CN110274052A

CN110274052A - Fluid switching device and heat management system

Info

Publication number: CN110274052A
Application number: CN201810204746.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Hangzhou Sanhua Research Institute Co Ltd
Current assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date: 2018-03-13
Filing date: 2018-03-13
Publication date: 2019-09-24
Anticipated expiration: 2038-03-13
Also published as: CN110274052B

Abstract

The present invention discloses a kind of fluid switching device and heat management system, and fluid switching device includes main valve body, main valve and sliding block, and the first wall of main valve includes the first valve port, the second valve port and third valve port, and main valve body includes the import being oppositely arranged with the first wall；Heat management system includes fluid switching device, to be conducive to simplify the layout of device in heat management system.

Description

Fluid switching device and heat management system

[technical field]

Switching device is flowed to the present invention relates to fluid control technology field more particularly to fluid and there is above-mentioned switching dress The heat management system set.

[background technique]

Refrigerant pipeline on-off, control refrigerant flow direction are controlled using shut-off valve in heat management system.Under normal circumstances, heat pipe Reason system needs multiple shut-off valve control refrigerant flow directions, and then realizes that the realization temperature of air-conditioning system is adjusted, in heat management system Be arranged multiple shut-off valves not only can control device control shut-off valve port number and harness, shut-off valve occupies heat management system Inner space increases the layout difficulty of device in heat management system.Therefore, it is necessary to be improved to existing technology, to have Conducive to the above technical problem of solution.

[summary of the invention]

The purpose of the present invention is to provide multi-fluid switching device and heat management systems, to be conducive to simplify heat management system The layout of device in uniting.

A kind of fluid switching device, including main valve body, main valve and sliding block, the main valve and the main valve body Inner wall it is relatively fixed, the main valve includes the first wall, and first wall is provided with the first valve port, the second valve port and the Three valve ports, along the first direction of first wall, second valve port be located at first valve port and the third valve port it Between；The main valve body includes import, and the import being capable of the relatively described main valve cunning towards first wall, the sliding block It moves and there is the first operating position and the second operating position；First wall further includes the first partition and the second partition, along described The first direction of first wall, first partition is set between first valve port and second valve port, between described second Wall is set between second valve port and the third valve port；

The sliding block includes the first valve portion and the second valve portion, first direction of first valve portion along first wall Length is greater than the third valve port along the bore of the first direction of first wall, and second valve portion is along first wall The length of first direction is greater than first valve port along the bore of the first direction of first wall；First valve portion is along institute The length for stating the second direction of the first wall is greater than the third valve port along the bore of the second direction of first wall, and described the Two valve portions are greater than first valve port along the mouth of the second direction of first wall along the length of the second direction of first wall Diameter.

A kind of heat management system, the heat management system include that compressor, indoor heat exchanger, indoor evaporator, outdoor are changed Hot device and orifice union, the heat management system further include fluid switching device, and the fluid switching device includes sliding block, cunning Seat and import, the first wall of the slide are provided with the first valve port, the second valve port, third valve port, and the sliding block includes the first valve Portion and the second valve portion, first valve portion are greater than the third valve port described in along the length of the first direction of first wall The bore of the first direction of first wall, second valve portion are greater than described first along the length of the first direction of first wall Bore of the valve port along the first direction of first wall；First valve portion is big along the length of the second direction of first wall In the third valve port along the bore of the second direction of first wall, second party of second valve portion along first wall To length be greater than first valve port along the second direction of first wall bore；

The import and the indoor heat exchanger outlet, first valve port are connected to the outdoor heat exchanger, institute It states the second valve port and is directly or indirectly connected to compressor inlet, the third valve port and the outdoor heat exchanger and the interior The connecting pipeline of evaporator is connected to, and further includes restricting element between the third valve port and the indoor evaporator；The sliding block It can slide and there is the first operating position and the second operating position, the first operating position of the corresponding sliding block, described in definition First working condition of fluid switching device, the second operating position of the corresponding sliding block, defines the fluid switching device Indoor heat exchanger described in second working condition and the indoor evaporator can give indoor carry out heat supply according to indoor duty requirements And cooling supply；

When the heat management system freezes, the sliding block is in the first operating position, the import and first valve port Connection, the third valve port are connected to second valve port；

When the heat management system heats, the sliding block be in the second operating position, the third valve port with it is described into Mouth connection, first valve port are connected to second valve port, and second valve port is not connected to the import.

A kind of heat management system, the heat management system include compressor, indoor heat exchanger, outdoor heat exchanger and throttling Element, the heat management system further include fluid switching device, and the fluid switching device includes sliding block, slide and import, institute The first wall for stating slide is provided with the first valve port, the second valve port, third valve port, and the sliding block includes the first valve portion and the second valve Portion, first valve portion are greater than the third valve port along the of first wall along the length of the first direction of first wall The bore in one direction, second valve portion are greater than first valve port described in along the length of the first direction of first wall The bore of the first direction of first wall；First valve portion is greater than the third along the length of the second direction of first wall For valve port along the bore of the second direction of first wall, second valve portion is big along the length of the second direction of first wall In first valve port along the bore of the second direction of first wall；

The outlet of the import and the compressor, the first end of first valve port and the outdoor heat exchanger Mouth connection, second valve port are directly or indirectly connected to compressor inlet, the third valve port and the indoor heat exchanger First port connection, the second port of the indoor heat exchanger pass through the second port of restricting element and the outdoor heat exchanger Connection；

The indoor heat exchanger can give indoor carry out heat supply and cooling supply according to indoor duty requirements；

When the heat management system freezes, the import is connected to first valve port, second valve port and described the The connection of three valve ports；

When the heat management system heats, third valve port and the inlet communication, first valve port and second valve Mouth connection.

The sliding block of fluid switching device can be slided with respect to main valve, the first valve portion along the first wall first direction and The length of second direction is all larger than third valve port along the first direction of the first wall and the bore of second direction, and the second valve portion is along The first direction of one wall and the length of second direction are all larger than the first valve port along the first direction of the first wall and the mouth of second direction Diameter, the fluid switching device are conducive to simplify the layout of device in heat management system.

[Detailed description of the invention]

Fig. 1 is a kind of schematic diagram of the first working condition of fluid switching device first embodiment；

Fig. 2 is a kind of schematic diagram of the second working condition of fluid switching device first embodiment；

Fig. 3 is the elevational schematic view of sliding block in Fig. 1；

Fig. 4 is the schematic top plan view of sliding block when sliding block is located at the first operating position and the second operating position,

Wherein, the upper figure of Fig. 4 is schematic diagram when sliding block is located at the first operating position, and Fig. 4 following figure is sliding

Block is located at schematic diagram when the second operating position；

Fig. 5 is another embodiment signal of sliding block and main valve at the first operating position and the second operating position Figure, wherein the upper figure of Fig. 5 is schematic diagram when sliding block is located at the first operating position, and Fig. 5 following figure is that sliding block is located at the second working position Schematic diagram when setting；

Fig. 6 is the another embodiment signal of sliding block and main valve at the first operating position and the second operating position Figure, wherein the upper figure of Fig. 6 is schematic diagram when sliding block is located at the first operating position, and Fig. 6 following figure is that sliding block is located at the second working position Schematic diagram when setting；

Fig. 7 is the 4th embodiment signal of sliding block and main valve at the first operating position and the second operating position Figure, wherein the upper figure of Fig. 7 is schematic diagram when sliding block is located at the first operating position, and Fig. 7 following figure is that sliding block is located at the second working position Schematic diagram when setting；

Fig. 8 is a kind of one schematic illustration of heat management system；

Fig. 9 is a kind of schematic diagram of the first working condition of fluid switching device second embodiment；

Figure 10 is a kind of schematic diagram of the second working condition of fluid switching device second embodiment；

Figure 11 is the elevational schematic view of sliding block in Fig. 9；

Figure 12 is that the vertical view of sliding block when sliding block is located at the first operating position and the second operating position in Fig. 9 is shown

It is intended to, wherein the upper figure of Figure 12 is schematic diagram when sliding block is located at the first operating position, Figure 12

The following figure is schematic diagram when sliding block is located at the second operating position；

Figure 13 is another embodiment party of sliding block and main valve at the first operating position and the second operating position in Fig. 9 Formula schematic diagram, wherein the upper figure of Figure 13 is schematic diagram when sliding block is located at the first operating position, and Figure 13 following figure is that sliding block is located at the Schematic diagram when two operating positions；

Figure 14 is the another embodiment party of sliding block and main valve at the first operating position and the second operating position in Fig. 9 Formula schematic diagram, wherein the upper figure of Figure 14 is schematic diagram when sliding block is located at the first operating position, and Figure 14 following figure is that sliding block is located at the Schematic diagram when two operating positions；

Figure 15 be sliding block between the first operating position and the second operating position when a schematic diagram；

Figure 16 be sliding block between the first operating position and the second operating position when another schematic diagram；

Figure 17 is a kind of another schematic illustration of heat management system；

Figure 18 is a kind of another schematic illustration of heat management system.

