CN107581997B - Dry burning preventing device of dish washer - Google Patents
Dry burning preventing device of dish washer Download PDFInfo
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- CN107581997B CN107581997B CN201610533263.8A CN201610533263A CN107581997B CN 107581997 B CN107581997 B CN 107581997B CN 201610533263 A CN201610533263 A CN 201610533263A CN 107581997 B CN107581997 B CN 107581997B
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- 230000005484 gravity Effects 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims description 94
- 230000006698 induction Effects 0.000 claims description 83
- 238000005485 electric heating Methods 0.000 claims description 41
- 238000010438 heat treatment Methods 0.000 claims description 25
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000009841 combustion method Methods 0.000 claims description 3
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- 230000005611 electricity Effects 0.000 claims description 2
- 230000001939 inductive effect Effects 0.000 abstract description 15
- 235000014676 Phragmites communis Nutrition 0.000 description 32
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- 230000001502 supplementing effect Effects 0.000 description 6
- 230000003068 static effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000004851 dishwashing Methods 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
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- 238000009835 boiling Methods 0.000 description 1
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- 238000011010 flushing procedure Methods 0.000 description 1
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- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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Abstract
The invention belongs to the field of dish washers, and particularly relates to a dry-burning prevention device of a dish washer, wherein the dish washer comprises a water pump and a waterway pipeline communicated with the water pump, the dry-burning prevention device comprises a sensing device and a sensed piece, the sensed piece is arranged in the water pump and/or the waterway pipeline, and the sensing device is arranged outside the water pump and/or the waterway pipeline corresponding to the sensed piece; the inductive piece can move along with water flow, when the water pump or the waterway pipeline is fully loaded, the inductive piece moves along with water flow to the inductive range of the inductive device, when the water pump or the waterway pipeline is insufficient or no water flow, the inductive piece is positioned outside the inductive range of the inductive device under the action of self gravity or a resetting device, and the inductive device and the inductive piece are arranged in the water pump and/or the waterway pipeline.
Description
Technical Field
The invention belongs to the field of dish washers, and particularly relates to a dry burning prevention device of a dish washer.
Background
In the working process of the dish-washing machine, water needs to be heated, circulating water in a waterway needs to be guaranteed to pass through before the heater works, so that dry burning of the heater is avoided, if the heater in the dish-washing machine is dry-burned, peripheral components can be possibly ignited to cause fire, and therefore, serious potential safety hazards exist in the dry burning of the heater. The most commonly used treatment methods at present are:
1) A water level switch or a water level sensor is added in the dish washer system, and a control board outputs a connection signal to a heater after detecting that the water level switch or the sensor is closed. The dishwasher using the water level switch can also connect the water level switch in series with the heater, and the heater can be turned on only after the water level switch is closed.
2) The dishwasher equipped with the DC motor detects whether the motor is empty or full of water by detecting the input current of the motor, and only when the control panel detects the full state of the motor, the control panel outputs a signal to the heater.
The existing method cannot ensure that water in a waterway is in a flowing state when the heater works, cannot ensure that water flow in a pipeline is in a full-load state or not, cannot ensure that liquid flowing through the heater does not act when the water and the steam are mixed, and has hidden troubles of local dry heating and water boiling of the heater.
The present invention has been made in view of this.
Disclosure of Invention
The invention aims to solve the technical problems of overcoming the defects of the prior art and providing a heater which does not heat when liquid in a waterway around the heater is static or water flowing in the waterway is in a water-vapor mixing state; when the water flow in the waterway is in a flowing state and is in a full-load state, the heater heats, and the dry burning preventing device of the dish washer effectively prevents the heater of the dish washer from dry burning.
In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that:
The dry heating preventing device comprises a water pump and a waterway pipeline communicated with the water pump, wherein the dry heating preventing device comprises a sensing device and a sensed piece, the sensed piece is arranged in the water pump and/or the waterway pipeline, and the sensing device is arranged outside the water pump and/or the waterway pipeline corresponding to the sensed piece; the inductive piece can move along with water flow, when the water pump or the waterway pipeline is fully loaded with water flow, the inductive piece moves into the induction range of the induction device along with water flow, and when the water pump or the waterway pipeline is insufficient or no water flow, the inductive piece is outside the induction range of the induction device under the action of self gravity or the reset device.
By arranging the sensing device and the sensed piece in the water pump and/or the waterway pipeline, the sensed piece can move along with water flow to the sensing range of the sensing device only under the condition that the water flow in the water pump or the waterway pipeline is full, and the power-on loop of the sensing device is closed; the water flowing through the water paths is in a water-vapor mixing state, the sensed piece cannot move along with the water flow to the sensing range of the sensing device, and the loop where the sensing device is positioned is not closed, so that the structure can judge whether the water pump and the water in the pipeline are full-load or not, and the water flow is full-load, so that a good dish washing effect is achieved; meanwhile, an electric heating device or an indicating device can be arranged in a loop of the induction device, so that after the induction device senses the sensed piece, the loop of the induction device is closed, and the electric heating device heats or the indicating device indicates.
