A mixing valve for a shower

Abstract

The present invention discloses a mixing valve for shower, which includes a cold water switch (1) and a hot water switch (2) connected together through a water mixer (6). The water outlet pipe (3) is vertically installed above the water mixer (6) and is internally connected to the water mixer (6). The water mixer (6) is a rectangular parallelepiped container made of metal. The cold water inlet (62) is located on the upper side surface of the housing (61). A first elastic sheet (63) is installed inside the cold water inlet (62). A first water passing hole (66) is formed between the first elastic sheet (63) and the front side surface of the housing (61). The hot water inlet (64) is located on the lower side surface of the housing (61). A second elastic sheet (65) is installed inside the hot water inlet (64). A second water passing hole (67) is formed between the second elastic sheet (65) and the rear side surface of the housing (61). After the cold water and the hot water are mixed inside the water mixer (6), they will enter the shower device through the water outlet pipe (3) for people to take a bath.

Description

Technical Field

[0001] The present invention relates to a plumbing fixture, and more particularly to a mixing valve for shower use. Background Art

[0002] There are many different types of mixing valves for shower use. In some households and public bathrooms, a large portion of the shower mixing valves use two independent water switches, such as Figure 1 、 Figure 2 shown. The cold water pipe and the hot water pipe are respectively provided with an independent water switch. During use, the water output of a certain switch can be adjusted separately. For example, first adjust the cold water switch to output a certain amount of cold water, fix the opening degree of the cold water switch, and then adjust the opening degree of the hot water switch to send out a certain amount of hot water. The cold water and hot water meet at the mixing pipe and spray out from the shower device. After repeatedly adjusting the opening degrees of the cold water switch and the hot water switch, the appropriate water temperature and water flow rate for people to take a bath are finally obtained at the mixing pipe for people to take a bath. However, such a mixing valve has a great defect, that is, during the bathing process, the water temperature is often affected by other factors and fluctuates, and the temperature and water flow rate of the mixed water fluctuate greatly, which has a great impact on the comfort of bathing, and it is very difficult to adjust the appropriate water temperature and water flow rate for bathing. Summary of the Invention

[0003] During the bathing process, the water temperature and water flow rate are affected by other factors and fluctuate. The reasons are as Figure 3 shown. In the Figure 3 shown tee pipe, cold water and hot water respectively flow into the vertical pipe from both sides of the horizontal pipe. When the pressures of the cold water and hot water in the water pipe are in balance, the cold water and hot water flow into the vertical pipe and mix, and the temperature of the mixed water remains unchanged. However, in fact, the cold water and hot water for bathing are not an isolated system in the pipeline. There are many other water-using devices in this pipeline, such as kitchen water use, washing machine water use, etc., which will all affect the flow rates of the cold water and hot water flowing into the vertical pipe. For example, during the bathing process, if the kitchen needs to use water, it will immediately cause the water pressure in this section of the water pipe to decrease, and then the water flow rates flowing into the cold water switch and the hot water switch will decrease accordingly. However, the resistances of the cold water and hot water in the pipeline are different, and the water flow rate in the pipeline with a larger resistance will decrease more, causing the water temperature flowing into the mixing valve to fluctuate.

[0004] In the existing mixing valves for shower use, the cold water and hot water are as Figure 3As shown in the figure, cold water and hot water flow into the mixing pipe relatively in the same water pipe. Even if the cold water and hot water flowing into the mixing pipe are reduced proportionally, due to the instantaneous fluctuation of the pressure in the water pipe, the cold water or hot water is easily pushed back due to the inertia of the water flow. Especially in summer, the use of hot water for bathing is very little. When the hot water flowing into the water heater is further reduced, the cold water will instantaneously push the hot water back, often causing the water heater to cut off the fire due to too little water flow, resulting in an instantaneous decrease in water temperature. The sudden cold and heat are harmful to health. At the same time, when cold water and hot water flow into the mixing pipe relatively in the same water pipe, it is also difficult to adjust the appropriate bathing water. That is, if the hot water flow is slightly larger, it will push the cold water back, and if the cold water flow is slightly larger, it will push the hot water back. It is very difficult to adjust the appropriate water temperature and water flow. It is necessary to repeatedly adjust the water flow of the cold water switch and the hot water switch for a long time. It is time-consuming and laborious. The water flowing out during the adjustment process flows into the underground pipeline, which causes a large amount of water resource waste. Sometimes, the hot water flowing out accidentally is too hot and will also cause harm to the human body.

[0005] The object of the present invention is to overcome the deficiencies of the shower water switch in the background technology and provide a new type of mixing valve for shower. When people take a bath, this water valve reduces the influence of other water supply devices in the same system, keeps the water temperature change gentle, and facilitates people to easily adjust the water temperature and water flow suitable for bathing.

[0006] The object of the present invention is achieved by the following technical solutions:

[0007] A mixing valve for shower of the present invention includes a cold water switch 1, a hot water switch 2, a water outlet pipe 3, a water outlet hole 5, and a mixer 6.