[specific embodiment]

Please refer to Fig. 1-Figure 18.Fluid switching device includes pilot valve 1 and main valve 2, each specific position of pilot valve 1 and main valve 2 Respectively by pipeline connection, when pilot valve 1 acts, main valve 2 allows hand over the circulating direction of its internal refrigerant.Main valve 2 includes main valve Body 21, main valve body 21 include end cap 211 and hollow tube 212, and end cap 211 is set to 212 both ends port of hollow tube, are closed hollow Pipe both ends port, end cap are provided with the interface being connected to pilot valve 1, and hollow tube includes the first interface portion for being set to hollow tube 2121, second interface portion 2122, third interface portion 2123 and import 2124, first interface portion, second interface portion and third interface Portion is located at hollow tube the same side, and along hollow tube axial direction or along the axial direction of main valve body, first interface portion, second are connect Oral area and third interface portion are arranged successively, in other words, along hollow tube axial direction, second interface portion be set to first interface portion, Between third interface portion；Import is substantially oppositely arranged with second interface portion.Main valve includes main valve chamber 22, the wall packet of main valve chamber 22 Include the wall and end cap wall of hollow tube.Main valve further includes the first communicating pipe 201, the second communicating pipe 202,203 and of third connecting pipe 4th communicating pipe 204, wherein the first communicating pipe 201, the second communicating pipe 202 and third connecting pipe 203 with connect respectively with first Oral area 2121, second interface portion 2122 and third interface portion 2123 are connected and are connected to main valve chamber, the 4th communicating pipe and import 2124 connect and are connected to main valve chamber 22；When practical application fluid switching device, the 4th communicating pipe 204 can arrange with compressor Port connection, can be connected to, the first communicating pipe 201 can connect with a heat exchanger the second communicating pipe 202 with compressor air suction mouth Logical, third connecting pipe 203 can be connected to another heat exchanger.

Main valve 2 further includes main valve 23, and main valve 23 is set to main valve chamber 22, and is fixedly installed with hollow tube, tool Body, main valve 23 includes the first wall 234 and the second wall, and the first wall and the second wall are oppositely arranged, and the first wall 234 is substantially Rectangle, the second wall of main valve 23 and the corresponding portion inner wall shape of hollow tube are roughly the same, the second wall of main valve 23 Contacted with the internal partial wall of hollow tube, and with the inner wall of hollow tube by welding, the modes such as be bonded are fixed as one；Main valve valve Seat is oppositely arranged with import, specifically, the first wall of main valve towards import import in other words towards main valve the One wall；Main valve 23 includes the first valve opening, the second valve opening and the third valve opening through main valve, in other words, the first valve opening The first wall and the second wall are provided with opening respectively, similarly, the second valve opening and third valve opening are respectively in the first wall and the second wall It is provided with opening.Wherein, along hollow tube axial direction, wherein the first valve opening, the second valve opening and third valve opening are arranged successively, the One valve opening is connected to first interface portion and is connected to the first communicating pipe 201, and the second valve opening is connected to second interface portion and with The connection of two communicating pipes 202, third valve opening are connected to third interface portion and are connected to third connecting pipe 203, in other words the first connection Pipe, the second communicating pipe and third connecting pipe pass through the first valve opening, the second valve opening and third valve opening portion corresponding to main valve chamber respectively Position connection.First valve opening, the second valve opening and third valve opening are respectively set to the first valve port, the second valve port in the opening of the first wall With third valve port, along the axial direction of main valve body, the second valve port is between the first valve port and third valve port, above three valve The bore of mouth can be equal or different.The center at the center of the first valve port, the center of the second valve port and third valve port is located substantially at Same straight line, in technical solution of the present invention, the first valve opening or the second valve opening or third valve opening can be regular hole, as circular hole, Elliptical aperture, square hole etc. are also possible to irregular hole, and correspondingly, the first valve port or the second valve port or third valve port can be rule Mouthful, if round mouth, oval mouth or square opening are alternatively, be also possible to irregular mouth.The center of first valve port, the second valve port center and The center of third valve port is located substantially at the transverse axis of the first wall, it is recognised that the first valve port, the second valve port and third valve port Can not also be in same straight line, e.g. at the center of the first wall, the center of any valve port can deviate the cross of the first wall of main valve To axis.It is recognised that the first valve port, the second valve port and third valve port the center of the first wall can not also in same straight line, Such as, the center of any valve port can deviate the transverse axis of the first wall；The wall of main valve chamber also includes the wall of main valve.It is rear Continuous description is convenient, defines the glide direction of sliding block, the axial direction of the axial direction of hollow tube or main valve body and the first wall First direction is identical, and further, the first direction that the left and right directions of the signal as shown in Figure 1, Figure 2 is defined as the first wall is identical, Substantially where the first wall in face, the direction definition vertical with the first direction of the first wall is the second direction of the first wall；Separately Outside, the normal direction for defining the first wall is up and down direction, wherein sliding block is located at the top of main valve.First wall further includes One partition 2341 and the second partition 2342, along the first direction of the first wall, the first partition 2341 is set to 231 He of the first valve port Between second valve port 232, the second partition 2342 is set between the second valve port 232 and third valve port 233.In skill of the invention Art scheme, along the first direction of the first wall, the bore of valve port refers to the maximum caliber of the valve port.Main valve 2 further includes first, second Piston 24, sliding block 25 and connecting rod 26, first piston, second piston 24 are fixedly connected with connecting rod two end, and sliding block 25 is limited in connecting rod 26, in connecting rod by the pressure difference effect at piston both ends and when acting, sliding block 25 under piston driving with the movement of connecting rod and Sliding.25 following side of sliding block is contacted with the first wall of main valve and opposite main valve 23 slides, main valve 23 and sliding Block 25 partners kinematic pair.Wherein, main valve chamber is divided by sliding block 25 is not attached to logical the first chamber and the second chamber 220 relatively, sliding The chamber formed between block and main valve is defined as the second chamber, and the remainder of main valve chamber is defined as the first chamber, wherein at least The second valve port of part is located at below the second chamber, and the second valve port is connected to the second chamber, and import is connected to the first chamber.First, second is living Plug 24 and the relative motion of main valve body inner wall, partner kinematic pair, wherein the first chamber is divided into a left side by the first, second piston 24 Chamber 221, right chamber 222 and lumen 223, left chamber are to illustrate the left side of 1 and 2 left side first pistons, and right chamber is 1 and 2 the right the of diagram The right side of one piston, for lumen between first piston and second piston, the spatial position of these three chambers can be with the first work Plug, connecting rod, sliding block movement and change；Specifically, import, main valve and sliding block are located at first piston and second piston Between, import is connected to lumen.It is recognised that lumen is higher-pressure region when the 4th communicating pipe was connected to the exhaust outlet of compressor, It is set to main valve opposite side 4th communicating pipe, high pressure is conducive to the sealing of sliding block and main valve.

