Thermostatic mixer components and their manufacturing methods

Abstract

The present invention relates to a thermostatic mixer accessory (1), comprising at least: - an accessory housing (2) having a first inlet (3) for a first liquid and a second inlet (4) for a second liquid; - a thermostatic mixer (5) for mixing the first liquid and the second liquid into a mixed water; - a first liquid channel (6) by means of which the first liquid can be guided from the first inlet (3) to the thermostatic mixer (5); and - a second liquid channel (7) by means of which the second liquid can be guided from the second inlet (4) to the thermostatic mixer (5), wherein the second liquid channel (7) is at least partially surrounded by an annular member (8) that prevents the second liquid from contacting the accessory housing (2), and the annular member is at least partially made of silicone resin. Furthermore, a method for manufacturing such a thermostatic mixing accessory (1) is also proposed.

Description

Technical Field

[0001] This invention relates to a thermostatic mixer accessory and its manufacturing method. The thermostatic mixer accessory enables the provision of mixed water with a desired mixing temperature, particularly in handwashing sinks, kitchen sinks, showers, and / or bathtubs. Background Technology

[0002] Thermostatic mixer fittings typically have a housing containing complex liquid channels for hot and cold water. Hot and cold water are supplied to the thermostatic mixer via these channels. As the water flows through these channels, the hot and / or cold water comes into contact with the housing in at least a portion of the area, necessitating that the housing be made of a material suitable for drinking water, such as brass. However, the manufacture of such a housing is associated with high costs. Summary of the Invention

[0003] Therefore, the object of the present invention is to at least partially solve the problems described with reference to the prior art, and in particular to provide a thermostatic mixer accessory in which contact between the liquid and the accessory housing is avoided, allowing the accessory housing to be made of a low-cost material. Furthermore, a method for manufacturing a thermostatic mixer accessory is also provided, by which contact between the liquid and the accessory housing of the thermostatic mixer accessory is avoided.

[0004] These objectives are achieved by the thermostatic mixer fittings and methods according to the features of the independent claims. Other advantageous embodiments of the invention are given in the dependent claims. It should be noted that the features individually listed in the dependent claims can be combined with each other in any technically meaningful manner and define other embodiments of the invention. Furthermore, the features given in the claims are further detailed and explained in the specification, and other preferred embodiments of the invention are shown.

[0005] Therefore, a thermostatic mixer accessory is proposed, which has at least the following features:

[0006] - Fitting housing, the fitting housing having a first inlet for a first liquid and a second inlet for a second liquid.

[0007] - A thermostatic mixer used to mix a first liquid and a second liquid into a mixed water;

[0008] - A first liquid channel, through which a first liquid is guided from a first inlet to a thermostatic mixer; and

[0009] - A second liquid channel, by means of which a second liquid is guided from a second inlet to a thermostatic mixer, wherein the second liquid channel is at least partially surrounded by an annular member that prevents the second liquid from contacting the fitting housing, the annular member being at least partially made of silicone resin.

[0010] Thermostatic mixer fittings are particularly used to provide mixed water to sinks, basins, showers, or bathtubs on demand. For this purpose, a shower, such as a handheld shower or overhead shower, can be connected to the thermostatic mixer fitting via flexible hoses and / or pipes. Furthermore, the thermostatic mixer fitting has a thermostatic mixer that can mix a first liquid having a first temperature (e.g., hot water at a hot water temperature) and a second liquid having a second temperature (e.g., cold water at a cold water temperature) to form mixed water with a desired temperature. The mixed water temperature can be adjusted, in particular, by means of an adjusting element of the thermostatic mixer, such as an expansion material element. The first temperature, or hot water temperature, is particularly high at 90°C, preferably from 25°C to 90°C, especially preferably from 55°C to 65°C, and / or the second temperature, or cold water temperature, is particularly high at 25°C (degrees Celsius), preferably from 1°C to 25°C, especially preferably from 5°C to 20°C. The thermostatic mixer is particularly arranged in a housing of a thermostatic mixer accessory, which allows the thermostatic mixer accessory to be securely fastened to a carrier, such as a wall. The housing has a first inlet for a first liquid and a second inlet for a second liquid. A delivery line or pipe for the first liquid can be connected to the first inlet, and / or a delivery line or pipe for the second liquid can be connected to the second inlet.

