CN210019228U

CN210019228U - Dish washing machine

Info

Publication number: CN210019228U
Application number: CN201920347980.0U
Authority: CN
Inventors: 周小波; 周桢翔
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-19
Filing date: 2019-03-19
Publication date: 2020-02-07
Anticipated expiration: 2029-03-19

Abstract

The utility model discloses a dish-washing machine, including the dish-washing machine body, the dish-washing machine body is including holding the chamber and setting up the apron on holding the chamber, and uncovered department that holds the chamber is equipped with the ladder groove, and the apron lid closes on holding the chamber and imbeds the ladder inslot, and the last top surface of apron is less than the uncovered edge plane that holds the chamber. After the cover plate is covered, a user can hardly open the cover plate, the dishwasher can be prevented from being mistakenly opened in the working state, and the high-temperature gas in the dishwasher is prevented from burning a human body.

Description

Dish washing machine

Technical Field

The utility model relates to a kitchen appliance field, concretely relates to dish washer.

Background

Along with the scientific and technological progress, more and more intelligent household electrical appliances get into people's life, for example, basin formula dish washer has brought many convenience for people's life, the apron of basin formula dish washer on the market at present flushes or outstanding in the dish washer upper surface with the dish washer upper surface usually, the user opens the apron very easily like this, cause the maloperation easily, especially children play and can open the apron by mistake, the inside high-temperature gas of dish washer can cause the infringement to the human body this moment, in addition, the heater of dish washer is through relay on-off control among the prior art, relay on-off is in case the trouble, probably cause the heater can't close, there is the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve among the prior art problem that the apron of dish washer is opened by the mistake easily and provide a dish washer, this dish washer can reduce the possibility that the apron was opened by the mistake, and the security performance is higher.

The utility model provides a technical scheme:

the utility model provides a dishwasher, includes the dishwasher body, the dishwasher body is including holding the chamber and setting up the apron on holding the chamber, the uncovered department that holds the chamber is equipped with the ladder groove, the apron lid closes hold on the chamber and imbed the ladder inslot, the last top surface of apron is less than hold the uncovered edge plane in chamber.

Further, the dishwasher further includes:

the top rod (3) is arranged on the dishwasher body and used for pushing the cover plate (2).

The detection module is configured on the wall of the accommodating cavity (1) of the dishwasher, and a detection signal of the detection module is sent to the controller;

and the controller sends a control instruction according to the detection signal, and the ejector rod pushes the cover plate (2) of the dishwasher open according to the control instruction.

Further, the dishwasher also comprises a door magnetic switch (4), wherein the door magnetic switch (4) is used for detecting the switch state of the cover plate (2) and sending a detection signal to the controller, and the controller controls the dishwasher to stop running according to the detection signal of the door magnetic switch (4).

Further, the dishwasher further comprises a driving unit, wherein the driving unit comprises a relay driving circuit connected with the controller, and the relay driving circuit is respectively connected with the power switch relay and the heater relay.

Furthermore, the dishwasher also comprises a driving unit, wherein the driving unit comprises a direct current motor driving circuit, the direct current motor driving circuit is connected with a motor of the ejector rod (3), and the direct current motor driving circuit drives the ejector rod (3) to stretch and retract through the motor of the ejector rod (3).

Further, the detection module includes:

the input end of the switch detection circuit is connected with the door magnetic switch (4), the output end of the switch detection circuit is connected with the controller, and the switch detection circuit sends a feedback signal of the door magnetic switch (4) to the controller;

the input end of the temperature detection circuit is connected with the thermistor, the output end of the temperature detection circuit is connected with the controller, and the temperature detection circuit sends a temperature detection signal to the controller.

Furthermore, the detection module further comprises a flow detection circuit, the input end of the flow detection circuit is connected with the flow sensor, the output end of the flow detection circuit is connected with the controller, and the flow detection circuit sends a flow detection signal to the controller.