The water pump is characterized by further comprising a detection pipeline arranged in the pump shell and/or the waterway pipeline, the sensed piece is arranged in the detection pipeline, two ends of the detection pipeline are respectively communicated with the water inlet and the water outlet of the water pump, and/or two ends of the detection pipeline are respectively communicated with the water inlet and the water outlet of the waterway pipeline.
Through setting up the detection pipeline, will be responded to the piece and restrict in the detection pipeline, prevent that pump case or waterway pipeline space from being too big, by the piece to take place the skew, and lead to the false detection of induction system, through setting up the position of detection pipeline and water inlet, delivery port simultaneously, can control whether rivers can get into the detection pipeline, only under the water pump or waterway pipeline in the water stream full load condition, rivers can get into the detection pipeline and drive by the piece to move to the induction range of induction system along the detection pipeline, make the switch-on circuit that induction system is located closed; the water flowing through the water paths is in a water-steam mixing state, and the water flow cannot enter the detection pipeline or can not drive the sensed piece to move into the sensing range of the sensing device along the detection pipeline, so that the power-on loop where the sensing device is located is still in a disconnected state.
And the pump shell and/or the waterway pipeline are/is inserted with a baffle plate, the baffle plate and the inner wall of the pump shell enclose a detection pipeline, and/or the baffle plate and the inner wall of the waterway pipeline enclose a detection pipeline.
Through inserting the baffle in pump case and/or water route pipeline, the baffle encloses into detection pipeline with the pump case inner wall and/or baffle and water route pipeline inner wall and encloses into detection pipeline, and this detection pipeline section is spindle-shaped, in order to guarantee to be responded to the piece and move smoothly in the detection pipeline, generally set up to spherically, consequently by the response piece in detection pipeline motion any place can't block the detection pipeline, guarantees to detect the rivers smooth passing through in the pipeline, and the design is more reasonable.
The device comprises a sensing device, a detecting pipeline, a limiting device and a sensing device, wherein the sensing device is used for sensing the water flow of the sensing device, and the sensing device is used for sensing the water flow of the sensing device;
Preferably, the limiting device is a limiting baffle, an opening for water flow to pass through is formed in the limiting baffle, and after the sensed piece is contacted with the limiting baffle, the water flow flows through the opening.
Because the pressure of the full water flow in the pump shell and/or the waterway pipeline is excessive, the sensed part can possibly be flushed out of the detection pipeline, so that the sensing device cannot sense the sensed part, misjudgment is generated, and the sensed part is blocked to stop after moving to the limiting device by arranging the limiting device, and the limiting device is positioned in the sensing range of the sensing device, so that the detection accuracy is improved; the limiting baffle is provided with an opening, so that after the sensed piece is contacted with the limiting device, water flow can be converged into a water way of the water pump or the water way pipeline through the opening, the smoothness of water flow in the detection pipeline is ensured, and the water outflow speed is improved.
The induction device is a magnetic induction device, and the induction piece is a magnetic body; or the sensing device is a pressure sensing device, and the sensed piece is a water pump or water flow in a waterway pipeline; or the sensing device is an infrared sensing device, and the sensed piece is a light blocking body.
The dish washer still includes electric heater unit, electric heater unit's heating pipe set up in water pump and/or the water route pipeline, electric heater unit with induction system electricity is connected, induction system triggers electric heater unit after sensing by the induction spare and heats.
The electric heating device is electrically connected with the induction device, and when the water pump and/or the waterway pipeline is full of water, the sensed piece moves along with the water flow into the sensing range of the induction device, an electrified loop where the induction device is positioned is closed, the electric heating device is positioned in a closed loop of the induction device, and the loop closure triggers the electric heating device to act so as to heat; when water flowing through the water paths of the dish washer is in a water-steam mixing state, the sensed piece cannot move to the sensing range of the sensing device along with water flow, the loop where the sensing device is located is still open, and the electric heating device does not act.
The control device is arranged outside the water pump and/or the waterway pipeline, the sensing device is connected with the control device, the control device is electrically connected with the electric heating device, and the control device receives the signal of the sensed piece sensed by the sensing device and then controls the electric heating device to heat;
Preferably, the control device is a relay or a control board.
