Reversing valve assembly and pipeline machine with same

Abstract

The embodiment of the utility model provides a reversing valve assembly and a pipeline machine with the reversing valve assembly, and the reversing valve assembly comprises a valve shell, a valve core, a first valve core, a second valve core, a third valve core and a fourth valve core, the valve element is movably arranged in the valve shell between a first station and a second station, a first flow channel, a second flow channel, a third flow channel and a fourth flow channel which are not communicated with one another are arranged on the valve element, when the valve element is located at the first station, the first flow channel is communicated between the first water opening and the third water opening, and when the valve element is located at the second station, the third flow channel is communicated between the third water opening and the fourth water opening; the second runner is communicated between the second water gap and the fourth water gap; when the valve element is located at the second station, the third flow channel is communicated between the first water opening and the fourth water opening, and the fourth flow channel is communicated between the second water opening and the third water opening. Through the movement of the valve core, the communication mode of a water path adopting the reversing valve assembly can be changed, and then the purpose of switching different water sources connected with the water path is achieved. The reversing valve assembly is simple in structure and convenient to switch.

Description

Technical Field

[0001] The utility model relates to the technical field of drinking water equipment, in particular to a reversing valve assembly and a pipeline machine with the reversing valve assembly. Background Art

[0002] Pipeline machines are widely popular among users because they can provide additional functions to water purifiers and are used in various occasions where hot and cold water are required.

[0003] When the water purifier fails, the filter needs to be replaced, or the municipal water source cannot supply water to the water purifier, the pipeline machine will not work properly. So the idea of ​​providing an additional water source for the pipeline machine was proposed. The most commonly used backup water source includes bottled purified water. Usually, a water tank is set in the pipeline machine, which can store the purified water prepared in advance by the water purifier. The water in the water tank can be pumped to the water intake by a water pump.

[0004] When switching to a backup water source, an existing pipeline machine usually needs to be equipped with an additional water pump. This not only greatly increases the cost of the pipeline machine, but also leads to complex pipelines, crowded space, and high assembly and maintenance costs. How to use fewer components to pump the backup water source to the water intake is the problem to be solved by this application. Utility Model Content

[0005] In order to at least partially solve the problems existing in the prior art, some embodiments of the present invention provide a reversing valve assembly, including: a valve housing, the valve housing having a first water port, a second water port, a third water port and a fourth water port; and a valve core, the valve core is movably arranged in the valve housing between a first station and a second station, and the valve core is provided with a first flow channel, a second flow channel, a third flow channel and a fourth flow channel that are not connected to each other, wherein, when the valve core is in the first station, the first flow channel is connected between the first water port and the third water port, and the second flow channel is connected between the second water port and the fourth water port; and when the valve core is in the second station, the third flow channel is connected between the first water port and the fourth water port, and the fourth flow channel is connected between the second water port and the third water port.

[0006] In the above technical solution, by moving the valve core between the first station and the second station, the first water inlet and the second water inlet can be exchanged with the third water inlet and the fourth water inlet. By swapping the connection relationship between the third water inlet and the fourth water inlet and the first water inlet and the second water inlet at different stations, the path of the fluid can be changed, and the waterways before and after the swap do not interfere with each other. Therefore, the connection mode of the waterway using the reversing valve assembly can be changed, thereby achieving the purpose of switching different water sources connected to the waterway. The reversing valve assembly has a simple structure, is relatively easy to manufacture and assemble, occupies less space, and is easy to switch.

[0007] Illustratively, the valve core is rotatable around a predetermined axis.

[0008] Compared with the switching method of the valve core moving horizontally in the valve housing, the valve core can be switched between the first and second positions by rotating the valve core. The valve core only needs a mechanism such as a motor that rotates at the output end to drive it, and does not need to use a more complex linear motion mechanism. The structure is simple. Only a space for the valve core to rotate is required inside the valve housing, so the size of the reversing valve assembly is more compact.

[0009] Exemplarily, the first flow channel and the second flow channel penetrate the valve core in a direction perpendicular to the predetermined axis, and the third flow channel and the fourth flow channel extend spirally around the predetermined axis.

[0010] In this way, the lengths of the first flow channel and the second flow channel are relatively short. The third flow channel and the fourth flow channel can minimize the interference with the first flow channel and the second flow channel, thereby ensuring that the valve core has a greater mechanical strength while minimizing the volume of the valve core.

[0011] Exemplarily, a center line of the first flow channel and a center line of the second flow channel intersect the predetermined axis.

[0012] Compared with the embodiment in which the center line of the first flow channel and the center line of the second flow channel are perpendicular but do not intersect with the predetermined axis PP, in the embodiment in which the center line of the first flow channel and the center line of the second flow channel are perpendicular and intersect with the predetermined axis PP, the first flow channel and the second flow channel have relatively long lengths, but this will make the distances between the first flow channel and the second flow channel and the outer side walls of the valve core on both sides of the flow channels larger, thereby making the valve core have higher mechanical strength, especially when the valve core is made of injection molding process.