Fig. 9, Figure 10 and Figure 11 and Fig. 1, Fig. 2 and Fig. 3 are please referred to, sliding block 25 includes the first valve portion 251, the second valve portion 252, third valve portion 253, the 4th valve portion 254 and main part 255, wherein the following side of the first valve portion, the second valve portion downside Portion, the following side of third valve portion, the 4th valve portion following side contacted with the first wall of main valve and being capable of opposite main valve valve Seat sliding.Main part 255 is structure as a whole with the first valve portion, the second valve portion, third valve portion and the 4th valve portion.Specifically, first Valve portion 251, the second valve portion 252, third valve portion 253, the 4th valve portion 254 are distributed in 220 surrounding of the second chamber, and main part 255 is located at The top of second chamber, part main valve are located at the lower section of the second chamber, in other words, main part, the first valve portion, the second valve portion, Three valve portions and the 4th valve portion and main valve are encircled into the second chamber 220 jointly.Specifically, along the glide direction of sliding block, the first valve Portion is located at 220 right side of the second chamber, and for opposite second valve portion adjacent to third valve port, the second valve portion is located at the left side of the second chamber 220, phase To the first valve portion adjacent to the first valve port；Along the second direction of the first wall, third valve portion 253 and the 4th valve portion 254 are in second The opposite sides of chamber, and between the first valve portion and the second valve portion.First valve portion, 251 following side is substantially rectangular, and first Valve portion includes first end 2512, defines first connecting portion 2511, and along the glide direction of sliding block, first connecting portion is set to the Between one valve portion and the second chamber, first connecting portion and first end are substantially oppositely arranged, further, along the sliding side of sliding block To 2511 opposite first end of first connecting portion is adjacent to the second chamber, and first end is with respect to first connecting portion far from the second chamber.Tool Body, at most part first connecting portion contacts the second chamber 220, the other parts and third valve portion and the 4th valve of first connecting portion Portion's contact.It is recognised that the shape of size and the second chamber that first connecting portion is contacted with the second chamber is related.In this implementation Example, the second chamber substantially hemispherical or semielliptical shape, first connecting portion and the second chamber are tangent, and the two is point contact face；Other Embodiment, the second chamber may be class cuboid, and first connecting portion and the second chamber are face contact, and part first connects in other words Portion is a part of the second cavity wall, and similarly, the second chamber is also possible to other easily molded regular shapes.It is recognised that first Interconnecting piece is used to define the other parts of the first valve portion and sliding block and virtual structure, and the left side of first connecting portion is sliding block Other parts, the right side of first connecting portion are the first valve portion.In technical solution of the present invention, first connecting portion to first end Distance definition be length X of first valve portion along the first direction of the first wall, length of first valve portion along the second direction of the first wall Spend Y1.First valve portion is greater than third valve port 233 along the length of the first direction of the first wall along the length of the first direction of the first wall D3 is spent, the first valve portion is greater than third valve port 233 along the length of the second direction of the first wall along the length of the second direction of the first wall Degree, when the first valve portion is located above third valve port in other words, the first valve portion can cover third valve port, thus the first valve portion energy Enough end the connection of third valve port and the first valve chamber and the second valve chamber.

Similarly, the second valve portion following side is substantially rectangular, and the second valve portion includes the second end 2521, defines second and connects Socket part 2522, specifically, along the glide direction of sliding block, second connecting portion is set between the second valve portion and the second chamber, and second connects Socket part and the second end are substantially oppositely arranged, and further, second connecting portion opposed second ends are close to the second chamber, the second end Far from the second chamber, at most part second connecting portion contacts opposite second connecting portion with the second chamber 220, second connecting portion it is other Part is contacted with third valve portion and the 4th valve portion.Similarly, the size and second that first connecting portion is contacted with the second chamber The shape of chamber is related, is not described in detail.It is recognised that second connecting portion is used to define other portions of the second valve portion and sliding block Divide and virtual structure, the right side of second connecting portion is the other parts of sliding block, and the left side of second connecting portion is the second valve portion. In the technical solution of invention, the distance definition of second connecting portion to the second end is first direction of second valve portion along the first wall Length Z, second connecting portion along the second direction of the first wall length be Y2.First direction of second valve portion along first wall Length is greater than length D1 of first valve port along the first direction of the first wall, length of second valve portion along the second direction of the first wall The first valve port is all larger than along the length of the first direction of the first wall, when the second valve portion is located above the first valve port in other words, second Valve portion can close the first valve port, and the second valve portion can end the communicating passage of the first valve port and other parts in other words.First Minimum range between valve port and the second valve port is defined as the first partition along the length of the first direction of the first wall, third valve port Minimum range between the second valve port is defined as the second partition along the length of the first direction of the first wall.It is recognised that first Valve portion can also be equal to the second valve portion along the length of the first direction of the first wall, accordingly along the length of the first direction of the first wall Ground, along the first direction of the first wall, the spacing of the second valve port and third valve port is greater than or equal to the first valve port and the second valve port Spacing.In technical solution of the present invention, D1, D 2 and D 3 can be identical or different, and Y1, Y2 can be identical or different, wherein D2 is length of second valve port along the second direction of the first wall.In the present embodiment, the second end and first end are plane, Other embodiments the second end and first end may be cambered surface.

In technical solution of the present invention, the second chamber 220 is generally shaped like half of elliposoidal, and the second chamber is on the downside of sliding block Portion's opening is set as the 4th opening portion 2201, and the 4th opening portion 2201 is generally oval, when sliding block is in conjunction with main valve, the The transverse axis of four opening portions is substantially overlapped with main valve upper lateral part transverse axis, the lateral length of the 4th opening portion 2201 Greater than the maximum distance between the first valve port and the second valve port, 2201 fore-and-aft distance of the 4th opening portion is greater than the first valve port and the The fore-and-aft distance of two valve ports, when the second chamber is located above the first valve port and the second valve port in other words, the first valve port and the second valve port It can be connected to completely with the second chamber.It is recognised that the second chamber is also possible to rectangular shape, correspondingly, the 4th opening portion It is substantially rectangular in shape or square.

Fig. 1 and Fig. 2, Fig. 9 and Figure 10 are please referred to, pilot valve 1 includes pilot valve valve body 11 and pilot valve seat 12, and pilot valve seat is set It is placed in pilot valve valve body, specifically, pilot valve seat is fixedly connected with pilot valve valve interior wall.Pilot valve 1 has pilot valve chamber, pilot valve chamber Wall include pilot valve valve body inner wall.Pilot valve valve body includes four interfaces, wherein is wherein set to pilot valve valve there are three interface Body sidewall, an interface are set to pilot valve valve body end wall, and three interfaces for being set to pilot valve body wall arrange from left to right. Pilot valve seat includes three through-holes, which runs through pilot valve seat, and sets in the upper lateral part of pilot valve seat and following side It is equipped with opening.Pilot valve 1 further includes the first capillary 111, the second capillary 112, third capillary 113 and the 4th capillary 114, wherein one end of the first capillary 111 with the leftmost side orifice of pilot valve body wall and with the corresponding portion of pilot valve chamber Position connection, the other end of the first capillary connect with main valve body left end cap interface and are connected to left chamber, the second capillary 112 One end is connected to the intermediary interface of pilot valve body wall and is connected to the corresponding position of pilot valve chamber, the second capillary other end with The connection of second communicating pipe 202, one end of third capillary 113 and the right side orifice of pilot valve body wall and with pilot valve chamber Connection, the right end cap interface connection of third capillary and main valve body and be connected to right chamber, one end of the 4th capillary 114 with lead Valve body end wall orifice and be connected to pilot valve chamber, the 4th capillary is connected to the 4th communicating pipe 204.Pilot valve 1 further includes set Pipe 13 and electromagnetic coil 14, casing 13 are connect with 11 right end of pilot valve valve body, and electromagnetic valve coil 14 is set to 13 outside of casing；It leads Valve 1 further includes spring 15, core iron 16 and valve bowl 17, and core iron 16 and valve bowl 17 are linked together, and valve bowl 17, which is equipped with connection, to be connected The cavity of admittance valve base through-hole, spring 15 are contacted with core iron 16, and valve bowl 17 is opposite along pilot valve seat 12 under the drive of core iron Sliding.

