Frost crack prevention water mixer

Abstract

The utility model discloses a frost crack prevention water mixer which comprises an outer shell, a water mixing channel shell and a frost crack prevention mechanism, the water mixing channel shell is arranged in the outer shell, the water mixing channel shell is provided with a cold water inlet, a hot water inlet, a water mixing cavity and a plurality of water outlets, and the cold water inlet and the hot water inlet are arranged on the same side of the water mixing channel shell. The cold water inlet, the hot water inlet and the plurality of water outlets are all communicated with the water mixing cavity; the frost crack prevention mechanism comprises a heat preservation part which is arranged between the shell and the water mixing channel shell, and the heat preservation part wraps at least one part of the cold water inlet, the hot water inlet and the water mixing channel shell. According to the frost crack prevention water mixer, the freezing sequence of water in different areas in the water mixing channel shell can be guided through local heat preservation, the water inlet end is finally frozen, pressure caused by freezing expansion is buffered, and the possibility that the water mixing channel shell and the valve are cracked and damaged is reduced.

Description

Technical Field

[0001] This utility model relates to the field of bathroom accessories technology, and in particular to an antifreeze and crack-resistant mixing valve. Background Technology

[0002] A mixing valve is a common bathroom accessory, primarily used to mix cold and hot water, regulate water temperature, and distribute it to different water outlets. The mixing valve typically contains a certain amount of water. In cold winter conditions, this water gradually freezes. As the water freezes, it expands, exerting an outward pressure on the inner wall of the mixing valve. This can cause the mixing valve and valve to crack and become unusable, affecting normal user experience. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an anti-freezing and cracking mixing device that can guide the order in which water freezes, ensuring that the inlet end freezes last, thereby reducing the possibility of cracking damage.

[0004] According to a first aspect of the present invention, an anti-freeze and crack mixing device includes a housing, a mixing channel housing, and an anti-freeze and crack mechanism. The mixing channel housing is disposed inside the housing and has a cold water inlet, a hot water inlet, a mixing chamber, and a plurality of outlets. The cold water inlet and the hot water inlet are disposed on the same side of the mixing channel housing, and the cold water inlet, the hot water inlet, and the plurality of outlets are all connected to the mixing chamber. The anti-freeze and crack mechanism includes a heat insulation element disposed between the housing and the mixing channel housing, and the heat insulation element covers at least a portion of the cold water inlet, the hot water inlet, and the mixing channel housing.

[0005] The anti-freeze-crack mixing valve according to an embodiment of this utility model has at least the following beneficial effects: Both the cold water inlet and the hot water inlet are arranged on the same side of the mixing channel housing. Cold water and hot water can enter the mixing chamber through the cold water inlet and the hot water inlet respectively, facilitating water temperature adjustment. The adjusted water can be output through the outlet. An insulation element is arranged between the outer shell and the mixing channel housing, and the insulation element covers at least a portion of the cold water inlet, the hot water inlet, and the mixing channel housing, slowing down the water temperature changes at the cold water inlet and the hot water inlet. This guides the order in which water freezes, allowing the expansion volume of ice to be absorbed through the cold water inlet and the hot water inlet, reducing the direct impact of ice expansion pressure on the mixing channel housing and valve, thereby reducing the possibility of freeze-crack damage and improving reliability.

[0006] According to some embodiments of the present invention, the wall thickness of the mixing channel shell gradually increases towards the cold water inlet or the hot water inlet.

[0007] According to some embodiments of the present invention, the thickness of the insulation component gradually increases towards the cold water inlet or the hot water inlet.

[0008] According to some embodiments of the present invention, the mixing channel shell is provided with a pressure relief port, the pressure relief port is connected to the mixing chamber, and the pressure relief port is located inside the insulation component. The anti-freezing and cracking mechanism also includes a pressure relief component, which is arranged in the pressure relief port and is used to buffer the pressure of ice expansion.