The induction device is connected with the electric heating device through the control device, so that the control is more convenient and intelligent, when the control device is a relay, the induction device is connected with the electric heating device through the relay, the induction device senses a sensed piece, and after a loop of the induction device is closed, the relay acts to further conduct the loop of the electric heating device, and the electric heating device heats; the induction device does not sense the sensed piece, and the loop where the induction device is positioned is open, so that the electric heating device does not heat; when the control device is a control board, an electric signal of the induction device is transmitted into the control board, and the control board controls the electric heating device to heat; when the sensing device does not sense the sensed piece, no signal is transmitted into the control panel, and the electric heater does not act.
The water pump comprises a round pump shell, the sensing device is arranged at the top of the outer wall of the pump shell, the sensed part is arranged at the bottom of the shell, when water in the water pump is fully loaded, the sensed part moves along with the water flow along the curved surface of the pump shell from the bottom to the sensing range of the sensing device at the top, and when the water flow in the water pump is insufficient or no water flow, the sensed part resets to the bottom of the pump shell under the action of self gravity.
The dry heating preventing device is arranged on the pump shell, and because the volume of the pump shell is relatively large, the sensed part is arranged at the bottom of the pump shell, and only when water is fully loaded, the sensed part reaches the sensing range of the sensing device at the top of the water pump from the bottom of the water pump, the power-on loop of the sensing device is closed, the electric heating device is triggered to heat, and the water in the pump is detected to be in a full-load state; when the water flow in the water pump is insufficient or no water flow exists, the sensed part cannot reach the top of the pump shell, the sensing device cannot detect the sensed part, the power-on loop where the sensing device is positioned is open, the electric heating device does not heat, whether the water in the pump shell is full or not can be detected through the device, and the dry burning of the dish washer can be effectively prevented; the dry combustion preventing device is arranged on the pump shell, has strong operability, and has larger space in the pump shell, thereby being convenient for the electric heating device to be arranged in the pump shell.
The detection pipeline is formed by enclosing a baffle plate and the cambered surface of the pump shell, the detection pipeline extends from bottom to top along the curved wall of the pump shell, and the induced piece is arranged at the bottom of the detection pipeline.
Unsuitable setting resetting means in the pump case can influence the water pump performance, extends from the end and upward through setting up the measuring pipeline into along pump case curved wall, makes the delivery port setting of measuring pipeline in the upper end of water inlet, relies on by inducting spare self gravity, will be reset by inducting the spare, and the structure is more reasonable, and this measuring pipeline is for setting up according to the rivers direction, does not have the dead angle, also can not influence water pump self performance, can also satisfy and detect and prevent the dry combustion method requirement, and the structure is more reasonable.
The device comprises a detection pipeline, a reset device, a sensing device and a sensing device, wherein the sensing device is arranged on the outer wall of the waterway pipeline and is positioned at the downstream position of the sensing device;
preferably, the reset device is an extension spring or a compression spring.
According to the characteristics of the waterway pipeline, by arranging the resetting device, when the water flow in the waterway pipeline is insufficient or no water flow exists, the sensed piece is positioned outside the sensing range of the sensing device under the action of the resetting device; when the water channel pipeline is fully loaded with water, the sensed piece moves to the sensing range of the sensing device along with the water flow, and the structure is more suitable for the water channel pipeline arranged horizontally to be provided with the dry heating preventing device, so that the structure is simple and the design is more reasonable.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects: by arranging the sensing device and the sensed piece in the water pump and/or the waterway pipeline, the sensed piece can move along with water flow to the sensing range of the sensing device only under the condition that the water flow in the water pump or the waterway pipeline is full, and the power-on loop of the sensing device is closed; the water flowing through the water paths or the water with little water in the dish washer is in a water-steam mixing state, the sensed piece cannot move along with the water flow to the sensing range of the sensing device, the loop where the sensing device is positioned is not closed, and the structure can judge whether the water in the water pump and the pipeline is full or not; through setting up the detection pipeline, will be responded to the piece and restrict in the detection pipeline, prevent that pump case or waterway pipeline space from being too big, by the piece to take place the skew, and lead to the false detection of induction system, through setting up the position of detection pipeline and water inlet, delivery port simultaneously, can control whether rivers can get into the detection pipeline, only under the water pump or waterway pipeline water flow full load's circumstances, rivers can get into the detection pipeline and drive by the piece to move to the induction range of induction system along the detection pipeline, make the switch-on circuit that induction system is located closed; the water flowing through the water paths is in a water-steam mixing state, and the water flows can not enter the detection pipeline or drive the sensed piece to move into the sensing range of the sensing device along the detection pipeline, so that the power-on loop of the sensing device is still in a disconnected state; the partition board is inserted into the pump shell and/or the waterway pipeline, the partition board and the inner wall of the pump shell enclose a detection pipeline, and/or the partition board and the inner wall of the waterway pipeline enclose a detection pipeline, the section of the detection pipeline is spindle-shaped, and