CN112916475A

CN112916475A - Cleaning machine

Info

Publication number: CN112916475A
Application number: CN201911243895.0A
Authority: CN
Inventors: 乔勇; 王其彬; 段风伟; 朱考
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2021-06-08
Also published as: WO2021110140A1

Abstract

The invention provides a cleaning machine, comprising: the main machine comprises a motor and a pump body rotationally driven by the motor; the spray gun comprises a first flow channel for the circulation of cleaning liquid; the connecting piece is used for connecting the main machine and the spray gun and is provided with a second flow passage; the outlet end of the pump body is communicated with the first flow channel through a second flow channel; the spray gun is provided with a microswitch which is electrically connected with the motor and controls the start and stop of the motor, a battery pack combining part used for installing a battery pack and a control circuit board which is electrically connected with the battery pack combining part; the connecting piece also comprises a transmission line, and the control circuit board is electrically connected with the motor through the transmission line so as to control the motor; the number of transmission lines does not exceed 6 at most. The cleaning machine provided by the embodiment of the invention has the advantages that the circuit connection is simpler and the circuit layout is more reasonable on the premise of realizing smaller volume and better portability of the whole machine.

Description

Cleaning machine

Technical Field

The invention relates to a belt pressure cleaning device, in particular to a cleaning machine.

Background

As a cleaning apparatus capable of generating a high-pressure water flow to wash the surface of an object, a cleaning machine is widely used in various fields of work and life. The cleaning agent has good effect particularly in the cleaning process of outdoor courtyards, motor vehicle lanes, sidewalks and the like with concrete structural surfaces and hard surfaces of rails, fences, automobiles and the like.

In one known embodiment, the washer may be a stand-type washer, which is typically wound with a hose, which in use is connected to a tap or one end of the hose is inserted into a water supply. Therefore, the hose which needs to be wound on the cleaning machine is long, so that the cleaning machine is large in size and inconvenient to move, the cleaning range is limited, and the portability is poor.

In addition, in order to improve the spraying speed of the cleaning liquid and to adjust the spraying speed of the cleaning liquid, the cleaning machine is generally further equipped with a pump body for pressurizing the cleaning liquid, a motor for driving the pump body to operate, a control circuit board (PCB) for controlling the rotation speed of the motor to adjust the spraying speed/pressure of the cleaning liquid, a switch for controlling the start and stop of the motor, and the like. The arrangement of the above-mentioned components is not only related to the portability problem of the washing machine, but also to the rationality problem of the circuit layout.

Therefore, how to consider both the portability and the circuit layout of the cleaning machine is an urgent technical problem to be solved.

Disclosure of Invention

Based on the foregoing defects in the prior art, embodiments of the present invention provide a cleaning machine, which makes circuit connection simpler and circuit layout more reasonable on the premise of smaller overall size and better portability.

In order to achieve the above object, the present invention provides the following technical solutions.

A cleaning machine comprising:

the main machine comprises a motor and a pump body rotationally driven by the motor;

the spray gun comprises a first flow channel for the circulation of cleaning liquid;

the connecting piece is used for connecting the main machine and the spray gun and is provided with a second flow passage; the outlet end of the pump body is communicated with the first flow passage through the second flow passage;

the spray gun is provided with a microswitch which is electrically connected with the motor and controls the motor to be turned on and off, a battery pack combining part used for installing a battery pack and a control circuit board which is electrically connected with the battery pack combining part;

the connecting piece also comprises a transmission line, and the control circuit board is electrically connected with the motor through the transmission line so as to control the motor; the number of transmission lines does not exceed 6 at most.

Preferably, the microswitch generates an on-off signal when being triggered; the transmission line is at least used for transmitting an opening and closing signal so as to control the starting and the stopping of the motor.

Preferably, the cleaning machine further comprises a speed regulating element arranged on the spray gun and electrically connected with the control circuit board; the control circuit board generates and sends out a speed regulation signal when the speed regulation element is triggered; the transmission line is also used for transmitting the speed regulating signal so as to control the motor to regulate the speed.

Preferably, the microswitch is electrically connected with the control circuit board, and the start and stop signal is generated and sent by the control circuit board when the microswitch is triggered.

Preferably, the microswitch is arranged on the transmission line, and the start and stop signal is generated and sent out when the microswitch is triggered.

Preferably, the motor is a three-phase dc brushless motor, and the number of the transmission lines is 3, and the transmission lines are respectively connected to three phases of the three-phase dc brushless motor correspondingly; alternatively, the first and second electrodes may be,

the motor is a two-phase brushless DC motor, the number of the transmission lines is 2, and the transmission lines are respectively and correspondingly connected with two phases of the two-phase brushless DC motor; alternatively, the first and second electrodes may be,

the motor is a unidirectional direct current brush motor, the number of the transmission lines is 2, and the transmission lines are respectively and correspondingly connected with the positive pole and the negative pole of the unidirectional direct current brush motor.

Preferably, the transmission line comprises a first transmission line and a second transmission line, and the first transmission line is used for transmitting the speed regulation signal; the microswitch is arranged on the second transmission line, the start and stop signal is generated and sent out when the microswitch is triggered, and the second transmission line is used for transmitting the start and stop signal.

Preferably, the motor is a three-phase dc brushless motor, the first transmission lines and the second transmission lines are 3, 3 of the first transmission lines are respectively and correspondingly connected to three phases of the three-phase dc brushless motor, and 3 of the second transmission lines are also respectively and correspondingly connected to three phases of the three-phase dc brushless motor; alternatively, the first and second electrodes may be,

the motor is a two-phase brushless DC motor, the number of the first transmission lines and the number of the second transmission lines are 2, 2 of the first transmission lines are respectively and correspondingly connected with two phases of the two-phase brushless DC motor, and 2 of the second transmission lines are also respectively and correspondingly connected with two phases of the two-phase brushless DC motor; alternatively, the first and second electrodes may be,

the motor is a unidirectional direct current brush motor, the number of the first transmission lines is 2, the number of the second transmission lines is 1 or 2, the 2 first transmission lines are respectively and correspondingly connected with the positive pole and the negative pole of the unidirectional direct current brush motor, and the 1 or 2 second transmission lines are connected with the positive pole and/or the negative pole of the unidirectional direct current brush motor.

Preferably, the speed regulation element is electrically connected with the control circuit board through at least 3 lines, and the at least 3 lines comprise 1 positive power line, 1 negative power line and 1 speed regulation signal line.