[0013] Exemplarily, a centerline of the first flow channel is parallel to a centerline of the second flow channel.

[0014] Compared with the embodiment in which the center line of the first flow channel and the center line of the second flow channel are not parallel, the center line of the first flow channel and the center line of the second flow channel are parallel to each other, so that the arrangement of the four water ports on the valve housing is more regular, and thus more convenient to process.

[0015] Exemplarily, the third flow channel and the fourth flow channel are grooves formed on the side surface of the valve core.

[0016] Compared with installing a pipe on the valve core, by constructing a groove on the valve core, large-scale production can be achieved through processes such as injection molding, with a simple structure and low cost.

[0017] Exemplarily, the third flow channel and the fourth flow channel respectively have a third orthographic projection and a fourth orthographic projection in a plane perpendicular to the predetermined axis, and the third orthographic projection and the fourth orthographic projection do not overlap or only the ends overlap with each other.

[0018] The third flow channel and the fourth flow channel designed in this way are distributed on the outer surface of the valve core with a large distance between them and do not interfere with each other, thus reducing the difficulty of design and processing.

[0019] Exemplarily, a line between two ends of the third orthographic projection and a line between two ends of the fourth orthographic projection are perpendicular to a center line of the first flow channel and a center line of the second flow channel.

[0020] This can fully increase the distance between each flow channel, so that even if there are errors in processing, the valve core can have enough tolerance to ensure the function. In addition, such a design can not only thicken each flow channel to a certain extent, but also simplify the design and processing, with a better cost performance.

[0021] Exemplarily, the valve core has a first end and a second end opposite to each other along a predetermined axis, the first flow channel and the second flow channel are respectively located at the first end and the second end, and the third flow channel and the fourth flow channel both extend from the first end to the second end.

[0022] In this way, the space on the valve core can be fully utilized.

[0023] Exemplarily, the first flow channel, the second flow channel, the third flow channel and the fourth flow channel are connected by being aligned with corresponding water ports, respectively.

[0024] This enables the function of switching by rotating the valve core.

[0025] Exemplarily, the reversing valve assembly further includes a driving member, an output end of which is connected to the valve core, and the valve core is movable between a first position and a second position under the action of the driving member.

[0026] By providing a driving member, the reversing valve assembly can be controlled by an electrical signal. The driving member can also include a limiting mechanism to prevent the reversing valve assembly from being damaged by excessive rotation.

[0027] According to another aspect of the utility model, a pipeline machine is provided, having a first water inlet, a second water inlet and a water intake, the pipeline machine comprising: the above-mentioned reversing valve assembly; a pumping device, the water inlet of the pumping device is connected to the third water inlet of the reversing valve assembly, and the water outlet of the pumping device is connected to the fourth water inlet of the reversing valve assembly; a first pipeline, the water inlet of the first pipeline is connected to the first water inlet and the water outlet is connected to the first water inlet of the reversing valve assembly, and a first one-way valve is arranged on the first pipeline; a second pipeline, the water inlet of the second pipeline is connected to the second water inlet and the water outlet is connected to the second water inlet of the reversing valve assembly, and a second one-way valve is arranged on the second pipeline; a third pipeline, the water inlet of the third pipeline is connected to the first water inlet and the water outlet is connected to the water intake, and a third one-way valve is arranged on the third pipeline; and a fourth pipeline, the water inlet of the fourth pipeline is connected to the second water inlet and the water outlet is connected to the water intake, and a fourth one-way valve is arranged on the fourth pipeline.

[0028] In this way, by setting the reversing valve assembly and the one-way valve, the water source can be switched at low cost and simply. The simple water circuit can facilitate production, assembly and maintenance, and is not prone to water leakage. The reversing valve assembly is simple to control, which can simplify program design.

[0029] Exemplarily, the pipeline machine further includes a water tank connected in series to the first pipeline, and the first one-way valve is arranged downstream of the water tank.

[0030] The water tank of the pipeline machine can store clean water, and according to the user's settings or test results, the reversing valve assembly selects the clean water in the water tank or other water sources to provide to the user.

[0031] Exemplarily, the pipeline machine further includes a heating component, a water inlet of the heating component is connected to the water inlets of the third pipeline and the fourth pipeline, and a water outlet of the heating component is connected to the water intake.

[0032] This allows heated water to be provided based on the temperature built into the pipeline machine or the temperature set by the user, enriching the user experience.

[0033] Exemplarily, the first water inlet is used to connect to a water purifier, and the second water inlet is used to connect to bottled water.

[0034] In this way, the pipeline machine can switch between the water purifier and bottled water manually or automatically, which is simple to operate and does not require additional switching devices. The pipeline machine can make program adjustments according to the water source corresponding to the reversing valve assembly, and perform different treatments for different water sources.

