WO2014111047A1

WO2014111047A1 - Dual-switch thermostatic valve

Info

Publication number: WO2014111047A1
Application number: PCT/CN2014/070852
Authority: WO
Inventors: 崔荀; 崔源湘
Original assignee: Cui Xun; Cun Yuanxiang
Priority date: 2013-01-18
Filing date: 2014-01-17
Publication date: 2014-07-24
Also published as: CN103498952A; CN103498952B

Abstract

A dual-switch thermostatic valve comprises a thermostatic valve core (3), a dual-switch valve core (4), a dual-switch rotary knob, a temperature regulating rotary knob, and a valve body. The valve body is formed by a columnar cavity (1) and an outer sleeve (2). Cold and hot water inlets(L, H) and a mixed water outlet (M) are disposed on the outer sleeve (2), and are separately corresponding to cold and hot water inlet areas (L1, H1) and a water outlet area (M1) on the columnar cavity (1). The thermostatic valve core (3) and the dual-switch valve core (4) are fixedly disposed separately at the two ends of an inner cavity body of the columnar cavity (1), and the two valve cores are separately jogged with the thermostatic rotary knob and the dual-switch rotary knob to conduct temperature regulation and conduct switching on and switching off. The columnar cavity (1) can lead cold and hot water entering the outer sleeve (2) into the dual-switch valve core (4), and the cold and hot water are separately led to cold and hot water inlet cavities of the thermostatic valve core (3) after the dual-switch valve core (4) conducts switching on and off and flow regulation. The mixed water is regulated by means of the thermostatic valve core (3), so that the mixed water can outflow in a constant temperature. The dual-switch thermostatic valve solves the problem that when the thermostatic valve is closed, reverse flow and water mixing occur due to uneven pressure of cold water and hot water, and therefore a a one-way valve is not required, and the synchronous and even regulation of the cold water inflow and the hot water inflow is achieved, and the precision of the constant temperature of the thermostatic valve is ensured.

Description

Double switch thermostatic valve

Technical field

The invention relates to a double switch thermostatic valve, which is suitable for bathing of water heaters.

Background technique

At present, the switch of the thermostatic valve used on the market is mostly located at the water outlet end of the mixed water. Because the valve has more water and pressure when it is closed, it is easy to freeze in winter, and the switch of the thermostatic valve is set at the water outlet end of the mixed water. Therefore, the hot and cold water inlet must be added with a check valve to prevent the water and other diseases caused by the valve closing when the cold water inlet pressure difference is too large.

In response to the above problems, the applicant has applied a four-hole ceramic valve core with a double-switching function of hot and cold water to the hot and cold water inlet chamber of the thermostatic valve core in the utility model patent with the patent number 200620000136. The problem of cross-flow reverse flow after the thermostatic valve is closed also eliminates the one-way valve of the hot water inlet end of the thermostatic valve. However, due to its compact structure, the patented product does not give any hint for the appearance of the valve body.

A horizontal structure of a thermostatic valve using a double-switch valve spool and a thermostatic valve core, which is sold in the market, solves problems such as string water, but in the double switch, only the water inlet of the hot water realizes the adjustment of the switch and the flow rate. The other switch is used to control the switch and flow regulation of the mixed water. Because the two-switch knob does not adjust the flow of cold water in the 90 degree rotation, the result affects the thermostatic adjustment accuracy of the thermostatic valve, especially At low flow rates, it is more obvious. At the same time, because the water outlet is still under pressure when it is closed, it has no effect on antifreeze. In addition, due to the space limitation in the structure of the product, no common standard is used on the valve body. The size of the thermostatic valve core assembly, but the use of the internal parts of the thermostatic valve core installation, is not conducive to the mass production of the valve and the maintenance and disassembly of the thermostatic valve core.

Summary of the invention

The invention improves the prior art of the above patent and the market, and combines with the thermostatic valve core assembly, has novel structure and simple process, and is applied to the coaxial structure of the horizontal thermostatic valve body, realizing The true dual switch and dual flow control.