[0011] A first liquid can be supplied to the thermostatic mixer from a first inlet via a first liquid passage. The first liquid passage is at least partially constructed in a liquid guiding structure, through which the first liquid can be supplied to the thermostatic mixer, particularly without contacting the fitting housing. The liquid guiding structure can be at least partially constructed in a cylindrical and / or tubular shape. Furthermore, the plastic guide portion can have external ribs, which minimize contact between the liquid guiding structure and the fitting housing. Additionally, the plastic guide portion can be at least partially made of plastic and / or constructed as a plastic injection-molded part. The liquid guiding structure, in the manufacture of the thermostatic mixing valve, can be arranged in or inserted into a mounting cavity of the fitting housing. The mounting cavity can, for example, be (substantially) constructed in a cylindrical shape and / or extend along the longitudinal axis of the fitting housing.

[0012] The second liquid can be supplied to the thermostatic mixer from the second inlet via the second liquid channel. The second liquid channel is specifically constructed within the mounting cavity of the fitting housing. Furthermore, the first and second liquid channels can be configured such that they do not intersect within the fitting housing. Additionally, the second liquid channel is at least partially surrounded by an annular member that prevents the second liquid from contacting the fitting housing. The annular member can have a length, for example, from 10 mm to 100 mm, particularly parallel to the longitudinal axis of the fitting housing, and / or a wall thickness, for example, from 0.5 mm to 5 mm, particularly perpendicular to the longitudinal axis of the fitting housing. Furthermore, the annular member can have an (outer) diameter, for example, from 30 mm to 80 mm. Furthermore, the annular member can be at least partially deformable, flexible, and / or elastic. The annular member is at least partially made of silicone resin. The liquid guiding structure, the thermostatic mixer, and / or the annular member can be arranged within the mounting cavity of the fitting housing in such a way that they are not fixedly connected to each other. This allows the liquid guiding structure, the thermostatic mixer, and / or the annular member to expand differently due to different temperatures without damaging each other. The ring-shaped component allows the accessory housing to be made of any and / or low-cost material, such as zinc alloy. Thus, the accessory housing can, for example, be at least partially made of zinc die casting.

[0013] The outer circumferential surface of the annular component can contact the inner circumferential surface of the fitting housing. This specifically means that the annular component extends 360° along the inner circumferential surface of the fitting housing. Furthermore, this means that the entire outer circumferential surface of the annular component contacts the inner circumferential surface of the fitting housing.

[0014] The second liquid channel can be at least partially constructed as a ring.

[0015] The second liquid channel may extend at least partially around the thermostatic mixer. This may specifically mean that the thermostatic mixer internally limits the second liquid channel.

[0016] The thermostatic mixer can extend through the annular component. In particular, the thermostatic mixer can extend completely through the annular component. Furthermore, the thermostatic mixer and the annular component can be arranged (substantially) concentrically with each other.

[0017] An inlet pipe can be constructed on the outer circumferential surface of the annular component, through which the second liquid can flow into the second liquid channel. The annular component and the inlet pipe are particularly integrally formed. Furthermore, the inlet pipe can extend radially outward and / or perpendicular to the longitudinal axis of the fitting housing. For example, the inlet pipe can have a length of 1 mm to 20 mm and / or an inner diameter of 5 mm to 40 mm. Additionally, the inlet pipe can have a wall thickness of, for example, 0.5 mm to 5 mm.

[0018] The inlet pipe can extend at least partially into the second inlet.