Further, the switch detection circuit comprises a connector CN6 and a resistor R₇₁And a resistance R₇₂The pin a and the pin b of the connector CN6 are respectively connected with two terminal pins of the door magnetic switch (4), and simultaneously, the pin a of the connector CN6 passes through the resistor R₇₁The power supply is connected, and the pin a of the connector CN6 passes through the resistor R₇₂The controller is connected, the pin b of the connector CN6 is grounded, and the detection signal of the door magnetic switch (4) is output to the controller through the switch detection circuit.

Further, the temperature detection circuit comprises a connector CN5 and a resistor R₁₈And a resistance R₃₅The e pin and the f pin of the connector CN5 are respectively connected with two terminal pins of the thermistor, meanwhile, the f pin of the connector CN5 is connected with a power supply, and the e pin of the connector CN5 passes through the resistor R₁₈To ground, pin e of the connector CN5 also passes through the resistor R₃₅And the temperature detection circuit is connected with the controller and outputs a detection signal of the thermistor to the controller.

Further, the flow detection circuit comprises a connector CN2 and a resistorR₁And a resistance R₃The g pin, the h pin and the k pin of the connector CN2 are respectively connected with three end pins of the flow sensor, meanwhile, the g pin of the connector CN2 is connected with a power supply, and the resistor R₁Is connected with the g pin and the h pin of the connector CN2 respectively, and the h pin of the connector CN2 passes through the resistor R₃And the flow detection circuit is connected with the controller and outputs a detection signal of the flow sensor to the controller.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the cover plate of the utility model is embedded in the stepped groove, the upper top surface of the cover plate is lower than the open edge plane of the containing cavity, the cover plate is difficult to be opened by a user, the cover plate can be prevented from being opened by mistake in the working state of the dish-washing machine, and the high-temperature gas in the dish-washing machine is prevented from firing a human body;

2. after heating is finished, the controller can control the ejector rod to push the cover plate, the cover plate slightly protrudes out of the edge plane of the opening, the dish-washing machine can radiate heat in time, and a user can also have a certain warning effect when seeing that the dish-washing machine radiates high-temperature steam, so that the safety of the dish-washing machine is improved;

3. the utility model adopts the double control mode of the power switch relay and the heater relay to control, even if the heater relay is in failure, the main power supply can be controlled to be disconnected through the power switch relay, the heater is prevented from continuously heating, and the safety is higher;

4. the utility model discloses a dish washer is safer, because the utility model discloses a temperature detection circuit detects the temperature that holds the intracavity and transmits detection information for the controller, if the temperature surpasses 90 ℃, the controller can control the ejector pin and push open the apron and dispel the heat the cooling, even if like this power switch relay and heater relay all break down can not let the temperature that holds the intracavity continue to rise, avoid high-temperature gas to burn out electrical components and parts and even cause the conflagration from this, the security is higher;

5. the utility model discloses a flow detection circuit detects the inflow that holds the intracavity and gives the controller with detected signal transmission, and the controller has guaranteed to have sufficient water to wash dishes in the basin and can not overflow out the basin again simultaneously according to inflow control water intake time.

Drawings

FIG. 1 is an overall structure diagram of a dishwasher according to an embodiment of the present invention;

FIG. 2 is a schematic block diagram of a dishwasher control section according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a relay driving circuit according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a dc motor driving circuit according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a switch detection circuit according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a temperature detection circuit according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a flow detection circuit according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a power supply circuit provided by the present novel embodiment;

fig. 9 is a port wiring diagram of a controller according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Fig. 1 shows the overall structure diagram of the dishwasher of the embodiment, the dishwasher of the embodiment includes a dishwasher body, the dishwasher body includes a containing cavity 1 and a cover plate 2 arranged on the containing cavity 1, an opening of the containing cavity 1 is provided with a step groove, the cover plate 2 covers the containing cavity 1 and is embedded into the step groove, and the upper top surface of the cover plate 2 is lower than the open edge plane of the containing cavity 1.

After the cover plate is covered, a user can hardly open the cover plate, the dishwasher can be prevented from being mistakenly opened in the working state, and the high-temperature gas in the dishwasher is prevented from burning a human body.