the detection pipeline is generally spherical in order to ensure that the sensed piece moves smoothly in the detection pipeline, so that the sensed piece cannot block the detection pipeline when moving anywhere in the detection pipeline, and the design is more reasonable; because the pressure of the full water flow in the pump shell and/or the waterway pipeline is excessive, the sensed part can possibly be flushed out of the detection pipeline, so that the sensing device cannot sense the sensed part, misjudgment is generated, and the sensed part is blocked to stop after moving to the limiting device by arranging the limiting device, and the limiting device is positioned in the sensing range of the sensing device, so that the detection accuracy is improved; an opening is formed in the limiting baffle plate, so that the water outflow speed is improved; the electric heating device is electrically connected with the induction device, and when the water pump and/or the waterway pipeline is full of water, the sensed piece moves along with the water flow into the sensing range of the induction device, an electrified loop where the induction device is positioned is closed, the electric heating device is positioned in a closed loop of the induction device, and the loop closure triggers the electric heating device to act so as to heat; when water flowing in the water path or the water with little water in the dish washer is in a water-vapor mixing state, the sensed piece cannot move along with water flow to the sensing range of the sensing device, the loop where the sensing device is positioned is still open, and the electric heating device does not act, so that the device effectively prevents dry heating caused by the water flowing in the water path or the water with little water in the dish washer, reduces the possibility of damaging the dish washer and even igniting surrounding objects, is safer and more reasonable, and reduces potential safety hazards; the induction device is connected with the electric heating device through the control device, so that the control is more convenient and intelligent, when the control device is a relay, the induction device is connected with the electric heating device through the relay, and after a loop of the induction device is closed, the relay acts to further conduct the loop of the electric heating device, and the electric heating device heats; the loop where the induction device is positioned is an open circuit, so that the electric heating device does not heat; when the control device is a control board, an electric signal of the induction device is transmitted into the control board, and the control board controls the electric heating device to heat; when the induction device does not sense the sensed piece, no signal is transmitted, and the electric heater does not act; the device is arranged on the pump shell through adding the dry combustion method prevention device, because the volume of the pump shell is relatively large and the device is relatively suitable, the sensed part is arranged at the bottom of the pump shell, and only when water is fully loaded, the sensing hardware reaches the sensing range of the sensing device at the top of the water pump from the bottom of the water pump, the power-on loop of the sensing device is closed, the electric heating device is triggered to heat, and the water in the pump is detected to be in a full-load state; when the water flow in the water pump is insufficient or no water flow exists, the sensed part cannot reach the top of the pump shell, the sensing device cannot detect the sensed part, the power-on loop where the sensing device is positioned is open, the electric heating device does not heat, whether the water in the pump shell is full or not can be detected through the device, and the dry burning of the dish washer can be effectively prevented; the dry combustion preventing device is arranged on the pump shell, has strong operability, and has larger space in the pump shell, thereby being convenient for the electric heating device to be arranged in the pump shell.
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:
FIG. 1 is a schematic view of the external structure of a water pump of a dishwasher according to the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1 of the present invention;
FIG. 3 is a schematic view of an anti-dry heating device with a detection pipe in a dishwasher water pump according to the present invention;
FIG. 4 is a schematic diagram of a water pump dry-fire preventing device of a dishwasher according to the present invention;
FIG. 5 is a schematic view of a water pump belt control device for a dishwasher according to the present invention;
FIG. 6 is a schematic view of the waterway pipeline structure of the dishwasher of the present invention;
FIG. 7 is a schematic view of a waterway pipeline structure of a dishwasher having a control device according to the present invention;
FIG. 8 is a circuit diagram of the connection of the induction device and the electric heating device of the dishwasher of the present invention;
FIG. 9 is a circuit diagram of the connection of the induction device and the electric heating device of the dishwasher of the present invention through a control board;
FIG. 10 is a circuit diagram of a connection of a dishwasher induction device and an electric heating device through a relay according to the present invention;
FIG. 11 is a schematic view of the structure of the bar-shaped limit stop of the present invention at the water outlet of the inspection pipe.
In the figure: 100. pump case 101, water pump inlet 102, water pump outlet 201, reed switch 202, magnetic ball 203, indicator lamp 204, electric heater 205, heating pipe 206, detection pipe 207, baffle 208, water inlet 209 of detection pipe, detection pipe water outlet 210, limit baffle 211, control device 300, waterway pipe 301, and spring.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
The dry heating preventing device comprises a water pump and a waterway pipeline communicated with the water pump, wherein the dry heating preventing device comprises a sensing device and a sensed piece, the sensed piece is arranged in the water pump and/or the waterway pipeline, and the sensing device is arranged outside the water pump and/or the waterway pipeline corresponding to the sensed piece; the inductive piece can move along with water flow, when the water pump or the waterway pipeline is fully loaded with water flow, the inductive piece moves into the induction range of the induction device along with water flow, and when the water pump or the waterway pipeline is insufficient or no water flow, the inductive piece is outside the induction range of the induction device under the action of self gravity or the reset device.
