CN1743630A - Pool cleaner and cleaning method thereof - Google Patents

Abstract

The invention discloses a pool cleaning vehicle and a cleaning method thereof, the pool cleaning vehicle comprises a shell, a driving device capable of driving the cleaning vehicle to move forwards and backwards, a control device connected with the driving device and a cleaning device, and is characterized in that the driving device provides a secondary speed for entering water, so that the cleaning vehicle can discharge air in the shell in the process of entering the water; the drive also provides a primary speed for operation, causing the vehicle to traverse the bottom and side walls of the pool at the primary speed. The pool cleaner of the present invention can enter water at a slower secondary rate, effectively remove air and maintain its neutral buoyancy throughout the cleaning process. Meanwhile, the pool cleaning machine has high main speed, so that the procedure of cleaning the pool can be completed more quickly.

Description

Pool cleaner and cleaning method thereof

technical field

The invention relates to a pool cleaning machine, in particular to a pool cleaning machine with intelligent position control and variable speed;

The invention also relates to a method of cleaning using the pool cleaner of the invention.

Background technique

Existing pool cleaning machines, whether driven by electric motors or water turbines, are designed to travel at an approximately constant speed. Some cleaning machines may change their speed during the transition from horizontal cruising to vertical climbing, or from vertical climbing to horizontal cruising. And some cleaning machines change the speed when changing from forward to reverse, for example, the cleaning machine climbs up the wall to the water surface and changes it into downward climbing. Some cleaning machines are designed to maintain neutral buoyancy with the water in the working environment, but the cruising speed at the bottom of the pool and the speed when climbing vertically up and down are changed due to the influence of gravity . In any case, these speed changes are not due to the desire to achieve a certain purpose and the operation under program control, so they do not bring better efficiency and functionality to the pool cleaner.

For example, in U.S. Patent No. 6,485,638 B2, an automatic swimming pool cleaning system is disclosed, which includes a single body that can be submerged in water; a power source; a level control subsystem for selectively moving the body close to the surface of the pool or to the inner surface close to the pool wall; a drive subsystem operable to selectively propel the body in a forward or rearward direction; and a cleaning subsystem to skim or scoop water surface cleaning modes, or to vacuum or Sweeping pool wall cleaning mode operation. It can clean the water surface and the pool wall surface of the swimming pool respectively, but the above-mentioned defects still exist.

1 is a schematic structural view of a specific pool cleaning machine in the prior art. A pool cleaning machine uses a motor as a driving device 105, and a buoyancy switch 111a and 111b are installed at both ends of the cleaning machine shell 100 according to the length. Proceed at a roughly constant speed when the cleaner is on the bottom of a pool or climbing up and down walls. When the cleaning machine is at the bottom of the pool or the shell of the whole cleaning machine is submerged under the water surface, the buoyancy switch does not touch; when the cleaning machine climbs to the top of the wall, the front part of the cleaning machine will float out of the water and make the buoyancy switch contact. Generate a signal to change the motor drive direction. Figure 2 is the working flow chart of the pool cleaning machine. It can be seen from the flowchart that the existing control device only controls the direction of the driving device. When the pool cleaning machine changes the forward direction according to the operating position, the control device sends a signal to change the direction without changing the speed. Specific control methods include:

Step 201, start the pool cleaning machine to move forward at a fixed speed;

Step 202, climbing down or up according to the pool wall or cruising at the bottom of the pool;

Step 203, judging whether the front end of the cleaning machine is exposed to the water surface, if yes, execute step 204, otherwise execute step 202;

Step 204 , the driving device advances in the opposite direction, go to step 202 .

In the cleaning system of the prior art, the general operating speed of the swimming pool cleaning machine is about 1.5 meters per minute to 3 meters per minute. The time required to clean the swimming pool is related to the size of the swimming pool. For a general public or commercial swimming pool, The cleaning machine takes six to eight hours to clean a pool. Cleaning a larger pool must be done when the pool is out of use, generally at night, or when the pool is closed for the week, or at other times when it is generally inconvenient or uneconomical to schedule maintenance Personnel were on hand to assist with pool cleaning. Although the power supply system can be set with a time switch function, due to unpredictable circumstances, the process of the cleaning machine may be disturbed or interrupted, so that the pool cleaning work is terminated before it is completed. For example: the float wires of the cleaning machine may be entangled and interfere with the preset cleaning program; or the cleaning machine may be stuck in one corner of the pool, or on the side steps of the pool, or by other obstacles on the side of the pool .

In order to help the pool cleaning machine to patrol the bottom of the pool and climb up and down the pool wall during the cleaning process, the pool cleaning machine needs to maintain neutral buoyancy, that is, the pool cleaning machine is used in seawater and fresh water environments, the pool cleaning machine The structure is different to adapt to the relative density (weight/volume) of different water quality to maintain neutral buoyancy. For example, in a pool cleaner designed to be used in a freshwater pool, an additional weight can be added to the cover or bottom of the pool cleaner to increase the density of the entire pool cleaner to adapt to the operating environment of a seawater pool.

A person skilled in the art generally knows that when the pool cleaner climbs up the wall to the surface of the water to clean the scum line, part of the pool cleaner setup needs to be exposed to the water, and air will enter the cover and floor of the pool cleaner In the interval between, when the pool cleaner returns to climb down, the air must be squeezed out of the interval by the water to maintain the neutral buoyancy of the pool cleaner. On the other hand, when the user starts to clean the pool, he usually puts the pool cleaning machine down on the pool wall at a vertical angle and turns on the power.

Existing pool cleaners, if operated at relatively high speeds to climb rapidly down the water, often have air trapped in the space between the cover and floor of the pool cleaner, adding buoyancy to the pool cleaner Float the cleaner away from its intended vertical, wall-mounted operating position. If the air cannot be completely discharged in the end, the cleaning machine will float on the water surface of the pool; if the air is finally squeezed out of the gap by the pool water, the cleaning machine will sink to the bottom of the pool, and the cleaning machine may be upside down or sideways when it descends It cannot be operated and stays at the bottom of the pool, or the cleaning machine may normally sink to the bottom of the pool and start to operate, but because it does not start from the predetermined position, the scheduled program operation is disturbed, and a part of the pool area is not cleaned. .

Contents of the invention

One object of the present invention is to provide a pool cleaning machine, which solves the problem of ineffective cleaning caused by the inability of the existing pool cleaning machine to operate at a predetermined position due to the inability to effectively remove air when entering the water, and it can operate at a relatively fast speed , Improve cleaning efficiency.

Another object of the present invention is to provide a method of cleaning a pool using the cleaning machine of the present invention, which provides a primary speed and a secondary speed through the programming control of the pool cleaning machine, so that the pool cleaning machine can accurately reach the predetermined position , and can quickly clean the pool.

In order to achieve the above object, the present invention provides a pool cleaning machine, which includes a housing, a driving device capable of driving the cleaning machine to move forward and backward, a control device connected to the driving device and a cleaning device, the characteristics of which are that the driving device Provides a secondary speed for entering the water, allowing the machine to expel air from the housing during entry; said drive also provides a primary speed for work, allowing the machine to run at the bottom of the pool at said primary speed and sidewall parades.

In the above pool cleaning machine, the control device includes a microprocessor, and the pre-programmed program in the microprocessor is used to control the forward speed and direction of the pool cleaning machine.

The control device in the above pool cleaning machine further includes a time switch, and the time switch sends a signal to the microprocessor to control the time that the cleaning machine travels at the secondary speed during the water entry process.

The microprocessor in the pool cleaning machine above includes a time switch.

In the above-mentioned pool cleaning machine, the control device further includes a buoyancy switch installed on the housing, and after the cleaning machine exposes the water surface along the side wall of the pool, the buoyancy switch sends a signal to the microprocessor and A time switch, the microprocessor controls the driving device to make the cleaning machine travel in the opposite direction at the secondary speed to return to the water; the time switch sends a signal after the preset time to make the driving device Drive the cleaner at the stated primary speed instead.

The above-mentioned pool cleaning machine is characterized in that the control device also includes a position switch, and after the cleaning machine changes from the state of moving horizontally along the bottom of the pool to the state of moving vertically along the side wall of the pool, the position switch sends a signal to The microprocessor and time switch.

The above pool cleaning machine is characterized in that the position switch is a mercury switch or a pendulum switch.

The pool cleaning machine above is characterized in that said secondary speed is 1.2 to 4.6 meters per minute and said primary speed is 7.3 to 15 meters per minute.