In order to improve safety, the dishwasher of the present embodiment further includes:

ejector pin 3, ejector pin 3 sets up and is used for promoting apron 2 on the dish washer body.

The detection module is configured on the wall of the accommodating cavity 1 of the dish-washing machine, and a detection signal of the detection module is sent to the controller;

and the controller sends a control instruction according to the detection signal, and the ejector rod pushes the cover plate of the dish-washing machine open according to the control instruction.

Further, the dishwasher of the embodiment further comprises a driving unit, the driving unit comprises a direct current motor driving circuit, the direct current motor driving circuit is connected with a push rod motor, the direct current motor driving circuit drives the push rod 3 to stretch and retract through the push rod motor, the push rod 3 is preferably an electric push rod, and the electric push rod is JC35N3 in model number.

Specifically, as shown in fig. 2 and 4, the dc motor driving circuit includes a MOS transistor IC2, a resistor R₃₇And a connector CN12, the model adopted by the MOS tube IC2 is CEM6188, the model adopted by the connector CN12 is Header2, the P14 end of the singlechip is connected with the G2 pin of the MOS tube IC2, and the G2 pin of the MOS tube IC2 passes through a resistor R₃₇The pin S1 and the pin S2 of the MOS tube IC2 are grounded, the pin Y1 and the pin Y2 of the MOS tube IC2 are respectively connected with the pin B of the connector CN12, the pin A of the connector CN12 is connected with a 24V power supply, meanwhile, the pin A of the connector CN12 is connected with the positive electrode of the direct current motor, the pin B of the connector CN12 is connected with the negative electrode of the direct current motor, and the singlechip outputs a control signal to the MOS tube IC2 so as to control the direct current motor to rotate or stop; in order to prevent the DC motor from reversely rotating, the DC motor driving circuit also comprises a diode D₁Diode D₁The cathode of the diode is connected with the anode of the direct current motor, and the diode D₁The anode of the motor is connected with the cathode of the direct current motor.

Further, the detection module of the present embodiment includes:

switch detection circuit, door magnetic switch 4 is connected to switch detection circuit's input, controller is connected to switch detection circuit's output, switch detection circuit sends the feedback signal of door magnetic switch 4 to the controller, as shown in fig. 2 and 5, switch detection circuit includes connector CN6, resistance and resistance, two end pins of connecting door magnetic switch 4 are connected respectively to connector CN 6's a foot and b foot, simultaneously, connector CN 6's a foot is through the output of resistance connection power supply circuit, connector CN 6's a foot is through resistance connection controller, connector CN 6's b foot ground connection, through switch detection circuit with door magnetic switch 4's detected signal output for the controller.

The input end of the temperature detection circuit is connected with the thermistor, the output end of the temperature detection circuit is connected with the controller, and the temperature detection circuit sends a temperature detection signal to the controller. As shown in fig. 2 and 6, the temperature detection circuit includes a connector CN5, a resistor and a resistor, the e pin and the f pin of the connector CN5 are respectively connected to two terminal pins of the thermistor, meanwhile, the f pin of the connector CN5 is connected to the output terminal of the power circuit, the e pin of the connector CN5 is grounded via the resistor, the e pin of the connector CN5 is also connected to the controller via the resistor, and the detection signal of the thermistor is output to the controller via the temperature detection circuit.

The input end of the flow detection circuit is connected with the flow sensor, the output end of the flow detection circuit is connected with the controller, and the flow detection circuit sends a flow detection signal to the controller. As shown in fig. 2 and 7, the flow detection circuit includes a connector CN2, a resistor and a resistor, the g pin, the h pin and the k pin of the connector CN2 are respectively connected to three terminal pins of the flow sensor, meanwhile, the g pin of the connector CN2 is connected to an output terminal of the power circuit, two ends of the resistor are respectively connected to the g pin and the h pin of the connector, meanwhile, the h pin of the connector CN2 is connected to the controller via the resistor, and the flow detection circuit outputs a detection signal of the flow sensor to the controller.

