阅读说明：本技术 恒温阀芯和恒温水龙头 (Thermostatic valve core and thermostatic faucet ) 是由 刘筱倩 梁稳 周高云 于 2019-03-05 设计创作，主要内容包括：本发明涉及一种恒温阀芯和恒温水龙头,恒温阀芯包括有：阀芯壳体,内部开设有导流腔,外侧壁上分别沿径向开设有冷水进口和热水进口,左右端面上分别沿轴向开设有混水出口和第一安装口；调温元件,该调温元件螺纹连接在第一安装口处；活塞,与导流腔相匹配,能够在导流腔中左右移动,用于调节冷水进口和热水进口的进水流量,沿轴向开设有通孔；以及驱动组件,位于导流腔中,右端与调温元件相抵,能够驱动活塞左右移动；冷水进口和热水进口的间距记为W1,活塞沿轴向的宽度记为W2,W1和W2满足以下条件：W1≥W2。恒温水龙头安装有上述恒温阀芯。与现有技术相比,本发明的优点在于：水流量稳定,且热水器稳定燃烧,不会频繁切换燃烧段位。(The invention relates to a thermostatic valve core and a thermostatic faucet, wherein the thermostatic valve core comprises: the inner part of the valve core shell is provided with a flow guide cavity, the outer side wall of the valve core shell is respectively provided with a cold water inlet and a hot water inlet along the radial direction, and the left end surface and the right end surface of the valve core shell are respectively provided with a mixed water outlet and a first mounting hole along the axial direction; the temperature adjusting element is in threaded connection with the first mounting opening; the piston is matched with the flow guide cavity, can move left and right in the flow guide cavity, is used for adjusting the water inlet flow of the cold water inlet and the hot water inlet, and is provided with a through hole along the axial direction; the driving assembly is positioned in the flow guide cavity, the right end of the driving assembly is abutted against the temperature adjusting element, and the driving assembly can drive the piston to move left and right; the distance between the cold water inlet and the hot water inlet is marked as W1, the width of the piston along the axial direction is marked as W2, and W1 and W2 meet the following conditions: w1 is more than or equal to W2. The thermostatic faucet is provided with the thermostatic valve core. Compared with the prior art, the invention has the advantages that: the water flow is stable, the water heater burns stably, and the burning section position can not be frequently switched.)

1. A thermostatic cartridge, its characterized in that: comprises that

The valve core shell is internally provided with a flow guide cavity (a), the outer side wall of the valve core shell is respectively provided with a cold water inlet (21) and a hot water inlet (22) which are communicated with the flow guide cavity (a) along the radial direction, and the left end surface and the right end surface of the valve core shell are respectively provided with a mixed water outlet (31) and a first mounting hole (11) which are communicated with the flow guide cavity (a) along the axial direction;

a temperature control element (4), wherein the temperature control element (4) is connected to the first mounting opening (11) in a threaded manner;

the piston (5) is matched with the flow guide cavity (a), can move left and right in the flow guide cavity (a), is used for adjusting the water inlet flow of the cold water inlet (21) and the hot water inlet (22), and is provided with a through hole (52) along the axial direction; and

the driving assembly is positioned in the flow guide cavity (a), the right end of the driving assembly is abutted against the temperature adjusting element (4), and the driving assembly can drive the piston (5) to move left and right;

the distance between the cold water inlet (21) and the hot water inlet (22) is marked as W1, the width of the piston (5) along the axial direction is marked as W2, and W1 and W2 meet the following conditions: w1 is more than or equal to W2;

when the temperature of mixed water is higher, the driving assembly controls the piston (5) to move leftwards, the cold water inlet (21) is gradually increased, and the hot water inlet (22) is gradually decreased; when the mixed water temperature is lower, the driving assembly controls the piston (5) to move rightwards, the hot water inlet (22) is gradually increased, and the cold water inlet (21) is gradually decreased.

2. A thermostatic cartridge according to claim 1, wherein: the widths of the cold water inlet (21) along the axial direction are recorded as W3, and W2 and W3 meet the following conditions: w2 is more than or equal to W3.

3. A thermostatic cartridge according to claim 1, wherein: the water heater also comprises a limiting cylinder (9) arranged in the flow guide cavity (a), the left end of the limiting cylinder (9) is abutted against the inner end face of the valve core shell, the right end of the limiting cylinder is abutted against the left end face of the piston (5), and the side wall of the limiting cylinder (9) is radially provided with a circulation hole (91) communicated with the hot water inlet (22).