When electromagnetic coil is powered, core iron 16 overcomes the active force of returning spring that sliding bowl 17 is driven to move to right, the second capillary 112 and third capillary 113 be connected to through the cavity between valve bowl 17 and pilot valve seat, the 4th capillary 114 and the first capillary 111 connections, so that the left chamber 221 of main valve 2 is higher-pressure region, right chamber 222 is low-pressure area, is formed between the left chamber and right chamber of main valve 2 Pressure difference, under pressure difference effect, piston 24 shifts to right side with movable slider 25, and sliding block is located at the rightmost side and is defined as sliding block First operating position, when definition sliding block is located at the first operating position, fluid switching device is in the first working condition.Sliding block position In the first operating position, wherein the first valve port 231 is connected to main valve chamber, and the first valve port 231 passes through in main valve chamber in other words Chamber 223 is connected to the 4th communicating pipe 204, and the second valve port 232 and third valve port 233 are located at the lower section of the second chamber 220, the second valve Mouth 232 and third valve port 233 are connected to the second chamber respectively, and in other words, the second valve port is connected to third valve port.

When the electromagnetic coil no power of pilot valve 1, under spring pressure, core iron 16 drives sliding bowl 17 to move to left, the first capillary And second capillary be connected to through the cavity between valve bowl 17 and pilot valve seat, third capillary and the 4th capillary connection, thus The left chamber 221 of main valve 2 is low-pressure area, and right chamber 222 is higher-pressure region, forms pressure difference between the left and right chamber of main valve 2, similarly, Under pressure difference effect, piston 24 pushes sliding block 25 to left side, and sliding block is located at the second operating position that the leftmost side is defined as sliding block, When definition sliding block is located at the second operating position, fluid switching device is in the second working condition.Sliding block is located at the second operating position When, the second chamber 220 is located at 232 top of the first valve port 231 and the second valve port, the first valve port and the second valve port and the second chamber 220 Connection, the first communicating pipe are connected to the second communicating pipe by the second chamber 220；First valve portion is located at the left side of third valve port 233, Third valve port is connected to main valve chamber, and the 4th communicating pipe 204 was connected to the lumen of main valve chamber, and third valve port is through main valve chamber in other words It is connected to the 4th communicating pipe 204.

Referring specifically to Figure 12, when sliding block is located at the first operating position, the first valve portion 251 is located at the right side of third valve port 233 Side, the first valve portion are not interfered with third valve port, and the second valve portion 252 is between the first valve port 231 and the second valve port 232, and second Valve portion is not interfered with the first valve port and the second valve port.Specifically, first connecting portion 2511 is located at 233 right side of third valve port, third Valve port is connected to the second chamber, and the second end 2521 is located at 231 right side of the first valve port, and the second valve portion is not interfered with the first valve port, the One valve port is connected to lumen 223 completely, and the 4th communicating pipe was connected to lumen, the first connection being connected in other words with the first valve port Pipe is connected to by lumen with the 4th communicating pipe；Second connecting portion is located at the left side of the second valve port, second connecting portion and the second valve Mouth is not interfered, and the second valve port is connected to the second chamber, and in other words, the second valve port is connected to third valve port.Sliding block is located at the second work When position, the first valve portion 251 between the second valve port 232 and third valve port 233, the first valve portion not with the second valve port and The interference of three valve ports, the second chamber are located above the first valve port and the second valve port.Specifically, first end 2512 is located at third valve port 233 left side, third valve port 233 are connected to lumen completely, and the third connecting pipe being connected in other words with third valve port is completely with The connection of four communicating pipes；First connecting portion 2511 is located at the right side of the second valve port 232, and second connecting portion 2522 is located at the first valve port 231 left sides, the first valve port and the second valve port be connected to the second chamber completely respectively, and the first valve port passes through the second chamber and the in other words The connection of two valve ports, or say, the first communicating pipe being connected to the first valve port and the second communicating pipe being connected to the second valve port connect It is logical.Connection, valve port between present embodiment, valve port and be to be connected between import completely, in this way, in fluid switching device The refrigerant circulation of circulation is more smooth.

Figure 13 is please referred to, when sliding block is located at the first operating position, the second valve portion 252 is located at the first valve port 231 and the second valve Between mouth 232, the second end is located above the first valve port and/or second connecting portion is located above the second valve port and/or first connects Socket part is located at the top of third valve port, and the first valve port is connected to lumen, and the second valve port is connected to the second chamber, and third valve port is in Chamber connection, the second valve port is connected to third valve port, and due to the isolation of sliding block, the second valve port, third valve port are not connected to lumen； When sliding block is located at the second operating position, the second end is located at the left side of the first valve port, and second connecting portion is located at the upper of the first valve port Side and/or first connecting portion are located at the top of the second valve port and/or first end is located at the top of third valve port, third valve port It is connected to lumen, the second valve port is connected to the second chamber, and the first valve port is connected to the second chamber, in other words the first valve port and the second valve Mouth connection, due to the isolation of sliding block, the first valve port, the second valve port are not connected to lumen.In this way, the size and sliding block of sliding block Cooperation between valve port require it is relatively low, it is easy to process.

Figure 14, the transverse axis of the first wall of center deviation of the second valve port 232 are please referred to, the second valve port is located at sliding block Lower section, the second chamber are greater than the maximum distance between the first valve port and the second valve port along the length of the second direction of the first wall, or When saying that sliding block is in the first, second operating position, the second valve port is located at below sliding block, at least partly the second valve port and the second chamber Connection.It is recognised that the center at the center of the first valve port, third valve port can also deviate main valve transverse axis, the first valve Mouthful center, third valve port center without departing from sliding block coverage area, the longitudinal pitch of the first valve port and the second valve port is less than the Two chamber longitudinal lengths, when being located at the second operating position to meet sliding block, the first valve port and the second valve port are connected to through the second chamber.It can To know, the second valve port deviates the transverse axis of the first wall, and the second valve port of part is connected to the second chamber, adjustable deviation valve Mouth deviates the distance of the transverse axis of the first wall or adjusts the bore of valve port, so that the valve port deviateed connects completely with the second chamber It is logical.In present embodiment, the communicating pipe longitudinal gap setting being connected to valve port, being conducive to fluid switching device be can be applied to Different installation situations.