In order to better achieve the purpose of the present invention, the present invention also provides a method for cleaning a pool using a pool cleaning machine. The cleaning machine includes a housing, a driving device, a control device connected to the driving device, and a cleaning device. It is characterized in that it includes : step one, the driving device drives the cleaning machine to enter water along the side wall of the pool at a secondary speed; step two, use the time switch to control the travel time of the cleaning machine at the secondary speed; step three, after reaching the predetermined time of the time switch , the cleaning machine cruises along the bottom and side walls of the pool at the main speed under the control of the cleaning machine's control device.

The step three in the above method further includes: if the cleaning machine emerges from the water surface, the cleaning machine travels in the opposite direction at a secondary speed, and performs step two.

The third step in the above method further includes: the cleaning machine travels along the water surface scum line on the side of the pool to clean the water surface scum.

In the method described above, the secondary speed is sufficient to force out air trapped in the machine housing by the water while the machine maintains effective contact with the side walls of the pool, and the primary speed is faster than the secondary speed.

The secondary speed in the above method is 1.2 to 4.6 meters per minute, and the primary speed is 7.3 to 15 meters per minute.

The above-mentioned method for cleaning a pool by using a pool cleaning machine is characterized in that the predetermined time is 5 to 15 seconds.

The above method further includes sending a control signal through a position switch provided in the control device when the position of the cleaning machine is changed from approximately horizontal to vertical, and performing step 2.

The above method further includes executing step 2 after a predetermined delay time after the position switch sends the control signal.

In another embodiment of the present invention, a method of cleaning a pool using a pool cleaning machine includes the steps of:

a. Control a pool cleaning machine including the housing, and a drive device capable of driving the cleaning machine forward and backward, and having a time switch;

b. When the cleaning machine is placed in the operating position in the pool, start the cleaning machine;

c. Make the cleaning machine travel the length of the pool forward at the main speed at the bottom of the pool until the cleaning machine reaches the wall of the pool;

d. Make the cleaning machine climb up the wall to the water surface of the pool;

e. Send a control signal when the pool cleaner is in a vertical position on the pool wall;

f. In response to the control signal, start the time switch;

g. When the cleaning machine reaches the water surface of the pool, slow down the cleaning machine from the primary speed to the secondary speed;

h. Make the cleaning machine operate at the secondary speed for a predetermined operating time;

i. Cause the cleaner to climb down the wall from the surface of the pool at a secondary speed so that air trapped in the cleaner enclosure will be forced out by the pool water; and

j. After operating the cleaning machine at the secondary speed for a predetermined operating time, change the speed to the primary speed.

k. Make the pool cleaner patrol the bottom of the pool and climb up the wall at the main speed;

l. Change speed to the secondary speed when the pool cleaner reaches the surface of the pool and operate at the secondary speed for a predetermined period of time;

m. Make the cleaning machine climb down the wall at a secondary speed;

n. Change the speed to the primary speed after operating the cleaning machine at the secondary speed for a predetermined period of operation; and

Repeat steps (c) to (n).

In a specific embodiment of the present invention, a pool cleaning machine is provided to clean the bottom and walls of the pool, which is composed of the following devices: a driving device that can drive the cleaning machine forward and in the opposite direction; and a control device , is electrically connected with the driving device, so that the cleaning machine can operate at a primary speed and a secondary speed, and the secondary speed is slower than the primary speed. It is used when the cleaning machine starts to climb down the wall after reaching the water surface. The second application The time to speed is based on a pre-designed best practice. The time of operation at the secondary speed is a fraction of the total cleaning program time.

The components of the pool cleaning machine of the present invention include a shell and a driving device, which can drive the cleaning machine forward and backward, and receive signals from the control device to patrol at normal and slow speeds. When the pool cleaner climbs down the wall from the water surface, the control device can slow down the drive unit to lower, so that the air trapped in the cleaner can be expelled from the cleaner's shell, and the cleaner can maintain the contact with the wall required for cleaning operation.

In a more preferred embodiment, the pool cleaning machine's control unit, including a microprocessor, is programmed to operate at a slower speed for a specified amount of time when the pool cleaning machine is activated. This initial specific time, when the cleaner is placed against the wall and started to start, provides enough time for the air trapped in the cleaner compartment to be forced out. After this, the control unit sends a signal to the drive unit to increase the speed to the primary speed, and then slow down to the secondary speed when the cleaning machine cruises to the other side of the wall and climbs up, reaches the water surface and begins to descend.