4. A thermostatic cartridge according to claim 1, wherein: the driving component comprises

The paraffin element (6) is inserted in a second mounting opening (51) formed in the right end face of the piston (5) along the axial direction;

the left end of the ejector rod (7) is connected with the paraffin element (6), and the right end of the ejector rod is abutted against the temperature adjusting element (4); and

the reset spring (8) is sleeved on the periphery of the paraffin element (6), the left end of the reset spring is abutted against the inner end surface of the valve core shell, the right end of the reset spring is abutted against the left end surface of the piston (5), and the piston (5) can always keep the trend of moving rightwards;

when the temperature of mixed water is higher, the paraffin element (6) expands with heat to push the ejector rod (7), and the ejector rod (7) pushes the paraffin element (6) to move leftwards under the reaction force of the temperature adjusting element (4), so that the piston (5) is driven to move leftwards; when the temperature of mixed water is lower, the paraffin element (6) contracts when cooled, and the piston (5) moves rightwards under the action of the return spring (8).

5. A thermostatic cartridge according to claim 4, wherein: and a limiting groove (42) for inserting the end part of the ejector rod (7) is formed in the left end face of the temperature adjusting element (4).

6. A thermostatic cartridge according to claim 1, wherein: the number of the cold water inlets (21) and the number of the hot water inlets (22) are respectively a plurality, and the cold water inlets and the hot water inlets are respectively arranged along the circumferential direction of the valve core shell at intervals.

7. A thermostatic cartridge according to claim 1, wherein: an operation knob (41) is arranged on the right end face of the temperature adjusting element (4).

8. A thermostatic cartridge according to claim 1, wherein: the outer side wall of the valve core shell is provided with a first annular groove (12), a second annular groove (23) and a third annular groove (24) which are used for containing a sealing ring along the circumferential direction, the first annular groove (12) is located on the right side of a cold water inlet (21), the second annular groove (23) is located between the cold water inlet (21) and a hot water inlet (22), and the third annular groove (24) is located on the left side of the hot water inlet (22).

9. A thermostatic cartridge according to claim 1, wherein: the valve core shell comprises a valve seat (1), a valve sleeve (2) and a valve cover (3), wherein two ends of the valve sleeve (2) are respectively connected with the valve seat (1) and the valve cover (3).

10. A thermostatic faucet has a cold water passage (b), a hot water passage (c) and a mixing water passage (d), characterized in that: the thermostatic valve core according to any one of claims 1 to 9, wherein the cold water channel (b) is communicated with the cold water inlet (21), the hot water channel (c) is communicated with the hot water inlet (22), and the mixed water channel (d) is communicated with the mixed water outlet (31).

Technical Field

The invention relates to the technical field of gas water heaters, in particular to a thermostatic valve core and a thermostatic faucet.

Background

The thermostatic valve core is a device which automatically adjusts the mixing proportion of cold water and hot water, so that the temperature of the mixed water can be automatically kept at a set temperature. The thermostatic valve core is used as a core device and is commonly applied to thermostatic water heaters and thermostatic faucets. The constant temperature water tap comprises a tap valve body, a switch valve core, a constant temperature valve core and other accessories, wherein each circulation channel is arranged in the tap valve body, cold water and hot water are guided to enter the constant temperature valve core according to the corresponding channels, and then the cold water and the hot water are mixed to obtain constant temperature water. The thermostatic valve core generally comprises a valve body, a thermosensitive element and a piston, wherein the thermosensitive element senses temperature to control the reciprocating movement of the piston and regulate the flow ratio of cold water and hot water entering the valve body so as to achieve constant-temperature water outlet.

Like utility model patent "thermostatic cartridge assembly" that patent application number is CN201220374397.7 (the publication number is CN202746668U) discloses a thermostatic cartridge assembly, is located the tap shell, removes case, disk seat, valve barrel and valve gap including the temperature sensing, and the valve barrel is located between piston and the shell inner wall to both ends are connected for dismantling with valve gap and disk seat respectively, have seted up cold water mouth and hot water mouth on the valve barrel lateral wall, and the valve core is removed including the piston that can adjust cold water mouth, hot water mouth size to the temperature sensing.

The above thermostatic cartridge has the following problems: because the piston is along axial width broad, when the cold water opening increase, the hot water opening can diminish, can lead to the frequent change unstability of discharge through gas heater like this, to the gas heater of water resistance volatility difference, it can be unstable to go out the hot water temperature to lead to thermostatic valve core constantly to adjust the hot and cold water opening size always, shorten thermostatic valve core's life.

Disclosure of Invention

The first technical problem to be solved by the invention is to provide a thermostatic valve core which has stable water flow, stable combustion of a water heater and no frequent switching of combustion section positions, aiming at the current situation of the prior art.