[0009] According to some embodiments of the present invention, the pressure relief assembly includes a fixed block, a slider, and an elastic element. The fixed block is fixedly connected to the pressure relief port, the slider is slidably connected to the pressure relief port, and the slider and the inner wall of the pressure relief port are sealed together. The two ends of the elastic element abut against the fixed block and the slider respectively, and the elastic element is used to drive the slider to move away from the fixed block.

[0010] According to some embodiments of the present invention, the elastic element is configured as an air bladder, and the outer contour of the air bladder abuts against the inner wall of the pressure relief port.

[0011] According to some embodiments of the present invention, the fixing block is provided with a guide hole, the slider is connected to a guide rod, the guide rod is slidably connected to the guide hole, and a limit plate is provided at the end of the guide rod away from the slider, the limit plate being able to abut against the fixing block.

[0012] According to some embodiments of this utility model, the guide rod and the slider are threadedly connected, and the guide rod is also threadedly connected to a nut, which abuts against the slider.

[0013] According to some embodiments of the present invention, a sealing ring is fixedly connected to the side wall of the slider, and the sealing ring abuts against the inner side wall of the pressure relief port.

[0014] According to some embodiments of the present invention, the side wall of the slider is provided with an installation groove, and the sealing ring is arranged in the installation groove.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a schematic diagram of the concealed outer shell of the antifreeze and crack-resistant mixing device according to an embodiment of the present utility model;

[0018] Figure 2 This is a cross-sectional view of the antifreeze and crack-resistant mixing device according to an embodiment of the present utility model;

[0019] Figure 3 This is another cross-sectional view of the antifreeze and crack-resistant mixing device according to an embodiment of the present utility model;

[0020] Figure 4 for Figure 3 Enlarged view of a portion at point A;

[0021] Figure 5 This is a schematic diagram of the airbag connection of the antifreeze and crack mixing device according to an embodiment of the present utility model.

[0022] Figure label:

[0023] Casing 100;

[0024] 200 housing, 210 cold water inlet, 220 hot water inlet, 230 mixing chamber, 240 outlet, 250 pressure relief port;

[0025] Anti-freezing and cracking mechanism 300, heat insulation component 310, pressure relief component 320, fixing block 330, guide hole 331, slider 340, guide rod 341, limit plate 342, nut 343, sealing ring 344, mounting groove 345, elastic component 350, airbag 351. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] Understandably, referring to Figures 1 to 3 The present invention discloses an anti-freezing and cracking mixing device, comprising a housing 100, a mixing channel housing 200, and an anti-freezing and cracking mechanism 300. The mixing channel housing 200 is arranged inside the housing 100 and is provided with a cold water inlet 210, a hot water inlet 220, a mixing chamber 230, and several outlets 240. The cold water inlet 210 and the hot water inlet 220 are arranged on the same side of the mixing channel housing 200, and the cold water inlet 210, the hot water inlet 220, and the several outlets 240 are all connected to the mixing chamber 230. The anti-freezing and cracking mechanism 300 includes a heat insulation element 310, which is arranged between the housing 100 and the mixing channel housing 200, and the heat insulation element 310 covers at least a portion of the cold water inlet 210, the hot water inlet 220, and the mixing channel housing 200.

[0031] The cold water inlet 210 and the hot water inlet 220 are both located on the same side of the mixing channel housing 200. Cold water and hot water can enter the mixing chamber 230 through the cold water inlet 210 and the hot water inlet 220 respectively, to facilitate water temperature adjustment. The adjusted water can be output through the outlet 240. The insulation component 310 is arranged between the outer shell 100 and the mixing channel housing 200, and the insulation component 310 covers at least a portion of the cold water inlet 210, the hot water inlet 220, and the mixing channel housing 200, so as to slow down the water temperature change at the cold water inlet 210 and the hot water inlet 220. This can guide the order of water freezing, so that the expansion volume of ice can be absorbed by the cold water inlet 210 and the hot water inlet 220, reducing the direct effect of the ice expansion pressure on the mixing channel housing 200 and the valve, thereby reducing the possibility of freezing and cracking damage and improving reliability.

