CN108954915B

CN108954915B - Heat pump unit and flow path switching device thereof

Info

Publication number: CN108954915B
Application number: CN201811092479.0A
Authority: CN
Inventors: 曾显传; 谷月明; 胡乾龙
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2018-09-19
Filing date: 2018-09-19
Publication date: 2023-11-03
Anticipated expiration: 2038-09-19
Also published as: CN108954915A

Abstract

The application provides a heat pump unit and a flow path switching device thereof. The flow path switching device includes: a connecting seat; the first switching component is arranged on one side of the connecting seat, connected with the first flow path system and used for switching the first flow path of the first flow path system; and the second switching assembly is arranged on the other side of the connecting seat, connected with the second flow path system and used for switching the second flow path of the second flow path system. According to the flow path switching device, the first switching component and the second switching component are integrated, so that the number of the valve elements is reduced, the first flow path system and the second flow path system are designed cheaply, the first flow path system and the second flow path system can be controlled more accurately, and the energy efficiency is improved. Meanwhile, the flow path switching device is used for connecting the first flow path system and the second flow path system, so that the after-sale installation difficulty can be reduced.

Description

Heat pump unit and flow path switching device thereof

Technical Field

The application relates to the technical field of air conditioning equipment, in particular to a heat pump unit and a flow path switching device thereof.

Background

At present, most of water path system heat pump units are refrigeration equipment which directly provides cold water or hot water for users and have the functions of refrigeration, heating and heat supply.

In recent years, with the progress of heat pump units in performance and the like, in order to reduce production cost and pressure drop of refrigerant pipelines in design, simultaneously reduce power consumption of a compressor of the unit and reduce structural size, a plurality of heat pump units directly cancel a four-way reversing valve for switching a fluorine path system. In order to provide the cooling and heating functions to the user, only the waterway system switching method can be selected. When the cold water is needed to be provided, switching the outlet water of the evaporator to the use side; when hot water needs to be provided, the condenser water outlet is switched to the use side. The water path system switching mode mainly comprises two modes of four-way valve switching and stop valve switching. Therefore, the number of the valve elements is increased, the control difficulty is correspondingly increased, the energy efficiency of the unit is affected, and the use is inconvenient.

Disclosure of Invention

Based on this, it is necessary to provide a flow path switching device for reducing the number of valve elements and a heat pump unit having the flow path switching device, aiming at the problems of increasing the number of valve elements caused by the current switching of the waterway system to realize the cooling and heating functions.

The above purpose is achieved by the following technical scheme:

a flow path switching device comprising:

a connecting seat;

the first switching component is arranged on one side of the connecting seat, connected with the first flow path system and used for switching the first flow path of the first flow path system; and

and the second switching assembly is arranged on the other side of the connecting seat, connected with the second flow path system and used for switching the second flow path of the second flow path system.

In one embodiment, the first switching assembly includes:

the first shell is arranged on the connecting seat, is provided with a first cavity and four first inlet and outlet holes communicated with the first cavity, is arranged at intervals, penetrates through the first shell and is communicated with the first flow path; and

the first rotating piece is rotatably arranged in the first chamber and divides the first chamber into two mutually independent first closed spaces, and two adjacent first access holes are communicated through the corresponding first closed spaces.

In one embodiment, the first rotating member includes:

the first base is rotatably arranged on the connecting seat so as to seal the first chamber; and

the first partition plate is arranged on the first base, and the edge of the first partition plate is abutted with the inner wall of the first shell.

In one embodiment, the first switching assembly further includes a first driving member located in the connection seat and connected to the first rotating member to drive the first rotating member to rotate relative to the connection seat.

In one embodiment, the first housing is a solid of revolution, and the shape of the first partition plate is adapted to the shape of the first housing.

In one embodiment, the first rotating member further includes a first rolling element disposed on a peripheral side of the first base, and the connection seat has a first rolling groove having an annular shape;

or, the first rotating member further comprises an annular first rolling groove arranged on the circumferential side of the first base, and the connecting seat is provided with a first rolling body;

the first rolling bodies are rollably mounted to the first rolling grooves.

