CN216158446U - Thermostatic valve - Google Patents
Thermostatic valve Download PDFInfo
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- CN216158446U CN216158446U CN202121592472.2U CN202121592472U CN216158446U CN 216158446 U CN216158446 U CN 216158446U CN 202121592472 U CN202121592472 U CN 202121592472U CN 216158446 U CN216158446 U CN 216158446U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 248
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 239000012188 paraffin wax Substances 0.000 claims description 22
- 230000007704 transition Effects 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 5
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical group [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 description 13
- 230000008859 change Effects 0.000 description 9
- 230000006872 improvement Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000035484 reaction time Effects 0.000 description 5
- 239000012528 membrane Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical group [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Temperature-Responsive Valves (AREA)
Abstract
The utility model discloses a thermostatic valve, which comprises a handle mechanism, a valve core base, a valve core sliding sleeve, a thermosensitive element and a return spring, wherein the valve core sliding sleeve is arranged in the valve core base to form a valve core mechanism with a hollow cavity; a flow guide ring is arranged on the valve core sliding sleeve, the hollow cavity is divided into a water mixing cavity and a thermosensitive reaction cavity from top to bottom by the flow guide ring, the water mixing cavity and the thermosensitive reaction cavity are mutually communicated, the reset spring is arranged in the water mixing cavity, the thermosensitive element is arranged in the thermosensitive reaction cavity, and a first water inlet channel and a second water inlet channel which are communicated with the water mixing cavity are arranged on the valve core mechanism; the guide ring also divides the water mixing cavity into a guide area distributed along the inner wall of the valve core sliding sleeve and a water mixing area positioned in the middle of the valve core sliding sleeve, and the guide area is communicated with the water mixing area. The utility model realizes the full mixing exchange of cold water and hot water and the full heat exchange of mixed water and the thermosensitive element, changes the stress mode of the valve core sliding sleeve and improves the adjustment accuracy.
Description
Technical Field
The utility model relates to the field of bathrooms, in particular to a thermostatic valve.
Background
As shown in fig. 1, the temperature adjustment principle of the conventional thermostatic faucet is that hot and cold water pressures are adopted to respectively push a sliding sleeve 1 ', wherein hot water and cold water respectively enter a thermosensitive element 2' from two ends of the sliding sleeve 1 ', a hot water inlet is arranged at one end close to the thermosensitive element 2', the temperature of outlet water is set by the position where the thermosensitive element 2 'generates thermal expansion pre-thrust and the elastic force of a return spring 3' reach a balanced state at the temperature, and when the external water inlet pressure and the external temperature change introduce the temperature change of mixed water, the thermosensitive element 2 'generates thermal expansion and cold contraction reaction therewith, so that the original force balance is broken, the sliding sleeve 1' is pushed to axially move to adjust the proportion of the hot water and the cold water, and the temperature of the outlet water is kept stable. For example, when sensing the temperature rise of the mixed water, the thermo element 2 ' expands and compresses the return spring 3 ' to move the sliding sleeve 1 ' to the left, thereby closing the hot water inlet flow rate, and simultaneously increasing the cold water inlet flow rate, adjusting the cold and hot water ratio to stabilize the temperature fluctuation of the mixed water.
As shown in fig. 2, a thermosensitive element in the existing thermostatic faucet generally adopts a paraffin technology to realize regulation, and after standard water supply conditions (cold and hot water pressure of 0.3MPa, cold water temperature of 15-20 ℃, hot water temperature of 65-70 ℃) change, the instantaneous mixed water temperature will be suddenly high and suddenly low, and the fluctuation range is within +/-10 ℃; after the non-standard water supply condition changes, the fluctuation range exceeds +/-15 ℃, the temperature exceeds the temperature instantly accepted by human bodies, the body feels cold and hot, and the fluctuation time in the large range can be maintained at about 5 seconds.