Preferably, the speed regulating element is provided with a speed regulating display part, and the speed regulating display part is electrically connected with the control circuit board through a 4 th circuit.

Preferably, an electric quantity display element used for indicating the residual electric quantity of the battery pack is further arranged on the spray gun, the electric quantity display element is electrically connected with the control circuit board at least through 3 lines, and the 3 lines comprise 1 positive electrode power line, 1 negative electrode power line and 1 electric quantity signal line.

Preferably, when the battery pack coupling part is configured to mount a battery pack, the battery pack coupling part is electrically connected to the control circuit board through 3 lines, the 3 lines including 1 positive power supply line, 1 negative power supply line, and 1 temperature signal line.

Preferably, when the battery pack coupling part is configured to mount a dual battery pack, the battery pack coupling part is electrically connected to the control circuit board through 5 lines, the 5 lines including 1 positive power line, 1 negative power line, 1 middle phase line, and 2 temperature signal lines.

Preferably, the spray gun comprises a spray gun housing for receiving the first flow channel therein, the spray gun housing comprises a horizontal casing, a handle casing located at the rear end of the horizontal casing and extending downwards, and a transition casing connected with the horizontal casing and extending downwards, and the transition casing is located in front of the handle casing;

the first flow channel is at least provided with a liquid inlet which is positioned in the handle casing, and the battery pack combining part is arranged on the transition casing.

Preferably, the first flow passage comprises a horizontal section located in the horizontal housing, an inclined section connected to the horizontal section and located in the handle housing; the end opening that the slope section deviates from the horizontal segment forms the inlet, the horizontal segment deviates from the end opening of slope section forms the liquid outlet.

Preferably, the control circuit board is arranged in the horizontal casing and close to the battery pack combining part; the microswitch is arranged in the horizontal casing and is close to the control circuit board.

Preferably, the control circuit board is located on one side of the horizontal section, an electronic component is arranged on the control circuit board, the electronic component at least comprises a plurality of MOS tubes, the MOS tubes are arranged on the surface, facing the horizontal section, of the control circuit board, and the MOS tubes are arranged along the length direction of the horizontal section.

Preferably, the horizontal section comprises a cooling section, part of the side wall of the cooling section is a straight wall, the control circuit board is arranged on the straight wall, and a heat transfer element is arranged between the control circuit board and the straight wall.

Preferably, the control circuit board is arranged in the split charging box, the cooling section is connected with the split charging box, and the split charging box is fixed in the horizontal casing; the distribution box comprises a bottom wall connected with a straight wall of the cooling section, the straight wall is overlapped with the bottom wall, and the control circuit board is fixed on the bottom wall.

Preferably, the dispensing box further comprises a protrusion formed on an edge of the bottom wall, and the protrusion and the bottom wall define a receiving groove for receiving the control circuit board therein.

A cleaning machine comprising:

the spray gun is provided with a microswitch which is electrically connected with the motor and controls the start and stop of the motor, a battery pack combining part used for installing a battery pack and a control circuit board which is electrically connected with the battery pack combining part.

By providing the electronic parts to be connected to the control circuit board other than the motor on the spray gun, the wiring between the electronic parts provided on the spray gun and the control circuit board can be shortened. Whereas the longer connecting lines, i.e. transmission lines, are only present in the connecting piece connecting the main machine and the lance. And, through establishing the control scheme board also on the spray gun, compare with the prior art of establishing the control scheme board on the host computer, the quantity of the transmission line of connecting motor and control scheme board can very big reduction. Therefore, the circuit structure is simplified, and the wiring is more reasonable.

In addition, through the host computer that will contain the motor and the pump body and the structural design of spray gun disconnect-type to couple together through the connecting piece between the two, make the whole volume of cleaning machine less, it is comparatively convenient to use. During operation, an operator can carry out cleaning operation only by holding the spray gun, and the host can be placed or submerged in a water source or dragged to walk, so that the portability is better, and the cleaning range is greatly expanded.

Drawings

FIG. 1 is a schematic view of the overall structure of a cleaning machine according to an embodiment of the present invention;

FIG. 2 is an enlarged partial schematic view of a spray gun included in the cleaning machine of FIG. 1;

FIG. 3 is a circuit block topology of the washer shown in FIG. 1 or FIG. 2;

FIG. 4 is a cross-sectional view of section A1-A1 of FIG. 1;

FIG. 5 is a cross-sectional view of section A9-A9 of FIG. 2;

FIG. 6 is a layout of electronic components on a control circuit board;

fig. 7 is another arrangement of electronic components on a control board.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not a whole embodiment. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In this specification, the direction of the washing machine according to the embodiment of the present invention, which is directed toward or faces the work surface in the normal use state, is defined as "front", and the direction of the washing machine, which is directed toward or faces the holding user, is defined as "rear", in contrast to this. More specifically, the rightward direction illustrated in fig. 1 and 2 is defined as "front", and the leftward direction illustrated in fig. 1 and 2 is defined as "rear".

It should be noted that the definitions of the directions in the present specification are only for convenience of describing the technical solution of the present invention, and do not limit the directions of the cleaning machine of the embodiment of the present invention in other scenarios, including but not limited to use, test, transportation, and manufacturing, which may cause the orientation of the cleaning machine to be reversed or the position of the cleaning machine to be changed.

As shown in fig. 1 and 2, the cleaning machine according to the embodiment of the present invention mainly includes two main parts, i.e., a main body 1 and a spray gun 2. The two are connected through a connecting piece 3.

The main body 1 may include a main body case 101, a motor 102 provided in the main body case 101, and a pump body 103, and the pump body 103 is rotationally driven by the motor 102. The motor 102 and pump body 103 may be arranged up and down in the main body housing 101, with the motor 102 down and the pump body 103 up. Further, a speed reduction mechanism 104 (e.g., a planetary gear train) may be provided between the motor 102 and the pump body 103. The outlet end of the pump body 103 can be detachably connected with the connecting piece 3 in an inserting manner. To enhance the pressurization effect on the cleaning liquid, the pump body 103 may be a plunger pump. The lateral wall of host computer casing 101 can be equipped with the water inlet 105 with the entrance point intercommunication of the pump body 103, and is concrete, and water inlet 105 forms the lower extreme at host computer casing 101, and the lower extreme of host computer casing 101 is connected with supporting seat 106 with the detachable mode, is equipped with the filter screen between supporting seat 106 and the host computer casing 101 lower extreme, has the inlet opening 107 with water inlet 105 intercommunication on the supporting seat 106, and the water that flows in from inlet opening 107 is filtered the back through the filter screen, flows into water inlet 105.

