow entrance A as "ON", the state that is not communicated with inflow entrance A be " closing ", and when expressing the state of connected entrance D with the form of " connected entrance D ", the desirable "ON" of cold-producing medium switching valve of the 5th embodiment, " closing " these two states.

According to the cold-producing medium switching valve of the 5th embodiment, formation that can be same by the cold-producing medium switching valve with the first embodiment, is used as two-way valve and plays function.In addition, can promptly carry out the circulation of cold-producing medium and the conversion of disconnection, the bond properties that valve body slips between face 81A and seat board 67 improves, and the reliability of suppression refrigrant leakage can be made to improve.

(the 6th embodiment)

Then, the cold-producing medium switching valve of Figure 26 and Figure 27 to the 6th embodiment is utilized to be described.In addition, in Figure 26 (A) and Figure 27 (A), for convenience of explanation, slip additional hatching on the 81C of face at the valve body contacted with seat board 67 and illustrate.

Figure 26 (A) is the key diagram of the internal structure of the first state of the cold-producing medium switching valve representing the 6th embodiment, and Figure 27 (A) is the key diagram of the internal structure of the second state of the cold-producing medium switching valve representing the 6th embodiment.

The cold-producing medium switching valve of the 6th embodiment is cross valve, is formed with inflow entrance A, connected entrance B, connected entrance C and connected entrance D.The configuration of inflow entrance A, connected entrance B, connected entrance C and connected entrance D is same with the cold-producing medium switching valve (with reference to Figure 19 (A)) of the second embodiment, omits the description.

In addition, the area that the valve body of the valve body 80C of the 6th embodiment slips face 81C is to block adjacent two connected entrances (connected entrance B and connected entrance C, or connected entrance C and connected entrance D) size, be formed with the connection recess 82C of two the connected entrances connections making to adjoin, different from the valve body of other embodiments in this.In addition, the shape of the block 84 of about 90 ° of such valve body 80C is reduced at the pendulum angle of valve body 80C with different from other embodiments in the arranging angle this point reducing valve body gear 83.

What Figure 26 (A) represented is connected entrance B is to valve shell 66 inside opening and the first state of being covered by valve body 80C of connected entrance C and connected entrance D.In this first state, inflow entrance A is communicated with connected entrance B, and connected entrance C and connected entrance D is the state be communicated with by being communicated with recess 82C.

What Figure 27 (A) represented is connected entrance D is to valve shell 66 inside opening and the second state of being covered by valve body 80C of connected entrance B and connected entrance C.In this second state, inflow entrance A is communicated with connected entrance D, and connected entrance B and connected entrance C is the state be communicated with by being communicated with recess 82C.

As the equipment of cold-producing medium switching valve possessing the 6th embodiment, be described for air-conditioning.

Figure 26 (B) is the figure be described the cold-producing medium switching valve of the 6th embodiment and the first mode of refrigerant loop, Figure 27 (B) is the figure be described the cold-producing medium switching valve of the 6th embodiment and the second pattern of refrigerant loop.

The refrigerant loop of air-conditioning possesses compressor 51, decompressing unit 54, the First Heat Exchanger 58 of indoor set, the second heat exchanger 59 of off-premises station, cross valve (the cold-producing medium switching valve of the 6th embodiment), is connected by refrigerant piping.

Be connected with inflow pipe 68 at inflow entrance A, via refrigerant piping, be connected with the high-pressure side outlet of compressor 51.Be connected with communicating pipe 69b at connected entrance B, via refrigerant piping, be connected with First Heat Exchanger 58, decompressing unit 54, second heat exchanger 59, the communicating pipe 69d that is connected with connected entrance D.Be connected with communicating pipe 69c at connected entrance C, via refrigerant piping, be connected with the low-pressure side suction inlet of compressor 51.