In one embodiment, the flow path switching device further includes a first sealing member disposed between the first housing and the connection seat, and/or disposed between the first base and the connection seat, and/or disposed between the first partition plate and the first housing.

In one embodiment, the second switching component comprises:

the second shell is arranged on the connecting seat, is provided with a second cavity and four second inlet and outlet holes communicated with the second cavity, and the four second inlet and outlet holes are arranged at intervals and penetrate through the second shell to be communicated with the second flow path; and

the second rotating piece is rotatably arranged in the second chamber and divides the second chamber into two mutually independent second closed spaces, and two adjacent second access holes are communicated through the corresponding second closed spaces.

In one embodiment, the second rotating member includes:

the second base is rotatably arranged on the connecting seat so as to close the second chamber; and

the edge of the second partition plate is abutted with the inner wall of the second shell.

In one embodiment, the second switching assembly further includes a second driving member, which is located in the connection seat and connected to the second rotating member, so as to drive the second rotating member to rotate relative to the connection seat.

In one embodiment, the second housing is a revolution body, and the shape of the second partition plate is adapted to the shape of the second housing.

In one embodiment, the second rotating member further includes a second rolling element disposed on a peripheral side of the second base, and the connection seat has a second rolling groove having an annular shape;

or, the second rotating member further comprises an annular second rolling groove arranged on the peripheral side of the second base, and the connecting seat is provided with a second rolling body;

the second rolling bodies are rollably mounted to the second rolling grooves.

In one embodiment, the flow path switching device further includes a second sealing member disposed between the second housing and the connection seat, and/or disposed between the second base and the connection seat, and/or disposed between the second partition plate and the second housing.

A unit device comprising a first flow path system, a second flow path system and a flow path switching device according to any one of the technical features;

the first flow path system is a water path system and is connected with a first switching component of the flow path switching device, and the second flow path system is a fluorine path system and is connected with a second switching component of the flow path switching device.

After the technical scheme is adopted, the application has at least the following technical effects:

the flow path switching device is connected with a first flow path of a first flow path system through the first switching component so as to realize the switching of the first flow path communication, and the second switching component is connected with a second flow path of a second flow path system so as to realize the switching of the second flow path communication. That is, the single switching of the first channel system, the single switching of the second channel system, and the simultaneous switching of the first channel system and the second channel system can be realized by one channel switching device. According to the flow path switching device, the first switching component and the second switching component are integrated, so that the problems that the number of valve elements is increased and the like caused by the fact that the refrigerating and heating functions are achieved through switching of the waterway system at present are effectively solved, the number of the valve elements is reduced, the first flow path system and the second flow path system are designed cheaply, and therefore the first flow path system and the second flow path system can be controlled more accurately, and energy efficiency is improved. Meanwhile, the flow path switching device is used for connecting the first flow path system and the second flow path system, so that the after-sale installation difficulty can be reduced.

Drawings

FIG. 1 is a perspective view of a flow path switching device according to an embodiment of the present application;

FIG. 2 is an exploded view of the flow switching device shown in FIG. 1;

FIG. 3 is a top view of the flow switching device of FIG. 1, wherein the first separator plate is in a position;

fig. 4 is a top view of the flow path switching device of fig. 1, with the first separator plate in another position.

Wherein:

100-a flow path switching device;

110-connecting seats;

111-a first rolling groove;

120-a first switching assembly;

121-a first housing; 1211-a first access port;

122-a first rotating member; 1221-a first base; 1222-a first divider plate; 1223-first rolling bodies;

130-a second switching component;

131-a second housing; 1311-a second access port;

132-second rotating member.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the heat pump unit and the flow path switching device thereof according to the present application will be described in further detail below by way of examples with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Referring to fig. 1 and 2, the present application provides a flow path switching device 100. The flow path switching device 100 is connected to a first flow path system and a second flow path system, and is used for switching a first flow path communicating with the first flow path system and/or switching a second flow path communicating with the second flow path system. It will be appreciated that the first and second flow systems may both deliver liquid, may both deliver gas, and may deliver liquid one by one. The flow path switching device 100 of the present application can be used in a device with complicated pipe switching, such as a device with multiple water paths, gas paths, etc. that needs switching. In this embodiment, the flow path switching device 100 is applied to a heat pump unit, and the first flow path system is a water path system for delivering water, the second flow path system is a fluorine path system for delivering fluorine, and the flow path switching device 100 is used for realizing water path switching of the water path system and fluorine path switching of the fluorine path system. The flow path switching device 100 can reduce the number of the valve elements in the heat pump unit, so as to realize the cheap design of the water path system, optimize the water path system of the heat pump unit and improve the energy efficiency of the heat pump unit.