The spray gun 2 can comprise a spray gun shell which can be formed by assembling a Harvard structure and comprises a horizontal shell 201 arranged approximately horizontally, a handle shell 202 which is arranged at the rear end of the horizontal shell 201 and extends downwards and forms a certain angle with the horizontal shell 201, and a transition shell 203 which is connected with the horizontal shell 201 and extends downwards. The transition housing 203 extends in substantially the same direction as the handle housing 202 and the transition housing 203 is located in front of the handle housing 202, i.e. the transition housing 203 is isolated from the handle housing 202.

In addition, the lower end of the transition housing 203 can be connected to the handle housing 202 through a bridge 207, thereby improving the strength of the transition housing 203. Moreover, the bridge portion 207 has a hollow structure so as to facilitate the transmission line 702 mentioned later to be inserted and received.

The spray gun 2 may further comprise a first flow passage for the passage of a cleaning liquid, housed in the spray gun housing, defined by a hollow tubular body. The first flow path extends obliquely upward from the bottom of the handle housing 202 and extends from the rear end to the front end of the horizontal housing 201 at the joint of the handle housing 202 and the horizontal housing 201. Thus, the first flow path may be segmented, including an angled segment 204 in the handle housing 202 and a horizontal segment 205 in the horizontal housing 201. Wherein, the upper end of the inclined section 204 is provided with a horizontal elbow 204a facing the horizontal section 205, and the horizontal section 205 and the horizontal elbow 204a are detachably connected in an inserting manner. Or, the rear end of the horizontal segment 205 is provided with an inclined elbow facing the inclined segment 204, and the inclined segment 204 is connected with the inclined elbow in a plugging manner. Thereby, the segmental detachable connection of the first flow channel is realized.

The first flow channel has an inlet 204a and an outlet 205a, and specifically, the end (lower end) of the inclined section 204 facing away from the horizontal section 205 is open to form the inlet 204a, and the end (front end) of the horizontal section 205 facing away from the inclined section is open to form the outlet 205 a. Thus, the inlet port 204a and the outlet port 205a are located in the handle housing and the horizontal housing, respectively. Further, the front end of the spray gun 2 may be provided with a barrel 4 communicating with the liquid outlet 205a of the first flow passage, and the end of the barrel 4 may be provided with a spray head assembly 5 for adjusting the amount of the liquid outlet. Thus, the motor 102 drives the pump body 103 to operate, liquid is sucked from the water inlet 105 and pressurized, and the pressurized cleaning liquid enters the first flow passage through the connecting piece 3 and is finally sprayed out at a high speed through the gun tube 4 and the spray head assembly 5, so that the surface of an object is cleaned.

The connecting member 3 is flexible or deformable and may have a second flow passage 302 therein communicating the outlet end of the pump body 103 with the first flow passage. Specifically, the second flow channel 302 can be detachably connected to the inlet end of the pump body 103 and the inlet 204a of the first flow channel by plugging.

As shown in fig. 2 and 3, the spray gun 2 may be provided with a microswitch 8 electrically connected to the motor 102 and controlling the on/off of the motor 102, a battery pack coupling portion 15 for mounting the battery pack 6, and a control circuit board 7 electrically connected to the battery pack coupling portion 15. The connector 3 may also include a transmission line 702, and the control circuit board 7 may be electrically connected to the motor 102 via the transmission line 702 to control the operation of the motor 102.

The battery pack combining part 15 is detachably connected with the battery pack 6, and the battery pack 6 is arranged for supplying power to the motor 102. The number of battery pack coupling portions 15 is the same as the number of battery packs 6, and is configured to enable the battery packs 6 to be attached or detached by sliding, snapping, clipping, or the like. As shown in fig. 3, the battery pack coupling portion 15 may be electrically connected to the control circuit board 7 through a circuit 601.

The number of lines 601 may be adaptively changed according to the number of battery packs 6 to which the pack coupling portion 15 can be mounted. Specifically, if the battery pack coupling portion 15 is configured to be able to mount only a single battery pack, that is, if the battery pack 6 is a single pack, the number of lines 601 may be 3, 1 positive power supply line, 1 negative power supply line, and 1 temperature signal line, respectively. Whereas if the battery pack coupling portion 15 is configured to be able to mount a dual battery pack, i.e., the battery pack 6 is a dual pack, the lines 601 may be 5, 1 positive power line, 1 negative power line, 1 middle phase line, and 2 temperature signal lines, respectively. The positive power line and the negative power line are used for supplying power, and the temperature signal line is used for uploading temperature data of the battery pack 6 to the control circuit board 7 so as to control power failure when the temperature of the battery pack 6 reaches a preset value and prevent the temperature of the battery pack 6 from being too high.

In a preferred embodiment, as shown in fig. 2, the battery pack coupling portion 15 may be provided in the transition housing 203. Thus, the inner space of the spray gun shell can be fully utilized to make room for the arrangement of the control circuit board 7 and the microswitch 8. Moreover, the battery pack combining portion 15 is disposed in the transition housing 203, so that the battery pack 6 can be away from the liquid inlet 204a and the liquid outlet 205a of the first flow channel, thereby avoiding the problems of liquid leakage due to poor sealing between the liquid inlet 204a and the liquid outlet 205a and the second flow channel 302 or the barrel 4, and further causing short circuit of the battery pack 6 due to the wetting of the leaked liquid.

In this embodiment, the micro switch 8 may generate an on/off signal when triggered, and the transmission line 702 connecting the control circuit board 7 and the motor 102 is at least used for transmitting the on/off signal to control the start/stop of the motor 102. Further, the transmission line 702 may also transmit electrical signals to the motor 102 for driving the operation thereof.

The connector 3 comprises the transmission line 702. specifically, the transmission line 702 is disposed in the second flow channel 302 of the connector 3, or the transmission line 702 is disposed in the sidewall of the connector 3, or the transmission line 702 is disposed outside the connector 3 and is disposed separately from the connector 3. In the embodiment where the transmission line 702 is disposed in the second flow channel 302 or outside the connector 3, the transmission line 702 may include a core and an insulating layer covering the core to prevent an electric leakage accident. In the embodiment that the transmission line 702 is arranged in the side wall of the connecting piece 3, the connecting piece 3 is made of an insulating material, so that the connecting piece 3 can perform the functions of insulating and preventing electric leakage on the transmission line 702, the connecting piece 3 in the embodiment can be specifically a water-electricity integrated pipe, and the connecting piece 3 can realize the electric connection between the motor 102 and the control circuit board 7 while realizing the water path connection by being plugged in the first flow path.

