Mixing jacket, mixing valve shaft, mixing valve core, thermostatic mixing valve and water heater

Abstract

The present invention relates to the technical field of water heaters, and discloses a water mixing sleeve, a water mixing valve shaft, a water mixing valve core, a thermostatic water mixing valve and a water heater. The water mixing sleeve comprises a sleeve body, a valve shaft accommodating cavity is formed in the sleeve body, a sleeve water mixing channel with a water outlet is formed on the cavity wall of the valve shaft accommodating cavity, and a sleeve water guide port is formed on the cavity wall. The sleeve water mixing channel is connected with the valve shaft accommodating cavity through the sleeve water guide port. In actual use, the water mixing sleeve is assembled into the valve body of the water mixing valve, the water mixing valve shaft and the valve shaft accommodating cavity are movably assembled, a water mixing chamber is formed between the water mixing valve shaft and the valve shaft accommodating cavity, the water mixing chamber is connected with the sleeve water mixing channel through the sleeve water guide port, the sleeve water mixing channel is connected with the thermostatic water outlet of the valve body of the water mixing valve through the water outlet, after cold and hot water are mixed in the water mixing chamber, they flow into the sleeve water mixing channel through the sleeve water guide port for further mixing, and then flow out from the thermostatic water outlet through the water outlet, and the mixing effect of cold and hot water is fully improved through multiple mixing of the water mixing chamber and the sleeve water mixing channel.

Description

[0001] This application claims priority to a patent application filed on June 11, 2018, with application number 201810597349.6 and titled "Thermostatic Mixing Valve and Water Heater".

[0002] This application claims priority to a patent application filed on June 11, 2018, with application number 201810619424.4 and titled "Thermostatic Mixing Valve and Water Heater". Technical Field

[0003] The present invention relates to the technical field of water heaters, and in particular to a water mixing jacket, a water mixing valve shaft, a water mixing valve core, a constant temperature water mixing valve and a water heater. Background Art

[0004] Consumers are paying more and more attention to the quality of life, and the comfort of bathing water, unstable water temperature, and overheating of water all affect consumers' bathing experience. At present, household water heaters are equipped with mixing valves, such as manual mixing valves or mechanical thermostatic valves. The valve core can adjust the supply of hot and cold water so that hot water and cold water are mixed for consumers to use.

[0005] However, the manual water mixing valve or mechanical thermostatic valve currently used in water heaters has the following disadvantages:

[0006] Manual water mixing valve, through the handle manually control the hot and cold water opening, so that the mixed water temperature reaches the water temperature required by consumers, but the disadvantage is that the hot and cold water are directly mixed at the water outlet, the mixing effect of hot and cold water is poor, and it is difficult to control manually, which can easily cause over-adjustment of water temperature and over-scalding. At the same time, as the outlet water temperature of the water heater gradually decreases, the outlet water temperature needs to be adjusted manually frequently;

[0007] The mechanical thermostatic valve has a temperature-sensitive valve core. The valve core push rod automatically expands and contracts with temperature changes, and the stroke displacement drives the valve core to move, controlling the ratio of cold and hot water, and the mixed water outlet temperature reaches the temperature required by consumers. The disadvantages are that cold and hot water are mixed directly at the outlet, the cold and hot water mixing effect is poor, the temperature adjustment is slow, the error between the set temperature and the actual outlet temperature is large, and the water temperature is unstable when the pressure and flow change. Summary of the invention

[0008] In a first aspect, the purpose of the present invention is to provide a water mixing jacket, which can effectively improve the mixing effect of cold and hot water in actual use to provide users with constant temperature water with suitable temperature.

[0009] In order to achieve the above-mentioned purpose, the present invention provides a water mixing jacket, which includes a jacket body, a valve shaft accommodating cavity formed in the jacket body, a jacket mixing water channel with a water outlet extending circumferentially formed on the cavity wall of the valve shaft accommodating cavity, and a jacket water guide port formed on the cavity wall, wherein the jacket mixing water channel is connected to the valve shaft accommodating cavity through the jacket water guide port.

[0010] By means of the above technical scheme, since the valve shaft accommodating chamber can be communicated with the sleeve water mixing channel through the sleeve water guide port on the chamber wall, in this way, in actual use, the water mixing sleeve can be assembled into the valve body of the water mixing valve, and the water mixing valve shaft can be movably assembled with the valve shaft accommodating chamber, and a water mixing chamber with a water inlet is formed between the water mixing valve shaft and the valve shaft accommodating chamber, the water mixing chamber is communicated with the sleeve water mixing channel through the sleeve water guide port, and the sleeve water mixing channel is communicated with the constant temperature water outlet of the valve body of the water mixing valve through the water outlet, so that the movement of the water mixing valve shaft, such as axial movement or rotation, can adjust the amount of cold water and hot water entering the mixing chamber through the cold water inlet and the hot water inlet on the valve body, after the cold and hot water are mixed in the mixing chamber, they then flow into the sleeve water mixing channel through the sleeve water guide port for further mixing, and then flow out from the constant temperature water outlet through the water outlet, so that the mixing effect of the cold and hot water can be fully improved through multiple mixing of the water mixing chamber and the sleeve water mixing channel.

[0011] Furthermore, a circumferentially extending and radially inwardly oriented groove is formed on the outer surface of the cavity wall to serve as the sleeve mixing water channel, wherein the groove side wall of the groove is used to connect to the inner surface of the inner cavity of the valve body of the water mixing valve.

[0012] Furthermore, the sink groove is an annular groove.

[0013] In addition, a plurality of valve shaft supporting ribs spaced apart in the circumferential direction are formed on the inner circumferential surface of the valve shaft accommodating cavity, and drainage grooves are formed between the valve shaft supporting ribs.

