CN108800681A

CN108800681A - Refrigerator refrigeration system

Info

Publication number: CN108800681A
Application number: CN201710293123.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Current assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date: 2017-04-28
Filing date: 2017-04-28
Publication date: 2018-11-13

Abstract

The invention discloses a kind of refrigerator refrigeration system, including compressor, condenser and evaporator, the entrance of condenser is connected with the outlet of compressor, and the outlet of evaporator is connected with the entrance of compressor；It further include the valve gear being set between condenser and evaporator；Valve gear includes driving part, valve base part and the sliding block supported by valve base part；The bottom surface of sliding block is bonded with the top surface of valve base part；Sliding block, which has, rotates around it multiple runner holes, an open slot and the closure part of center circumferentially；The aperture in each runner hole is not exactly the same and the latus rectum of valve port of respectively less than valve base part, the circulation area of open slot are not less than the circulation area of valve port, and each runner hole and open slot are connected to the valve chamber of valve base part；Driving part can drive sliding block opposite valve seat component to rotate, so that runner hole or open slot are connected to valve port, or make closure part close port.The system can change with operating mode adjusts cold medium flux, and flow deviation is small, and system energy efficiency is high.

Description

Refrigerator refrigeration system

Technical field

The present invention relates to fluid control component technical fields, more particularly to a kind of refrigerator refrigeration system.

Background technology

With the adjustment of refrigerator Energy Efficiency Standard test request, the efficiency of refrigerator is required to improve, the throttle of current refrigerator Divide and mostly use capillary-compensated greatly, since capillary does not have the function of flow-rate adjustment, under difficult environmental conditions, refrigeration system Best operating condition cannot be reached, be affected to efficiency.

In the prior art, exist and electronic expansion valve for air conditioner is applied in refrigerator, to realize the function of flow-rate adjustment； Within air-conditioning systems, electric expansion valve uses closed-loop control, is linear discharge characteristic, and the flow in certain pulses operating point is inclined The influence of difference in systems is relatively small, and flow deviation allows to reach 20%；In addition, in air-conditioning system, compressor is not shut down, When reaching control equalized temperature, using extremely low frequency run compressor, such as the frequency of 10Hz, so, the electronics of idle call is swollen Swollen valve need not have the function of Close All.

But refrigeration for refrigerator amount is small, correspondingly, adjustable range is also small, if directly using electronic expansion valve for air conditioner, flow Control accuracy deviation will reach 20%, the flow control accuracy required considerably beyond refrigerator.

In addition, refrigerator is intermittent type refrigerating device, it is solidifying to close refrigeration for the compressor shutdown after reaching equalized temperature after shutdown Device refrigerant inflow evaporator not only contributes to energy saving, moreover it is possible to ensure more accurate temperature control, so existing electronic expansion Valve cannot be satisfied the interior leakage demand of refrigerator system.

Therefore, a kind of refrigerator refrigeration system how is designed, can change with operating mode and adjust cold medium flux, and flow deviation is small, It is a technical problem that technical personnel in the field need to solve at present.

Invention content

The object of the present invention is to provide a kind of refrigerator refrigeration system, which can change with operating mode adjusts cold medium flux, And flow deviation is small, so as to improve system energy efficiency；In addition, the system can also realize evaporator surface defrosting and increase ice Humidity in case improves the fresh-keeping effect of refrigerator.

In order to solve the above technical problems, the present invention provides a kind of refrigerator refrigeration system, including compressor, condenser and evaporation Device, the entrance of the condenser are connected with the outlet of the compressor, the entrance of the outlet and the compressor of the evaporator It is connected；It further include the valve gear being set between the condenser and the evaporator；

The valve gear includes driving part, valve base part and the sliding block supported by the valve base part；

The bottom surface of the sliding block is bonded with the top surface of the valve base part；

The sliding block, which has, rotates around it multiple runner holes, an open slot and the closure part of center circumferentially；Each institute State runner hole aperture is not exactly the same and the latus rectum of the valve port of respectively less than described valve base part, the circulation area of the open slot Not less than the circulation area of the valve port, each runner hole and the open slot are connected to the valve chamber of the valve base part；

The driving part can drive the sliding block to be rotated relative to the valve base part, so that the runner hole or described Open slot is connected to the valve port, or the closure part is made to close the valve port.

