Zero cold water heater with double water paths

Abstract

The utility model relates to the technical field of instant water heaters, in particular to a zero cold water heater with double water paths. The heater comprises a heating assembly, the two ends of the heating assembly are communicated with a water inlet base and a water outlet base respectively, the water inlet base is provided with a cold water inlet end and a hot water inlet end, and the water outlet base is provided with a cold water outlet end and a hot water outlet end; a threaded pipe is arranged in the heating assembly, a heating channel is arranged on the outer side of the threaded pipe, and a direct flow channel is arranged in an inner cavity of the threaded pipe. The cold water path comprises a cold water inlet end, a direct flow channel and a cold water outlet end; the hot water path comprises a hot water inlet end, a heating channel and a hot water outlet end; and a water valve is arranged on the water inlet base. A double-inlet and double-outlet water path structure is adopted, an independent cold water output channel is arranged, the cold and hot water constant-temperature adjusting process is accelerated, when the cold water function is switched after hot water is used up, large-flux cold water can be output through a direct flow channel without waiting, use is convenient and fast, and safety is high.

Description

A zero-cold-water heater with dual water paths Technical Field

[0001] This utility model relates to the field of instant water heater technology, and in particular to a zero-cold-water heater with dual water circuits. Background Technology

[0002] In traditional water heaters, there is usually a connecting pipe between the water heater and the showerhead or faucet. When users want to use hot water, they need to first flush out the cold water in the pipe, which takes a few seconds and is inconvenient. Therefore, installing a small instant water heater, such as a mini water heater, in the pipe between the water heater and the faucet has become popular.

[0003] For example, Chinese utility model patent CN205002340U discloses a zero-cold-water instant hot water supply system, including a gas water heater, which includes a heat exchanger, a hot water outlet interface, and a cold water inlet interface; it also includes a thermostatic reversing valve, a small water heater, a water guide pipe, and a hot water outlet pipe; the small water heater is provided with a cold water interface and a hot water interface; the thermostatic reversing valve has a water inlet end, a first water outlet end, and a second water outlet end; one end of the water guide pipe is connected to the hot water outlet interface, and the other end is connected to the water inlet end of the thermostatic reversing valve, the first water outlet end is connected to the cold water interface of the small water heater, the second water outlet end is connected to the hot water outlet pipe, and the hot water interface of the small water heater is connected to the hot water outlet pipe.

[0004] The existing technology has the following problems: there is no separate cold water outlet channel, the waiting time for the hot water to mix and cool down when the hot water temperature is too high, and when the user switches to the cold water function after using hot water, they need to wait for the residual hot water in the pipes to be discharged, which is not convenient and safe. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a zero-cold-water heater with dual water channels that can output cold water independently, is safe and convenient.

[0006] The technical solution adopted by this utility model to solve the problem is: a zero-cold-water heater with dual water channels, comprising a heating component, an inlet base, and an outlet base, wherein the inlet base and the outlet base are respectively installed at both ends of the heating body, characterized in that:

[0007] The heating component has a heating channel inside, and a DC channel is provided on the inner or outer side of the heating component.

[0008] The water inlet base is provided with a cold water inlet and a hot water inlet, and the water outlet base is provided with a cold water outlet and a hot water outlet;

[0009] The DC channel connects the cold water inlet and the cold water outlet, and the heating channel connects the hot water inlet and the hot water outlet.

[0010] As a further improvement to the above technical solution, a valve seat is provided in the middle of the water inlet base, and a water valve is installed in the valve seat. A motor is connected to the water valve, and the motor can drive the water valve to control the water flow rate of the hot water inlet, as well as control the on / off state and the mixed water flow rate between the cold water inlet and the hot water inlet.

[0011] As a further improvement to the above technical solution, the valve seat is provided with a cold water inlet hole communicating with the cold water inlet end and a hot water inlet hole communicating with the hot water outlet end, and the valve seat is also provided with an outlet hole.

[0012] The water valve includes a stationary valve plate, which has a first valve hole and a second valve hole. The first valve hole is used to connect the cold water inlet and the water outlet, and the second valve hole is used to connect the hot water inlet and the water outlet. The water outlet is connected to the heating channel.

[0013] As a further improvement to the above technical solution, the heating assembly includes a heating element and a radiator. The heating element is sleeved inside the radiator, and a secondary tube body is detachably connected to one side of the radiator. A flow guiding cavity is provided inside the secondary tube body.

[0014] The top of the water inlet base is provided with a main mounting groove and a secondary mounting groove, which are arranged adjacent to each other. The heating tube is fixedly connected to the main mounting groove, and the secondary tube body is fixedly connected to the secondary mounting groove. The secondary mounting groove connects the water outlet and the flow guide cavity.

[0015] As a further improvement to the above technical solution, a threaded tube is provided inside the heating tube, the heating channel is located between the outer wall of the threaded tube and the inner wall of the heating tube, and the DC channel is located in the inner cavity of the threaded tube.

[0016] The main mounting slot is equipped with a connecting post, and the threaded pipe is inserted into the connecting post. The connecting post connects the cold water inlet end to the DC channel.

[0017] As a further improvement to the above technical solution, a mixing chamber is also included, which is connected to the bottom of the main mounting groove and the auxiliary mounting groove, and the mixing chamber is connected to the flow guide chamber and the heating channel.

[0018] As a further improvement to the above technical solution, a water flow sensor is provided in the auxiliary mounting groove. The water flow sensor is used to detect the interruption and velocity of water flow in the guide cavity.

[0019] As a further improvement to the above technical solution, a water temperature sensor is provided inside the second water outlet.

[0020] As a further improvement to the above technical solution, it also includes a main control circuit board, wherein the outlet water temperature sensor and the water flow sensor are electrically connected to the main control circuit board, and a thyristor is connected in series between the main control circuit board and the heating element. The main control circuit board is also electrically connected to the motor and the heating element.

[0021] As a further improvement to the above technical solution, the heater is connected to an external water heater, and the hot water inlet is connected to the hot water output of the water heater:

[0022] The advantages of this utility model are: it adopts a dual-inlet and dual-outlet water circuit structure and sets up a separate cold water output channel. When switching to the cold water function after using hot water, there is no need to wait. A large flow of cold water can be output through the DC channel, which is convenient, quick and easy to use and has high safety. Attached Figure Description

[0023] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0024] Figure 1 is a schematic diagram of the structure of this utility model;

[0025] Figure 2 is an exploded view of this utility model;

[0026] Figure 3 is a structural schematic diagram of the water inlet base and water valve of this utility model;

[0027] Figure 4 is an exploded three-dimensional view of Figure 3;

[0028] Figure 5 is a three-dimensional sectional view of Figure 3;

[0029] Figure 6 is a bottom view of this utility model;

[0030] Figure 7 is a cross-sectional view along the AA direction of Figure 6;

[0031] Figure 8 is a cross-sectional view along the BB direction of Figure 6;

[0032] Figure 9 is a schematic diagram of the installation of the heater and water heater of this utility model.

[0033] In the diagram: 1-Inlet base, 11-Cold water inlet, 12-Hot water inlet, 13-Main mounting slot, 131-Connecting column, 14-Secondary mounting slot, 15-Mixing chamber, 16-Valve seat, 161-Cold water inlet, 162-Hot water inlet, 163-Outlet, 2-Heating component, 21-Heating element, 211-Heating channel, 22-Radiator, 23-Threaded pipe, 231-Direct current channel, 3-Outlet base, 31-Cold water outlet, 32-Hot water outlet, 4-Water flow sensor, 5-Outlet temperature sensor, 6-Water valve, 61-Stationary valve plate, 611-First valve hole, 612-Second valve hole, 7-Motor, 8-Secondary pipe body, 81-Guide chamber. Detailed Implementation

[0034] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0035] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0037] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0038] Referring to Figures 1 to 4, a zero-cold-water heater with dual water channels includes a heating component 2, an inlet base 1, and an outlet base 3, wherein the inlet base 1 and the outlet base 3 are respectively installed at both ends of the heating body;

[0039] The heating component 2 is provided with a heating channel 211, and the heating component 2 is provided with a DC channel 231 on its inner or outer side.

[0040] The water inlet base 1 is provided with a cold water inlet end 11 and a hot water inlet end 12, and the water outlet base 3 is provided with a cold water outlet end 31 and a hot water outlet end 32;

[0041] The DC channel 231 connects the cold water inlet 11 and the cold water outlet 31, and the heating channel 211 connects the hot water inlet 12 and the hot water outlet 32.

[0042] Preferably, referring to Figure 9, the heater is connected to an external water heater, and the hot water inlet 12 is connected to the hot water output end of the water heater.

[0043] In a preferred embodiment, the water valve 6 has two functions: 1. controlling the inlet flow rate of the hot water inlet 12; 2. controlling the on / off connection between the cold water inlet 11 and the hot water inlet 12 and the mixed water flow rate.

[0044] Preferably, a valve seat 16 is provided in the middle of the water inlet base 1, and a water valve 6 is installed in the valve seat 16. A motor 7 is connected to the water valve 6. The motor 7 can drive the water valve 6 to control the water flow rate of the hot water inlet 12, as well as control the on / off state and the mixed water flow rate between the cold water inlet 11 and the hot water inlet 12.

[0045] Preferably, referring to Figures 3 to 4, the valve seat 16 is provided with a cold water inlet 161 communicating with the cold water inlet 11 and a hot water inlet 162 communicating with the hot water inlet 12, and the valve seat 16 is also provided with an outlet 163.