By the cold-producing medium switching valve of the 6th embodiment being set to the first state (with reference to Figure 26 (A)), as shown in Figure 26 (B), the cold-producing medium of the HTHP compressed by compressor 51, via inflow pipe 68, inflow entrance A, valve shell 66 inside, connected entrance B, communicating pipe 69b, flows into the First Heat Exchanger 58 (indoor set) playing function as condenser.The cold-producing medium flowing into the HTHP of First Heat Exchanger 58, by carrying out heat exchange with air (room air) and dispel the heat in First Heat Exchanger 58, heats (heating) room air.Through the cold-producing medium of First Heat Exchanger 58 through after decompressing unit 54, carry out heat insulation expansion, become low-temp low-pressure, flow into the second heat exchanger 59 (off-premises station) playing function as evaporimeter.Flow into the cold-producing medium of the low-temp low-pressure of the second heat exchanger 59 by carrying out heat exchange with air (outdoor air) and absorb heat in the second heat exchanger 59.Through the cold-producing medium of the second heat exchanger 59 via communicating pipe 69d, connected entrance D, be communicated with recess 82C, connected entrance C, communicating pipe 69c, turn back to compressor 51.Thus, air-conditioning can carry out heating running.

By the cold-producing medium switching valve of the 6th embodiment being set to the second state (with reference to Figure 27 (A)), as shown in Figure 27 (B), the cold-producing medium of the HTHP compressed by compressor 51, via inflow pipe 68, inflow entrance A, valve shell 66 inside, connected entrance D, communicating pipe 69d, flows into the second heat exchanger 59 (off-premises station) playing function as condenser.Flow into the cold-producing medium of the HTHP of the second heat exchanger 59 by carrying out heat exchange with air (outdoor air) and dispel the heat in the second heat exchanger 59.Through the cold-producing medium of the second heat exchanger 59 through after decompressing unit 54, carry out heat insulation expansion, become low-temp low-pressure, flow into the First Heat Exchanger 58 (indoor set) playing function as evaporimeter.The cold-producing medium flowing into the low-temp low-pressure of First Heat Exchanger 58, by carrying out heat exchange with air (room air) and absorb heat in First Heat Exchanger 58, cools (refrigeration) room air.Through the cold-producing medium of First Heat Exchanger 58 via communicating pipe 69b, connected entrance B, be communicated with recess 82C, connected entrance C, communicating pipe 69c, turn back to compressor 51.Thus, air-conditioning can carry out cooling operation.

According to the cold-producing medium switching valve of the 6th embodiment, formation that can be same by the cold-producing medium switching valve with the first embodiment, the cross valve being used as air-conditioning plays function.That is, by making valve body 80C swing, can change the heating running of air-conditioning and cooling operation.

(valve seat construction)

Then, Figure 28 is utilized to be described the valve seat construction of the cold-producing medium switching valve 60 of the first embodiment ~ the 6th embodiment further.

Figure 28 is the enlarged fragmentary cross section representing the second seat board 67b of cold-producing medium switching valve, valve body 80 and the section of communicating pipe 69.

As shown in figure 28, the part chimeric with the first seat board 67a of the periphery of the second seat board 67b is provided with step in the mode that the diameter on top is less than bottom, is engaged by chimeric with the first seat board 67a and mutual soldering.

In the central authorities of the second seat board 67b, break-through is provided with non-through rotor shaft hatch with the end 72, supports valve body axle 71.In addition, the intercommunicating pore 88 (being communicated with pore 87) for connecting pipe 69 (69b, 69c, 69d) is had adjacently with rotor shaft hatch 72.At this, the side of the configuration valve body 80 of intercommunicating pore 88 (being communicated with pore 87) has diameter d 0 (such as, φ about 1mm) intercommunicating pore 88, the diameter (diameter d 1) of the opposition side of the side of configuration valve body 80 expands (d1 > d0), and communicating pipe 69 is engaged by chimeric soldering.

For the intercommunicating pore 88 that connects pipe 69, in order to be configured to the valve body that is arranged at of valve body 80, to slip the connection recess 82 in face 81 corresponding for these, needs the position of the distance r (such as, about 3mm) be arranged at close to valve body axle 71.

On the other hand, usually use copper pipe as refrigerant piping communicating pipe 69, the diameter being fitted together to the connection pore 87 of soldering communicating pipe 69 be the diameter d 1 thicker than the internal diameter of intercommunicating pore 88 (such as, φ about 3mm), when soldering, in order to locate relative to the second seat board 67b, need degree of depth t2 (such as, about 2mm) to a certain degree.

At this, if set the thickness of the second seat board 67b as the degree of depth of t0, rotor shaft hatch with the end 72 be t1, the degree of depth that is fitted together to communicating pipe 69b, communicating pipe 69c, communicating pipe 69d is t2, if meet the relation of t0 > (t1+t2), just can prevent rotor shaft hatch 72 and be communicated with pore 87 and interfere, when having hole and carrying out soldering communicating pipe 69, can prevent solder from flowing into rotor shaft hatch 72, preferably.This can be set to such as: t0=5mm, t1=t2=2mm realize.

In addition, valve body axle 71 is fitted and fixed with in rotor shaft hatch 72 with the end, be not brazed, therefore there is following effect, namely, at the junction surface of valve body axle 71 and the second seat board 67b, solder can not lean out as turning shape in bight because of surface tension, valve body can not be hindered because of the solder leant out to the bonding of the second seat board 67b.

In addition, what the periphery of the valve shell 66 shown in Fig. 9 and the first seat board 67a adopted is by welding such as TIG welding (tungsten/inert gas welding) and Laser Welding fetches the formation of sealing.On the other hand, although valve body 80 and idle pulley 79 utilize the heat-resistant resins such as such as PPS (polyphenylene sulfide) to make, temperature is gone up restricted.Particularly, even if the valve body of valve body 80 slips face 81 produce small thermal deformation, also likely can not seal cold-producing medium, therefore preferably adopt the formation suppressing the temperature of valve body 80 to rise.

In the formation of the cold-producing medium switching valve 60 of present embodiment (the first ~ six embodiment), valve body 80 is configured to coaxial with rotor 70, what adopt is be placed in the valve body axle 71 at the center of seat board 67 (the first seat board 67a, the second seat board 67b) and the formation that configures of mode that swings with winding, is configured at the position farthest apart from soldered periphery.

Thus, the heat when welding is difficult to most transmit and the position that temperature not easily rises is configured with valve body 80, this effect of thermal deformation of the valve body 80 when therefore having a joint preventing valve shell 66 and the first seat board 67a.

In the first mode of the second embodiment shown in the first mode of the first embodiment shown in Figure 13 and Figure 19, cold-producing medium flows to connected entrance D from connected entrance C through being communicated with recess 82.

At this, as the sectional dimension being communicated with recess 82, preferably the width w of the connection recess 82 shown in Figure 28 is set to roughly equal or slightly large with the diameter d 0 of intercommunicating pore 88 value, the degree of depth h of the connection recess 82 shown in Figure 28 is set to roughly equal with w size.

By being set to this size, cold-producing medium from connected entrance C flow into be communicated with recess 82 time, can prevent stream from sharply expanding and producing the pressure loss, otherwise or, can prevent stream from reducing and flow velocity raises and dynamic pressure rising and valve body 80 floats, therefore preferably.

In addition, by making the diameter opening the hole on the second seat board 67b with connected entrance D accordingly larger than the diameter of opening hole on second seat board 67b corresponding with connected entrance C, cold-producing medium can be reduced from the pressure loss be communicated with when recess 82 flows to connected entrance D.In addition, by preventing the pressure increase of inside being communicated with recess 82, valve body 80 can be suppressed further to float, there is valve body and slip face 81 and reliably abut with the second seat board 67b, and seal improving this effect.

(action during hydraulic seal)

Then, Figure 29 (suitably with reference to Fig. 7, Figure 15 (B) etc.) is utilized to be described the situation creating so-called hydraulic seal in refrigerant path (refrigerant loop).At this, hydraulic seal refers to following phenomenon, that is, be full of the cold-producing medium of liquid by the refrigerant loop of closed at both ends and loop, and temperature rises and cold-producing medium carries out thermal expansion thereafter, and at refrigerant loop pipe arrangement, inner and valve inner produces high pressure.

As mentioned above, the cold-producing medium switching valve 60 of the first embodiment the 3rd pattern (with reference to Fig. 7, Figure 15 (B)) and the second embodiment cold-producing medium switching valve 60 the second pattern (with reference to Figure 17, Figure 20 (B)), the 3rd pattern (with reference to Figure 18, Figure 21 (B)) in, second refrigerant pipe arrangement 56 (and anti-condensation pipe arrangement 17) becomes the loop be sealed to form at two ends by valve body 80.

By the way, the inflow entrance A of the cold-producing medium switching valve 60 of second pattern (with reference to Fig. 8, Figure 16 (B)) of the cold-producing medium switching valve 60 of the first embodiment is communicated with connected entrance C (being communicated with L3).Therefore, second refrigerant pipe arrangement 56 (and anti-condensation pipe arrangement 17) becomes the state that the condenser 52 larger with internal volume is communicated with.Thus, the volume (condenser 52, first refrigerant piping 55, second refrigerant pipe arrangement 56, anti-condensation pipe arrangement 17) of loop can be made larger than the volume (during liquid) of the total refrigerant amount enclosed, therefore, it is possible to prevent hydraulic seal.In addition, about the 3rd refrigerant piping 57 after being closed by the connected entrance D of cold-producing medium switching valve 60 and compressor 51 and cooler 7, also hydraulic seal can be prevented because the internal volume of the cooler 7 playing function as evaporimeter is larger.

The enlarged fragmentary cross section of the second seat board 67b of the cold-producing medium switching valve 60 when Figure 29 is the pressure increase representing communicating pipe 69 side, valve body 80, the section of communicating pipe 69.

When the inside of loop is all full of liquid refrigerant, and temperature rises and cold-producing medium when carrying out thermal expansion thereafter, and the pressure P 2 of the cold-producing medium after thermal expansion will from executing communicating pipe 69 to (from diagram below upward) valve body 80.

; as utilized as described in Fig. 9 ~ Figure 12; what valve body 80 adopted is following formation; namely; rotor 70 (rotor drive division 74, rotor pinion 75) is placed in valve body 80; by the deadweight of rotor 70 (rotor drive division 74, rotor pinion 75) and the elastic force of leaf spring 86, the second seat board 67b is pressed in advance.In addition, valve body 80 acts on the pressing force having the pressure P 1 of the cold-producing medium of valve shell 66 inside to cause.

At this, when being subject to the power of the summation exceeding the pressing force that the deadweight of rotor 70 (rotor drive division 74, rotor pinion 75), the elastic force of leaf spring 86 and pressure P 1 cause when the pressure P 2 by cold-producing medium, leaf spring 86 is just compressed, as shown in figure 29, valve body 80 and rotor 70 (rotor drive division 74, rotor pinion 75) just move along valve body axle 71 to the direction of floating from the second seat board 67b.Floated by valve body 80, the cold-producing medium in communicating pipe 69 flows to valve shell 66 inside, the pressure drop in communicating pipe 69 from the gap of valve body 80 and the second seat board 67b.And when pressure drop in communicating pipe 69, by the deadweight of rotor 70 (rotor drive division 74, rotor pinion 75) and the elastic force of leaf spring 86, valve body 80 and the second seat board 67b bond.

Like this, valve body 80 can float from the second seat board 67b, therefore has the effect that can prevent the pressure anomaly in communicating pipe 69 from rising and so on.

In addition, the effect preventing the pressure anomaly in communicating pipe 69 from rising is not limited to the state of the hydraulic seal being full of liquid refrigerant in communicating pipe 69, also comprise communicating pipe 69 inside and be only the admixture of gas or gas and liquid, the thermal expansion when being risen by temperature thus pressure increase, also there is same effect.

(valve body slips face)

Then, utilize Figure 30 to slip face 81 to the valve body of valve body 80 to be further described.

Figure 30 is the figure that the valve body of the cold-producing medium switching valve 60 representing the first embodiment slips face 81 and the relation between connected entrance B, C, D, and (A) is the first state; (B) be from the first state to the state during transition of the second state; (C) be the second state; (D) state when being transition from from the second state to the third state; (E) be the third state.

As shown in Figure 30 (B), valve body 80 be rotated counterclockwise and from the first state (with reference to Figure 13 (A), Figure 30 (A)) to the second state (with reference to Figure 14 (A), Figure 30 (C)) transition time, valve body slips face 81 and does not block whole connected entrance B, C, D.Namely, connected entrance B is from the state (with reference to Figure 30 (A)) to valve shell 66 inside opening, through the state (with reference to Figure 30 (B)) of connected entrance B and connected entrance C to valve shell 66 inside opening, become the state (with reference to Figure 30 (C)) of connected entrance C to valve shell 66 inside opening.

In addition, as shown in Figure 30 (D), valve body 80 be rotated counterclockwise and from the second state (with reference to Figure 14 (A), Figure 30 (C)) to the third state (with reference to Figure 15 (A), Figure 30 (E)) transition time, valve body slips face 81 and does not block whole connected entrance B, C, D.Namely, state (with reference to Figure 30 (C)) from from connected entrance C to valve shell 66 inside opening, through the state (with reference to Figure 30 (D)) of connected entrance C and connected entrance D to valve shell 66 inside opening, become the state (with reference to Figure 30 (E)) of connected entrance D to valve shell 66 inside opening.

From the first state (with reference to Figure 13 (A), Figure 30 (A)) to (reference Figure 14 (A) of the second state, Figure 30 (C)) transition time, at least one party in connected entrance B and connected entrance C is to valve shell 66 inside opening, be communicated with inflow entrance A (the first refrigerant piping 55 and condenser 52), therefore, it is possible to make the volume (condenser 52 of loop, first refrigerant piping 55, second refrigerant pipe arrangement 56, anti-condensation pipe arrangement 17) larger than the volume (during liquid) of the total refrigerant amount enclosed, therefore, it is possible to prevent the hydraulic seal of second refrigerant pipe arrangement 56 (and anti-condensation pipe arrangement 17).

In addition, from the second state (with reference to Figure 14 (A), Figure 30 (C)) to the third state (reference Figure 15 (A), Figure 30 (E)) transition time, or, from the third state (with reference to Figure 15 (A), Figure 30 (E)) to (reference Figure 14 (A) of the second state, Figure 30 (C)) transition time, inflow entrance A, connected entrance C and connected entrance D is communicated with to valve shell 66 inside opening, therefore, it is possible to make the first refrigerant piping 55 (and condenser 52) be connected with inflow entrance A, the second refrigerant pipe arrangement 56 (and anti-condensation pipe arrangement 17) be connected with connected entrance C, the 3rd refrigerant piping 57 (and cooler pipe arrangement 7a of cooler 7) be connected with connected entrance D is communicated with.Thereby, it is possible to prevent cold-producing medium to be partial to arbitrary refrigerant piping, the generation of hydraulic seal can be reduced.

Claims

1. a refrigerator, is characterized in that,

Possess:

Be configured at the cooler in the downstream of decompressing unit;

Be configured at the compressor in the downstream of described cooler;

Be configured at the condenser in the downstream of described compressor; And

The cold-producing medium switching valve that the end side of the cold-producing medium throughput that the downstream of the upstream side of described decompressing unit, described condenser, cold-producing medium can be circulated and another side of described cold-producing medium throughput connect,

Described cold-producing medium switching valve possesses:

Connect the communicating pipe connecting portion of multiple communicating pipe respectively;

Valve seat; And

Valve body, it has the valve body contacted with described valve seat and slips face and be located at the connection recess that this valve body slips face,

Described valve body can relatively rotate relative to described valve seat,

Described valve body slip face according to described in relatively rotate and close communicating pipe described at least one,

Described connection recess according to described in relatively rotate and the mode passed through with cold-producing medium will be communicated with between at least two described communicating pipes.

2. refrigerator according to claim 1, is characterized in that,

The cold-producing medium being supplied to described cold-producing medium switching valve relatively rotates according to described valve body, by communicating pipe described at least one.

3. refrigerator according to claim 1 and 2, is characterized in that,

Have:

There is the heat insulating box of opening; And

Connect the inflow pipe connecting portion of the inflow pipe of the supply system cryogen,

Described cold-producing medium throughput is located at the periphery of described opening,

Described cold-producing medium switching valve can suppress the cold-producing medium of the cold-producing medium in described condenser in the circulation and described cold-producing medium throughput of described cooler to the circulation of described cooler simultaneously.