[0014] Optionally, the mixing jacket includes at least one of the following forms:

[0015] Form 1: A hot water inlet is formed at one end of the cavity wall and a cold water inlet is formed at the other end;

[0016] Form 2: One end of the valve shaft accommodating chamber is sealed by an end wall, an axially extending guide cylinder is provided on the outer end surface of the end wall, an anti-rotation convex strip is provided on the outer peripheral surface of one end of the sleeve, and the other end of the valve shaft accommodating chamber is open and a stopper is formed on the end surface of the open end;

[0017] Form three: An annular groove for accommodating a sleeve seal is formed on the outer peripheral surface of the sleeve body and is located at both axial ends of the sleeve mixing water channel.

[0018] In a second aspect, the present invention provides a water mixing valve shaft, the water mixing valve shaft comprising a shaft body, the shaft body being formed with a circumferentially extending shaft water mixing channel having a water outlet.

[0019] In actual use, as described above, the water mixing valve shaft can be movably assembled with the valve shaft accommodating chamber, the shaft water mixing channel is connected with the water mixing chamber through the water outlet, or the shaft water mixing channel is used to form the water mixing chamber, or the shaft water mixing channel serves as the water mixing chamber. In this way, the cold and hot water enter the shaft water mixing channel and mix before entering the water mixing chamber. After the cold and hot water are mixed in the water mixing chamber, they flow into the sleeve water mixing channel through the sleeve water guide port for further mixing, and then flow out from the constant temperature water outlet through the water outlet. In this way, the mixing effect of the cold and hot water can be fully improved through multiple mixing.

[0020] Furthermore, an intra-axial water mixing space with a water inlet is formed in the shaft body, the space wall of the intra-axial water mixing space forms the shaft mixing water channel, and an axial water guide port is formed on the space wall, wherein the intra-axial water mixing space is connected to the shaft mixing water channel through the axial water guide port.

[0021] Furthermore, a circumferentially extending and radially inwardly oriented sinking groove is formed on the outer surface of the space wall to serve as the shaft water mixing channel, wherein the groove side wall of the sinking groove is used to connect to the inner surface of the valve shaft accommodating cavity of the water mixing jacket.

[0022] Furthermore, the sink groove is an annular groove.

[0023] In addition, the mixing valve shaft includes at least one of the following modes:

[0024] Method 1: an axial hot water inlet is formed at one end of the space wall and an axial cold water inlet is formed at the other end;

[0025] Mode 2: The outer peripheral surface of the space wall is formed with shaft seal accommodating annular grooves located at the axial ends of the shaft water mixing channel;

[0026] Method three: a movable abutment block is provided on the shaft body.

[0027] In the third aspect, in the first embodiment, the present invention provides a water mixing valve core, which includes a water mixing valve shaft and a water mixing sleeve as described in any of the above first aspects, wherein the water mixing valve shaft is movably assembled with the valve shaft accommodating chamber, and a water mixing chamber with a water inlet is formed between the water mixing valve shaft and the valve shaft accommodating chamber, and the water mixing chamber is connected with the sleeve mixing water channel through the sleeve water guide port.

[0028] In this way, as described above, after the mixing valve core is assembled into the valve body of the mixing valve, the mixing valve shaft can move, such as axially moving or rotating, to adjust the amount of cold water and hot water entering the mixing water chamber through the cold water inlet and the hot water inlet on the valve body. After the cold and hot water are mixed in the mixing water chamber, they flow into the sleeve mixing water channel through the sleeve water guide port for further mixing, and then flow out from the constant temperature water outlet through the water outlet. In this way, through multiple mixing of the mixing water chamber and the sleeve mixing water channel, the mixing effect of cold and hot water can be fully improved.

[0029] Further, in the second embodiment, the water mixing valve shaft is capable of axially moving relative to the valve shaft accommodating chamber.

[0030] Optionally, in the third embodiment, the water mixing valve shaft is any water mixing valve shaft described in the second aspect, wherein the water mixing chamber is in communication with the shaft water mixing channel.

[0031] Further, in the fourth embodiment, the mixing valve shaft can rotate to adjust the communication area between the sleeve cold water inlet on the cavity wall and the shaft cold water inlet on the space wall and the communication area between the sleeve hot water inlet on the cavity wall and the shaft hot water inlet on the space wall to adjust the amount of cold and hot water inlet into the intra-shaft mixing water space, wherein the shaft mixing water channel serves as the mixing water chamber; and / or the shaft water guide port on the space wall of the intra-shaft mixing water space within the shaft body and the sleeve water guide port on the cavity wall of the valve shaft accommodating cavity within the sleeve body are staggered in the circumferential direction.

[0032] In a fourth aspect, the present invention provides a constant temperature mixing valve, comprising a valve body and a mixing valve core as described in the first embodiment or the second embodiment in the third aspect, wherein a cold water chamber and a hot water chamber are formed in the valve body and the valve body has a constant temperature water outlet, the cold water chamber has a cold water inlet and a cold water outlet, and the hot water chamber has a hot water inlet; wherein the mixing valve shaft can move to adjust the communication area between the cold water chamber and the hot water chamber and the mixing water chamber respectively, and the sleeve mixing water channel is connected to the constant temperature water outlet.

[0033] In this way, as described above, the thermostatic water mixing valve can mix the cold and hot water multiple times, thereby fully improving the mixing effect of the cold and hot water.

[0034] Furthermore, the constant temperature water outlet is connected to a constant temperature water outlet pipe section, and a mixed water sensor is arranged at a position in the constant temperature water outlet pipe section away from the constant temperature water outlet.

[0035] In a fifth aspect, the present invention provides a constant temperature mixing water valve, comprising a valve body and a mixing water valve core as described in the third embodiment or the fourth embodiment in the third aspect above, wherein a cold water chamber and a hot water chamber are formed in the valve body and has a constant temperature water outlet, the cold water chamber has a cold water inlet and a cold water outlet, and the hot water chamber has a hot water inlet; wherein the mixing water valve shaft can move to adjust the communication area between the cold water chamber and the hot water chamber and the mixing water chamber respectively, and the sleeve mixing water channel is connected to the constant temperature water outlet; the constant temperature water outlet is connected to a constant temperature water outlet pipe section, and a mixing water sensor is provided in the constant temperature water outlet pipe section at a position away from the constant temperature water outlet.