In one embodiment, the flow path switching device 100 includes a connection base 110, a first switching component 120, and a second switching component 130. The connection base 110 serves as a connection for connecting and mounting the first switching assembly 120 and the second switching assembly 130. The first switching element 120 and the second switching element 130 are respectively located at two sides of the connecting seat 110, so that the first switching element 120 and the second switching element 130 are integrated into a whole. Therefore, the number of valve elements in the heat pump unit can be reduced, so that the design of cheapness of the waterway system is realized, and the waterway system of the heat pump unit is optimized.

The first switching element 120 is connected to the first channel system and is configured to switch the first channel of the first channel system. Specifically, the first switching component 120 is connected to the water path system of the heat pump unit, and is used for switching four water paths of the water path system. The first switching component 120 is connected with four waterways of the heat pump unit, and is used for two-by-two communication of the four waterways and switching the communication of the four waterways. The second switching assembly 130 is connected to the second channel system for switching the second channel of the second channel system. Specifically, the second switching component 130 is connected to the fluorine path system of the heat pump unit, and is used for switching four fluorine paths of the fluorine path system. The first switching component 120 is connected with four fluorine paths of the heat pump unit, and is used for enabling the four fluorine paths to be communicated with each other and realizing the switching of the communication of the fluorine paths.

Thus, the flow path switching device 100 of the present application can realize the individual switching of the water path, the individual switching of the fluorine path, and the simultaneous switching of the water path and the fluorine path. The problems of valve element number increase and the like caused by the current refrigeration and heating functions realized through waterway switching are effectively solved, the number of valve elements in the heat pump unit is reduced, the design of low cost of the waterway system is realized, and the waterway system of the heat pump unit is optimized. After the control of the flow path switching device 100 is connected into the whole machine, the waterway system and the fluorine path system can be controlled more accurately, the operation condition of the waterway system is optimized, the reliability and the service life of the heat pump unit are improved, and the energy efficiency of the heat pump unit is improved. Meanwhile, the flow path switching device 100 of the present application is used to connect the water path and the fluorine path, and the difficulty of after-sales installation can be reduced.

In one embodiment, the first switching assembly 120 includes a first housing 121 and a first rotating member 122. The first housing 121 is mounted on the connection base 110, the first housing 121 has a first chamber and four first access holes 1211 communicating with the first chamber, and the four first access holes 1211 are disposed at intervals and penetrate the first housing 121. The four first inlet and outlet holes 1211 are communicated with the first flow path, i.e., are respectively connected with the corresponding waterways. After the first housing 121 is mounted on the connection base 110, the first chamber is in a sealed state, so that water in the waterway system can be prevented from leaking after entering the first chamber. The first housing 121 has four through-holes 1211, and the four through-holes 1211 are connected to four waterways of the waterway system. The first chamber is communicated with the four waterways respectively, water in the first chamber can enter the waterways, and water in the waterways can enter the first chamber.

The first rotating member 122 is rotatably disposed in the first chamber and divides the first chamber into two independent first enclosed spaces, and two adjacent first access holes 1211 are communicated through the corresponding first enclosed spaces. That is, the waterways corresponding to the adjacent two first inlet and outlet holes 1211 are communicated through the corresponding first closed spaces, one waterway delivering water to the first closed spaces and the other waterway delivering water from the first closed spaces.

The two first airtight spaces are mutually independent and are not communicated, so that water in the two first airtight spaces is enabled to flow in an immiscible manner, and reliable conveying of the waterway system is guaranteed. Also, when the first rotating member 122 rotates, any two adjacent first inlet and outlet holes 1211 may be communicated. Thus, the first inlet and outlet 1211 which is communicated with each other can be changed, the switching of waterways is realized, and the refrigerating and heating functions are further realized.