[0019] The inlet pipe may have a circumferential flange. The circumferential flange may be formed, in particular, at the end of the longitudinal side of the inlet pipe and / or on the outer surface of the inlet pipe. Furthermore, the circumferential flange (especially relative to the inlet pipe or its longitudinal axis) may extend radially outward. The circumferential flange may, for example, be clamped between the end face of the second inlet connector and the fitting housing in the second inlet. This ensures that the annular component does not detach from the fitting housing.

[0020] The annular member can be at least partially elastically deformable to be arranged within the fitting housing. This is particularly necessary so that the annular member can move through the assembly opening of the fitting housing into the mounting cavity of the fitting housing. In particular, the annular member can be at least partially elastically deformed or compressed in the radial direction. This can especially mean that the outer diameter of the annular member can be at least partially reduced during the arrangement of the annular member within the fitting housing. Furthermore, for example, when the inlet pipe reaches or aligns with the second inlet of the fitting housing while the annular member is arranged within the fitting housing, the annular member can, in particular, automatically return to its original shape.

[0021] The ring-shaped component can be injection molded into the accessory housing. This can be achieved, for example, by using an injection molding method.

[0022] The annular component may have at least one sealing lip. Specifically, the annular component may have sealing lips at each of its two longitudinal ends. At least one sealing lip is particularly formed on the inner surface of the annular component. Furthermore, the at least one sealing lip may be configured, for example, as an elongated and / or rounded thickened portion. Furthermore, the at least one sealing lip may be configured as a flange. Furthermore, the at least one sealing lip may extend in the peripheral direction of the annular component and / or around the longitudinal axis. Furthermore, the at least one sealing lip may be integrally formed with the annular component. The at least one sealing lip can particularly (liquidally) seal the gap between the annular component and the thermostatic mixer. Thus, by using at least one annular component, a separate seal, such as an O-ring, can be avoided, thereby reducing the assembly workload of the thermostatic mixer fittings.

[0023] According to another aspect, a method for manufacturing thermostatic mixer components is also proposed, the method comprising at least the following steps:

[0024] a) Provide a fitting housing having a first inlet for a first liquid and a second inlet for a second liquid;

[0025] b) A liquid guiding structure having a first liquid channel for a first liquid is arranged in the fitting housing;

[0026] c) Deform the annular element and arrange the deformed annular element in the fitting housing, or inject the annular element into the fitting housing such that the annular element at least partially surrounds the second liquid channel for the second liquid and prevents the second liquid from contacting the fitting housing, wherein the annular element is at least partially made of silicone resin.

[0027] d) A thermostatic mixer for mixing the first liquid and the second liquid into a mixed water is arranged in the housing of the fitting, such that the first liquid can be delivered to the thermostatic mixer via a first liquid channel and the second liquid via a second liquid channel.

[0028] Steps b) through d) can be performed sequentially or at least partially simultaneously. Furthermore, steps b) through d) can be performed in different orders. Further details regarding the method can be found in the description of the thermostatic mixer accessories. Attached Figure Description

[0029] The invention and its technical environment are described in more detail below with reference to the accompanying drawings. It should be noted that the drawings illustrate particularly preferred embodiments of the invention, but the embodiments are not limited thereto. The drawings schematically illustrate, for example:

[0030] Figure 1 A longitudinal cross-sectional view of the thermostatic mixer components is shown;

[0031] Figure 2 A longitudinal cross-sectional view of the liquid guiding structure of the thermostatic mixer accessory is shown;

[0032] Figure 3 A longitudinal cross-sectional view of a thermostat mixer is shown, including the thermostat mixer accessories.