[0036] In this way, as mentioned above, at the same time, since the mixed water sensor is arranged in the constant temperature water outlet section at a position away from the constant temperature water outlet, the mixed water flowing out of the constant temperature water outlet will be further mixed in the constant temperature water outlet section, and then the real-time temperature will be detected after passing through the mixed water sensor, so as to timely adjust the amount of cold and hot water intake according to the detected mixed water temperature. In this way, the cold and hot water are mixed multiple times, thereby fully improving the mixing effect of cold and hot water.

[0037] In a sixth aspect, the present invention provides a water heater, comprising a water heater body having a cold water interface and a hot water interface and a constant temperature mixing valve as described in any of the fourth and fifth aspects above, wherein the cold water outlet is connected to the cold water interface; and the hot water inlet is connected to the hot water interface.

[0038] In this way, as described above, the overall quality of the water heater is significantly improved because mixed water with good mixing effect can be provided.

[0039] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0041] Figure 1 It is a cross-sectional structural schematic diagram of a thermostatic water mixing valve provided in a specific embodiment of the present invention;

[0042] Figure 2 yes Figure 1 Schematic diagram of the local enlarged structure in;

[0043] Figure 3 yes Figure 1 A stereogram of a central mixing jacket from one perspective;

[0044] Figure 4 yes Figure 3A stereogram of the mixing jacket from another perspective;

[0045] Figure 5 yes Figure 1 A three-dimensional diagram of the local structure of the middle mixing valve shaft from one perspective;

[0046] Figure 6 yes Figure 5 A three-dimensional diagram of the local structure of the middle mixing valve shaft from another perspective;

[0047] Figure 7 It is a cross-sectional structural schematic diagram of another thermostatic water mixing valve provided in a specific embodiment of the present invention;

[0048] Figure 8 yes Figure 7 Schematic diagram of the local enlarged structure in;

[0049] Fig. 9 yes Figure 7 A stereogram of a mixing jacket from one perspective;

[0050] Fig.10 yes Figure 7 A stereoscopic view of a mixing valve core from one perspective.

[0051] Description of Reference Numerals

[0052] 1-valve body, 2-mixing valve core, 3-cold water chamber, 4-hot water chamber, 5-constant temperature water outlet, 6-cold water inlet, 7-cold water outlet, 8-hot water inlet, 9-mixing water space in the shaft, 10-mixing water jacket, 11-mixing valve shaft, 12-set of water guide ports, 13-set of cold water inlet, 14-set of hot water inlet, 15-shaft cold water inlet, 16-shaft hot water inlet, 17-shaft water guide ports, 18-set of mixing water channels, 19-shaft mixing water channels, 20 - inlet, 21- front seat body, 22- outlet, 23- rear seat body, 24- spring, 25- check column, 26- conical surface, 27- elastic sealing ring, 28- motor, 29- constant temperature water outlet pipe section, 30- mixed water sensor, 31- valve shaft support rib, 32- drainage groove, 33- guide cylinder, 34- anti-rotation convex strip, 35- stop block, 36- sleeve seal accommodating ring groove, 37- shaft seal accommodating ring groove, 38- movable abutment block. DETAILED DESCRIPTION

[0053] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0054] refer to Figure 3 , Figure 4 ,and Fig. 9In a first aspect, the present invention provides a water mixing sleeve 10, which includes a sleeve body, a valve shaft accommodating chamber formed in the sleeve body, a water mixing valve shaft 11 can be movably assembled with the valve shaft accommodating chamber, such as axially movable or rotatable, a circumferentially extending sleeve mixing channel 18 with a water outlet is formed on the cavity wall of the valve shaft accommodating chamber, and a sleeve water guide port 12 is formed on the cavity wall, wherein the sleeve mixing channel 18 is connected to the valve shaft accommodating chamber through the sleeve water guide port 12.

[0055] Thus, in the water mixing sleeve 10, since the valve shaft accommodating chamber can be communicated with the sleeve water mixing channel 18 through the sleeve water guide port 12 on the chamber wall, in actual use, the water mixing sleeve 10 can be assembled into the valve body 1 of the water mixing valve, and the water mixing valve shaft 11 can be movably assembled with the valve shaft accommodating chamber, and a water mixing chamber with a water inlet is formed between the water mixing valve shaft 11 and the valve shaft accommodating chamber, the water mixing chamber is communicated with the sleeve water mixing channel 18 through the sleeve water guide port 12, and the sleeve water mixing channel 18 is connected to the valve of the water mixing valve through the water outlet. The constant temperature water outlet 5 of the body is connected, so that the mixing valve shaft 11 can move, such as axial movement or rotation, to adjust the amount of cold water and hot water entering the mixing water chamber through the cold water inlet 6 and the hot water inlet 8 on the valve body 1. After the cold and hot water are mixed in the mixing water chamber, they flow into the jacket mixing water channel 18 through the jacket water guide port 12 for further mixing, and then flow out from the constant temperature water outlet 5 through the water outlet. In this way, through multiple mixing of the mixing water chamber and the jacket mixing water channel 18, the mixing effect of cold and hot water can be fully improved.

[0056] It should be understood that the sleeve mixing water channel 18 can be formed inside the cavity wall of the valve shaft accommodating cavity and include a water outlet; or Figure 3 , Figure 4 ,and Fig. 9 As shown, a circumferentially extending and radially inwardly trough is formed on the outer surface of the cavity wall to serve as a jacket mixing water channel 18. At this time, the open outer side of the trough is the water outlet. When the mixing water jacket 10 is assembled into the valve body cavity of the water mixing valve, the groove side wall of the trough is used to connect to the inner surface of the valve body cavity of the water mixing valve. In this way, the trough and the inner surface of the valve body cavity together form a circumferentially extending water channel.