[0035] A series of simplified concepts are introduced in the utility model content, which will be further described in detail in the detailed implementation section. The utility model content section does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0036] The advantages and features of the present invention are described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The following drawings of the present invention are used as part of the present invention for understanding the present invention. The drawings show the implementation of the present invention and its description, and are used to explain the principle of the present invention. In the drawings,

[0038] Figure 1 is a perspective view of a reversing valve assembly according to a first set of exemplary embodiments of the present utility model;

[0039] Figure 2A for Figure 1 A cross-sectional view of the valve core of the reversing valve assembly shown in the first working position;

[0040] Figure 2B for Figure 1 A cross-sectional view of the valve core of the reversing valve assembly shown in the second working position;

[0041] Figure 3 for Figure 1 A three-dimensional view of a valve housing of a reversing valve assembly shown;

[0042] Figure 4A for Figure 1 A three-dimensional view of the valve core of the reversing valve assembly shown;

[0043] Figure 4B for Figure 4A A longitudinal cross-sectional view of the valve core shown;

[0044] Figure 4C for Figure 4A A transverse cross-sectional view of the valve core shown;

[0045] Figure 5A-5B is a schematic diagram of a reversing valve assembly according to a second group of exemplary embodiments of the present utility model;

[0046] Figure 6A-6B is a schematic diagram of a reversing valve assembly according to a third group of exemplary embodiments of the present utility model;

[0047] Figure 7 A perspective view of a reversing valve assembly according to a first exemplary embodiment of the present utility model after installing a driver and a pumping device; and

[0048] Figure 8 It is a waterway diagram of a pipeline machine according to an exemplary embodiment of the utility model.

[0049] The above drawings include the following reference numerals:

[0050] 100, reversing valve assembly; 110, valve housing; 111 / 111' / 111", first water inlet; 112 / 112' / 112", second water inlet; 113 / 113' / 113", third water inlet; 114 / 114' / 114", fourth water inlet; 120 / 120' / 120", valve core; 121 / 121' / 121", first flow channel; 121A / 121A', first end of the first flow channel; 121B / 121B', second end of the first flow channel; 122 / 122' / 122", second flow channel; 122A / 122A', first end of the second flow channel; 122B / 122B', second end of the second flow channel; 123 / 123' / 123", third flow channel; 123A / 123A' / 123A”, the first end of the third flow channel; 123B / 123B' / 123B”, the second end of the third flow channel; 124 / 124' / 124”, the fourth flow channel; 124A / 124A' / 124A”, the first end of the fourth flow channel; 124B / 124B' / 124B”, the second end of the fourth flow channel; 130, the driving member; 200, the pipeline machine; 201, the first water inlet; 202, the second water inlet; 203, the water intake; 210, the pumping device; 220, the first pipeline; 221, the first one-way valve; 230, the second pipeline; 231, the second one-way valve; 240, the third pipeline; 241, the third one-way valve; 250, the fourth pipeline; 251, the fourth one-way valve; 260, the heating component; 270, the water tank. DETAILED DESCRIPTION

[0051] In the following description, a large number of details are provided so that the present invention can be thoroughly understood. However, it will be appreciated by those skilled in the art that the following description only illustrates preferred embodiments of the present invention, and the present invention can be implemented without one or more of such details. In addition, in order to avoid confusion with the present invention, some technical features known in the art are not described in detail.

[0052] In order to thoroughly understand the implementation of the utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the utility model is not limited to the specific details familiar to those skilled in the art. The preferred implementation of the utility model is described in detail below, but in addition to these detailed descriptions, the utility model can also have other implementations.

[0053] The embodiment of the utility model provides a reversing valve assembly. Figures 1 to 7The reversing valve assembly 100 may include a valve housing 110 and a valve core 120. The valve housing 110 may be provided with a first water port 111, a second water port 112, a third water port 113, and a fourth water port 114. The valve core 120 may be provided in the valve housing 110 and may be movable between a first station and a second station.

[0054] The valve core 120 is provided with a first flow channel 121, a second flow channel 122, a third flow channel 123 and a fourth flow channel 124 which are not connected to each other. Figure 2A As shown, when the valve core 120 is in the first position, the first flow channel 121 is connected between the first water port 111 and the third water port 113, and the second flow channel 122 is connected between the second water port 112 and the fourth water port 114. A fluid can pass through the first water port 111 and the first flow channel 121 in sequence to reach the third water port 113, and another fluid can pass through the second water port 112 and the second flow channel 122 to reach the fourth water port 114, and the two fluids do not interfere with each other. At this time, the third flow channel 123 and the fourth flow channel 124 are in an idle state. Reference Figure 2B , when the valve core 120 is in the second position, the third flow channel 123 is connected between the first water inlet 111 and the fourth water inlet 114, and the fourth flow channel 124 is connected between the second water inlet 112 and the third water inlet 113. At this time, the first flow channel 121 and the second flow channel 122 are in an idle state. Simply put, when the valve core 120 switches from the first position to the second position, the connection relationship between the first water inlet 111, the second water inlet 112 and the third water inlet 113, the fourth water inlet 114 is swapped, that is, in the first position, the connection relationship is that the first water inlet 111 is connected to the third water inlet 113, and the second water inlet 112 is connected to the fourth water inlet 114; in the second position, the corresponding relationship is that the first water inlet 111 is connected to the fourth water inlet 114, and the second water inlet 112 is connected to the third water inlet 113.