The utility model relates to a double-switching thermostatic valve, comprising a thermostatic valve core 3, a double-switching valve core 4, a double-switching knob, a temperature-adjusting knob and a valve body, wherein the thermostatic valve core 3 comprises a housing, a temperature sensor, a driving rod and a temperature regulation a sliding sleeve, a biasing spring, a valve stem temperature adjusting thread sub-assembly and a sealing ring; the double-switching valve core 4 includes a moving piece and a fixed piece having two pairs of inlet and outlet holes, and a chassis and a dial in the prior art. , casing and seals,

The utility model is characterized in that the valve body is composed of a cylindrical cavity 1 and an outer sleeve 2, the outer sleeve is sleeved on the outer peripheral surface of the cylindrical cavity and is fixedly fixed, and the outer circumferential surface of the outer sleeve 2 is provided with a mixed water outlet M and two ends. The outer peripheral surfaces are respectively provided with cold and hot water inlets L and H, and respectively correspond to the hot and cold water inlet areas L1, HI and the water discharge area M1 on the columnar cavity 1 (the hot and cold water inlet water is generally left hot right cold) ),

One end of the inner cavity of the columnar cavity 1 (right end) is fixed with a thermostatic valve core 3, and the other end (left end) is fixed with a double-switching valve core 4, and the thermostatic valve core 3 and the double-switching valve core 4 are respectively combined with a thermostat knob and The two-switch knob is fitted to adjust the temperature and switch And flow adjustment, the cylindrical cavity 1 is used to introduce the hot and cold water entering the outer sleeve 2 into the double-switching valve core 4, respectively, and is introduced into the thermostatic valve core through the switch and flow adjustment of the double-switching valve core 4, respectively. The hot and cold water of the 3 inlet water chamber is then adjusted by the thermostatic valve core 3 to allow the mixed water to flow at a constant temperature.

The valve body can adopt the following structure: The valve body is composed of a cylindrical cavity 1 and an outer sleeve 2, the right end of the inner cavity of the cylindrical cavity 1 is fixed with a thermostatic valve core 3, and the left end is fixed with a double switch valve core 4, The thermostatic valve core 3 and the double-switch valve core 4 are respectively combined with the thermostat knob and the double-switch knob for temperature regulation, switching and flow adjustment;

Four annular grooves are arranged on the outer peripheral surface of the cylindrical cavity 1, and a 0-ring is respectively embedded in the groove to form three annular cavities which are separated from each other.

The outer sleeve 2 is sleeved on the outer peripheral surface of the columnar cavity 1 and is fixed to the right end, the middle and the left end, respectively, forming a cold water inlet zone L1, a hot water inlet zone HI and a mixed water outlet zone Ml.

The outer peripheral surface of the outer sleeve 2 is provided with a mixed water outlet M, and the outer peripheral surfaces of the two ends are respectively provided with cold and hot water inlets L, H, and respectively with the cold and hot water inlet areas L1, HI on the columnar cavity 1 and The mixed water outlet area M1 corresponds to the mixed water outlet M of the outer sleeve 2 placed on the columnar cavity 1, the cold and hot water inlets L, H and the mixed water outlet area M1 and the cold and hot water, respectively. The water inlet areas L1 and HI communicate to form three inlet and outlet channels.

Wherein: the hot water inlet zone HI has a hot water outlet hole H2, and the hot water outlet hole H2 is connected to the outlet hole of the double-switch valve plug 4 via the hot water inlet passage H3;

The cold water inlet zone L1 has a cold water outlet hole L2, and the cold water outlet hole L2 communicates with the inlet hole of the double-switch valve plug 4 via the cold water inlet passage L3, and the cold water inlet passage L3 is located in the thermostatic valve core 3 bottom and isolated from the thermostatic valve core 3;

The mixed water outlet hole M2 is opened in the annular cavity of the mixed water outlet area M1, and the mixed water outlet hole M2 is connected to the outlet hole of the bottom of the thermostatic valve core 3 via the mixed water outlet passage M3, and is passed through the thermostatic valve core 3 The adjusted mixed water enters the mixed water outlet area from the outlet hole, and then flows out through the mixed water outlet M of the outer sleeve 2;

The outer peripheral surface of the cavity at the right end of the columnar cavity 1 is further provided with a two-stage cavity of a hot water chamber H6 and a cold water chamber L6, and the hot water chamber H6 is provided with a hot water chamber at both ends of the columnar cavity 1 in the axial direction. The water hole H5 and the hot water chamber water outlet hole H7, the hot water chamber water inlet hole H5 penetrates from the bottom of the thermostatic valve core 3 to communicate with the hot water outlet hole H4 of the double-switch valve body 4, and the hot water chamber water outlet hole H7 is directly Put into the hot water inlet chamber H8 of the thermostatic valve core 3;