On the one hand, after the heating is accomplished, the controller can control the ejector pin and promote the apron, let the apron slightly outstanding in uncovered edge plane, let the dish washer in time dispel the heat, see the dish washer also have certain warning effect when giving off high temperature vapor when the user, improve the security of dish washer, on the other hand, detection module can detect the temperature that holds the intracavity and give the controller with detecting information transmission, if the temperature exceedes 90 ℃ the time, the controller can control the ejector pin and push away the apron and dispel the heat the cooling, even if power switch relay and heater relay all break down like this also can not let the temperature that holds the intracavity and continuously rise, avoid high-temperature gas to burn and lose electrical components and parts and cause the conflagration from this even, the security.

Further, the dish washing machine of the embodiment further comprises a door magnetic switch 4, the door magnetic switch 4 is used for detecting the opening and closing state of the cover plate 2 and sending a detection signal to the controller, the controller controls the dish washing machine to stop running according to the detection signal of the door magnetic switch 4, even if the cover plate 2 is opened by mistake, the door magnetic switch 4 sends the detection signal to the controller, the controller controls the dish washing machine to stop running, electric shock can be prevented, meanwhile, the condition that the cover plate 2 is opened or not closed tightly can not be heated continuously is ensured, safety is improved, and energy consumption is reduced.

Further, the driving unit of the embodiment further includes a relay driving circuit connected to the controller, the relay driving circuit is connected to the power switch relay and the heater relay, respectively, and the relay driving circuit cuts off the power circuit of the heater through the power switch relay and/or the heater relay.

As shown IN fig. 3, the relay driving circuit is composed of a composite transistor array IC3 and a peripheral circuit thereof, the composite transistor array IC3 adopts ULN2003, pin IN3 of composite transistor array IC3 is connected with end P62 of the single chip microcomputer, pin IN4 of composite transistor array IC3 is connected with end PG1 of the single chip microcomputer, pin IN5 of composite transistor array IC3 is connected with end P17 of the single chip microcomputer and is used for receiving control signals output by the controller, pin OUT5 of composite transistor array IC3 is connected with pin C of coil of power switch relay KJ1, pin OUT3 of composite transistor array IC3 is connected with pin G of coil of heater relay KJ2 and is used for outputting control signals to power switch relay KJ1 and heater relay KJ2, thereby controlling start and stop of power switch relay KJ1 and heater relay KJ 2. This can improve safety because the power switch relay KJ1 can also effect the shut down of the heater if the heater relay KJ2 fails. The dish washer of this embodiment adopts the dual control mode of switch relay and heater relay to control, even if the heater relay trouble, also can be through the disconnection of switch relay control master power, prevents that the heater from continuously heating, and the security is higher.

In order to provide working power supply for each circuit, the utility model discloses configured power supply circuit, as shown in FIG. 8, this power supply circuit comprises the step-down circuit who uses the step-down chip as the main, and this step-down chip adopts the synchronous step-down stabiliser that the model is HX1304, and the voltage reduction that will input for 24V is output after 5V.

The utility model discloses a controller adopts the singlechip, and the model is MB95F636KPMC-G-SNE2, refers to FIG. 9, and the input linked switch detection circuitry of singlechip, temperature detection circuitry and flow detection circuit for receive the detected signal and give drive unit according to this signal send control signal.

Further, the utility model provides a controlling means still includes bee calling organ and bee calling organ drive circuit, and after the bowl was washed, bee calling organ drive circuit was given to controller output control signal, and bee calling organ drive circuit exports this control signal for bee calling organ after enlargiing to send the buzzing sound and remind the user to take out the bowl.

Further, the utility model provides a controlling means still includes the display operation screen, and this display operation screen connection director, after the user operates on the display operation screen, the controller carries out work according to this operation.