The second technical problem to be solved by the invention is to provide a thermostatic valve core with adjustable minimum hot water flow aiming at the current situation of the prior art.

The third technical problem to be solved by the invention is to provide a thermostatic faucet provided with the thermostatic valve core.

The technical scheme adopted by the invention for solving the first technical problem is as follows: a thermostatic cartridge, its characterized in that: comprises that

The valve core shell is internally provided with a flow guide cavity, the outer side wall of the valve core shell is respectively provided with a cold water inlet and a hot water inlet which are communicated with the flow guide cavity along the radial direction, and the left end surface and the right end surface of the valve core shell are respectively provided with a mixed water outlet and a first mounting port which are communicated with the flow guide cavity along the axial direction;

the temperature adjusting element is connected to the first mounting opening in a threaded mode;

the piston is matched with the flow guide cavity, can move left and right in the flow guide cavity, is used for adjusting the water inlet flow of the cold water inlet and the hot water inlet, and is provided with a through hole along the axial direction; and

the driving assembly is positioned in the flow guide cavity, the right end of the driving assembly is abutted against the temperature adjusting element, and the driving assembly can drive the piston to move left and right;

the distance between the cold water inlet and the hot water inlet is marked as W1, the width of the piston along the axial direction is marked as W2, and W1 and W2 meet the following conditions: w1 is more than or equal to W2;

when the temperature of mixed water is higher, the driving assembly controls the piston to move leftwards, the cold water opening is gradually increased, and the hot water opening is gradually decreased; when the temperature of mixed water is lower, the driving assembly controls the piston to move rightwards, the hot water opening is gradually increased, and the cold water opening is gradually reduced.

Preferably, the widths of the cold water inlet in the axial direction are recorded as W3, and W2 and W3 satisfy the following conditions: w2 is more than or equal to W3, thereby ensuring that the piston can completely close the cold water opening.

Preferably, the water heater also comprises a limiting cylinder arranged in the flow guide cavity, the left end of the limiting cylinder is abutted against the inner end surface of the valve core shell, the right end of the limiting cylinder is abutted against the left end surface of the piston, and the side wall of the limiting cylinder is radially provided with a circulation hole communicated with the hot water inlet. This solution can solve the second technical problem mentioned above: the limiting position of the piston moving leftwards can be limited by the limiting barrel, so that the minimum hot water flow of the thermostatic valve core is guaranteed, the problem that the gas water heater stops working due to the fact that the piston is adjusted too fast is solved, namely the water flow passing through the gas water heater is higher than the starting flow, and frequent starting and stopping of the gas water heater are avoided. This solution can solve the second technical problem described above.

Preferably, the driving assembly comprises

The paraffin element is inserted at a second mounting opening which is formed in the right end face of the piston along the axial direction;

the left end of the ejector rod is connected with the paraffin element, and the right end of the ejector rod is abutted against the temperature adjusting element; and

the reset spring is sleeved on the periphery of the paraffin element, the left end of the reset spring is abutted against the inner end surface of the valve core shell, and the right end of the reset spring is abutted against the left end surface of the piston, so that the piston always keeps a rightward movement trend;

when the temperature of the mixed water is higher, the paraffin element expands with heat to push the ejector rod, and the ejector rod pushes the paraffin element to move leftwards under the reaction force of the temperature adjusting element so as to drive the piston to move leftwards; when the temperature of the mixed water is lower, the paraffin element shrinks when being cooled, and the piston moves rightwards under the action of the return spring.

Furthermore, a limiting groove for inserting the end part of the ejector rod is formed in the left end face of the temperature adjusting element, so that the stability of the ejector rod is improved.

Preferably, the number of the cold water inlets and the number of the hot water inlets are respectively a plurality of, and the cold water inlets and the hot water inlets are respectively arranged along the circumferential direction of the valve core shell at intervals, so that dispersed turbulence is generated in passing water flow, and mixing of cold water and hot water is facilitated.

Preferably, an operation knob is arranged on the right end face of the temperature adjusting element, so that a user can adjust the set temperature conveniently.

Preferably, the outer side wall of the valve core shell is respectively provided with a first annular groove, a second annular groove and a third annular groove along the circumferential direction, the first annular groove is located on the right side of the cold water inlet, the second annular groove is located between the cold water inlet and the hot water inlet, and the third annular groove is located on the left side of the hot water inlet, so that the sealing ring can be conveniently accommodated.

Preferably, the valve core shell comprises a valve seat, a valve sleeve and a valve cover, wherein two ends of the valve sleeve are respectively connected with the valve seat and the valve cover, so that the valve core shell is convenient to open and assemble.

