Water return device and water utilization system

Abstract

The utility model relates to a water return device and a water system. The water return device comprises a mounting pipe, a temperature control valve, a first connector, a first connection pipe and a second connection pipe. The mounting pipe is provided with a valve cavity. The temperature control valve is arranged in the valve cavity. The first connector is connected with one end of the installation pipe, forms an included angle with the installation pipe and communicates with the valve cavity. The first connection pipe is connected with the first connector. And the second connection pipe is connected with the other end of the mounting pipe. The valve cavity is arranged on the mounting pipe and communicated with the first connector, so that the arrangement position of the valve cavity is reasonable, and compared with a mode of directly arranging the valve cavity and the first connection pipe on a cold water pipe or a hot water pipe, the length sizes of the first connection pipe and the second connection pipe can be designed to be smaller; therefore, the device can be conveniently installed at a position with a small transverse space.

Description

Technical Field

[0001] This application relates to the field of water system technology, and in particular to a water return device and a water system. Background Technology

[0002] Currently, gas water heaters using the zero-cold-water function suffer from problems such as long preheating times, high gas consumption, hot water output from cold water pipes, and the need to start the water heater with cold water. Therefore, some manufacturers have designed a return water device that includes hot water pipes, cold water pipes, a thermostatic valve, an electric shut-off valve, a check valve, and a controller.

[0003] In related technologies, the installation scenario for water return devices is usually in the cabinet position under the bathroom sink. The water return device is generally H-shaped and includes cold water pipes and hot water pipes. The cold water pipes and hot water pipes are used to connect to the water circuit. Because the cold water pipes or hot water pipes have valve chambers formed on them for installing thermostatic valves, the length of the cold water pipes or hot water pipes is relatively long, resulting in a large horizontal space occupation. Therefore, they cannot be installed in positions with small horizontal installation space, such as the adjustment mechanism of the shower head or the faucet. Utility Model Content

[0004] The first technical problem addressed by this application is to provide a water return device that can effectively reduce the length of the pipe connection, making it easier to install in locations with limited lateral installation space.

[0005] The second technical problem addressed by this application is to provide a water system that can effectively reduce the length of the pipe connection, making it easier to install in locations with limited lateral installation space.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] A water return device for connection to the mixing valve of a shower head, the water return device comprising:

[0008] The mounting pipe is provided with a valve chamber;

[0009] A temperature control valve, wherein the temperature control valve is installed inside the valve cavity;

[0010] A first connector is connected to one end of the mounting tube and is set at an angle to it; the first connector is in communication with the valve cavity.

[0011] A first connecting pipe, which is connected to the first connector, is spaced apart from the valve chamber along the central axis of the first connector; and

[0012] The second connecting pipe is connected to the other end of the mounting pipe.

[0013] The water return device described in this application has the following advantages compared to the prior art:

[0014] The aforementioned water return device has an installation pipe with one end connected to the first connecting pipe via the first connector and the other end connected to the second connecting pipe. The valve chamber is located on the installation pipe and communicates with the first connector. This makes the valve chamber's location reasonable. The first and second connecting pipes are used to connect to the water circuit. The valve chamber is separated from the first connecting pipe. Compared to directly installing it on the cold or hot water pipe, the length of the first and second connecting pipes can be designed to be smaller, thus facilitating installation in locations with limited lateral space.

[0015] In one embodiment, the central axis of the first connector is perpendicular to the central axis of the mounting tube; the first connector is coaxially arranged with the valve cavity; the first connector and the mounting tube are an integral structure.

[0016] In one embodiment, the first connecting pipe includes a first tee pipe, the first tee pipe includes a first main pipe and a first branch pipe connected to the first main pipe, the first branch pipe is detachably connected to the first connector, and the first main pipe is used to connect to one of the hot water end and the cold water end of the mixing valve.

[0017] In one embodiment, the first connecting pipe further includes a first connecting pipe, which is rotatably inserted inside the first main pipe and communicates with the first branch pipe; one end of the first connecting pipe is designated as a first connecting end, which extends out of the first main pipe and is used to be inserted into the hot water pipe corresponding to the hot water end or the cold water pipe corresponding to the cold water end.