[0033] Figure 4 A partial view of the housing of the thermostatic mixer fitting with a ring-shaped part, shown in the form of a three-dimensional longitudinal sectional view;

[0034] Figure 5 A partial view of the housing of the thermostatic mixer fitting with an annular component is shown in the form of a three-dimensional longitudinal sectional view. Detailed Implementation

[0035] Figure 1A longitudinal cross-sectional view of a thermostatic mixer accessory 1 is shown. The thermostatic mixer accessory 1 includes an accessory housing 2, which has a first inlet 3 for a first liquid and a second inlet 4 for a second liquid. The first liquid is hot water, and the second liquid is cold water. A thermostatic mixer 5 is arranged within the accessory housing 2, and is configured as a thermostatic mixing cylinder. The first inlet 3 is connected to the thermostatic mixer 5 via a first liquid channel 6, and the second inlet 4 is connected to the thermostatic mixer via a second liquid channel 7, allowing the first liquid to be supplied to the thermostatic mixer 5 via the first liquid channel 6 and the second liquid to be supplied to the thermostatic mixer via the second liquid channel 7. The flow directions of the first liquid in the first liquid channel 6 and the second liquid in the second liquid channel 7 are as follows: Figure 1 The first liquid channel 6 is annularly constructed within the liquid guiding structure 12 and extends (substantially) parallel to the longitudinal axis 14 of the fitting housing 2. The liquid guiding structure 12 is a plastic injection-molded part. Furthermore, the liquid guiding structure 12 has multiple ribs 16 on its outer surface 15, which reduce the contact area between the liquid guiding structure 12 and the fitting housing 2. Air cushions are constructed between the ribs 16, creating thermal insulation between the liquid guiding structure 12 and the fitting housing 2. The second liquid channel 7 extends annularly around the thermostatic mixer 5 and is surrounded by an annular member 8, which prevents the second liquid from contacting the fitting housing 2 in the area of ​​the second liquid channel 7. The annular member 8 and the thermostatic mixer 5 are arranged concentrically with the longitudinal axis 14 of the fitting housing 2. Furthermore, the annular member 8 contacts the inner circumferential surface 10 of the mounting cavity 17 of the fitting housing 2 using its outer circumferential surface 9.

[0036] Thermostatic mixer 5 allows a first liquid and a second liquid to be mixed into a mixed water at a mixing temperature. Thermostatic mixer 5 has a housing 19 with a head 18, the housing being (generally) tubular and extending along the longitudinal axis 14 of the thermostatic mixer 5 or accessory housing 2. At least one first inlet 20 for the first liquid and at least one inlet 21 for the second liquid are constructed in the head 18. The embodiment 5 of the thermostatic mixer shown here has multiple first inlets 20 and second inlets 21, which are arranged circumferentially around the longitudinal axis 14 in the head 18. The first liquid can be guided into the mixing chamber 22 of the thermostatic mixer 5 via the first inlet 20 and the second liquid via the inlet 21. Therefore, the mixing chamber 22 is arranged downstream of the first inlet 20 and the second inlet 21 in the flow direction of the first liquid and the second liquid. In the mixing chamber 22, the first liquid and the second liquid can be mixed into a mixed water at a mixing temperature. A mixing chamber 22 has a mixing water outlet 23 located at the rear in the direction of water flow. Through this outlet, the mixed water at the required temperature exits the thermostatic mixer 5. The mixed water is conveyed from the mixing water outlet 23 to the mixing water channel 24 of the liquid guide structure 12 to the valve 13. The valve body 25 controls the discharge of the mixed water from the thermostatic mixer fitting 1. The mixing water channel 24 extends parallel to the longitudinal axis 14 through the first liquid channel 6. The flow direction of the mixed water is... Figure 1 The corresponding arrows are used to indicate this.