Refrigerator refrigeration system provided by the invention, between condenser and evaporator be equipped with valve gear, by valve gear come Adjust the cold medium flux for flowing into evaporator；Wherein, the part design for adjusting flow is slide block structure by valve gear, in sliding block Upper edge is circumferentially provided with the not exactly the same runner hole in multiple apertures, an open slot and closure part, wherein each runner hole and opens Mouth slot is connected to valve chamber, drives sliding block rotation that the valve port of runner hole or open slot and valve base part is made to connect by driving part It is logical, to make import and outlet, or make closure part close port, to make import be separated with outlet；In this way, passing through Sliding block opposite valve seat component rotates the work(for making valve gear have Close All to realize the connection or partition of import and outlet Can, and the case where be not in stuck failure when fully closed.

Wherein, the aperture in each runner hole is not exactly the same and latus rectum of respectively less than valve port makes in this way, being rotated by sliding block Different runner holes is connected to valve port on sliding block, and the adjusting of flow is realized with this, because runner hole is easy to process and accuracy error It can control in smaller range, it can be according to the smaller of system requirements setting, so the setting for passing through sliding block runner hole is held Easily by flow deviation control in smaller range, such as within 5%, flow control accuracy is high, and therefore, the refrigerator refrigeration system is not Cold medium flux can be only adjusted with operating mode, and degree of regulation is high, and refrigerator can be made to reach preferable operation in varying environment condition Operating mode, so as to improve system energy efficiency；Meanwhile the circulation area of open slot is not less than the circulation area of valve port, works as open slot When being connected to valve port, valve gear has the function of standard-sized sheet, and throttle degree is relatively small, so as to realize evaporator surface defrosting and Increase humidity in refrigerator, improves fridge freshness retaining effect.

Further include heat exchanger, is used to heat the refrigerant that the evaporator flows to the compressor.

The heat exchanger includes capillary and muffler, the capillary be set to the valve gear and the condenser it Between, one end of the muffler is connected with the outlet of the evaporator, and the other end is connected with the entrance of the compressor；The hair Tubule is wound in the muffler.

It further include the device for drying and filtering being set between the capillary and the condenser.

The circulation area of the capillary is not less than the circulation area of the open slot.

The driving part includes rotor part, and the rotor part includes magnet and is plugged in the shaft of the magnet, The slide block set is set to the shaft, and the rotor part can drive the sliding block to rotate when rotating.

Further include the shell for being coated at the magnet, the bottom of the shell is fixed with the valve base part；The magnet Including canister portion and partition board portion, the inner cavity of cartridge is divided into epicoele and cavity of resorption by the partition board portion, wherein the week of the cavity of resorption Wall, the shell and the valve base part are enclosed the valve chamber.

It is additionally provided with preloading spring between the sliding block and the partition board portion, so that the sliding block is tightly attached to the valve base part Top surface.

The shaft is also plugged in the valve base part, and the two clearance fit, so that the shaft can be relatively described Valve base part rotates.

Further include stop component, to limit the initial relative position of the sliding block and the valve base part.

The stop component includes being fixedly arranged on the first retainer of the valve base part and being set to the driving part Second retainer, the driving part can drive second retainer to be rotated synchronously with the sliding block；And it is configured to：

Second retainer is in the state that abuts with the side of first retainer, and the valve is closed in the closure part Mouthful；Second retainer with the sliding block rotate during, multiple runner holes, the open slot successively with the valve Mouth connection, and in rotational direction, in the state that the open slot is connected to the valve port, second retainer and described first The other side of retainer abuts.

The bottom surface of the sliding block has multiple inner groovies, corresponding with multiple positions in runner hole respectively, and each described The size of inner groovy is all higher than the corresponding runner hole.

The latus rectum of the valve port is more than 1.6mm, and the aperture in each runner hole is chosen between 0.1mm~0.3mm.