[0055] In the illustrated embodiment, the valve core 120 is rotatable between the first station and the second station. In an embodiment not shown, the first station and the second station can be switched by, for example, translation, for example, the valve core can translate inside the valve housing, when the valve core moves to one end of the valve housing, the first water port is connected to the third water port, and the second water port is connected to the fourth water port; when the valve core moves to the other end of the valve housing, the first water port is connected to the fourth water port, and the second water port is connected to the third water port. The third flow channel and the fourth flow channel can be formed in a spiral on the surface of the valve core as shown in the figure, or they can be connected by two pipes that are not connected to each other, such as a plastic pipe or a silicone pipe, etc., arranged inside the valve core.

[0056] In the above technical solution, by moving the valve core 120 between the first station and the second station, the first water inlet 111 and the second water inlet 112 can exchange the connection relationship with the third water inlet 113 and the fourth water inlet 114. By swapping the connection relationship between the third water inlet 113 and the fourth water inlet 114 and the first water inlet 111 and the second water inlet 112 at different stations, the path of the fluid can be changed, and the waterways before and after the swap do not interfere with each other. Therefore, the connection mode of the waterway using the reversing valve assembly 100 can be changed, thereby achieving the purpose of switching different water sources connected to the waterway. The reversing valve assembly 100 has a simple structure, is relatively easy to manufacture and assemble, occupies less space, and is easy to switch.

[0057] For example, the valve core 120 is rotatable around a predetermined axis PP. Compared with the switching mode in which the valve core 120 translates in the valve housing 110, by rotating the valve core 120 to switch between the first and second positions, the valve core 120 only needs a mechanism such as a motor that rotates the output end to drive it, and does not need to use a more complex linear motion mechanism, so the structure is simple. Only a space for the valve core 120 to rotate needs to be set inside the valve housing 110, so the size of the reversing valve assembly 100 is more compact.

[0058] Combined with reference Figure 2A-2B and Figures 4A-4C , illustratively, the first flow channel 121 and the second flow channel 122 of the valve core 120 can pass through the valve core 120 in a straight line. In this way, the lengths of the first flow channel 121 and the second flow channel 122 are relatively short. The third flow channel 123 and the fourth flow channel 124 can extend spirally around a predetermined axis PP. The third flow channel 123 and the fourth flow channel 124 can minimize the interference with the first flow channel 121 and the second flow channel 122, thereby having greater mechanical strength while ensuring that the volume of the valve core 120 is minimized.

[0059] In the illustrated embodiment, the center line of the first flow channel 121 and the center line of the second flow channel 122 are parallel to each other, and both intersect and are perpendicular to the predetermined axis PP. Thus, the first water inlet 111 and the second water inlet 112 are respectively symmetrically arranged on the valve housing 110 with respect to the predetermined axis PP to the third water inlet 113 and the fourth water inlet 114. Accordingly, the third flow channel 123 and the fourth flow channel 124 extend helically for half a turn. Of course, if desired, the third flow channel 123 and the fourth flow channel 124 may also extend helically for 1.5 turns, 2.5 turns, etc.

[0060] like Figure 2A-2B As shown in FIG. 4B-4C , the center of the first end 123A of the third flow channel 123, the center of the second end 124B of the fourth flow channel 124, and the center line of the first flow channel 121 are located in a first transverse plane M perpendicular to the predetermined axis PP, wherein Figure 4Cis a cross-sectional view obtained by cutting the first transverse plane M. The center of the second end 123B of the third flow channel 123, the center of the first end 124A of the fourth flow channel 124, and the center line of the second flow channel 122 are located in the second transverse plane N perpendicular to the predetermined axis PP. Therefore, the center of the first water inlet 111 and the center of the third water inlet 113 can be located in the first transverse plane M, and the center of the second water inlet 112 and the center of the fourth water inlet 114 can be located in the second transverse plane N. The first end 121A of the first flow channel 121 is connected to the first water inlet 111 (see Figure 2A ) and the first end 123A of the third flow channel 123 is connected to the first water inlet 111 (see Figure 2B ), correspondingly, the second end 121B of the first flow channel 121 and the second end 123B of the third flow channel 123 are connected to the third water inlet 113 and the fourth water inlet 114 respectively. Similarly, the first end 122A of the second flow channel 122 is connected to the second water inlet 112 (see Figure 2A ) and the first end 124A of the fourth flow channel 124 is connected to the second water inlet 112 (see Figure 2B ), correspondingly, the second end 122B of the second flow channel 122 and the second end 124B of the fourth flow channel 124 are connected to the third water inlet 113 and the fourth water inlet 114 respectively.