In one embodiment, the first rotation member 122 includes a first base 1221 and a first divider 1222. The first base 1221 is rotatably mounted to the connection base 110 to enclose a first chamber. The first partition plate 1222 is provided on the first base 1221, and an edge of the first partition plate 1222 abuts against an inner wall of the first casing 121. After the first base 1221 is matched with the first housing 121, the first chamber is in a completely sealed state, and the first partition board 1222 divides the first chamber into two independent first closed spaces. The first partition plate 1222 is driven to synchronously rotate by the rotation of the first base 1221, so that the positions of the two first closed spaces are changed, and the waterway communication is switched.

Optionally, the first base 1221 is integrally formed with the first divider plate 1222. Alternatively, the first partition plate 1222 may have a sheet-like structure, a block-like structure, or a structure that can separate the first chambers and communicate with the adjacent two first access holes 1211.

In an embodiment, the first housing 121 is a solid of revolution, and the shape of the first partition 1222 is adapted to the shape of the first housing 121. Thus, when the first partition plate 1222 rotates, the edge of the first partition plate 1222 can always abut against the inner wall of the first casing 121, so as to ensure the reliability of sealing and avoid water mixing in the two first closed spaces. Alternatively, the shape of the first housing 121 may be hemispherical, cylindrical, semi-elliptical, etc. The first housing 121 is hemispherical in shape, and accordingly, the first divider plate 1222 is semicircular in shape, and the first base 1221 is circular in shape. Furthermore, the connection base 110 may be a solid base or a hollow base.

The four first access holes 1211 in the first housing 121 are a, b, c, d, respectively. When the first rotating member 122 is controlled to rotate about its central axis to the position shown in fig. 3, a is communicated with b, and c is communicated with d. When the first rotating member 122 is controlled to rotate about its central axis to the position shown in fig. 4, a is communicated with d, and b is communicated with c.

Referring to fig. 1 and 2, in an embodiment, the first switching assembly 120 further includes a first driving member located in the connection base 110 and connected to the first rotating member 122 to drive the first rotating member 122 to rotate relative to the connection base 110. The first driving member is a power source of the first switching assembly 120 to drive the first rotating member 122 to rotate, so as to realize switching of waterways. Illustratively, the first driving member is coupled to the first base 1221 to drive the first base 1221 to rotate, thereby driving the first rotating member 122 to rotate. Alternatively, the first driving member is a motor, such as a stepper motor, and the output end of the motor is directly connected to the first base 1221. Of course, the first driving member may also include a motor and a transmission member, and the motor and the transmission member are connected through the transmission member in a transmission manner. The transmission member may be a gear transmission member or the like. At this time, two gears are engaged, one of which is provided at the motor output end and the other of which is mounted to the first base 1221.

In an embodiment, the first rotating member 122 further includes a first rolling element 1223 disposed on a peripheral side of the first base 1221, and the connecting seat 110 has an annular first rolling groove 111. The first rolling bodies 1223 are rollably mounted to the first rolling groove 111. The friction force generated when the first base 1221 rotates can be reduced by the cooperation of the first rolling bodies 1223 and the first rolling grooves 111, so that the rotation of the first base 1221 is stable, and meanwhile, the tightness between the first base 1221 and the connecting seat 110 can be ensured, and water leakage is avoided. Of course, in other embodiments of the application, the positions of the first rolling elements 1223 and the first rolling grooves 111 may be interchanged. That is, the first rotation member 122 further includes an annular first rolling groove 111 provided at the circumferential side of the first base 1221, and the connection seat 110 has the first rolling bodies 1223. Optionally, the rolling bodies are balls or balls, etc.