In this embodiment, the on/off signal may be directly generated and sent by the micro switch 8, or may be generated and sent by the control circuit board 7 based on the triggering of the micro switch 8. In the embodiment where the microswitch 8 is directly generated and sent out, the microswitch 8 can be arranged on the transmission line 702 connecting the motor 102 and the control circuit board 7, and then the microswitch 8 is triggered to be switched on or off, so that the electric connection between the control circuit board 7 and the motor 102 can be directly switched on or off.

In this embodiment, the number of micro switches 8 may vary depending on the type of motor 102. Specifically, the motor 102 may be a three-phase dc brushless motor, a two-phase dc brushless motor, or a unidirectional dc brushed motor. The three-phase brushless direct current motor or the two-phase brushless direct current motor can operate under the condition that at least part of phases are conducted, and stops operating under the condition that three phases or two phases are all power-off. For example, the three UVW phases of the three-phase dc brushless motor are all turned on, or the three UVW phases are de-energized to any one or two phases, so that the three-phase dc brushless motor can operate. And the unidirectional direct current brush motor operates under the condition that the positive pole and the negative pole of the unidirectional direct current brush motor are both conducted, and stops operating under the condition that one pole or two poles of the unidirectional direct current brush motor are disconnected.

Therefore, when the motor 102 is a three-phase dc brushless motor or a two-phase dc brushless motor, the number of the transmission lines 702 connecting the motor 102 and the control circuit board 7 is 3 or 2, respectively, and the three-phase dc brushless motor or the two-phase dc brushless motor is correspondingly connected to the three-phase or two-phase transmission lines, respectively. The number of the micro switches 8 is not less than the number of the transmission lines 702, and each transmission line 702 is provided with at least one micro switch 8. In this way, all the micro switches 8 are triggered to be switched off, and the conduction relation between the control circuit board and the whole phase of the three-phase brushless direct current motor or the whole phase of the two-phase brushless direct current motor is cut off, so that the stop control of the motor 102 is realized. I.e. 3 or 2 operations are required, all the micro-switches 8 are turned off, so that the motor 102 can be stopped. Or, all the microswitches 8 are triggered to be closed, or part of the microswitches 8 are triggered to be opened while at least one microswitches 8 are kept in a closed state, so as to realize the opening control of the motor 102.

When the motor 102 is a unidirectional dc brushed motor, 2 transmission lines 702 connecting the motor 102 and the control circuit board 7 are respectively connected to the positive and negative electrodes of the unidirectional dc brushed motor. The number of the micro switches 8 may be 1, and the micro switches are disposed on any 1 transmission line 702, or may be 2 or more, and at least 1 micro switch 8 is disposed on each transmission line 702. In this way, all the microswitches 8 are triggered to close, so that the motor 102 is turned on. And any 1 of the micro switches 8 is triggered to be switched off, so that the motor 102 can be stopped.

Thus, the on-off of the motor 102 is directly controlled by the on-off signal generated by the trigger of the microswitch 8.

With continued reference to fig. 3, in embodiments where the on/off signal is generated and transmitted by control circuit board 7, micro-switch 8 may be connected to control circuit board 7 via line 803. The number of lines 803 may vary depending on the type of motor 102. Specifically, if the motor 102 is a three-phase dc brushless motor or a two-phase dc brushless motor, the micro switch 8 may be a bypass switch having three or two contacts, and the three or two contacts may be connected to the control circuit board 7 through 3 or 2 lines 803, respectively. If the motor 102 is a unidirectional dc brush motor, the micro switch 8 may be a loop switch, which may be connected to the control circuit board 7 via 2 lines 803 (positive power line and negative power line, respectively). The on-off signal is generated by controlling the circuit board 7, so that the on-off control of the motor 102 is easier. In actual operation, the user only needs to operate 1 time to start or stop the motor 102. Thus, the operation is simple.

Referring to fig. 2, the microswitch 8 may be provided with a button 801 and a reed 802 cooperating with the button 801, and the spray gun 2 is provided with a trigger 11, the trigger 11 having a finger 1101 located within the spray gun 2 and cooperating with the reed 802. The trigger 11 may be disposed at the handle housing 203, and an operator may conveniently perform a pinching or releasing operation of the trigger 11 by holding the trigger on the handle housing 203 with a hand.

Further, the trigger 11 is rotatably connected to the spray gun 2 at a position near the finger end 1101, and a return member 12 (e.g., a spring) is provided between the spray gun 2 and the trigger 11, and the return member 12 applies a return force to the trigger 11 so that it always has a movement toward the open position. Thus, the trigger 11 is released and the trigger 11 is automatically reset to the off position by the reset force provided by the reset member 12.

When the trigger 11 is manually moved to the working position by the operator, the finger end 1101 presses the reed 802 downward, and the button 801 is pressed by the reed 802. At this time, the control circuit board 7 triggers generation of an activation signal, the activation signal is added to the driving signal transmitted to the motor 102 by the control circuit board 7, and the motor 102 is driven to operate. When the operator releases the trigger 11 to return from the operating position or switch to the off position, the finger 1101 is lifted, and the button 801 and the reed 802 are sprung. At this time, the control circuit board 7 triggers generation of a stop signal, which is added to the drive signal transmitted to the motor 102 by the control circuit board 7, and the motor 102 then stops running.

Therefore, the opening and closing of the motor 102 are indirectly controlled by the opening and closing signal generated by the control circuit board 7 triggered by the microswitch 8.

Referring to fig. 1 to 3, the spray gun 2 may further include a power display element 9 for indicating the remaining power of the battery pack 6 and a speed adjustment element 10 for controlling the rotation speed of the motor 102, and the power display element 9 and the speed adjustment element 10 may be connected to the control circuit board 7 through a circuit 904 and a circuit 1005, respectively. As shown in fig. 3, the power display element 9 includes a plurality of indicator lights (e.g., 3, 4, 5 …, etc.), and the lines 904 are 3 lines, i.e., 1 positive power line, 1 negative power line, and 1 power signal line.

The speed regulating element 10 has a plurality of contacts for user to trigger, and when the user operates to make the contacts located at different positions, the MCU on the control circuit board 7 is triggered to generate a speed regulating signal for regulating the rotation speed of the motor 102, thereby realizing the rotation speed regulation of the motor 102. The rotation speed adjusting mechanism of the motor 102 may be that the driving signal provided by the control circuit board 7 to the motor 102 is a pulse width modulation signal, and based on the speed regulating signal, the duty ratio of the driving signal is changed, so that the rotation speed adjustment of the motor 102 can be realized.