[0046] The water valve 6 includes a stationary valve plate 61, on which a first valve hole 611 and a second valve hole 612 are provided. The first valve hole 611 is used to connect the cold water inlet hole 161 and the water outlet hole 163, and the second valve hole 612 is used to connect the hot water inlet hole 162 and the water outlet hole 163. The water outlet hole 163 is connected to the heating channel 211.

[0047] In this embodiment, the cold water path is designated as 'a', and the hot water path as 'b'. Under normal conditions, the motor 7 drives the water valve 6 to operate, blocking the cold water inlet 161, thereby cutting off the connection between the cold water path a and the hot water path b. The water flow in the cold water path a does not need to pass through the water valve 6; it flows in from the inlet base 1 and directly to the first outlet 31 via the direct current channel 231, without being controlled by the water valve 6. Therefore, when the user switches to the cold water function, there is no need to perform the step of draining residual hot water; the cold water path a can directly output a large flow of cold water. Furthermore, even if the water valve 6 malfunctions and closes, the cold water output function of the heater is not affected.

[0048] Preferably, referring to Figures 3, 5, 7 and 8, the heating assembly 2 includes a heating tube 21, and a secondary tube body 8 is detachably connected to one side of the heating tube 21. The secondary tube body 8 is provided with a flow guiding cavity 81.

[0049] The top of the water inlet base 1 is provided with a main mounting groove 13 and a secondary mounting groove 14. The main mounting groove 13 and the secondary mounting groove 14 are arranged adjacent to each other. The heating tube 21 is fixedly connected to the main mounting groove 13, and the secondary tube body 8 is fixedly connected to the secondary mounting groove 14. The secondary mounting groove 14 connects the hot water inlet end 12 and the guide cavity 81.

[0050] The main material of the secondary tube body 8 is a metal or plastic with good thermal conductivity, such as copper or aluminum. The secondary tube body 8 is tightly attached to the heat sink 22.

[0051] After hot water enters the inlet base 1, it pushes the unheated cold water in the guide cavity 81 to the top of the secondary pipe body 8, and then flows from top to bottom to the mixing cavity 15. During this process, the temperature of the radiator 22 is reduced through heat exchange between the secondary pipe body 8 and the radiator 22, thereby reducing the surface temperature rise between the outer shell and the internal components. At the same time, the water flowing through the secondary pipe body 8 is preheated, which improves the heating efficiency.

[0052] Preferably, a threaded tube 23 is provided inside the heating tube 21, a heating channel 211 is provided between the outer wall of the threaded tube 23 and the inner wall of the heating tube 21, and a direct current channel 231 is provided in the inner cavity of the threaded tube 23.

[0053] The main mounting slot 13 is equipped with a connecting post 131. The spiral tube is inserted into the connecting post 131, and the connecting post 131 connects the cold water inlet 11 and the DC channel 231.

[0054] Cold water and hot water flow through the inner and outer sides of the threaded pipe 23, respectively. Cold water circuit a and hot water circuit b are set up independently to avoid the water temperature of the two circuits affecting each other.

[0055] Preferably, it also includes a mixing chamber 15, which is connected to the bottom of the main mounting groove 13 and the auxiliary mounting groove 14, and the mixing chamber 15 is connected to the guide chamber 81 and the heating channel 211.

[0056] Referring to Figures 5 to 8, the flow direction of cold water circuit a is: cold water inlet 11, connecting column 131, direct current channel 231 and cold water outlet 31; the flow direction of hot water circuit b is: hot water inlet 12, water valve 6, auxiliary mounting groove 14, guide cavity 81, mixing cavity 15, main mounting groove 13, heating channel 211 and hot water outlet 32.

[0057] Preferably, referring to Figures 2, 5 and 7, the hot water outlet 32 ​​is provided with an outlet water temperature sensor 6.

[0058] Preferably, a water flow sensor 5 is provided in the auxiliary mounting groove 14. The water flow sensor 5 is used to detect the interruption and flow rate of water in the guide cavity 81.

[0059] Preferably, it also includes a main control circuit board, with the outlet water temperature sensor 6 and the water flow sensor 5 both electrically connected to the main control circuit board. A thyristor is also connected in series between the main control circuit board and the heating element 21. The main control circuit board is electrically connected to the motor 7 and the heating element 21.

[0060] When the faucet is turned on, cold water flows between the pipes of the water heater and the heating device. The water flow sensor 5 detects the water flow signal, and the main control circuit board sends a command to control the heating element 21 to be powered on, heating the cold water remaining in the pipes and the heating device, so that the faucet can output hot water as soon as it is turned on, achieving the zero cold water function; at the same time, based on the detected water flow signal, it can also prevent the heating element 2 from burning dry and perform precise temperature control adjustment when heating water.