[0032] The insulation component 310 houses at least a portion of the cold water inlet 210, hot water inlet 220, and mixing channel housing 200. This insulation component slows down temperature changes at the cold water inlet 210 and hot water inlet 220, allowing water inside the mixing channel housing 200 to gradually freeze from the outlet 240 towards the cold water inlet 210 and hot water inlet 220 when the ambient temperature drops below freezing. This guides the freezing sequence of the water. Furthermore, the temperature of the hot water inlet 220 is higher than the ambient temperature. The ambient temperature allows the heat emitted from the hot water inlet 220 to be retained within the insulation component 310, further slowing down the rate of temperature drop at the cold water inlet 210 and the hot water inlet 220. Through localized insulation, the freezing sequence of water inside the mixing channel housing 200 can be stabilized, allowing the volume expansion of ice to be released from the cold water inlet 210 and the hot water inlet 220, enabling water to flow back to the cold water inlet 210 and the hot water inlet 220, thereby reducing the pressure inside the mixing channel housing 200 and lowering the possibility of freezing and cracking.

[0033] It should be noted that the insulation component 310 can be made of expandable polystyrene foam, polyurethane foam, fiberglass, rock wool, etc., or it can be a closed air chamber formed between the outer shell 100 and the mixing channel shell 200. No limitation is made here.

[0034] A valve (not shown in the attached figure) is connected between the mixing chamber 230 and the outlet 240, which can control the opening or closing of the outlet 240.

[0035] Understandably, referring to Figure 3 The wall thickness of the mixing channel housing 200 gradually increases towards the cold water inlet 210 or the hot water inlet 220. This ensures that the heat transfer path of the water inside the mixing channel housing 200 near the cold water inlet 210 or the hot water inlet 220 is greater than that of the water outside the mixing channel housing 200. This guides the freezing sequence of the water inside the mixing channel housing 200, allowing the expansion volume of the ice to be absorbed through the cold water inlet 210 and the hot water inlet 220, reducing the possibility of the mixing channel housing 200 freezing and cracking, and improving reliability.

[0036] In addition, the thicker wall near the cold water inlet 210 or the hot water inlet 220 provides stronger structural support, can withstand greater expansion pressure, stabilizes the structure of the mixing channel housing 200, reduces the possibility of damage to the mixing channel housing 200, and improves reliability.

[0037] Understandably, referring to Figure 3The thickness of the insulation component 310 gradually increases towards the cold water inlet 210 or the hot water inlet 220. By setting the thickness of the insulation component 310 to gradually increase towards the cold water inlet 210 or the hot water inlet 220, the insulation effect of the insulation component 310 is gradually enhanced towards the cold water inlet 210 or the hot water inlet 220. This can further guide the freezing sequence of water in the mixing channel housing 200, allowing the expansion volume of ice to be absorbed through the cold water inlet 210 and the hot water inlet 220, reducing the possibility of the mixing channel housing 200 freezing and cracking, and improving reliability.

[0038] Understandably, referring to Figure 3 and Figure 4 The mixing channel housing 200 has a pressure relief port 250, which communicates with the mixing chamber 230 and is located within the insulation component 310. The anti-freezing and cracking mechanism 300 also includes a pressure relief component 320, which is arranged in the pressure relief port 250 and is used to buffer the expansion pressure of ice. By setting the pressure relief port 250 within the insulation component 310 and arranging the pressure relief component 320 within the pressure relief port 250, the water at the pressure relief port 250 can be frozen last, allowing the pressure relief port 250 to absorb more of the ice expansion volume, reducing the pressure at the cold water inlet 210 and the hot water inlet 220, which helps to reduce the internal pressure of the mixing channel housing 200, thereby reducing the possibility of the mixing channel housing 200 cracking and improving reliability.

[0039] It should be noted that the number of pressure relief ports 250 is set to one or more, and the pressure relief components 320 correspond one-to-one with the pressure relief ports 250. By setting multiple pressure relief ports 250 and multiple pressure relief components 320, the pressure relief capacity of the mixer can be enhanced, more of the expansion volume of ice can be absorbed, and the possibility of cracking damage can be reduced.