The lines 1005 may also be 3 lines, and are divided into 1 positive power line, 1 negative power line, and 1 speed-adjusting signal line. Further, the speed adjusting element 10 may be configured with a speed adjusting display component, such as a speed adjusting display lamp, and the speed adjusting display component may be connected to the control circuit board 7 through the 4 th line. That is, in the embodiment in which the throttle element 10 is provided with the throttle display means, the number of the lines 1005 is 4.

The battery pack coupling portion 15 connected to the control circuit board 7, the motor 102, and the microswitch 8 are essential components, and therefore, they cannot be omitted. The power display element 9 and the speed regulation element 10 are optional components and may be omitted in some embodiments.

After the electronic components are arranged and the circuit connection is designed, the arrangement position of the control circuit board 7 needs to be considered.

In a possible embodiment, if the control circuit board 7 is disposed in the host 1, the control circuit board 7 and the motor 102 are closer to each other, and the connection line between the control circuit board 7 and the motor 102 may be shorter. However, at this time, there are connecting lines between the control circuit board 7 and the battery pack combining portion 15 and between the control circuit board 7 and the micro switch 8 between the spray gun 2 and the main body 1, and there are at least 5 lines in the connecting member 3, which are at least 3 lines 601 connecting the control circuit board 7 and the battery pack combining portion 15 and at least 2 lines 803 connecting the control circuit board 7 and the micro switch 8, respectively. In the embodiment with the power display element 9 and the speed control element 10, at least 11 lines of the connecting elements 3 are available. Specifically, in addition to the control circuit board 7 and the battery pack combining portion 15, and the control circuit board 7 and the microswitch 8, there are 3 circuits 904 between the control circuit board 7 and the electric quantity display element 9, and at least 3 circuits 1005 between the control circuit board 7 and the speed regulation element 10.

In this way, although the connection line between the control circuit board 7 and the motor 102 is shortened, since most of the electronic components connected to the control circuit board 7 are provided on the spray gun 2, the connection line between the electronic components such as the battery pack coupling portion 15, the micro switch 8, the electric quantity display element 9, and the speed control element 10 provided on the spray gun 2 and the control circuit board 7 is greatly extended. Therefore, the circuit of the whole machine is long, the circuits of the battery pack combination part 15, the microswitch 8, the electric quantity display element 9 and the speed regulation element 10 are connected in the spray gun 2, the circuit structure is complex, and the circuit layout is unreasonable.

In view of this, in the present embodiment, the control circuit board 7 is provided in the spray gun 2. The connection lines between the control circuit board 7 and the battery pack engaging portion 15, the micro switch 8, the power display element 9 and the speed regulating element 10 may all be arranged inside the spray gun 2, so that only the transmission line 702 between the control circuit board 7 and the motor 102 is connected between the spray gun 2 and the main body 1. Practice proves that the number of the transmission lines 702 does not exceed 6 at most by adopting the structural layout design, so that the number of the lines between the main machine 1 and the spray gun 2 can be greatly reduced. And the microswitch 8, the battery pack 6 and the control circuit board 7 are compactly arranged in the spray gun 2, and the circuit and the structure on the spray gun 2 are compact. Namely, the length of the circuit for connecting and controlling the circuit board 7 and the battery pack combining part 15, the microswitch 8, the electric quantity display element 9, the speed regulation element 10 and other electronic components in the spray gun 2 is shorter, so that the circuit structure is simple, and the circuit layout is more reasonable.

As shown in fig. 2, the control circuit board 7 may be provided in the horizontal housing near the battery pack engaging portion 15, and the micro switch 8 may be provided in the horizontal housing as well near the control circuit board 7. Specifically, the control circuit board 7 may be vertically disposed in the horizontal housing, and the position of the control circuit board in the horizontal housing is approximately the connecting position of the horizontal housing and the transition housing. The microswitch 8 is arranged on the upper surface of the horizontal machine shell close to the rear end. Thus, the control wiring board 7 is interposed between the battery pack coupling portion 15 and the microswitch 8. Therefore, the distance between the control circuit board 7 and the battery pack combining part 15 and the distance between the control circuit board 7 and the microswitch 8 are both short, and the control circuit board 7, the battery pack combining part 15 and the microswitch 8 are compactly arranged together, so that the reduction of the volume of the spray gun 2 is facilitated. And, the three are close to each other, can shorten the circuit length of connecting battery junction, micro-gap switch 8 and control circuit board 7, make the circuit connect simply, the circuit layout is comparatively reasonable.

In summary, in the embodiment where the motor 102 does not have the gearshift function, that is, the speed adjusting element 10 is not present, the driving signal transmitted from the transmission line 702 to the motor 102 may only include an on/off signal for controlling the start/stop of the motor 102 and an electrical signal for driving the motor 102 to operate. The on-off signal is directly generated and sent by the micro switch 8 when the micro switch 8 is arranged on the transmission line 702 connecting the control circuit board 7 and the motor 102, and is generated and sent by the control circuit board 7 based on the micro switch 8 in the embodiment that the micro switch 8 is connected with the control circuit board 7 through the line 803.

Correspondingly, in the embodiment that the motor 102 has a gear shifting and speed regulating function, that is, the speed regulating element 10 exists, and the speed regulating element 10 is electrically connected with the control circuit board 7, the driving signal transmitted by the transmission line 702 to the motor 102 includes not only an on-off signal for controlling the start and stop of the motor 102 and an electric signal for driving the motor 102 to operate, but also a speed regulating signal for driving the motor 102 to shift and speed regulate, and the speed regulating signal is generated and sent by the control circuit board 7 when the speed regulating element is triggered.

Since the speed adjusting element 10 is connected to the control circuit board 7 via the line 1005, the speed adjusting element 10 does not relate to the embodiment provided on the transmission line 702. Thus, the number of the transmission lines 702 is not affected by whether the speed-adjusting element 10 is provided or not. Therefore, the number of transmission lines 702 can be referred to above, and specifically, the number of transmission lines 702 can vary according to the type of the motor 102.

