Shower faucet with cold water discharge function and shower

Abstract

The application discloses a shower faucet with cold water discharging function and a shower, and the shower faucet comprises a valve body, a temperature regulating valve core and a cold water discharging mechanism which are arranged on the valve body. The valve body is provided with a water outlet cavity which is communicated with a mixed water outlet of the temperature regulating valve core. The valve body is also provided with a water passing cavity and a water discharging cavity which can discharge cold water. The cold water discharging mechanism comprises a switch component and a water stopping part. The water stopping part is sealingly and slidingly connected in the water passing cavity and separates the water passing cavity into a back pressure cavity and a positive pressure cavity which is communicated with the water outlet cavity. The back pressure cavity and the positive pressure cavity are communicated with each other through a damping hole which is arranged on the water stopping part. The back pressure cavity is provided with a pressure relief hole which is controlled to be opened or closed by the switch component. A communication port is arranged between the water discharging cavity and the positive pressure cavity and / or the water outlet cavity. The water stopping part controls the communication port to be opened or closed according to the water pressure change of the back pressure cavity. The application can not only manually control whether to discharge cold water, but also automatically reset after the cold water is discharged, so that the second manual operation is avoided.

Description

Technical Field

[0001] This invention relates to a faucet, and more particularly to a shower faucet and shower with a cold water drainage function. Background Technology

[0002] When showering, especially in winter, people need to drain the residual cold water from the pipes before showering, once warm water comes out. Traditional shower faucets do not have a cold water drain function. When cold water needs to be drained, the user has to manually turn on the drain and control the draining time, requiring the user to repeatedly test the water temperature, which is quite inconvenient. Therefore, existing technologies have developed many shower faucets with cold water drain functions, which can be divided into two categories: one uses electronic methods for cold water draining, which has the disadvantages of high cost and short lifespan; the other uses a mechanical structure to achieve cold water draining. For example, Chinese invention patent 201521135958.8 discloses a switching valve with a cold water draining function, including a valve body, a valve core disposed within the valve body, and a temperature sensing module. The valve body has a water inlet channel and a first water outlet channel and a second water outlet channel respectively connected to the water inlet channel; the valve body also has a cold water drain channel connected to the water inlet channel, a drain hole connecting the first water outlet channel and the cold water drain channel, and an air intake hole connecting the second water outlet channel and the cold water drain channel. The temperature sensing module is used to open and close the drain hole. During cooling, the valve core closes the first and second water outlet channels. Water enters the cooling channel from the inlet channel, and the water flow generates suction, drawing the residual cold water in the second water outlet channel into the cooling channel through the air intake. After passing through the drain hole, the water, along with the residual cold water in the first water outlet channel, is discharged from the outlet of the first water outlet channel. When the water temperature rises to a predetermined value, the temperature sensing module closes the drain hole, ending the cooling process. While this switching valve with cooling function can achieve the cooling function, it also has the following shortcomings: it is too difficult to drain the cold water from the second water outlet channel using the Venturi principle; after cooling is completed, the holes in the cooling channel are blocked, but the air intake is not blocked, and water may enter the second water outlet channel through the air intake, resulting in leakage. Summary of the Invention

[0003] This invention addresses the technical problems existing in the prior art by providing a shower faucet and shower with a cold water drainage function, which can automatically control the cold water drainage time and prevent water leakage.

[0004] The technical solution adopted by this invention to solve its technical problem is as follows: a shower faucet with a cold water drainage function, comprising a valve body and a temperature-regulating valve core and a cold water drainage mechanism installed in the valve body. The valve body is provided with a cold water inlet and a hot water inlet connected to the inlet of the temperature-regulating valve core, and a water outlet cavity connected to the mixed water outlet of the temperature-regulating valve core. The valve body is also provided with a water passage cavity and a drain cavity for draining cold water. The cold water drainage mechanism includes a switch component and a water stop component. The water stop component is slidably connected in a sealed manner in the water passage cavity and divides the water passage cavity into a back pressure cavity and a positive pressure cavity connected to the water outlet cavity. The back pressure cavity and the positive pressure cavity are interconnected through a damping hole provided on the water stop component. The back pressure cavity is provided with a pressure relief hole, which is controlled by the switch component to open or not. A connecting port is provided between the drain cavity and the positive pressure cavity and / or the water outlet cavity. The water stop component controls the opening or not of the connecting port according to the water pressure change in the back pressure cavity.