Figure 15 and Figure 16 is please referred to, when heat management system does not work, the electromagnetic coil no power of pilot valve 1, sliding block is shaken When dynamic or other factors influence, sliding block may stay in the first operating position, the second operating position or the first operating position and the Any position between two operating positions, since the second valve portion is along the length of the first direction of the first wall and along the of the first wall The length in two directions is all larger than the first valve port along the first direction of the first wall and the bore of second direction, and the second valve portion covers portion When dividing the first valve port, the second valve portion of part is located at the top of the first partition or the second valve portion of part is located on the left of the first valve port, Second valve port cannot pass through the first valve port and inlet communication；Similarly, since the first valve portion is along the length of the first direction of the first wall The length of degree and the second direction along the first wall is all larger than third valve port along the first direction of the first wall and the mouth of second direction Diameter, when the first valve portion can cover part third valve port, the first valve portion of part is located at top or the part third valve of the second partition Portion is located on the right side of third valve port, and the second valve port cannot pass through third valve port and inlet communication；Therefore, sliding block can end second Communicating passage between valve port and import, in this way, the second chamber is not connected to lumen when heat management system starts, in other words, the A connecting pipe is not connected to the 4th communicating pipe, and pressure difference can be established between left chamber and right chamber, pushes sliding block mobile, fluid switching Device can work normally.More further, along the glide direction of sliding block, sliding block only covers the first valve port of part, the first valve port with Lumen connection, specifically, the second valve portion of part are located at the top of the first valve port of part, and the second valve portion of another part is located at first The top of partition, the second valve portion end the communicating passage of the second chamber and the first valve port, and the second chamber is not connected to the first valve port, or Person says that the second valve port is not connected to the first valve port；Meanwhile sliding block only covers part third valve port, third valve port and lumen connect Logical, specifically, the first valve portion of part is located at the top of part third valve port, and the second valve portion of another part is located at the second partition Top, the first valve portion end the communicating passage of the second chamber and third valve port；Alternatively, third valve port is not connected to lumen, part One valve portion is located at the right side of third valve port, and sliding block ends the communicating passage of lumen and third valve port, at this point, the second valve port and the Three valve ports are connected to or are not connected to；In other embodiments, sliding block is between the first operating position and the second operating position When, sliding block only covers part third valve port, and third valve port is connected to lumen, and specifically, the first valve portion of part is located at the second partition Top, the second chamber is not connected to third valve port；Meanwhile the second valve portion of part is located at the left side of the first valve port, the first valve port with Lumen is not connected to.In more detail, when sliding block is between the first operating position and the second operating position, along the of the first wall One direction, part the second end are located at the top of the first valve port, and second connecting portion is located at the top of the first partition, the second valve portion End the communicating passage between the second chamber and the first valve port；Meanwhile at least partly first connecting portion is located at the upper of third valve port Side, first end are located at the right side of third valve port, and the first valve portion ends the communicating passage of third valve port and lumen；In other realities Mode is applied, first connecting portion and first end are located at the opposite sides of third valve port, and the first valve portion covers third valve port, third Valve port is not connected to lumen；Alternatively, portion first end is located at the top of third valve port, first connecting portion is located at the second partition Top, the first valve portion end the second chamber and third valve port communicating passage.Alternatively, sliding block is located at the first operating position and When between two operating positions, along valve block glide direction, at least partly first end top that is located at third valve port, the first connection Top of the portion between third valve port and the second valve port, third valve port are connected to lumen, and third valve port does not connect with the second chamber It is logical；At least partly the second connecting portion top that is located at the first valve port, the second end are located at the left side of the first valve port, the first valve port It is not connected to the second chamber, the first valve port is connected to lumen；Or the second end and second connecting portion are located at the opposite of third valve port Two sides, the first valve port are not connected to lumen.

Please refer to Figure 18, a kind of heat management system, including compressor 5, positioned at compressor inlet gas-liquid separator 6, Indoor heat exchanger 9, indoor evaporator 3, outdoor heat exchanger 4, fluid switching device and the throttling group being connect with exhaust outlet of compressor Part；Fluid switching device includes the first communicating pipe 201, the second communicating pipe 202, third connecting pipe 203 and the 4th communicating pipe 204, 4th communicating pipe 204 and another orifice of indoor heat exchanger 9, were connected to the first communicating pipe 201 with outdoor heat exchanger 4, and second connects Siphunculus 202 is connected to through gas-liquid separator 6 with compressor air suction mouth, and outdoor heat exchanger 4 is through check valve 7 in parallel and the first expansion Valve 81 is connected to after being connected to third connecting pipe 203, and third connecting pipe 203 passes through the second expansion valve 82 and indoor evaporator simultaneously Connection, the second expansion valve 82 and 3 one orifice of indoor evaporator, another interface of indoor evaporator 3 and gas-liquid separator 6 into Mouth connection；Pipeline connection between third connecting pipe 203 and the first expansion valve 81 and the second expansion valve 82 passes through control valve Connection.Wherein, check valve 7 is connected when fluid is from outdoor heat exchanger to third connecting 203 direction of pipe, and from third connecting pipe 203 to outdoor heat exchanger direction Shi Weiguan；In addition expansion valve can also use the expansion valve with conducting function, in addition it can Function is directly connected in band, can cancel check valve in this way, and such as the first expansion valve 81 is with unidirectional directly conducting function, and fluid is from room It is connected when external heat exchanger is to third connecting 203 direction of pipe, from third connecting pipe 203 to the first expansion valve of outdoor heat exchanger direction For throttle.

When needing to freeze in summer room, the refrigerant circulation circuit of heat management system is switched using fluid switching device It for refrigeration mode, was connected to the first communicating pipe 201 the 4th communicating pipe 204, the second communicating pipe 202 and third connecting pipe 203 do not connect Logical, indoor heat exchanger 2 is connected to outdoor heat exchanger 4.In cooling mode, 902 aperture of air door of indoor heat exchanger 9 is zero, is allowed Air duct bypass, wind is without indoor heat exchanger 9.When the gaseous coolant of high temperature and pressure comes out from compressor, by indoor heat exchanger When 9, due to passing through at this time without wind, so the refrigerant by indoor heat exchanger will not generate heat exchange with air substantially；This Sample, fourth communicating pipe 204 of the refrigerant Jing Guo fluid switching device flow into the first communicating pipe 201 being connected to outdoor heat exchanger 4, Then outdoor heat exchanger is flowed into, heat exchange is carried out after heat is discharged to air in refrigerant with air herein and passes through check valve 7 Throttle by the second expansion valve 82, become the refrigerant of low-temp low-pressure and enter the room evaporator 3, herein with it is indoor Air carries out heat exchange, and extra heat, achievees the purpose that refrigeration in absorption chamber.Refrigerant becomes after indoor evaporator 3 The gaseous fluid of low-temp low-pressure or the fluid of low-temp low-pressure gas-liquid two-phase return to gas-liquid separator 6, the gaseous coolant of low-temp low-pressure (saturation or superheat state) returns to compressor 5, is done work by compressor 5, then the gaseous coolant of low-temp low-pressure is become high temperature height The gaseous coolant of pressure forms a refrigeration cycle.First expansion valve or the second expansion valve can select heating power expansion valve or electronics Expansion valve or throttle pipe；In addition, the present embodiment is the restriction effect for guaranteeing refrigerant fluid, orifice union is preferentially selected can be two-way Circulate the electric expansion valve to throttle.

When needing heat in winter room, system is switched to heating mode, at this moment the 4th communicating pipe 204 and third connecting Pipe 203 is connected to, and is connected to the second communicating pipe 202 the first communicating pipe 201.At this moment, air door 902 can open to the maximum, and avoid by wind It is logical and without indoor heat exchanger 9, at this moment the type of flow of refrigerant circulation circuit is as follows: the gaseous coolant of high temperature and pressure is from pressure Contracting machine 5 comes out, by indoor heat exchanger 9, the gaseous coolant of the high temperature and pressure of the air that passes through here and indoor heat exchanger 9 into Row heat exchange flows to interior after atmosphere temperature rising to heat indoor temperature；After refrigerant absorbs the cooling capacity in air, by fluid The third connecting pipe 203 of switching device flows into the pipeline between the first expansion valve 81 and the second expansion valve 82, can use interior Whether the second expansion valve 82 control refrigerant before heat exchanger 3 enters evaporator；Refrigerant enters the first expansion valve 81, so far, refrigerant Become the fluid of low-temp low-pressure, reach outdoor heat exchanger 4, in outdoor heat exchanger 4, starts outdoor fan, make refrigerant in outdoor Heat exchanger 4 and external air carry out heat exchange；The refrigerant of outdoor heat exchanger enters fluid after absorbing the heat in outside air First communicating pipe 201 of switching device, then by the second communicating pipe 202 returning to gas-liquid separator 6, the gaseous state of low-temp low-pressure Refrigerant (saturation or superheat state) returns to compressor, is done work by compressor 5, then the gaseous coolant of low-temp low-pressure is become high The gaseous coolant of warm high pressure forms a heat pump cycle；By when gas-liquid separator if there is liquid refrigerants does not steam completely Hair, liquid refrigerants will be stored in gas-liquid separator, and the efficiency of heat pump system is influenced to avoid compressor liquid hammer or supercooling. If the heating capacity of indoor heat exchanger is not able to satisfy indoor comfort level requirement, heater 901 electric add can be carried out simultaneously Heat is supplemented, to meet indoor comfort level requirement.In addition, if opening the second expansion valve 82 before indoor heat exchanger, portion Refrigerant is divided to enter the room evaporator through the second expansion valve 82, absorption partial heat forms dehumidifying effect to condensation moisture, It keeps air dry and comfortable, dehumidification function may be implemented in this way.Fluid switching device is introduced in heat management system, is not only realized The refrigeration and heat-production functions of heat management system advantageously reduce the number of applications of shut-off valve in heat management system, and reduce cut-off The layout difficulty of valve simplifies the control process of heat management system.Heat management system is vibrated if vehicular hot pipe manages system When, if heat management system does not work at this time, the electromagnetic coil no power of pilot valve 1, sliding block is vibrated or other factors influence When, sliding block may stay in any position between the first operating position and the second operating position, due to the transverse direction of the second valve portion Length and longitudinal length are all larger than the aperture of the first valve port, therefore, when the second end portion is located above the first valve port, second Connecting portion is in the right side of the first valve port, similarly, since the lateral length and longitudinal length of the first valve portion are all larger than third valve The aperture of mouth, therefore, when first end is located above third valve port, first connecting portion is located at the left side of third valve port, this Sample, when heat management system starts, the second chamber is not connected to lumen, and in other words, the first communicating pipe was not connected to the 4th communicating pipe, Left chamber and right chamber can establish pressure difference, push sliding block mobile, fluid switching device can work normally.