[0057] Of course, the sink groove can be a circumferential groove section, or a spirally extended groove section, or the sink groove can be an annular groove, and the water guide port 12 is formed on the groove bottom surface of the annular groove. The annular groove is convenient for processing and forming, and is also convenient for assembly to connect with the constant temperature water outlet 5 on the valve body of the mixing valve. For example, the constant temperature water outlet 5 can be directly located in the area of ​​the annular groove. Furthermore, the constant temperature water outlet 5 and the sleeve water guide port 12 are staggered in the circumferential direction. For example, the two are arranged relative to each other in the diameter direction of the mixing sleeve. In this way, while extending the mixing water path, it is convenient for the mixed water to flow evenly from the circumferential sides of the sleeve water guide port 12 to the constant temperature water outlet 5 and be further mixed while flowing.

[0058] In addition, the water mixing jacket 10 can have a variety of structural forms, but no matter which structural form it is, it only needs to have the above-mentioned "the cavity wall of the valve shaft accommodating cavity is formed with a circumferentially extending jacket water mixing channel 18 with a water outlet, the cavity wall is formed with a jacket water guide port 12, and the jacket water mixing channel 18 is connected with the valve shaft accommodating cavity through the jacket water guide port 12". In addition, in the water mixing jacket 10, the cold and hot water inlets entering the valve shaft accommodating cavity can also have a variety of forms, but no matter which form it is, it only needs to allow cold and hot water to enter the valve shaft accommodating cavity, so that after the water mixing valve shaft 11 is assembled into the valve shaft accommodating cavity, the cold and hot water can enter the water mixing cavity between the water mixing valve shaft 11 and the valve shaft accommodating cavity.

[0059] for example, Fig. 9 In a water mixing jacket 10 of a structural form shown in FIG. 1 , a plurality of valve shaft support ribs 31 arranged circumferentially at intervals are formed on the inner circumferential surface of the valve shaft accommodating cavity, and drainage grooves 32 are formed between the valve shaft support ribs 31. The valve shaft support ribs 31 can support and position the water mixing valve shaft 11, so as to facilitate the rotation or axial movement of the water mixing valve shaft 11. Fig.10 As shown, the drainage grooves 32 on both axial sides of the valve shaft accommodating chamber can serve as water inlets of the water mixing chamber, allowing cold water and hot water to flow into the water mixing chamber when the water mixing valve shaft 11 rotates or moves axially.

[0060] For example, Figure 3 and Figure 4 In the mixing jacket 10 of a structural form shown, the mixing jacket includes at least one of the following forms:

[0061] Form 1: A jacket hot water inlet 14 is formed at one end of the cavity wall and a jacket cold water inlet 13 is formed at the other end. The jacket hot water inlet 14 and the jacket cold water inlet 13 are connected to the valve shaft accommodating cavity. In this way, the mixing valve shaft 11 rotates or moves axially to adjust the communication area between the jacket hot water inlet 14 and the jacket cold water inlet 13 and the mixing water cavity, so as to adjust the water inflow of hot and cold water;

[0062] Form 2: One end of the valve shaft accommodating chamber is sealed by an end wall, and an axially extending guide cylinder 33 is provided on the outer end surface of the end wall, such as Figure 1 and Figure 2As shown, the guide cylinder 33 can be convenient for accommodating and guiding the reciprocating movement of the check column 25 described below. For example, the check column 25 moves toward the guide cylinder 33 to open the inlet 20, at which time, the check column 25 can enter the guide cylinder 33. An anti-rotation convex strip 34 is provided on the outer peripheral surface of one end of the sleeve body, and the other end of the valve shaft accommodating cavity is open and a stopper 35 is formed on the end surface of the open end. In this way, in one embodiment, the mixing valve shaft 11 is rotatably assembled in the valve shaft accommodating cavity. At this time, the anti-rotation convex strip 34 can cooperate with the stopper or groove in the inner cavity of the valve body of the mixing valve to prevent the mixing sleeve 10 from rotating when the mixing valve shaft 11 rotates, and the stopper 35 can contact with the movable abutment block 38 on the mixing valve shaft 11 to limit the rotation limit position of the mixing valve shaft 11;

[0063] Form 3: The outer peripheral surface of the sleeve body is formed with sleeve seal accommodating annular grooves 36 located at the axial ends of the sleeve mixing water channel 18. Figure 1 As shown, the sleeve seal can be disposed in the sleeve seal receiving annular groove 36 to improve the assembly sealing performance between the mixing jacket and the inner cavity of the valve body.

[0064] In a second aspect, the present invention provides a water mixing valve shaft, referring to Figure 5 and Figure 6 as well as Figure 8 The water mixing valve shaft 11 includes a shaft body, and the shaft body is formed with a circumferentially extending shaft water mixing channel 19 with a water outlet.

[0065] In actual use, as described above, the water mixing valve shaft 11 can be movably assembled with the valve shaft accommodating chamber, and the shaft water mixing channel 19 is connected to the water mixing chamber through the water outlet, or the shaft water mixing channel 19 is used to form the water mixing chamber, or the shaft water mixing channel 19 serves as the water mixing chamber. In this way, the cold and hot water enter the shaft water mixing channel 19 and mix before entering the water mixing chamber. After the cold and hot water are mixed in the water mixing chamber, they flow into the sleeve water mixing channel through the sleeve water guide port for further mixing, and then flow out from the constant temperature water outlet through the water outlet. In this way, the mixing effect of the cold and hot water can be fully improved through multiple mixing.

[0066] Furthermore, in order to improve the mixing effect of hot and cold water, e.g. Figure 1 , Figure 5 and Figure 6 As shown, an in-shaft water mixing space 9 having a water inlet is formed in the shaft body, an in-shaft water mixing channel 19 is formed on the space wall of the in-shaft water mixing space 9, and an in-shaft water guide port 17 is formed on the space wall, wherein the in-shaft water mixing space 9 is connected to the in-shaft water mixing channel 19 through the in-shaft water guide port 17. In this way, cold and hot water enter the in-shaft water mixing space 9 through the water inlet to be mixed in advance, and then flow into the in-shaft water mixing channel 19 through the in-shaft water guide port 17 to continue mixing, thereby improving the mixing effect of cold and hot water.