[0061] When hot water in the water heater reaches the heating device, the outlet water temperature sensor 6 detects the output water temperature. If the output water temperature is lower than the preset water temperature, the main control circuit board controls the heating element 21 to heat the water through the thyristor to raise the water temperature.

[0062] If the output water temperature is higher than the preset water temperature, the main control circuit board controls the heating element 21 to cut off the power, and at the same time connects the cold water circuit a and the hot water circuit b to form a mixed water circuit, mixing the cold and hot water to achieve the effect of regulation and constant temperature.

[0063] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A zero-cold-water heater with dual water channels, comprising a heating assembly (2), an inlet base (1), and an outlet base (3), wherein the inlet base (1) and the outlet base (3) are respectively installed at both ends of the heating body, characterized in that: The heating component (2) is provided with a heating channel (211), and the heating component (2) is provided with a direct current channel (231) on the inner or outer side; the water inlet base (1) is provided with a cold water inlet end (11) and a hot water inlet end (12), and the water outlet base (3) is provided with a cold water outlet end (31) and a hot water outlet end (32); the direct current channel (231) connects the cold water inlet end (11) and the cold water outlet end (31), and the heating channel (211) connects the hot water inlet end (12) and the hot water outlet end (32).

2. A zero-cold-water heater with dual water channels as described in claim 1, characterized in that: The water inlet base (1) is provided with a valve seat (16) in the middle. A water valve (6) is installed in the valve seat (16). A motor (7) is connected to the water valve (6). The motor (7) can drive the water valve (6) to control the water flow rate of the hot water inlet (12), as well as control the on / off state and the mixed water flow rate between the cold water inlet (11) and the hot water inlet (12).

3. A zero-cold-water heater with dual water channels as described in claim 2, characterized in that: The valve seat (16) is provided with a cold water inlet (161) communicating with the cold water inlet (11) and a hot water inlet (162) communicating with the hot water outlet (32). The valve seat (16) is also provided with an outlet (163). The water valve (6) includes a stationary valve plate (61). The stationary valve plate (61) is provided with a first valve hole (611) and a second valve hole (612). The first valve hole (611) is used to connect the cold water inlet (161) and the outlet (163). The second valve hole (612) is used to connect the hot water inlet (162) and the outlet (163). The outlet (163) is connected to the heating channel (211).

4. A zero-cold-water heater with dual water channels as described in claim 3, characterized in that: The heating assembly (2) includes a heating tube (21) and a radiator (22). The heating tube (21) is fitted inside the radiator (22). A secondary tube body (8) is detachably connected to one side of the radiator (22). A flow guide cavity (81) is provided inside the secondary tube body (8). The top of the water inlet base (1) is provided with a main mounting groove (13) and a secondary mounting groove (14). The main mounting groove (13) and the secondary mounting groove (14) are arranged adjacent to each other. The heating tube (21) is fixedly connected to the main mounting groove (13). The secondary tube body (8) is fixedly connected to the secondary mounting groove (14). The secondary mounting groove (14) connects the water outlet (163) and the flow guide cavity (81).

5. A zero-cold-water heater with dual water channels as described in claim 4, characterized in that: The heating tube (21) is fitted with a threaded tube (23), the heating channel (211) is located between the outer wall of the threaded tube (23) and the inner wall of the heating tube (21), and the direct current channel (231) is located in the inner cavity of the threaded tube (23); the main mounting groove (13) is provided with a connecting post (131), the threaded tube (23) is inserted into the connecting post (131), and the connecting post (131) connects the cold water inlet end (11) and the direct current channel (231).

6. A zero-cold-water heater with dual water channels as described in claim 5, characterized in that: It also includes a mixing chamber (15), which is connected to the bottom of the main mounting groove (13) and the auxiliary mounting groove (14), and the mixing chamber (15) is connected to the flow guide chamber (81) and the heating channel (211).

7. A zero-cold-water heater with dual water channels as described in claim 6, characterized in that: The auxiliary mounting groove (14) is equipped with a water flow sensor (4), which is used to detect the interruption and flow rate of water in the guide cavity (81).

8. A zero-cold-water heater with dual water channels as described in claim 7, characterized in that: The hot water outlet (32) is equipped with a water temperature sensor (5).

9. A zero-cold-water heater with dual water channels as described in claim 8, characterized in that: It also includes a main control circuit board, the outlet water temperature sensor (5) and the water flow sensor (4) are electrically connected to the main control circuit board, a thyristor is connected in series between the main control circuit board and the heating tube (21), and the main control circuit board is electrically connected to the motor (7) and the heating tube (21).

10. A zero-cold-water heater with dual water channels as described in claim 1, characterized in that: The heater is connected to an external water heater, and the hot water inlet (12) is connected to the hot water output of the water heater.

Images