[0037] The temperature of the mixed water is determined by the mixing ratio between the first liquid and the second liquid. To adjust the mixed water temperature, the thermostatic mixer 5 has an adjusting element 26. The adjusting element 26 includes a control handle 27, which is connected to the adjusting nut 28 of the overload unit 29 in a torsion-resistant manner. The control handle 27 can thus rotate together with the adjusting nut 28 about a rotation axis 30, which is aligned with the longitudinal axis 14. When the control handle 27 is rotated, the spring sleeve 31 is adjusted in the axial direction 32, i.e., parallel to the longitudinal axis 14. The movement of the spring sleeve 31 in the axial direction 32 is transmitted to the adjusting element 33, which in turn causes the adjusting slider 34 to move in the axial direction 32. Depending on the position of the adjusting slider 34 in the axial direction 32, the adjusting slider 34 can alternately open and close the first adjusting gap 35 for the first liquid and the second adjusting gap 36 for the second liquid. Depending on the position of the adjusting slider 34, corresponding amounts of the first and second liquids are guided into the thermostatic mixer 5 through the first adjusting gap 35 and the second adjusting gap 36, thereby mixing to form a mixed water with a corresponding mixed water temperature. The adjusting element 33 may be at least partially made of a thermally expandable material. Thus, the adjusting element 33 expands, particularly along the axial direction 32, when heated, and contracts, particularly along the axial direction 32, when cooled. Therefore, the adjusting element 33 can maintain the mixed water at a (substantially) constant mixed water temperature. For example, if too much of the first liquid (hot water) or too little of the second liquid (cold water) flows into the thermostatic mixer 5, the adjusting element 33 is heated and expands, thereby adjusting the adjusting slider 34 along the axial direction 32 toward the mixed water outlet 23, causing the first adjusting gap 35 to decrease and the second adjusting gap 36 to increase. Therefore, less of the first liquid and more of the second liquid flow into the mixing chamber 22. For example, if too much of the second liquid (cold water) or too little of the first liquid (hot water) flows into the thermostatic mixer 5, the regulating element 33 contracts, thereby causing the regulating slider 34 to move away from the mixed water outlet 23, increasing the first regulating gap 35 and decreasing the second regulating gap 36. Therefore, more of the first liquid and less of the second liquid flow into the mixing chamber 22.

[0038] Figure 2 It shows Figure 1 The diagram shows a longitudinal cross-sectional view of the liquid guiding structure 12 of the thermostatic mixer accessory 1. It is particularly evident here that the mixing water channel 24 is tubular and extends parallel to the longitudinal axis 14 through the first liquid channel 6 to the valve body 25 of the valve 13. The liquid guiding structure 12 has a receiving portion 37 at its longitudinal end. Figure 1 and Figure 3 The thermostatic mixer shown can be inserted into the receiving part 37 parallel to the longitudinal axis 14.

[0039] Figure 3A longitudinal section of the thermostatic mixer 5 is shown. The housing 19 here has an invisible opening for a first liquid and an opening 38 for a second liquid. The opening 38 extends perpendicularly to the longitudinal axis 14 into the thermostatic mixer 5.

[0040] Figure 4 A longitudinal cross-sectional view of the end 39 of the fitting housing 2 on the first longitudinal side is shown in the region of the first variant of the annular member 8. The annular member 8 has a length 40 parallel to the longitudinal axis 14 and a wall thickness 41 perpendicular to the longitudinal axis. Furthermore, the annular member 8 has a water inlet pipe 11 that extends radially outward from the outer peripheral surface 9 of the annular member 8 or perpendicularly to the longitudinal axis 14 into the second inlet 4 of the fitting housing 2. For manufacturing purposes... Figure 1 The thermostatic mixer accessory shown can be arranged in the mounting cavity 17 of the accessory housing 2 via the mounting opening 42 at the end 39 of the first longitudinal side of the accessory housing 2. The annular member 8 is designed to be elastically deformable. For this purpose, the annular member 8 is made of silicone resin. Thus, a portion of the annular member 8 can be radially inwardly compressed before it is arranged in the accessory housing 2, and then pushed into the accessory housing 2 in an elastically deformable state via the mounting opening 42. Once the water inlet pipe 11 of the annular member 8 reaches the second inlet 4, the water inlet pipe 11 locks into the second inlet 4, causing the annular member 8 to return to its original shape. Thus, the annular member 8 is fixed to prevent it from falling out of the accessory housing 2. Subsequently, Figure 2 The liquid guiding structure 12 shown can be arranged in the mounting cavity 17 of the fitting housing 2 via a second longitudinal end opposite to the end 39 on the first longitudinal side. The liquid guiding structure 12 provides Figure 1 The first inlet connector 43 and shower connector 44 of the first inlet 3 shown are fixed. Then, the... Figure 3 The thermostatic mixer 5 shown is inserted into Figure 2 The liquid guiding structure 2 shown in the diagram is received in the receiving part 37 and is used with Figure 1 The nut 45 shown secures it in the mounting cavity 17 of the accessory housing 2.