The technical scheme adopted by the invention for solving the third technical problem is as follows: the utility model provides a thermostatic faucet, has cold water passageway, hot water passageway and mixes the water passageway, its characterized in that: the thermostatic valve core is characterized by further comprising the thermostatic valve core, the cold water channel is communicated with the cold water inlet, the hot water channel is communicated with the hot water inlet, and the mixed water channel is communicated with the mixed water outlet.

Compared with the prior art, the invention has the advantages that: the distance W1 between the cold water inlet and the hot water inlet and the width W2 of the piston along the axial direction are defined as follows: w1 is not less than W2, realizes the stepped adjustment of the water inflow of the cold water inlet and the hot water inlet by the piston, can ensure that the water flow passing through the gas water heater is stable, and the water heater burns stably, does not frequently switch the burning section position, and avoids the unstable condition of hot water at the end of the gas water heater.

Drawings

FIG. 1 is a schematic perspective view of a thermostatic faucet according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is an exploded view of the thermostatic cartridge of FIG. 1;

fig. 4 is a cross-sectional view of the thermostatic cartridge of fig. 1.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 4, the thermostatic valve cartridge of the present embodiment includes a valve cartridge housing, a temperature adjusting element 4, a piston 5, a driving assembly, and a limit cylinder 9.

The valve core shell comprises a valve seat 1, a valve sleeve 2 and a valve cover 3, wherein two ends of the valve sleeve 2 are respectively connected with the valve seat 1 and the valve cover 3, so that the valve core shell is convenient to open and assemble. A diversion cavity a is formed after the valve seat 1, the valve sleeve 2 and the valve cover 3 are assembled, a cold water inlet 21 and a hot water inlet 22 which are communicated with the diversion cavity a are respectively arranged on the outer side wall of the valve sleeve 2 along the radial direction, and a mixed water outlet 31 and a first mounting opening 11 which are communicated with the diversion cavity a are respectively arranged on the left end surface of the valve cover 3 and the right end surface of the valve seat 1 along the axial direction. In order to generate a dispersion turbulence in the passing water flow and facilitate the mixing between the cold water and the hot water, the number of the cold water inlets 21 and the number of the hot water inlets 22 are respectively plural and are respectively arranged at intervals along the circumferential direction of the valve housing 2. The outer side walls of the valve seat 1 and the valve sleeve 2 are respectively provided with a first annular groove 12, a second annular groove 23 and a third annular groove 24 along the circumferential direction, the first annular groove 12 is located on the right side of the cold water inlet 21, the second annular groove 23 is located between the cold water inlet 21 and the hot water inlet 22, and the third annular groove 24 is located on the left side of the hot water inlet 22, so that the sealing rings can be accommodated conveniently.

The temperature control element 4 is screwed to the first mounting opening 11 for controlling the set temperature. In order to facilitate the user to adjust the set temperature, the right end surface of the temperature adjusting element 4 is provided with an operation knob 41.

The piston 5 is matched with the diversion cavity a and can move left and right in the diversion cavity a to adjust the water inlet flow of the cold water inlet 21 and the hot water inlet 22. The piston 5 is axially provided with a through hole 52 for water to pass through.

The driving assembly is positioned in the flow guide cavity a, the right end of the driving assembly is abutted to the temperature adjusting element 4, and the driving assembly can drive the piston 5 to move left and right. The specific implementation mode of the driving assembly can be set as required, in this embodiment, the driving assembly includes a paraffin element 6, a push rod 7 and a return spring 8, wherein the paraffin element 6 is inserted in a second mounting port 51 formed on the right end surface of the piston 5 along the axial direction, the left end of the push rod 7 is connected with the paraffin element 6, the right end of the push rod is abutted against the temperature adjusting element 4, the return spring 8 is sleeved on the periphery of the paraffin element 6, the left end of the return spring is abutted against the inner end surface of the valve cover 3, the right end of the return spring is abutted against the left end surface of the piston 5, and the piston 5 can always keep moving towards the right. When the temperature of the mixed water is higher, the paraffin element 6 expands with heat to push the ejector rod 7, the ejector rod 7 pushes the paraffin element 6 to move leftwards under the reaction force of the temperature adjusting element 4, the piston 5 is further driven to move leftwards, the cold water inlet 21 is gradually increased or the hot water inlet 22 is gradually decreased, and the temperature of the mixed water is reduced; when the mixed water temperature is lower, the paraffin element 6 contracts when cooled, the piston 5 moves rightwards under the action of the return spring 8, the hot water inlet 22 is gradually increased or the cold water inlet 21 is gradually decreased, and the mixed water temperature is increased. It can be seen that the most important component is the paraffin element 6, and the driving of the piston 5 by the driving assembly can be realized by the expansion and contraction of the paraffin element 6. Of course, other heat sensitive elements such as memory alloy springs and the like may be used to achieve the same purpose. In addition, the left end surface of the temperature adjusting element 4 is provided with a limit groove 42 for inserting the end part of the mandril 7, thereby improving the stability of the mandril 7.

