CN110319576A - Zero-cold-water gas water heater - Google Patents

Abstract

The present invention discloses a zero cold water gas water heater, comprising a water heater body, a hot water pipeline, a cold water pipeline and a return water branch, wherein the two ends of the return water branch are respectively connected to the hot water pipeline and the cold water pipeline, and further comprising an anti-mixing water device, wherein the anti-mixing water device is respectively connected to the cold water pipeline and the return water branch; the anti-mixing water device can automatically disconnect or automatically connect the return water branch when the water pressure of the cold water in the anti-mixing water device decreases or increases. The present invention is provided with an anti-mixing water device that can automatically connect or disconnect the return water branch according to the change of the water pressure of the cold water, without power loss, and effectively solves the pain point of "mixed water" caused by hot water entering the cold water pipeline when the user uses cold water, thereby avoiding the waste of gas caused by the gas water heater being mistakenly turned on due to "mixed water".

Description

A zero cold water gas water heater

technical field

The invention relates to the technical field of water heaters, in particular to a zero-cold water gas water heater capable of solving the problem of mixed water.

Background technique

With the improvement of consumers' requirements for quality of life, "zero cold water" gas water heaters are becoming more and more common. When installing "zero cold water" gas water heaters, there are two actual situations: with and without return pipes.

For the situation of no return pipe, a one-way valve will be installed between the hot water pipe and the cold water pipe at the farthest water point to press the cold water in the hot water pipe to the cold water pipe. When the remote water point turns on cold water separately, the one-way valve may be opened by mistake due to the large pressure difference, and the water in the hot water pipe will flow into the cold water pipe to cause "mixed water".

Contents of the invention

The present invention aims at at least to a certain extent to solve one of the problems existing in the related art. For this reason, the present invention proposes a zero-cold water gas water heater, which has a simple structure and no power loss, and solves the problem that the user can use water at the farthest water end. The pain point of "mixed water" when using cold water avoids the phenomenon of gas waste caused by the zero cold water gas water heater being turned on by mistake due to "mixed water".

The above-mentioned purpose is achieved through the following technical solutions:

A zero-cold water gas water heater, comprising a water heater body, a hot water pipeline, a cold water pipeline and a return water branch, and the two ends of the return water branch are respectively connected with the hot water pipeline and the cold water pipeline , which also includes an anti-mixing water device, the anti-mixing water device is connected with the cold water pipeline and the return water branch respectively; The backwater branch is automatically disconnected when the temperature becomes smaller, or the backwater branch is automatically connected when the cold water pressure in the anti-mixing water device increases.

In some embodiments, the anti-mixing device includes a valve body with a cavity, and a valve core that is movably arranged in the valve body and separates the cavity into a first cavity and a second cavity. The upper end of the valve body is provided with a first water inlet communicated with the water inlet end of the return water branch, and the lower end is provided with a first water outlet communicated with the water outlet end of the return water branch. The position of the first water outlet is opposite to the position of the first water inlet; the valve core is provided with a through hole for water to flow through, the first cavity is connected with the cold water pipeline, and the valve core It can move horizontally according to the change of the cold water pressure of the first cavity, so that the through hole is connected or disconnected with the first water inlet and the first water outlet.

In some embodiments, the valve core has a columnar structure.

In some embodiments, the anti-mixed water device further includes an elastic member disposed in the second cavity, and the two ends of the elastic member are respectively connected to the valve core and the inner side wall of the second cavity. connected.

In some embodiments, one end of the elastic member is connected to the middle of the valve core, and the other end is connected to the middle of the inner side wall of the second cavity facing the valve core.

In some embodiments, the anti-mixed water device further includes at least one stopper, and the stopper is disposed in the second cavity for limiting the displacement of the valve core toward the horizontal movement of the elastic member. .

In some embodiments, when the valve core abuts against the limiting portion, the communication area of the through hole, the first water inlet and the first water outlet is the largest.

In some embodiments, the number of the limiting parts is two, and the two limiting parts are correspondingly arranged on the inner side of the top and the inner side of the bottom of the second cavity.

In some embodiments, the valve body is provided with a second water inlet and a second water outlet, and the second water inlet communicates with the water inlet section of the cold water pipeline and the first cavity respectively, so that The second water outlet is respectively communicated with the water outlet section of the cold water pipeline and the first cavity.

