CN112483684B - Water mixing valve and hot water circulation system comprising same - Google Patents
Water mixing valve and hot water circulation system comprising same Download PDFInfo
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- CN112483684B CN112483684B CN202011378899.2A CN202011378899A CN112483684B CN 112483684 B CN112483684 B CN 112483684B CN 202011378899 A CN202011378899 A CN 202011378899A CN 112483684 B CN112483684 B CN 112483684B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
- F16K27/045—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members with pivotal obturating members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/12—Arrangements for connecting heaters to circulation pipes
- F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
Abstract
The invention discloses a water mixing valve and a hot water circulating system comprising the same, wherein the water mixing valve comprises: the waterway shell is provided with a hot water end and a cold water end, and the one-way valve is arranged in the waterway shell and is communicated to the one-way valve at the cold water end from the hot water end in a one-way manner; a pathway housing including a hot water pathway and a cold water pathway; a water outlet housing connected with the pathway housing; and (4) converting the valve core. When the water mixing valve is used, cold water is discharged, so that the water heater cannot be started, the circulating pipeline and a common water faucet are integrated into a whole by the whole water mixing valve, the water using condition is not influenced, and the water using habit of a user is completely met; and the installation is convenient, and the water faucet can be connected with a hot water pipeline and a cold water pipeline like a common water faucet.
Description
Technical Field
The invention relates to a water mixing valve and a hot water circulation system comprising the same.
Background
In the prior art, when the circulating water heater is installed, a check valve needs to be installed at the farthest water using point to prevent cold water from flowing back to a hot water pipeline. There are two problems with this arrangement.
Firstly, the one-way valve is arranged at the farthest end, when cold water of a water consumption point at the farthest end is used, the one-way valve cannot be closed, and partial cold water flows out through the water heater through the one-way valve, so that the water heater is started, and unnecessary waste is caused.
Secondly, the check valve sets up alone and needs to install the disconnection of hydrologic cycle pipeline, and the installation is comparatively loaded down with trivial details, and leads to leaking easily.
Disclosure of Invention
The invention aims to overcome the defects that a water heater is started when the farthest cold water is used and a one-way valve is difficult to install in the prior art, and provides a water mixing valve and a hot water circulation system comprising the same.
The invention solves the technical problems through the following technical scheme:
a mixing valve, characterized in that it comprises:
a waterway housing having a hot water end and a cold water end,
the check valve is arranged in the waterway shell and is communicated from the hot water end to the cold water end in a one-way mode;
a pathway housing including a hot water pathway and a cold water pathway;
a water outlet housing connected with the pathway housing;
the conversion valve core is fixedly connected with the passage shell and is rotationally connected with the waterway shell, and the conversion valve core switches a communication state through rotation, wherein the conversion valve core is communicated with the hot water end and the cold water end in a first switching state to close a passage with the water outlet shell; the switching valve core communicates the hot water end and the cold water end to the hot water passage and the cold water passage in a second switching state.
This scheme is when not using water, and change-over valve core switches into first switching state, and rivers accessible water route casing keeps hot water circulation. When the water is used, the switching valve core is switched to the second switching state, water flow cannot circulate in the water channel shell through the switching valve core, and hot water cannot flow out of the hot water pipeline through the water channel shell when cold water is used, so that the water heater cannot be started, and the waste of resources is reduced.
Therefore, when the water mixing valve is used, cold water can not be discharged to cause the starting of the water heater, the circulating pipeline and the common water faucet are integrated into a whole through the whole water mixing valve, the water using condition is not affected, and the water using habit of a user is completely met; and the installation is convenient, and the water faucet can be connected with a hot water pipeline and a cold water pipeline like a common water faucet.
Preferably, the conversion valve core comprises a first rotation connection end and a second rotation connection end, wherein the first rotation connection end is rotatably connected with the hot water end, and the second rotation connection end is rotatably connected with the cold water end. This scheme rotates the rotation that the link had realized the change-over valve core through first rotation link and second, rotates the link through first rotation link and second and inserts hot water end and cold water end respectively, can realize holistic equipment.