The working principle of the control device is as follows:

the utility model detects the state of the cover plate 2 through the door magnetic switch 4, and transmits the detected state to the controller through the switch detection circuit, when the door magnetic switch 4 detects that the cover plate 2 is opened, the controller controls the dishwasher to stop running; meanwhile, the utility model detects the temperature in the accommodating cavity 1 through the thermistor, and transmits the detected temperature signal to the controller through the temperature detection circuit, when the temperature in the accommodating cavity 1 is higher than 90 ℃, the controller outputs a control signal to the direct current motor driving circuit, so that the direct current motor drives the ejector rod 3 to work, thereby jacking the cover plate 2, and then the controller controls the main power supply to be disconnected; the utility model discloses a flow sensor detects and holds the interior inflow flow of chamber 1 to give the controller through flow detection circuit with detected signal transmission, the controller has guaranteed to have sufficient water to wash the dishes in the basin according to inflow flow control intake time, can not overflow out the basin again simultaneously, when holding the sufficient back that washes the dishes of chamber 1 water, heater drive circuit is given to controller output control signal, thereby drive heater work.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a dishwasher, includes the dishwasher body, the dishwasher body is including holding chamber (1) and setting up apron (2) on holding chamber (1), its characterized in that, the uncovered department that holds chamber (1) is equipped with the ladder groove, apron (2) lid closes hold chamber (1) and go up and imbed the ladder inslot, the last top surface of apron (2) is less than hold the uncovered edge plane in chamber (1).

2. The dishwasher of claim 1, further comprising:

the ejector rod (3) is arranged on the dishwasher body and used for pushing the cover plate (2);

3. The dishwasher of claim 2, further comprising a magnetic door switch (4), wherein the magnetic door switch (4) is used for detecting the switch state of the cover plate (2) and sending a detection signal to the controller, and the controller controls the dishwasher to stop running according to the detection signal of the magnetic door switch (4).

4. The dishwasher of claim 2, further comprising a driving unit including a relay driving circuit connected to the controller, the relay driving circuit being connected to the power switch relay and the heater relay, respectively.

5. The dishwasher of claim 2, further comprising a driving unit, wherein the driving unit comprises a DC motor driving circuit, the DC motor driving circuit is connected with the motor of the ram (3), and the DC motor driving circuit drives the ram (3) to extend and retract through the motor of the ram (3).

6. The dishwasher of claim 2, wherein the detection module comprises:

7. The dishwasher of claim 2 or 6, wherein the detection module further comprises a flow detection circuit, an input end of the flow detection circuit is connected with the flow sensor, an output end of the flow detection circuit is connected with the controller, and the flow detection circuit sends a flow detection signal to the controller.

8. The dishwasher of claim 6, wherein the switch detection circuit comprises connector CN6, resistor R₇₁And a resistance R₇₂Said is connected toThe pin a and the pin b of the connector CN6 are respectively connected with two terminal pins of the door magnetic switch (4), and simultaneously, the pin a of the connector CN6 passes through the resistor R₇₁The power supply is connected, and the pin a of the connector CN6 passes through the resistor R₇₂The controller is connected, the pin b of the connector CN6 is grounded, and the detection signal of the door magnetic switch (4) is output to the controller through the switch detection circuit.

9. The dishwasher of claim 6, wherein the temperature detection circuit comprises a connector CN5, a resistor R₁₈And a resistance R₃₅The e pin and the f pin of the connector CN5 are respectively connected with two terminal pins of the thermistor, meanwhile, the f pin of the connector CN5 is connected with a power supply, and the e pin of the connector CN5 passes through the resistor R₁₈To ground, pin e of the connector CN5 also passes through the resistor R₃₅And the temperature detection circuit is connected with the controller and outputs a detection signal of the thermistor to the controller.

10. The dishwasher of claim 7, wherein the flow detection circuit comprises a connector CN2, a resistor R₁And a resistance R₃The g pin, the h pin and the k pin of the connector CN2 are respectively connected with three end pins of the flow sensor, the g pin of the connector CN2 is connected with a power supply, and the resistor R is connected with the resistor R₁Is respectively connected with the g pin and the h pin of the connector CN2, the h pin of the connector CN2 passes through the resistor R₃And the flow detection circuit is connected with the controller and outputs a detection signal of the flow sensor to the controller.