Electric water heater capable of adjusting water storage capacity according to mode selected by user

Abstract

The invention discloses an electric water heater capable of adjusting water storage capacity according to user selection modes. The electric water heater comprises an inner container, a heating pipe assembly, a water inlet pipe, a first hot water pipe, a second hot water pipe and an electronic three-way valve. The inner container is provided with a water storage cavity, a flange plate is arranged at the first end of the inner container, and an end cover is arranged at the second end of the inner container. The heating pipe assembly is installed at the second end of the inner container and comprises at least one heating pipe. The water inlet pipe is mounted at the bottom of the liner through a fastener. One end of the first hot water pipe is connected with the electronic three-way valve, and the other end of the first hot water pipe is inserted into the water storage cavity of the inner container. One end of the second hot water pipe is connected with the electronic three-way valve, and the other end of the second hot water pipe is inserted into the water storage cavity of the inner container. According to the electric water heater, at least one heating pipe is arranged on the inner container, the second hot water pipe is additionally arranged, the function of controlling the actual water storage amount according to the user mode is achieved, and the effects of electricity saving and quick heating are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric water heaters, and in particular to an electric water heater capable of adjusting a water storage amount according to a mode selected by a user. Background Art

[0002] Please refer to the instruction manual Figure 1 The core of the conventional electric water heater mainly includes: an inner tank assembly 100 and an electric heating pipe 101, a water inlet pipe 102, a water outlet pipe 103, an electric shock wall 104 and a magnesium rod 105 installed on the inner tank assembly 100. The working principle of the conventional electric water heater is as follows: after the electric heating pipe 101 is powered on, the water of a specific volume stored in the inner tank assembly 100 is heated, and the heating is stopped after the water reaches a predetermined temperature. The water inlet switch of the water inlet pipe 102 is normally open, and the tap water enters the inner tank assembly 100 from the water inlet pipe 102 and is heated. Since the specific gravity of cold water is greater than that of hot water, the heated hot water is in the upper layer of the cold water. The water inlet of the water outlet pipe 103 is at the top position of the hot water stored in the inner tank assembly 100. After the high-level hot water is output from the water outlet pipe 1033, it outputs hot water of constant temperature through the externally connected mixing valve, thereby meeting the use needs of users.

[0003] In actual use scenarios, conventional electric water heaters have the following main defects:

[0004] 1. Since there is only one water outlet pipe, and the outlet of the water outlet pipe is usually installed close to the top of the inner tank, the water intake each time must reach the rated water storage value of the electric water heater. The water storage capacity is fixed and cannot be changed. The amount of water heated each time is large, which results in high power consumption. For example, when the rated water storage capacity is 50L, 50L of water must be heated to the set temperature for two people to bathe; but when only one person bathes, the actual water consumption is only 25-30L, resulting in the heating time for one person being the same as that for two people, and the power consumption is the same. When one person finishes bathing, there is too much hot water remaining in the tank, which wastes both water and electricity.

[0005] 2. Since there is only one electric heating tube, it takes a long time to wait for heating when bathing, and there is no way to quickly heat the stored water;

[0006] 3. The output of hot water for bathing is insufficient to meet the needs of multiple people at the same time. For example, when the rated water storage capacity is 50L, it can only be used by two people when heated to the set temperature, which cannot meet the needs of three to four people. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides an electric water heater capable of adjusting the water storage amount according to a mode selected by a user, so as to overcome the deficiencies in the prior art.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] An electric water heater capable of adjusting the water storage amount according to a user-selected mode, comprising an inner tank, a heating component, a water inlet pipe, a first hot water pipe, a second hot water pipe and an electronic three-way valve;

[0010] The inner container is provided with a water storage cavity, a flange is provided at the first end of the inner container, and an end cover is provided at the second end of the inner container;

[0011] The heating tube assembly is mounted on the end cover of the second end of the inner tank by means of a fastener, and the heating tube assembly includes at least one heating tube; one end of the heating tube is fixed on the end cover of the inner tank, and the other end is inserted into the water storage cavity of the inner tank;

[0012] The water inlet pipe is compressed by the anti-electric wall and installed at the bottom of the inner tank through fasteners;

[0013] The first hot water pipe is installed at the bottom of the inner tank through a fastener, one end of the first hot water pipe is connected to the electronic three-way valve, and the other end is inserted into the water storage cavity of the inner tank, and the inner end of the first hot water pipe is located at a low position of the water storage cavity of the inner tank;

[0014] The second hot water pipe is fastened to the flange at the first end of the inner tank, one end of the second hot water pipe is connected to the electronic three-way valve, and the other end passes through the flange and is inserted into the water storage cavity of the inner tank. The inner end of the second hot water pipe is at a high position in the water storage cavity of the inner tank.