The cold water chamber L6 is provided with a cold water chamber inlet hole L5 and a cold water chamber outlet hole L7 at both ends of the longitudinal direction of the columnar cavity 1, and the cold water chamber inlet hole L5 penetrates from the bottom of the thermostatic valve core 3 and the double switch valve core 4, the cold water outlet hole L4 is connected, and the cold water chamber outlet hole L7 is directly inserted into the cold water inlet chamber L8 of the thermostatic valve core 3,

And a sealing ring is respectively embedded in the outer circumferential surface of the columnar cavity 1 at the position of the hot water chamber H6 and the cold water chamber L6. (not shown in the figure, only the corresponding notch is marked), the sealing ring is separated from the inner wall of the outer sleeve 2 to separate the hot water chamber H6 and the cold water chamber L6; and the sealing ring The hot water chamber H6 and the cold water chamber L6 are also sealed from the cold water inlet region L1.

The water passages formed by the above-mentioned respective cavities (the hot water chamber H6, the cold water chamber L6, and the three recesses formed by the annular grooves) are all the cylindrical cavity 1 and the outer sleeve 2 and the sealing ring. form. A partial cavity is disposed on the outer circumferential surface of the annular cavity having the hot water outlet hole H2, and the hot water outlet hole H2 is located in the partial cavity, and the partial cavity is surrounded by a sealing ring. a notch, and the sealing ring of the partial cavity is adhered to the inner wall of the outer sleeve 2 to form a hot water zone H1, and the hot water inlet H on the outer sleeve 2 communicates with the hot water zone HI; a cooling water passage hole L9 is disposed in the outer annular cavity region, and the cooling water passing hole L9 is in communication with the cold water inlet passage L3;

The cooling water passage hole L9 is for overflowing the cold water leading to the double-switch valve body 4 to the outer peripheral surface of the columnar cavity 1 and surrounding the partial annular cavity of the hot water zone HI to lower the outer sleeve 2 temperature.

In order to reduce the surface area of the hot water zone HI, the partial annular cavity is the smallest area of the annular cavity including the hot water inlet H and the hot water zone water outlet H2.

The valve body can also adopt the following structure: The valve body is composed of a cylindrical cavity 1 and an outer sleeve 2, the right end of the inner cavity of the cylindrical cavity 1 is fixed with a thermostatic valve core 3, and the left end is fixed with a double switch valve core 4 The thermostatic valve core 3 and the double-switch valve core 4 are respectively combined with the thermostat knob and the double-switch knob for temperature regulation, switching and flow adjustment;

An annular groove is respectively disposed on the outer peripheral surface of the columnar cavity 1 at both ends, and a 0-type sealing ring is respectively embedded in the groove.

The two ends of the outer peripheral surface between the two 0-type seal rings respectively have a hot water outlet hole H2 and a cold water outlet hole L2, and a mixed water outlet hole M2 in the middle, which is adjacent to the outer peripheral surface of the cold water outlet hole L2. There are also two sections of the hot water chamber H6 and the cold water chamber L6;

And on the outer peripheral surface of the columnar cavity 1, four sealing rings respectively surrounding the hot water chamber H6, the cold water chamber L6, the hot water outlet hole H2 and the mixed water outlet hole M2 are embedded (not shown in the figure, only marked a sleeve corresponding to the sealing ring), the outer sleeve 2 is sleeved on the outer peripheral surface of the cylindrical cavity 1, and the respective sealing rings are respectively formed with the inner wall of the outer sleeve 2 to form mutually separated hot water chambers H6, Cold water chamber L6, hot water inlet zone HI and mixed water outlet zone Ml; other parts of the outer peripheral surface of the columnar cavity 1 are joined with the inner wall of the outer sleeve 2 through the 0-ring seals at both ends to form cold water Inlet zone L1;

The mixed water outlet 设置, the cold water into the OL, and the hot water inlet H disposed on the outer circumferential surface of the outer sleeve 2 respectively communicate with the mixed water outlet area M1, the cold water inlet area L1, and the hot water inlet area HI to form three inlet and outlet channels. , Wherein: the hot water outlet hole H2 is connected to the water outlet of the double-switch valve plug 4 via the hot water inlet passage H3; the cold water outlet hole L2 is connected to the inlet hole of the double-switch valve spool 4 via the cold water inlet passage L3. The cold water inlet passage L3 is located at the bottom of the thermostatic valve core 3 and is isolated from the thermostatic valve core 3;