Embodiment one:
As shown in fig. 1-2, a dry burning prevention device of a dishwasher is arranged in a water pump of the dishwasher, a pump shell 100 of the water pump is circular, a water pump inlet 101 is positioned on the side surface of an arc-shaped pump shell 100 of the water pump, a water pump outlet 102 is arranged at the top end of the pump shell 100 and along the tangential direction of the circular pump shell 100, the dry burning prevention device comprises a magnetic induction device, a magnetic ball 202 and a display device, the magnetic induction device is a reed switch 201, the display device is an indicator 203, the reed switch 201 is arranged at the top of the arc-shaped outer wall of the pump shell 100, the magnetic ball 202 is positioned at the bottom of the pump shell 100 of the water pump in a non-working state of the water pump, and the reed switch 201 is connected with the indicator 203 in series.
Wherein the magnetic induction means may also be a proximity switch.
Detecting whether water in the water pump is full and preventing dry combustion process: after the water pump is started, if the water in the water pump is in a full-load state, the water flow in the water pump moves around the circular pump shell 100 from bottom to top, the magnetic ball 202 moves along the curved inner wall of the pump shell 100 from bottom to the induction area of the top reed pipe 201 along with the water flow, after the reed pipe 201 detects the magnetic ball 202, the loop where the reed pipe 201 and the indicator lamp 203 are positioned is closed, the indicator lamp 203 is on, and the electric heating device of the dish washer is manually started; if the water flow in the water pump is static, the water quantity is insufficient or the water flowing in the waterway is in a water-vapor mixing state, after the water pump is started, the magnetic ball 202 cannot reach the induction area of the reed pipe 201 at the top end of the pump shell 100 under the action of self gravity, the reed pipe 201 cannot induce the magnetic ball 202, the loop where the reed pipe 201 and the indicator lamp 203 are positioned is open, the indicator lamp 203 is not on, the electric heating device is not started, the water supplementing device is started manually, water is supplemented for the dish washer, and dry burning of the dish washer is prevented.
Embodiment two:
As shown in fig. 3-4 and 8, the dry burning prevention device of the dish washer is arranged in a water pump of the dish washer, a pump shell 100 of the water pump is circular, a water pump inlet 101 is positioned on a radial surface of an arc-shaped pump shell 100 of the water pump, a water pump outlet 102 is arranged at the top end of the pump shell 100 and along the tangential direction of the circular pump shell 100, the dry burning prevention device comprises an induction device, an inducted part, a detection pipeline 206 and an electric heating device, the electric heating device is an electric heater 204, the induction device is a magnetic induction device, the magnetic induction device is a reed pipe 201, the reed pipe 201 is arranged at the top of the arc-shaped outer wall of the pump shell 100, the reed pipe 201 is connected with the electric heater 204 in series, the inducted part is a magnetic ball 202, the electric heating device is arranged at the inlet 101 end of the water pump, the heating pipe 205 of the heater is coiled around the inner wall of the circular pump shell 100 of the water pump, the detection pipeline 206 is surrounded by the partition 207 inserted into the pump shell 100 and the inner wall of the pump shell 100, the water inlet and the water outlet of the detection pipeline 206 are communicated with the water inlet and the water outlet of the water pump, the magnetic ball 202 is arranged in the detection pipeline 206, the water inlet of the detection pipeline 206 is positioned at the bottom of the pump shell 100, the water outlet 209 of the detection pipeline is positioned at the top of the pump shell 100, the axial direction of the water outlet 209 of the detection pipeline is parallel to the axial direction of the water outlet 102 of the water pump, the detection pipeline 206 extends from bottom to top along the curved wall of the pump shell 100, and when the water pump is closed, the magnetic ball 202 is positioned at the bottom of the detection pipeline 206.
The sensing device can also be a pressure sensing device, and the sensed piece is a water pump or water flow in a waterway pipeline; or the sensing device is an infrared sensing device, and the sensed piece is a light blocking body; the diameter of the detection pipeline 206 is elliptical or spindle-shaped, the magnetic ball 202 is circular, and the magnetic ball 202 can move along with water flow in the detection pipeline 206.