[0067] It should be understood that the shaft mixing water channel 19 can be formed inside the space wall and include a water outlet; or Figure 5 and Figure 6 As shown, a circumferentially extending and radially inwardly trough is formed on the outer surface of the space wall to serve as an axial water mixing channel 19. At this time, the open outer side of the trough is the water outlet. When the water mixing valve shaft is transferred to the valve shaft accommodating chamber of the water mixing jacket, the groove side wall of the trough is used to connect to the inner surface of the valve shaft accommodating chamber of the water mixing jacket. In this way, the trough and the inner surface of the valve shaft accommodating chamber together form a circumferentially extending water channel.

[0068] Of course, the sink groove can be a circumferential groove section, or a spirally extended groove section, or the sink groove is an annular groove, and the shaft water guide port 17 is formed on the groove bottom surface of the annular groove. The annular groove is convenient for processing and forming, and is also convenient for connecting with the sleeve water guide port 12 after assembly. For example, the sleeve water guide port 12 can be directly located in the area of ​​the annular groove. The shaft water guide port 17 and the sleeve water guide port 12 are staggered in the circumferential direction, for example, the two are arranged relative to each other in the diameter direction of the mixing sleeve. In this way, while extending the mixing water path, it is convenient for the mixed water to flow evenly from the circumferential sides of the shaft water guide port 17 to the sleeve water guide port 12 and further mix while flowing.

[0069] exist Figure 5 and Figure 6 In the illustrated mixing valve shaft 11, the mixing valve shaft 11 includes at least one of the following modes:

[0070] Method 1: an axial hot water inlet 16 is formed at one end of the space wall, and an axial cold water inlet 15 is formed at the other end; in this way, the mixing valve shaft 11 rotates or moves axially to adjust the amount of hot and cold water entering the axial mixing space 9 through the axial hot water inlet 16 and the axial cold water inlet 15. Of course, the space wall can be a space side wall or a space end wall in the axial direction.

[0071] Method 2: The outer peripheral surface of the space wall is formed with shaft seal accommodating annular grooves 37 located at both axial ends of the shaft mixing water channel 19; thus, the shaft seal can be arranged in the shaft seal accommodating annular grooves 37, such as Figure 1 As shown, the sealing performance of the mixing valve shaft 11 is improved when it rotates or moves axially.

[0072] Method three: A movable abutment block 38 is provided on the shaft body, and the movable abutment block 38 can limit the extreme position of axial movement or rotation of the mixing valve shaft 11. For example, the stopper 35 mentioned above can contact the movable abutment block 38 on the mixing valve shaft 11 to limit the rotational extreme position of the mixing valve shaft 11.

[0073] In a third aspect, in a first embodiment, the present invention provides a water mixing valve core 2, referring to Figure 1 , Figure 8 , Fig.10The mixing valve core 2 includes a mixing valve shaft 11 and a mixing sleeve 10 as described in any of the first aspects above, wherein the mixing valve shaft 11 is movably assembled with the valve shaft accommodating chamber, and a mixing chamber with a water inlet is formed between the mixing valve shaft 11 and the valve shaft accommodating chamber, and the mixing chamber is connected to the sleeve mixing channel 18 through the sleeve water guide port 12.

[0074] In this way, as described above, after the mixing valve core is assembled into the valve body of the mixing valve, the mixing valve shaft can move, such as axially moving or rotating, to adjust the amount of cold water and hot water entering the mixing water chamber through the cold water inlet and the hot water inlet on the valve body. After the cold and hot water are mixed in the mixing water chamber, they flow into the sleeve mixing water channel through the sleeve water guide port for further mixing, and then flow out from the constant temperature water outlet through the water outlet. In this way, through multiple mixing of the mixing water chamber and the sleeve mixing water channel, the mixing effect of cold and hot water can be fully improved.

[0075] In the second embodiment, as described above, the water mixing valve shaft 11 can move axially relative to the valve shaft accommodating chamber, for example, Figure 7 In the structure shown, the rotation of the motor can drive the mixing valve shaft 11 to move axially to adjust the amount of hot and cold water entering the mixing water chamber, or the mixing valve shaft 11 can rotate relative to the valve shaft accommodating chamber, for example, Figure 1 In the structure shown, the rotation of the motor 28 can drive the water mixing valve shaft 11 to rotate, so as to also adjust the amount of cold and hot water entering the water mixing chamber.

[0076] In addition, the water mixing valve shaft 11 can have a variety of structural forms, but no matter which structural form is adopted, it can form a water mixing chamber with a water inlet between it and the valve shaft accommodating chamber. For example, the water mixing valve shaft 11 can be a bare shaft (that is, the shaft water mixing channel 19 is not formed), or, in the third embodiment, the water mixing valve shaft 11 can be any water mixing valve shaft described in the second aspect above, wherein the water mixing chamber is communicated with the shaft water mixing channel 19. For example, the shaft water mixing channel 19 is the water mixing chamber.

[0077] In the fourth embodiment, further, as Figure 1-6As shown, the water mixing valve shaft 11 can rotate to adjust the communication area between the jacket cold water inlet 13 on the cavity wall and the shaft cold water inlet 15 on the space wall and the communication area between the jacket hot water inlet 14 on the cavity wall and the shaft hot water inlet 16 on the space wall to adjust the amount of cold and hot water entering the shaft mixing space 9, that is, to adjust the inlet overlap between the jacket cold water inlet 13 and the shaft cold water inlet 15, and to adjust the inlet overlap between the jacket hot water inlet 14 and the shaft hot water inlet 16, wherein the shaft mixing channel 19 serves as a water mixing chamber, thereby adjusting the amount of cold and hot water entering the shaft mixing space 9; and / or, the shaft water guide port 17 on the space wall of the shaft mixing space 9 in the shaft body and the sleeve water guide port 12 on the cavity wall of the valve shaft accommodating cavity in the sleeve body are staggered in the circumferential direction. In this way, while extending the water mixing path, it is convenient for the mixed water to flow evenly from the circumferential sides of the shaft water guide port 17 to the sleeve water guide port 12 and further mix while flowing.