The mixed water outlet hole M2 communicates with the outlet hole at the bottom of the thermostatic valve core 3 via the mixed water outlet passage M3, and the hot water chamber H6 is provided with a hot water chamber inlet hole H5 and heat along both axial ends of the columnar cavity 1. The water chamber outlet hole H7, the hot water chamber inlet hole H5 penetrates from the bottom of the thermostatic valve core 3 to communicate with the hot water outlet hole H4 of the double-switch valve body 4, and the hot water chamber outlet hole H7 directly penetrates the thermostatic valve core 3 hot water inlet chamber H8;

The cold water chamber L6 is provided with a cold water chamber inlet hole L5 and a cold water chamber outlet hole L7 at both ends of the longitudinal direction of the columnar cavity 1, and the cold water chamber inlet hole L5 penetrates from the bottom of the thermostatic valve core 3 and the double switch valve core 4 the cold water outlet hole L4 is connected, the cold water chamber outlet hole L7 directly penetrates the cold water inlet cavity L8 of the thermostatic valve core 3;

The water passages formed by the respective cavities (the hot water chamber H6, the cold water chamber L6, the hot water inlet region H1, the mixed water outlet region M1, and the cold water inlet region L1) are all the cylindrical chamber 1 and the outer casing. The cylinder 2 and the sealing ring are jointly formed; the hot water chamber H6 and the cold water chamber! ^, Hot water inlet zone Hl, Mixed water outlet zone M16 is separated from each other by their respective seals () and is sealed from the cold water inlet zone L1. In order to reduce the surface area of the hot water zone HI, the two partial annular cavities are respectively the area including the hot water inlet H and the hot water zone water outlet hole H2; the annular recess between the two ends of the 0-shaped seal ring The area other than the above-mentioned hot water zone Η1, mixed water zone M1, hot water chamber H6 and cold water chamber L6 is cold water zone L1, and the cold water zone L1 can surround the hot water zone H1, thereby reducing the outer sleeve 2 Temperature, avoid burns. DRAWINGS

1 is a schematic exploded view of the first embodiment of the double-switch thermostat valve of the present invention;

2 is a cross-sectional view of the columnar cavity structure of the first embodiment of the present invention, taken along line AA of FIG. 3. FIG. 3 is a double-switching valve of the columnar cavity of the first embodiment of the double-switching thermostat valve of the present invention. 4 hole position of the bottom surface of the core cavity FIG. 4 is a top view of the columnar cavity structure of the first embodiment of the double switch thermostat valve of the present invention

Figure 5 is a bottom view of the columnar cavity structure of the first embodiment of the double switch thermostat valve of the present invention;

Figure 6 is a perspective view showing the structure of the columnar cavity of the second embodiment of the double-switch thermostat valve of the present invention;

Figure 7 is a perspective view showing a columnar cavity structure of a third embodiment of the double-switching thermostat valve of the present invention. Figure 8 is a perspective view of a columnar cavity structure of a third embodiment of the double-switching thermostat valve of the present invention.

Figure 9 is a bottom perspective view of the columnar cavity structure of the third embodiment of the double switch thermostat valve of the present invention

1. Column cavity 2. Outer sleeve 3. Thermostatic valve core 4. Double switch valve core

H. Hot water inlet of outer sleeve HI. Hot water zone of columnar cavity H2. Hot water zone outlet hole H3. Connection of double-opening valve Core hot water inlet hole H4. Hot water outlet hole H5. Column cavity hot water chamber inlet hole H6. Hot water chamber H7. Hot water chamber outlet hole H8. Thermostatic valve core hot water inlet chamber

L. Cold water inlet L1 of outer sleeve 2. Cold water area L2 of columnar cavity. Outlet hole L3 of cold water zone. Cold water inlet hole of double-switching valve core L4. Cold water outlet hole L5. Cold water inlet hole of columnar cavity L6. Cold water chamber L7. Cold water chamber outlet hole L8. Constant temperature valve core cold water inlet chamber L9. Cooling water through hole

M. Mixed water outlet of the outer sleeve Ml. Mixed water outlet area of the columnar cavity M2. Mixed water outlet hole

M3. Mixed water outlet channel of thermostatic spool

detailed description

First embodiment of double-switch thermostat valve of the present invention

1 is an exploded perspective view of the three-dimensional structure of the present invention, which shows that it is composed of a cylindrical cavity 1, an outer sleeve 2, a thermostatic valve core 3, and a double-switching valve core 4, wherein the thermostatic valve core 3 and the double The switch valve core 4 is a valve core assembly of the prior art, including a double switch knob and a temperature control knob not shown in the drawings, which are common accessories in the prior art (for example, the utility model patent number: CN201120579550. 5 The patent is a double-switching spool 4) developed by the applicant. Figure 3 is a four-hole position diagram of the hot and cold water inlet and outlet water of the bottom surface of the double-switching valve core chamber of the columnar cavity 1 (the switch of the thermostatic valve is generally disposed at the left end), and Figure 2 is along the line AA of Figure 3. Cross-sectional views, Figures 4, 5 and 2 show the external and internal structure of the cylindrical cavity 1.

