Digital display rotation control device and electric water heater

Abstract

The utility model discloses a digital display rotation control device and an electric water heater, the digital display rotation control device comprises a base, a circuit board, a digital display, a rotary encoder and a hollow knob with an opening at one end, and the base comprises a cylinder part with an opening at one end, an annular seat, a power supply, a control line hole, a fixed column and a counter bore; a shaft hole is formed in the circuit board; a driving rod is arranged on the knob; the digital displayer and the rotary encoder are arranged on the front surface and the rear surface of the circuit board respectively, the circuit board is embedded into the counter bore, the screw penetrates through the circuit board to be screwed with the fixing column, the knob is in rotating fit with the cylinder part, and an end plate of the knob serves as an observation window plate. Only by rotating the knob and driving the encoder, on-off control and temperature adjustment of the circuit board are achieved, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to an electric water heater, in particular to a digital rotary control device. Background Art

[0002] The current existing technology, Chinese Patent 202120191349.3, a gas water heater or gas wall-mounted boiler with a display operation function knob, includes a housing and a circuit board for controlling the start and shut down of the gas water heater or gas wall-mounted boiler, and also includes a knob externally pivoted to the accommodating cavity in the front-to-back direction. The knob includes a touch screen, a rotating body rotating around the outer edge of the touch screen, and an encoder. The touch screen is used for display and operation, and the rotating body is used to adjust the temperature or time; the touch screen and the encoder are respectively electrically connected to the circuit board, and the rotating body is engaged with the encoder. The problem is: the operation is complicated, not only touching but also knobs are required. Utility Model Content

[0003] The purpose of the utility model is to provide a digital display rotary control device, which has the characteristics of realizing temperature setting and enlightenment by rotation.

[0004] The utility model is realized as follows: a digital display rotary control device, which is special in that it includes a base, a circuit board, a digital display, a rotary encoder and a hollow knob with an open end.

[0005] The base includes a cylindrical body with an open end, an annular seat, holes for power and control lines, a fixing column and a countersunk hole;

[0006] The circuit board is provided with an axis hole; the knob is provided with a driving rod;

[0007] The digital display and the rotary encoder are respectively arranged on the front surface and the rear surface of the circuit board. The circuit board is embedded in the countersunk hole. The screw passes through the circuit board and is screwed into the fixed column. The knob is rotated to cooperate with the cylinder body, and the end plate of the knob serves as an observation window plate.

[0008] The digital display rotary control device is special in that: a positioning block is provided in the countersunk hole; a positioning groove is provided on the circuit board, and the positioning block and the positioning groove are engaged.

[0009] The digital display rotation control device is special in that the fixing column intersects with the inner cavity of the barrel.

[0010] The special feature of the digital display rotary control device is that the annular seat is square or circular;

[0011] The special feature of the digital display rotary control device is that: the annular seat is provided with a closing mark, a low temperature mark and a high temperature mark;

[0012] An indicating protrusion is provided on the outer circumferential surface of the knob.

[0013] The digital display rotation control device is special in that: the opening end of the cylindrical portion of the base is provided with an annular guide hinge plate;

[0014] The knob is provided with circularly distributed hooks and axial protrusions in sequence from the open end to the closed end;

[0015] The annular guide hinge plate is located between the clasp and the axially protruding end.

[0016] An electric water heater, which is special in that it comprises a shell, an inner tank, an electric heating tube, a temperature sensor, a bracket, an indicator light and the digital display rotary control device as described above,

[0017] The shell is provided with a shell power data line hole and a shell connection hole; the closed end of the cylindrical part of the base is provided with a seat connection hole;

[0018] The bracket is provided with holes for power and data cables and screw holes;

[0019] The annular seat is fitted with the shell, and the screws pass through the seat connecting hole and the shell connecting hole and are screwed together with the screw holes; the indicator light is arranged on the upper part of the bracket and is fitted with the lamp hole on the shell.

[0020] The electric water heater is special in that: the housing is provided with a front-opening accommodating cavity, and the bottom plate of the accommodating cavity is provided with the housing connection hole;

[0021] There is a distance between the annular seat and the closed end of the cylindrical portion;

[0022] The barrel portion is inserted into the accommodating cavity.