[0078] In a fourth aspect, the present invention provides a constant temperature mixing valve, comprising a valve body 1 and a mixing valve core 2 as described in the first embodiment or the second embodiment in the third aspect, wherein a cold water chamber 3 and a hot water chamber 4 are formed in the valve body 1 and has a constant temperature water outlet 5, the cold water chamber 3 has a cold water inlet 6 and a cold water outlet 7, and the hot water chamber 4 has a hot water inlet 8; wherein the mixing valve shaft 11 can move to adjust the connection area between the cold water chamber 3 and the hot water chamber 4 and the mixing water chamber respectively, and the sleeve mixing water channel 18 is connected to the constant temperature water outlet 5.

[0079] In this way, as described above, the thermostatic water mixing valve can mix the cold and hot water multiple times, thereby fully improving the mixing effect of the cold and hot water.

[0080] Furthermore, if Figure 7 As shown, the constant temperature water outlet 5 is connected to the constant temperature water outlet pipe section 29, and a water mixing sensor 30 is arranged at a position far away from the constant temperature water outlet 5 in the constant temperature water outlet pipe section 29. Since the water mixing sensor is arranged at a position far away from the constant temperature water outlet in the constant temperature water outlet pipe section, the mixed water flowing out of the constant temperature water outlet will be further mixed in the constant temperature water outlet pipe section, and then the real-time temperature will be detected after passing through the water mixing sensor, so as to timely adjust the cold and hot water inlet amount according to the detected mixed water temperature, so that the cold and hot water are mixed multiple times, thereby fully improving the mixing effect of the cold and hot water.

[0081] In a fifth aspect, the present invention provides a constant temperature mixing valve, comprising a valve body 1 and a mixing valve core described in the third embodiment or the fourth embodiment in the third aspect above, wherein a cold water chamber 3 and a hot water chamber 4 are formed in the valve body 1 and has a constant temperature water outlet 5, the cold water chamber 3 has a cold water inlet 6 and a cold water outlet 7, and the hot water chamber 4 has a hot water inlet 8; wherein the mixing valve shaft 11 can move to adjust the connection area between the cold water chamber 3 and the hot water chamber 4 and the mixing water chamber respectively, and the sleeve mixing channel 18 is connected to the constant temperature water outlet 5; the constant temperature water outlet 5 is connected to a constant temperature water outlet pipe section 29, and a mixing water sensor 30 is arranged at a position in the constant temperature water outlet pipe section 29 away from the constant temperature water outlet 5.

[0082] In this way, as mentioned above, at the same time, since the mixed water sensor is arranged in the constant temperature water outlet section at a position away from the constant temperature water outlet, the mixed water flowing out of the constant temperature water outlet will be further mixed in the constant temperature water outlet section, and then the real-time temperature will be detected after passing through the mixed water sensor, so as to timely adjust the amount of cold and hot water intake according to the detected mixed water temperature. In this way, the cold and hot water are mixed multiple times, thereby fully improving the mixing effect of cold and hot water.

[0083] In addition, considering that the water pressure of hot and cold water may change in actual use, for example, when the water mixing valve core 2 simultaneously connects the cold water chamber and the hot water chamber to the mixing chamber, if the cold water pressure is too large, the cold water may enter the hot water chamber through the mixing chamber, thereby forcing the hot water to flow backwards, which may cause a large amount of cold water to flow out of the constant temperature water outlet 5 and affect the user's use experience. Therefore, further, if Figure 1 and Figure 2 As shown, a one-way check device is provided in the hot water flow channel between the hot water inlet 8 and the in-shaft water mixing space 9, which allows hot water to flow into the in-shaft water mixing space 9. In this way, the one-way check device can only allow hot water to pass through and flow into the mixing chamber, and can prevent cold water from forcing hot water to flow back from the hot water inlet 8.

[0084] Of course, the one-way check device can be arranged at any suitable position, for example, it can be arranged at the shaft hot water inlet 16, or Figure 1 and Figure 2 As shown, the one-way check device is arranged in the hot water chamber 4. In this way, the inner space of the hot water chamber 4 can be fully utilized to conveniently install the one-way check device.

[0085] Furthermore, the one-way check device can be axially positioned by its own positioning structure, or, as Figure 1 As shown, the one-way check device is axially limited by the water mixing valve core 2. For example, the end of the one-way check device can be against the end surface of the water mixing valve core 2, while the rotation of the water mixing valve core 2 is not affected.

[0086] Of course, the one-way check device can have various forms. For example, in one form, Figure 1 and Figure 2 As shown, the one-way check device includes a front seat body 21 with an inlet 20, a rear seat body 23 with an outlet 22, a spring 24 and a check column 25, wherein the front seat body 21 and the rear seat body 23 are fixedly connected and arranged in the hot water chamber 4, the check column 25 can be slidably arranged between the front seat body 21 and the rear seat body 23, and the spring 24 is connected between the check column 25 and the rear seat body 23; the check column 25 can block or open the inlet 20. In this way, under the pressure of hot water, the hot water pushes the check column 25 open to open the inlet 20, thereby allowing the hot water to enter the mixing water chamber through the shaft hot water port 16. If the pressure of the hot water is not enough to push the check column 25, an appropriate pressurizing device can be set at the hot water inlet 8 to increase the pressure of the hot water. When the pressure of the cold water is too large, the check column 25 can block the inlet 20 to prevent the cold water from passing through.