Specifically, for example, in one embodiment, the on/off signal and the speed control signal are both generated and sent out by the control circuit board 7, that is, the control circuit board 7 controls the motor 102 to regulate speed and on/off simultaneously. At this time, the micro switch 8 is directly connected to the control circuit board 7 through the line 803, and the number of the transmission lines 702 may be 2 or 3. Specifically, when the motor 102 is a two-phase dc brushless motor or a unidirectional dc brushed motor, 2 transmission lines 702 are provided, one end of each of the 2 transmission lines 702 is correspondingly connected to the positive and negative electrodes of the two-phase or unidirectional dc brushed motor of the two-phase dc brushless motor, and the other end is connected to the control circuit board 7. When the motor 102 is a three-phase dc brushless motor, the number of the transmission lines 702 is 3, one end of each of the 3 transmission lines 702 is correspondingly connected to the UVW three phases of the three-phase dc brushless motor, and the other end is connected to the control circuit board 7.

In the above embodiment, the number of lines 803 varies depending on the type of the motor 102. Specifically, when the motor 102 is a two-phase dc brushless motor or a unidirectional dc brushed motor, 2 lines 803 are provided. When the motor 102 is a three-phase dc brushless motor, the number of lines 803 is 3.

Or, in another embodiment, the on-off signal is generated and sent by the microswitch 8, and the speed regulation signal is generated and sent by the control circuit board 7, namely, the speed regulation of the motor 102 is controlled by the control circuit board 7, and the on-off is directly controlled by the microswitch 8. At this time, the micro switch 8 may be provided on the transmission line 702 connecting the motor 102 and the control wiring board 7.

The on/off signal and the speed regulation signal can be transmitted by the same transmission line 702, that is, the on/off signal and the speed regulation signal are transmitted simultaneously. The number of transmission lines 702 may be 2 or 3, depending on the type of electric machine 102. The specific implementation manner is the same as that of the above embodiment, that is: when the motor 102 is a two-phase brushless dc motor or a single-phase brushless dc motor, the number of the transmission lines 702 is 2, and at least one micro switch 8 is disposed on each of the 2 transmission lines 702. When the motor 102 is a three-phase dc brushless motor, the number of the transmission lines 702 is 3, and at least one micro switch 8 is disposed on each of the 3 transmission lines 702.

Alternatively, the on/off signal and the speed control signal may be transmitted by different transmission lines 702, i.e., the on/off signal and the speed control signal are transmitted separately. The transmission lines 702 can be divided into two groups, and the two groups of transmission lines 702 are connected between the motor 102 and the control circuit board 7, wherein one group of transmission lines 702 is used for transmitting the speed regulating signal sent by the control circuit board 7, and the other group of transmission lines 702 is used for transmitting the on-off signal sent by the microswitch 8.

Specifically, the transmission line 702 may include a first transmission line 702 and a second transmission line 702, the first transmission line 702 being used to transmit the timing signal. The micro switch 8 is disposed on the second transmission line 702, and is used for transmitting an on-off signal directly generated and sent when the micro switch 8 is triggered. The number of transmission lines 702 may be 3, 4, or 6, again with the particular number of transmission lines 702 being dependent on the type of motor 102. That is, when the motor 102 is a three-phase dc brushless motor, the number of the transmission lines 702 is 6, wherein the number of the first transmission lines 702 and the number of the second transmission lines 702 are 3, one end of each of the 3 first transmission lines 702 and one end of each of the 3 second transmission lines 702 are respectively and correspondingly connected to three phases of the three-phase dc brushless motor, the other end of each of the 3 first transmission lines 702 is connected to the control circuit board 7, the 3 first transmission lines 702 are used for transmitting speed-adjusting signals, and at least one micro switch 8 is respectively disposed on each of the 3 second transmission lines 702 to control the start and stop of the motor 102. When the motor 102 is a two-phase brushless dc motor, the number of the transmission lines 702 is 4, wherein the number of the first transmission lines 702 and the number of the second transmission lines 702 are 2, one end of each of the 2 first transmission lines 702 and one end of each of the 2 second transmission lines 702 are respectively and correspondingly connected with two phases of the two-phase brushless dc motor, the other end of each of the 2 first transmission lines 702 is connected with the control circuit board 7, the 2 first transmission lines 702 are used for transmitting speed regulation signals, and at least one microswitch 8 is arranged on each of the 2 second transmission lines 702 to control the on/off of the motor 102. When the motor 102 is a unidirectional dc brushed motor, the number of the transmission lines 702 may be 3 or 4, wherein 2 first transmission lines 702 are provided, 1 or 2 second transmission lines 702 are provided, 2 first transmission lines 702 are respectively and correspondingly connected to the positive and negative electrodes of the unidirectional dc brushed motor, the other end is connected to the control circuit board 7 for transmitting a speed regulation signal, one end of each of the 1 or 2 second transmission lines 702 is connected to the positive and/or negative electrode of the unidirectional dc brushed motor, the other end is connected to the control circuit board 7, and at least one microswitch 8 is provided on each of the 1 or 2 second transmission lines 702 for controlling the start and stop of the motor 102.

Thus, by providing the electronic components to be connected to the control circuit board 7 other than the motor 102 on the spray gun 2, the wiring between the electronic components provided on the spray gun 2 and the control circuit board 7 can be shortened. Whereas the longer connection line, i.e. the transmission line 702, is present only in the connection piece 3 connecting the main unit 1 and the spray gun 2. Further, by providing the control circuit board 7 also on the spray gun 2, the number of the transmission lines 702 connecting the motor 102 and the control circuit board 7 can be greatly reduced compared to the prior art in which the control circuit board 7 is provided on the main unit 1. Therefore, the circuit structure is simplified, and the wiring is more reasonable.

In addition, the cleaning machine of the embodiment of the invention has the advantages that the main machine 1 comprising the motor 102 and the pump body 103 and the spray gun 2 are in a separated structural design, and the main machine and the spray gun are connected through the connecting piece 3, so that the cleaning machine is small in integral volume and convenient to use. During operation, an operator only needs to hold the spray gun 2 to clean, the main machine 1 can be placed or submerged in a water source or dragged to walk, the portability is good, and the cleaning range is greatly expanded.

Since the control circuit board 7 is provided with electronic components, these electronic components generate heat during operation. If the heat cannot be dissipated in time, the normal operation of the control circuit board 7 will be adversely affected. In view of this, the control circuit board 7 is disposed in the spray gun 2 in such a manner as to be close to the first flow passage. In particular, in keeping with the above description, the control circuit board 7 is disposed in a horizontal housing of the spray gun 2 and is disposed in a vertical position. The horizontal section 205 of the first flow channel is arranged in the horizontal casing in a penetrating way, and the control circuit board 7 is positioned at one side of the horizontal section 205. Thus, during the operation of the cleaning machine, the heat generated by the control circuit board 7 can be transferred to the cleaning liquid flowing in the first flow channel and carried away. Therefore, the cleaning liquid flowing in the first flow channel of the spray gun 2 is used as a cooling medium to realize heat dissipation and cooling of the control circuit board 7.