Dry burning prevention process: after the water pump is started, if water in the water pump is in a full-load state, water in the water pump moves around the pump shell 100 from bottom to top, a water inlet and a water outlet of the detection pipeline 206 are communicated with the water inlet and the water outlet of the water pump, water in the detection pipeline 206 also flows along the detection pipeline 206 from bottom to top, the magnetic ball 202 moves to an induction area of the top reed pipe 201 along with the water flow in the detection pipeline 206, after the reed pipe 201 detects the magnetic ball 202, a loop where the reed pipe 201 and the electric heater 204 are located is closed, the electric heater 204 acts to heat the water flow in the water pump, and the water in a dish washer is heated along with the water pump to transport the water; if the water in the water pump is static, the water quantity is insufficient or the water flowing in the waterway is in a water-steam mixed state, after the water pump is started, the magnetic ball 202 cannot move upwards along with the water flow under the action of self gravity, cannot reach the top end of the pump shell 100, the reed switch 201 cannot sense the magnetic ball 202, the loop where the magnetic induction device and the electric heater 204 are positioned is not closed, the electric heater 204 is not started, the water supplementing device is manually started, water is supplemented for the dish washer, and dry burning of the dish washer is prevented.
The water supplementing device can also be controlled to be opened by the control panel.
Embodiment III:
As shown in fig. 5 and 11, the difference between the present embodiment and the second embodiment is that the present embodiment further includes a limiting device, where the limiting device is fixedly disposed in the detection pipeline 206 and is within the induction range of the magnetic induction device, and the limiting device is used to limit the magnetic ball 202, so that the magnetic ball 202 moves along with the water flow to the limiting device to stop, and prevent the magnetic ball 202 from being flushed out due to excessive water flow pressure, the limiting device is a bar-shaped limiting baffle 210, and the bar-shaped limiting baffle 210 is vertically disposed and welded at the outlet of the detection pipeline 206 to block the magnetic ball 202 from being flushed out.
Wherein, stop device can be circular limit baffle 210, limit baffle 210's edge and the inner wall fixed connection of detecting pipeline 206, circular limit baffle 210 is equipped with the water hole all around, and magnetic ball 202 is blocked the back by limit baffle 210, in rivers Kong Huiru water pump, this structure is complicated, but spacing effect is better.
Embodiment four:
As shown in fig. 5 and 9, the difference between the present embodiment and the third embodiment is that the present embodiment further includes a control device 211, the control device 211 is a control board, the control board is disposed on the pump housing 100, if the water flow is full, the electromagnetic induction device senses the sensed member, the magnetic induction device transmits an electric signal to the control board, the control board receives the signal and then controls the electric heater 204 to heat, and if the water flow is not full, the control device controls the water replenishing device to replenish water to the dishwasher.
The control device 211 may be a relay.
Fifth embodiment:
As shown in fig. 6, a dry heating preventing device of a dishwasher is disposed in a waterway pipe 300, and comprises a sensing device, a sensed member, a reset device, a detecting pipe 206 and an electric heating device, wherein the sensing device is a magnetic induction device, the magnetic induction device is a reed pipe 201, the sensed member is a magnetic ball 202, the detecting pipe 206 is a pipe with a spindle-shaped radial section formed by a partition 207 inserted into the waterway pipe 300 and the inner wall of the waterway pipe 300, a water inlet 208 and a water outlet 209 of the detecting pipe are both communicated with the waterway pipe 300, the detecting pipe 206 is disposed at the top of the waterway pipe 300 which is horizontally disposed, only when water in the waterway pipe 300 is in a full-load state, water in the waterway pipe 300 enters the detecting pipe 206, and water in the waterway pipe 300 is divided into two parts with the same flow direction by the partition 207, the magnetic ball 202 is arranged in the detection pipeline 206, the reset device is a spring 301 arranged in the detection pipeline 206, one end of the spring 301 is fixed at the water inlet 208 end of the detection pipeline, the other end of the spring 301 is positioned in the detection pipeline 206 and fixedly connected with the magnetic ball 202, the reed pipe 201 is arranged on the outer wall of the waterway pipeline 300 and positioned at the downstream position of the magnetic ball 202, when the waterway pipeline 300 is fully loaded with water, the magnetic ball 202 moves to the induction range of the magnetic induction device along the detection pipeline 206 along with the water flow, when the water flow in the waterway pipeline 300 is insufficient or no water flow, the induced piece is positioned outside the induction range of the reed pipe 201 under the action of the tension force of the spring 301, the electric heater 204 is an electric heater 204, the electric heater 204 is arranged at the outlet end of the waterway pipeline 300, and the heating pipe 205 of the electric heater 204 is coiled on the inner wall of the electric heater.
One end of the spring 301 may be fixed at the water outlet 209 end of the detection pipeline, the other end of the spring 301 is located in the detection pipeline 206 and is fixedly connected with the magnetic ball 202, the reed pipe 201 is disposed on the outer wall of the waterway pipeline 300 and is located at the downstream position of the magnetic ball 202, when the waterway pipeline 300 is fully loaded with water flow, the magnetic ball 202 moves along the detection pipeline 206 to the sensing range of the reed pipe 201 along with the water flow, and when the waterway pipeline 300 is not fully loaded with water flow or is free of water flow, the sensed piece is located outside the sensing range of the sensing device under the action of the elastic force of the spring 301; the sensing device can also be a pressure sensing device, and the sensed piece is the water flow in the waterway pipeline 300; or the sensing device is an infrared sensing device, and the sensed piece is a light blocking body; the diameter of the detection pipeline 206 is elliptical or fusiform, the magnetic ball 202 is circular or elliptical, and the magnetic ball 202 can move along with water flow in the detection pipeline 206.
Dry burning prevention process: after the water pump is started, if the water in the waterway pipeline 300 is in a full-load state, the water inlet and the water outlet of the detection pipeline 206 are communicated with the water inlet and the water outlet of the waterway pipeline 300, the magnetic ball 202 moves to the induction area of the reed pipe 201 from the upstream along with the water flow in the detection pipeline 206, after the reed pipe 201 detects the magnetic ball 202, the loop where the reed pipe 201 and the electric heater 204 are positioned is closed, and the electric heater 204 acts to heat the water flow; if the water in the water pump is static in water flow, insufficient in water quantity or water flowing in the waterway is in a water-steam mixing state, after the water pump is started, the magnetic ball 202 cannot move downstream along with the water flow under the action of the elastic force of the spring 301, one end of the reed pipe 201 in the waterway pipeline 300 cannot be reached, the reed pipe 201 cannot sense the magnetic ball 202, the loop where the magnetic induction device and the electric heater 204 are located is not closed, the electric heater 204 is not started, the water supplementing device is manually started, water is supplemented for the dish washer, and dry burning of the dish washer is prevented.
Example six:
As shown in fig. 7, 10 and 11, this embodiment further includes a limiting device and a control device 211, where the limiting device is fixedly disposed in the detection pipeline 206 and is located in the sensing range of the sensing device, the limiting device is a bar-shaped limiting baffle 210, the limiting baffle 210 is welded in the detection pipeline 206 and is used for limiting the magnetic ball 202, the magnetic ball 202 moves to the limiting device along with the water flow, and does not drift continuously, so as to prevent the magnetic ball 202 from flushing out of the detection pipeline 206, affect the detection of the magnetic induction device, and the limiting device is disposed in the magnetic induction range of the magnetic induction device, so that the magnetic ball 202 moves furthest to the position and cannot move continuously, the control device 211 is a relay, and the sensing device is connected with the electric heater 204 through the relay.
The limiting device may also be a limiting baffle 210, water holes are formed around the limiting baffle 210, the limiting baffle 210 is welded with the detection pipeline 206, and water flows through the water holes after the magnetic ball 202 contacts with the limiting baffle 210; the control device 211 may be a control board.
Dry burning prevention process: after the water pump is started, if the water in the waterway pipeline 300 is in a full-load state, the water inlet and the water outlet of the detection pipeline 206 are communicated with the water inlet and the water outlet of the waterway pipeline 300, the magnetic ball 202 moves to the induction area of the reed pipe 201 from the upstream along with the water flow in the detection pipeline 206, after the reed pipe 201 detects the magnetic ball 202, the loop of the reed pipe 201 is closed, the loop of the relay for electric power generation heating is closed, the electric heater 204 acts to heat the water flow in the waterway pipeline, and the circulating water in the dish washer is heated along with the water transmission; if the water in the water pump is static in water flow, insufficient in water quantity or water flowing in the waterway is in a water-vapor mixing state, after the water pump is started, the magnetic ball 202 cannot move downstream along with the water flow under the action of the elastic force of the spring 301, one end of the reed switch 201 in the waterway pipeline 300 cannot be reached, the reed switch 201 cannot sense the magnetic ball 202, a loop where the magnetic induction device is located is open, the relay is not triggered, the electric heater 204 does not act, the water supplementing device is manually started, and the dishwasher is supplemented with water, so that dry burning of the dishwasher is prevented.
The water supplementing device can also be controlled to be opened by the control panel.
The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.