[0040] Specifically, refer to Figure 3 and Figure 4The pressure relief assembly 320 includes a fixed block 330, a slider 340, and an elastic element 350. The fixed block 330 is fixedly connected to the pressure relief port 250, and the slider 340 is slidably connected to the pressure relief port 250, with a sealed connection between the slider 340 and the inner wall of the pressure relief port 250. The two ends of the elastic element 350 abut against the fixed block 330 and the slider 340 respectively, and the elastic element 350 drives the slider 340 to move away from the fixed block 330. The fixed block 330 is fixedly connected to the pressure relief port 250, and the slider 340 is slidably connected to the pressure relief port 250, maintaining a seal between the slider 340 and the inner wall of the pressure relief port 250. When the low winter temperature causes the inside of the mixing channel housing 200 to freeze and expand, the pressure generated by the ice expansion acts on the slider 340, pushing the slider 340 to overcome the elastic force of the elastic element 350 and slide towards the fixed block 330, thereby increasing the volume of the pressure relief port 250 to absorb the expansion volume of the ice, release the pressure in time, avoid excessive pressure causing the mixing channel housing 200 to crack, and reduce the risk of the mixer freezing and cracking.

[0041] It should be noted that the elastic element 350 can be a compression spring or an elastic element made of rubber, silicone, or other materials, and is not limited here.

[0042] Specifically, refer to Figure 5 The elastic element 350 is configured as an air bladder 351, with its outer contour abutting against the inner wall of the pressure relief port 250. By configuring the elastic element 350 as an air bladder 351, when the water inside the mixing channel housing 200 freezes and expands, generating pressure, the air bladder 351 can evenly bear the pressure and undergo elastic deformation, thereby effectively buffering the pressure from the freezing expansion, reducing the pressure on the mixing channel housing 200, preventing the mixing channel housing 200 from cracking due to excessive pressure, and improving the anti-freezing and cracking capability of the mixer. Moreover, the outer contour of the air bladder 351 abutting against the inner wall of the pressure relief port 250 stabilizes the position of the air bladder 351, thereby balancing the force on the slider 340 and forming a reliable seal with the inner wall of the pressure relief port 250, reducing the possibility of the slider 340 tilting or shifting, preventing water leakage inside the mixer, and ensuring the normal operation of the mixer.

[0043] Specifically, refer to Figure 3 and Figure 4The fixed block 330 has a guide hole 331, and the slider 340 is connected to a guide rod 341. The guide rod 341 is slidably connected to the guide hole 331. A limit plate 342 is provided at the end of the guide rod 341 away from the slider 340, and the limit plate 342 can abut against the fixed block 330. By setting the guide rod 341 to be slidably connected to the guide hole 331, the slider 340 can slide stably along the length direction of the guide rod 341, so that the slider 340 can move accurately in a predetermined direction during the pressure relief process. This avoids the slider 340 from deviating or shaking under pressure, improves the reliability of the pressure relief assembly 320, and enhances the connection stability between the slider 340 and the inner wall of the pressure relief port 250, reduces the risk of seal failure, and further ensures the sealing performance of the mixer under normal conditions, preventing water leakage.

[0044] In addition, the limiting plate 342 is connected to the end of the guide rod 341 away from the slider 340, and the elastic element 350 can drive the limiting plate 342 to abut against the fixed block 330, thereby limiting the movement stroke of the slider 340 and improving the sliding stability of the slider 340.

[0045] Specifically, refer to Figure 3 and Figure 4 The guide rod 341 and the slider 340 are threadedly connected, and the guide rod 341 is also threadedly connected to a nut 343, which abuts against the slider 340. By setting the guide rod 341 and the slider 340 to be threadedly connected, the slider 340 can move along the axial direction of the guide rod 341 when the guide rod 341 is rotated. This allows adjustment of the distance between the fixed block 330 and the slider 340, facilitating adjustment of the pressure relief sensitivity of the pressure relief assembly 320, and enabling the mixer to better adapt to different operating environments and pressure conditions.

[0046] In addition, the nut 343 and the guide rod 341 are threaded together, and the nut 343 abuts against the slider 340, so that the nut 343 can lock the guide rod 341 on the slider 340, preventing the guide rod 341 from loosening and improving the stability of the connection.