As shown in fig. 4 and 5, the control circuit board 7 is provided with electronic components, which may include, but are not limited to, resistors, capacitors, MOS transistors 701, and the like, and the number of the above components is generally plural. In which MOS transistor 701 generates more heat than other elements, and is a heat-generating concentrated component. Therefore, in order to dissipate heat generated by the MOS transistors 701, a plurality of MOS transistors 701 may be provided on the surface of the control wiring board 7 facing the horizontal section 205, and other components may be provided on the surface of the control wiring board 7 facing away from the horizontal section 205. Therefore, main heat generating components on the control circuit board 7 are closer to the first flow channel, and the heat dissipation temperature reduction efficiency can be effectively improved.

Further, in order to improve the heat dissipation efficiency of the MOS transistors 701, a plurality of MOS transistors 701 may be arranged along the length direction of the horizontal segment 205. That is, the plurality of MOS tubes 701 are arranged along the flow direction of the cleaning liquid in the horizontal section 205 of the first flow path (the arrow direction shown in fig. 5 to 7). As shown in fig. 6, the plurality of MOS transistors 701 may be arranged on the control circuit board 7 in a single row, and the arrangement extending direction of the plurality of MOS transistors 701 arranged in the single row is the same as the length direction of the horizontal section 205. Alternatively, as shown in fig. 7, the plurality of MOS transistors 701 may be arranged on the control circuit board 7 in multiple rows and multiple columns, and the arrangement extending direction of the plurality of MOS transistors 701 arranged in multiple rows and multiple columns is the same as the length direction of the horizontal section 205. Thus, the MOS transistors 701 traverse the length of the horizontal segment 205 as much as possible, and the heat dissipation effect of the cleaning solution flowing through the horizontal segment 205 is fully utilized to maximize the heat dissipation effect of the MOS transistors 701.

In one embodiment, the horizontal segment 205 may include a cooling segment 206, which is a tube with one end being independent and disposed in the horizontal housing 201, and two ends being connected to the tubes on two sides, respectively, to form the cooling segment 206. Preferably, the cooling section 206 is made of a material with good thermal conductivity, such as iron, copper, etc. The control circuit board 7 is disposed in such a manner that the electronic components are close to or in close proximity to the cooling section 206. Therefore, the distance between the electronic component and the cooling section 206 is reduced as much as possible, and the heat dissipation effect is improved to the maximum extent.

As shown in fig. 4, in order to increase the contact area between the control wiring board 7 and the cooling section 206, a part of the side wall of the cooling section 206 is a straight wall 1301. Thus, the outer surface of the straight wall 1301 is a plane, and the control wiring board 7 is attached to the outer surface of the straight wall 1301. While the other side walls connected to the straight wall 1301 may have any shape, such as a semi-circular arc shape, a semi-elliptical arc shape, a polygonal shape, etc., so that the cross-sectional shape of the cooling section 206 corresponds to a semi-circular, semi-elliptical, polygonal shape. As shown in fig. 5, preferably, the cross section of the portion of the cooling section 206 attached to the control circuit board 7 is semicircular, and the two ends of the cooling section maintain circular cross sections, so as to facilitate connection with the pipe bodies on the two sides thereof by means of insertion.

If the portion of the cooling section 206 to which the control circuit board 7 is attached has an arc shape or a polygonal shape, the contact therebetween is line contact or small surface contact. The structural design that the part where the cooling section 206 and the control circuit board 7 are attached is the straight wall 1301 can improve the contact area of the two to the maximum extent, and further improve the heat dissipation efficiency.

Further, a heat transfer element 14 is disposed between the control circuit board 7 and the outer surface of the straight wall 1301 of the cooling section 206, and the heat transfer element 14 may be made of a Material with a good heat conduction performance, such as any suitable Thermal Interface Material (TIM), which also has good flexibility, so as to fill the space between the electronic component and the outer surface of the straight wall 1301, discharge the air layer between the electronic component and the straight wall 1301, and fill up the micro-gaps and the holes with uneven surfaces generated when the electronic component and the outer surface of the straight wall 1301 are in contact with each other, thereby reducing the Thermal resistance and improving the heat dissipation efficiency.

As shown in fig. 4, the component box 13 is fixed to the horizontal housing 201, the control circuit board 7 is provided on the component box 13, and the component box 13 is connected to the cooling section 206. In this way, the dispensing cassette 13 can be used as a carrier to fix the circuit board 7 and the cooling section 206.

The heat dissipation function is mainly performed by the cleaning liquid flowing through the cooling section 206. Therefore, in order to minimize the distance between the component to be cooled and the cooling medium, the cooling section 206 and the separate packaging box 13 are connected at a straight wall 1301, and the cooling section 206 and the separate packaging box 13 share the straight wall 1301. That is, the cooling section 206 is integrally constructed with the dispensing box 13, and the straight wall 1301 constitutes a part of the structure of the dispensing box 13 itself. Thus, the control circuit board 7 provided on the component packaging box 13 and the cooling medium flowing through the cooling section 206 are separated by only one straight wall 1301, so that the solid insulation between the MOS transistor 701 provided on the control circuit board 7 and the cooling medium is compressed to the maximum extent, and the heat dissipation efficiency is effectively improved.

Specifically, the housing 13 includes a bottom wall 1302 connected to a straight wall 1301 of the cooling section 206, the straight wall 1301 partially overlapping the bottom wall 1302. Alternatively, the bottom wall 1302 of the separate packaging box 13 may be configured by a straight wall 1301 and an extended portion formed by extending the straight wall 1301 outward (in the vertical direction as shown in fig. 4) in the direction perpendicular to the longitudinal direction of the cooling stage 206. The control circuit board 7 may be fixed to the bottom wall 1302 by means of screw connection.

Moreover, the sub-packaging box 13 may further include a protrusion 1303 formed on an edge of the bottom wall 1302, and the protrusion 1303 and the bottom wall 1302 define an accommodating groove for accommodating the control circuit board 7 therein. The control circuit board 7 does not rise above the projection 1303, and is thus completely accommodated in the accommodation groove. Thus, effective protection can be provided for the control wiring board 7.

