Dual-mode water heater

Abstract

The utility model discloses a dual-mode water heater which comprises a water tank, a water containing cavity is formed in the water tank, at least two electric heating elements are detachably installed on the water tank, one end of each electric heating element extends into the water containing cavity, and a water passing heated pipe is installed in the water containing cavity. The water tank is further provided with a water supplementing assembly and a water inlet and outlet constant-temperature assembly. The water supplementing assembly comprises a water supplementing pipe communicated with the water containing cavity and a water supplementing switch installed on the water supplementing pipe. The water inlet and outlet constant-temperature assembly comprises a water inlet pipe, a water outlet pipe and a water volume adjusting component, the water inlet pipe is communicated with the water supplementing pipe and the water inlet end of the water passing heated pipe, and the water outlet end of the water passing heated pipe is communicated with the water outlet pipe. The water tank can heat independently or simultaneously, the heating mode is flexible, the electric heating element is convenient to assemble, disassemble, replace or maintain, the safety of the water tank can be guaranteed by arranging the pressure release valve, and impurities such as scale can be reduced by arranging the water filter.

Description

Technical Field

[0001] The utility model relates to the technical field of electric water heaters, in particular to a dual-mode water heater. Background Art

[0002] Electric water heaters are commonly used electric heating devices in daily life. They can be installed and hidden in furniture such as bathroom cabinets or cupboards. They heat the water in the water tank through electric heating elements such as electric heating tubes, electric heating rods, and electric heating wires. The heated water flows out of the faucet for people to bathe, wash dishes, wash vegetables, etc. The heated water makes people more comfortable to use in cold weather.

[0003] Existing electric water heaters have some or all of the following deficiencies. First, there is only one electric heating element, and the power is fixed. Therefore, the output of hot water is also fixed, and the hot water supply cannot be increased or decreased; it is not possible to choose different installation and use conveniences according to the different wiring in the user's home, and the applicability is poor; it is also not possible to choose electric heating elements of different powers for heating according to different seasons and different indoor temperatures, and the use is not flexible and convenient; second, the structural design is not reasonable, water replenishment is not convenient, and there is no suitable pressure relief device to ensure the safety of the water tank; third, the water in the pipe is heated slowly, resulting in a slow speed of heating water and hot water output; fourth, scale and other attachments are easily generated in the water tank and pipe, affecting the heating speed and water cleanliness; fifth, the electric heating element cannot be disassembled or the installation and disassembly are troublesome, resulting in inconvenient replacement or maintenance. Utility Model Content

[0004] In order to overcome at least one of the technical problems existing in the prior art, the utility model provides a dual-mode water heater, which is equipped with at least two electric heating elements, can heat independently or simultaneously, has a flexible heating method, and the electric heating elements are easy to install and disassemble, and are convenient to replace or repair. A pressure relief valve is provided to ensure the safety of the water tank. A water filter can reduce impurities such as scale. A thermal insulation layer is provided to prevent heat loss and avoid scalding the human body and objects due to the high temperature of the water tank.

[0005] A dual-mode water heater comprises a water tank, a water containing cavity is arranged in the water tank, two electric heating elements are detachably installed on the water tank, and three or four electric heating elements can also be installed, one end of each electric heating element extends into the water containing cavity, a water-passing and heating pipe is installed in the water containing cavity, and each electric heating element can be used to heat the water in the water containing cavity and the water-passing and heating pipe independently or simultaneously; a water replenishing assembly and an inlet and outlet water constant temperature assembly are also installed on the water tank, the water replenishing assembly comprises a water replenishing pipe connected to the water containing cavity, and a water replenishing switch installed on the water replenishing pipe; the inlet and outlet water constant temperature assembly comprises a water inlet pipe, a water outlet pipe and a water volume regulating component, the water inlet pipe is respectively connected to the water replenishing pipe and the water inlet end of the water-passing and heating pipe, the water outlet end of the water-passing and heating pipe is connected to the water outlet pipe, and a pressure relief valve is also installed on the water tank, one end of the pressure relief valve is connected to the water containing cavity.

[0006] In some embodiments, a fixing member is installed in the water containing cavity for fixing the water-passing heated pipe; the water-passing heated pipe is stacked and distributed in the water containing cavity for increasing the heating area of ​​the water in the water containing cavity.

[0007] In some embodiments, there are multiple fixing members, and the water-passing heated pipe is installed and fixed between the multiple fixing members.

[0008] In some embodiments, a temperature sensor is installed in the water containing chamber or on the water outlet pipe, and a water level sensor is also installed in the water containing chamber.

[0009] In some embodiments, a thermal insulation layer is wrapped around the periphery of the water tank.

[0010] In some embodiments, a water filter is connected to the water inlet end of the water inlet pipe.

[0011] In some embodiments, at least two flanges are installed on the outer wall of the water pipe, one end of the electric heating element passes through the flange and extends into the water containing cavity, and the other end of the electric heating element is sealed and locked on the flange by a fastener.

[0012] In some embodiments, the water tank is made of stainless steel, and there are two electric heating elements, one with a power of 1500W and the other with a power of 5500W.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0015] Figure 1 It is a schematic diagram of the front appearance of this application;

[0016] Figure 2 is a front cross-sectional schematic diagram of the present application;

[0017] Figure 3 is a top cross-sectional schematic diagram of the present application;

[0018] Figure 4 It is a schematic diagram of the display control panel of the present application.

[0019] Reference numerals:

[0020] Water tank 1, water containing chamber 2, display control panel 3;

[0021] A gear button 300, water outlet temperature display 301, flow rate display 302, inner tank temperature display 303, B gear button 304, water shortage indicator light 305, setting button 306, power switch 307;

[0022] Electric heating element 4;

[0023] Water replenishment component 5, water replenishment pipe 500, water replenishment switch 501;

[0024] Inlet and outlet water thermostatic components 6, water inlet pipe 600, water outlet pipe 601, water volume regulating component 602;

[0025] The water-passing heating pipe 7, the pressure relief valve 8, the fixing part 9, the temperature sensor 10, the water flow meter 11, the water level sensor 12, the thermal insulation layer 13, the water filter 14, the flange 15, and the fastener 16. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside", etc., are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Reference Figure 1-Figure 4A dual-mode water heater comprises a water tank 1, a water holding cavity 2 is arranged in the water tank 1, a display control panel 3 is installed on the outer wall of the water tank 1, at least two electric heating elements 4 are detachably installed on the water tank 1, replacement and maintenance are more convenient, the electric heating element 4 can be an electric heating rod, an electric heating tube, an electric heating wire or other suitable components; one end of each electric heating element 4 extends into the water holding cavity 2, and a water-passing heating tube 7 is installed in the water holding cavity 2; the dual mode described in this application refers to at least two electric heating elements 4, each of which can be used independently or simultaneously to heat the water in the water holding cavity 2 and the water passing through the water holding cavity 2. The water in the water heating tube 7 can provide at least two heating modes with different powers. The present application is generally installed horizontally in a cabinet or bathroom cabinet; a water replenishment component 5 and an inlet and outlet water thermostat component 6 are also installed on the water tank 1. The water replenishment component 5 includes a water replenishment pipe 500 connected to the water holding chamber 2 and a water replenishment switch 501 installed on the water replenishment pipe 500. The water replenishment switch 501 is used to open or close the water replenishment pipe 500; the inlet and outlet water thermostat component 6 includes an inlet pipe 600, an outlet pipe 601, and a water volume regulating component 602. A mixing device is connected between the inlet pipe 600 and the outlet pipe 601. The water pipe is provided with an electric on-off valve. When the electric on-off valve is opened, part of the tap water enters the water outlet pipe 601 through the water mixing pipe, so that the tap water is mixed with the hot water to adjust the outlet water temperature, so that the outlet water temperature reaches a constant temperature effect, and avoids or reduces the large changes in the outlet water temperature. The temperature sensor 10 installed on the outlet pipe 601 is used to detect the outlet water temperature, and the electric on-off valve is controlled to be opened or closed according to the outlet water temperature; the water replenishment switch 501 and the water volume adjustment component 602 can be a faucet or a regulating valve and other components, which can be used to control the size of the water inlet and outlet , and realize the closing or conducting function; the water inlet pipe 600 is respectively connected with the water supply pipe 500 and the water inlet end of the water-passing and heating pipe 7, and the water outlet end of the water-passing and heating pipe 7 is connected with the water outlet pipe 601. A pressure relief valve 8 is also installed on the water tank 1, and one end of the pressure relief valve 8 is connected with the water containing chamber 2; the pressure relief valve 8 is also called a pressure limiting valve or an exhaust valve, etc. Its main function is that during the heating process, when the pressure in the water tank 1 reaches the working pressure, the pressure relief valve 8 exhausts through the exhaust hole to avoid the pressure of the water tank 1 from continuing to rise and prevent the occurrence of safety accidents. Its working principle is the same or similar to that used in a pressure cooker.

[0031] When in use, first open the water replenishment switch 501 to allow tap water to enter the water tank 1, and add the medium water in the water tank 1 to a predetermined height, such as two-thirds or three-quarters of the height of the water tank 1, and then close the water replenishment switch 501. Figure 4, then turn on the power switch 307 on the display control panel 3 on the electric water heater, the electric heating element 4 starts to heat the medium water in the water tank 1, and the medium water then conducts heat to the water-passing heating pipe 7 and the tap water inside it; when the water outlet switch connected to the end of the water outlet pipe 601 is turned on, the tap water flows out of the water switch through the water inlet pipe 600, the water-passing heating pipe 7, and the water outlet pipe 601 in sequence, and hot water is used by people. The present application is provided with two electric heating elements 4, for example, one with a power of 1500W and the other with a power of 5500W, Figure 4 The power of the A gear is 5500W, and the power of the B gear is 7000W. When the B gear is started, the two electric heating elements 4 work at the same time. In spring and summer or when the temperature is high, only the electric heating element 4 with a power of 5500W can be started to meet people's demand for hot water; in autumn and winter or when the temperature is low, the two electric heating elements 4 with a power of 5500W and a power of 1500W can be started at the same time; because the power is increased, the electric heating element 4 heats the tap water faster, and the speed and amount of hot water output are also greater; in addition, the corresponding electric heating element 4 can be selected and connected for heating according to the specifications of the power line laid in the user's home. For example, if the user's home is equipped with a 2.5 square power line (i.e., the copper core diameter is 1.78 mm), then only the 5500W electric heating element 4 can be connected, and the 1500W electric heating element 4 is left unconnected; if the user's home is equipped with a 4 square power line (i.e., the copper core diameter is 2.26 mm), then both the 5500W and 1500W electric heating elements 4 can be connected and enabled at the same time, which is more flexible and convenient. Figure 4 The display control panel 3 is provided with an A gear button 300, a water outlet temperature display 301, a flow display 302, an inner tank temperature display 303, a B gear button 304, a water shortage indicator light 305, a setting button 306, a power switch 307, etc.

[0032] In some embodiments, a fixing member 9 is installed in the water chamber 2, which may be an L-shaped stainless steel plate or a cylindrical stainless steel column, and is used to fix the water-passing heating tube 7 to prevent the water-passing heating tube 7 from shifting and generating noise when the medium water boils; the water-passing heating tube 7 is stacked and distributed in the water chamber 2 to increase the heating area of ​​the water in the water chamber 2 and increase the speed of heating the tap water; one end of the two electric heating elements 4 passes through the gap between the stacked water-passing heating tubes 7 and extends into the water chamber 2.

[0033] In some embodiments, four fixing members 9 are selected, and the water-passing heat pipe 7 is installed and fixed between multiple fixing members 9. The two can be further fixed by welding or by components such as stainless steel cable ties and buckles to improve stability.

[0034] In some embodiments, a temperature sensor 10 is installed in the water holding chamber 2 or on the water outlet pipe 601. The temperature sensor 10 is a sensor that can sense temperature and convert it into a usable output signal, which can be used to detect water temperature and facilitate water temperature control; a water flow meter 11 is also installed in the water outlet pipe 601, which is used to detect the hot water flow of the water outlet pipe 601; two water level sensors 12 are also installed in the water holding chamber 2, one is located at the lower end of the water tank 1, which is used to detect the lowest water level, and the other is located at the upper end of the water tank 1, which is used to detect the highest water level. The water level sensor 12 is an instrument that can convert the water level parameter of the measured point into a corresponding electrical signal in real time, so that the user can know the amount of medium water in the water tank 1 to prevent dry burning or overflow.