The reason for this is mainly included in the following three aspects, with reference to fig. 1 and 2:
firstly, the control principle of the traditional waterway thermostatic faucet is that cold water and hot water respectively enter the positions of the thermosensitive elements from two ends of the sliding sleeve, the hot water inlet is close to the thermosensitive element, and the cold water and the hot water flow away without fully exchanging heat around the thermosensitive element, so that the thermosensitive element does not react according to the temperature information of mixed water at a terminal, but reacts according to the temperature of the hot water which is not fully exchanged.
Secondly, cold and hot water enters into near the thermal element respectively from the sliding sleeve both ends, and the stress balance equation of sliding sleeve is: pH+κ*Δx＝PC+ λ Δ x, where PHIs the pressure of the hot water, PCThe pressure of cold water, lambda is the expansion coefficient of the thermosensitive element, kappa is the elastic coefficient of the spring, and deltax is the displacement. It should be noted that the stress of the sliding sleeve also includes friction, but the actual friction of the sliding sleeve is less affected by water pressure or water temperature, and the friction can be regarded as a constant in the research of the change factor affecting the displacement of the sliding sleeve. Accordingly, a sliding sleeve displacement formula can be derived: Δ x ═ pC-pH) V (. lamda-. kappa.), giving: the displacement variable of the sliding sleeve is in direct proportion to the pressure difference ratio of the cold water and the hot water, and the larger the pressure difference ratio is, the larger the displacement variable is. Meanwhile, a mixed water temperature change relational expression can be obtained according to the law of energy conservation: delta TM∝Δx*(TH-TC) Thus, it follows: the greater the displacement amount Deltax, the greater the amount of change in the temperature of the mixed water DeltaTMThe larger the size.
Thirdly, the thermosensitive element of the traditional waterway thermostatic faucet adopts a rod-shaped design, so that the heat exchange efficiency is low, and the temperature hysteresis exists.
Therefore, when the traditional waterway thermostatic faucet is in a moment of water supply conditions, the thermal sensitive element generates expansion and contraction strain in a temperature field with uneven cold and heat, so that the temperature of outlet water is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a thermostatic valve which can realize the whole-course constant temperature of a thermostatic faucet, particularly solve the problem that the water inlet pressure of cold and hot water and the temperature of the cold and hot water are suddenly changed and suddenly cooled and suddenly heated instantly, and greatly improve the comfortable feeling of showering.
In order to solve the technical problem, the utility model provides a thermostatic valve, which comprises a handle mechanism, a valve core base, a valve core sliding sleeve, a thermosensitive element and a return spring, wherein the valve core sliding sleeve is arranged in the valve core base to form a valve core mechanism with a hollow cavity; the valve core sliding sleeve is provided with a flow guide ring, the flow guide ring divides the hollow cavity into a water mixing cavity and a thermosensitive reaction cavity which are mutually communicated from top to bottom, the reset spring is arranged in the water mixing cavity, the thermosensitive element is arranged in the thermosensitive reaction cavity, and the valve core mechanism is provided with a first water inlet channel and a second water inlet channel which are communicated with the water mixing cavity; the flow guide ring also divides the water mixing cavity into a flow guide area distributed along the inner wall of the valve core sliding sleeve and a water mixing area positioned in the middle of the valve core sliding sleeve, the flow guide area is communicated with the water mixing area so as to guide water entering along the first water inlet channel to the direction of the water outlet of the first water inlet channel, the water enters the water mixing area after being mixed for the first time in the flow guide area and then is mixed for the second time, and the valve core sliding sleeve can slide relatively along the inner wall of the valve core base under the action of the reset spring, the thermosensitive element and the mixed water in the water mixing cavity so as to adjust the water inflow of the first water inlet channel and the second water inlet channel.
As an improvement of the above scheme, the cross section of the flow guide ring is an L-shaped cross section, and the L-shaped cross section includes a first cross section and a second cross section which are perpendicular to each other; one end of the first section is connected with the valve core sliding sleeve, the other end of the first section is connected with one end of the second section, the other end of the second section is of a convex arc structure, the joint of the first section and the second section is in arc transition, and the second section and the water outlet of the first water inlet channel are oppositely arranged.