[0041] Figure 5 A longitudinal cross-sectional view of the end 39 on the first longitudinal side of the fitting housing 2, showing a second variant of the annular member 8, is shown. The second variant of the annular member 8... Figure 4 The difference in the first variant of the annular member 8 shown is that the annular member 8 has sealing lips 47 at its two longitudinal ends. The sealing lips 47 are formed on the inner surface 49 of the annular member 8 and extend in the circumferential direction around the longitudinal axis 14. The sealing lips 47 seal the gap between the annular member 8 and the thermostatic mixer 5, thereby eliminating the need for... Figure 1The individual O-ring 50 is shown. Furthermore, the inlet pipe 11 has a surrounding flange 46 that can be clamped between the end face 51 of the second inlet connector 48 and the fitting housing 2 in the second inlet 4. In other respects, the second variant of the annular member 8 is constructed identically to the first variant of the annular member 8.

[0042] With this invention, the accessory housing 2 can be made of any material, and therefore can be manufactured at a lower cost.

[0043] List of reference numerals in the attached diagram:

[0044] 1. Thermostatic mixer accessories

[0045] 2 Accessory Housing

[0046] 3 First Import

[0047] 4 Second Import

[0048] 5. Thermostatic mixer

[0049] 6 First Liquid Channel

[0050] 7 Second Liquid Channel

[0051] 8 rings

[0052] 9 outer perimeter

[0053] 10 inner circumferential surfaces

[0054] 11 Water inlet pipe

[0055] 12 Liquid Guiding Structure

[0056] 13 valves

[0057] 14 Longitudinal axis

[0058] 15 outer surface

[0059] 16 ribs

[0060] 17 Installation cavity

[0061] 18 tubes head

[0062] 19 barrel shell

[0063] 20 First Entrance

[0064] 21 Second Entrance

[0065] 22 mixing chambers

[0066] 23 Mixed Water Outlet

[0067] 24 Mixing Water Channels

[0068] 25 Valve Body

[0069] 26 Adjustment Components

[0070] 27 control handles

[0071] 28 Adjusting Nut

[0072] 29 overload units

[0073] 30 Rotation axis

[0074] 31 Spring Sleeve

[0075] 32 Axial Direction

[0076] 33 Adjustment elements

[0077] 34 Adjusting slider

[0078] 35 First Adjustment Gap

[0079] 36 Second Adjustment Gap

[0080] 37 Reception Department

[0081] 38 opening

[0082] 39 End of the first longitudinal side

[0083] 40 length

[0084] 41 wall thickness

[0085] 42 Assembly Opening

[0086] 43 First Inlet Connector

[0087] 44 Shower Connector

[0088] 45 nuts

[0089] 46 flange

[0090] 47 sealing lip

[0091] 48 Second Inlet Connector

[0092] 49 inner surface

[0093] 50O ring

[0094] 51 end face

Claims

1. A thermostatic mixer accessory (1), the thermostatic mixer accessory having at least: - Accessory housing (2), which has a first inlet (3) for a first liquid and a second inlet (4) for a second liquid. - A thermostatic mixer (5) for mixing the first liquid and the second liquid into a mixed water. - First liquid channel (6), through which first liquid can be guided from first inlet (3) to thermostatic mixer (5); and - Second liquid channel (7), through which the second liquid can be guided from the second inlet (4) to the thermostatic mixer (5), wherein, The second liquid channel (7) is at least partially surrounded by an annular member (8) that prevents the second liquid from contacting the accessory housing (2). The first liquid channel is constructed in a liquid guiding structure through which the first liquid can be delivered to the thermostatic mixer without contacting the accessory housing. The liquid guiding structure has a receiving portion (37) at its longitudinal end, through which the thermostatic mixer can be inserted parallel to the longitudinal axis (14). The annular member is at least partially made of silicone resin. The first liquid is hot water and the second liquid is cold water. The liquid guiding structure (12) has multiple ribs (16) on its outer surface (15) to reduce the contact area between the liquid guiding structure (12) and the accessory housing (2). An air cushion is constructed between the ribs (16).