The thermostatic valve core 3 comprises an assembly of a prior art component such as a housing, a temperature sensor, a temperature regulating sliding sleeve, a biasing spring, a valve stem temperature adjusting thread subassembly and a sealing ring, and the double switching valve core 4 comprises A moving piece and a fixed piece having two pairs of inlet and outlet holes, and an assembly of a chassis, a dial, a casing and a sealing ring of the prior art.

The valve body is composed of a cylindrical cavity 1 and an outer sleeve 2, and the outer sleeve 2 is sleeved and fixed on the outer peripheral surface of the cylindrical cavity 1. The right and left ends of the outer sleeve 2 are provided with a certain distance of coldness. The hot water enters the OL, H and the mixed water outlet M and respectively corresponds to the cold and hot water inlet zone L1, HI and the mixed water outlet zone M1 on the columnar cavity 1 (the hot and cold water inlet of the thermostatic valve is generally Left hot right cold), one end (right end) of the inner cavity of the columnar cavity 1 is fixed with a thermostatic valve core 3, and the other end (left end) is fixed with a double switch valve core 4, and the two valve cores are respectively combined with a thermostat knob and a double switch knob Phase fitting, for temperature regulation and switching, and flow adjustment, four annular grooves are arranged on the outer peripheral surface of the cylindrical cavity 1, and four 0-rings (not shown) may be respectively set to form three segments of each other. Separate annular cavities, which are cold, hot water inlet zone L1, HI and mixed water outlet zone M1, and respectively with cold and hot water on the outer sleeve 2 into the OL, H and mixed water outlets M corresponds to the outer sleeve 2 to form an inlet and outlet water passage, and the hot water inlet area HI has a hot water outlet hole H2 and The bottom of the double-switching valve core is connected to the hot water inlet hole H3 of the double-switch valve body 4, and the cold water inlet area L1 has a cold water area water outlet hole L2 and is inserted into the double-switch from the bottom of the thermostatic valve core. The cold water inlet hole L3 is connected, and in the mixed water outlet area M1, the mixed water outlet hole M2 penetrates into the mixed water outlet passage M3 at the bottom of the thermostatic valve core, and heat is provided at one end of the outer peripheral surface of the columnar cavity 1 near the thermostatic valve core 3. The water chamber H6 and the cold water chamber L6 are similar to rectangular recesses, wherein the hot water chamber H6 is provided with hot water inlet holes H5 and hot water at both ends of the longitudinal direction of the cylindrical chamber 1. The chamber outlet hole H7, the former penetrates from the bottom of the thermostatic valve core 3 and communicates with the hot water outlet hole H4 of the double-switch valve body 4, and the latter directly penetrates the hot water inlet chamber H8 of the thermostatic valve core 3, wherein the cold water The cavity L6 is provided at both ends of the longitudinal direction of the columnar cavity 1 with a cold water chamber water inlet hole L5 and a cold water chamber water outlet hole L7. The former penetrates from the bottom of the thermostatic valve core 3 and communicates with the cold water outlet hole L4 of the double switch valve core 4, The latter directly penetrates into the cold water inlet chamber L8 of the thermostatic valve core 3, and the two recessed cavities are respectively embedded in the outer peripheral surface notch of the cylindrical cavity 1 and are sealed from each other by a sealing ring seal attached to the inner wall of the outer sleeve 2. At the same time, it is also sealed from the cold water inlet area L1. The flow channels formed by the respective cavities described above are formed by the cylindrical cavity 1 and the outer sleeve 2 and the sealing ring.