[0015] Furthermore, the heating tube assembly includes two heating tubes; the two heating tubes are installed on the end covers of the inner tank at intervals through fasteners, and the first heating tube is installed at a low position of the end cover, and the second heating tube is installed at a high position of the end cover.

[0016] Furthermore, the parts of the water inlet pipe and the second hot water pipe extending into the inner tank do not contact the heating tube.

[0017] Preferably, a temperature probe is provided on the heating tube.

[0018] Preferably, the electric water heater of the present case, which can adjust the water storage amount according to the mode selected by the user, also includes a magnesium rod that can be replaced regularly, and the magnesium rod is installed at the bottom of the inner tank through a fastener.

[0019] Preferably, an electric water heater in the present case that can adjust the water storage amount according to the user selection mode also includes a user control panel arranged on the inner tank shell, and the user control panel is provided with a plurality of control buttons and a plurality of display units; the user control panel is electrically connected to the electronic three-way valve, the heating tube assembly, the control buttons and the display unit.

[0020] Preferably, an arrow mark is engraved on the heating tube, and during installation, the arrow mark of the heating tube is installed in a direction closest to the inner tank wall.

[0021] Preferably, the flange is pressed by a pressing plate and then locked on the inner container by a fastener.

[0022] Preferably, one end of the second hot water pipe is directly connected to the electronic three-way valve or connected through a hose.

[0023] Preferably, the water inlet pipe is provided with a water retaining cap.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1) The electric water heater of the present case can adjust the water storage amount according to the user's selection mode. At least one heating tube is arranged on the inner tank and a second hot water tube is added. The electronic three-way valve is used to control whether the final water outlet channel of the bathing hot water is the first hot water tube or the second hot water tube. Since the water outlet positions of the first heating tube and the second heating tube in the inner tank are different, one is at the low position of the water storage chamber and the other is at the high position of the water storage chamber, the function of controlling the actual water storage amount of the inner tank according to the user's selection mode is realized, thereby achieving the effects of reducing heating time and saving electricity, quick heating in different usage modes, short shower hot water heating time, and short user waiting time.

[0026] 2) The electric water heater in this case can adjust the water storage capacity according to the user's selection mode. According to the actual needs of the user, several different functional modes such as "single-person washing", "two-person washing" or "multi-person washing" can be selected, which is more in line with market demand.

[0027] 3) The electric water heater in this case can adjust the water storage capacity according to the user's selection mode, and can realize the alternating switching heating of the two heating tubes, which can increase the hot water output and the heating speed is also faster.

[0028] In order to more clearly understand the present invention, preferred embodiments of the present invention will be described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a conventional electric water heater in the background technology;

[0030] Figure 2 , Figure 3 is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0031] Figure 4 It is a schematic diagram of the overall structure of Example 2 of the present invention.

[0032] Figure ID:

[0033] 1- liner, 2- heating pipe assembly, 21- heating pipe, 3- water inlet pipe, 4- first hot water pipe, 5- second hot water pipe, 6- electronic three-way valve, 7- hose, 8- magnesium rod; 11- flange, 12- pressure plate;

[0034] In the background technology, 100 is an inner tank assembly, 101 is an electric heating tube, 102 is a water inlet pipe, 103 is a water outlet pipe, 104 is an anti-electric wall, and 105 is a magnesium rod. DETAILED DESCRIPTION

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0036] In addition, if there are terms such as "first" and "second", they are only used for descriptive purposes, mainly 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 relative importance.

[0037] In addition, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 an indirect connection through an intermediate medium, and it can be the internal connection of two elements; for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Example 1

[0039] See also Figure 2-3 The present invention provides an electric water heater that can adjust the water storage amount according to a user-selected mode, including an inner tank 1, a heating pipe assembly 2, a water inlet pipe 3, a first hot water pipe 4, a second hot water pipe 5 and an electronic three-way valve 6.