[0061] exist Figures 1 to 4A In the first embodiment shown in FIG. 4C, the center line of the first flow channel 121 and the center line of the second flow channel 122 are perpendicular, and the center lines of the first flow channel 121 and the second flow channel 122 intersect with the predetermined axis PP and are parallel to each other. In the second embodiment, the center line of the first flow channel 121' and the center line of the second flow channel 122' may also be perpendicular, and the center lines of the first flow channel 121' and the second flow channel 122' intersect with the predetermined axis PP, but are not parallel to each other. Figure 5A-5B For one of the second group of embodiments, the projection of the four flow channels on the valve core 120' in a transverse plane perpendicular to the predetermined axis PP is shown, wherein for the communication relationship between the four flow channels and the four water ports on the valve housing, Figure 5A-5B The positions of the four water outlets are also simply shown with arrows.

[0062] The first flow channel 121' and the second flow channel 122' have a first orthographic projection and a second orthographic projection respectively in the transverse plane (the first orthographic projection continues to use 121' in the figure, and the second orthographic projection continues to use 122'), and the predetermined axis intersects the transverse plane at a central point P. The third flow channel 123' and the fourth flow channel 124' have a third orthographic projection and a fourth orthographic projection respectively in the transverse plane (the third orthographic projection continues to use 123' in the figure, and the fourth orthographic projection continues to use 124'). Figure 5AThe valve core 120' is in the first position, where the first flow channel 121' is connected between the first water inlet 111' and the third water inlet 113', and the second flow channel 122' is connected between the second water inlet 112' and the fourth water inlet 114'. Figure 5B As shown, the third flow channel 123' is connected between the first water inlet 111' and the fourth water inlet 114', and the fourth flow channel 124' is connected between the second water inlet 112' and the third water inlet 113'. As shown in the figure, there is a certain angle α between the first flow channel 121' and the second flow channel 122'. The angle α determines the angle between the first water inlet 111' and the fourth water inlet 114' on the valve housing and the center point P of the predetermined axis. Therefore, the angle between the two ends 123A' and 123B' of the spirally extended third flow channel 123' and the line connecting the projection P should also be α, see Figure 5B Similarly, the angle between the two ends 124A' and 124B' of the spirally extending fourth flow channel 124' and the line connecting the projection P should also be α (not shown). In this way, compared with the first group of embodiments, the lengths of the third flow channel 123' and the fourth flow channel 124' can be shortened.

[0063] In the first group of embodiments, α is 180 degrees. In the second group of embodiments, α can be any angle between greater than 0 degrees and less than 180 degrees.

[0064] In the third set of embodiments, Figure 6A-6B As shown, the first flow channel 121" and the second flow channel 122" may also be perpendicular, and the center line of the first flow channel 121" and the center line of the second flow channel 122" do not intersect with the predetermined axis PP, but are parallel to each other. The projections of the first flow channel 121" and the second flow channel 122" in a transverse plane perpendicular to the predetermined axis PP overlap with each other. There is a first angle θ1 between the lines connecting the two ends of the first flow channel 121" and the second flow channel 122" and the center point P, and the first angle is less than 180 degrees. The third flow channel 123" and the fourth flow channel 124" extend spirally around the predetermined axis PP, and the third flow channel 123" and the fourth flow channel 124" have a third orthographic projection and a fourth orthographic projection in the transverse plane, respectively (the third orthographic projection in the figure continues to use 123", and the fourth orthographic projection continues to use 124"), and one of 123" and 124" is a major arc with the center point P as the origin, and the other is a minor arc. Each of the two ends of the third and fourth orthographic projections has a second angle θ2 with the line connecting the center point P, and the second angle is less than 180 degrees. Fig. 6AAs shown, the first flow channel 121" is connected between the first water port 111" and the third water port 113", and the second flow channel 122" is connected between the second water port 112" and the fourth water port 114". The first angle θ1 is equal to the second angle θ2, so that after the valve core 120" rotates the switching angle θ3, the third flow channel 123" and the fourth flow channel 124" can replace the first flow channel 121" and the second flow channel 122", and respectively connect between the first water port 111" and the fourth water port 114", and between the second water port 112" and the third water port 113". Since the projections of the first flow channel 121" and the second flow channel 122" in the transverse plane overlap with each other, the first water port 111" and the second water port 112" coincide, and the third water port 113" and the fourth water port 114" overlap. 14” overlap, but in fact, the first water outlet 111” and the second water outlet 112” are spaced apart along the extension direction of the predetermined axis PP, and the third water outlet 113” and the fourth water outlet 114” are also spaced apart. Correspondingly, the projections of the first end 123A” of the third flow channel 123” and the first end 124A” of the fourth flow channel 124” overlap with each other, but in fact, they are spaced apart along the extension direction of the predetermined axis PP; the projections of the second end 123B” of the third flow channel 123” and the second end 124B” of the fourth flow channel 124” overlap with each other, but in fact, they are also spaced apart.