Description of the drawings

Fig. 1 is a kind of structural schematic diagram of specific embodiment of refrigerator refrigeration system provided by the present invention；

Fig. 2 is a kind of diagrammatic cross-section of specific embodiment of valve gear in Fig. 1；

Fig. 3 is a kind of structural schematic diagram of angle of sliding block shown in Fig. 2；

Fig. 4 is the structural schematic diagram of sliding block another kind angle shown in Fig. 2；

Fig. 5 is the vertical view of sliding block shown in Fig. 2；

Fig. 6 is the diagrammatic cross-section of sliding block shown in Fig. 2；

Fig. 7 is the vertical view for the sliding block that filter element is equipped in specific embodiment；

Fig. 8 is the diagrammatic cross-section for the sliding block that filter element is equipped in Fig. 7；

Fig. 9 is the structural schematic diagram of valve base part shown in Fig. 2；

Figure 10 is the vertical view of valve base part shown in Fig. 9；

Figure 11 be Figure 10 in C-C to diagrammatic cross-section；

Figure 12 is the structural schematic diagram of rotor part shown in Fig. 2；

Figure 13 is the diagrammatic cross-section of rotor part shown in Fig. 2.

In Fig. 1-13：

Compressor 101, condenser 102, evaporator 103, device for drying and filtering 104, heat exchanger 105, capillary 151, return-air Pipe 152；

Valve gear 100；

Rotor part 10, magnet 11, canister portion 111, partition board portion 112, balance hole 1121, key portion 113, the second retainer 114, Shaft 12, axle sleeve 121；

Valve base part 20, fulcrum bearing 21, valve body 22, import 221, outlet 222, valve port 223, communication port 224, axis hole 225；

Sliding block 30, runner hole 31 (31a, 31b, 31c, 31d), cavity 32, supporting table 33, keyway 34, inner groovy 35 pre-tighten Spring 36, open slot 37；

Filter element 40；

First retainer 50, latch 51；

Shell 60, inlet tube 70, outlet 80, valve chamber R1, accommodating chamber R2.

Specific implementation mode

Core of the invention is to provide a kind of refrigerator refrigeration system, which can change with operating mode adjusts cold medium flux, And flow deviation is small, so as to improve system energy efficiency；In addition, the system can also realize evaporator surface defrosting and increase ice Humidity in case improves the fresh-keeping effect of refrigerator.

In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description The present invention is described in further detail.

Referring to FIG. 1, Fig. 1 is a kind of structural schematic diagram of specific embodiment of refrigerator refrigeration system provided by the present invention.

In the embodiment, refrigerator refrigeration system includes compressor 101, condenser 102 and evaporator 103, wherein condenser 102 entrance is connected with the outlet of compressor 101, and the outlet of evaporator 103 is connected with the entrance of compressor 101.

The refrigerator refrigeration system further includes the valve gear 100 being set between condenser 102 and evaporator 103.Please join together Fig. 2 is examined, Fig. 2 is a kind of diagrammatic cross-section of specific embodiment of valve gear in Fig. 1.

In the embodiment, valve gear includes driving part and valve base part 20, wherein valve base part 20 have import 221, Outlet 222 and the valve port 223 being connected to outlet 222, import 221 are connected to the valve chamber R1 of valve gear.

The valve gear further includes the sliding block 30 supported by valve base part 20, the top surface of the bottom surface and valve base part 20 of sliding block 30 Fitting.

The sliding block 30, which has, rotates around it 31, one, the multiple runner holes circumferentially in center open slot 37 and closure part； Wherein, the aperture in each runner hole 31 is not exactly the same and latus rectum of respectively less than valve port 223, the circulation area of open slot 37 are not less than The circulation area of valve port 223；Each runner hole 31 and open slot 37 are connected to valve chamber R1.

Driving part can drive 30 opposite valve seat component 20 of sliding block to rotate, so that runner hole 31 or open slot 37 and valve port 223 connections to be connected to import 221 and outlet 222, or make closure part close port 223, to separate import 221 and go out Mouth 222.

It is appreciated that distance of the runner hole 31 away from 30 center of rotation of sliding block, runner hole 31 when sliding block 30 should be made to rotate It can be connected to valve port 223.

As above, which is equipped with valve gear 100 between condenser 102 and evaporator 103, passes through valve gear 100 flow into the cold medium flux of evaporator 103 to adjust；Wherein, the component for adjusting flow is used sliding block knot by valve gear 100 Structure realizes, 31, one, circumferentially arranged multiple runner holes open slot 37 and closure part on sliding block 30, wherein each runner hole 31 and open slot 37 be connected to valve chamber R1, the import 221 of valve base part 20 is also connected to valve chamber R1, pass through driving part driving slide Block 30 rotates that runner hole 31 or open slot 37 is made to be connected to the valve port 223 of valve base part 20, to make import 221 and outlet 222 connections, or make closure part close port 223, to make import 221 be separated with outlet 222, in this way, passing through sliding block 30 The rotation of opposite valve seat component 20 makes valve gear have Close All the connection or partition realizing import 221 with export 222 Function, and the case where be not in stuck failure when fully closed.