Preferably, the first rotary connecting end is provided with a hot water inlet and a return water inlet, and the second rotary connecting end is provided with a cold water inlet and a return water outlet, wherein the hot water inlet is communicated with the hot water passage, the cold water inlet is communicated with the cold water passage, and the return water inlet is communicated with the return water outlet. From this, rotate the link through first and be connected with the hot water end and can realize the entering of hot water and return water, rotate the link through the second and be connected with the cold water end and can realize the entering of cold water and the outflow of return water, can simplify the conversion case and be connected with water route casing from this, can realize linking up of inner passage when first rotation link and second rotate the link and connect.
Preferably, the switching valve core enables the backwater inlet to be communicated with the hot water end and the backwater outlet to be communicated with the cold water end in a first switching state; the conversion valve core enables the hot water inlet to be communicated with the hot water end and the cold water inlet to be communicated with the cold water end in a second switching state.
Preferably, the switching valve core includes a cold water switching path, a hot water switching path and a return water switching path, wherein the cold water switching path is communicated with the cold water passage and the cold water inlet, the hot water switching path is communicated with the hot water passage and the hot water inlet, and the return water switching path is communicated with the return water inlet and the return water outlet. The cold water conversion path, the hot water conversion path and the backwater conversion path are arranged in the conversion valve core in a staggered manner, and each path does not influence the other path. And all integrated inside the change-over valve core, be convenient for install and replace.
Preferably, the cold water inlet is disposed adjacent to the return water inlet, and the hot water inlet is disposed adjacent to the return water outlet, wherein the cold water conversion path and the return water conversion path are separated from each other by an internal partition plate, respectively. The division by the internal partition can provide more flow passage space in the switching valve core with limited volume, and is beneficial to the flow of internal water.
Preferably, a cold water partition plate is arranged in the cold water end, and a hot water partition plate is arranged in the hot water end, wherein the switching valve core enables the hot water partition plate to block the hot water inlet and open the return water inlet in a first switching state, and enables the cold water partition plate to block the cold water inlet and open the return water outlet; the conversion valve core enables the hot water partition plate to open the hot water inlet and block the return water inlet in a first switching state, and enables the cold water partition plate to open the cold water inlet and block the return water outlet. The hot water partition plate and the cold water partition plate can be formed in the cold water end and the hot water end respectively, so that after the conversion valve core is assembled with the hot water end and the cold water end, the conversion valve core can be directly switched between the first switching state and the second switching state without extra assembling steps.
Preferably, the surfaces of the first rotating connection end and the second rotating connection end are provided with fixing grooves, sealing rings are embedded in the fixing grooves, the sealing rings seal a gap between the first rotating connection end and the hot water end, and seal a gap between the second rotating connection end and the cold water end. The sealing ring can prevent the internal water flow from escaping, and the rotation of the conversion valve core is not influenced.
Preferably, the water outlet housing is rotatably connected to the passage housing, wherein the water outlet housing is rotatably connected to the hot water passage and the cold water passage, and the flow rate between the water outlet housing and the hot water passage and the flow rate between the water outlet housing and the cold water passage are adjusted by rotation. In the first switching state of the switching valve core, water is not communicated in the hot water passage and the cold water passage, so that the rotation of the water outlet shell relative to the passage shell cannot generate any influence. In the second switching state of the switching valve core, the amount of the hot water and the cold water entering can be adjusted through the rotation of the water outlet shell relative to the passage shell, so that the water temperature meeting the requirement of a user is mixed.
Preferably, the water outlet housing includes a cold water sleeve and a hot water sleeve, wherein the cold water sleeve is sleeved on the cold water passage, and the hot water sleeve is sleeved on the hot water passage. The cold water sleeve and the hot water sleeve can quickly connect the water outlet shell with the hot water passage and the cold water passage, and are convenient to replace and disassemble.
Preferably, a limiting fixture block is arranged on the cold water passage and/or the hot water passage, a limiting groove is arranged on the cold water sleeve and/or the hot water sleeve, and the limiting fixture block is arranged in the limiting groove and used for blocking two ends of the limiting groove. The limiting clamping block can limit the rotation range of the water outlet shell, and uncontrollable factors generated in the adjusting process of a user are avoided.