[0065] In the above embodiment, the phase difference between the first angle θ1 and the second angle θ2 (i.e., the valve core 120" rotation switching angle θ3) can be equal to half of θ1. In summary, the above technical solution can ensure that after the valve core 120 / 120' / 120" rotates a preset angle, the corresponding flow channel is connected to the corresponding water outlet, and the structure is simple and the manufacturing cost is low.

[0066] In the above three sets of embodiments, the first flow channel and the second flow channel have equal lengths, but in other embodiments not shown, the lengths of the first flow channel and the second flow channel may be different. For example, the center line of one of them intersects the predetermined axis, but the center line of the other does not intersect the predetermined axis, and so on.

[0067] In the various embodiments described above, compared with the embodiment in which the center line of the first flow channel and the center line of the second flow channel are perpendicular but do not intersect with the predetermined axis PP, in the embodiment in which the center line of the first flow channel and the center line of the second flow channel are perpendicular and intersect with the predetermined axis PP, the first flow channel and the second flow channel have a relatively long length, but this will make the distance between the first flow channel and the second flow channel and the outer side walls of the valve core on both sides of the flow channel larger, so that the valve core can have a higher mechanical strength, especially when the valve core is made by injection molding.

[0068] In addition, compared with the embodiment in which the center line of the first flow channel and the center line of the second flow channel are not parallel, the center line of the first flow channel and the center line of the second flow channel are parallel to each other, which can make the arrangement of the four water ports on the valve housing more regular, and thus more convenient for processing. Figures 4A-4C , the center line of the first flow channel 121 and the center line of the second flow channel 122 can be arranged in parallel and located on the same longitudinal plane where the predetermined axis PP is located. The flow channel arranged in this way has a simple manufacturing process, and the valve core 120 and the valve housing 110 are also relatively easy to design and produce, for example, they can be made by drawing the mold in one direction. Figure 6A-6B The illustrated embodiment is also similar.

[0069] For example, return reference Figure 4A As shown in the figure, the third flow channel 123 and the fourth flow channel 124 are grooves formed on the side surface of the valve core 120. Compared with installing a pipeline on the valve core 120, by constructing the grooves on the valve core 120, large-scale production can be achieved through processes such as injection molding, with a simple structure and low cost.

[0070] exist Figures 4A-4C In the first set of embodiments shown, and Figure 6A-6B In the third embodiment shown, the third and fourth orthographic projections of the third and fourth flow channels in the plane are connected end to end to form a circle with the center point as the origin. At this time, only the ends of the third and fourth orthographic projections overlap. Figure 5A-5B In the second group of embodiments shown, the third orthographic projection and the fourth orthographic projection do not overlap. The third flow channel and the fourth flow channel designed in this way are distributed on the outer surface of the valve core 120 and are relatively spaced apart from each other, so as not to interfere with each other, thereby reducing the difficulty of design and processing. Of course, the third orthographic projection and the fourth orthographic projection can also be designed to overlap more, for example, for the first group of embodiments, the third flow channel can be made to circle 1.5 times, etc.

[0071] Exemplarily, a line between two ends of the third orthographic projection and a line between two ends of the fourth orthographic projection are perpendicular to the first flow channel and the second flow channel. Figures 4A-4C In the first embodiment shown, when the valve core 120 rotates 90 degrees, the switch from the first position to the second position can be completed. In this way, the spacing between each flow channel can be fully increased, so that even if there is an error in the processing, the valve core 120 can have enough fault tolerance to ensure the function. In addition, such a design can not only thicken each flow channel to a certain extent, but also simplify the design and processing, and has a better cost performance. Figure 5A-5B The second group of embodiments shown also has the above-mentioned features.

[0072] For example, return to Figures 1 to 4A-4C, the valve core 120 has a first end and a second end opposite to each other along a predetermined axis, the first flow channel 121 and the second flow channel 122 are respectively located at the first end and the second end, and the third flow channel 123 and the fourth flow channel 124 are both extended from the first end to the second end. In this way, the space on the valve core can be fully utilized. Exemplarily, the first flow channel 121", the second flow channel 122", the third flow channel 123" and the fourth flow channel 124" are connected by aligning with the corresponding water ports respectively, thereby realizing the function of switching by rotating the valve core 120".

[0073] For example, Figure 7 As shown, the reversing valve assembly 100 also includes a driving member 130, the output end of the driving member 130 is connected to the valve core, and the valve core can move between the first position and the second position under the action of the driving member 130. The driving member 130 may include one or more of a stepping motor, a steering gear or a reduction motor. By setting the driving member 130, the reversing valve assembly 100 can be controlled by an electrical signal. The driving member 130 may also include a limiting mechanism to prevent excessive rotation from damaging the reversing valve assembly 100. Of course, the driving member 130 may not be provided, and the valve core may be switched between the first position and the second position manually.