The limiting cylinder 9 is installed in the flow guide cavity a, the left end of the limiting cylinder abuts against the inner end face of the valve cover 3, the right end of the limiting cylinder abuts against the left end face of the piston 5, and a circulation hole 91 communicated with the hot water inlet 22 is radially formed in the side wall of the limiting cylinder 9. In the temperature adjusting process, the situation that the hot water flow is reduced to be lower than the starting flow of the gas water heater due to the fact that the piston is adjusted too fast exists in the common thermostatic valve core, a section of cold water exists in the water outlet process, and the gas water heater can be restarted to burn. And the limiting cylinder 9 can limit the limiting position of the piston 5 moving leftwards, so that the minimum hot water flow of the thermostatic valve core is ensured, the problem that the gas water heater stops working due to the fact that the piston is adjusted too fast is solved, namely, the water flow passing through the gas water heater is higher than the starting flow, and the frequent start and stop work of the gas water heater is avoided. The width of the limiting cylinder 9 in the axial direction is marked as H, and the size of the H can be set according to requirements, so that the limiting cylinder is suitable for different gas water heaters.

In this embodiment, the distance between the cold water inlet 21 and the hot water inlet 22 is denoted by W1, the width of the piston 5 in the axial direction is denoted by W2, and W1 and W2 satisfy the following conditions: w1 is more than or equal to W2, therefore, when the temperature of the mixed water is higher, the driving assembly controls the piston 5 to move leftwards, the cold water inlet 21 is gradually increased, and the hot water inlet 22 is gradually decreased; when the temperature of mixed water is lower than normal, drive assembly control piston 5 moves rightwards, and hot water inlet 22 increases gradually earlier, and cold water inlet 21 reduces gradually again, through the inflow of step adjustment cold water inlet 21 and hot water inlet 22, can guarantee that the discharge through gas heater is stable, and the water heater burns steadily, can not frequently switch the burning section position, avoids the unstable condition of gas heater end play hot water. In addition, the cold water inlet 21 has a width in the axial direction denoted as W3, and W2 and W3 satisfy the following conditions: w2 is more than or equal to W3, so as to ensure that the piston 5 can completely close the cold water inlet 21.

The invention also provides a thermostatic faucet provided with the thermostatic valve core, and the thermostatic faucet is also provided with a cold water channel b, a hot water channel c and a water mixing channel d, wherein the cold water channel b is communicated with the cold water inlet 21, the hot water channel c is communicated with the hot water inlet 22, and the water mixing channel d is communicated with the water mixing outlet 31. The first annular groove 12, the second annular groove 23 and the third annular groove 24 of the thermostatic valve core are provided with sealing rings, and the sealing rings are clamped between the thermostatic valve core and the thermostatic faucet, so that the sealing performance between the thermostatic valve core and the thermostatic faucet can be improved.

The working principle of the invention is as follows:

(1) the position of the temperature adjusting element 4 is adjusted by operating the knob 41, the thermostatic faucet is opened, at the moment, cold water enters the diversion cavity a from the cold water channel b through the cold water inlet 21, hot water enters the diversion cavity a from the hot water channel c through the hot water inlet 22, and the cold water and the hot water are mixed to form mixed water and flow out from the mixed water outlet 31 through the mixed water channel d;

(2) when the temperature of mixed water is higher, the paraffin element 6 is expanded by heat to push the ejector rod 7, the ejector rod 7 pushes the paraffin element 6 to move leftwards under the reaction force of the temperature adjusting element 4, so as to drive the piston 5 to move leftwards, the cold water inlet 21 is gradually increased, when the cold water inlet 21 is opened to the maximum and the temperature of the mixed water is higher, the piston 5 continues to move leftwards, and the hot water inlet 22 is gradually reduced;

(3) when the mixed water temperature is lower, the paraffin element 6 contracts when cooled, the piston 5 moves rightwards under the action of the return spring 8, the hot water inlet 22 is gradually increased, and when the hot water inlet 22 is opened to the maximum and the mixed water temperature is lower, the piston 5 continues to move rightwards, and the cold water inlet 21 is gradually reduced.