Figure 17, a kind of heat management system are please referred to, heat management system includes compressor 5, indoor heat exchanger 3, outdoor heat exchange Device 4 and restricting element 82, heat management system further include fluid switching device, and fluid switching device includes import 203, the first valve Mouth the 201, second valve port 202, third valve port 203, the outlet of import and compressor, the first valve port and outdoor heat exchanger First port connection, the second valve port are directly or indirectly connected to compressor inlet, the first end of third valve port and indoor heat exchanger The second port of mouth connection, indoor heat exchanger is connected to by restricting element with the second port of outdoor heat exchanger；

Indoor heat exchanger 3 can give indoor carry out heat supply and cooling supply according to indoor duty requirements；Heat management system refrigeration When, fluid switching device opens the communication paths of the import and the first valve port, and fluid switching device opens second valve port The communication paths being connected to third valve port；

When heat management system heats, the third valve port and inlet communication of fluid switching device, the first valve port and the second valve port Connection.Specifically, when fluid switching device is in the first working condition, import is connected to the first valve port, third valve port and second Valve port connection, outdoor heat exchanger discharge heat to outdoor environment as condenser, and indoor heat exchanger is mentioned as evaporator to interior Semen donors；When fluid switching device is in the second working condition, import is connected to third valve port, the first valve port and the second valve port Connection, indoor heat exchanger is as condenser to indoor offer cooling capacity, and outdoor heat exchanger is as evaporator to outdoor released cold quantity；

When heat management system does not work, fluid switching device is in runaway condition, sliding block due to be vibrated or other because Element influences, and sliding block is likely located between the first operating position and the second operating position, and the second valve port is not connected to import, works as stream When body switching device restarts, pressure difference is established at piston both ends, and sliding block is mobile.

Please refer to Fig. 1-Fig. 8, wherein the horizontal spacing of the first valve port and the second valve port is less than the second valve port and third valve The horizontal spacing of mouth, the lateral length of the first valve portion are greater than the lateral length of the second valve portion.In the first work of fluid switching device Make state, sliding block is located at the first operating position, wherein the first valve port 231 is connected to lumen, and the first valve port 231 passes through in other words Lumen 223 is connected to the 4th communicating pipe 204, and the second valve port 232 is connected to the second chamber 220；Third valve port 233 is located at the first valve The lower section of portion 251, third valve port 233 are closed by the first valve portion 251, and third valve port 233 is not connected to the second chamber 220, also with first Chamber or lumen are not connected to.In the second working condition of fluid switching device, sliding block is located at the second operating position, the second chamber 220 Above the first valve port 231 and the second valve port 232, the first valve port and the second valve port are connected to the second chamber 220, the first connection Pipe is connected to the second communicating pipe by the second chamber 220；First valve portion is located at the left side of third valve port 233, third valve port and main valve Chamber connection, was connected to, third valve port is through main valve chamber and the 4th communicating pipe 204 in other words the 4th communicating pipe 204 with the lumen of main valve chamber Connection.Specifically, the lateral length of the first valve portion 251 and the longitudinal length of the first valve portion 251 are all larger than third valve port 233 Bore, when sliding block 25 is located at the first operating position, first connecting portion 2511 is located at the top of the second valve port or between second The top of wall, first end 2512 are located at the top of third valve port or positioned at the tops of the second partition, and the first valve portion 251 is cut The only communicating passage of third valve port 233 and lumen, the first valve portion 251 end third valve port and the second chamber communicating passage；It is same with this When, the second end 2521 is located above the first valve port or positioned at the top of the first partition, and second connecting portion is located at the second valve port Top or positioned at the top of the first partition, the second valve portion opens the communicating passage of the first valve port and lumen, the cut-off of the second valve portion The communicating passage of first valve port and the second valve port.When sliding block 25 is located at the second operating position, first end 2512 is located at third valve Top or first end between mouth 233 and the second valve port 232 are located at the top of third valve port, at least partly third valve port It is connected to lumen, first connecting portion 2512 is located at the top of the second valve port 232 or positioned at the top of the second partition, the first valve Portion opens the communicating passage of third valve port and lumen, and the first valve portion ends the communicating passage of third valve port and the second chamber；First connects Socket part 2512 is located at 231 top of the first valve port or first connecting portion is upper between the first valve port and the second valve port 232 Side, the second end are located at the left side of the first valve port, and the second valve portion opens the communicating passage between the first valve port and the second valve port, Second valve portion ends the communicating passage of the first valve port and lumen, in present embodiment, realize connection between different valve ports or Cut-off is advantageously implemented the heating of heat management system, freezes and remove when the fluid switching device is applied to heat management system Mist dehumidifying.

When heat management system does not work, the electromagnetic coil no power of pilot valve 1, sliding block is vibrated or other factors influence When, sliding block may stay in any position between the first operating position and the second operating position, due to the transverse direction of the second valve portion Length and longitudinal length are all larger than the aperture of the first valve port, and the lateral length and longitudinal length of the first valve portion are greater than third valve port Bore, therefore, along the glide direction of sliding block, when the second end is located above the first valve port, second connecting portion is located at first The top of partition or positioned at the top of the second valve port, the second valve portion ends the communicating passage of the first valve port and the second chamber；Together When, at least partly the first valve portion is located at the top of the second partition, and the first valve portion is ended to be connected between the second chamber and third valve port and be led to Road；Or at least partly the first valve portion is located at the right side of third valve port, the first valve portion ends the connection of third valve port and lumen Channel, the second valve port are not connected to the second chamber with lumen.In this way, the second chamber is not connected to lumen when heat management system starts, In other words, the first communicating pipe was not connected to the 4th communicating pipe, and left chamber and right chamber can establish pressure difference, pushed sliding block mobile, fluid Switching device can work normally.

Referring to Fig. 8, a kind of heat management system, including compressor 5, positioned at compressor inlet gas-liquid separator 6, Indoor heat exchanger 9, indoor evaporator 3, outdoor heat exchanger 4, fluid switching device and the throttling group being connect with exhaust outlet of compressor Part；Fluid switching device includes the first communicating pipe 201, the second communicating pipe 202, third connecting pipe 203 and the 4th communicating pipe 204, 4th communicating pipe 204 and another orifice of indoor heat exchanger 9, were connected to the first communicating pipe 201 with outdoor heat exchanger 4, and second connects Siphunculus 202 is connected to through gas-liquid separator 6 with compressor air suction mouth, and outdoor heat exchanger 4 is through check valve 7 in parallel and the first expansion Valve 81 is connected to after being connected to third connecting pipe 203, and third connecting pipe 203 passes through the second expansion valve 82 and indoor evaporator simultaneously Connection, the second expansion valve 82 and 3 one orifice of indoor evaporator, another interface of indoor evaporator 3 and gas-liquid separator 6 into Mouth connection；Pipeline connection between third connecting pipe 203 and the first expansion valve 81 and the second expansion valve 82 passes through control valve and connects It is logical.Wherein, check valve 7 is connected when fluid is from outdoor heat exchanger to third connecting 203 direction of pipe, and from third connecting pipe 203 to outdoor heat exchanger direction Shi Weiguan；In addition expansion valve can also use the expansion valve with conducting function, in addition it can Function is directly connected in band, can cancel check valve in this way, and such as the first expansion valve 81 is with unidirectional directly conducting function, and fluid is from room It is connected when external heat exchanger is to third connecting 203 direction of pipe, from third connecting pipe 203 to the first expansion valve of outdoor heat exchanger direction For throttle.