[0074] According to another aspect of the present application, a pipeline machine 200 is provided. Figure 8 The pipeline machine 200 is provided with a first water inlet 201, a second water inlet 202 and a water intake 203. The pipeline machine 200 also includes any one of the above-mentioned reversing valve assemblies 100, a pumping device 210, a first pipeline 220, a second pipeline 230, a third pipeline 240 and a fourth pipeline 250. The water inlet of the pumping device 210 is connected to the third water inlet 113 of the reversing valve assembly 100, and the water outlet of the pumping device 210 is connected to the fourth water inlet 114 of the reversing valve assembly 100. Figure 8 As shown, illustratively, the water inlet of the first pipeline 220 is connected to the first water inlet 201, and the water outlet is connected to the first water inlet 111 of the reversing valve assembly 100, and the first pipeline 220 is provided with a first check valve 221. The first check valve 221 is conductive along the water flow direction. The water inlet of the second pipeline 230 is connected to the second water inlet 202, and the water outlet is connected to the second water inlet 112 of the reversing valve assembly 100, and the second pipeline 230 is provided with a second check valve 231. The second check valve 231 is conductive along the water flow direction. The water inlet of the third pipeline 240 is connected to the first water inlet 111, and the water outlet is connected to the water intake 203. The third pipeline 240 is provided with a third check valve 241. The third check valve 241 is conductive along the water flow direction. The water inlet of the fourth pipeline 250 is connected to the second water inlet 112, and the water outlet is connected to the water intake 203. The fourth pipeline 250 is provided with a fourth one-way valve 251. The fourth one-way valve 251 can be conducted along the water flow direction.

[0075] The pumping device 210 of the pipeline machine 200 can adopt a rotary vane pump or a diaphragm pump. These two pumps have the characteristics of large flow, long life and self-priming, and are particularly suitable for equipment such as the pipeline machine 200 that requires a large water flow. The water inlet of the pumping device 210 can pump water, and the water outlet of the pumping device 210 can pump water out. The reversing valve assembly 100 is set, and when the water source of the first pipeline 220 is used, the valve core 120 can be switched to the first position, so that the first water inlet 111 connected to the water source is connected to the third water inlet 113 connected to the water inlet of the pumping device 210. When the pumping device 210 is working, the water inlet of the pumping device 210 pumps water from the first water inlet 201 through the first one-way valve 221. Since the third one-way valve 241 is provided on the third pipeline 240, the third one-way valve 241 can be conducted along the direction from the first water port 111 to the water inlet 203, and the water flow will not be sucked back to the pumping device 210 through the third one-way valve 241. The water outlet of the pumping device 210 is connected to the fourth water port 114, and the fourth water port 114 is connected to the second water port 112. The water can flow to the water inlet 203 through the fourth one-way valve 251 on the fourth pipeline 250, and will not flow to the second water inlet 202 through the second one-way valve 231.

[0076] Similarly, when the water source of the second water inlet 202 is used, the valve core 120 is switched to the second position, so that the second water inlet 112 connected to the second water source is connected to the third water inlet 113 connected to the water inlet of the pumping device 210. When the pumping device 210 is working, the water inlet of the pumping device 210 pumps water from the second water inlet 202 through the second one-way valve 231. The fourth one-way valve 251 is provided on the fourth pipeline 250, and the fourth one-way valve 251 can be conducted in the direction from the second water inlet 112 to the water intake 203, and the water flow will not be sucked back to the pumping device 210 through the fourth one-way valve 251. The water outlet of the pumping device 210 is connected to the third water inlet 113, and the third water inlet 113 is connected to the second water inlet 112. Water can flow to the water intake 203 through the third one-way valve 241 provided on the third pipeline 240, and will not flow to the first water inlet 201 through the first one-way valve 221.

[0077] By providing the reversing valve assembly 100 and the one-way valve, the water source can be switched at low cost and simply. The simple water path is easy to produce, assemble and maintain, and is not prone to water leakage. The reversing valve assembly 100 is easy to control, which can simplify program design.

[0078] Exemplarily, the pipeline machine 200 further includes a water tank 270 arranged in series on the first pipeline 220. The first one-way valve 221 is arranged downstream of the water tank 270. The water tank 270 of the pipeline machine 200 can store clean water, and according to the user setting or the detection result, the clean water in the water tank 270 or other water sources can be selected and provided to the user through the reversing valve assembly 100. Exemplarily, the pipeline machine 200 can also include a heating assembly 260. The water inlet of the heating assembly 260 can be connected to the water outlet of the third pipeline 240 and the water outlet of the fourth pipeline 250. The water outlet of the heating assembly 260 can be connected to the water intake 203. The heating assembly 260 can heat the selected water, and the heating assembly 260 can include an instant heating assembly 260, which can provide heated water according to the built-in temperature of the pipeline machine 200 or the temperature set by the user, enriching the user experience.

[0079] For example, the first water inlet 201 is used to connect to a water purifier, and the second water inlet 202 is used to connect to bottled water. In this way, the pipeline machine 200 can be manually or automatically switched between the water purifier and bottled water, which is easy to operate and does not require an additional switching device. The pipeline machine 200 can make program adjustments according to the water source corresponding to the reversing valve assembly 100, and perform different treatments for different water sources.

[0080] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front", "back", "up", "down", "left", "right", "lateral", "vertical", "vertical", "horizontal", "top", "bottom", etc. are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside" and "outside" refer to the inside and outside relative to the contours of each component itself.

[0081] For ease of description, regional relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the regional positional relationship between one or more components or features shown in the figure and other components or features. It should be understood that regional relative terms include not only the orientation of the components as described in the figure, but also different orientations in use or operation. For example, if the components in the accompanying drawings are inverted as a whole, the components "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Therefore, the exemplary term "above" may include both "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this article is intended to include all of these situations.

[0082] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, parts, components and / or combinations thereof.

[0083] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0084] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the utility model is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of protection claimed by the utility model. The protection scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A reversing valve assembly, It is characterized in that include: a valve housing, the valve housing having a first water inlet, a second water inlet, a third water inlet and a fourth water inlet; and The valve core is movably arranged in the valve housing between a first station and a second station, and the valve core is provided with a first flow channel, a second flow channel, a third flow channel and a fourth flow channel which are not connected to each other, Wherein, when the valve core is in the first working position, the first flow channel is connected between the first water port and the third water port, and the second flow channel is connected between the second water port and the fourth water port; and When the valve core is in the second working position, the third flow channel is connected between the first water port and the fourth water port, and the fourth flow channel is connected between the second water port and the third water port.

2. The reversing valve assembly according to claim 1, It is characterized in that The valve core is rotatable around a predetermined axis.

3. The reversing valve assembly according to claim 2, It is characterized in that The first flow channel and the second flow channel penetrate the valve core in a direction perpendicular to the predetermined axis, and the third flow channel and the fourth flow channel extend spirally around the predetermined axis.

4. The reversing valve assembly according to claim 3, It is characterized in that A center line of the first flow channel and a center line of the second flow channel intersect the predetermined axis.

5. The reversing valve assembly according to claim 3, It is characterized in that A center line of the first flow channel is parallel to a center line of the second flow channel.

6. The reversing valve assembly according to claim 3, It is characterized in that The third flow channel and the fourth flow channel are grooves formed on a side surface of the valve core.

7. The reversing valve assembly according to claim 3, It is characterized in that The third flow channel and the fourth flow channel respectively have a third orthographic projection and a fourth orthographic projection in a plane perpendicular to the predetermined axis, and the third orthographic projection and the fourth orthographic projection do not overlap with each other or only the ends overlap with each other.

8. The reversing valve assembly according to claim 7, It is characterized in that A line between two ends of the third orthographic projection and a line between two ends of the fourth orthographic projection are perpendicular to the first flow channel and the second flow channel.

9. The reversing valve assembly according to claim 3, It is characterized in that The valve core has a first end and a second end opposite to each other along the predetermined axis. The first flow channel and the second flow channel are located at the first end and the second end respectively, The third flow channel and the fourth flow channel both extend from the first end to the second end.

10. The reversing valve assembly according to claim 1, It is characterized in that The first flow channel, the second flow channel, the third flow channel and the fourth flow channel are connected by being aligned with corresponding water ports respectively.

11. The reversing valve assembly according to claim 1, It is characterized in that The reversing valve assembly further comprises a driving member, an output end of which is connected to the valve core, and the valve core is movable between the first station and the second station under the action of the driving member.

12. A pipeline machine, It is characterized in that The pipeline machine has a first water inlet, a second water inlet and a water intake, and comprises: The reversing valve assembly according to any one of claims 1 to 11; A pumping device, wherein the water inlet of the pumping device is connected to the third water inlet of the reversing valve assembly, and the water outlet of the pumping device is connected to the fourth water inlet of the reversing valve assembly; a first pipeline, wherein a water inlet of the first pipeline is connected to the first water inlet and a water outlet is connected to the first water outlet of the reversing valve assembly, and a first one-way valve is arranged on the first pipeline; a second pipeline, wherein a water inlet of the second pipeline is connected to the second water inlet and a water outlet is connected to the second water outlet of the reversing valve assembly, and a second one-way valve is provided on the second pipeline; a third pipeline, wherein the water inlet of the third pipeline is connected to the first water inlet and the water outlet is connected to the water intake, and a third one-way valve is provided on the third pipeline; and A fourth pipeline, wherein the water inlet of the fourth pipeline is connected to the second water inlet and the water outlet is connected to the water intake, and a fourth one-way valve is arranged on the fourth pipeline.

13. The pipeline machine according to claim 12, It is characterized in that The pipeline machine also includes: A water tank connected in series to the first pipeline, the first one-way valve being arranged downstream of the water tank; and / or A heating component, wherein the water inlet of the heating component is connected to the water inlets of the third pipeline and the fourth pipeline, and the water outlet of the heating component is connected to the water intake.

14. The pipeline machine according to claim 12, It is characterized in that The first water inlet is used to connect to a water purifier, and the second water inlet is used to connect to bottled water.

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