[0008] The cold water switch 1 and the hot water switch 2 are the same as those in the prior art, and both are provided with water outlet holes 5. The cold water switch 1 and the hot water switch 2 are connected together through a mixer 6;

[0009] The water outlet pipe 3 is vertically installed above the mixer 6 and is communicated with the inside of the mixer 6. The water flow inside the mixer 6 flows into the shower device through the water outlet pipe 3.

[0010] The mixer 6 is a cuboid container made of metal. The cold water inlet 62 is located on the upper side surface of the housing 61. A first elastic sheet 63 is installed inside the cold water inlet 62. A first water passing hole 66 is formed between the first elastic sheet 63 and the front side surface of the housing 61; the hot water inlet 64 is located on the lower side surface of the housing 61. A second elastic sheet 65 is installed inside the hot water inlet 64. A second water passing hole 67 is formed between the second elastic sheet 65 and the rear side surface of the housing 61, and the area of the first water passing hole 66 is smaller than the area of the second water passing hole 67.

[0011] The water outlet hole 5 on the cold water switch 1 is communicated with the cold water inlet 62, and the water outlet hole 5 on the hot water switch 2 is communicated with the hot water inlet 64.

[0012] Furthermore, the upper surface of the housing 61 of the mixer 6 is provided with a mounting hole 68, and is connected to the water outlet pipe 3 through the mounting hole 68.

[0013] Furthermore, both the first elastic piece 63 and the second elastic piece 65 are elastic metal thin sheets, one end is fixed on the inner side surface of the mixer housing 61, and the other end is a free end, and there is a gap between its upper and lower edges and the upper and lower surfaces of the housing 61.

[0014] Furthermore, when the first elastic piece 63 and the second elastic piece 65 are impacted by water flow, they can both produce small swings.

[0015] Compared with the prior art, the beneficial effects of the present invention are: completely overcoming the deficiencies of the prior art in the mixing valve for shower use. When the mixing valve is working, cold water and hot water enter the mixer 6 from the cold water inlet 62 and the hot water inlet 64 respectively. The cold water bypasses the first elastic piece 63 and passes through the first water passing hole 66 to reach the connection point of the water outlet pipe 3 inside the mixer 6, and the hot water bypasses the second elastic piece 65 and passes through the second water passing hole 67 to reach the connection point of the water outlet pipe 3 inside the mixer 6. Since the cold water and the hot water do not flow relatively into the water outlet pipe 3 along the same pipeline, there is more water at an appropriate temperature in the mixer 6, and the space in the mixer 6 is relatively large. Therefore, the cold water and the hot water can be fully mixed in the mixer 6 and then flow into the water outlet pipe 3 for people to take a bath. The phenomenon of "when the hot water flow is slightly larger, it will push the cold water back, and when the cold water flow is slightly larger, it will push the hot water back" will not occur. When the flow rate of the cold water or hot water flowing into the mixer 6 suddenly changes greatly, the first elastic piece 63 and the second elastic piece 65 can be deformed, playing a role of damping and buffering the water flow, greatly reducing the influence on the temperature and flow rate of the bathing water instantaneously generated by other water using devices, and also facilitating adjusting the water flow rate and water temperature suitable for bathing during bathing, saving time and effort, being convenient and fast, safe and reliable, and saving a large amount of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the connection relationship of two independent shower water switches.

[0017] Figure 2 It is a schematic diagram of the structure of an existing independent water switch mixing valve.

[0018] Figure 3 It is a schematic diagram of the mixing principle of an existing independent water switch mixing valve.

[0019] Figure 4 It is a schematic diagram of the structure of a mixing valve for shower use according to the present invention.

[0020] Figure 5 Schematic structural diagram of the cold water switch of a mixing valve for shower of the present invention.

[0021] Figure 6 Schematic horizontal sectional structural diagram of the water mixer of a mixing valve for shower of the present invention.

[0022] Figure 7 Schematic A-A sectional view of the water mixer of a mixing valve for shower of the present invention.

[0023] In the figure: 1. Cold water switch; 2. Hot water switch; 3. Water outlet pipe; 4. Mixing pipe; 5. Water outlet hole; 6. Water mixer; 61. Shell; 62. Cold water inlet; 63. First elastic sheet; 64. Hot water inlet; 65. Second elastic sheet; 66. First water passing hole; 67. Second water passing hole; 68. Mounting hole. Detailed implementation mode

[0024] A mixing valve for shower of the present invention has its preferred detailed implementation mode as Figure 4 shown.

[0025] A mixing valve for shower of the present invention includes a cold water switch 1, a hot water switch 2, a water outlet pipe 3, a water outlet hole 5, and a water mixer 6.

[0026] The cold water switch 1 and the hot water switch 2 are the same as those in the prior art, and both are provided with water outlet holes 5 on them. The cold water switch 1 and the hot water switch 2 are connected together through the water mixer 6;

[0027] The water outlet pipe 3 is vertically installed on the water mixer 6 and is internally connected to the water mixer 6. The water flow inside the water mixer 6 flows into the shower device through the water outlet pipe 3 for people to take a bath.

