CN110864141A - Zero-cold-water mixing device - Google Patents
Zero-cold-water mixing device Download PDFInfo
- Publication number
- CN110864141A CN110864141A CN201810982974.2A CN201810982974A CN110864141A CN 110864141 A CN110864141 A CN 110864141A CN 201810982974 A CN201810982974 A CN 201810982974A CN 110864141 A CN110864141 A CN 110864141A
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- China
- Prior art keywords
- water
- valve
- pipe
- cold
- zero
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Classifications
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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
- F16K11/14—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle
- F16K11/18—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle with separate operating movements for separate closure 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
- F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
Abstract
The invention relates to a zero-cold-water mixing device which comprises a water outlet pipe, wherein the water outlet pipe is provided with a first water inlet, a second water inlet and a water outlet which are arranged at intervals; the first water inlet is connected with a hot water pipe, and the second water inlet is connected with a cold water pipe; the water-cooling water heater is characterized by further comprising a bypass pipe connected between the cold water pipe and the water inlet pipe, wherein a one-way valve is arranged in the bypass pipe; the first valve is arranged on the first water inlet; a second valve is disposed between the hot water pipe and the bypass pipe; the temperature sensing driving device is connected between the first valve and the second valve, and opens the first valve and closes the second valve when the water temperature in the hot water pipe reaches a set temperature; and when the temperature of the water in the hot water pipe is lower than a set temperature, closing the first valve and opening the second valve.
Description
Technical Field
The invention relates to the field of water heaters, in particular to a zero-cold-water structure of a water heater.
Background
A number of water heaters with zero cold water functionality are currently on the market. The method for realizing zero cold water of the water heater is to install a circulating water pump in the water heater. When the user does not use hot water, when the temperature of pipeline drops to a certain temperature, the water pump starts, lets the cold water in the pipeline flow through the water heater to the realization is with the purpose of the water preheating in the pipeline, finally lets the user open tap's instant outflow warm water, realizes zero cold water function.
For a heating and bathing dual-purpose furnace, in order to realize zero cold water of bath water, a method which is mainly adopted at present is to specially install a circulating water pump in a bath water path for realizing the zero cold water of the bath water. Therefore, the machine has the great defects that two water pumps, one heating circulating water pump and one bathing circulating water pump are arranged in the machine, so that the equipment investment is high and the energy consumption is high.
Disclosure of Invention
The invention aims to solve the technical problem of providing a zero-cold-water mixing device which realizes the zero-cold-water function by changing the pipeline structure aiming at the current situation of the prior art, thereby reducing the equipment investment, saving energy and reducing consumption.
The technical scheme adopted by the invention for solving the technical problems is as follows: the zero-cold water mixing device comprises a water outlet pipe, wherein the water outlet pipe is provided with a first water inlet, a second water inlet and a water outlet which are arranged at intervals; the first water inlet is connected with a hot water pipe, and the second water inlet is connected with a cold water pipe;
it is characterized by also comprising:
the bypass pipe is connected between the cold water pipe and the water inlet pipe, and a one-way valve for limiting water flow from the hot water pipe to the cold water pipe is arranged in the bypass pipe;
the first valve is arranged on the first water inlet and used for opening or closing the first water inlet;
the second valve is arranged between the hot water pipe and the bypass pipe and is used for switching on and off the bypass pipe;
a temperature sensing driving device connected between the first valve and the second valve, and operating with the change of water temperature, and opening the first valve and closing the second valve when the water temperature in the hot water pipe reaches a set temperature; and when the temperature of the water in the hot water pipe is lower than a set temperature, closing the first valve and opening the second valve.
Preferably, the first valve may include a valve plate stopping on the first water inlet, and a first elastic member;
one end of the valve plate can be rotatably limited on the inner wall of the hot water pipe, and the other end of the valve plate is connected with the first elastic piece;
the first elastic piece is connected with the temperature sensing driving device.
In order to facilitate the smooth action of the valve plate, the inner wall of the hot water pipe is of an arc structure corresponding to the other end of the valve plate.
Preferably, the second valve may comprise a piston radially movable within the bypass tube or on a bypass tube port, and a second resilient member;
the second elastic piece is abutted between the piston and the temperature sensing driving device;
the temperature sensing driving device is connected with the piston in a driving mode.