As an improvement of the scheme, the arc transition is arc transition, and the convex arc structure is an arc structure.
As an improvement of the scheme, the thermosensitive element is a paraffin temperature sensing ring.
As an improvement of the above scheme, the thermosensitive element comprises an annular base, paraffin, a membrane and a piston; the paraffin wax injection valve is characterized in that a mixed water outlet is formed in one end of the annular base, the other end of the annular base is connected with one end of the piston, the other end of the piston is connected with the flow guide ring on the valve core sliding sleeve, the side wall of the annular base is of a hollow structure, and the paraffin wax is arranged in the hollow structure and is connected with the piston through the diaphragm.
As an improvement of the scheme, the thermosensitive element is a nickel titanium memory alloy spring.
As an improvement of the scheme, the valve core base comprises a valve core base and a valve core outer sleeve, the valve core base is of a hollow structure, the valve core outer sleeve is arranged between the valve core base and the valve core sliding sleeve, and the valve core sliding sleeve can slide relatively along the inner wall of the valve core outer sleeve.
As an improvement of the scheme, the side walls of the valve core base, the valve core outer sleeve and the valve core sliding sleeve are respectively provided with a first water inlet and a second water inlet, the first water inlets of the valve core base, the valve core outer sleeve and the valve core sliding sleeve are sequentially communicated to form a first water inlet channel, and the second water inlets of the valve core base, the valve core outer sleeve and the valve core sliding sleeve are sequentially communicated to form a second water inlet channel.
The implementation of the utility model has the following beneficial effects:
the cold water and the hot water are guided and mixed for multiple times, so that the mixed water is fully mixed before being contacted with the thermosensitive element, the temperature of the mixed water is approximate to that of the mixed water finally output by the thermostatic valve, the cold water and the hot water can be positively and negatively connected (only a valve core sliding sleeve needs to be replaced), the position requirement is avoided, and the flexibility is strong;
furthermore, the thermosensitive element of the utility model is of an annular structure, so that the heat exchange area is greatly increased, and the reaction time of the thermosensitive element is shortened.
In addition, the four stress factors of the valve core sliding sleeve are simplified into three (the thrust of mixed water in the water mixing cavity, the expansion coefficient of the thermosensitive element and the elastic coefficient of the spring), so that the sliding sleeve can be adjusted quickly, new balance can be achieved more easily, and the reaction time is shorter.
Drawings
FIG. 1 is a schematic view of a prior art thermostatic valve;
FIG. 2 is a schematic diagram of the mixed water temperature of a prior art thermostatic valve;
FIG. 3 is a zone division view of the thermostatic valve of the present invention;
FIG. 4 is a cross-sectional view of the thermostatic valve of the present invention;
fig. 5 is a cross-sectional view of a deflector ring in the thermostatic valve according to the utility model;
FIG. 6 is a cross-sectional view of a thermo-sensitive element in the thermostat valve of the present invention;
fig. 7 is a schematic diagram of the temperature of the mixed water of the thermostatic valve of the utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 3 and 4, the thermostat valve of the present invention includes a handle mechanism 4, a spool base 5, a spool sleeve 1, a thermosensitive element 2, and a return spring 3. The valve core sliding sleeve 1 is arranged in the valve core base 5 to form a valve core mechanism with a hollow cavity; the valve core sliding sleeve 1 is provided with a flow guide ring 6, the flow guide ring 6 divides a hollow cavity into a water mixing cavity and a thermosensitive reaction cavity N which are mutually communicated from top to bottom, the reset spring 3 is arranged in the water mixing cavity, the thermosensitive element 2 is arranged in the thermosensitive reaction cavity N, and the valve core mechanism is provided with a first water inlet channel 11 and a second water inlet channel 12 which are communicated with the water mixing cavity; meanwhile, the flow guide ring 6 divides the water mixing cavity into a flow guide area M1 distributed along the inner wall of the valve core sliding sleeve 1 and a water mixing area M2 located in the middle of the valve core sliding sleeve 1, and the flow guide area M1 is communicated with the water mixing area M2.