Wherein, the aperture in each runner hole 31 is not exactly the same and latus rectum of respectively less than valve port 223, in this way, passing through sliding block 30 Rotation, is made runner hole 31 different on sliding block 30 be connected to valve port 223, the adjusting of flow is realized with this, because runner hole 31 is easy In processing and accuracy error can control in smaller range, can according to system requirements be arranged it is smaller, so passing through cunning The setting in 30 upper runner hole 31 of block is easy to control flow deviation in smaller range, such as within 5%, flow control accuracy Height, therefore, the refrigerator refrigeration system can not only adjust cold medium flux with operating mode, and degree of regulation is high, refrigerator can be made not Reach preferable operating condition with environmental condition, so as to improve system energy efficiency；Meanwhile the circulation area of open slot 37 is not small In the circulation area of valve port 223, when open slot 37 is connected to valve port 223, valve gear has the function of that standard-sized sheet, throttle degree are opposite It is smaller, so as to realize evaporator surface defrosting and increase humidity in refrigerator, improve fridge freshness retaining effect.

The refrigerator refrigeration system further includes heat exchanger 105, is used for the refrigerant that heating evaporation device 103 flows to compressor 101, In order to avoid causing liquid hammer to compressor 101.

In specific scheme, heat exchanger 105 includes capillary 151 and muffler 152, wherein capillary 151 is set to valve Between device 100 and condenser 102, one end of muffler 152 is connected with the outlet of evaporator 103, the other end and compressor 101 Entrance be connected, capillary 151 is wound in muffler 152, as shown in Figure 1.

The structure design of the heat exchanger 105 is using the high temperature refrigerant between condenser 102 and evaporator 103 come heating evaporation The low temperature refrigerant that device 103 flows out can make refrigerant system configurations more simple and compact to avoid additional setting heating source.

It should be noted that as above after design, although being provided with capillary between condenser 102 and evaporator 103 151, it will be appreciated that the capillary 151 has not had substantive throttling function, only used as heat exchange function.

Specifically, be wound in muffler 152 in order to facilitate capillary 151, the aperture of capillary 151 can smaller setting, answer Work as understanding, flow regulating function that is too small, and influencing valve gear 100, specifically, hair can not be arranged in the aperture of capillary 151 The caliber setting of tubule 151 should make its circulation area be not less than the circulation area of open slot 37, in order to avoid influence valve gear 100 Standard-sized sheet characteristic.

In specific scheme, device for drying and filtering 104 is additionally provided between condenser 102 and capillary 151, to filter refrigerant In impurity.

Accurate adjust of the refrigerator refrigeration system of the present invention, cold medium flux mainly passes through what valve gear 100 was realized, below Each component of valve gear 100 is illustrated emphatically.Please also refer to Fig. 3-6, Fig. 3 is a kind of angle of sliding block shown in Fig. 2 Structural schematic diagram；Fig. 4 is the structural schematic diagram of sliding block another kind angle shown in Fig. 2；Fig. 5 is the vertical view of sliding block shown in Fig. 2 Figure；Fig. 6 is the diagrammatic cross-section of sliding block shown in Fig. 2.

In specific embodiment, multiple runner holes 31 are circumferentially arranged around the center of rotation of sliding block 30 in arcuation, open slot 37 A runner hole 31 close to outer end is arranged, in this way, the position between open slot 37 and the runner hole 31 of another outer end forms sliding block 30 closure part.

In scheme shown in Fig. 4 and Fig. 5, sliding block 30 is specifically set there are four runner hole 31, with visual angle shown in Fig. 5, along suitable Clockwise, four runner holes 31 are followed successively by 31a, 31b, 31c and 31d, and open slot 37 is arranged close to runner hole 31d, sliding block 30 Circumferential position between upper open slot 37 and runner hole 31a is closure part.

In illustrated scheme, the aperture of four runner holes 31a, 31b, 31c and 31d are incremented by successively, and two neighboring runner hole Angle between 31 is equal, that is to say, that on the arc section in arrangement runner hole 31, multiple runner holes 31 are uniformly arranged；Specifically Ground, angle of the angle also between adjacent two runner hole 31 between the center and runner hole 31d of open slot 37 are equal；It sets in this way After meter, sliding block 30 often turns over identical angle, i.e., is once adjusted to flow, convenient for the operation to valve gear.

As above, the aperture of the structure design in multiple runner holes 31, number and each runner hole 31 to runner hole 31 is easy control System, convenient for controlling flow, to meet the demand for control of refrigerator and similar small refrigeration systems.Such as a kind of specific embodiment In, the aperture of runner hole 31a, 31b, 31c and 31d are set as 0.15mm, 0.18mm, 0.21mm and 0.24mm successively.

It is appreciated that open slot 37 is set to the bottom surface of sliding block 30, when sliding block 30 is bonded with valve base part 20, in open slot 37 position, there are gap between sliding block 30 and valve base part 20, the size in the gap is the depth of open slot 37, works as sliding block 30 turn to open slot 37 and 223 position of valve port to it is corresponding when valve chamber R1 in refrigerant can enter open slot 37 by the gap, Then outlet 222 is flowed by valve port 223.When specific setting, to realize that the defrosting requirement of refrigerator, the latus rectum of valve port 223 are larger Setting, so as to reduce restriction effect as far as possible, usually not less than 1.6mm settings are correspondingly arranged the circulation area of open slot 37.

It is appreciated that in practice, when arrangement, the aperture in each runner hole 31 can be irregular, in addition, in arrangement runner hole 31 Arc section on, multiple runner holes 31 can arrange uneven.Only in contrast, rule, uniformly arrangement as illustrated, more Convenient for the control to product.

Further, with reference to figure 4, multiple inner groovies 35 are offered in the bottom surface of sliding block 30, respectively with multiple runner holes 31 Position correspond to, and the size of each inner groovy 35 is all higher than corresponding runner hole 31.

As above after design, when 30 opposite valve seat component 20 of sliding block rotates, end and the valve base part in runner hole 31 are avoided 20 direct frictions, rotation abrasion that can be between 20 top surface of 30 bottom surface of anti-limited slip block and valve base part block runner hole 31, can be true Protect the reliability of product flow control.

Specifically, it is easy to process, the size of each inner groovy 35 can be unified, and in scheme shown in Fig. 4, each inner groovy 35 is The consistent counter bore structure in aperture.It should be appreciated that the shape of inner groovy 35 is unlimited, as long as end and the valve in runner hole 31 can be avoided 20 direct friction of base member.

Please also refer to Fig. 7-8, Fig. 7 is the vertical view for the sliding block that filter element is equipped in specific embodiment；Fig. 8 is figure The diagrammatic cross-section of the sliding block of filter element is equipped in 7.

The valve gear is additionally provided with filter element 40, the refrigerant for filtering the runner hole 31 for flowing through sliding block 30, to avoid stream Road hole 31 influences the performance of product by foreign matters from being blocked.

Wherein, the filter capacity of filter element 40 can according to the aperture in runner hole 31 in conjunction with other use demands come really It is fixed, by taking the specific aperture value in aforementioned each runner hole 31 as an example, it is known that the pore diameter range in each runner hole 31 0.1mm~0.3mm it Between, so in application, filter element 40 can at least filter out the impurity and foreign matter more than 0.1mm.When specific setting, filter house The mesh number of part 40 is more than 100 mesh, to meet basic use demand.

Specifically, filter element 40 can be sintered by tin bronze ball or stainless steel ball and be formed, can also be by multilayer stainless steel Screen cloth is made.

Obviously, for the flow direction of refrigerant, the upstream position in the runner hole 31 of sliding block 30 should be arranged in filter element 40.

In specific scheme, the top of sliding block 30 is equipped with cavity 32, by filter element 40 in the cavity 32, and mistake Filtering component 40 and the bottom wall of the cavity 32 has preset distance, in this way, forming accommodating chamber between filter element 40 and cavity 32 R2, filtered refrigerant flow into runner hole 31 by accommodating chamber R2, it is clear that each runner hole 31 should connect with accommodating chamber R2 It is logical.

Preset distance between 32 bottom wall of filter element 40 and cavity can be arranged as needed.

More specifically, the medium position in 32 bottom of cavity is equipped with the supporting table 33 of support filter element 40, Fig. 3 can refer to Understood with Fig. 6 so that it is convenient to the positioning in cavity 32 of filter element 40.

As shown in figure 8, in this way after setting, aforementioned accommodating chamber R2 is specially the side wall of the bottom wall of filter element 40, cavity 32 And the annular chamber that bottom wall and the periphery wall of supporting table 33 are enclosed.

It should be pointed out that in the program, by filter element 40 in sliding block 30, but sliding block 30 is in opposite valve seat When component 20 rotates, filter element 40 can rotate therewith, and can not also rotate, this can't influence filter element 40 Filtration.

It is provided herein to understand together with reference to figure 9-11 with the matched valve base part of sliding block, wherein Fig. 9 is in Fig. 2 The structural schematic diagram of shown valve base part；Figure 10 is the vertical view of valve base part shown in Fig. 9；Figure 11 be Figure 10 in C-C to cut open Face schematic diagram.

In the embodiment, the bottom of valve base part 20 offer import 221 and outlet 222, respectively with inlet tube 70, go out Mouth pipe 80 connects.

Valve port 223 is opened in the top of valve base part 20, is connected to outlet 222, is offered in the side of valve base part 20 The communication port 224 being connected to import 221, and the communication port 224 is connected to valve chamber R1.

It is appreciated that import 221 is not connected to directly with the runner hole 31 of sliding block 30 or open slot 37.

It should be appreciated that after valve base part 20 is as above arranged, the position in the runner hole 31 of sliding block 30 should be with 223 position of valve port Corresponding, so that in 30 rotation process of sliding block, runner hole 31 can be connected to valve port 223, be then connected to outlet 222.

In this way, refrigerant is flowed into from inlet tube 70, import 221, communication port 224 through valve base part 20 flow into valve chamber R1, then Runner hole 31 or open slot 37 are flowed by filter element 40, is flowed out from outlet 80 through valve port 223, outlet 222.

In specific scheme, valve base part 20 includes fulcrum bearing 21 and fixed valve body 22 thereon, and the two fission is set It sets, can fix by welding, it is not only simple but also reliable.

Valve port 223 and communication port 224 are opened on valve body 22, that is to say, that sliding block 30 is directly pasted with valve body 22 It closes, opposite valve seat body 22 rotates.

Specifically, import 221 and outlet 222 can be opened on valve body 22, setting and valve seat in fulcrum bearing 21 Valve body 22 is embedded in the through-hole of fulcrum bearing 21 by 22 compatible through-hole of body admittedly.

Certainly, import 221 and outlet 222 can be opened in fulcrum bearing 21, and valve body 22 is fixed on fulcrum bearing 21 Top surface, and keep its valve port 223 and communication port 224 corresponding with outlet 222 and 221 position of import respectively.

Certainly, import 221 and outlet 222 a part of can be also arranged on valve body 22, and another part is arranged in fulcrum bearing On 21.

In addition, valve base part 20 can also be set as integral structure, in contrast, separate structure it is easy to process and reduce at This.

It is the structural schematic diagram of rotor part shown in Fig. 2 please also refer to Figure 12-13, Figure 12；Figure 13 is shown in Fig. 2 The diagrammatic cross-section of rotor part.

In the embodiment, the driving part that driving sliding block 30 rotates is motor, specifically includes rotor part 10 and coil part Part.

Wherein, rotor part 10 includes magnet 11 and the shaft 12 for being plugged in magnet 11, and the lower end of shaft 12 is sequentially inserted into Filter element 40 and sliding block 30 when work, drive rotor part 10 to rotate by external coil component, and band movable slider 30 is opposite Valve body 22 rotates.

It, can be relatively solid with shaft 12 by sliding block 30 in order to be rotated together with movable slider 30 when rotor part 10 being enable to rotate It is fixed, for example sliding block 30 is made to be combined into interference fit with matching for shaft 12.

Certainly, sliding block 30 and magnet 11 can be also relatively fixed, in the present embodiment, is arranged between magnet 11 and sliding block 30 There is clamping structure, so that sliding block 30 can be rotated together with magnet 11.

Specifically, the lower end of magnet 11 has the key portion 113 of protrusion, is provided on sliding block 30 and coordinates with key portion 113 Keyway 34 makes sliding block 30 be relatively fixed with magnet 11 by being fixed for key portion 113 and keyway 34.In addition, the key of magnet 11 113 inlay card of portion plays the role of sliding block 30 being pressed in valve body 22, it can be ensured that sliding block 30 to a certain extent in keyway 34 It is bonded with valve body 22, prevents refrigerant from being flowed into from the joint place of the two.

The valve gear further includes the shell 60 for being coated at magnet 11, and bottom and the valve base part 20 of shell 60 are fixed, specifically Into the embodiment, the bottom of shell 60 is fixed with the fulcrum bearing 21 of valve base part 20.

Specifically, the top of fulcrum bearing 21 has step surface upward, in order to the positioning with shell 60.

In specific scheme, magnet 11 includes canister portion 111 and partition board portion 112, wherein partition board portion 112 will be in canister portion 111 Chamber is divided into epicoele and cavity of resorption, is fixed in this way, rotor 12 is specifically inserted with partition board portion 112, the top of rotor 12 can connecting bushing 121, axle sleeve 121 and the inner roof wall of shell 60 coordinate.

Wherein, the peripheral wall of 11 cavity of resorption of magnet, shell 60 and fulcrum bearing 21 are enclosed valve chamber R1, that is to say, that the program In, the cavity of resorption of magnet 11 is a part of valve chamber R1, can shorten the axial dimension of valve gear in this way, is conducive to its miniaturization.

In specific scheme, preloading spring 36 is equipped between partition board portion 112 and sliding block 30, so that sliding block 30 is tightly attached to valve The top surface of pedestal 22.

In scheme shown in Fig. 1, sliding block 30 be equipped with filter element 40 in the case of, preloading spring 36 really and filter house Part 40 abuts.

In specific scheme, it is additionally provided with more than one balance hole 1121 in the partition board portion 112 of magnet 11, the balance hole 1121 connection epicoeles and cavity of resorption avoid about 11 vibration of magnet to keep the pressure balance of 11 upper and lower chamber of magnet.

In specific scheme, to ensure that the center of rotation of 30 opposite valve seat component 20 of sliding block does not change, to ensure to slide In 30 rotation process of block, each runner hole 31 can be connected to outlet 222, and the lower end of shaft 12 is also plugged in valve base part 20, To ensure the concentricity of 20 three of rotor part 10, sliding block 30 and valve base part.

Specifically, valve body 22 is equipped with the axis hole 225 coordinated with shaft 12, it is clear that shaft 12 is matched with 225 gap of axis hole It closes, so that shaft 12 can be rotated relative to valve base part 20.

The valve gear further includes stop component, to limit the initial relative position of sliding block 30 and valve base part 20, is convenient for The determination of benchmark when the debugging and application of product.

In specific scheme, stop component includes being fixedly arranged on the first retainer 50 of valve base part 20 and being set to driving portion Second retainer 114 of part, driving part can drive the second retainer 114 to be rotated synchronously with sliding block 30；And it is configured to：

Second retainer 114 is in the side of the first retainer 50 and abuts state, closure part close port 223；Second During retainer 114 is rotated with sliding block 30, each runner hole 31 and open slot 37 are sequentially connected to valve port 223, and along rotation Direction, in the state that open slot 37 is connected to valve port 223, the second retainer 114 is abutted with the other side of the first retainer 50.

In specific scheme, the first retainer 50 is elastic component, in this way, the second retainer 114 with its against when there is bullet Property buffering, avoid that abrasion is caused after longtime running to cause position configuration inaccurate.

Specifically, the first retainer 50 can be rubber, be fixed in fulcrum bearing 21 by latch 51, wherein stop The top of pin 51 is provided with anti-dropout boss, in case the first retainer 50 is deviate from.

Refrigerator refrigeration system provided by the present invention is described in detail above.Specific case pair used herein The principle of the present invention and embodiment are expounded, and the explanation of above example is only intended to help to understand method of the invention And its core concept.It should be pointed out that for those skilled in the art, before not departing from the principle of the invention It puts, can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the guarantor of the claims in the present invention It protects in range.