Claims (9)
1. The utility model provides a dry combustion method device is prevented to dish washer, dish washer include water pump and the waterway pipeline who communicates with it, its characterized in that:
The dry heating preventing device comprises an induction device and an induced piece, wherein the induced piece is arranged in the water pump and/or the waterway pipeline, and the induction device is arranged outside the water pump and/or the waterway pipeline corresponding to the induced piece; the sensed piece can move along with water flow, when the water pump or the waterway pipeline is full of water flow, the sensed piece moves along with the water flow into the sensing range of the sensing device, and when the water pump or the waterway pipeline is insufficient or no water flow, the sensed piece is out of the sensing range of the sensing device under the action of self gravity or a reset device;
the water pump is characterized by also comprising a detection pipeline, wherein two ends of the detection pipeline are respectively communicated with a water inlet and a water outlet of the water pump and/or the waterway pipeline;
the water pump or the waterway pipeline is internally inserted with a baffle plate, and the detection pipeline is formed by enclosing the baffle plate and the inner wall of the water pump and/or the baffle plate and the waterway pipeline;
The device comprises a sensing device, a detecting pipeline, a limiting device and a sensing device, wherein the sensing device is used for sensing the water flow of the sensing device, and the sensing device is used for sensing the water flow of the sensing device;
the limiting device is a limiting baffle, an opening for water flow to pass through is formed in the limiting baffle, and after the sensed piece is contacted with the limiting baffle, water flow flows through the opening.
2. The dry heating preventing apparatus of a dishwasher according to claim 1, wherein: the induction device is a magnetic induction device, and the induction piece is a magnetic body; or the sensing device is a pressure sensing device, and the sensed piece is a water pump or water flow in a waterway pipeline; or the sensing device is an infrared sensing device, and the sensed piece is a light blocking body.
3. The dry heating preventing apparatus of a dishwasher according to claim 2, wherein: the dish washer still includes electric heater unit, electric heater unit's heating pipe set up in water pump and/or the water route pipeline, electric heater unit with induction system electricity is connected, induction system triggers electric heater unit after sensing by the induction spare and heats.
4. A dry heating prevention apparatus of a dishwasher according to claim 3, wherein: the water pump is characterized by further comprising a control device, the control device is arranged outside the water pump and/or the waterway pipeline, the sensing device is connected with the control device, the control device is electrically connected with the electric heating device, and the control device receives the signal of the sensed piece sensed by the sensing device and then controls the electric heating device to heat.
5. The dry heating preventing apparatus of a dishwasher of claim 4, wherein,
The control device is a relay or a control board.
6. A dry heating prevention apparatus of a dish washer according to any one of claims 1-5, wherein: the water pump comprises a round pump shell, the sensing device is arranged at the top of the outer wall of the pump shell, the sensed part is arranged at the bottom of the pump shell, when water in the water pump is fully loaded, the sensed part moves along with the water flow along the curved surface of the pump shell from the bottom to the sensing range of the sensing device at the top, and when the water flow in the water pump is insufficient or no water flow, the sensed part resets to the bottom of the pump shell under the action of self gravity.
7. The dry heating preventing apparatus of a dishwasher according to claim 6, wherein: the detection pipeline is formed by enclosing a baffle plate and the cambered surface of the pump shell, the detection pipeline extends from bottom to top along the curved wall of the pump shell, and the induced piece is arranged at the bottom of the detection pipeline.
8. The dry heating preventing apparatus of a dishwasher of claim 7, wherein: the device comprises a water channel pipeline, a sensing piece, a reset device, a sensing device and a sensing device, wherein the sensing piece is arranged in the detection pipeline through the reset device, the sensing device is arranged on the outer wall of the water channel pipeline and is positioned at the downstream position of the sensing piece, when the water channel pipeline is full of water, the sensing piece moves to the sensing range of the sensing device along with the detection pipeline along with the water flow, and when the water flow in the water channel pipeline is insufficient or no water flow, the sensing piece is positioned outside the sensing range of the sensing device under the action of the reset device.
9. The dry heating preventing apparatus of a dishwasher according to claim 8, wherein:
the reset device is an extension spring or a compression spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610533263.8A CN107581997B (en) | 2016-07-07 | 2016-07-07 | Dry burning preventing device of dish washer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610533263.8A CN107581997B (en) | 2016-07-07 | 2016-07-07 | Dry burning preventing device of dish washer |
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| CN107581997A CN107581997A (en) | 2018-01-16 |
| CN107581997B true CN107581997B (en) | 2024-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610533263.8A Active CN107581997B (en) | 2016-07-07 | 2016-07-07 | Dry burning preventing device of dish washer |
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| CN (1) | CN107581997B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110388324B (en) * | 2018-04-23 | 2021-02-09 | 三花亚威科电器设备（芜湖）有限公司 | Pump and dish washer with same |
| CN108968861A (en) * | 2018-08-31 | 2018-12-11 | 杭州川月科技有限公司 | A kind of bowl washing method and dish-washing machine of dish-washing machine |
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| US4178957A (en) * | 1978-11-20 | 1979-12-18 | White Consolidated Industries, Inc. | Dishwasher fill system |
| SU1714190A1 (en) * | 1989-07-14 | 1992-02-23 | Восточный научно-исследовательский нефтегазовый институт по технике безопасности и промсанитарии | Pump |
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| CN107581997A (en) | 2018-01-16 |
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