[0047] Specifically, refer to Figure 3 and Figure 4 A sealing ring 344 is fixedly connected to the side wall of the slider 340, and the sealing ring 344 abuts against the inner side wall of the pressure relief port 250. The sealing ring 344 is fixedly connected to the side wall of the slider 340 so that the sealing ring 344 can abut against the inner side wall of the pressure relief port 250, thereby maintaining a seal between the slider 340 and the inner side wall of the pressure relief port 250, effectively preventing water leakage from the pressure relief port 250, ensuring the normal operation of the mixer, and improving reliability.

[0048] It should be noted that the sealing ring 344 can be an elastic element such as a rubber part or a silicone part, to absorb the gap between the slider 340 and the inner wall of the pressure relief port 250, and reduce the possibility of water leakage.

[0049] Specifically, refer to Figure 3 and Figure 4 The slider 340 has a mounting groove 345 on its side wall, and the sealing ring 344 is arranged in the mounting groove 345. The mounting groove 345 is located on the side wall of the slider 340. By setting the sealing ring 344 in the mounting groove 345, the sealing ring 344 can be stably placed on the slider 340. The mounting groove 345 provides axial support for the sealing ring 344, reducing the possibility of the sealing ring 344 loosening and falling off, and ensuring that the sealing ring 344 always maintains a tight contact with the inner side wall of the pressure relief port 250, thereby improving the reliability and stability of the seal.

[0050] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A freeze-proof mixing water device characterized by comprising: include: shell; A mixing channel housing is arranged inside the outer shell. The mixing channel housing is provided with a cold water inlet, a hot water inlet, a mixing chamber, and several outlets. The cold water inlet and the hot water inlet are arranged on the same side of the mixing channel housing. The cold water inlet, the hot water inlet, and the several outlets are all connected to the mixing chamber. The anti-freezing and cracking mechanism includes an insulation element disposed between the outer shell and the mixing channel shell, and the insulation element covers at least a portion of the cold water inlet, the hot water inlet and the mixing channel shell.

2. The freeze-proof mixing water heater according to claim 1, wherein The wall thickness of the mixing channel shell gradually increases towards the cold water inlet or the hot water inlet.

3. The freeze-proof mixing water heater according to claim 1 or 2, characterized by The thickness of the insulation component gradually increases towards the cold water inlet or the hot water inlet.

4. The freeze-proof mixing water heater according to claim 1, wherein The mixing channel shell is provided with a pressure relief port, which is connected to the mixing chamber and located inside the insulation component. The anti-freezing and cracking mechanism also includes a pressure relief component, which is arranged in the pressure relief port and is used to buffer the pressure of ice expansion.

5. The freeze-proof mixing water heater according to claim 4, wherein The pressure relief assembly includes a fixed block, a slider, and an elastic element. The fixed block is fixedly connected to the pressure relief port, the slider is slidably connected to the pressure relief port, and the slider and the inner wall of the pressure relief port are sealed together. The two ends of the elastic element abut against the fixed block and the slider, respectively, and the elastic element is used to drive the slider to move away from the fixed block.

6. The freeze-proof mixing water heater according to claim 5, wherein The elastic element is configured as an air bladder, and the outer contour of the air bladder abuts against the inner wall of the pressure relief port.

7. The freeze-proof mixing water heater according to claim 5, wherein The fixed block has a guide hole, the slider is connected to a guide rod, the guide rod is slidably connected to the guide hole, and a limit plate is provided at the end of the guide rod away from the slider, the limit plate can abut against the fixed block.

8. The freeze-proof hydronic mixer of claim 7, wherein, The guide rod and the slider are threaded together, and the guide rod is also threaded with a nut, which abuts against the slider.

9. The freeze-proof hydronic mixer of claim 5, wherein, A sealing ring is fixedly connected to the side wall of the slider, and the sealing ring abuts against the inner side wall of the pressure relief port.

10. The freeze-proof hydronic mixer of claim 9, wherein, The slider has a mounting groove on its side wall, and the sealing ring is arranged in the mounting groove.

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