Therefore, by arranging the control circuit board 7 in the spray gun 2 close to the horizontal section 205 of the first flow passage, heat generated by the control circuit board 7 can be transferred to the cleaning liquid flowing in the horizontal section 205 and carried away during the operation of the cleaning machine. Thus, the cleaning liquid flowing in the horizontal section 205 of the spray gun 2 is used as a cooling medium to realize heat dissipation and cooling of the control circuit board 7. In this way, it is not necessary to add another cooling device such as a fan to perform heat dissipation processing on the control circuit board 7. Therefore, the heat dissipation of the control circuit board 7 is realized by fully utilizing the structure of the cleaning machine, and the structural complexity of the cleaning machine is not increased.

It should be noted that, in the description of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no order is present therebetween, and no indication or suggestion of relative importance is to be understood. In the description of the present invention, unless otherwise specified, "a plurality" means two or more.

The above description is only a few embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the disclosure of the application document without departing from the spirit and scope of the present invention.

Claims

1. A cleaning machine, comprising:

2. The washer of claim 1, wherein said microswitch generates an on/off signal when triggered; the transmission line is at least used for transmitting an opening and closing signal so as to control the starting and the stopping of the motor.

3. The cleaning machine of claim 2 further comprising a speed regulating element disposed on the spray gun and electrically connected to the control circuit board; the control circuit board generates and sends out a speed regulation signal when the speed regulation element is triggered; the transmission line is also used for transmitting the speed regulating signal so as to control the speed regulation of the motor.

4. The cleaning machine of claim 2 or 3 wherein said micro-switch is electrically connected to said control circuit board, said on and off signals being generated and emitted by said control circuit board when said micro-switch is triggered.

5. The cleaning machine as claimed in claim 2 or 3, wherein said micro switch is provided on said transmission line, and said on-off signal is generated and emitted when said micro switch is triggered.

6. The cleaning machine of any one of claims 2 or 3,

the motor is a three-phase direct current brushless motor, the number of the transmission lines is 3, and the transmission lines are respectively correspondingly connected with three phases of the three-phase direct current brushless motor; alternatively, the first and second electrodes may be,

7. The cleaning machine of claim 3 wherein said transmission lines include a first transmission line and a second transmission line, said first transmission line for transmitting said throttle signal; the microswitch is arranged on the second transmission line, the start and stop signal is generated and sent out when the microswitch is triggered, and the second transmission line is used for transmitting the start and stop signal.

8. The cleaning machine of claim 7,

the motor is a three-phase brushless DC motor, the number of the first transmission lines and the number of the second transmission lines are 3, the 3 first transmission lines are respectively and correspondingly connected with the three phases of the three-phase brushless DC motor, and the 3 second transmission lines are also respectively and correspondingly connected with the three phases of the three-phase brushless DC motor; alternatively, the first and second electrodes may be,

the motor is a unidirectional direct current brush motor, the number of the first transmission lines is 2, the number of the second transmission lines is 1 or 2, the number of the 2 first transmission lines is respectively and correspondingly connected with the positive pole and the negative pole of the unidirectional direct current brush motor, and the number of the 1 or 2 second transmission lines is connected with the positive pole and/or the negative pole of the unidirectional direct current brush motor.

9. The cleaning machine of claim 3 wherein said throttle element is electrically connected to the control circuitry by at least 3 lines, said at least 3 lines including 1 positive power line, 1 negative power line and 1 throttle signal line.

10. The cleaning machine of claim 9 wherein said speed regulating element is provided with a speed regulating display member, said speed regulating display member being electrically connected to said control circuit board through a 4 th wire.

11. The cleaning machine of claim 1, wherein the spray gun is further provided with a power display element for indicating the remaining power of the battery pack, the power display element is electrically connected with the control circuit board through at least 3 lines, and the at least 3 lines comprise 1 positive power line, 1 negative power line and 1 power signal line.

12. The washing machine as claimed in claim 1, wherein when the pack coupling portion is configured for mounting a battery pack, the pack coupling portion is electrically connected to the control circuit board through 3 lines, the 3 lines including 1 positive power supply line, 1 negative power supply line, and 1 temperature signal line.

13. The washing machine as claimed in claim 1, wherein when the pack coupling part is configured to mount a dual pack, the pack coupling part is electrically connected to the control circuit board through 5 lines, the 5 lines including 1 positive power line, 1 negative power line, 1 middle phase line, and 2 temperature signal lines.

14. The washer according to claim 1, wherein said spray gun includes a spray gun housing receiving said first flow passage therein, said spray gun housing including a horizontal housing, a downwardly extending handle housing located at a rear end of said horizontal housing, a transition housing connected to said horizontal housing and extending downwardly, said transition housing located forward of said handle housing;

15. The cleaning machine of claim 14 wherein said first flow path includes a horizontal section in said horizontal housing, an angled section connected to said horizontal section and located in said handle housing; the end opening that the slope section deviates from the horizontal segment forms the inlet, the horizontal segment deviates from the end opening of slope section forms the liquid outlet.

16. The cleaning machine of claim 15 wherein said control circuit board is disposed in said horizontal housing proximate said battery pack engaging portion; the microswitch is arranged in the horizontal casing and is close to the control circuit board.

17. The cleaning machine of claim 15, wherein the control circuit board is located on one side of the horizontal section, an electronic component is disposed on the control circuit board, the electronic component at least includes a plurality of MOS transistors, the plurality of MOS transistors are disposed on a surface of the control circuit board facing the horizontal section, and the plurality of MOS transistors are arranged along a length direction of the horizontal section.

18. The cleaning machine of claim 17 wherein said horizontal section includes a cooling section, a portion of the side walls of said cooling section being a straight wall, said control circuit board being disposed on said straight wall, and a heat transfer member being disposed between said control circuit board and said straight wall.

19. The cleaning machine of claim 18 wherein said control circuit board is disposed within a dispensing cartridge, said cooling section being connected to said dispensing cartridge, said dispensing cartridge being secured within said horizontal housing; the distribution box comprises a bottom wall connected with a straight wall of the cooling section, the straight wall is overlapped with the bottom wall, and the control circuit board is fixed on the bottom wall.

20. The cleaning machine of claim 19 wherein said dispensing cartridge further includes a projection formed on an edge of said bottom wall, said projection and said bottom wall defining a receiving recess for receiving said control circuit board therein.

21. A cleaning machine, comprising: