Anti-freezing drainage and cold and hot water mixing pipeline structure of household water heater

Abstract

An anti-freezing drainage and cold and hot water mixing pipeline structure of a domestic water heater comprises a cold water inlet pipe, a cold water outlet pipe, a hot water inlet pipe, a hot water outlet pipe and a drainage and water mixing valve assembly in butt joint with the pipeline. The drainage water mixing valve assembly comprises a double-channel bypass pipe, an electric adjusting four-way valve, a driving motor and an anti-freezing drainage pipe. And a first bypass channel and a second bypass channel are arranged in the double-channel bypass pipe. Four valves are arranged in the electric adjusting four-way valve; the first valve is butted with the cold water inlet pipe; the second valve is butted with the cold water outlet pipe; the third valve is in butt joint with the first end of the first bypass channel. The fourth valve is in butt joint with the first end of the second bypass channel. The hot water inlet pipe, the hot water outlet pipe and the second end of the first bypass channel are butted through a three-way joint; the second end of the second bypass channel is in butt joint with the first end of the anti-freezing drainage pipe, and the second end of the anti-freezing drainage pipe is suspended. According to the pipeline structure, the four valves of the electric adjusting four-way valve are driven by the driving motor, and the effects of anti-freezing drainage and cold and hot water mixing are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to domestic hot water equipment technical field especially, relates to a domestic water heater anti -icing drainage and cold -hot mixed water's pipeline structure. BACKGROUND

[0002] Please refer to the attached drawings of the description Figure 1 , Figure 1 It is the structure diagram of traditional domestic gas water heater, and the main structure of traditional domestic gas water heater includes: machine inside elbow pipe 100, heat exchanger assembly 200 and temperature control assembly 300;Machine inside elbow pipe 100 two ends are respectively cold water inlet and hot water outlet, and machine inside elbow pipe 100 is bent and arranged from the bottom of the machine box to the top of the machine box, and machine inside elbow pipe 100 is surrounded into heat exchange bending pipe 101 at the position above heat exchanger assembly 200, and cold water inlet and hot water outlet are located at the bottom of the machine box.Domestic gas water heater installs, and cold water inlet is connected to the water pipe through water inlet valve 400, and hot water outlet is connected to the bathroom or wash basin with user using hot water, wherein the water inlet valve and the water outlet valve are usually open state.User uses, and after opening the shower head or faucet, heat exchanger assembly 200 ignites and heats heat exchange bending pipe 101 of machine inside elbow pipe 100, and the hot water after heating flows out from hot water outlet for user to use.

[0003] Because the water inlet valve 400 and the water outlet valve 500 of the traditional domestic gas water heater are usually open state, the water in the machine inside elbow pipe 100 usually stays, and in the particularly cold north, the water in the machine inside elbow pipe 100 often freezes and causes the machine inside elbow pipe 100 to burst, and the heat exchange bending pipe 101 above the heat exchanger assembly 200 is most likely to cause ice burst due to multiple back bending.

[0004] At the same time, the traditional domestic gas water heater adjusts the water temperature by a constant bypass pipe to mix cold water into the hot water pipe to achieve temperature adjustment effect, but the constant bypass pipe flow is fixed and cannot be adjusted, which causes poor water temperature adjustment effect of the water heater and poor user experience. INVENTION CONTENTS

[0005] In view of the defects of the prior art, the utility model provides a kind of pipeline structure of domestic water heater anti -icing drainage and cold -hot mixed water to overcome the defects in the prior art.

[0006] To achieve the above object, the utility model is realized by the following technical scheme:

[0007] A kind of pipeline structure of domestic water heater anti -icing drainage and cold -hot mixed water, including cold water inlet pipe, cold water outlet pipe, hot water inlet pipe, hot water outlet pipe and the drainage mixed water valve assembly of butt joint on cold water inlet pipe, cold water outlet pipe, hot water inlet pipe and hot water outlet pipe,

[0008] The drain water mixing valve assembly comprises a double-channel bypass pipe, an electrically-controlled regulating four-way valve, a driving motor and an anti-freezing drain pipe.

[0009] The double-channel bypass pipe is internally provided with a first bypass channel and a second bypass channel.

[0010] The electrically-controlled regulating four-way valve is internally provided with a first valve, a second valve, a third valve and a fourth valve; the first valve is connected to a cold water inlet pipe; the second valve is connected to a cold water outlet pipe; the third valve is connected to a first end of the first bypass channel; and the fourth valve is connected to a first end of the second bypass channel.

[0011] Further, the hot water inlet pipe, the hot water outlet pipe and a second end of the first bypass channel are connected through a tee joint; a second end of the second bypass channel is connected to a first end of the anti-freezing drain pipe, and a second end of the anti-freezing drain pipe is suspended.

[0012] Further, the driving motor is electrically connected to a temperature control assembly of the water heater and drives to adjust the opening and closing postures of the valves in the electrically-controlled regulating four-way valve.

[0013] Further, one end of the cold water inlet pipe, which is not connected to the electrically-controlled regulating four-way valve, is connected to a tap water pipe through a cold water valve.

[0014] Further, one end of the hot water outlet pipe, which is not connected to the second bypass channel, is connected to a terminal shower head or faucet through a hot water valve.

[0015] Further, the cold water outlet pipe and the hot water inlet pipe are integrally connected to form an in-machine elbow pipe.

[0016] Further, the in-machine elbow pipe is bent back and forth above the heat exchanger assembly to form a heat exchange bent pipe.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] The pipe structure of the household water heater anti-freezing drain and cold-hot water mixing of the present application is provided with a drain water mixing valve assembly on the pipe; four valves in the electrically-controlled regulating four-way valve are driven by the driving motor of the drain water mixing valve assembly; the anti-freezing drain and cold-hot water mixing effects are achieved through the closed state combination of the four valves; and the opening degree of the electrically-controlled regulating four-way valve in the present application is adjustable, so that the cold water mixing flow is controllable, the temperature adjusting function of the water heater is more flexible, and the user experience is better.

[0019] In order to more clearly understand the present application, the preferred embodiments of the present application will be described below in conjunction with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1A structure schematic view of a conventional household gas water heater in the background art;

[0021] Figure 2 A use state reference drawing of the utility model;

[0022] Figure 3 A structure schematic view of the utility model;

[0023] Figure 4 A structure schematic view of the drainage mixed water valve assembly of the utility model.

[0024] The drawing label:

[0025] 1-cold water inlet pipe, 2-cold water outlet pipe, 3-hot water inlet pipe, 4-hot water outlet pipe, 5-drainage mixed water valve assembly; 51-side connecting pipe, 52-electrically adjusted four-way valve, 53-driving motor, 54-anti-freezing drainage pipe; 100-in-machine elbow, 101-heat exchange winding pipe, 200-heat exchanger assembly, 300-temperature control assembly, 400-water inlet valve, 500-water outlet valve. Specific implementation

[0026] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0027] In addition, if the terms "first", "second", etc. are used only for the purpose of description, they are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components, and cannot be understood as indicating or implying the relative importance.

[0028] In addition, it should be noted that, unless otherwise specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, can be internal communication of two elements; for ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0029] Please refer to Figures 1-4 The utility model provides a domestic water heater anti -freezing drainage and cold -hot mixed water's pipeline structure, including cold water inlet pipe 1, cold water outlet pipe 2, hot water inlet pipe 3, hot water outlet pipe 4 and the drainage mixed water valve assembly 5 that butt joint in cold water inlet pipe 1, cold water outlet pipe 2, hot water inlet pipe 3 and hot water outlet pipe 4.

[0030] The drainage mixed water valve assembly 5 includes a double-channel bypass pipe 51, an electrically adjusted four-way valve 52, a drive motor 53 and an anti-freezing drainage pipe 54.

[0031] The double-channel bypass pipe 51 has a first bypass channel and a second bypass channel.

[0032] The electrically adjusted four-way valve 52 has a first valve, a second valve, a third valve and a fourth valve; the first valve is connected to the cold water inlet pipe 1; the second valve is connected to the cold water outlet pipe 2; the third valve is connected to the first end of the first bypass channel; the fourth valve is connected to the first end of the second bypass channel; the drive motor 53 is electrically connected to the temperature control assembly 300 of the water heater and drives the opening and closing posture of each valve in the electrically adjusted four-way valve 52.

[0033] Further, the hot water inlet pipe 3, the hot water outlet pipe 4 and the second end of the first bypass channel are connected through a three-way joint; the second end of the second bypass channel is connected to the first end of the anti-freezing drainage pipe 54, and the second end of the anti-freezing drainage pipe 54 is suspended, which is convenient for discharging water in the pipeline when starting the anti-freezing function.

[0034] The cold water inlet pipe 1 is connected to the water pipe through a cold water valve 400 at one end not connected to the electrically adjusted four-way valve 52, providing cold water into the water heater.

[0035] The hot water outlet pipe 4 is connected to the terminal shower head or faucet through a hot water valve 500 at one end not connected to the second bypass channel, providing cold and hot water for users.

[0036] As a preferred embodiment, the cold water outlet pipe 2 and the hot water inlet pipe 3 are integrally connected to form an in-machine elbow pipe 100, and the heat exchange elbow pipe 101 is formed by bending back and forth above the heat exchanger assembly 200.

[0037] Working principle:

[0038] 1. Daily use mode, cold water valve 400 and hot water valve 500 are always open, the flow direction of water is: cold water valve 400, cold water inlet pipe 1, first valve of electric regulating four-way valve 52, second valve of electric regulating four-way valve 52, cold water outlet pipe 2, in-machine elbow pipe 100, hot water inlet pipe 3, hot water outlet pipe 4, hot water valve 500 and terminal shower head or faucet, the water heater provides hot water to the terminal, in this mode, the first valve and the second valve of the electric regulating four-way valve 52 are open, and the third valve and the fourth valve are closed.

[0039] 2. Mixed water temperature adjustment mode, which is based on the daily use mode, the third valve of the electric regulating four-way valve 52 is adjusted by the water heater temperature control assembly 300 according to the received water temperature sensor signal, the cold water is mixed with the hot water in the hot water outlet pipe 4 through the first bypass channel of the bypass pipe 51, and the water temperature adjustment effect is achieved, in this mode, the first valve, the second valve and the third valve of the electric regulating four-way valve 52 are open, and the fourth valve is closed.

[0040] 3. Anti-freezing drainage mode, in this mode, the terminal user does not use the water heater, the cold water valve 400 is closed, when the air temperature is extremely low, the fourth valve of the electric regulating four-way valve 52 is opened by the water heater temperature control assembly 300 according to the received water temperature sensor signal, so that the heat exchange winding pipe 101, the cold water outlet pipe 2, the hot water inlet pipe 3, the first bypass channel, the second bypass channel and the anti-freezing drainage pipe 54 are all in communication state, the water in the high position of the pipe is automatically drained through the anti-freezing drainage pipe 54, so that the heat exchange winding pipe 101 in the high position is free of water, and the related pipeline is prevented from being frozen and burst; in this mode, the first valve, the second valve, the third valve and the fourth valve of the electric regulating four-way valve 52 are all open.

[0041] Compared with the prior art, the pipe structure of the household water heater anti-freezing drainage and cold-hot mixed water of the application has a drainage and mixed water valve assembly on the pipe, the four valves built in the electric regulating four-way valve are driven by the driving motor of the drainage and mixed water valve assembly, and the anti-freezing drainage and cold-hot mixed water effect is achieved through the closed state combination of the four valves.

[0042] The above-described embodiments only express several embodiments of the application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the application patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the application, a number of modifications and improvements can be made, which all belong to the protection scope of the application.

Claims

1. A piping structure for antifreeze drainage and hot / cold water mixing in a household water heater, characterized in that: Includes a cold water inlet pipe (1), a cold water outlet pipe (2), a hot water inlet pipe (3), a hot water outlet pipe (4), and a drain mixing valve assembly (5) connected to the cold water inlet pipe (1), the cold water outlet pipe (2), the hot water inlet pipe (3), and the hot water outlet pipe (4); The drain mixing valve assembly (5) includes a dual-channel bypass pipe (51), an electrically adjustable four-way valve (52), a drive motor (53), and an antifreeze drain pipe (54). The dual-channel bypass pipe (51) has a built-in first bypass channel and a second bypass channel. The electric regulating four-way valve (52) has a first valve, a second valve, a third valve and a fourth valve built in; the first valve is connected to the cold water inlet pipe (1); the second valve is connected to the cold water outlet pipe (2); the third valve is connected to the first end of the first bypass channel; and the fourth valve is connected to the first end of the second bypass channel.

2. The pipe structure for antifreeze drainage and hot / cold water mixing in a household water heater according to claim 1, characterized in that: The hot water inlet pipe (3), the hot water outlet pipe (4) and the second end of the first bypass channel are connected by a T-joint; the second end of the second bypass channel is connected to the first end of the antifreeze drain pipe (54), and the second end of the antifreeze drain pipe (54) is suspended.

3. The piping structure for antifreeze drainage and hot / cold water mixing in a household water heater according to claim 2, characterized in that: The drive motor (53) is electrically connected to the temperature control component (300) of the water heater and drives the adjustment of the opening and closing posture of each valve in the electric regulating four-way valve (52).

4. The pipe structure for antifreeze drainage and hot / cold water mixing in a household water heater according to claim 3, characterized in that: The end of the cold water inlet pipe (1) that is not connected to the electric regulating four-way valve (52) is connected to the tap water pipe through the cold water valve (400).

5. The piping structure for antifreeze drainage and hot / cold water mixing in a household water heater according to claim 4, characterized in that: The hot water outlet pipe (4) is connected to the terminal shower head or faucet via a hot water valve (500) at one end, which is not connected to the second bypass channel.

6. The piping structure for antifreeze drainage and hot / cold water mixing in a household water heater according to claim 5, characterized in that: The cold water outlet pipe (2) and the hot water inlet pipe (3) are connected in one piece to form an internal bend pipe (100).

7. The piping structure for antifreeze drainage and hot / cold water mixing in a household water heater according to claim 6, characterized in that: The internal bend (100) is bent back and forth above the heat exchanger assembly (200) to form a heat exchange bend (101).

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