[0087] Furthermore, if Figure 2 As shown, in order to facilitate the check column 25 to block or open the inlet 20, preferably, the inner circumference of the inlet 20 is formed into a tapered surface 26 that expands toward the rear seat body 23, and the outer circumference of the check column 25 is provided with an elastic sealing ring 27 that can contact the tapered surface 26. In this way, when the check column 25 blocks the inlet 20, the elastic sealing ring 27 and the tapered surface 26 are in a gradual contact seal, and this gradual contact seal also facilitates the elastic sealing ring 27 to leave the tapered surface 26 and open the inlet 20.

[0088] Alternatively, in another form of the one-way check device, the one-way check device is an elastic valve sheet, wherein the elastic valve sheet is fixedly connected to the inner surface of the hot water chamber 4 to cover the hot water inlet 8 and can be flipped toward the inside of the hot water chamber 4 under the action of hot water to open the hot water inlet 8. For example, the elastic valve sheet can be a high temperature resistant silicone sheet.

[0089] In addition, in order to improve the convenience of user use and improve the accuracy of mixing cold and hot water, preferably, Figure 1 As shown, the thermostatic mixing valve includes a cold water sensor, a hot water sensor and a motor 28 for connecting to a control unit, wherein the cold water sensor is arranged on the wall of the cold water chamber 3 to detect the temperature of the cold water in the cold water chamber 3; the hot water sensor is arranged on the wall of the hot water chamber 4 to detect the temperature of the hot water in the hot water chamber 4; the motor 28 includes a plug connector for connecting to the control unit and can drive the mixing valve core 2 to rotate, for example, it is connected to the mixing valve core 2 through a transmission joint.

[0090] In this way, after the thermostatic mixing valve is actually assembled, the cold water sensor, the hot water sensor, the mixing water sensor and the motor 28 are connected to the control unit. In actual use, the user can set the water outlet temperature according to his or her own needs, and the control unit can calculate the parameters according to the specific control logic and the cold and hot water mixing ratio, and control the amount of cold and hot water entering the mixing chamber by rotating the valve core, such as the valve core shaft, driven by the motor, so as to achieve automatic adjustment of the cold and hot water mixing ratio. The water outlet temperature can be controlled at the water temperature set by the user, and constant flow and constant temperature water can be discharged, and water temperature fluctuations and high temperature scalding prevention can be effectively controlled. It is simple to operate, precisely controlled, and comfortable to use, for example, it allows users to have a better bathing experience; and the angle control of the motor-driven valve core rotation is achieved through real-time detection of the set temperature, actual water outlet temperature, cold water temperature, and hot water temperature, and is controlled through program operation to achieve a constant and accurate output of the water outlet temperature.

[0091] Furthermore, the motor can be provided with a zero limit switch to control the initial angle position of the motor, making the rotation adjustment process more precisely controlled. The control variable parameters are tested by hot water, cold water, and constant temperature outlet water, and accurate temperature values ​​are fed back in real time. The motor rotation amount can be gradually fine-tuned according to the temperature change to achieve constant outlet water temperature control.

[0092] In addition, in order to facilitate the connection of the thermostatic mixing valve, the hot water inlet 8 is connected to a hot water flexible joint, and the cold water outlet 7 is connected to a cold water flexible joint, so as to facilitate connection with a water heater, for example.

[0093] Finally, the present invention provides a water heater, which includes a water heater body having a cold water interface and a hot water interface and any of the above-mentioned thermostatic water mixing valves, wherein the cold water outlet 7 is connected to the cold water interface; and the hot water inlet 8 is connected to the hot water interface. Thus, as described above, through the thermostatic water mixing valve, the water heater can meet the consumer's comfortable bathing requirements and improve the overall quality of the water heater.

[0094] Further, in order to facilitate user control, the water heater includes a control display interface and a control unit, wherein, in the case where the thermostatic water mixing valve includes a cold water sensor, a hot water sensor, a mixed water sensor and a motor 28, the cold water sensor, the hot water sensor, the mixed water sensor and the motor 28 are connected to the control unit. In this way, the user can operate the control display interface to set the outlet water temperature according to his or her needs, and the control unit can control the amount of cold and hot water entering the mixing chamber by driving the valve core, such as the valve core shaft, to rotate according to a specific control logic and cold and hot water mixing ratio calculation parameters, so as to achieve automatic adjustment of the cold and hot water mixing ratio, and the outlet water temperature can be controlled at the water temperature set by the user, and constant flow and constant temperature water can be discharged, and water temperature fluctuation and high temperature scalding prevention can be effectively controlled, with simple operation, precise control and comfortable use, such as better bathing experience for users; and the angle control of the motor driving the valve core to rotate is achieved by real-time detection of the set temperature, actual outlet water temperature, cold water temperature and hot water temperature, and program operation control, so as to achieve constant and accurate output of outlet water temperature.

[0095] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0096] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0097] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A water mixing jacket, characterized in that: The water mixing jacket is used for a thermostatic water mixing valve of a water heater, the water mixing jacket (10) comprising a jacket body, a valve shaft accommodating chamber formed in the jacket body, a jacket water mixing channel (18) with a water outlet extending in a circumferential direction formed on the chamber wall of the valve shaft accommodating chamber, a jacket water guide port (12) formed on the chamber wall, wherein the jacket water mixing channel (18) is connected to the valve shaft accommodating chamber through the jacket water guide port (12); One end of the valve shaft accommodating cavity is sealed by an end wall, and an axially extending guide cylinder (33) is arranged on the outer end surface of the end wall. The guide cylinder (33) is used to accommodate and guide the reciprocating movement of a check column (25) of a one-way check device, wherein the check column (25) is slidably arranged on the hot water inlet path and only allows hot water to pass through.

2. The mixing jacket according to claim 1, characterized in that: A circumferentially extending and radially inwardly oriented groove is formed on the outer surface of the cavity wall to serve as the jacket water mixing channel (18), wherein the groove side wall of the groove is used to connect to the inner surface of the inner cavity of the valve body of the water mixing valve.