[0023] The electric water heater is characterized in that: the bracket is made of plastic material, the bracket is provided with a locking rod, and the locking rod comprises a rod body, a locking head and an air-avoiding groove;

[0024] A locking hole is provided on the bottom plate of the accommodating cavity;

[0025] The locking head is locked with the bottom plate of the accommodating cavity, and the rod body is located in the locking hole.

[0026] The utility model discloses a digital display rotary control device, which can realize circuit board control switching and temperature adjustment by simply rotating a knob to drive an encoder, and has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a cross-sectional view of the present utility model.

[0028] Figure 2 It is the main view of the present utility model.

[0029] Figure 3 This is one of the three-dimensional exploded views of the present invention.

[0030] Figure 4 This is the second three-dimensional exploded view of the present invention.

[0031] Figure 5 It is a partial three-dimensional exploded view of the utility model. DETAILED DESCRIPTION

[0032] The following describes embodiments of the present invention in detail. 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0033] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0034] Example 1

[0035] like Figure 1 、 Figure 3 、 Figure 4 As shown, a digital display rotary control device 1 includes a base 2, a circuit board 3, a digital display 4, a rotary encoder 5 and a hollow knob 6 with an open end.

[0036] The base 2 includes a cylindrical portion 21 with an open end, an annular seat 22, holes for power and control lines (not marked in the figure), a fixing column 23 and a countersunk hole 24;

[0037] The circuit board 3 is provided with an axis hole; the knob 6 is provided with a driving rod 61;

[0038] The digital display 4 and the rotary encoder 5 are respectively arranged on the front surface and the rear surface of the circuit board 3. The circuit board 3 is engaged with the countersunk hole 24. The screw passes through the circuit board 3 and is screwed into the fixing column 23. The knob 6 is rotatably matched with the cylindrical body 21, and the end plate of the knob 6 serves as an observation window plate.

[0039] As a further improvement of the present invention: a positioning block 241 is provided in the countersunk hole 24; a positioning groove 31 is provided on the circuit board 3, and the positioning block 241 is engaged with the positioning groove 31.

[0040] As a further improvement of the present invention, the fixing column 23 intersects with the inner cavity of the cylindrical portion 21 .

[0041] The annular seat 22 is square or circular;

[0042] like Figure 2 As shown, the annular seat 22 is provided with a closing mark, a low temperature mark and a high temperature mark; such a design is intuitive and easy to operate;

[0043] An indicating protrusion is provided on the outer circumferential surface of the knob 6 .

[0044] As a further improvement of the present invention: the open end of the cylindrical portion 21 of the base 2 is provided with an annular guide hinge plate 211;

[0045] like Figure 5 As shown, the knob 6 is provided with circularly distributed hooks 62 and axial protrusions 63 from the open end to the closed end;

[0046] Annular guide hinge plate 211 is positioned between clasp 62 and axial projection 63 ends. Adopt such structure, when assembling, barrel portion and knob are directly plugged in and get final product, and assembling is easy, and can also prevent knob from coming off.

[0047] Example 2

[0048] like Figure 1 As shown, an electric water heater includes a shell 7, an inner tank 8, an electric heating tube 9, a temperature sensor 10, a bracket 11, an indicator light 12 and the digital display rotary control device 1 as described above.

[0049] The shell 7 is provided with a shell power data line hole 71 and a shell connection hole 72; the closed end of the cylindrical portion 21 of the base 2 is provided with a seat connection hole 212;

[0050] The bracket 11 is provided with a power and data cable hole 111 and a screw hole 112;

[0051] The annular seat 22 fits with the outer shell 7 , and the screw passes through the seat connection hole 212 and the shell connection hole 72 and screws into the screw hole 112 ; the indicator light 12 is arranged on the upper part of the bracket 11 and fits into the lamp hole 73 on the outer shell 7 .

[0052] As a further improvement of the present invention: the housing 7 is provided with a front-opening accommodating cavity 73, and the bottom plate of the accommodating cavity 73 is provided with the housing power and data cable hole 71 and the housing connection hole 72;

[0053] The annular seat 22 is spaced apart from the closed end of the cylindrical portion 21 , and the annular seat 22 is hollow with a rear opening;

[0054] The cylindrical portion 21 is inserted into the accommodating cavity 73 .