2. The thermostatic mixer accessory (1) according to claim 1, wherein, The outer peripheral surface (9) of the ring part (8) contacts the inner peripheral surface (10) of the accessory housing (2).

3. The thermostatic mixer accessory (1) according to any one of the preceding claims, wherein, The second liquid channel (7) is at least partially annular.

4. The thermostatic mixer accessory (1) according to any one of the preceding claims, wherein, The second liquid channel (7) extends at least partially around the thermostatic mixer (5).

5. The thermostatic mixer accessory (1) according to any one of the preceding claims, wherein, The thermostatic mixer (5) extends through the annular piece (8).

6. The thermostatic mixer accessory (1) according to any one of the preceding claims, wherein, A water inlet pipe (11) is constructed on the outer peripheral surface (9) of the annular part (8), through which the second liquid can flow into the second liquid channel (7).

7. The thermostatic mixer accessory (1) according to claim 6, wherein, The inlet pipe (11) extends at least partially into the second inlet (4).

8. The thermostatic mixer accessory (1) according to claim 6 or 7, wherein, The inlet pipe (11) has a surrounding flange (46).

9. The thermostatic mixer accessory (1) according to any one of the preceding claims, wherein, The ring-shaped part (8) can be at least partially elastically deformed so as to be arranged in the fitting housing (2).

10. The thermostatic mixer accessory (1) according to any one of claims 1 to 8, wherein, The ring-shaped part (8) is injection molded into the accessory housing (2).

11. The thermostatic mixer accessory (1) according to any one of claims 1 to 10, wherein, The annular component (8) has at least one sealing lip (47).

12. A method for manufacturing a thermostatic mixer accessory (1), comprising at least the following steps: a) Provide a fitting housing (2) having a first inlet (3) for a first liquid and a second inlet (4) for a second liquid; b) A liquid guiding structure (12) having a first liquid channel (6) for the first liquid is arranged in the fitting housing (2), wherein, The first liquid channel is constructed in the liquid guiding structure, through which the first liquid can be delivered to the thermostatic mixer without contacting the accessory housing. The liquid guiding structure has a receiving part (37) at the longitudinal end, and the thermostatic mixer can be inserted into the receiving part parallel to the longitudinal axis (14). c) Deform the annular part (8) and arrange the deformed annular part (8) in the fitting housing (2), or spray the annular part (8) into the fitting housing (2) such that the annular part (8) at least partially surrounds the second liquid channel (7) for the second liquid and prevents the second liquid from contacting the fitting housing (2), wherein the annular part (8) is at least partially made of silicone resin. d) A thermostatic mixer (5) for mixing the first liquid and the second liquid into a mixed water is arranged in the accessory housing (2) such that the first liquid can be delivered to the thermostatic mixer (5) via the first liquid channel (6) and the second liquid via the second liquid channel (7), wherein the first liquid is hot water and the second liquid is cold water. The liquid guiding structure (12) has multiple ribs (16) on its outer surface (15) to reduce the contact area between the liquid guiding structure (12) and the accessory housing (2). An air cushion is constructed between the ribs (16).

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