[0018] In one embodiment, the other end of the first connecting pipe is disposed inside the first main pipe, and the end of the first main pipe away from the first connecting end is provided with a second connecting end, which is used to connect to the hot water end or the cold water end; or, the other end of the first connecting pipe is provided as a third connecting end, which extends out of the first main pipe and is used to connect to the hot water end or the cold water end.

[0019] In one embodiment, the water return device further includes a second connector connected between the installation pipe and the second connecting pipe, the second connector being connected to the other end of the installation pipe and arranged at an angle, and the second connecting pipe being connected to the second connector.

[0020] In one embodiment, the second connecting pipe includes a second tee pipe, the second tee pipe includes a second main pipe and a second branch pipe connected to the second main pipe, the second branch pipe is detachably connected to the second connector, and the second main pipe is used to connect to one of the cold water end and the hot water end of the mixing valve.

[0021] In one embodiment, the water return device further includes a protective shell, and the mounting pipe, the temperature control valve, the first connector, the first connecting pipe and the second connecting pipe are all located inside the protective shell. The opposite ends of the first connecting pipe extend out of the protective shell, and the opposite ends of the second connecting pipe extend out of the protective shell.

[0022] In one embodiment, the protective shell includes two separate shells that are detachably joined together.

[0023] The second technical problem mentioned above is solved by the following technical solution:

[0024] A water supply system includes the aforementioned return water device, and further includes a water heater, a hot water pipe, a cold water pipe, a shower head, and a mixing valve. The inlet of the water heater is connected to the cold water pipe, and the outlet of the water heater is connected to the hot water pipe. The shower head is connected to the mixing valve. One of the first connecting pipe and the second connecting pipe is connected between the hot water end of the mixing valve and the hot water pipe, and the other is connected between the cold water end of the mixing valve and the cold water pipe.

[0025] The water system described in this application has the following advantages compared to the prior art:

[0026] In the aforementioned water system, one end of the installation pipe is connected to the first connecting pipe via the first connector, and the other end of the installation pipe is connected to the second connecting pipe. The valve chamber is located on the installation pipe and communicates with the first connector. Thus, the valve chamber is positioned reasonably. By separating the valve chamber from the first connecting pipe, compared to directly installing it on the cold water pipe or hot water pipe, the length of the first connecting pipe and the second connecting pipe can be designed to be smaller, which makes it easier to install in locations with limited lateral space. Attached Figure Description

[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a structural diagram of a water system according to an embodiment of this application.

[0030] Figure 2 This is a structural diagram of a water return device according to an embodiment of this application.

[0031] Figure 3 This is a structural diagram of the disassembled split shell in a water return device according to an embodiment of this application.

[0032] Figure 4 for Figure 3 The diagram shows the hidden structure of the split shell in the water return device.

[0033] Figure 5 for Figure 4 The diagram shows a cross-sectional view of the water return device.

[0034] Figure 6 This is a structural diagram of the water return device according to another embodiment of this application after the split shell is disassembled.

[0035] Figure 7 for Figure 6 The diagram shows the hidden structure of the split shell in the water return device.

[0036] Figure 8 for Figure 7 The diagram shows a cross-sectional view of the water return device.

[0037] Figure label:

[0038] 10. Return water device; 11. Installation pipe; 111. Valve chamber; 112. First connector; 113. Second connector; 114. Thermostatic valve; 12. First connecting pipe; 121. First tee pipe; 1211. First main pipe; 1212. First branch pipe; 1213. Second connecting end; 1214. First step; 1215. Third step; 122. First connecting pipe; 1221. First connecting end; 1222. Second step; 1223. Third connecting end; 1224. 12. Positioning boss; 12.25. Through hole; 13. Second connecting pipe; 13.1. Second tee pipe; 14.1. First snap ring; 14.2. Second snap ring; 15.1. First sealing ring; 15.2. Second sealing ring; 16. Limiting component; 17. Protective shell; 17.1. Split shell; 17.2. Connecting component; 18. Locking component; 19. One-way valve; 20. Shower head; 30. Mixing valve; 31. Hot water end; 32. Cold water end; 40. Water heater; 50. Hot water pipe; 60. Cold water pipe. Detailed Implementation