When the thermostatic valve is started, hot water and cold water are respectively input into the first water inlet channel 11 and the second water inlet channel 12, wherein when the hot water is input into the first water inlet channel 11, the cold water is input into the second water inlet channel 12; when cold water is supplied to the first water inlet passage 11, hot water is supplied to the second water inlet passage 12.
It should be noted that the thermo-sensitive element 2 in the conventional thermostatic valve is generally regulated and controlled by using a paraffin technology, and since paraffin is set according to the maximum coefficient of volume expansion in the body temperature phase change region of the human body, a left-hot-right-cold mode is required when the thermostatic valve is externally connected with cold water and hot water in the prior art, and the thermostatic valve fails if a left-cold-right-hot reverse mode is adopted. Compared with the prior art, the thermostatic valve has the advantages that when cold water and hot water are externally connected, the cold water and the hot water can be positively and negatively connected (only the valve core sliding sleeve needs to be replaced), the position requirement is avoided, and the flexibility is high.
In the temperature adjusting process, water entering the water mixing cavity through the first water inlet channel 11 impacts the guide ring 6 and flows to the direction of a water outlet of the second water inlet channel 12 along the guide direction under the action of the guide ring 6; then, the water after diversion and the water entering the water mixing cavity through the second water inlet channel 12 are mixed for the first time in the diversion area M1 of the water mixing cavity to form mixed water; then, the mixed water after primary mixing enters a water mixing area M2 of the water mixing cavity for secondary mixing; then the mixed water after secondary mixing enters a thermosensitive reaction cavity N to form a quasi-constant temperature field and contacts with a thermosensitive element 2 in the thermosensitive reaction cavity N; at the moment, the thermosensitive element 2 deforms under the action of the mixed water after secondary mixing, so that the force applied to the valve core sliding sleeve 1 by the thermosensitive element 2 is changed; correspondingly, the valve core sliding sleeve 1 relatively slides along the inner wall of the valve core base 1 under the action of the thermosensitive element 2, the mixed water in the water mixing cavity and the return spring 3 so as to adjust the water inflow of the first water inlet channel 11 and the second water inlet channel 12; and finally, the mixed water after the secondary mixing enters the thermosensitive reaction chamber N to be mixed for three times and then is discharged.
The stress balance equation of the existing valve core sliding sleeve 1 is as follows: pH+κ*Δx＝PCThe + λ × Δ x, that is, the stress factors of the conventional valve core sliding sleeve 1 relate to four of hot water pressure, cold water pressure, expansion coefficient of the thermal sensitive element and elastic coefficient of the spring.
Different from the prior art, the stress heat balance equation of the valve core sliding sleeve 1 is as follows: λ Δ x ═ PM+ κ Δ x, where Δ x is the displacement of the spool sleeve, pMThe thrust of the mixed water in the water mixing cavity is shown as lambda, the expansion coefficient of the thermosensitive element is shown as lambda, and the elastic coefficient of the spring is shown as kappa. It should be noted that the stress of the sliding sleeve also includes friction, but the actual friction of the sliding sleeve is less affected by water pressure or water temperature, and the friction can be regarded as a constant in the research of the change factor affecting the displacement of the sliding sleeve. That is, the stress factor of the valve core sliding sleeve 1 in the utility model relates to three of the thrust of the mixed water in the water mixing cavity, the expansion coefficient of the thermosensitive element and the elastic coefficient of the spring, thereby realizing the simplification of the stress factorThe quick adjustment of the valve core sliding sleeve 1 is convenient, the new balance is easier to achieve, and the reaction time is shorter.