Preferably, the hot water passage is provided with a hot water outlet, the cold water passage is provided with a cold water outlet, and the water outlet housing is provided with a hot mixing partition and a cold mixing partition, respectively, wherein the hot mixing partition changes the opening degree of the hot water outlet and the cold mixing partition changes the opening degree of the cold water outlet as the water outlet housing rotates relative to the passage housing. The hot mixing partition and the cold mixing partition can be formed in the cold water passage and the hot water passage respectively, so that after assembly, direct switching of the water outlet shell can be directly realized without additional assembly steps.
Preferably, the hot mixing baffle increases the degree of opening of the hot water outlet when the outlet housing is rotated in a first direction relative to the pathway housing, the cold mixing baffle decreases the degree of opening of the cold water outlet when the outlet housing is rotated in an opposite direction relative to the pathway housing, the hot mixing baffle decreases the degree of opening of the hot water outlet when the outlet housing is rotated in an opposite direction relative to the pathway housing, and the cold mixing baffle increases the degree of opening of the cold water outlet.
Preferably, the rotation axis between the outlet housing and the passage housing and the rotation axis between the waterway housing and the conversion valve core are crossed with each other. The crossed rotating axes can avoid the phenomenon that the water supply is cut off due to the fact that a user mistakenly operates and involves the switching valve core when adjusting the water outlet.
Preferably, the hot water end, the cold water passage and the hot water passage are uniformly connected to the peripheral side of the conversion valve core. Therefore, the whole volume of the water change valve is compact, and the occupied space of the water mixing valve can be reduced.
The hot water circulation system is characterized by comprising a water heater, a cold water pipeline, a hot water pipeline and the water mixing valve, wherein the cold water end is communicated with the cold water pipeline, and the hot water end is communicated with the hot water pipeline.
The positive progress effects of the invention are as follows: when the water mixing valve is used, cold water is discharged, so that the water heater cannot be started, the circulating pipeline and a common water faucet are integrated into a whole by the whole water mixing valve, the water using condition is not influenced, and the water using habit of a user is completely met; and the installation is convenient, and the water faucet can be connected with a hot water pipeline and a cold water pipeline like a common water faucet.
Drawings
Fig. 1 is a schematic perspective view of a mixing valve according to a preferred embodiment of the present invention.
Fig. 2 is a schematic side view of a mixing valve according to a preferred embodiment of the present invention.
FIG. 3 is a schematic view of a preferred embodiment of the present invention from a perspective of a diverter valve cartridge and channel housing.
FIG. 4 is a schematic view of another perspective of the diverter spool and passage housing of the preferred embodiment of the present invention.
Fig. 5 is a schematic view of the water outlet housing according to the preferred embodiment of the invention from two different viewing angles.
Fig. 6 is a schematic view of the waterway housing according to the preferred embodiment of the present invention from two different viewing angles.
Fig. 7 is a schematic view of a limiting block and a limiting groove according to a preferred embodiment of the invention.
Fig. 8 is a schematic view of the flow direction of the water circuit from a perspective of the circulation state according to the preferred embodiment of the invention.
Fig. 9 is a schematic view of the flow direction of the water circuit from another view point of the circulation state according to the preferred embodiment of the invention.
FIG. 10 is a schematic view of the waterway flow direction at a viewing angle of the mixing state according to the preferred embodiment of the present invention.
FIG. 11 is a schematic view of the waterway flow direction at another perspective of the mixing state according to the preferred embodiment of the present invention.
FIG. 12 is a schematic view of the mixing state of the present invention showing only the flow direction of the cold water.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
As shown in fig. 1 to 12, the present embodiment discloses a mixing valve, which includes: the water path shell 2, the water path shell 2 has a hot water end 21 and a cold water end 22; the check valve 5 is arranged in the waterway shell 2, and the check valve 5 is communicated from the hot water end 21 to the cold water end 22 in a one-way mode; a passage housing 3, the passage housing 3 including a hot water passage 31 and a cold water passage 32; and the water outlet shell 4 is connected with the passage shell 3.
As shown in fig. 1 to 12, the mixing valve of the present embodiment further includes a switching valve core 1, the switching valve core 1 is fixedly connected to the passage housing 3 and rotatably connected to the waterway housing 2, and the switching valve core 1 switches the communication state through rotation, wherein the switching valve core 1 communicates the hot water end 21 and the cold water end 22 in a first switching state (circulation state) to close the passage with the outlet housing 4; the switch valve body 1 connects the hot water port 21 and the cold water port 22 to the hot water passage 31 and the cold water passage 32 in the second switching state (the mixing state).
In the present embodiment, when water is not used, as shown in fig. 8 and 9, the switching valve body 1 is switched to the first switching state (circulation state), and the water flow can keep the hot water circulating through the water path housing 2. When water is used, the switching valve core 1 is switched to a second switching state (water mixing state), as shown in fig. 10 and 11, water cannot circulate in the waterway shell 2 through the switching valve core 1, hot water cannot flow out of the hot water pipeline through the waterway shell 2 when cold water is used, the water heater cannot be started, and waste of resources is reduced.
As shown in fig. 3 and 4, the switching valve core 1 of the present embodiment includes a first rotation connection end 11 and a second rotation connection end 12, wherein the first rotation connection end 11 is rotatably connected to the hot water end 21, and the second rotation connection end 12 is rotatably connected to the cold water end 22. This scheme rotates the rotation that link end 12 had realized change-over valve core 1 through first rotation link end 11 and second, rotates link end 12 through first rotation link end 11 and second and inserts hot water end 21 and cold water end 22 respectively, can realize holistic equipment.
As shown in fig. 3 and 4, the first rotary connection end 11 of the present embodiment is provided with a hot water inlet 111 and a return water inlet 112, and the second rotary connection end 12 is provided with a cold water inlet 121 and a return water outlet 122, wherein the hot water inlet 111 is communicated with the hot water passage 31, the cold water inlet 121 is communicated with the cold water passage 32, and the return water inlet 112 is communicated with the return water outlet 122. Therefore, hot water and backwater can enter the water pump by connecting the first rotary connecting end 11 with the hot water end 21, cold water can enter the water pump and backwater can flow out by connecting the second rotary connecting end 12 with the cold water end 22, so that the connection between the conversion valve core 1 and the waterway shell 2 can be simplified, and the connection of an internal passage can be realized while the first rotary connecting end 11 is connected with the second rotary connecting end 12.
As shown in fig. 3 and 4, the switching valve core 1 of the present embodiment is in the first switching state (circulation state) such that the return water inlet 112 is communicated with the hot water end 21 and the return water outlet 122 is communicated with the cold water end 22; the switch valve core 1 is in the second switching state (water mixing state) to enable the hot water inlet 111 to be communicated with the hot water end 21, and the cold water inlet 121 to be communicated with the cold water end 22.
As shown in fig. 3 and 4, the conversion valve core 1 of the present embodiment includes a cold water conversion path, a hot water conversion path, and a return water conversion path, wherein the cold water conversion path communicates with the cold water passage 32 and the cold water inlet 121, the hot water conversion path communicates with the hot water passage 31 and the hot water inlet 111, and the return water conversion path communicates with the return water inlet 112 and the return water outlet 122. The cold water conversion path, the hot water conversion path and the backwater conversion path are arranged in the conversion valve core 1 in a staggered manner, and each path has no influence. And are all integrated in the conversion valve core 1, so that the installation and the replacement are convenient.
As shown in fig. 3 and 4, the cold water inlet 121 of the present embodiment is disposed adjacent to the return water inlet 112, and the hot water inlet 111 is disposed adjacent to the return water outlet 122, wherein the cold water conversion path and the return water conversion path are separated from each other by an internal partition 131 and an internal partition 132, respectively. The division by the internal partition 131 and the internal partition 132 can provide more flow passage spaces in the volume-limited switch core 1, facilitating the flow of the internal water.
As shown in fig. 3, 4 and 6, a cold water partition 220 is disposed in the cold water end 22 and a hot water partition 210 is disposed in the hot water end 21 of the present embodiment, wherein the switching valve core 1 in a first switching state (circulation state) causes the hot water partition 210 to block the hot water inlet 111 and open the return water inlet 112, and causes the cold water partition 220 to block the cold water inlet 121 and open the return water outlet 122; the switch spool 1 in the first switching state (circulation state) causes the hot water partition 210 to open the hot water inlet 111 and block the return water inlet 112, and causes the cold water partition 220 to open the cold water inlet 121 and block the return water outlet 122. The hot water partition 210 and the cold water partition 220 may be formed in the cold water end 22 and the hot water end 21, respectively, so that after the switch core 1 is assembled with the hot water end 21 and the cold water end 22, the switch core 1 can be directly switched between the first switching state (the circulation state) and the second switching state (the mixing state) without additional assembly steps.
As shown in fig. 3 and 4, the surfaces of the first rotation connection end 11 and the second rotation connection end 12 of the present embodiment are provided with fixing grooves 14, and sealing rings are embedded in the fixing grooves 14, and seal the gap between the first rotation connection end 11 and the hot water end 21 and seal the gap between the second rotation connection end 12 and the cold water end 22. The sealing ring can prevent the inner water flow from escaping, and the rotation of the conversion valve core 1 is not influenced. Similarly, the hot water passage 31 and the cold water passage 32 of the present embodiment may be provided with the fixing groove 14.
As shown in fig. 1 and 2, the outlet housing 4 of the present embodiment is rotatably connected to the passage housing 3, wherein the outlet housing 4 is rotatably connected to the hot water passage 31 and the cold water passage 32, and the flow rate between the outlet housing 4 and the hot water passage 31 and the flow rate between the outlet housing 4 and the cold water passage 32 are adjusted by rotation. In the first switching state (circulation state) of the switch spool 1, water does not flow through the hot water passage 31 and the cold water passage 32, and therefore the rotation of the outlet housing 4 relative to the passage housing 3 does not have any influence. In the second switching state (mixing state) of the switching valve cartridge 1, the amount of hot and cold water entering can be adjusted by the rotation of the outlet housing 4 relative to the passage housing 3, so that the water temperature according with the user's requirement is mixed.
As shown in fig. 5, the outlet housing 4 of the present embodiment includes a cold water sleeve 42 and a hot water sleeve 41, wherein the cold water sleeve 42 is sleeved on the cold water passage 32, and the hot water sleeve 41 is sleeved on the hot water passage 31. The outlet case 4 can be quickly connected to the hot water passage 31 and the cold water passage 32 by the cold water bushing 42 and the hot water bushing 41, and is easily replaced and detached.
As shown in fig. 7, the cold water passage 32 and/or the hot water passage 31 of the present embodiment are provided with a limiting fixture block 30, the cold water sleeve 42 and/or the hot water sleeve 41 are provided with a limiting groove 40, and the limiting fixture block 30 is disposed in the limiting groove 40 and is used for blocking two ends of the limiting groove 40. The limiting fixture block 30 can limit the rotation range of the water outlet housing 4, and uncontrollable factors generated in the adjusting process of a user are avoided.
As shown in fig. 3 and 4, the hot water passage 31 of the present embodiment is provided with a hot water outlet 311, the cold water passage 32 is provided with a cold water outlet 321, and the outlet housing 4 is provided with a hot mixing partition 410 and a cold mixing partition 420, respectively, wherein the hot mixing partition 410 changes the opening degree of the hot water outlet 311 and the cold mixing partition 420 changes the opening degree of the cold water outlet 321 as the outlet housing 4 rotates relative to the passage housing 3. The hot mixing partition 410 and the cold mixing partition 420 may be formed in the cold water pathway 32 and the hot water pathway 31, respectively, whereby direct switching of the outlet case 4 can be directly achieved without additional assembly steps after assembly.
As shown in fig. 3, 4 and 5, when the outlet housing 4 of the present embodiment is rotated in a first direction with respect to the passage housing 3, the hot mixing partition 410 increases the opening degree of the hot water outlet 311, and the cold mixing partition 420 decreases the opening degree of the cold water outlet 321, and when the outlet housing 4 is rotated in a direction opposite to the first direction with respect to the passage housing 3, the hot mixing partition 410 decreases the opening degree of the hot water outlet 311, and the cold mixing partition 420 increases the opening degree of the cold water outlet 321.
As shown in fig. 1, the rotation axis Y between the outlet housing 4 and the passage housing 3 of the present embodiment intersects the rotation axis X between the water passage housing 2 and the switch valve body 1. The crossed rotation axes X and Y can avoid the phenomenon that the user mistakenly operates to drag the switching valve core 1 to cut off the water supply when adjusting the water outlet.
As shown in fig. 3 and 4, the hot water end 21, the cold water end 22, the cold water passage 32, and the hot water passage 31 of the present embodiment are uniformly connected to the peripheral side of the switch valve body 1. Therefore, the whole volume of the water change valve is compact, and the occupied space of the water mixing valve can be reduced.
The mixing valve of the present embodiment can be used in a hot water circulation system, and the hot water circulation system includes a water heater, a cold water pipeline, a hot water pipeline and a mixing valve, wherein the cold water end 22 is communicated with the cold water pipeline, and the hot water end 21 is communicated with the hot water pipeline.
As shown in fig. 8 and 9, when the water outlet housing 4 is pressed down, the switching valve core 1 is driven to rotate, so that the switching valve core 1 is in a circulation state when rotating to the position shown in fig. 8 and 9, and no matter which direction the water outlet housing 4 rotates relative to the passage housing 3, the water outlet housing 4 can be circulated as long as the water outlet housing 4 is ensured not to be lifted, and at the hot water end 21, the water flow pushes the check valve 5 to overcome the elastic force of the spring to form a water flow, the water heater starts, the cold water in the preheating pipeline starts (due to the valve core action of the check valve 5, the cold water cannot flow through the hot water end 21, and only can flow from the hot water end 21 to the cold water end 22), and the water flow is as shown in the figure.
When the water shell 4 is lifted up, the conversion valve core 1 is driven to rotate, so that the conversion valve core is positioned in the positions shown in fig. 10 and 11, the water is mixed (the water shell can be rotated to a small extent), and the water flows to the position shown in the figure. In the water mixing state, when the outlet housing 4 rotates relative to the passage housing 3, as shown in fig. 12, the outlet housing 4 moves to a complete cold water state, the hot water passage 31 is blocked by the outlet housing 4, hot water cannot enter, only cold water can enter and flows out from the water outlet, and at the moment, the machine cannot be started when only cold water is opened, and the same principle is also adopted when hot water is used. In the mixed state, as shown in fig. 10 and 11, both the hot water passage 31 and the cold water passage 32 are opened and mixed.
When the water mixing valve is used, cold water is discharged, so that the water heater cannot be started, the circulating pipeline and a common water faucet are integrated into a whole by the whole water mixing valve, the water using condition is not influenced, and the water using habit of a user is completely met; and the installation is convenient, and the water faucet can be connected with a hot water pipeline and a cold water pipeline like a common water faucet.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (15)
1. A mixing valve, characterized in that it comprises:
a waterway housing having a hot water end and a cold water end,
the check valve is arranged in the waterway shell and is communicated from the hot water end to the cold water end in a one-way mode;
a pathway housing including a hot water pathway and a cold water pathway;
a water outlet housing connected with the pathway housing;
the conversion valve core is fixedly connected with the passage shell and is rotationally connected with the waterway shell, and the conversion valve core switches a communication state through rotation, wherein the conversion valve core is communicated with the hot water end and the cold water end in a first switching state to close a passage with the water outlet shell; the conversion valve core communicates the hot water end and the cold water end to the hot water passage and the cold water passage in a second switching state, and the water outlet shell is rotatably connected with the passage shell, wherein the water outlet shell is respectively rotatably connected with the hot water passage and the cold water passage, and the flow between the water outlet shell and the hot water passage and the flow between the water outlet shell and the cold water passage are respectively adjusted through rotation.
2. The mixing valve of claim 1, wherein the switching spool comprises a first rotational connection end and a second rotational connection end, wherein the first rotational connection end is rotationally connected to the hot water end and the second rotational connection end is rotationally connected to the cold water end.
3. The mixing valve of claim 2, wherein the first rotary connection end is provided with a hot water inlet and a return water inlet, and the second rotary connection end is provided with a cold water inlet and a return water outlet, wherein the hot water inlet is in communication with the hot water passage, the cold water inlet is in communication with the cold water passage, and the return water inlet is in communication with the return water outlet.
4. The mixing valve of claim 3, wherein the switching spool in the first switching state places the return water inlet in communication with the hot water end and the return water outlet in communication with the cold water end; the conversion valve core enables the hot water inlet to be communicated with the hot water end and the cold water inlet to be communicated with the cold water end in a second switching state.
5. The mixing valve according to claim 3, wherein the switching valve core comprises a cold water switching path, a hot water switching path and a return water switching path, wherein the cold water switching path communicates with the cold water path and the cold water inlet, the hot water switching path communicates with the hot water path and the hot water inlet, and the return water switching path communicates with the return water inlet and the return water outlet.
6. The mixing valve of claim 5, wherein the cold water inlet is disposed adjacent to the return water inlet, and the hot water inlet is disposed adjacent to the return water outlet, wherein the cold water diversion path and the return water diversion path are separated from each other by an internal partition plate.
7. The mixing valve of claim 4, wherein a cold water partition is disposed within the cold water end and a hot water partition is disposed within the hot water end, wherein the switching spool in the first switching state causes the hot water partition to block the hot water inlet and open the return water inlet, and causes the cold water partition to block the cold water inlet and open the return water outlet; the conversion valve core enables the hot water partition plate to open the hot water inlet and block the return water inlet in a first switching state, and enables the cold water partition plate to open the cold water inlet and block the return water outlet.
8. The mixing valve according to claim 3, wherein the surfaces of the first and second rotary connecting ends are provided with fixing grooves, and sealing rings are embedded in the fixing grooves, and the sealing rings seal the gap between the first rotary connecting end and the hot water end and seal the gap between the second rotary connecting end and the cold water end.
9. The mixing valve of claim 1 wherein the outlet housing comprises a cold water sleeve and a hot water sleeve, wherein the cold water sleeve is sleeved over the cold water passageway and the hot water sleeve is sleeved over the hot water passageway.
10. The mixing valve as claimed in claim 9, wherein a limiting block is disposed on the cold water passage and/or the hot water passage, a limiting groove is disposed on the cold water sleeve and/or the hot water sleeve, and the limiting block is disposed in the limiting groove and is used for blocking two ends of the limiting groove.
11. The mixing valve of claim 1, wherein the hot water passageway is provided with a hot water outlet, the cold water passageway is provided with a cold water outlet, and the outlet housing is provided with a hot mixing partition and a cold mixing partition, respectively, wherein the hot mixing partition changes the degree of opening of the hot water outlet and the cold mixing partition changes the degree of opening of the cold water outlet as the outlet housing rotates relative to the passageway housing.
12. The mixing valve of claim 11, wherein the hot mixing baffle increases the opening of the hot water outlet when the outlet housing is rotated in a first direction relative to the passageway housing, and the cold mixing baffle decreases the opening of the cold water outlet when the outlet housing is rotated in an opposite direction relative to the passageway housing, and wherein the hot mixing baffle decreases the opening of the hot water outlet and the cold mixing baffle increases the opening of the cold water outlet when the outlet housing is rotated in an opposite direction relative to the passageway housing.
13. The mixing valve of claim 1 wherein the axis of rotation between the outlet housing and the passageway housing intersects the axis of rotation between the waterway housing and the switch core.
14. The mixing valve of claim 1, wherein the hot water end, the cold water passage and the hot water passage are uniformly connected to the peripheral side of the switching valve core.
15. A hot water circulation system comprising a water heater, a cold water line, a hot water line and a mixing valve according to any one of claims 1 to 14, wherein the cold water end is in communication with the cold water line and the hot water end is in communication with the hot water line.
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| CN202011378899.2A CN112483684B (en) | 2020-11-30 | 2020-11-30 | Water mixing valve and hot water circulation system comprising same |
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| CN202011378899.2A CN112483684B (en) | 2020-11-30 | 2020-11-30 | Water mixing valve and hot water circulation system comprising same |
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| CN112483684B true CN112483684B (en) | 2022-03-08 |
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| CN112483684A (en) | 2021-03-12 |
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