Claims

1. refrigerator refrigeration system, including compressor (101), condenser (102) and evaporator (103), the condenser (102) Entrance is connected with the outlet of the compressor (101), the entrance of the outlet and the compressor (101) of the evaporator (103) It is connected；It is characterized in that, further including the valve gear (100) being set between the condenser (102) and the evaporator (103)；

The valve gear (100) includes driving part, valve base part (20) and the sliding block supported by the valve base part (20) (30)；

The bottom surface of the sliding block (30) is bonded with the top surface of the valve base part (20)；

The sliding block (30) has multiple runner holes (31), an open slot (37) and the closure of the center that rotates around it circumferentially Portion；The aperture of each runner hole (31) is not exactly the same and the latus rectum of the valve port (223) of respectively less than described valve base part (20), The circulation area of the open slot (37) is not less than the circulation area of the valve port (223), each runner hole (31) and described Open slot (37) is connected to the valve chamber of the valve base part (20) (R1)；

The driving part can drive the sliding block (30) to be rotated relative to the valve base part (20), so that the runner hole (31) or the open slot (37) is connected to the valve port (223), or the closure part is made to close the valve port (223).

2. refrigerator refrigeration system according to claim 1, which is characterized in that further include heat exchanger (105), be used to heat The evaporator (103) flows to the refrigerant of the compressor (101).

3. refrigerator refrigeration system according to claim 2, which is characterized in that the heat exchanger (105) includes capillary (151) it is set between the valve gear (100) and the condenser (102) with muffler (152), the capillary (151), One end of the muffler (152) is connected with the outlet of the evaporator (103), and the other end enters with the compressor (101) Mouth is connected；The capillary (151) is wound in the muffler (152).

4. refrigerator refrigeration system according to claim 3, which is characterized in that further include being set to the capillary (151) Device for drying and filtering (104) between the condenser (102).

5. refrigerator refrigeration system according to claim 3, which is characterized in that the circulation area of the capillary (151) is not Less than the circulation area of the open slot (37).

6. according to claim 1-5 any one of them refrigerator refrigeration systems, which is characterized in that the driving part includes rotor Component (10), the rotor part (10) include magnet (11) and are plugged in the shaft (12) of the magnet (11), the sliding block (30) it is sheathed on the shaft (12), the rotor part (10) can drive the sliding block (30) to rotate when rotating.

7. refrigerator refrigeration system according to claim 6, which is characterized in that further include be coated at the magnet (11) outer Shell (60), the bottom of the shell (60) and the valve base part (20) are fixed；The magnet (11) include canister portion (111) and every The inner cavity of cartridge (111) is divided into epicoele and cavity of resorption by plate portion (112), the partition board portion (112), wherein the cavity of resorption Peripheral wall, the shell (60) and the valve base part (20) be enclosed the valve chamber (R1).

8. refrigerator refrigeration system according to claim 7, which is characterized in that the sliding block (30) and the partition board portion (112) preloading spring (36) is additionally provided between, so that the sliding block (30) is tightly attached to the top surface of the valve base part (20).

9. refrigerator refrigeration system according to claim 6, which is characterized in that the shaft (12) is also plugged in the valve seat Component (20), and the two clearance fit, so that the shaft (12) can be rotated relative to the valve base part (20).

10. according to claim 1-5 any one of them refrigerator refrigeration systems, which is characterized in that further include stop component, to Limit the initial relative position of the sliding block (30) and the valve base part (20).

11. refrigerator refrigeration system according to claim 10, which is characterized in that the stop component is described including being fixedly arranged on The first retainer (50) of valve base part (20) and the second retainer (114) for being set to the driving part, the driving portion Part can drive second retainer (114) to be rotated synchronously with the sliding block (30)；And it is configured to：

Second retainer (114) is in the state that abuts with the side of first retainer (50), and the closure part is closed The valve port (223)；During second retainer (114) rotates with the sliding block (30), multiple runner holes (31), the open slot (37) is connected to the valve port (223) successively, and in rotational direction, the open slot (37) with it is described In the state of valve port (223) connection, second retainer (114) abuts with the other side of first retainer (50).

12. according to claim 1-5 any one of them refrigerator refrigeration systems, which is characterized in that the bottom surface of the sliding block (30) It is corresponding with multiple positions of runner hole (31) respectively with multiple inner groovies (35), and the ruler of each inner groovy (35) It is very little to be all higher than the corresponding runner hole (31).

13. according to claim 1-5 any one of them refrigerator refrigeration systems, which is characterized in that the latus rectum of the valve port (223) More than 1.6mm, the aperture of each runner hole (31) is chosen between 0.1mm~0.3mm.