[0040] The inner liner 1 is provided with a water storage cavity. A flange 11 is provided at the first end of the inner liner 1. The flange 11 is pressed by a pressure plate 12 and then locked on the inner liner 1 by a fastener. An end cover is provided at the second end of the inner liner 1. The flange 11, the pressure plate 12 and the end cover seal the inner liner 1, so that the inner liner 1 forms a sealed water storage cavity.

[0041] The heating tube assembly 2 is mounted on the end cover of the second end of the inner tank 1 through a fastener. The heating tube assembly 2 includes at least one heating tube 21. One end of the heating tube 21 is fixed on the end cover of the inner tank 1, and the other end is inserted into the water storage cavity of the inner tank 1. A temperature probe is provided on the heating tube 21.

[0042] Preferably, in this embodiment, an arrow mark is engraved on the heating tube 21. During installation, the arrow mark of the heating tube 21 is installed in the direction closest to the inner tank wall, so that the heating tube 21 is closer to the inner tank wall, thereby more effectively improving the speed at which the heating tube 21 heats the water stored in the water storage cavity, and the rapid heating effect is more significant.

[0043] The water inlet pipe 3 is compressed by the anti-electrical wall and installed at the bottom of the inner tank 1 through fasteners, and the part of the water inlet pipe 3 extending into the inner tank 1 does not contact the heating tube 21;

[0044] A first hot water pipe 4 is installed at the bottom of the inner tank 1 by means of fasteners. One end of the first hot water pipe 4 is connected to the electronic three-way valve 6, and the other end is inserted into the water storage cavity of the inner tank 1, and the inner end of the first hot water pipe 4 is located at the lower position of the water storage cavity of the inner tank 1. During initial installation, the insertion length of the first hot water pipe 4 in the inner tank 1 is adjustable (the insertion length of the first hot water pipe 4 is adjusted according to the rated volume of the inner tank 1, for example, for an inner tank 1 with a rated water storage capacity of 50L, the insertion length of the first hot water pipe 4 is just adapted to the water storage capacity of 30L);

[0045] The second hot water pipe 5 is fastened to the flange 11 at the first end of the inner tank 1. One end of the second hot water pipe 5 is directly connected to the electronic three-way valve 6 or connected through a hose 7. The other end of the second hot water pipe 5 passes through the flange 11 and is inserted into the water storage cavity of the inner tank 1. The inner end of the second hot water pipe 5 is located at a high position in the water storage cavity of the inner tank 1. During initial installation, the insertion length of the second hot water pipe 5 in the inner tank 1 is adjustable, and the portion of the second hot water pipe 5 inserted into the inner tank 1 does not contact the heating tube 21.

[0046] Furthermore, in the present case, an electric water heater capable of adjusting the water storage amount according to a user-selected mode also includes a magnesium rod 8 that can be replaced regularly, and the magnesium rod 8 is installed at the bottom of the inner tank 1 through fasteners; the magnesium rod 8 protects the inner tank 1 and the heating element of the electric water heater through its own corrosion. Since the chemical activity of magnesium is higher than that of iron, it will preferentially react with impurities and minerals in the water, thereby reducing the corrosion of the inner tank 1 and the heating element and extending the life of the equipment; at the same time, the magnesium rod 8 can also reduce the accumulation of scale on the inner tank 1 and the heating element, thereby maintaining the efficient operation of the water heater.

[0047] Furthermore, an electric water heater in the present case that can adjust the water storage amount according to the user's selected mode also includes a user control panel (not shown) arranged on the outer shell of the inner tank 1, and a plurality of control buttons and a plurality of display units are arranged on the user control panel. The user control panel is electrically connected to the electronic three-way valve 6, the heating tube assembly 2, the control buttons and the display unit; the user can set the use mode through the control button, such as the user can select the "single person washing", "two people washing" or "multi-person washing" mode; the display unit is used to display the current use status of the electric water heater.

[0048] Preferably, in this embodiment, the heating tube assembly 2 includes two heating tubes 21; the two heating tubes 21 are installed on the end covers of the inner tank 1 at intervals through fasteners, and the first heating tube 21 is installed at a low position of the end cover, so that the first heating tube 21 corresponds to the height of the inner end pipe mouth of the first hot water pipe 4, and the second heating tube 21 is installed at a high position of the end cover, so that the second heating tube 21 corresponds to the height of the inner end pipe mouth of the second hot water pipe 5, thereby further improving the rapid heating effect.

[0049] Preferably, the water inlet pipe 3 is provided with a water retaining cap.

[0050] Preferably, in this embodiment, the fastener is a nut and a screw head threadedly connected to each other or a nut and a bolt threadedly connected to each other.

[0051] In this case, an electric water heater that can adjust the water storage amount according to the user's selection mode has the following working principle or workflow:

[0052] The electric water heater in this case can select several different functional modes of "single-person washing", "two-person washing" or "multi-person washing" according to the actual needs of the user. The actual water storage capacity in the water storage chamber of the inner tank 1 is also different in different functional modes. The heating tube assembly 2 only heats the actual water storage in the inner tank 1, thereby reducing the waiting time for heating the hot water for bathing and saving electricity. Taking the rated capacity of the electric water heater of 50L as an example (the rated capacity is the maximum water storage capacity of the water storage chamber of the inner tank 1, and the rated capacity is different from the actual water storage capacity), the explanation is as follows;

[0053] 1. When only one person is using it, select the "single-person wash" function mode, the electronic three-way valve 6 opens the valve of the first hot water pipe 4, and closes the valve of the second water outlet. Since the inner end of the first hot water pipe 4 is at a low position in the water storage chamber and is adapted to the water storage capacity of about 30L, the actual water storage capacity of the inner tank 1 in this mode is only about 30L, and the heating tube assembly 2 starts heating (if two heating tubes 21 are installed, the first heating tube 21 at a low position starts heating first), and the heating is stopped when the temperature probe detects that the water temperature in the tank reaches the set temperature of 75°C. When the user uses it, the first hot water pipe 4 outputs hot water, and then the thermostatic valve connected externally outputs the appropriate water temperature, which can meet the bathing needs of one person. When one person is finished using it, there will be no excess hot water in the inner tank 1 to be wasted, and because the actual water output is small, the heating speed is fast, and the waiting time is short, it can save electricity.

[0054] 2. When the "two-person bathing mode" is selected, the electronic three-way valve 6 opens the valve of the second hot water pipe 5 and closes the valve of the first water outlet. Since the height of the inner end of the second hot water pipe 5 is at the high position of the water storage chamber and is adapted to the water storage capacity of about 50L, the actual water storage capacity of the inner tank 1 in this mode is about 50L, and the heating tube assembly 2 starts heating (if two heating tubes 21 are installed, the second heating tube 21 at the high position starts heating first). When the temperature probe detects that the water temperature in the tank reaches the set temperature of 80°C, the heating stops. When the user uses it, the second hot water pipe 5 outputs hot water, and then the thermostatic valve connected externally outputs the appropriate water temperature. The output hot water can meet the bathing needs of two people.

[0055] 3. When the "multi-person wash mode" is selected, the electronic three-way valve 6 opens the valve of the second hot water pipe 5 and closes the valve of the first water outlet. Since the height of the inner end of the second hot water pipe 5 is at the high position of the water storage chamber and is adapted to the water storage capacity of about 50L, the actual water storage capacity of the inner tank 1 in this mode is about 50L, and the heating tube assembly 2 starts heating (if two heating tubes 21 are installed, the second heating tube 21 at the high position starts heating first). When the temperature probe detects that the water temperature in the tank has reached the set temperature of 80°C, the heating is stopped and the user can take a bath.

[0056] During use, when the temperature probe detects that the water temperature in the tank is 5°C lower than the set temperature, the heating tube assembly 2 starts heating again (if two heating tubes 21 are installed, the second heating tube 21 at a higher position starts heating), thereby rapidly increasing the hot water production, so that the output hot water can meet the bathing needs of 3-4 people, solving the problem of long waiting time when multiple people take a bath.

[0057] When the temperature probe detects that the water temperature in the tank is lower than 38°C, there is no hot water in the tank 1 for the user to use, and the heating tube assembly 2 starts heating again, repeating the above heating logic.

[0058] Example 2

[0059] See also Figure 4 The difference between Example 2 and Example 1 is that the inner liner of Example 1 is horizontal, while the inner liner of Example 2 is vertical.