Accordingly, according to the above force balance equation, a displacement formula of the valve core sliding sleeve 1 of the present invention can be obtained: Δ x ═ pMV (. lamda. -kappa.). Analytically, the displacement formula is as follows: the displacement variation of the valve core sliding sleeve 1 is related to the pressure pushing of mixed water in the water mixing cavity, and has no direct relation with the independent cold water pressure or hot water pressure and no relation with the pressure difference ratio of the two. Therefore, the cold and hot water pressure difference resisting capacity of the utility model is superior to that of a constant temperature faucet designed by a traditional waterway, the application range is wider, and the utility model is particularly suitable for the market of solar water heaters.
In conclusion, the mixed water after the secondary mixing realizes the full mixing of the cold water and the hot water, and the temperature of the mixed water is close to that of the mixed water after the third mixing, so that the thermosensitive element 2 is arranged at the position where the ambient temperature is close to the terminal mixed water temperature field, the adjustment is performed approximately according to the mixed water discharged from the mixed water outlet, and the accuracy is high.
Further, in the present embodiment, the valve core base 5 includes a valve core base 51 and a valve core outer sleeve 52, the valve core base 51 is a hollow structure, the valve core outer sleeve 52 is disposed between the valve core base 51 and the valve core sliding sleeve 1, and the valve core sliding sleeve 1 can relatively slide along an inner wall of the valve core outer sleeve 52. Meanwhile, the side walls of the valve core base 51, the valve core outer sleeve 52 and the valve core sliding sleeve 1 are respectively provided with a first water inlet and a second water inlet, the first water inlets of the valve core base 51, the valve core outer sleeve 52 and the valve core sliding sleeve 1 are sequentially communicated to form a first water inlet channel 11, and the second water inlets of the valve core base 51, the valve core outer sleeve 52 and the valve core sliding sleeve 1 are sequentially communicated to form a second water inlet channel 12.
As shown in fig. 5, the cross section of the flow guide ring 6 in the present invention is an L-shaped cross section, the L-shaped cross section includes a first cross section 61 and a second cross section 62 which are perpendicular to each other, one end of the first cross section 61 is connected to the valve core sliding sleeve 1, the other end of the first cross section 61 is connected to one end of the second cross section 62, the other end of the second cross section 62 is a convex arc structure, the connection between the first cross section 61 and the second cross section 62 is an arc transition, and the second cross section 62 is disposed opposite to the water outlet of the first water inlet channel 11.
Specifically, water entering the mixing chamber via the first water inlet channel 11 flows along the first cross-sectional section 61; when the water reaches the joint of the first section 61 and the second section 62, the water flows to the water outlet direction of the second water inlet channel 12 along the diversion direction to be mixed under the diversion effect of the arc transition position. In addition, the mixed water after primary mixing enters a water mixing area of the water mixing cavity along the flow guiding direction under the flow guiding effect of the convex arc position for secondary mixing and then enters the thermosensitive reaction cavity N.
It should be noted that the water outlet of the first water inlet channel 11 faces the flow guide ring 6, so that under the flow guide effect of the flow guide ring 6, water entering the water mixing cavity through the first water inlet channel 11 is firstly guided to the right by utilizing the coanda effect and exchanges heat with water in the second water inlet channel 12 at the flow guide zone M1 of the water mixing cavity to form mixed water; then, the mixed water after primary mixing is drained to the left side of the valve core sliding sleeve 1 by utilizing the coanda effect again; then, the mixture is further mixed in a water mixing area M2 of the water mixing cavity through the valve core sliding sleeve 1, and then enters the heat-sensitive reaction cavity N on the left side of the valve core sliding sleeve 1. In the process, the heat exchange time of the cold water and the hot water is longer than that of the prior art, so that the temperature field around the thermosensitive element 2 is close to the terminal mixed water temperature field to form a quasi-constant temperature field.
Preferably, the arc transition is circular arc transition and the convex arc structure is a circular arc structure, so that the flow guiding effect can be further improved.
In addition, in order to better realize heat exchange, the thermosensitive element 2 of the present invention may be designed in a ring structure, which greatly increases the heat exchange area, thereby speeding up the reaction time of the thermosensitive element 2. Specifically, the thermosensitive element 2 may be a paraffin temperature sensing ring or a nitinol spring, but is not limited thereto and may be selected according to actual conditions.