[0028] The said water mixer 6 is a rectangular parallelepiped container made of metal, and the edges and corners of the rectangular parallelepiped are all smoothly transitioned. The cold water inlet 62 is located on the upper side surface of the shell 61, and a first elastic sheet 63 is installed inside the cold water inlet 62. A first water passing hole 66 is formed between the first elastic sheet 63 and the front side surface of the shell 61; the hot water inlet 64 is located on the lower side surface of the shell 61, and a second elastic sheet 65 is installed inside the hot water inlet 64. A second water passing hole 67 is formed between the second elastic sheet 65 and the rear side surface of the shell 61. Cold water and hot water can respectively flow into the water mixer 6 through the upper and lower gaps between the first elastic sheet 63, the second elastic sheet 65 and the water mixer shell 61 and the first water passing hole 66, the second water passing hole 67.

[0029] The functions of the first elastic sheet 63 and the second elastic sheet 65 during the period are to reduce the flow rate of the flowing water when cold water and hot water enter the water mixer 6, reduce the impact on each other, and reduce the mutual influence, which can greatly reduce the influence of the water use of other water-using devices in the same water flow system on the temperature and flow rate of the bathing water.

[0030] Generally, since the hot water has to pass through the water heater before flowing into the hot water switch 2, the resistance of the water flow is relatively large. To reduce the impact of the flow rate change of the cold water when it enters the water mixer 6 on the hot water, the area of the first water passing hole 66 is made smaller than the area of the second water passing hole 67, so as to increase the damping effect of the cold water in the water mixer 6.

[0031] When the first elastic sheet 63 and the second elastic sheet 65 are impacted by the water flow, they can both swing slightly, and both can reduce the fluctuations of the temperature and flow rate of the bathing water caused by the water use of other water-using devices in the same water flow system.

[0032] The water outlet hole 5 on the cold water switch 1 is communicated with the cold water inlet 62, the water outlet hole 5 on the hot water switch 2 is communicated with the hot water inlet 64, and the upper surface of the housing 61 of the water mixer 6 is provided with a mounting hole 68, and is connected to the water outlet pipe 3 through the mounting hole 68, so that the water flow inside the water mixer 6 flows into the shower device through the water outlet pipe 3.

[0033] For a mixing valve for shower of the present invention, its operation method during bathing is the same as that of the existing shower water switch.

[0034] It is possible to first adjust the cold water switch to output a certain amount of cold water (or first adjust the hot water switch to output a certain amount of hot water), and then adjust the opening degree of the hot water switch to send out a certain amount of hot water. Since the mutual influence of the flow rate changes of cold water and hot water is greatly reduced, that is, "if the hot water flow rate is slightly larger, it will push the cold water back, and if the cold water flow rate is slightly larger, it will push the hot water back", it is very easy to adjust the appropriate water output, so that the temperature and flow rate of the mixed water meet the requirements of the human body for bathing, saving time and effort, reducing the waste of a large amount of water resources caused by the water flowing out during the debugging process, and also greatly reducing the accident of the human body being injured due to the too high temperature of the accidentally flowing out hot water. During the bathing process, the fluctuations of the water temperature and flow rate are greatly reduced, improving the comfort of people's bathing.

[0035] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A mixing valve for a shower, comprising a cold water switch (1), a hot water switch (2), a water outlet pipe (3), a water outlet hole (5), and a water mixer (6); The cold water switch (1) and the hot water switch (2) are both provided with water outlet holes (5), and the cold water switch (1) is connected to the hot water switch (2) through the water mixer (6); The water outlet pipe (3) is vertically installed above the water mixer (6) and is in communication with the inside of the water mixer (6). The water flow inside the water mixer (6) flows into the shower device through the water outlet pipe (3); The water mixer (6) is a rectangular parallelepiped container made of metal. The cold water inlet (62) is located on the upper side surface of the water mixer housing (61). A first elastic sheet (63) is installed inside the cold water inlet (62). A first water passing hole (66) is formed between the first elastic sheet (63) and the front side surface of the water mixer housing (61). The hot water inlet (64) is located on the lower side surface of the water mixer housing (61). A second elastic sheet (65) is installed inside the hot water inlet (64). A second water passing hole (67) is formed between the second elastic sheet (65) and the rear side surface of the water mixer housing (61), and the area of the first water passing hole (66) is smaller than the area of the second water passing hole (67); The water outlet hole (5) on the cold water switch (1) is in communication with the cold water inlet (62), and the water outlet hole (5) on the hot water switch (2) is in communication with the hot water inlet (64); Both the first elastic sheet (63) and the second elastic sheet (65) are elastic metal thin sheets. One end is fixed on the inner side surface of the water mixer housing (61), and the other end is a free end. There are gaps between their upper and lower edges and the upper and lower surfaces of the water mixer housing (61).

2. The mixing valve for shower according to claim 1, characterized in that, The upper surface of the water mixer housing (61) is provided with a mounting hole (68), and is connected to the water outlet pipe (3) through the mounting hole (68).

3. The mixing valve for shower according to claim 1, characterized in that, When the first elastic sheet (63) and the second elastic sheet (65) are impacted by water flow, they can both generate small swings.

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