[0060] Compared with the prior art, the electric water heater in this case can adjust the water storage amount according to the user's selection mode. At least one heating tube is arranged on the inner tank and a second hot water tube is added. The electronic three-way valve is used to control whether the final water outlet channel of the hot water for bathing is the first hot water tube or the second hot water tube. Since the water outlet positions of the first heating tube and the second heating tube in the inner tank are different, one is at the lower position of the water storage chamber and the other is at the higher position of the water storage chamber, the function of controlling the actual water storage amount of the inner tank according to the user's selection mode is realized, thereby achieving the effects of reducing heating time and saving electricity, quick heating in different usage modes, short shower hot water heating time, and short user waiting time.

[0061] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An electric water heater capable of adjusting the water storage capacity according to a user-selected mode, characterized in that: It comprises an inner tank (1), a heating component (2), a water inlet pipe (3), a first hot water pipe (4), a second hot water pipe (5) and an electronic three-way valve (6); The inner container (1) is provided with a water storage cavity, a flange (11) is provided at a first end of the inner container (1), and an end cover is provided at a second end of the inner container (1); The heating tube assembly (2) is mounted on the end cover of the second end of the inner tank (1) by means of a fastener, and the heating tube assembly (2) comprises at least one heating tube (21); one end of the heating tube (21) is fixed on the end cover of the inner tank (1), and the other end is inserted into the water storage cavity of the inner tank (1); The water inlet pipe (3) is installed at the bottom of the inner tank (1) through fasteners after being pressed by the anti-electrical wall; The first hot water pipe (4) is installed at the bottom of the inner tank (1) by means of a fastener, one end of the first hot water pipe (4) is connected to the electronic three-way valve (6), and the other end is inserted into the water storage cavity of the inner tank (1), and the inner end of the first hot water pipe (4) is located at a low position in the water storage cavity of the inner tank (1); The second hot water pipe (5) is fixedly secured to the flange (11) at the first end of the inner tank (1); one end of the second hot water pipe (5) is connected to the electronic three-way valve (6); the other end of the second hot water pipe (5) passes through the flange (11) and is inserted into the water storage chamber of the inner tank (1); the inner end of the second hot water pipe (5) is located at a high position in the water storage chamber of the inner tank (1).

2. The electric water heater capable of adjusting the water storage amount according to the user selected mode according to claim 1, characterized in that: The heating tube assembly (2) comprises two heating tubes (21); the two heating tubes (21) are respectively installed on the end cover of the inner tank (1) at intervals through fasteners, and the first heating tube (21) is installed at a low position of the end cover, and the second heating tube (21) is installed at a high position of the end cover.

3. The electric water heater capable of adjusting the water storage amount according to the user selected mode according to claim 2, characterized in that: The parts of the water inlet pipe (3) and the second hot water pipe (5) extending into the inner tank (1) do not contact the heating pipe (21).

4. The electric water heater capable of adjusting the water storage amount according to the user selected mode according to claim 1, characterized in that: The heating tube (21) is provided with a temperature probe.

5. The electric water heater capable of adjusting the water storage amount according to the user selected mode according to claim 1, characterized in that: It also includes a magnesium rod (9) that can be replaced regularly, and the magnesium rod (9) is installed on the bottom of the inner container (1) through a fastener.

6. The electric water heater capable of adjusting the water storage amount according to the user selected mode according to claim 1, characterized in that: It also includes a user control panel arranged on the outer shell of the inner tank (1), on which a plurality of control buttons and a plurality of display units are arranged; the user control panel is electrically connected to the electronic three-way valve (6), the heating tube assembly (2), the control buttons and the display unit.

7. The electric water heater capable of adjusting the water storage amount according to the user selected mode according to claim 1, characterized in that: The heating tube (21) is engraved with an arrow mark, and when installing, the heating tube (21) is installed with the arrow mark facing the direction closest to the inner tank wall.

8. The electric water heater capable of adjusting the water storage amount according to the user selected mode according to claim 1, characterized in that: The flange (11) is pressed by a pressing plate (12) and then locked on the inner container (1) by a fastener.

9. The electric water heater capable of adjusting the water storage amount according to a user selected mode according to claim 1, characterized in that: One end of the second hot water pipe (5) is directly connected to the electronic three-way valve (6) or connected via a hose (7).

10. The electric water heater capable of adjusting the water storage amount according to the user selected mode according to claim 1, characterized in that: The water inlet pipe (3) is provided with a water retaining cap.

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