[0005] Furthermore, it also includes an adjusting component, which is mounted on the valve body and used to adjust the volume of the back pressure chamber to adjust the cooling duration of the cooling mechanism.

[0006] Furthermore, the adjusting component includes an adjusting rod, which is connected to the valve body via a sealed thread or a sealed sliding connection, with one end of the adjusting rod located inside the back pressure chamber and the other end of the adjusting rod having an operating element located entirely or partially outside the valve body.

[0007] Furthermore, the pressure relief hole is located on the water-stopping element and communicates with the drainage chamber; the switching component includes a sealing rod, which is slidably connected to the valve body and passes through the pressure relief hole and the drainage chamber. One end of the sealing rod is provided with a switching element that is wholly or partially located outside the valve body. The sealing rod and the water-stopping element are equipped with a first elastic element for resetting, and / or, the sealing rod or the switching element and the valve body are equipped with a second elastic element for resetting. The switching element can be pressed or pulled to cause the sealing rod to move in the opposite direction to its resetting direction and close the pressure relief hole.

[0008] Furthermore, the water-stopping component is provided with a first cavity connecting the back pressure cavity and the pressure relief hole. The first cavity is located between the back pressure cavity and the pressure relief hole. The other end of the sealing rod is located in the first cavity and is provided with a sealing part for sealing the pressure relief hole. The first elastic element is located in the first cavity and abuts against the other end of the sealing rod and the side of the first cavity opposite to the pressure relief hole. The switch can be pressed.

[0009] Furthermore, the valve body is provided with a second cavity located inside the switch element, the sealing rod passes through the second cavity, the second elastic element is fitted inside the second cavity and outside the sealing rod, and one end of the second elastic element abuts against the switch element, and the other end of the second elastic element is located on the side of the second cavity opposite to the switch element.

[0010] Furthermore, the switch element is fitted with a positioning structure in conjunction with the valve body, or it may also include a housing, the valve body being mounted on the housing, and the switch element being fitted with the housing with a positioning structure; the positioning structure is used to position the switch element in the position when it is operated, and includes a first positioning block disposed in the switch element and a second positioning block disposed in the valve body or housing, the position of the switch element when it is operated is such that the second positioning block engages or releases the first positioning block by rotating a preset angle.

[0011] Furthermore, it also includes a water outlet valve core, which is installed in the valve body and the water inlet of the water outlet valve core is connected to the drainage chamber. The water outlet valve core is a water distribution valve core or a switch valve core.

[0012] Furthermore, it also includes a temperature sensing rod and a temperature display module. The temperature sensing rod is installed in the valve body and is used to detect the water temperature in the drain chamber. The temperature sensing rod outputs the detected temperature signal to the temperature display module.

[0013] Furthermore, it also includes a third elastic element, which is located in the back pressure cavity and abuts against the water-stopping element and the side of the back pressure cavity opposite to the water-stopping element; the third elastic element is a spring, and its end that abuts against one side of the back pressure cavity is extended and bent to form an anti-blocking rod parallel to the movement direction of the water-stopping element, and the anti-blocking rod passes through the damping hole.

[0014] Furthermore, it also includes a housing, in which the valve body is installed, and the upper end of the housing forms a placement surface; the temperature regulating valve core is a thermostatic valve core.

[0015] The present invention also provides a shower, including a shower faucet with a cold water drainage function as described above.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Since the valve body also has a water passage chamber and a drain chamber for discharging cold water, the cooling mechanism includes a switch component and a water stop component. The water stop component is slidably connected in the water passage chamber and divides the water passage chamber into a back pressure chamber and a positive pressure chamber that connects to the outlet chamber. The back pressure chamber and the positive pressure chamber are interconnected through a damping hole provided on the water stop component. The back pressure chamber has a pressure relief hole, which is controlled by the switch component to open or close. A connection port is provided between the drain chamber and the positive pressure chamber and / or the outlet chamber. The water stop component controls the opening or closing of the connection port according to the water pressure change in the back pressure chamber. This allows the invention to not only manually control whether to discharge cold water, but also automatically reset after the cooling is discharged, avoiding a second manual operation. Furthermore, the overall structure of the invention is simple, highly practical, and will not have problems with leakage or difficulty in implementation.

[0018] 2. The present invention also includes an adjusting component, which is mounted on the valve body and used to adjust the volume of the back pressure chamber to adjust the cooling duration and drainage volume of the cooling mechanism, making the present invention applicable to water inlet pipes of different lengths, thereby improving the versatility of the present invention. In particular, the adjusting component includes the adjusting rod and the operating component, which has a simple structure and is easy to operate.

[0019] 3. The pressure relief hole is located on the water stop and is connected to the drainage chamber, so that when the back pressure chamber drains and relieves pressure, the water is directly discharged into the drainage chamber, thus eliminating the need to set up a separate pressure relief channel.

[0020] 4. The positioning structure allows the pressure relief hole to remain open when cooling is not required or when the user has special requirements. Especially when the valve body of this invention also includes a water distribution valve core, the switching component of this invention, through the positioning structure, can function as a water switch during showering, thus eliminating the need for an additional valve core, resulting in a more compact overall structure and lower cost.

[0021] 5. The temperature sensing rod and temperature display module allow users to easily know the water temperature at any time.

[0022] 6. The third elastic element is a spring, and its end that abuts against one side of the back pressure cavity is extended and bent to form an anti-blocking rod parallel to the movement direction of the water-stopping element. The anti-blocking rod passes through the damping hole, thereby playing a descaling role in the damping hole, preventing the damping hole from becoming blocked, and ensuring the long-term effectiveness of the function of the present invention.

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the shower faucet and shower with cold water drainage function of the present invention are not limited to the embodiments. Attached Figure Description

[0024] Figure 1 This is an exploded view of the shower faucet of the present invention;

[0025] Figure 2 This is an exploded view of the valve body assembly of the present invention (excluding switching components, etc.);

[0026] Figure 3 This is a three-dimensional structural schematic diagram of the valve body assembly of the present invention (excluding switching components, etc.);

[0027] Figure 4 This is a cross-sectional view of the valve body assembly of the present invention;

[0028] Figure 5 This is a cross-sectional view of the shower faucet of the present invention in the closed state of the pressure relief hole. Figure 1 ;

[0029] Figure 6This is a cross-sectional view of the shower faucet of the present invention in the closed state of the pressure relief hole. Figure 2 ;

[0030] Figure 7 yes Figure 6 An enlarged schematic diagram of part A in the middle;

[0031] Figure 8 This is a cross-sectional view of the shower faucet of the present invention with the pressure relief hole open;

[0032] Figure 9 yes Figure 8 Enlarged schematic diagram of part B;

[0033] Figure 10 This is a cross-sectional view of the shower faucet of the present invention under water pressure after the pressure relief hole is opened;

[0034] Figure 11 This is a cross-sectional view of the shower faucet of the present invention in the draining state;

[0035] Figure 12 This is a cross-sectional view of the shower faucet of the present invention in the position of the switch component when it is operated;

[0036] Figure 13 yes Figure 12 An enlarged schematic diagram of section C;

[0037] Figure 14 This is a three-dimensional structural diagram of the shower device of the present invention;

[0038] The components include: 1. Valve body; 11. Main valve body; 111. Cold water inlet; 112. Hot water inlet; 113. Outlet chamber; 114. Positive pressure chamber; 115. Back pressure chamber; 116. Drain chamber; 117. Connecting port; 118. Second chamber; 12. Diverter valve body; 13. Rear cover; 2. Thermostatic valve core; 21. Temperature adjustment knob; 3. Cooling mechanism; 31. Water stop component; 311. Water stop body; 312. Sealing ring; 313. Cover; 3111. Pressure relief hole; 3112. Damping hole; 3113. First chamber; 32. Sealing element. 321. Rod; 33. Sealing part; 33. Switch; 331. First positioning block; 34. First elastic element; 35. Second elastic element; 36. Third elastic element; 361. Anti-blocking rod; 4. Adjusting element; 41. Adjusting rod; 42. Operating element; 5. Water distribution valve core; 51. Switching knob; 6. Temperature sensing rod; 7. Digital display screen; 8. Housing; 81. Outer shell; 82. Shelf; 83. Front cover; 831. Second positioning block; 84. Cold water inlet connector; 85. Hot water inlet connector; 9. Battery box; 10. Handheld shower head; 20. Top spray. Detailed Implementation

[0039] In this invention, the terms "first," "second," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. The use of terms such as "upper," "lower," "left," "right," "front," and "rear" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention, not to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the scope of protection of this invention. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B, and A, and / or B can all represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0041] Please see Figures 1-13 As shown, a shower faucet with cold water discharge function according to the present invention includes a valve body 1 and a temperature regulating valve core and a cold water discharge mechanism 3 installed in the valve body 1. The valve body 1 is provided with a cold water inlet 111 and a hot water inlet 112 connected to the water inlet of the temperature regulating valve core, and a water outlet chamber 113 connected to the mixed water outlet of the temperature regulating valve core. The valve body 1 is further provided with a water passage chamber and a drain chamber 116 for discharging cold water. The cold water discharge mechanism 3 includes a switch component and a water stop component 31. The water stop component 31 is slidably connected in the water passage chamber and divides the water passage chamber into a back pressure chamber 115 and a positive pressure chamber 114 that connects to the outlet chamber 113. The back pressure chamber 115 and the positive pressure chamber 114 are interconnected through a damping hole 3112 provided on the water stop component 31. The back pressure chamber 115 is provided with a pressure relief hole 3111, which is controlled by the switch component to open or close. A connecting port 117 is provided between the drain chamber 116 and the positive pressure chamber 114 and / or the outlet chamber 113. The water stop component 31 controls the opening or closing of the connecting port 117 according to the water pressure change in the back pressure chamber 115. In this embodiment, the connecting port 117 is located between the drain chamber 116 and the positive pressure chamber 114 to allow the drain chamber 116 and the positive pressure chamber 114 to communicate with each other. The damping orifice 3112 refers to an orifice with a very small diameter, which allows water to flow slowly; it can also be called a fine orifice or a small hole. The valve body 1 and all the components installed on it can be collectively referred to as the valve body assembly.

[0042] In this embodiment, the invention further includes an adjusting component 4, which is mounted on the valve body 1 and used to adjust the volume of the back pressure chamber 115 to adjust the cooling duration of the cooling mechanism 3. Specifically, the adjusting component 4 includes an adjusting rod 41, which is threadedly connected to the valve body 1. One end of the adjusting rod 41 is located inside the back pressure chamber 115, and the other end of the adjusting rod 41 is provided with an operating component 42, which is wholly or partially located outside the valve body 1. The operating component 42 is specifically a circular structure and can therefore also be called a turntable, handwheel, etc. The operating component 42 is integrally formed or fixedly connected to the adjusting rod 41. In other embodiments, the adjusting rod 41 is slidably connected to the valve body 1, with one end of the adjusting rod 41 located inside the back pressure chamber 115, and the other end of the adjusting rod 41 provided with an operating component 42, which is wholly or partially located outside the valve body 1. Thus, by pushing or pulling the operating component 42, the adjusting rod 41 can be driven to move axially, thereby achieving the purpose of adjusting the volume of the back pressure chamber 115. The adjusting rod 41 is specifically disposed on the rear side wall of the valve body 1 in the front-back direction, and therefore, the operating member 42 is located on the rear side of the valve body 1.

[0043] In this embodiment, the pressure relief hole 3111 is located on the water-stopping member 31 and communicates with the drainage chamber 116. The switching component includes a sealing rod 32, which is slidably connected to the valve body 1 and passes through the pressure relief hole 3111 and the drainage chamber 116. One end of the sealing rod 32 is provided with a switching element 33 that is wholly or partially located outside the valve body 1. The sealing rod 32 and the water-stopping member 31 are fitted with a first elastic element 34 for resetting, and / or, the sealing rod 32 or the switching element 33 and the valve body 1 are fitted with a second elastic element 35 for resetting. The switching element 33 can be pressed to cause the sealing rod 32 to move in the opposite direction to its resetting direction to close the pressure relief hole 3111. In other embodiments, the switching element can be pulled. The sealing rod 32 is specifically located on the front side wall of the valve body 1 along the front-rear direction, with one end facing forward.

[0044] In this embodiment, the water-stopping component 31 is provided with a first cavity 3113 connecting the back pressure chamber 115 and the pressure relief hole 3111. The first cavity 3113 is located between the back pressure chamber 115 and the pressure relief hole 3111. The other end of the sealing rod 32 is located inside the first cavity 3113 and is provided with a sealing part 321 for sealing the pressure relief hole 3111. The first elastic member 34 is located inside the first cavity 3113 and abuts against the other end of the sealing rod 32 and the side of the first cavity 3113 opposite to the pressure relief hole 3111. The valve body 1 is provided with a second cavity 118 located inside the switch component 33. The sealing rod 32 passes through the second cavity 118. The second elastic member 35 is fitted inside the second cavity 118 and outside the sealing rod 32. One end of the second elastic member 35 abuts against the switch component 33, and the other end of the second elastic member 35 is located on the side of the second cavity opposite to the switch component 33. The first elastic element 34 and the second elastic element 35 are springs, but are not limited to this.

[0045] In this embodiment, the invention further includes a housing 8, in which the valve body 1 is mounted. The switch 33 is fitted with a positioning structure in conjunction with the housing 8. The positioning structure is used to position the switch 33 in an operated position (i.e., a pressed position). It includes a first positioning block 331 disposed on the side of the switch 33 and a second positioning block 831 disposed within the housing 8. When the switch 33 is operated, rotating it by a preset angle causes the second positioning block 831 to engage or release the first positioning block 331. In other embodiments, the switch 33 is fitted with the positioning structure in conjunction with the valve body, i.e., the second positioning block is disposed within the valve body.

[0046] In this embodiment, the invention further includes a water outlet valve core, which is installed in the valve body 1, and the water inlet of the water outlet valve core is connected to the drain chamber 116. Specifically, the water outlet valve core is a water distribution valve core 5, which has a water distribution function but not a water stop function. However, this is not a limitation; in other embodiments, the water outlet valve core is a switch valve core. The temperature regulating valve core is a thermostatic valve core 2, but this is not a limitation; in other embodiments, the temperature regulating valve core is a common valve core.

[0047] In this embodiment, the present invention further includes a temperature sensing rod 6 and a temperature display module. The temperature sensing rod 6 is mounted on the valve body 1 and is used to detect the water temperature in the drain chamber 116. The temperature sensing rod 6 outputs the detected temperature signal to the temperature display module, so that the temperature display module displays the water temperature of the drain chamber 116 in real time. The temperature display module is specifically a digital display screen 7, but is not limited thereto.

[0048] In this embodiment, the invention further includes a third elastic element 36, which is located within the back pressure cavity 115 and abuts against the water-stopping element 31 and the side of the back pressure cavity 115 opposite to the water-stopping element 31. The third elastic element 36 is a spring, and its end abutting against one side of the back pressure cavity 115 is extended and bent to form an anti-blocking rod 361 parallel to the movement direction of the water-stopping element 31. The anti-blocking rod 361 passes through the damping hole 3112. As the water-stopping element 31 moves, the anti-blocking rod 361 moves relative to the water-stopping element 31, thereby removing scale from the damping hole 3112. The third elastic element 36 is used to assist the water-stopping element 31 in resetting.

[0049] In this embodiment, the upper end of the housing 8 forms a shelf. Specifically, the housing 8 includes an outer shell 81 with an upper opening, a shelf 82, and a front cover 83. The shelf 82 is detachably connected to the upper opening of the outer shell 81. The rear sidewall of the outer shell 81 is equipped with a cold water inlet connector 84 and a hot water inlet connector 85. The cold water inlet connector 84 connects to the cold water inlet 111 of the valve body 1, and the hot water inlet connector 85 connects to the hot water inlet 112 of the valve body 1. The switching knob 51 of the water distribution valve core 5 is located on the left side of the outer shell 81, the temperature adjustment knob 21 of the thermostatic valve core 2 is located on the right side of the outer shell 81, the switch 33 is located on the front side of the outer shell 81, and the digital display screen 7 is mounted on the front sidewall of the outer shell 81. The front sidewall of the outer shell 81 is thinned or made transparent corresponding to the position of the digital display screen 7, so that the water temperature information displayed on the digital display screen 7 can be seen through. The invention also includes a battery box 9, which is housed within the outer casing 81. The battery box 9 is used to house a battery that powers the digital display screen 7 and the temperature sensor 6. The front cover 83 is threaded to the front end of the outer casing 81. At the position corresponding to the switch 33, the second positioning block 831 is located within the front cover 83. The switch 33 is located at the front cover 83, and the first positioning block 331 on the switch 33 is confined within the front cover 83 to prevent the switch 33 from detaching from the casing 8.

[0050] In this embodiment, the valve body 1 includes a main valve body 11, a water distribution valve body 12, and a rear cover 13. The main valve body 1 forms a cold water inlet 111, a hot water inlet 112, an outlet chamber 113, a portion of a drain chamber 116, and a second chamber 118, and is equipped with the thermostatic valve core 2 and a cooling mechanism 3. The rear cover 13 is threaded to the rear end of the main valve body 1, and the adjusting rod 41 is slidably and sealingly connected to the rear cover 13. The water distribution valve body 1 forms the remaining portion of the drain chamber 116 and is sealed to the main valve body 1. The water distribution valve core 5 is installed in the water distribution valve body 1. Figure 4As shown, the water-stopping component 31 includes a water-stopping body 311, a cover 313, and a sealing ring 312 fitted on the water-stopping body 311. The water-stopping body 311 is provided with the pressure relief hole 3111 and the damping hole 3112. The cover 313 is threaded to the rear end of the water-stopping body 311, and the two form the first cavity 3113. The sealing ring 312 is fitted on the outside of the water-stopping component body 311, and the longitudinal section of the sealing ring 312 is V-shaped.

[0051] This invention provides a shower faucet with a cold water drainage function. Its adjusting component 4 can be used to adjust the volume of the back pressure chamber 115, thereby adjusting the drainage volume and cold water drainage time. Therefore, this invention is applicable to water inlet pipes of different lengths, thus improving its versatility. When it is necessary to shorten the cold water drainage time, the operating component 42 is rotated, causing one end of the adjusting rod 41 to move into the back pressure chamber 115, thereby reducing the volume of the back pressure chamber 115. When it is necessary to extend the cold water drainage time, the operating component 42 is rotated in the opposite direction, causing the adjusting rod 41 to move in the opposite direction, thereby increasing the volume of the back pressure chamber 115. During the adjustment process, the water temperature change can be observed through the digital display screen 7 to determine whether the appropriate temperature has been reached after cold water drainage. Typically, the cold water drainage time and drainage volume need to be adjusted during the first installation and use. Once the drainage volume is adjusted, since the length of the water inlet pipe is fixed, the volume of cold water in the water inlet pipe that needs to be pre-drained will not change, so there is basically no need to adjust the operating component 42 again. Afterwards, when draining cold water, simply pressing the switch 33 will pre-drain the cold water, which is convenient and quick.

[0052] The present invention provides a shower faucet with a cold air exhaust function, the initial state of which is as follows: Figures 5-7 As shown, at this time, the sealing rod 32 closes the pressure relief hole 3111 under the action of the first elastic element 34 and the second elastic element 35, and the water-stopping element 31 closes the communication port 117 between the water outlet chamber 113 and the drainage chamber 116. When pre-cooling is required, the switch 33 is pressed, causing the switch 33 to drive the sealing rod 32 to move backward against the elastic force of the first elastic element 34 and the second elastic element 35, thereby opening the pressure relief hole 3111 on the water-stopping element 31. Water in the back pressure chamber 115 flows from the pressure relief hole 3111 to the drainage chamber 116 (e.g., Figure 8 , Figure 9 As shown), the water pressure in the back pressure chamber 115 is significantly reduced because the water pressure in the positive pressure chamber 114 is much greater than that in the back pressure chamber 115. Consequently, the water pressure in the positive pressure chamber 114 moves towards the back pressure chamber 115 under the pressure of the positive pressure chamber 114, thus opening the connecting port 117. This allows the cold water in the inlet pipe to flow sequentially through the outlet chamber 113, the positive pressure chamber 114, and the connecting port 117 to the drain chamber 116, and finally exit from one of the outlet terminals connected to the water distribution valve core 5. Figure 10 , Figure 11As shown. During the cooling process, water in the positive pressure chamber 114 is gradually replenished into the back pressure chamber 115 through the damping hole 3112 on the water-stopping member 31, causing the water pressure in the back pressure chamber 115 to gradually increase until it equals the water pressure in the positive pressure chamber 114. At this time, the water-stopping member 31 moves away from the back pressure chamber 115 under the push of the water pressure in the back pressure chamber 115 and the restoring force of the first elastic member 34, thereby closing the connecting port 117 and completing the cooling water drainage process. During this process, the sealing rod 32 and its switch member 33 also gradually reset under the restoring force of the second elastic member 35 and the third elastic member 36 until the pressure relief hole 3111 is closed. Therefore, when the user showers, they only need to press the switch member 33, and the invention can automatically complete the cooling process, and can automatically reset after cooling, without the user having to manually control the drainage time and drainage volume.

[0053] This invention provides a shower faucet with a cooling function, whose switch component can also function as a water switch during showering. Specifically, after cooling is complete, when the user needs to shower, the user simply presses the switch component 33 and rotates it a certain angle, causing the first positioning block 331 on the switch component 33 to be locked by the second positioning block 831 inside the front cover 83. This restricts the sealing rod 32 and the switch component 33 from automatically resetting under the action of the second elastic element 35 and the third elastic element 36, and keeps the sealing rod 32 in the open state of the pressure relief hole 3111, thereby keeping the water-stopping element 31 in the open state of the communication port 117. Figure 12 , Figure 13 As shown, warm water flows sequentially from the outlet chamber 113, the positive pressure chamber 114, and the connecting port 117 into the drain chamber 116, and finally exits from one of the outlet terminals connected to the water distribution valve core 5, thus realizing the shower spray function. When the user finishes showering, the switch 33 is rotated in the reverse direction, causing the first positioning block 331 on the switch 33 to be released by the second positioning block 831 inside the front cover 83. This causes the sealing rod 32 and the switch 33 to gradually reset, and the water-stopping component 31 to gradually close the connecting port 117, ultimately achieving the water-stopping function. Therefore, the shower faucet of the present invention does not require an additional switch valve core, making the overall structure more compact and the cost lower.

[0054] Please see Figures 1-14 As shown, a shower device of the present invention includes a shower faucet with cold water drainage function as described above, and multiple water outlet terminals. The multiple water outlet terminals specifically include a handheld shower head 10 and an overhead shower head 20. The handheld shower head 10 and the overhead shower head 20 are respectively connected to two water outlets of the water distribution valve core 5 so that the water outlet can be switched by the water distribution valve core 5.

[0055] The present invention relates to a shower faucet with a cold water drainage function. For the structure and working principle of the shower faucet, please refer to the previous description, which will not be repeated here.

[0056] The present invention provides a shower faucet and shower with a cold water drainage function. The parts not described herein are the same as or can be implemented using existing technology.

[0057] The above embodiments are only used to further illustrate a shower faucet and shower with cold water drainage function of the present invention. However, the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A shower faucet with a cold water discharge function, comprising a valve body and a temperature-regulating valve core and a cold water discharge mechanism mounted on the valve body, wherein the valve body is provided with a cold water inlet and a hot water inlet communicating with the inlet of the temperature-regulating valve core, and a water outlet chamber communicating with the mixed water outlet of the temperature-regulating valve core; characterized in that: The valve body is also provided with a water passage chamber and a drain chamber for discharging cold water. The cold water discharge mechanism includes a switch component and a water stop component. The water stop component is slidably connected in the water passage chamber and divides the water passage chamber into a back pressure chamber and a positive pressure chamber that connects to the water outlet chamber. The back pressure chamber and the positive pressure chamber are connected to each other through a damping hole provided on the water stop component. The back pressure chamber is provided with a pressure relief hole, which is controlled by the switch component to open or not. A connection port is provided between the drain chamber and the positive pressure chamber and / or the water outlet chamber. The water stop component controls whether the connection port is opened or not according to the water pressure change in the back pressure chamber.

2. The shower faucet with cold water drainage function according to claim 1, characterized in that: It also includes an adjusting component, which is mounted on the valve body and used to adjust the volume of the back pressure chamber in order to adjust the cooling duration of the cooling mechanism.

3. The shower faucet with cold water drainage function according to claim 2, characterized in that: The adjusting component includes an adjusting rod, which is connected to the valve body via a sealed threaded connection or a sealed sliding connection. One end of the adjusting rod is located inside the back pressure chamber, and the other end of the adjusting rod is provided with an operating element that is wholly or partially located outside the valve body.

4. The shower faucet with cold water drainage function according to claim 1, characterized in that: The pressure relief hole is located on the water-stopping element and communicates with the drainage chamber; the switching component includes a sealing rod, which is slidably connected to the valve body and passes through the pressure relief hole and the drainage chamber. One end of the sealing rod is provided with a switching element that is wholly or partially located outside the valve body. The sealing rod and the water-stopping element are equipped with a first elastic element for resetting, and / or, the sealing rod or the switching element and the valve body are equipped with a second elastic element for resetting. The switching element can be pressed or pulled to cause the sealing rod to move in the opposite direction to its resetting direction and close the pressure relief hole.

5. The shower faucet with cold water drainage function according to claim 4, characterized in that: The water-stopping component has a first cavity connecting the back pressure cavity and the pressure relief hole. The first cavity is located between the back pressure cavity and the pressure relief hole. The other end of the sealing rod is located in the first cavity and has a sealing part for sealing the pressure relief hole. The first elastic element is located in the first cavity and abuts against the other end of the sealing rod and the side of the first cavity opposite to the pressure relief hole. The switch can be pressed.

6. The shower faucet with cold water drainage function according to claim 4, characterized in that: The valve body has a second cavity located inside the switch element. The sealing rod passes through the second cavity. The second elastic element is fitted inside the second cavity and outside the sealing rod. One end of the second elastic element abuts against the switch element, and the other end of the second elastic element is located on the side of the second cavity opposite to the switch element.

7. The shower faucet with cold water drainage function according to claim 4, characterized in that: The switch element is fitted with a positioning structure in conjunction with the valve body, or it may further include a housing, the valve body being mounted on the housing, and the switch element being fitted with a positioning structure in conjunction with the housing; the positioning structure is used to position the switch element in the position when it is operated, and includes a first positioning block disposed in the switch element and a second positioning block disposed in the valve body or housing, the position of the switch element when it is operated is such that the second positioning block engages or releases the first positioning block by rotating a preset angle.

8. The shower faucet with cold water drainage function according to any one of claims 1-7, characterized in that: It also includes a water outlet valve core, which is installed in the valve body and the water inlet of the water outlet valve core is connected to the drainage chamber. The water outlet valve core is a water distribution valve core or a switch valve core.

9. The shower faucet with cold water drainage function according to claim 8, characterized in that: It also includes a temperature sensing rod and a temperature display module. The temperature sensing rod is installed in the valve body and is used to detect the water temperature in the drain chamber. The temperature sensing rod outputs the detected temperature signal to the temperature display module.

10. The shower faucet with cold water drainage function according to claim 1, characterized in that: It also includes a third elastic element, which is located in the back pressure cavity and abuts against the water-stopping element and the side of the back pressure cavity opposite to the water-stopping element; the third elastic element is a spring, and its end that abuts against one side of the back pressure cavity is extended and bent to form an anti-blocking rod parallel to the movement direction of the water-stopping element, and the anti-blocking rod passes through the damping hole.

11. The shower faucet with cold water drainage function according to claim 1, characterized in that: It also includes a housing, in which the valve body is installed, and the upper end of the housing forms a placement surface; the temperature regulating valve core is a thermostatic valve core.

12. A shower, characterized in that: Including a shower faucet with cold water drainage function as described in any one of claims 1-11.

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