Bathtub constant-temperature faucet

Abstract

The utility model provides a bathtub constant-temperature faucet which comprises a valve body, a central pipe, an inner pipe, a flow valve element, a constant-temperature valve element, a flow hand wheel, a constant-temperature hand wheel, a plug and a reversing assembly. The valve body comprises a transverse valve body and a longitudinal valve body; the transverse valve body comprises a cold water inlet connector, a hot water inlet connector and a fixed threaded connector, the longitudinal valve body comprises a first mixed water outlet connector and a second mixed water outlet connector, the plug abuts against the fixed groove through the fixed threaded connector to well position the center pipe, and a cold water channel is formed between the inner wall of the valve body and the center pipe. Cold water of the cold water channel enters the central pipe through the cold water passing hole, the cold water and hot water entering through the hot water passing hole are mixed in the central pipe, the mixed water channel enters the longitudinal valve body from the mixed water outlet hole, and in the longitudinal valve body, the reversing part and the reversing assembly are matched to control mixed water to be from the first mixed water outlet connector or the second mixed water outlet connector. The surface of the shower head is anti-scald, mixed water yield is increased, and diversified bath requirements can be met.

Description

Technical Field

[0001] This utility model relates to the field of plumbing equipment technology, specifically to a thermostatic bathtub faucet. Background Technology

[0002] A thermostatic faucet is a device that can automatically adjust the ratio of hot and cold water to maintain a constant water temperature, which can improve the comfort and safety of bathing.

[0003] Chinese utility model patent CN203926919U discloses a surface-anti-scalding thermostatic faucet, including a valve body, a central tube, and a connecting tube. A cold water channel and a mixing water channel are formed by a combined sleeve. Cold water flows around the outside of the central tube, while hot water enters directly into the central tube. The mixed water flows outward from the central tube. Because neither the hot water nor the mixed water comes into large contact with the valve body, a surface-anti-scalding function is achieved. However, the faucet's structure still needs improvement, particularly the insertion of the valve shaft into the mixing water outlet pipe, which limits the flow rate of the mixed water and is not conducive to meeting diverse bathing needs. Utility Model Content

[0004] The purpose of this invention is to provide a bathtub thermostatic faucet that increases water flow and better meets bathing needs.

[0005] To achieve the above objectives, this utility model provides a bathtub thermostatic faucet, comprising: a valve body, a central tube, an inner tube, a flow valve core, a thermostatic valve core, a flow handwheel, a thermostatic handwheel, a plug, and a reversing assembly; the valve body includes a horizontal valve body and a vertical valve body; the horizontal valve body includes a cold water inlet port, a hot water inlet port, and a fixed threaded port, the cold water inlet port and the hot water inlet port being respectively located at both ends in the axial direction of the horizontal valve body; the fixed threaded port is located between the cold water inlet port and the hot water inlet port; the vertical valve body includes a first mixing outlet port and a second mixing outlet port, the first mixing outlet port being located at one end in the axial direction of the vertical valve body, and the second mixing outlet port being located at... On the radial sidewall of the longitudinal valve body; a central tube is set inside the transverse valve body. The central tube includes a cold water passage, a hot water passage, and a fixing groove. A thermostatic valve core receiving cavity and a flow valve core receiving cavity are respectively set at both ends of the central tube in the axial direction. A cold water channel is formed between the outer surface of the central tube and the inner surface of the transverse valve body, communicating with the cold water inlet interface. The thermostatic valve core receiving cavity is connected to the cold water channel through the cold water passage and to the hot water inlet interface through the hot water passage. The upper half of the thermostatic valve core is threaded to the end of the transverse valve body, and the lower half of the thermostatic valve core is set inside the thermostatic valve core receiving cavity. A regulator is also set inside the thermostatic valve core receiving cavity. The regulator moves forward under the action of the thermostatic valve core. The rear displacement controls the opening ratio of the hot water and cold water inlets; the inner tube is installed inside the central tube, connecting the thermostatic valve core receiving cavity and the flow valve core receiving cavity. A mixing water channel is formed between the outer surface of the inner tube and the inner surface of the central tube, communicating with the flow valve core receiving cavity. This mixing water channel communicates with the longitudinal valve body through a mixing outlet on the central tube; the flow valve core is installed inside the flow valve core receiving cavity and connected to the flow handwheel; the fixing groove corresponds to the fixing thread interface, and the line connecting the center points of the fixing groove and the mixing outlet is perpendicular to the axial direction of the transverse shaft. The plug is fixed to the transverse valve body through the fixing thread interface and abuts against the fixing groove; the longitudinal valve body includes a reversing section, which includes a mixing inlet. The system includes a first water outlet control port, a second water outlet control port, a mixing inlet connected to a mixing outlet, a first water outlet control port, and a second water outlet control port. The first water outlet control port is connected to a first mixing outlet interface, and the second water outlet control port is connected to a second mixing outlet interface. A reversing assembly is installed in the reversing section. The reversing assembly includes a lifting handle, a lifting rod, a drum-shaped ring, a spring, and a lifting seat. The lifting seat is installed in the reversing section. The front end of the lifting rod is installed on the lifting seat and connected to the lifting handle. The drum-shaped ring is installed at the rear end of the lifting rod. The spring is sleeved on the lifting rod and abuts against the rear end of the lifting seat and the rear end of the lifting rod, respectively. The drum-shaped ring is controlled to block either the first water outlet control port or the second water outlet control port.