As shown in fig. 6, in the present embodiment, the thermal element 2 includes an annular base 21, paraffin 22, a membrane 23 and a piston 24, one end of the annular base 21 is provided with a mixed water outlet 25, the other end of the annular base 21 is connected with one end of the piston 24, the other end of the piston 24 is connected with the flow guide ring 6 on the valve core sliding sleeve 1, a side wall of the annular base 21 is a hollow structure, and the paraffin 22 is disposed in the hollow structure and connected with the piston 24 through the membrane 23.
After entering the thermosensitive reaction chamber N, the mixed water is divided into two paths to be respectively contacted with the thermosensitive element 2 in the quasi-constant temperature field, wherein one path flows along the inner wall of the thermosensitive element 2, and the other path flows along the outer wall of the thermosensitive element 2, namely, the inner wall and the outer wall of the thermosensitive element 2 exchange heat with the mixed water simultaneously, so that the annular base 21 fully conducts the temperature of the mixed water in the quasi-constant temperature field to the paraffin 22, the heat exchange area of the thermosensitive element 2 is greatly increased, and the reaction speed of the paraffin 22 is increased; meanwhile, the paraffin 22 deforms according to the temperature of the mixed water, and drives the die 23 to adjust the real-time position of the piston 24; then, the piston 24 drives the valve core sliding sleeve 1 through the flow guide ring 6 to change the stress state of the valve core sliding sleeve 1. Preferably, the annular base 21 is made of red copper, so that the thermal conductivity is good, and the accurate sensing of the paraffin 22 to the temperature can be ensured. Meanwhile, the diaphragm 23 is a rubber diaphragm, so that the diaphragm is easy to deform and has good sealing property.
For example, after the paraffin 22 is heated and expanded, the paraffin 22 extrudes the die 23, meanwhile, the die 23 pushes the piston 24, and the piston 24 applies a thrust to the valve core sliding sleeve 1 through the flow guide ring 6, so that the force applied to the valve core sliding sleeve 1 changes and generates displacement, thereby adjusting the water inflow of the first water inlet channel 11 and the second water inlet channel 12, and realizing thermostatic control.
For another example, after the paraffin 22 is cooled and contracted, the paraffin 22 does not extrude the die 23, meanwhile, the die 23 does not push the piston 24, and the piston 24 does not apply a thrust to the valve core sliding sleeve 1 through the flow guide ring 6, so that the stress of the valve core sliding sleeve 1 changes and generates displacement, and the water inflow of the first water inlet channel 11 and the second water inlet channel 12 is adjusted, thereby realizing thermostatic control.
As shown in figure 7, the thermostatic valve can control the fluctuation of the outlet water temperature within the range (plus or minus 1 ℃) which can be born by a human body when the water supply condition changes, so that the thermostatic faucet can be kept at constant temperature in the whole process, and the comfort of showering is greatly improved.
In conclusion, the cold water and the hot water are guided and mixed for multiple times, so that the mixed water is fully mixed before being contacted with the thermosensitive element, the temperature of the mixed water is approximate to that of the mixed water finally output by the thermostatic valve, the cold water and the hot water can be connected in a positive and negative mode (only a valve core sliding sleeve needs to be replaced), the position requirement is avoided, and the flexibility is strong; meanwhile, the four stress factors of the valve core sliding sleeve are simplified into three (the thrust of mixed water in the water mixing cavity, the expansion coefficient of the thermosensitive element and the elastic coefficient of the spring), so that the sliding sleeve can be conveniently and quickly adjusted, new balance can be easily achieved, and the reaction time is shorter; in addition, mixed water enters the thermosensitive reaction cavity N, a quasi-constant temperature field is formed around the thermosensitive element 2, meanwhile, the thermosensitive element 2 adopts an annular design, the heat exchange area of the thermosensitive element 2 is greatly increased, the reaction speed of the thermosensitive element is increased, and the mixed water can be quickly adjusted to a temperature which is comfortable for human body to feel and is discharged from a mixed water outlet in the thermosensitive reaction cavity N.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model.