[0035] In some embodiments, a thermal insulation layer 13 is wrapped around the outer periphery of the water tank 1, which may be composed of a rock wool board, an insulating color steel sandwich panel, a porous insulation board, thermal insulation cotton, etc.; the thermal insulation layer 13 can prevent heat loss and prevent the water tank 1 from scalding the human body and objects due to the high temperature.

[0036] In some embodiments, a water filter 14 is connected to the water inlet end of the water inlet pipe 600, and filter materials such as filter cotton, activated carbon, and quartz sand can be arranged in the water filter 14, which can be used to filter out or reduce the sediment, rust, colloid, macromolecular organic matter, etc. in the water, thereby reducing the accumulation of impurities or other dirt in the water tank 1 and the water pipe, making the hot water flowing cleaner and odor-free.

[0037] In some embodiments, at least two flanges 15 are installed on the outer wall of the water pipe. One end of the electric heating element 4 passes through the flange 15 and extends into the water containing chamber 2. The mounting plate at the other end of the electric heating element 4 is sealed and locked on the flange 15 by a fastener 16. A sealing ring can also be installed between the two to further prevent water leakage. The fastener 16 can be a screw, bolt, etc. The electric heating element 4 is easy to install and disassemble, and is convenient for replacement or maintenance.

[0038] In some embodiments, the water tank 1 is made of 304 or 316 stainless steel, and there are two electric heating elements 4, one with a power of 1500W and the other with a power of 5500W. The two electric heating elements 4 can heat independently or simultaneously, and the heating method is flexible and convenient with good applicability.

[0039] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. Although the embodiments of the utility model have been shown and described, ordinary technicians in this field can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and purpose of the utility model. The scope of the utility model is defined by the claims and their equivalents.

Claims

1. A dual-mode water heater, comprising a water tank, wherein a water containing cavity is provided in the water tank, wherein: At least two electric heating elements are detachably installed on the water tank, one end of each electric heating element extends into the water containing chamber, a water-passing heating pipe is installed in the water containing chamber, and each electric heating element can be used independently or simultaneously to heat the water in the water containing chamber and the water-passing heating pipe; a water replenishing assembly and an inlet and outlet water constant temperature assembly are also installed on the water tank, the water replenishing assembly includes a water replenishing pipe connected to the water containing chamber, and a water replenishing switch installed on the water replenishing pipe; the inlet and outlet water constant temperature assembly includes an inlet pipe, an outlet pipe and a water volume regulating component, the inlet pipe is respectively connected to the water replenishing pipe and the water inlet end of the water-passing heating pipe, the water outlet end of the water-passing heating pipe is connected to the outlet pipe, and a pressure relief valve is also installed on the water tank, one end of the pressure relief valve is connected to the water containing chamber.

2. The dual-mode water heater according to claim 1, characterized in that: A fixing piece is installed in the water containing cavity for fixing the water-passing heating pipe; the water-passing heating pipe is stacked and distributed in the water containing cavity for increasing the heating area of ​​the water in the water containing cavity.

3. The dual-mode water heater according to claim 2, characterized in that: There are multiple fixing parts, and the water-passing heated pipe is installed and fixed between the multiple fixing parts.

4. The dual-mode water heater according to any one of claims 1 to 3, characterized in that: A temperature sensor is installed in the water containing cavity or on the water outlet pipe, and a water level sensor is also installed in the water containing cavity.

5. The dual-mode water heater according to claim 4, characterized in that: The outer periphery of the water tank is wrapped with a thermal insulation layer.

6. The dual-mode water heater according to claim 5, characterized in that: A water filter is connected to the water inlet end of the water inlet pipe.

7. The dual-mode water heater according to claim 6, characterized in that: At least two flanges are installed on the outer wall of the water pipe. One end of the electric heating element passes through the flange and extends into the water containing cavity. The other end of the electric heating element is sealed and locked on the flange through a fastener.

8. The dual-mode water heater according to claim 7, characterized in that: The water tank is made of stainless steel and has two electric heating elements, one with a power of 1500W and the other with a power of 5500W.

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