3. The mixing jacket according to claim 2, characterized in that: The sinking groove is an annular groove.

4. The mixing jacket according to any one of claims 1 to 3, characterized in that: The mixing jacket includes at least one of the following forms: Form 1: A hot water inlet (14) is formed at one end of the cavity wall and a cold water inlet (13) is formed at the other end; Form 2: An anti-rotation convex strip (34) is provided on the outer peripheral surface of one end of the sleeve body, and the other end of the valve shaft accommodating cavity is open and a stopper (35) is formed on the end surface of the open end; Form three: The outer peripheral surface of the sleeve body is formed with sleeve seal accommodating annular grooves (36) located at the axial ends of the sleeve water mixing channel (18).

5. A water mixing valve core, characterized in that: The water mixing valve core (2) comprises a water mixing valve shaft (11) and a water mixing jacket (10) according to any one of claims 1 to 4, wherein: The water mixing valve shaft (11) is movably assembled with the valve shaft accommodating chamber, and a water mixing chamber with a water inlet is formed between the water mixing valve shaft (11) and the valve shaft accommodating chamber. The water mixing chamber is connected with the sleeve water mixing channel (18) through the sleeve water guide port (12).

6. The water mixing valve core according to claim 5, characterized in that: The water mixing valve shaft (11) is capable of axially moving relative to the valve shaft accommodating chamber.

7. The water mixing valve core according to claim 5, characterized in that: The water mixing valve shaft (11) comprises a shaft body, the shaft body being formed with a circumferentially extending shaft water mixing channel (19) having a water inlet and a water outlet, wherein the water mixing chamber is in communication with the shaft water mixing channel (19).

8. The water mixing valve core according to claim 7, characterized in that: An in-shaft water mixing space (9) having a water inlet is formed in the shaft body, the space wall of the in-shaft water mixing space (9) forms the shaft water mixing channel (19), and an in-shaft water guide port (17) is formed on the space wall, wherein the in-shaft water mixing space (9) is connected to the shaft water mixing channel (19) via the shaft water guide port (17).

9. The water mixing valve core according to claim 8, characterized in that: A circumferentially extending and radially inwardly oriented groove is formed on the outer surface of the space wall to serve as the shaft water mixing channel (19), wherein the groove side wall of the groove is used to connect to the inner surface of the valve shaft accommodating cavity of the water mixing jacket.

10. The water mixing valve core according to claim 9, characterized in that: The sinking groove is an annular groove.

11. The water mixing valve core according to any one of claims 8 to 10, characterized in that: The mixing valve shaft includes at least one of the following methods: Mode 1: A shaft hot water inlet (16) is formed at one end of the space wall and a shaft cold water inlet (15) is formed at the other end; Mode 2: The outer peripheral surface of the space wall is formed with shaft seal accommodating annular grooves (37) located at both axial ends of the shaft water mixing channel (19); Mode three: a movable abutment block (38) is provided on the shaft body.

12. The water mixing valve core according to claim 8, characterized in that: The water mixing valve shaft (11) is rotatable to adjust the communication area between the jacket cold water inlet (13) on the cavity wall and the shaft cold water inlet (15) on the space wall and the communication area between the jacket hot water inlet (14) on the cavity wall and the shaft hot water inlet (16) on the space wall to adjust the amount of cold and hot water inlet into the water mixing space (9) in the shaft, wherein the shaft water mixing channel (19) serves as the water mixing chamber; and / or, The shaft water guide port (17) on the space wall of the shaft water mixing space (9) in the shaft body and the sleeve water guide port (12) on the cavity wall of the valve shaft accommodating cavity in the sleeve body are staggered in the circumferential direction.

13. A thermostatic water mixing valve, characterized in that: It comprises a valve body (1) and a water mixing valve core (2) as claimed in claim 5 or 6, wherein: The valve body (1) is formed with a cold water chamber (3) and a hot water chamber (4) and has a constant temperature water outlet (5); the cold water chamber (3) has a cold water inlet (6) and a cold water outlet (7); the hot water chamber (4) has a hot water inlet (8); in, The water mixing valve shaft (11) is movable to adjust the communication areas between the cold water chamber (3) and the hot water chamber (4) and the water mixing chamber respectively; the water mixing channel (18) is connected to the constant temperature water outlet (5); a one-way check device is provided in the hot water flow channel between the hot water inlet (8) and the water mixing chamber to allow hot water to flow into the water mixing chamber; the one-way check device is provided in the hot water chamber.

14. The thermostatic mixing valve according to claim 13, characterized in that: The constant temperature water outlet (5) is connected to a constant temperature water outlet pipe section (29), and a water mixing sensor (30) is provided at a position in the constant temperature water outlet pipe section (29) away from the constant temperature water outlet (5).

15. A thermostatic water mixing valve, characterized in that: It comprises a valve body (1) and a water mixing valve core as claimed in any one of claims 7 to 12, wherein: The valve body (1) is formed with a cold water chamber (3) and a hot water chamber (4) and has a constant temperature water outlet (5); the cold water chamber (3) has a cold water inlet (6) and a cold water outlet (7); the hot water chamber (4) has a hot water inlet (8); in, The water mixing valve shaft (11) is movable to adjust the communication areas between the cold water chamber (3) and the hot water chamber (4) and the water mixing chamber respectively, and the water mixing channel (18) is connected to the constant temperature water outlet (5); The constant temperature water outlet (5) is connected to a constant temperature water outlet pipe section (29), and a water mixing sensor (30) is provided at a position in the constant temperature water outlet pipe section (29) away from the constant temperature water outlet (5).

16. A water heater, characterized in that: It comprises a water heater body having a cold water interface and a hot water interface and a thermostatic mixing valve according to any one of claims 13 to 15, wherein: The cold water outlet (7) is connected to the cold water interface; The hot water inlet (8) is connected to the hot water interface.

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