It should be understood that above embodiments are merely to illustrate the present invention and not limit technology described in the invention Scheme, although the present invention has been described in detail referring to the above embodiments for this specification, this field it is general Lead to it will be appreciated by the skilled person that person of ordinary skill in the field still can modify to the present invention or equally replace It changes, and all do not depart from the technical solution and its improvement of the spirit and scope of the present invention, should all cover and want in right of the invention It asks in range.

Claims

1. a kind of fluid switching device, including main valve body, main valve and sliding block, the main valve is interior with the main valve body Wall is relatively fixed, and the main valve includes the first wall, and first wall is provided with the first valve port, the second valve port and third valve Mouthful, along the first direction of first wall, second valve port is between first valve port and the third valve port；It is described Main valve body includes import, the import towards first wall, the sliding block can the relatively described main valve sliding and have First operating position and the second operating position；First wall further includes the first partition and the second partition, along first wall First direction, first partition are set between first valve port and second valve port, and second partition is set to Between second valve port and the third valve port；

The sliding block includes the first valve portion and the second valve portion, and first valve portion is big along the length of the first direction of first wall In the third valve port along the bore of the first direction of first wall, first direction of second valve portion along first wall Length be greater than first valve port along the first direction of first wall bore；First valve portion is along first wall The length of second direction is greater than the third valve port along the bore of the second direction of first wall, and second valve portion is described in The length of the second direction of first wall is greater than first valve port along the bore of the second direction of first wall.

2. fluid switching device according to claim 1, which is characterized in that the fluid switching device includes main valve chamber, The main valve chamber is located in the main valve body, and the wall of the main valve chamber includes the inner wall and the main valve of the main valve body Wall, the main valve chamber includes the first chamber and the second chamber, along the normal direction of first wall, the sliding block and first wall Between the chamber that is formed be defined as the second chamber, the remainder of the main valve chamber is defined as the first chamber, first chamber include left chamber, Lumen and right chamber, along the first direction of first wall, the lumen is set between the left chamber and the right chamber, it is described in Chamber and the inlet communication, at least partly described second valve port are located at below second chamber, second chamber at least with it is described The connection of second valve port；Along the first direction of first wall, first valve portion and second valve portion are set to described second The opposite sides of chamber；When the sliding block is between first operating position and second operating position, along described first The first direction of wall, part second valve portion are located at the top of part first valve port, the second valve portion described in another part Positioned at the top of first partition；Part first valve portion is located at the top of the part third valve port, another part institute State the top that the first valve portion is located at second partition；Or first valve portion is located at the top of the third valve port；Or Part first valve portion is located at the top of the part third valve port, and the first valve portion described in another part is located at the third valve The right side of mouth；

Or the sliding block between first operating position and second operating position when, along the of first wall One direction, part first valve portion are located at the top of the part third valve port, and the first valve portion described in another part is located at institute State the top between third valve port and second valve port；Second valve portion is located at the top or portion of first valve port Point second valve portion is located at the top of first valve port, and the second valve portion described in another part is located at a left side for first valve port Side.

3. fluid switching device according to claim 1 or 2, which is characterized in that along the normal direction of first wall, institute It states the chamber formed between sliding block and first wall and is defined as the second chamber；First valve portion includes first end, and described second Valve portion includes the second end, defines first connecting portion and second connecting portion, along the glide direction of the sliding block, first connection Portion is set between first valve portion and second chamber, the relatively described first end of the first connecting portion it is neighbouring with it is described Second chamber；The second connecting portion is set between second valve portion and second chamber, and the second connecting portion is with respect to institute The second end is stated adjacent to second chamber；

When the sliding block is between first operating position and second operating position, along the first party of first wall To the part the second end is located at the top of first valve port, and the second connecting portion is located at the upper of first partition The square or described second connecting portion is located at the top of second valve port；The part first end is located at the third valve port Top, the first connecting portion are located at the top of second partition；Or the part first connecting portion is located at the third The top of valve port, the first end are located at the right side of the third valve port；Or the first connecting portion and the first end Portion is located at the opposite sides of the third valve port；

Or the sliding block between first operating position and second operating position when, along the valve block sliding side To the part first end is located at the top of the third valve port, and the first connecting portion is located at the upper of second partition Side；The part second connecting portion is located at the top of first valve port, and the second end is located at a left side for first valve port Side；Or the second end and the second connecting portion are located at the opposite sides of first valve port.

4. fluid switching device according to claim 1 to 3, which is characterized in that along the normal side of first wall To the chamber formed between the sliding block and first wall is defined as the second chamber, and at least partly described second valve port is located at described The lower section of second chamber；The sliding block includes the first valve portion and the second valve portion, along the glide direction of the sliding block, first valve portion The second chamber opposite end is set to second valve portion；When the first operating position of the sliding block, the fluid is defined Switching device is in the first working condition, when the second operating position of the sliding block, defines the fluid switching device and is in the Two working conditions,

The sliding block is located at the first operating position, and second valve portion at most covers part first valve port, along described first The first direction of wall, at least partly described second valve portion are located at the top of first partition, at least partly described third valve port Positioned at the lower section of second chamber；

The sliding block is located at the second operating position, and along the first direction of first wall, at least partly described second valve portion is located at The left side of first valve port, at least partly described first valve port are located at the lower section of second chamber；Along the of first wall One direction, at least partly described first valve portion are located at the top of second partition, and first valve portion at most covers part institute State third valve port.

5. fluid switching device according to claim 4, which is characterized in that first valve portion includes first end, institute Stating the second valve portion includes the second end, defines first connecting portion and second connecting portion；Along the glide direction of the sliding block, described One interconnecting piece is set between first valve portion and second chamber, and the relatively described first end of the first connecting portion is neighbouring With second chamber；The second connecting portion is set between second valve portion and second chamber, the second connecting portion The relatively described the second end is adjacent to second chamber；

First operating position of the corresponding sliding block defines the first working condition of the fluid switching device, the corresponding cunning Second operating position of block defines the second working condition of the fluid switching device；The sliding block is located at the first operating position When, along the first direction of first wall, the second end is located above first valve port or is located at first partition Top；The first connecting portion, first end are located at the third valve port opposite sides respectively；

When the sliding block is located at the second operating position, along the first direction of first wall, the second connecting portion is located at described Above first valve port or the second connecting portion is located at the left side of first valve port, and the first connecting portion is positioned at described the The top of two partitions or the first connecting portion are located at the top of second valve port, and the first end is located at described second The top of partition or the first end are located at the top of the third valve port, and the first connecting portion is located at second partition Top or the first connecting portion be located at the top of second valve port.

6. fluid switching device according to claim 5, which is characterized in that when the sliding block is located at the first operating position, Along the first direction of first wall, the second end is located at the top of first partition, and the second connecting portion is located at The top of first partition, the first end and the first connecting portion are located at the top of first wall；

When the sliding block is located at the second operating position, along the first direction of first wall, the first connecting portion is located at described The top of second partition, the second end are located at the top of second partition, and the second connecting portion is located at described first The left side of valve port.

7. -6 any fluid switching device according to claim 1, which is characterized in that the main valve further includes the first connection Pipe, the second communicating pipe, third connecting pipe and the 4th communicating pipe, the main valve include the first valve opening, the second valve opening and third Valve opening, first valve opening are connected to first valve port, first communicating pipe, and second valve opening is connected to second valve Mouth, second communicating pipe, the third valve opening are connected to the third valve port, the third connecting pipe；

The main valve further includes first piston and second piston, and the first piston and the second piston fix connection relatively, The sliding block can be driven to slide when the first piston and second piston activity；The first piston and second piston are by described One chamber is divided into left chamber, right chamber and lumen, and the lumen is between first piston and second piston, and the left chamber is with respect to right chamber neighbour The nearly first piston, the relatively described left chamber of the right chamber at least connect with the described 4th adjacent to the second piston, the lumen Siphunculus connection.