[0039] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0040] As described in the background section, the existing water return devices cannot be installed in locations with limited installation space. The inventors have discovered that this problem arises because the cold or hot water pipes of the water return valves in the relevant technologies have a shaped valve cavity for installing a temperature control valve. This results in a relatively long cold or hot water pipe, making it difficult to install the water return valve in locations with limited installation space, such as shower heads or faucets.

[0041] For the reasons mentioned above, this application provides a water return device and water use system that can effectively reduce the length of the pipe connection and facilitate installation in locations with limited horizontal installation space.

[0042] See Figures 1 to 3 , Figure 1 A structural diagram of a water system according to an embodiment of this application is shown. Figure 2 A structural diagram of a water return device 10 according to an embodiment of this application is shown. Figure 3This diagram shows the structure of the disassembled split housing 171 in a water return device 10 according to an embodiment of this application. An embodiment of this application provides a water return device 10 for connection to the mixing valve 30 of a shower head 20. The water return device 10 includes: an installation pipe 11, a thermostatic valve 114, a first connector 112, a first connecting pipe 12, and a second connecting pipe 13. The installation pipe 11 has a valve chamber 111. The thermostatic valve 114 is installed inside the valve chamber 111. The first connector 112 is connected to one end of the installation pipe 11 and is set at an angle, communicating with the valve chamber 111. The first connecting pipe 12 is connected to the first connector 112. The first connecting pipe 12 and the valve chamber 111 are spaced apart along the central axis of the first connector 112. The second connecting pipe 13 is connected to the other end of the installation pipe 11.

[0043] In this embodiment, one of the first connecting pipe 12 and the second connecting pipe 13 is connected to the hot water end 31 of the mixing valve 30, and the other is connected to the cold water end 32 of the mixing valve 30. Specifically, in this embodiment, the first connecting pipe 12 is connected to the hot water end 31 of the mixing valve 30, and the second connecting pipe 13 is connected to the cold water end 32 of the mixing valve 30. When the thermostatic valve 114 senses that the temperature of the hot water entering through the first connecting pipe 12 and the first connector 112 is too low, the thermostatic valve 114 is turned on, so the installation pipe 11 is turned on to connect the hot water end 31 and the cold water end 32 of the mixing valve 30, thus forming a loop, and the water heater 40 heats the cold water in the loop; when the thermostatic valve 114 senses that the hot water temperature reaches the preset temperature range, the thermostatic valve 114 is turned off, and the hot water end 31 and the cold water end 32 of the mixing valve 30 are not connected, so there is no need for heating by the water heater 40.

[0044] The aforementioned water return device 10 has an installation pipe 11 connected to the first connecting pipe 12 via a first connector 112 at one end and connected to the second connecting pipe 13 at the other end. The valve chamber 111 is located on the installation pipe 11 and communicates with the first connector 112. Thus, the valve chamber 111 is positioned reasonably. By separating the valve chamber 111 from the first connecting pipe 12, compared to directly installing it on the cold water pipe or hot water pipe, the length of the first connecting pipe 12 and the second connecting pipe 13 can be designed to be smaller, which makes it easier to install in locations with limited lateral space.

[0045] Specifically, the water return device 10 in this application can be installed at the mixing valve 30 of the shower head 20 to effectively preheat the cold water at the water point.

[0046] The length directions of the first connecting pipe 12 and the second connecting pipe 13 are as follows: Figure 2 The direction indicated by L in the diagram, i.e., the L direction, is taken as the lateral direction.

[0047] For example, the first connector 112 and the mounting tube 11 are an integral structure. Alternatively, the first connector 112 and the mounting tube 11 can be welded together, die-cast, or stamped as an integral structure, etc.

[0048] For example, the central axis of the first connector 112 is perpendicular to the central axis of the mounting tube 11, and the first connector 112 is coaxially arranged with the valve cavity 111. This facilitates the machining of the valve cavity 111.

[0049] Please see Figures 3 to 5 For example, the first connecting pipe 12 includes a first tee pipe 121. The first tee pipe 121 includes a first main pipe 1211 and a first branch pipe 1212 connected to the first main pipe 1211. The first branch pipe 1212 is detachably connected to the first connector 112, and the first main pipe 1211 is used to connect to either the hot water end 31 or the cold water end 32. Thus, by setting the first connecting pipe 12 in a tee structure, the first branch pipe 1212 can be connected to the first connector 112, and the first main pipe 1211 can be connected to either the hot water end 31 or the cold water end 32, which facilitates assembly and connection; at the same time, since the first main pipe 1211 does not have a valve chamber 111, the length of the first main pipe 1211 can be reduced, thereby reducing the overall size and facilitating installation on the mixing valve 30.

[0050] Optionally, one end of the first branch pipe 1212 is connected to the middle portion of the first main pipe 1211, and the other end of the first branch pipe 1212 is connected to the first connector 112. The first branch pipe 1212 is, but is not limited to, perpendicular to the first main pipe 1211, such that the first connector 112 is correspondingly perpendicular to the first main pipe 1211.

[0051] Optionally, there are many ways to detachably connect the first branch pipe 1212 and the first connector 112. For example, the first branch pipe 1212 and the first connector 112 can be snapped together by a snap ring. Alternatively, a flange face can be provided at the mating part of the first branch pipe 1212 and the first connector 112, and the connection and fixation can be made by fasteners such as pins, rivets or screws. Other connection and fixation methods can also be used. The specific method can be flexibly adjusted and set according to actual needs, and is not limited here.

[0052] Specifically, in this embodiment, the first branch pipe 1212 and the first connector 112 are connected and fixed by a first snap ring 141.

[0053] To ensure a tight seal, the return water device 10, for example, also includes a first sealing ring 151. The first sealing ring 151 is disposed between the first branch pipe 1212 and the first connector 112.

[0054] For example, the first connecting pipe 12 further includes a first connecting pipe 122, which is rotatably inserted inside the first main pipe 1211 and communicates with the first branch pipe 1212. One end of the first connecting pipe 122 is designated as a first connecting end 1221, which extends out of the first main pipe 1211 and is used to be inserted into the hot water pipe 50 corresponding to the hot water end 31 or the cold water pipe 60 corresponding to the cold water end 32. Thus, since the first connecting pipe 122 is rotatably disposed inside the first main pipe 1211 and communicates with the first branch pipe 1212, the installation operation can be achieved by rotating the first connecting pipe 122. This facilitates insertion into the hot water pipe 50 corresponding to the hot water end 31 to achieve communication between the hot water pipe 50 and the hot water end 31; or facilitates insertion into the cold water pipe 60 corresponding to the cold water end 32 to achieve communication between the cold water end 32 and the corresponding cold water pipe 60.

[0055] Optionally, the connection method between the first connecting end 1221 and the hot water pipe 50 or the cold water pipe 60 includes, but is not limited to, threaded connection or snap-fit ​​connection. In this embodiment, the outer wall of the first connecting end 1221 is provided with threads, and it can be detachably connected to the hot water pipe 50 or the cold water pipe 60 through threaded connection.

[0056] Please see Figures 3 to 5 Based on the aforementioned embodiments, the other end of the first connecting pipe 122 is disposed inside the first main pipe 1211, and the end of the first main pipe 1211 away from the first connecting end 1221 is provided with a second connecting end 1213, which is used to connect to the hot water end 31 or the cold water end 32.

[0057] To prevent the first connecting pipe 122 from axially disengaging from the first main pipe 1211, the return water device 10, for example, also includes a second retaining ring 142. The first connecting pipe 122 is connected to the first main pipe 1211 via the second retaining ring 142.

[0058] For example, the inner wall of the first main pipe 1211 is provided with a first step 1214, and the first connecting end 1221 protrudes from the outer wall of the first connecting pipe 122, forming a second step 1222. The other end of the first connecting pipe 122 extends into the interior of the first main pipe 1211 and abuts against the first step 1214 axially, while the second step 1222 abuts against the end of the first main pipe 1211 axially. Thus, under the action of the first step 1214 and the second step 1222, the first connecting pipe 122 can be prevented from moving axially, resulting in high rotational stability inside the first main pipe 1211.

[0059] To ensure a tight seal between the first connecting pipe 122 and the first main pipe 1211, the return water device 10, for example, further includes a second sealing ring 152. The second sealing ring 152 is disposed between the first connecting pipe 122 and the first main pipe 1211. The number of second sealing rings 152 includes, but is not limited to, one, two, three or more.

[0060] Please see Figures 6 to 8 For example, unlike the structure in the above embodiments where the second connecting end 1213 is located inside the first main pipe 1211, it is not necessary to provide the second connecting end 1213 on the first main pipe 1211. Optionally, the other end of the first connecting pipe 122 is provided as a third connecting end 1223, which extends out of the first main pipe 1211 and is used to connect to the hot water end 31 or the cold water end 32.

[0061] In order to enable the first connecting pipe 122 to communicate with the first branch pipe 1212, the first connecting pipe 122 is provided with a through hole 1225, through which the first connecting pipe 122 communicates with the first branch pipe 1212.

[0062] Please see Figures 6 to 8 Based on the aforementioned embodiments, to prevent the first connecting pipe 122 from axially detaching from the first main pipe 1211, for example, a positioning boss 1224 is formed on the outer wall of the first connecting pipe 122, and a third step 1215 is provided on the inner wall of the first main pipe 1211. The positioning boss 1224 and the third step 1215 abut against each other in the axial direction. Furthermore, the water return device 10 also includes a limiting member 16 detachably disposed on the first connecting pipe 122. The limiting member 16 is axially limited to the first main pipe 1211. The limiting member 16 includes, but is not limited to, a nut.

[0063] For example, the water return device 10 also includes a second connector 113 connected between the installation pipe 11 and the second connecting pipe 13. The second connector 113 is connected to the other end of the installation pipe 11 and is set at an angle, and the second connecting pipe 13 is connected to the second connector 113. Thus, since both the first connector 112 and the second connector 113 are provided, they are symmetrically arranged about the center position of the installation pipe 11, and the distances between the opposite ends of the installation pipe 11 and the first connecting pipe 12 and the second connecting pipe 13 are consistent or substantially the same.

[0064] For example, the second connector 113 and the mounting tube 11 are an integral structure. Alternatively, the second connector 113 and the mounting tube 11 can be welded together, die-cast, or stamped as an integral structure, etc.

[0065] For example, the central axis of the second connector 113 is perpendicular to the central axis of the mounting tube 11.

[0066] For example, the second connecting pipe 13 includes a second tee pipe 131, which includes a second main pipe and a second branch pipe connected to the second main pipe. The second branch pipe is detachably connected to a second connector 113. The second main pipe is used to connect to one of the cold water end 32 and the hot water end 31. Thus, by setting the second connecting pipe 13 in a tee structure, it can be connected to the second connector 113 via the second branch pipe, facilitating assembly and connection. Simultaneously, the length of the second main pipe can be reduced, thereby reducing the overall size and facilitating installation on the mixing valve 30. Both the first connecting pipe 12 and the second connecting pipe 13 are detachably connected to the mounting pipe 11, allowing for the replacement of different lengths of the first connecting pipe 12 and the second connecting pipe 13 to adapt to different installation spaces and improve practicality.

[0067] It should be noted that in some embodiments, the specific structural form of the second connecting pipe 13 is similar to that of the first connecting pipe 12. That is, the shape and size of the second connecting pipe 13 can be adaptively designed with reference to the shape and size of the first connecting pipe 12. For example, the second connecting pipe 13 also includes a second connecting pipe rotatably disposed inside the second tee pipe 131. The arrangement of the second connecting pipe inside the second connecting pipe 13 is similar to the arrangement of the first connecting pipe 122 inside the first connecting pipe 12, and will not be described in detail in this embodiment.

[0068] Please see Figure 3 or Figure 6 For example, the water return device 10 also includes a protective shell 17. The mounting pipe 11, thermostatic valve 114, first connector 112, first connecting pipe 12, and second connecting pipe 13 are all located inside the protective shell 17. The opposite ends of the first connecting pipe 12 and the opposite ends of the second connecting pipe 13 extend out of the protective shell 17. Thus, the protective shell 17 can protect the mounting pipe 11, thermostatic valve 114, first connector 112, first connecting pipe 12, and second connecting pipe 13 located inside it, preventing damage and providing good waterproof performance. At the same time, it prevents the mounting pipe 11, thermostatic valve 114, first connector 112, first connecting pipe 12, and second connecting pipe 13 from being exposed, making it more aesthetically pleasing.

[0069] For example, the protective shell 17 includes two separate shells 171, which are detachably joined together. This facilitates the assembly and disassembly of the protective shell 17; furthermore, after the protective shell 17 is removed, its internal components can be maintained.

[0070] Optionally, the protective shell 17 can be two separate shells 171 that are split in the vertical direction and detachably connected to each other, such as... Figure 3 As shown; it can also be two separate shells 171 that are split in the front-to-back direction and detachably connected to each other, such as Figure 6As shown; it can also be other forms of split structure that can be disassembled and detachably connected.

[0071] Optionally, the protective shell 17 also includes a connector 172. The two separate shells 171 are connected and fixed by the connector 172. The connector 172 includes, but is not limited to, screws, pins, and rivets, and the number of connectors 172 is not limited to one, two, three, or more, and is not limited here.

[0072] Optionally, the return water device 10 also includes a locking element 18. The mounting pipe 11 is connected and fixed to the protective shell 17 via the locking element 18. The locking element 18 includes, but is not limited to, screws, pins, and rivets, and the number of locking elements 18 includes, but is not limited to, one, two, three, or more, which is not limited here.

[0073] In one embodiment, the return water device 10 further includes a one-way valve 19. The one-way valve 19 is disposed on the mounting pipe 11. Under the action of the one-way valve 19, hot water can only flow from one end of the mounting pipe 11 to the other end, preventing cold water inside the cold water pipe 60 from flowing back into the hot water pipe 50.

[0074] Please see Figures 1 to 3 On the other hand, this application provides a water system including the return water device 10 of any of the above embodiments, and further including a water heater 40, a hot water pipe 50, a cold water pipe 60, a shower head 20, and a mixing valve 30. The inlet of the water heater 40 is connected to the cold water pipe 60, and the outlet of the water heater 40 is connected to the hot water pipe 50. The shower head 20 is connected to the mixing valve 30. One of the first connecting pipe 12 and the second connecting pipe 13 is connected between the hot water end 31 and the hot water pipe 50, and the other is connected between the cold water end 32 and the cold water pipe 60.

[0075] In the aforementioned water system, one end of the installation pipe 11 is connected to the first connecting pipe 12 via the first connector 112, and the other end of the installation pipe 11 is connected to the second connecting pipe 13. The valve chamber 111 is located on the installation pipe 11 and communicates with the first connector 112. Thus, the valve chamber 111 is positioned reasonably. By separating the valve chamber 111 from the first connecting pipe 12, compared to directly installing it on the cold water pipe or hot water pipe, the length of the first connecting pipe 12 and the second connecting pipe 13 can be designed to be smaller, which makes it easier to install in locations with limited lateral space.

[0076] Please see Figure 1 For example, the shower head 20 is not limited to one, but can also be multiple. Each shower head 20 is connected in parallel between the hot water pipe 50 and the cold water pipe 60. The return water device 10 is set as one and is installed on the mixing valve 30 corresponding to the shower head 20 furthest away from the water heater 40.

[0077] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0078] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0079] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0080] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0081] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0082] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A water return device, characterized in that, The water return device (10) includes: Mounting pipe (11), wherein the mounting pipe (11) is provided with valve chamber (111); A temperature control valve (114) is installed in the valve chamber (111); The first connector (112) is connected to one end of the mounting tube (11) and is set at an angle. The first connector (112) is in communication with the valve chamber (111). A first connecting pipe (12) is connected to the first connector (112), and the first connecting pipe (12) and the valve chamber (111) are spaced apart along the central axis of the first connector (112); and The second connecting pipe (13) is connected to the other end of the mounting pipe (11).

2. The water return device according to claim 1, characterized in that, The central axis of the first connector (112) is perpendicular to the central axis of the mounting tube (11); the first connector (112) is coaxially arranged with the valve chamber (111); the first connector (112) and the mounting tube (11) are an integrated structure.

3. The water return device according to claim 1, characterized in that, The first connecting pipe (12) includes a first tee pipe (121), the first tee pipe (121) includes a first main pipe (1211) and a first branch pipe (1212) connected to the first main pipe (1211). The first branch pipe (1212) is detachably connected to the first connector (112). The first main pipe (1211) is used to connect to one of the hot water end (31) and the cold water end (32) of the mixing valve (30).

4. The water return device according to claim 3, characterized in that, The first connecting pipe (12) further includes a first connecting pipe (122), which is rotatably inserted inside the first main pipe (1211) and communicates with the first branch pipe (1212). One end of the first connecting pipe (122) is designated as a first connecting end (1221), which extends out of the first main pipe (1211) and is used to be inserted into the hot water pipe (50) corresponding to the hot water end (31) or the cold water pipe (60) corresponding to the cold water end (32).

5. The water return device according to claim 4, characterized in that, The other end of the first connecting pipe (122) is located inside the first main pipe (1211). The end of the first main pipe (1211) away from the first connecting end (1221) is provided with a second connecting end (1213). The second connecting end (1213) is used to connect with the hot water end (31) or the cold water end (32). Alternatively, the other end of the first connecting pipe (122) is provided as a third connecting end (1223). The third connecting end (1223) extends out of the first main pipe (1211). The third connecting end (1223) is used to connect with the hot water end (31) or the cold water end (32).

6. The water return device according to claim 1, characterized in that, The water return device (10) further includes a second connector (113) connected between the installation pipe (11) and the second connecting pipe (13). The second connector (113) is connected to the other end of the installation pipe (11) and is set at an angle. The second connecting pipe (13) is connected to the second connector (113).

7. The water return device according to claim 6, characterized in that, The second connecting pipe (13) includes a second tee pipe (131), which includes a second main pipe and a second branch pipe connected to the second main pipe. The second branch pipe is detachably connected to the second connector (113). The second main pipe is used to connect to one of the cold water end (32) and hot water end (31) of the mixing valve (30).

8. The water return device according to claim 1, characterized in that, The water return device (10) also includes a protective shell (17). The mounting pipe (11), the temperature control valve (114), the first connector (112), the first connecting pipe (12) and the second connecting pipe (13) are all located inside the protective shell (17). The opposite ends of the first connecting pipe (12) extend out of the protective shell (17), and the opposite ends of the second connecting pipe (13) extend out of the protective shell (17).

9. The water return device according to claim 8, characterized in that, The protective shell (17) includes two separate shells (171), which are detachably spliced ​​together.

10. A water supply system, characterized in that, The device includes a return water device (10) as described in any one of claims 1 to 9, and further includes a water heater (40), a hot water pipe (50), a cold water pipe (60), a shower head (20), and a mixing valve (30). The inlet of the water heater (40) is connected to the cold water pipe (60), and the outlet of the water heater (40) is connected to the hot water pipe (50). The shower head (20) is connected to the mixing valve (30). One of the first connecting pipe (12) and the second connecting pipe (13) is connected between the hot water end (31) of the mixing valve (30) and the hot water pipe (50), and the other is connected between the cold water end (32) of the mixing valve (30) and the cold water pipe (60).

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