[0006] A further solution is to install an aerator at the first mixing outlet.

[0007] As can be seen from the above solution, this utility model sets a cold water channel between the inner wall of the transverse valve body and the central pipe. Cold water from the cold water channel enters the central pipe through the cold water passage, while hot water directly enters the central pipe through the hot water passage. After the cold and hot water mix in the central pipe, they enter the longitudinal valve body through the mixing outlet through the mixing water channel formed between the outer surface of the inner pipe and the inner surface of the central pipe. In the longitudinal valve body, the mixing water is controlled to flow from the first mixing outlet or the second mixing outlet by the switching part and the switching component. This utility model achieves a non-scalding surface while the valve body structure, including the transverse and longitudinal valve bodies, is easy for users to hold while bathing. At the same time, the setting of the switching component and the switching part enables the switching between bathtub water outlet and shower water outlet, further facilitating bathing in the bathtub. Since the hot water and the mixed water do not directly contact the inner wall of the transverse valve body, internal scaling is prevented, improving service life. In addition, the plug and the fixed threaded interface are then abutted against the fixed groove of the central pipe, achieving good fixation of the central pipe position without affecting the flow rate of the mixed water from the mixing outlet. The aerator is designed to soften the water flow and reduce splashing. Attached Figure Description

[0008] Figure 1 This is a partial cross-sectional view of an embodiment of the present utility model.

[0009] Figure 2 This is a partial sectional view of the valve body according to an embodiment of the present utility model.

[0010] Figure 3 This is a structural diagram of the central tube in an embodiment of the present invention.

[0011] Figure 4 This is a cross-sectional view of the central tube in an embodiment of this utility model.

[0012] Figure 5 This is a sectional view of the longitudinal valve body of an embodiment of the present utility model.

[0013] Figure 6 This is another partial cross-sectional view of an embodiment of the present utility model.

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0015] See Figure 1 This embodiment includes a valve body, a central tube 3, an inner tube 4, a flow valve core 5, a thermostatic valve core 6, a flow handwheel 7, a thermostatic handwheel 8, a plug 9, a reversing assembly, and an aerator 30. The valve body includes a transverse valve body 1 and a transverse valve body 2.

[0016] The transverse valve body 1 includes a cold water inlet port 11, a hot water inlet port 12, and a fixed threaded port 13. The cold water inlet port 11 and the hot water inlet port 12 are respectively located at both ends in the axial direction of the transverse valve body 1. The fixed threaded port 13 is located between the cold water inlet port 11 and the hot water inlet port 12.

[0017] The longitudinal valve body 2 includes a first mixing outlet 21, a second mixing outlet 22, and a reversing section 23. The first mixing outlet 21 is located at one end of the longitudinal valve body 2 in the axial direction, and the second mixing outlet 22 is located on the radial side wall of the longitudinal valve body 2. The reversing section 23 includes a mixing inlet 231, a first outlet passage control port 232, and a second outlet passage control port 233. The mixing inlet 231 is connected to the mixing outlet 33, the first outlet passage control port 232, and the second outlet passage control port 233, respectively. The first outlet passage control port 232 is connected to the first mixing outlet 21, and the second outlet passage control port 233 is connected to the second mixing outlet 22.

[0018] The central tube 3 is disposed within the transverse valve body 1. The central tube 3 includes a cold water passage 31, a hot water passage 32, a mixing outlet 33, and a fixing groove 34. A thermostatic valve core receiving cavity 100 and a flow valve core receiving cavity 200 are respectively provided at both ends of the central tube 3 in the axial direction. A cold water channel 901, communicating with the cold water inlet interface 11, is formed between the outer surface of the central tube 3 and the inner surface of the transverse valve body 1. The thermostatic valve core receiving cavity 100 is connected to the cold water channel 901 through the cold water passage 31. The thermostatic valve core receiving cavity 100 is connected to the hot water inlet interface 12 through the hot water passage 32.

[0019] The upper half of the thermostatic valve core 6 is threaded to the first end of the transverse valve body 14, and the lower half of the thermostatic valve core 6 is disposed in the thermostatic valve core receiving cavity 100. The thermostatic valve core receiving cavity 100 is also provided with a regulator 1001, which moves back and forth under the action of the thermostatic valve core 6 to control the opening ratio of the hot water passage 32 and the cold water passage 31.

[0020] The inner tube 4 is located inside the central tube 3. The inner tube 4 connects the thermostatic valve core receiving cavity 100 and the flow valve core receiving cavity 200. A mixing water channel 902, which communicates with the flow valve core receiving cavity 200, is formed between the outer surface of the inner tube 4 and the inner surface of the central tube 3. The mixing water channel 902 communicates with the longitudinal valve body 2 through the mixing outlet hole 33. The flow valve core 5 is located inside the flow valve core receiving cavity 200 and is connected to the flow handwheel 7.

[0021] The thermostatic valve core 6, thermostatic handwheel 8, and regulator 1001 work together to ensure the stable temperature of the mixed water, while the flow valve core 5 and flow handwheel 7 work together to adjust the flow rate of the mixed water. All of these can be achieved using existing technologies.

[0022] The position of the fixing groove 34 corresponds to the position of the fixing threaded interface 13, and the line connecting the center point of the fixing groove 34 and the center point of the mixing outlet hole 33 is perpendicular to the axial direction of the transverse shaft 1. The plug 9 is fixed to the transverse valve body 1 through the fixing threaded interface 13 and abuts against the groove 34. This ensures the stability of the position of the central tube 3.

[0023] A reversing assembly is installed in the reversing section 23. The reversing assembly includes a lifting handle 101, a lifting seat 102, a lifting rod 103, a drum-shaped ring 104, and a spring 105. The lifting seat 102 is installed in the reversing section 23. The front end of the lifting rod 103 is installed on the lifting seat 102 and connected to the lifting handle 101. The drum-shaped ring 104 is located at the rear end of the lifting rod 103. The spring 104 is sleeved on the lifting rod 103 and abuts against the lifting seat 102 and the rear end of the lifting rod 103, respectively. Under the action of the lifting handle 101 or the spring 105, the drum-shaped ring 104 is controlled to block the first water outlet control port 232 or the second water outlet control port 233. For example, by pulling the lifting handle 101 upwards, the lifting rod 103 moves the drum-shaped ring 104 upwards, thereby blocking the first water outlet control port 232. The mixed water enters the reversing part 23 from the mixing inlet 231 and flows out from the second water outlet control port 233. At this time, the spring 105 is compressed. After releasing the lifting handle 101, the spring 105 returns to its original position, moving the drum-shaped ring 104 downwards, thereby blocking the second water outlet control port 233. The mixed water enters the reversing part 23 from the mixing inlet 231 and flows out from the first water outlet control port 232.

[0024] In application, the cold water inlet 11 is connected to the cold water inlet pipe, and the hot water inlet 12 is connected to the hot water inlet pipe. Cold water enters the cold water channel 901 from the cold water inlet 11 and then enters the thermostatic valve core receiving cavity 100 through the cold water passage 31. Hot water enters the thermostatic valve core receiving cavity 100 from the hot water inlet 12 through the hot water passage 32. The preset outlet water temperature is set by adjusting the thermostatic handwheel 8. The regulator 1001 moves back and forth under the action of the thermostatic valve core 6 to control the opening ratio of the cold water passage 31 and the hot water passage 32 to ensure that the temperature of the mixed outlet water meets the preset temperature requirement. The mixed water in the thermostatic valve core receiving cavity 100 enters the flow valve core receiving cavity 200 through the inner surface of the inner tube. Under the action of the thermostatic valve core 6 and the flow handwheel 7, the flow rate of the mixed water is adjusted. The mixed water after the flow rate is adjusted enters the mixed water channel 902. The mixed water in the mixed water channel 902 enters the transverse valve body 1 through the mixed water outlet 33. In the transverse valve body 1, the mixed water enters the mixed water inlet 231. Then, under the action of the reversing component, it flows out from the first water outlet control port 232 to the first mixed water outlet port 21, or from the second water outlet control port 233 to the second mixed water outlet port 22.

[0025] In summary, this invention establishes a cold water channel between the inner wall of the valve body and the central pipe. Cold water from this channel enters the central pipe through a cold water passage, while hot water enters directly through a hot water passage. The cold and hot water mix within the central pipe and then flow through a mixing outlet into the longitudinal valve body via a mixing water channel formed between the outer surface of the inner pipe and the inner surface of the central pipe. Within the longitudinal valve body, a switching part and a switching assembly control the flow of the mixed water from either the first or second mixing outlet. This invention achieves a non-scalding surface while providing a convenient grip for bathing due to the valve body structure (both horizontal and vertical). The switching assembly and switching part allow for switching between bathtub and shower water outputs, further facilitating bathing in the bathtub. Internal hot and mixed water do not directly contact the valve body, preventing internal structural damage and extending service life. Furthermore, the plug and fixed threaded interface abut against the fixing groove in the central pipe, ensuring proper fixation of the central pipe while preventing the plug from restricting the flow rate of the mixed water from the mixing outlet.

[0026] Finally, it should be emphasized that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A thermostatic bathtub faucet, characterized in that, include: Valve body, central tube, inner tube, flow valve core, thermostatic valve core, flow handwheel, thermostatic handwheel, plug, reversing assembly; the valve body includes a transverse valve body and a longitudinal valve body; The transverse valve body includes a cold water inlet, a hot water inlet, and a fixed threaded interface. The cold water inlet and the hot water inlet are respectively located at both ends in the axial direction of the transverse valve body; the fixed threaded interface is located between the cold water inlet and the hot water inlet. The longitudinal valve body includes a first mixing outlet and a second mixing outlet. The first mixing outlet is located at one end of the longitudinal valve body in the axial direction, and the second mixing outlet is located on the radial sidewall of the longitudinal valve body. The central tube is disposed within the transverse valve body. The central tube includes a cold water passage, a hot water passage, and a fixing groove. A thermostatic valve core receiving cavity and a flow valve core receiving cavity are respectively provided at both ends of the central tube in the axial direction. A cold water channel is formed between the outer surface of the central tube and the inner surface of the transverse valve body, communicating with the cold water inlet. The thermostatic valve core receiving cavity communicates with the cold water channel through the cold water passage and with the hot water inlet through the hot water passage. The upper half of the thermostatic valve core is threadedly connected to the end of the transverse valve body, and the lower half of the thermostatic valve core is disposed within the thermostatic valve core receiving cavity. The thermostatic valve core receiving cavity is also provided with a regulator. The regulator moves back and forth under the action of the thermostatic valve core to control the opening ratio of the hot water passage and the cold water passage. The inner tube is disposed inside the central tube, and the inner tube connects the thermostatic valve core receiving cavity and the flow valve core receiving cavity. A mixing water channel is formed between the outer surface of the inner tube and the inner surface of the central tube, which communicates with the flow valve core receiving cavity. The mixing water channel communicates with the longitudinal valve body through a mixing outlet hole on the central tube. The flow valve core is disposed inside the flow valve core receiving cavity and is connected to the flow handwheel. The fixing groove corresponds to the fixing threaded interface, and the line connecting the center point of the fixing groove and the mixing outlet hole is perpendicular to the axial direction of the transverse shaft. The plug is fixed to the transverse valve body through the fixing threaded interface and abuts against the fixing groove. The longitudinal valve body includes a reversing section, which includes a mixing inlet, a first outlet control port, and a second outlet control port. The mixing inlet is connected to the mixing outlet, the first outlet control port, and the second outlet control port. The first outlet control port is connected to the first mixing outlet interface, and the second outlet control port is connected to the second mixing outlet interface. A reversing assembly is inserted into the reversing section. The reversing assembly includes a lifting handle, a lifting rod, a drum-shaped ring, a spring, and a lifting seat. The lifting seat is inserted into the reversing section. The front end of the lifting rod is inserted into the lifting seat and connected to the lifting handle. The drum-shaped ring is disposed at the rear end of the lifting rod. The spring is sleeved on the lifting rod and abuts against the lifting seat and the rear end of the lifting rod, respectively. The drum-shaped ring is controlled to block either the first outlet control port or the second outlet control port.

2. The bathtub thermostatic faucet as described in claim 1, characterized in that: An aerator is also provided at the first mixing outlet.

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