In some embodiments, the second water inlet and the second water outlet are respectively arranged at the upper and lower ends of the valve body.

Compared with the prior art, the present invention at least includes the following beneficial effects: the present invention effectively solves the problem of no power loss by setting an anti-mixing water device that can automatically connect or automatically disconnect the return water branch according to the change of the water pressure of the cold water. When the user uses cold water, the hot water enters the cold water pipeline and causes the "mixed water" pain point, thereby avoiding the phenomenon of gas waste caused by the gas water heater being turned on by mistake due to "mixed water".

Description of drawings

Fig. 1 is the structural representation of zero cold water gas water heater in the embodiment of the present invention;

Fig. 2 is a partial structural schematic diagram of a zero-cold water gas water heater in an embodiment of the present invention;

Fig. 3 is a schematic structural view of the anti-mixing water device in the embodiment of the present invention. In the figure, the through hole 21 is in a coordinated communication state with the first water inlet 511 and the first water outlet 512 when the user does not use cold water;

Fig. 4 is a structural schematic diagram of the anti-mixing water device in the embodiment of the present invention, in which the through hole 21 is disconnected from the first water inlet 511 and the first water outlet 512 when the user is using cold water.

Detailed ways

The following examples illustrate the invention, but the invention is not limited by these examples. Modifications to the specific implementation of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed in the present invention.

As shown in Figures 1-3, a zero-cold water gas water heater in this embodiment includes a water heater body 1, a hot water pipeline 2, a cold water pipeline 3, a return water branch 4, a hot water pipeline 2 and a cold water pipeline 3 are respectively connected with the water heater body 1, and the return water branch 4 is respectively connected with the hot water pipeline 2 and the cold water pipeline 3, which also includes an anti-mixed water device 5, which is respectively connected with the cold water pipeline 3 and the cold water pipeline 3. The backwater branch 4 is connected; the anti-mixing water device 5 can automatically disconnect the backwater branch 4 when the water pressure of the cold water in the anti-mixing water device 5 becomes smaller, or automatically when the water pressure of the cold water in the anti-mixing water device 5 increases. Connected to the backwater branch 4. In this embodiment, the master bedroom bathroom is used as the farthest water point, and the return water branch 4 and the anti-mixed water device 5 are close to the farthest water point. When the user uses cold water at the farthest end, the anti-mixed water device 5 Pressure relief makes the cold water pressure in the anti-mixed water device 5 smaller, and then the anti-mixed water device 5 can automatically disconnect the return water branch 4; The increase of cold water pressure makes the anti-mixing water device 5 automatically connected to the return water branch 4, so that the water heater can preheat the circulating water.

In the zero cold water gas water heater of this embodiment, its anti-mixing water device 5 can automatically connect or automatically disconnect the return water branch 4 according to the change of the water pressure of the cold water, without power loss, and effectively solves the problem of hot water entering the cold water pipe when the user uses cold water The pain point of "mixed water" occurs in road 3, thereby avoiding the waste of gas caused by the zero-cold water gas water heater being turned on by mistake due to "mixed water".

As shown in Figures 2-3, further, the anti-mixed water device 5 includes a valve body 51 with a cavity and a valve core 52, and an upper end of the valve body 51 is provided to communicate with the water inlet end 41 of the return water branch 4. The first water inlet 511, the lower end is provided with the first water outlet 512 connected with the water outlet 42 of the return water branch 4, the position of the first water outlet 512 is set opposite to the position of the first water inlet 511; the valve core 52 There is a through hole 521 through which water flows, and the valve core 52 is movably arranged in the valve body 51 and divides the cavity into a first cavity 5101 and a second cavity 5102, wherein the first cavity 5101 is connected to the cold water pipeline 3 connected. The spool 52 can move horizontally with the change of the cold water pressure in the first cavity 5101 , so that the through hole 521 is in a coordinated connection with or disconnected from the first water inlet 511 and the first water outlet 512 . Thus, when the user uses cold water at the farthest end, the water pressure of the cold water in the first cavity 5101 decreases, so that the valve core 52 automatically moves toward the first cavity 5101 and the second cavity 5102 under the pressure difference between the first cavity 5101 and the second cavity 5102. A cavity 5101 moves horizontally, and then the through hole 521 is disconnected from the first water inlet 511 and the first water outlet 512, which realizes cutting off the return water branch 4 and prevents hot water from entering through the return water branch 4 The end 41 enters the first cavity 5101 and "water mixing" occurs.