In an embodiment, the flow path switching device 100 further includes a first seal disposed between the first housing 121 and the connection base 110, and/or disposed between the first base 1221 and the connection base 110, and/or disposed between the first partition 1222 and the first housing 121. That is, the first seals are respectively provided at the rotational joints of the first switching assembly 120 to prevent water leakage. The first sealing member is exemplified by a rubber ring, a rubber pad, or the like. Optionally, the first sealing member is coated with lubricating oil, so as to ensure that the first rotating member 122 rotates stably, avoid interference, and facilitate the switching of waterways.

In an embodiment, the structure of the second switching element 130 is identical to the structure of the first switching element 120. Specifically, the second switching assembly 130 includes a second housing 131 and a second rotating member 132. The second housing 131 is mounted on the connection base 110, the second housing 131 has a second chamber, four second access holes 1311 communicating with the second chamber, and the four second access holes 1311 are spaced apart and penetrate the second housing 131. The four second inlet and outlet holes 1311 are connected to the second flow paths, i.e., to the corresponding fluorine paths, respectively. After the second housing 131 is mounted on the connection base 110, the second chamber is in a sealed state, so that fluorine in the fluorine path system can be prevented from leaking after entering the second chamber. The second housing 131 has four second inlet/outlet holes 1311 formed therethrough, and the four second inlet/outlet holes 1311 are connected to four fluorine lines of the fluorine line system. The second chamber is respectively communicated with the four fluorine paths, fluorine in the second chamber can enter the fluorine paths, and fluorine in the fluorine paths can enter the second chamber.

The second rotating member 132 is rotatably disposed in the second chamber and divides the second chamber into two independent second enclosed spaces, and two adjacent second access holes 1311 are communicated through the corresponding second enclosed spaces. That is, the fluorine paths corresponding to the two adjacent second inlet and outlet holes 1311 are communicated through the corresponding second closed spaces, wherein one fluorine path transmits fluorine to the second closed space, and the other fluorine path outputs fluorine from the second closed space.

The two second closed spaces are mutually independent and are not communicated, so that the immiscible flow of fluorine in the two second closed spaces can be ensured, and the conveying reliability of a fluorine path system is ensured. Moreover, when the second rotating member 132 rotates, any two adjacent second inlet and outlet holes 1311 can be communicated. In this way, the second inlet and outlet holes 1311 which are communicated with each other can be changed, so that the fluorine path can be switched, and the functions of refrigeration and heating can be further achieved.

In one embodiment, the second rotating member 132 includes a second base and a second partition. The second base is rotatably mounted on the connection base 110 to close the second chamber. The second partition plate is disposed on the second base, and an edge of the second partition plate abuts against an inner wall of the second housing 131. After the second base is matched with the second shell 131, the second chamber is in a complete sealing state, and the second partition plate divides the second chamber into two mutually independent second closed spaces. The second partition plates are driven to synchronously rotate through rotation of the second base, positions of the two second closed spaces are changed, and fluorine path communication switching is achieved.

Optionally, the second base and the second partition plate are integrally formed. Alternatively, the second partition plate may have a sheet-like structure, a block-like structure, or a structure that can separate the second chambers and communicate with two adjacent second access holes 1311.

In an embodiment, the second housing 131 is a revolving body, and the shape of the second partition plate is adapted to the shape of the second housing 131. When the second partition plate rotates, the edge of the second partition plate can be always abutted against the inner wall of the second shell 131, so that the sealing reliability is ensured, and fluorine mixed flow in two second closed spaces is avoided. Alternatively, the shape of the second housing 131 may be hemispherical, cylindrical, semi-elliptical, etc. The second housing 131 is hemispherical, and the second partition plate is semicircular, and the second base is circular.

It is understood that the communication principle of the four second access holes 1311 on the second housing 131 is the same as that of the four first access holes 1211 on the first housing 121, and will not be described in detail herein.

In an embodiment, the second switching assembly 130 further includes a second driving member disposed in the connecting seat 110 and connected to the second rotating member 132 to drive the second rotating member 132 to rotate relative to the connecting seat 110. The second driving member is a power source of the second switching assembly 130, so as to drive the second rotating member 132 to rotate, thereby realizing the switching of the fluorine path. For example, the second driving member is connected to the second base to drive the second base to rotate, so as to drive the second rotating member 132 to rotate. Optionally, the second driving element is a motor, such as a stepper motor, and an output end of the motor is directly connected with the second base. Of course, the second driving member may also include a motor and a transmission member, and the motor and the transmission member are connected through the transmission member in a transmission manner. The transmission member may be a gear transmission member or the like. At this time, two gears are meshed, one gear is arranged at the output end of the motor, and the other gear is arranged on the second base.