[0055] As a further improvement of the present invention: the bracket 11 is made of plastic material, and the bracket 11 is provided with a locking rod, which includes a rod body 1131, a locking head 1132 and an air-avoiding groove (not marked);

[0056] The bottom plate of the accommodating cavity 73 is provided with a locking hole 731;

[0057] The locking head 1132 is locked with the bottom plate of the accommodating cavity 73 , and the rod body 1131 is located in the locking hole 731 .

[0058] When the utility model is used, after powering on, directly turn the knob to enter the temperature setting state. The digital screen flashes to display the set temperature value. Each level corresponds to a temperature value of 1, and the temperature adjustment range is 30-75°C in a cycle. Rotate the knob clockwise to increase the temperature value; rotate the knob counterclockwise to decrease the temperature value.

[0059] If there is no operation within 5 seconds, the water heater confirms the current set temperature, exits the setting state, and digitally displays the actual water temperature.

[0060] The display board is welded with input neutral wire N, input live wire L, output live wire L, and temperature sensor wire.

[0061] The temperature sensor is used to sense the temperature near the water outlet of the inner tank and transmit it to the display screen to show the current actual temperature value.

[0062] When the actual temperature value is lower than the set temperature value, the heating indicator light will light up, the electric heating tube will start heating, and the heating state will be entered.

[0063] When the actual temperature value is equal to the set temperature value, the relay on the circuit board is disconnected, the heating indicator light goes out, the electric heating tube stops heating and enters the insulation state.

[0064] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A digital display rotary control device, characterized in that: It includes a base, a circuit board, a digital display, a rotary encoder and a knob with an open end. The base includes a cylindrical body with an open end, an annular seat, holes for power and control lines, a fixing column and a countersunk hole; The circuit board is provided with an axis hole; the knob is provided with a driving rod; The digital display and the rotary encoder are respectively arranged on the front surface and the rear surface of the circuit board. The circuit board is embedded in the countersunk hole. The screw passes through the circuit board and is screwed into the fixed column. The knob is rotated to cooperate with the cylinder body, and the end plate of the knob serves as an observation window plate.

2. A digital display rotary control device according to claim 1, characterized in that: A positioning block is provided in the countersunk hole; a positioning groove is provided on the circuit board, and the positioning block is engaged with the positioning groove.

3. The digital display rotation control device according to claim 1, characterized in that: The fixing column intersects with the inner cavity of the barrel portion.

4. The digital display rotation control device according to claim 1, characterized in that: The annular seat is square or circular.

5. The digital display rotation control device according to claim 1, characterized in that: The annular seat is provided with a closing mark, a low temperature mark and a high temperature mark; An indicating protrusion is provided on the outer circumferential surface of the knob.

6. A digital display rotary control device according to claim 1, 2, 3, 4 or 5, characterized in that: An annular guide hinge plate is provided at the open end of the cylindrical portion of the base; The knob is provided with circularly distributed hooks and axial protrusions in sequence from the open end to the closed end; The annular guide hinge plate is located between the clasp and the axially protruding end.

7. An electric water heater, characterized in that: It comprises a housing, an inner tank, an electric heating tube, a temperature sensor, a bracket, an indicator light and a digital display rotary control device as claimed in any one of claims 1 to 6. The shell is provided with a shell power data line hole and a shell connection hole; the closed end of the cylindrical part of the base is provided with a seat connection hole; The bracket is provided with holes for power and data cables and screw holes; The annular seat is fitted with the shell, and the screws pass through the seat connecting hole and the shell connecting hole and are screwed together with the screw holes; the indicator light is arranged on the upper part of the bracket and is fitted with the lamp hole on the shell.

8. The electric water heater according to claim 7, characterized in that: The housing is provided with a front-opening accommodating cavity, and the bottom plate of the accommodating cavity is provided with the housing power and data line hole and the housing connection hole; There is a distance between the annular seat and the closed end of the cylindrical body, and the annular seat is hollow with a rear opening; The barrel portion is inserted into the accommodating cavity.

9. The electric water heater according to claim 8, characterized in that: The bracket is made of plastic material and is provided with a locking rod, which includes a rod body, a locking head and an air-avoiding groove; A locking hole is provided on the bottom plate of the accommodating cavity; The locking head is locked with the bottom plate of the accommodating cavity, and the rod body is located in the locking hole.

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