8. fluid switching device according to claim 7, which is characterized in that the fluid switching further includes pilot valve, first Capillary, the second capillary, third capillary and the 4th capillary, first capillary, the second capillary, third capillary It being connected to respectively with the different location of pilot valve with the 4th capillary, first capillary is connected to the left chamber, and described second mao Tubule is connected to second communicating pipe, and the third capillary is connected to the right chamber, the 4th capillary and described the The connection of four communicating pipes；

The pilot valve includes two operating positions: the first operating position, the second operating position, in the first working position of the pilot valve When setting, first capillary is connected to the 4th capillary, and second capillary is connected to the third capillary；? When the second operating position of the pilot valve, first capillary is connected to second capillary, the third capillary and The 4th capillary connection.

9. fluid switching device according to claim 1, which is characterized in that the fluid switching device includes main valve chamber, The main valve chamber is set to the main valve body, and the wall of the main valve chamber includes the inner wall and the main valve of the main valve body Wall, the main valve chamber includes the first chamber and the second chamber, along the normal direction of first wall, the sliding block and first wall Between the chamber that is formed be defined as the second chamber, second chamber is connected to second valve port, and the remainder of the main valve chamber is fixed Justice is the first chamber；The main valve further includes first piston and second piston, and the first piston and the second piston are relatively solid Fixed connection, when first piston and second piston activity, can drive the sliding block to slide；The first piston and described second First chamber is divided into left chamber, right chamber and lumen by piston, and along the first direction of first wall, it is living that the lumen is located at first Between plug and second piston, the left chamber is with respect to right chamber adjacent to the first piston, and the right chamber is with respect to left chamber adjacent to described the Two pistons, the lumen and the inlet communication；

The main valve includes the first wall, and the import is oppositely arranged with first wall, and first wall is provided with first Valve port, the second valve port and third valve port, the main valve include the first valve opening, the second valve opening and third valve opening, described first Valve opening is connected to first valve port, and second valve opening is connected to second valve port, and the third valve opening is connected to the third valve Mouthful；First wall further includes the first partition and the second partition, along the first direction of first wall, the first partition setting Between first valve port and second valve port, second partition is set to second valve port and the third valve port Between；

The sliding block includes the first valve portion and the second valve portion, along the first direction of first wall, first valve portion and described Second valve portion is set to the second chamber opposite end, and first valve portion is greater than along the length of the first direction of first wall Bore of the third valve port along the first direction of first wall, first direction of second valve portion along first wall Length is greater than first valve port along the bore of the first direction of first wall；First valve portion along first wall The length in two directions is greater than the third valve port along the bore of the second direction of first wall, and second valve portion is along described the The length of the second direction of one wall is greater than first valve port along the bore of the second direction of first wall；

The main valve further includes the first communicating pipe, the second communicating pipe, third connecting pipe and the 4th communicating pipe, first communicating pipe It is connected to, is connected to second valve port second communicating pipe, third connecting pipe is connected to third valve port with first valve port, 4th communicating pipe and the inlet communication；

Fluid switching further includes pilot valve, the first capillary, the second capillary, third capillary and the 4th capillary, described First capillary, the second capillary, third capillary and the 4th capillary are connected to the specific position of pilot valve respectively, and described first Capillary is connected to the left chamber, and second capillary is connected to second communicating pipe, the third capillary with it is described Right chamber connection, the 4th capillary are connected to the 4th communicating pipe；

Corresponding to the first operating position and the second operating position of the sliding block, the fluid switching device includes the first work shape State and the second working condition, the sliding block are located at the first operating position, define the fluid switching device and are in the first work shape State, second valve portion at most cover part first valve port, along the first direction of first wall, at least partly described Two valve portions are located at the top of first partition, and at least partly described third valve port is located at the lower section of second chamber；Described Second working condition of fluid switching device, the sliding block is located at the second operating position, along the first direction of first wall, until Second valve portion described in small part is located at the left side of first valve port, and at least partly described first valve port is located at second chamber Lower section；Along the first direction of first wall, at least partly described first valve portion is located at the top of second partition, and described One valve portion at most covers the part third valve port；

Corresponding to the first operating position and the second operating position of the sliding block, the pilot valve includes two operating positions: first Operating position, the second operating position, at the first operating position of the pilot valve, first capillary and the 4th capillary Pipe connection, second capillary are connected to the third capillary；At the second operating position of the pilot valve, described first Capillary is connected to second capillary, and the third capillary is connected to the 4th capillary；

When the sliding block is between first operating position and second operating position, along the first party of first wall It is located at the top of part first valve port to, part second valve portion, the second valve portion described in another part is located at described the The top of one partition；Part first valve portion is located at the top of the part third valve port, the first valve portion described in another part Positioned at the top of second partition；Or first valve portion is located at the top of the third valve port；Or part described One valve portion is located at the top of the part third valve port, and the first valve portion described in another part is located at the right side of the third valve port；

10. a kind of heat management system, the heat management system includes compressor, indoor heat exchanger, indoor evaporator, outdoor heat exchange Device and orifice union, the heat management system further include fluid switching device, the fluid switching device include sliding block, slide and Import, the first wall of the slide are provided with the first valve port, the second valve port, third valve port, the sliding block include the first valve portion and Second valve portion, first valve portion are greater than the third valve port along first wall along the length of the first direction of first wall First direction bore, second valve portion along the first direction of first wall length be greater than first valve port along institute State the bore of the first direction of the first wall；First valve portion is greater than the third along the length of the second direction of first wall Along the bore of the second direction of first wall, second valve portion is greater than valve port along the length of the second direction of first wall Bore of first valve port along the second direction of first wall；

The import and the indoor heat exchanger outlet, first valve port are connected to the outdoor heat exchanger, and described the Two valve ports are directly or indirectly connected to compressor inlet, the third valve port and the outdoor heat exchanger and the indoor evaporator Connecting pipeline connection, further include restricting element between the third valve port and the indoor evaporator；The sliding block can be slided It moves and there is the first operating position and the second operating position, the first operating position of the corresponding sliding block defines the fluid and cuts First working condition of changing device, the second operating position of the corresponding sliding block, defines the second work of the fluid switching device Make indoor heat exchanger described in state and the indoor evaporator can be according to indoor duty requirements to indoor carry out heat supply and cooling supply；

When the heat management system freezes, the sliding block is in the first operating position, and the import is connected to first valve port, The third valve port is connected to second valve port；

When the heat management system heats, the sliding block is in the second operating position, and the third valve port and the import connect Logical, first valve port is connected to second valve port, and second valve port is not connected to the import.

11. a kind of heat management system, the heat management system includes compressor, indoor heat exchanger, outdoor heat exchanger and throttling member Part, the heat management system further include fluid switching device, and the fluid switching device includes sliding block, slide and import, described First wall of slide is provided with the first valve port, the second valve port, third valve port, and the sliding block includes the first valve portion and the second valve portion, First valve portion is greater than the third valve port along the first party of first wall along the length of the first direction of first wall To bore, second valve portion along the first direction of first wall length be greater than first valve port along first wall First direction bore；First valve portion is greater than the third valve port along institute along the length of the second direction of first wall The bore of the second direction of the first wall is stated, second valve portion is greater than described first along the length of the second direction of first wall Bore of the valve port along the second direction of first wall；

The first port of the outlet of the import and the compressor, first valve port and the outdoor heat exchanger connects Logical, second valve port is directly or indirectly connected to compressor inlet, and the first of the third valve port and the indoor heat exchanger The second port of port connection, the indoor heat exchanger is connected to by restricting element with the second port of the outdoor heat exchanger；

When the heat management system freezes, the import is connected to first valve port, second valve port and the third valve Mouth connection；

When the heat management system heats, third valve port and the inlet communication, first valve port and second valve port connect It is logical.