Preferably, the spool 52 has a columnar structure, and the through hole 521 is arranged in the spool 52 and runs through the bottom and the top of the spool 52, so that when the spool 52 moves horizontally toward the first cavity 5101, the top of the spool 52 The surface and the bottom surface can block the first water inlet 511 and the first water outlet 512 correspondingly, so as to prevent hot water from entering the first cavity 5101 through the water inlet 41 and the first water inlet 511 to cause "mixed water".

Specifically, a second water inlet 513 and a second water outlet 514 are provided at the upper and lower ends of the valve body 51, and the second water inlet 513 communicates with the water inlet section 31 of the cold water pipeline 3 and the first cavity 5101 respectively. , the second water outlet 514 communicates with the water outlet section 32 of the cold water pipeline 3 and the first cavity 5101 respectively, so through the second water inlet 513 and the second water outlet 514, the valve body 51 is connected in series to the cold water pipeline 3, so that the pressure in the first cavity 5101 changes in real time according to the change of the cold water pressure of the cold water pipeline 3 .

Further, the anti-mixed water device 5 further includes an elastic member 53 disposed in the second cavity 5102 , and the two ends of the elastic member 53 are respectively connected with the valve core 52 and the inner side wall of the second cavity 5102 . Therefore, by setting the elastic member 53 in the second cavity 5102, when the cold water pressure in the first cavity 5101 begins to decrease due to the use of cold water by the user, the valve core 52 can act on the pretightening force of the elastic member 53. Move quickly towards the first cavity 5101 to cut off the passage between the through hole 521 and the first water inlet 511 and the first water outlet 512 in time, which is conducive to improving the accuracy and reliability of the on-off control of the return water branch 4 , to enhance the effect of anti-mixed water.

Preferably, the elastic member 53 is a spring, one end of the spring is connected to the middle of the valve core 52, and the other end is connected to the middle of the inner side wall of the second cavity 5102 facing the valve core 52, so as to ensure that the two ends of the valve core 52 are balanced in force and prevent The spool 52 has an abnormal phenomenon of inclination during the horizontal movement.

Further, the anti-mixed water device 5 further includes at least one limiting portion 54 , which is disposed in the second cavity 5102 to limit the displacement of the valve core 52 toward the elastic member 53 when moving horizontally. When the spool 52 abuts against the limiting portion 54, the communication area between the through hole 521 and the first water inlet 511 and the first water outlet 512 is the largest, so that under the action of the limiting portion 54, even the first cavity 5101 The water pressure in the cavity increases sharply, and the through hole 521 is always in the state of the largest communication area with the first water inlet 511 and the first water outlet 512, which avoids the return water branch caused by the excessive water pressure of the first cavity 5101. 4, the water flow becomes smaller or even disconnected, thereby affecting the preheating effect of the water heater.

Preferably, there are two limiting parts 54, and the two limiting parts 54 are respectively arranged on the top inner side and the bottom inner side of the second cavity 5102, so as to ensure that the upper and lower ends of the valve core 52 are balanced in force, and further prevent The spool 52 tilts during the movement.

The working principle of the anti-mixing water device 5 of the present embodiment will be described below in conjunction with Fig. 3-4:

As shown in FIG. 3 , when cold water is not used at the farthest end or the cold water valve at the farthest end is closed, the water pressure in the first cavity 5101 increases. When the pressure in the first cavity 5101 is greater than the preload of the elastic member 53 When the sum of the force and the pressure of the second cavity 5102, the spool 52 automatically moves horizontally toward the second cavity 5102. When the valve core 52 moves to the limit portion 54 and contacts, the through hole 521 and the first water inlet 511 and the first water outlet 512 are in a communication state with the largest communication area, so that the return water branch 4 is connected, which is beneficial to the water heater. Preheat the circulating water.

As shown in Figure 4, when the user uses cold water at the farthest end, the pressure in the first cavity 5101 begins to decrease, and under the joint action of the pressure in the second cavity 5102 and the pretightening force of the elastic member 53, the valve core 52 automatically Move horizontally toward the first cavity 5101, that is, the direction of the elastic member 53, so that the through hole 521 is disconnected from the first water inlet 511 and the first water outlet 512, thereby cutting off the return water branch 4 and preventing hot water from entering The "mixed water" phenomenon occurs in the first cavity 5101, which avoids the false opening of the water heater due to "mixed water", and is beneficial to reduce unnecessary consumption of gas.

What have been described above are only some embodiments of the present invention. For those skilled in the art, without departing from the inventive concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention.

Claims (10)

1. a kind of zero cold water gas heater, including water heater body (1), hot water line (2), cold water pipeline (3) and return water branch The both ends on road (4), the return water branch (4) are connected with the hot water line (2) and the cold water pipeline (3) respectively, special Sign is, further includes mixed-proof device (5), the mixed-proof device (5) respectively with the cold water pipeline (3) and the return water branch Road (4) is connected；

The mixed-proof device (5) can disconnect automatically the return water when mixed-proof device (5) the inner cold water hydraulic pressure becomes smaller Branch (4), or the return water branch (4) described in automatic switching on when mixed-proof device (5) the inner cold water hydraulic pressure increases.

2. a kind of zero cold water gas heater according to claim 1, which is characterized in that mixed-proof device (5) packet It includes the valve body (51) with cavity and is movably arranged in the valve body (51) and the cavity is separated into the first cavity (5101) and the spool (52) of the second cavity (5102) it, is equipped with and the return water branch (4) in the upper end of the valve body (51) The first water inlet (511) that water inlet end (41) is connected, lower end is equipped with to be connected with the water outlet (42) of the return water branch (4) The first water outlet (512), the position of first water outlet (512) is opposite with the position of first water inlet (511) to be set It sets；

The spool (52) is equipped with the through-hole (521) that water supply stream passes through, first cavity (5101) and the cold water pipeline (3) Be connected, the spool (52) can the horizontal movement with the cold water variation in water pressure of first cavity (5101), and then make institute It states through-hole (521) and first water inlet (511) and first water outlet (512) is in and is connected to or off-state.

3. a kind of zero cold water gas heater according to claim 2, which is characterized in that the spool (52) is in the form of a column knot Structure.

4. a kind of zero cold water gas heater according to claim 2 or 3, which is characterized in that the mixed-proof device (5) Further include that elastic component (53) in second cavity (5102) is set, the both ends of the elastic component (53) respectively with the valve Core (52), second cavity (5102) inner sidewall be connected.

5. a kind of zero cold water gas heater according to claim 4, which is characterized in that one end of the elastic component (53) It is connect with the middle part of the spool (52), in the other end and the inner sidewall of the second cavity (5102) towards the spool (52) Portion's connection.

6. a kind of zero cold water gas heater according to claim 5, which is characterized in that the mixed-proof device (5) is also Including at least one limiting section (54), limiting section (54) setting is in second cavity (5102) for limiting the valve Displacement of the core (52) towards the elastic component (53) horizontal movement.

7. a kind of zero cold water gas heater according to claim 6, which is characterized in that the spool (52) with it is described When limiting section (54) abuts against, the through-hole (521) and first water inlet (511) and first water outlet (512) Cooperation connection area is maximum.

8. a kind of zero cold water gas heater according to claim 7, which is characterized in that the quantity of the limiting section (54) It is two, two limiting sections (54), which respectively correspond, to be arranged in the inside top and bottom of second cavity (5102) Side.

9. a kind of zero cold water gas heater according to claim 2, which is characterized in that the valve body (51) is equipped with second Water inlet (513) and the second water outlet (514), second water inlet (513) inlet segment with the cold water pipeline (3) respectively (31), first cavity (5101) is connected, second water outlet (514) water outlet with the cold water pipeline (3) respectively Section (32), first cavity (5101) are connected.

10. a kind of zero cold water gas heater according to claim 9, which is characterized in that second water inlet (513) The upper and lower ends of the valve body (51) are separately positioned on second water outlet (514).