The temperature sensing driving device in each scheme can have various structures, preferably, the temperature sensing driving device can comprise a heat-conducting shell, a first bag body is arranged in the shell, and paraffin is filled in the first bag body; one end of the shell is in driving connection with the piston, the other end of the shell is connected with a second bag body, the second bag body is contained in a limiting groove, and the limiting groove is formed in the inner wall of the hot water pipe;
the lower port of the shell is open; correspondingly, the second bag body is provided with a through hole so that the first bag body can be accommodated in the second bag body through the through hole;
and an ejector rod is arranged in the second bag body, and the ejector rod is abutted against the first bag body and can penetrate through the through hole.
In order to conveniently drive the shell and the first elastic piece, a push plate can be connected to the outer wall of the second bag body; the push plate is provided with a through hole corresponding to the through hole;
the lower port of the shell is connected to the push plate;
the other end of the first elastic piece is connected to the push plate.
Further, the ejector rod may be connected to a base, which is accommodated in the second capsule.
To make the actuation of the drive means more sensitive, the housing may be a copper tube.
Further, the piston may be a copper piston.
Compared with the prior art, the zero-cold-water mixing device provided by the invention has the advantages that the temperature sensing driving device drives the first valve and the second valve to act, so that the water flow direction in the pipeline is changed, the zero-cold-water function is obtained, a circulating pump is avoided, the equipment investment is low, and the energy-saving and consumption-reducing effects are good.
Drawings
FIG. 1 is a longitudinal cross-sectional view of an embodiment of the invention (first valve closed, second valve open);
FIG. 2 is a longitudinal cross-sectional view of an embodiment of the invention (first valve closed, second valve half closed);
FIG. 3 is a longitudinal cross-sectional view of an embodiment of the invention (first valve open, second valve closed);
FIG. 4 is a sectional view (cold water state) of the temperature sensing driving apparatus according to the embodiment of the present invention;
fig. 5 is a sectional view (hot water state) of the temperature sensing driving apparatus according to the embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 5, the zero-cold water mixing device includes:
the water outlet pipe 1 is provided with a first water inlet 11, a second water inlet 12 and a water outlet 13 at intervals;
the hot water pipe 2 and a hot water circulation pipeline heated by the water heater are connected to the first water inlet 11.
And the cold water pipe 3 and a cold water circulation pipeline are connected to the second water inlet 12 and are used for sending cold water in a tap water pipe (not shown in the figure) into the water outlet pipe, mixing the cold water with hot water in the water outlet pipe and discharging water flow with a set temperature from the water outlet 13.
The bypass pipe 4 is connected between the cold water pipe 3 and the water inlet pipe 2 and is used for sending water flow in the hot water pipe to the cold water pipe for circulation through the bypass pipe 4 when the water temperature in the hot water pipe does not reach the set temperature; a check valve 5 for limiting the water flow from the hot water pipe 2 to the cold water pipe 3 is arranged in the bypass pipe 4.
The check valve 5 may be any one of those in the prior art as required.
And a first valve 6 disposed on the first water inlet 11 for opening or closing the first water inlet 11. The first valve 6 in this embodiment comprises a valve plate 61 which stops against said first inlet 11 and a first elastic element 62.
One end of the valve plate 61 is hinged to the inner wall of the hot water pipe 2, the other end of the valve plate 61 is connected with one end of the first elastic element 62, and the other end of the first elastic element 72 is connected with a push plate 85 of the temperature sensing driving device.
The first elastic member 62 in this embodiment is a spring. When the valve plate 61 closes the first water inlet 11, the first elastic member 62 is in a free state, and when the valve plate 61 opens the first water inlet 11, the first elastic member 62 is in a compressed state.
A second valve 7 disposed between the hot water pipe 2 and the bypass pipe 4 for communicating the hot water pipe and the bypass pipe or cutting off the communication between the hot water pipe and the bypass pipe 4; the second valve 7 in this embodiment comprises a piston 71 housed inside the hot water pipe 2 and radially movable on the port of said bypass pipe 4, and a second elastic element 72 for resetting the piston 71.
One end of the second elastic member 72 is connected to the piston 71, and the other end abuts against the temperature sensing driving device 8.
The second elastic member 72 in this embodiment is a spring, which is sleeved on the copper tube, and one end of the second elastic member is connected to the piston 71, and the other end of the second elastic member abuts against the push plate 85 of the temperature sensing driving device.
The piston 71 in this embodiment is a copper piston to facilitate heat transfer.
A temperature sensing driving device 8 connected between the first valve 6 and the second valve 7, and operated according to a change in water temperature, for opening the first valve 6 and closing the second valve 7 when the water temperature in the hot water pipe 2 reaches a set temperature; when the temperature of water in the hot water pipe 2 is lower than a set temperature, the first valve 6 is closed, and the second valve 7 is opened. The method comprises the following steps:
the housing 81 is made of a heat conducting material, and is a hollow copper tube with a closed end and an open end in the embodiment; the upper end part, namely the closed end part, of the heat conducting shell 81 is in driving connection with the piston 71 and is exposed out of the piston 71 so as to sense the temperature of the water in the hot water pipe 2; the lower end of the housing, i.e., the open end, is connected to a push plate 85.
A second capsule 86 disposed below the housing 81 and accommodated in the limiting groove 84, the limiting groove 84 being disposed on the inner wall of the hot water pipe; the push plate 85 is connected to the outer surface of the second capsule 86 and the push plate and the second capsule 86 are provided with through holes 89 communicating the inner cavity of the housing and the inner cavity of the second capsule. So that the first capsule in the copper tube can be received in the second capsule 86 through the through hole 89.
And the ejector rod 87 is arranged on the base 88, the base 88 and the ejector rod 87 are both accommodated in the second capsule body 86, and the upper end of the ejector rod 87 is open towards the lower end of the copper pipe.
The working principle of the zero-cold water mixing device is described as follows:
when the water heater is not started, cold water is reserved in the pipeline. Because the water temperature is low, the paraffin in the copper pipe shrinks at low temperature, and the piston is accommodated in the hot water pipe under the action of the self gravity and the second elastic piece and does not extend out; the hot water pipe is communicated with the bypass pipe; at the moment, the pressure of water flow in the hot water pipe cannot overcome the elasticity of the first elastic piece, one end of the valve plate is abutted against the wall of the hot water pipe under the action of the first elastic piece, the first valve is closed, and cold water in the hot water pipe cannot enter the water outlet pipe.
The water heater is started initially, cold water reserved in the hot water pipe starts to flow, at the moment, due to the fact that the water temperature is low, paraffin in the first bag body is still in a contraction state, and the cold water in the hot water pipe returns to the cold water pipe from the bypass pipe through the one-way valve to circulate.
The water heater works, water flow flowing through the heat exchange tube set of the water heater is heated, the heated water flow enters the hot water tube, the piston and the copper tube feel that the water temperature is heated, the volume of paraffin in the first bag body gradually expands, and the copper tube moves upwards under the action of the ejector rod due to the fact that the ejector rod is not moved, the piston is driven to move upwards, and the other end of the first elastic piece is pulled to move upwards.
The water temperature in the hot water pipe is gradually increased, and the first bag body is expanded along with the water temperature; when the temperature in the hot-water line reaches the setting value, the paraffin expansion in the first capsule reaches the limit, and the import of bypass pipe is stopped up under the drive of copper pipe to the piston this moment, and the other end of first elastic component is pulled up by the push pedal, drives the valve plate and rotates, opens first water inlet, and the hot-water in the hot-water line gets into the outlet pipe from first water inlet, via the hot-water that the delivery port discharge meets the requirements. The zero cold water function is realized.
When the water heater stops working, the temperature of hot water in the hot water pipe is reduced along with the time extension, the volume of paraffin in the first bag body is contracted, the push plate moves downwards, the piston moves downwards under the action of the gravity of the piston and the second elastic piece, and the inlet of the bypass pipe is opened; meanwhile, the first elastic piece resets, drives the valve plate to reset, and closes the first water inlet.
Claims (9)
1. A zero-cold water mixing device comprises a water outlet pipe (1), wherein the water outlet pipe is provided with a first water inlet (11), a second water inlet (12) and a water outlet (13) which are arranged at intervals; the first water inlet (11) is connected with the hot water pipe 2, and the second water inlet (12) is connected with the cold water pipe (3);
it is characterized by also comprising:
the bypass pipe (4) is connected between the cold water pipe (3) and the water inlet pipe (2), and a one-way valve (5) for limiting water flow flowing from the hot water pipe (2) to the cold water pipe (3) is arranged in the bypass pipe (4);
a first valve (6) arranged on the first water inlet (11) for opening or closing the first water inlet (11);
a second valve (7) arranged between the hot water pipe (2) and the bypass pipe (4) and used for switching on and off the bypass pipe (4);
the temperature sensing driving device (8) is connected between the first valve (6) and the second valve (7) and acts along with the change of the water temperature, and when the water temperature in the hot water pipe (2) reaches a set temperature, the first valve (6) is opened and the second valve (7) is closed; when the temperature of water in the hot water pipe (2) is lower than a set temperature, the first valve (6) is closed, and the second valve (7) is opened.
2. A zero cold water mixing device according to claim 1, characterized in that the first valve (6) comprises a valve plate (61) which stops against the first water inlet (11), and a first elastic element (62);
one end of the valve plate (61) can be limited on the inner wall of the hot water pipe (2) in a rotating way, and the other end of the valve plate is connected with the first elastic piece (61);
the first elastic piece (61) is connected with the temperature sensing driving device (8).
3. A zero-cold water mixing device according to claim 2, characterized in that the part of the inner wall of the hot water pipe corresponding to the other end of the valve plate (61) is of an arc-shaped structure.
4. A zero cold water mixing device according to claim 2, characterized in that the second valve (7) comprises a piston (71) radially movable in the bypass pipe (4) or on a bypass pipe port, and a second elastic element (72);
the second elastic piece (72) is abutted between the piston (71) and the temperature sensing driving device (8);
the temperature sensing driving device (8) is connected with the piston (71) in a driving way.
5. A zero-cold-water mixing device according to claim 4, wherein the temperature-sensing driving device (8) comprises a heat-conducting shell (81), a first bag body (82) is arranged in the shell (81), and paraffin (83) is filled in the first bag body (82); one end of the shell (81) is in driving connection with the piston (71), the other end of the shell is connected with a second bag body (85), the second bag body is accommodated in a limiting groove (84), and the limiting groove (84) is arranged on the inner wall of the hot water pipe (2);
the lower port of the shell (81) is open; correspondingly, a through hole (89) is arranged on the second bag body (85) so that the first bag body (82) can be accommodated in the second bag body (85) through the through hole;
a push rod (87) is arranged in the second capsule body (85), and the push rod (87) is abutted against the first capsule body (82) and can penetrate through the through hole (89).
6. A zero-cold-water mixing device according to claim 5, wherein the outer wall of the second capsule (85) is connected with a push plate (85); the push plate (85) is provided with a through hole corresponding to the through hole (89);
the lower port of the shell (81) is connected to the push plate (85);
the other end of the first elastic piece (62) is connected to the push plate (85).
7. A zero-cold-water mixing device according to claim 6, wherein the stem (87) is connected to a base (88), the base (88) being housed within the second capsule (85).
8. A zero cold water mixing device according to claim 7, characterised in that the housing (81) is a copper tube.
9. A zero cold water mixing device according to claim 9, characterised in that the piston (71) is a copper piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810982974.2A CN110864141A (en) | 2018-08-27 | 2018-08-27 | Zero-cold-water mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810982974.2A CN110864141A (en) | 2018-08-27 | 2018-08-27 | Zero-cold-water mixing device |
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| Publication Number | Publication Date |
|---|---|
| CN110864141A true CN110864141A (en) | 2020-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810982974.2A Pending CN110864141A (en) | 2018-08-27 | 2018-08-27 | Zero-cold-water mixing device |
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| CN (1) | CN110864141A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460805A (en) * | 2020-11-25 | 2021-03-09 | 宁波方太厨具有限公司 | Zero cold water system and gas water heater |
-
2018
- 2018-08-27 CN CN201810982974.2A patent/CN110864141A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460805A (en) * | 2020-11-25 | 2021-03-09 | 宁波方太厨具有限公司 | Zero cold water system and gas water heater |
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