When the double-switching valve core 4 is in the open position, the hot water inlet hole H3 and the hot water outlet hole H4 are communicated. At this time, the hot water sequentially enters the hot water inlet H of the outer sleeve 2, and the columnar cavity 1 Hot water zone Hl, hot water outlet hole H2, hot water inlet hole H3 of double-switch valve plug 4, hot water outlet hole H4 of double-switching valve core 4, and hot water inlet hole H5 of columnar cavity 1 The hot water chamber H6 is entered, and then enters the hot water inlet chamber H8 of the thermostatic valve core 3 through the hot water chamber outlet hole H7.

At the same time, the cold water inlet hole L3 of the double-switch valve body 4 communicates with the cold water outlet hole L4. At this time, the cold water sequentially enters the cold water inlet L of the outer sleeve 2, the cold water zone L1 of the columnar cavity 1, and the water outlet hole of the cold water zone. L2, the cold water inlet hole L3 of the double-switching valve core 4, enters the cold water chamber L6 through the cold water outlet hole L4 of the double-switch valve body 4, and the cold water chamber inlet hole L5 of the cylindrical cavity 1, and then enters through the cold water chamber outlet hole L7. The cold water inlet chamber L8 of the thermostatic valve core 3.

When the hot and cold water entering the thermostatic valve core 3 is proportionally adjusted and thermostated, it flows into the mixed water outlet passage M3 at the bottom of the thermostatic valve core 3, and then flows into the mixed water outlet region M1 through the mixed water outlet hole M2, and finally passes through the outer sleeve 2 The mixed water outlet M flows out.

The channel position of the hot and cold water flowing in the embodiment of the present invention is only set in the manner that the cold water inlet and outlet holes of the double-switching valve core and the hot water inlet and outlet holes are adjacent to each other, and the two water outlet holes of the hot and cold water are also adjacent. If the two outlet holes of the hot and cold water are in a diagonal position, then the hot water chamber and the cold water chamber of the thermostatic valve core in this embodiment are also adjusted to a diagonal position and the corresponding channel positions are adjusted at the same time. Just fine. In addition, the shape and specific position of the seal ring are not necessarily limited. For example, the mixed water outlet area of the cylindrical cavity in the drawing of the embodiment is defined by two axial rings sealed by an axial seal so as to be different. The outer sleeve of the valve can use the same cylindrical cavity when discharging water in different directions. If the fixed cylindrical cavity is fixed, only a partial curved sealing ring surrounding the mixed water outlet of the outer sleeve, such as hot water chamber or cold water, can be used. The cavity can also be reduced by a 0-ring, which is easily accomplished by those skilled in the art in accordance with the teachings of the present invention, and will not be described again herein. Second embodiment of double-switch thermostat valve of the present invention

The columnar cavity has other structures, as shown in Figures 6 and 7, on the basis of the above example, a heat is provided in a cavity corresponding to the hot water inlet H of the outer sleeve 2, including the heat. The partial annular cavity with the smallest area of the water inlet H and the hot water outlet H2 is surrounded by the notch of the sealing ring, that is, the hot water zone H1, outside the partial annular cavity, the water outlet hole L2 in the cold water zone A cooling water passage L9 is provided on the outer peripheral surface of the cylindrical cavity 1 on the passage communicating with the cold water inlet hole L3 of the double switch, and the hole can overflow the cold water leading to the double switch valve core to the outer peripheral surface of the cylindrical cavity 1. Above, and surrounded by hot water HI Outside the partial annular cavity, the temperature of the outer sleeve 2 can be lowered to avoid burns. In addition, in this example, the position of the water inlet and outlet of the double-switching valve core is adjusted to another position, that is, the positions of the two water outlet holes are diagonal, and the heat in the first embodiment is changed accordingly. The water chamber H6 and the cold water chamber L6 are also set to diagonal positions, and this change does not affect the thermostatic valve.

The third embodiment of the double switch thermostat valve of the present invention

As shown in FIGS. 8 and 9, on the basis of the first embodiment, only two O-rings are provided on the outer peripheral surface of the cylindrical cavity 1 at both ends, except for the hot water between the two O-rings. In addition to the chamber H6 and the cold water chamber L6, there are two partial annular cavities of a hot water zone HI and a mixed water outlet zone M1, respectively comprising a hot water inlet H and a mixed water outlet M of the outer sleeve 2, and the rest of the outer peripheral surface In the cold water zone L1, since the cold water zone L1 can surround the hot water zone H1, the temperature of the outer sleeve 2 can be lowered to avoid burns.

In order to reduce the surface area of the hot water zone HI, the two partial annular cavities are regions which respectively include the hot water inlet H and the hot water zone water outlet hole H2, the principle of which is the same as previously described. In the above embodiment, the water intake mode of the left hot right cold and the conventional use of the switch at the left end and the thermostatic valve core at the right end are adopted. If the water inlet mode and switch of the left hot right cold are changed to the right end, the thermostatic valve core is used. In the left end, or the water inflow mode of the left cold right heat, etc., it can be adjusted on the basis of the above embodiments, and it is also easy for a person skilled in the art to perform the prompt according to the present invention, that is, not here. Narration.

In summary, the double-switch thermostatic valve of the invention has simple process and low cost, and is applied to the coaxial structure of the horizontal thermostatic valve body, realizing the true double-switch and double-flow control, due to the hot and cold water. Synchronous uniform adjustment of the inlet flow rate ensures the constant temperature accuracy of the thermostatic valve. At the same time, since the double-switching spool is placed at the inlet end, it solves the problem of countercurrent waterlogging caused by the imbalance of the inlet pressure when the thermostatic valve is closed. , the check valve is omitted. Industrial applicability

The double-switching valve core and the thermostatic valve core of the invention and the thermostatic valve formed by the cooperation with the inner and outer valve bodies have novel and practical structure, wherein the columnar cavity can be processed by die casting or plastic injection, the process is simple, the cost is low, and the outer sleeve The manufacturing process is also relatively simple, and it is applied to the coaxial structure of the horizontal thermostatic valve, realizing the true double switch and double flow control, and the thermostatic valve is ensured due to the synchronous and uniform adjustment of the flow rate of the hot and cold water. The constant temperature accuracy solves the problem of water in the water due to the imbalance of the inlet pressure. among them:

The solution with the four-way type 0 sealing ring of the invention also has the following remarkable effects: the two 0-type sealing rings of the middle portion are combined with the outer sleeve to form a mixed water outlet area, and the outer sleeve and the columnar cavity are adopted. The columnar structure makes the mixed water outlet area an annular structure, so that the mixed water outlet on the outer sleeve can be opened at any position 360 degrees along the outer circumference of the outer sleeve. The thermostatic valve is applicable to a variety of different water discharge directions. The same columnar cavity can be used for both the water and the bottom water without the need to design a columnar cavity of various specifications.

The solution with a partial cavity of the present invention also has the following significant effects:

Obviously, it has the advantages of the above-mentioned four-way type 0 sealing ring scheme, and has the characteristics of reducing the hot water chamber area, thereby lowering the temperature of the outer sleeve and avoiding burns.

The two-type sealing ring scheme of the present invention also has the following remarkable effects:

Obviously, it also has the feature of reducing the temperature of the hot water chamber to reduce the temperature of the outer sleeve and avoiding burns; compared with the solution of the local cavity, it does not require the cooling water through hole in the cold water region inside the columnar cavity, but through The outer peripheral surface of the cylindrical cavity surrounds each cavity with cold water, and the cooling effect is better.

Claims

Claim

A double-switch thermostatic valve comprising a thermostatic valve core 3, a double-switching valve core 4, a double-switching knob, a temperature-adjusting knob and a valve body, wherein the thermostatic valve core 3 comprises a housing, a temperature sensor, a driving rod, a temperature regulating sliding sleeve, a biasing spring, a valve stem temperature regulating thread subassembly and a sealing ring; the double switching valve core 4 comprises a moving piece and a fixed piece having two pairs of inlet and outlet holes, and a chassis in the prior art, Dial, housing and seals,

One end of the inner cavity of the columnar cavity 1 (right end) is fixed with a thermostatic valve core 3, and the other end (left end) is fixed with a double-switching valve core 4, and the thermostatic valve core 3 and the double-switching valve core 4 are respectively combined with a thermostat knob and The two-switch knob is fitted to adjust the temperature and switch and the flow rate adjustment, and the columnar cavity 1 is used for introducing the hot and cold water entering the outer sleeve 2 into the double-switch valve core 4, respectively, through the double-switch valve core 4 After the switch and the flow rate are adjusted, they are respectively introduced into the hot and cold water inlet chamber of the thermostatic valve core 3, and then the mixed water is cooled at a constant temperature by the adjustment of the thermostatic valve core 3.

2. The dual switch thermostat valve of claim 1 wherein:

The valve body is composed of a cylindrical cavity 1 and an outer sleeve 2, the right end of the inner cavity of the cylindrical cavity 1 is fixed with a thermostatic valve core 3, the left end is fixed with a double switch valve core 4, a thermostatic valve core 3 and a double switch The two spools of the spool 4 are respectively combined with the thermostat knob and the double switch knob for temperature regulation, switching and flow regulation;

The cold water inlet zone L1 has a cold water outlet hole L2, and the cold water outlet hole L2 communicates with the inlet hole of the double-switch valve plug 4 via the cold water inlet passage L3, and the cold water inlet passage L3 is located in the thermostatic valve core 3 bottom and isolated from the thermostatic valve core 3; The mixed water outlet hole M2 is opened in the annular cavity of the mixed water outlet area M1, and the mixed water outlet hole M2 is connected to the outlet hole of the bottom of the thermostatic valve core 3 via the mixed water outlet passage M3, and is passed through the thermostatic valve core 3 The adjusted mixed water enters the mixed water outlet area from the outlet hole, and then flows out through the mixed water outlet M of the outer sleeve 2;

And a sealing ring is embedded in the outer circumferential surface of the cylindrical cavity 1 at a position of the hot water chamber H6 and the cold water chamber L6 (not shown in the figure, only the corresponding notch is marked), the sealing The ring is separated from the inner wall of the outer sleeve 2 to separate the hot water chamber H6 and the cold water chamber L6; and the sealing ring also seals the hot water chamber H6 and the cold water chamber L6 from the cold water inlet region L1.

The water passages formed by the above-mentioned respective cavities (the hot water chamber H6, the cold water chamber L6, and the three recesses formed by the annular grooves) are all the cylindrical cavity 1 and the outer sleeve 2 and the sealing ring. form.

3. A two-switch thermostat valve according to claim 2, characterized in that

A partial cavity is disposed on an outer circumferential surface of the annular cavity having the hot water outlet hole H2, and the hot water outlet hole H2 is located in the partial cavity, and the partial cavity is surrounded by a groove inlaid with a sealing ring. a sealing ring of the partial cavity and the inner wall of the outer sleeve 2 to form a hot water zone H1, and the hot water inlet H on the outer sleeve 2 communicates with the hot water zone HI;

A cooling water hole L9 is disposed in the annular cavity area outside the partial cavity, and the cooling water hole L9 is connected to the cold water inlet channel L3;

4. A two-switch thermostatic valve according to claim 3, wherein in order to reduce the surface area of the hot water zone HI, said partial annular cavity comprises said hot water inlet H and said annular cavity The area of the hot water zone with the smallest area of the water outlet hole H2.

5. A two-switch thermostat valve according to claim 1 wherein The valve body is composed of a cylindrical cavity 1 and an outer sleeve 2, the right end of the inner cavity of the cylindrical cavity 1 is fixed with a thermostatic valve core 3, the left end is fixed with a double switch valve core 4, a thermostatic valve core 3 and a double switch The two spools of the spool 4 are respectively combined with the thermostat knob and the double switch knob for temperature regulation, switching and flow regulation;

The mixed water outlet 设置, the cold water into the OL, and the hot water inlet H disposed on the outer circumferential surface of the outer sleeve 2 respectively communicate with the mixed water outlet area M1, the cold water inlet area L1, and the hot water inlet area HI to form three inlet and outlet channels. ,

Wherein: the hot water outlet hole H2 is connected to the water outlet of the double-switch valve plug 4 via the hot water inlet passage H3; the cold water outlet hole L2 is connected to the inlet hole of the double-switch valve spool 4 via the cold water inlet passage L3. The cold water inlet passage L3 is located at the bottom of the thermostatic valve core 3 and is isolated from the thermostatic valve core 3;

The water passages formed by the respective cavities (the hot water chamber H6, the cold water chamber L6, the hot water inlet region H1, the mixed water outlet region M1, and the cold water inlet region L1) are all the cylindrical chamber 1 and the outer casing. The cylinder 2 and the sealing ring are jointly formed; the hot water chamber H6 and the cold water chamber! ^, Hot water inlet zone Hl, Mixed water outlet zone M16 is separated from each other by their respective seals () and is sealed from the cold water inlet zone L1.

6. A two-switch thermostat valve according to claim 5, wherein In order to reduce the surface area of the hot water zone HI, the two partial annular cavities are respectively the area including the hot water inlet H and the hot water zone water outlet hole H2; the annular recess between the two ends of the 0-shaped seal ring The area other than the above-mentioned hot water zone Η1, mixed water zone M1, hot water chamber H6 and cold water chamber L6 is a cold water zone L1.