In an embodiment, the second rotating member 132 further includes a second rolling element disposed on a peripheral side of the second base, and the connection seat 110 has an annular second rolling groove. The second rolling bodies are rollably mounted to the second rolling grooves. The friction force when the second base rotates can be reduced by the cooperation of the second rolling bodies and the second rolling grooves, the rotation stability of the second base is guaranteed, and meanwhile, the tightness between the second base and the connecting seat 110 can be guaranteed, and fluorine leakage is avoided. Of course, in other embodiments of the application, the positions of the second rolling elements and the second rolling grooves may be interchanged. That is, the second rotating member 132 further includes an annular second rolling groove provided at the circumferential side of the second base, and the connection seat 110 has the second rolling body. Optionally, the rolling bodies are balls or balls, etc.

In an embodiment, the flow path switching device 100 further includes a second sealing member disposed between the second housing 131 and the connection seat 110, and/or disposed between the second base and the connection seat 110, and/or disposed between the second partition plate and the second housing 131. That is, the second seals are respectively provided at the rotational joints of the second switching assembly 130 to avoid fluorine leakage. The second sealing member is exemplified by a rubber ring, a rubber pad, or the like. Optionally, the second sealing member is coated with lubricating oil, so as to ensure that the second rotating member 132 rotates stably, avoid interference, and facilitate the switching of the fluorine path.

The flow path switching device 100 of the present application is connected to a waterway through four first inlet/outlet holes 1211 of the first casing 121, and to a fluorine shutoff path through four second inlet/outlet holes 1311 of the second casing 131. After the pipe connection is completed, the inside of the first casing 121 and the inside of the second casing 131 are in a completely sealed state, and gas and liquid cannot leak. The first rotary member 122 divides the first housing 121 into two first sealed spaces, and the second rotary member 132 divides the second chamber of the second subject into second sealed spaces.

It will be appreciated that the first rotating member 122 is controlled to rotate by a first driving member and the second rotating member 132 is controlled to rotate by a second driving member. The control of the first driving part and the control of the second driving part are integrated and connected into a control system of the heat pump unit, and signals are independently given through the switching of the heat pump unit to the water side and the fluorine side.

Moreover, the first rotating member 122 and the second rotating member 132 can rotate independently along the central axis, and the two members do not interfere with each other. That is, when the first rotating member 122 is controlled to rotate, the second rotating member 132 may be controlled to rotate or the second rotating member 132 may be kept stationary. Therefore, the effect that water can be communicated, and the refrigerant can be communicated or used simultaneously is achieved. Therefore, different pipelines are selected for communication according to the requirements of the heat pump unit, the requirements of customers are met to the maximum extent, and convenience and quickness are realized. In addition, the flow path switching device 100 of the present application maximizes the design of the heating and ventilation system, thereby precisely controlling the water conservancy switching system.

The application also provides a heat pump unit, which comprises a first flow path system, a second flow path system and the flow path switching device 100 in any embodiment. The first channel system is a waterway system and is connected to the first switching element 120 of the channel switching device 100, and the second channel system is a fluorine channel system and is connected to the second switching element 130 of the channel switching device 100. The heat pump unit provided by the application adopts the flow path switching device 100, so that the number of valve elements can be reduced, the optimization of a waterway system is realized, the complexity of the waterway system is reduced, the installation cheapness of the heat pump unit is increased, and the after-sale installation difficulty is reduced. Meanwhile, after the flow path switching device 100 is connected into the heat pump unit, the waterway system can be controlled more accurately, the operation condition of the waterway system is optimized, and the reliability and the service life of the heat pump unit are improved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be regarded as the description scope of the present specification.