Claims (8)
1. A thermostatic valve is characterized by comprising a handle mechanism, a valve core base, a valve core sliding sleeve, a thermosensitive element and a return spring, wherein the valve core sliding sleeve is arranged in the valve core base to form a valve core mechanism with a hollow cavity;
the valve core sliding sleeve is provided with a flow guide ring, the flow guide ring divides the hollow cavity into a water mixing cavity and a thermosensitive reaction cavity which are mutually communicated from top to bottom, the reset spring is arranged in the water mixing cavity, the thermosensitive element is arranged in the thermosensitive reaction cavity, and the valve core mechanism is provided with a first water inlet channel and a second water inlet channel which are communicated with the water mixing cavity;
the flow guide ring also divides the water mixing cavity into a flow guide area distributed along the inner wall of the valve core sliding sleeve and a water mixing area positioned in the middle of the valve core sliding sleeve, the flow guide area is communicated with the water mixing area so as to guide water entering along the first water inlet channel to the direction of the water outlet of the first water inlet channel, the water enters the water mixing area after being mixed for the first time in the flow guide area and then is mixed for the second time, and the valve core sliding sleeve can slide relatively along the inner wall of the valve core base under the action of the reset spring, the thermosensitive element and the mixed water in the water mixing cavity so as to adjust the water inflow of the first water inlet channel and the second water inlet channel.
2. The thermostat valve of claim 1, wherein the flow directing ring has an L-shaped cross-section including first and second cross-sectional sections that are perpendicular to each other;
one end of the first section is connected with the valve core sliding sleeve, the other end of the first section is connected with one end of the second section, the other end of the second section is of a convex arc structure, the joint of the first section and the second section is in arc transition, and the second section and the water outlet of the first water inlet channel are oppositely arranged.
3. The thermostat valve of claim 2, wherein the arcuate transition is an arc of a circle and the convex arcuate structure is an arc of a circle.
4. The thermostatic valve of claim 1, wherein said thermal element is a paraffin temperature sensing ring.
5. The thermostat valve according to claim 1 or 4, wherein the thermosensitive element comprises an annular base, a paraffin, a diaphragm and a piston;
the paraffin wax injection valve is characterized in that a mixed water outlet is formed in one end of the annular base, the other end of the annular base is connected with one end of the piston, the other end of the piston is connected with the flow guide ring on the valve core sliding sleeve, the side wall of the annular base is of a hollow structure, and the paraffin wax is arranged in the hollow structure and is connected with the piston through the diaphragm.
6. The thermostatic valve of claim 1 wherein said thermal element is a nitinol spring.
7. The thermostatic valve according to claim 1, wherein the valve core base includes a valve core base and a valve core outer sleeve, the valve core base is a hollow structure, the valve core outer sleeve is disposed between the valve core base and the valve core sliding sleeve, and the valve core sliding sleeve can slide relatively along an inner wall of the valve core outer sleeve.
8. The thermostatic valve of claim 7, wherein the side walls of the valve core base, the valve core outer sleeve and the valve core sliding sleeve are provided with a first water inlet and a second water inlet, the first water inlets of the valve core base, the valve core outer sleeve and the valve core sliding sleeve are sequentially communicated to form a first water inlet channel, and the second water inlets of the valve core base, the valve core outer sleeve and the valve core sliding sleeve are sequentially communicated to form a second water inlet channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121592472.2U CN216158446U (en) | 2021-07-13 | 2021-07-13 | Thermostatic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121592472.2U CN216158446U (en) | 2021-07-13 | 2021-07-13 | Thermostatic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216158446U true CN216158446U (en) | 2022-04-01 |
Family
ID=80836261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121592472.2U Active CN216158446U (en) | 2021-07-13 | 2021-07-13 | Thermostatic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216158446U (en) |
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2021
- 2021-07-13 CN CN202121592472.2U patent/CN216158446U/en active Active
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