The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. A flow path switching device, comprising:

a connection base (110);

a first switching unit (120) installed at one side of the connection base (110) and connected to a first channel system for switching a first channel of the first channel system; and

a second switching assembly (130) installed at the other side of the connection base (110), connected to a second flow path system, for switching a second flow path of the second flow path system;

the first switching assembly (120) comprises a first shell (121) and a first rotating piece (122), the first shell (121) is mounted on the connecting seat (110) and is provided with a first cavity and four first access holes (1211) communicated with the first cavity, and the four first access holes (1211) are arranged at intervals and penetrate through the first shell (121) and are communicated with the first flow path;

the first rotating member (122) comprises a first base (1221) and a first partition plate (1222) arranged on the first base (1221), the first base (1221) and the first partition plate (1222) are in an integral structure, the first base (1221) is rotatably installed on the connecting seat (110) so as to seal the first chamber and divide the first chamber into two mutually independent first closed spaces, and two adjacent first access holes (1211) are communicated through the corresponding first closed spaces; an edge of the first partition plate (1222) is in contact with an inner wall of the first case (121).

2. The flow path switching device according to claim 1, wherein the first switching assembly (120) further comprises a first driving member located in the connection seat (110) and connected to the first rotating member (122) to drive the first rotating member (122) to rotate relative to the connection seat (110).

3. The flow path switching device according to claim 1, wherein the first housing (121) is a solid of revolution, and the shape of the first partition plate (1222) is adapted to the shape of the first housing (121).

4. The flow path switching device according to claim 1, wherein the first rotating member (122) further includes a first rolling element (1223) provided on a peripheral side of the first base (1221), and the connection seat (110) has a first rolling groove (111) having an annular shape;

alternatively, the first rotating member (122) further includes an annular first rolling groove (111) provided on the circumferential side of the first base (1221), and the connection seat (110) includes a first rolling element (1223);

the first rolling element (1223) is rollably mounted to the first rolling groove (111).

5. The flow path switching device according to claim 1, further comprising a first seal arranged between the first housing (121) and the connection seat (110) and/or between the first base (1221) and the connection seat (110) and/or between the first partition plate (1222) and the first housing (121).

6. The flow path switching device according to any one of claims 1 to 5, wherein the second switching assembly (130) includes:

the second shell (131) is arranged on the connecting seat (110), the second shell (131) is provided with a second cavity and four second inlet and outlet holes (1311) communicated with the second cavity, and the four second inlet and outlet holes (1311) are arranged at intervals and communicated with the second flow path through the second shell (131); and

the second rotating piece (132) is rotatably arranged in the second chamber and divides the second chamber into two mutually independent second closed spaces, and two adjacent second access holes (1311) are communicated through the corresponding second closed spaces.

7. The flow path switching device according to claim 6, wherein the second rotating member (132) includes:

a second base rotatably mounted to the connection base (110) to close the second chamber; and

and the edge of the second partition plate is abutted with the inner wall of the second shell (131).

8. The flow path switching device according to claim 6, wherein the second switching assembly (130) further comprises a second driving member located in the connection seat (110) and connected to the second rotating member (132) to drive the second rotating member (132) to rotate relative to the connection seat (110).

9. The flow path switching device according to claim 7, wherein the second housing (131) is a solid of revolution, and the shape of the second partition plate is adapted to the shape of the second housing (131).

10. The flow path switching device according to claim 7, wherein the second rotating member (132) further includes a second rolling element provided on a peripheral side of the second base, and the connection seat (110) has an annular second rolling groove;

or, the second rotating member (132) further includes an annular second rolling groove provided on the second base circumferential side, and the connection seat (110) has a second rolling element;

the second rolling bodies are rollably mounted to the second rolling grooves.

11. The flow path switching device according to claim 7, further comprising a second seal provided between the second housing (131) and the connection seat (110), and/or between the second base and the connection seat (110), and/or between the second partition plate and the second housing (131).

12. A unit apparatus comprising a first flow path system, a second flow path system, and the flow path switching device according to any one of claims 1 to 11;

the first flow path system is a water path system and is connected with a first switching component (120) of the flow path switching device, and the second flow path system is a fluorine path system and is connected with a second switching component (130) of the flow path switching device.