When the cleaning machine reaches the water surface and reverses, the speed is greatly reduced to the secondary speed, which can be triggered by the signal generated by the corresponding event. One such event is when the pool cleaning machine travels in an approximately horizontal orientation to the bottom of the pool and changes to an approximately vertical orientation climbing upwards upon reaching the wall. A switch can generate a signal according to the cleaning machine turning horizontal to vertical, for example using a mercury switch or a pendulum switch. Another event is to generate a signal when the front portion of the pool cleaner leaves the water, for example using a buoyancy switch. The control signal is first transmitted from the event switch to a time switch, and then the time switch transmits the signal to the microprocessor, and the processor controls the driving direction and speed of the driving device. The time switch can be set in the control device, electrically connected with the microprocessor, and send a signal to the microprocessor, and can also be included in the microprocessor, and the action of the time switch can be achieved by using the interrupt function in the microprocessor.

In a better embodiment, the pool cleaner runs horizontally across the level of the wall to clean accumulated scum and dirt from the scum line. The cleaner can use a higher primary speed to traverse horizontally, or a slower secondary speed. But when starting to climb down after traversing, the cleaner lands at a slower secondary speed. The slower secondary speed is set with an approximation. The purpose is to make the air trapped in the casing due to the cleaning machine operating above the water surface be discharged as soon as possible when the cleaning machine is lowered, so that the cleaning function can be improved. Maintain neutral buoyancy and contact with the wall to continue cleaning.

In a particularly preferred embodiment, the microprocessor of the pool cleaning vehicle is programmed to operate the vehicle at a slower secondary speed when the vehicle is initially activated. Usually when the operator starts to use the cleaning machine, he will put down the cleaning machine from the ground, hold the handle, put the cleaning machine down vertically and close to the wall, and turn on the power. The speed falls downwards, which is an important function, because it is able to force out the air trapped in the cleaning machine compartment. In this embodiment, the microprocessor is programmed to operate the drive at the slower secondary speed for a predetermined period of time when the cleaning machine is initially activated, before commencing operation at the primary speed. This preset starting time of operating at a slower speed can be determined according to the size and structure of the pool cleaning machine. Generally speaking, this time is about five to fifteen seconds.

In order to simplify the design, manufacture and microprocessor programming of the cleaning machine, and to achieve the design purpose, the start-up time of the cleaning machine is operated at a secondary speed, which is to be set to provide enough time to leave the cleaning machine As mentioned above, it takes about five to fifteen seconds for the air in the gap to be squeezed out. This time is the design data that affects the time due to the operating characteristics of the cleaning machine, the design of the shell, and the position of the water inlet and outlet at the bottom.

In order to achieve a faster time to complete cleaning the entire pool, the cleaner should operate at the higher primary speed as much as possible and at the slower secondary speed as little as possible. However, in order to be able to design a pool suitable for general purpose designs, the length of operation time at start-up of a pool cleaning machine that can be used by the most customers needs to provide a start-up operation time to adapt to different popular pool designs on the market. And the cleaning machine can use a secondary speed when climbing down the wall, which can improve the efficiency of cleaning the contact area.

An even better feature is the ability to corner around the pool, ie from one wall of the pool to the adjacent wall, when the pool cleaner can clean the horizontal line (scum line) at a faster main speed. The pool cleaning machine can patrol the wall horizontally at high speed to achieve greater momentum and traction. When it reaches another wall, it can follow the wall and turn to continue cleaning the scum line of the other wall.

In summary, it can be seen that the technical effects of the present invention are:

The pool cleaning machine provided by the present invention can enter the water at a slower secondary speed, which can effectively remove air and maintain its neutral buoyancy throughout the cleaning process; the cleaning machine of the present invention works at a faster primary speed, thereby reducing the overall cleaning speed The operating time of the pool allows for faster cleaning of the pool. The apparatus and method of the present invention also provides quick cleaning of pool scum lines.

Specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is the structural representation of the pool cleaning machine of prior art;

Fig. 2 is the working flow diagram of the pool cleaning machine of the prior art;

Fig. 3 is a schematic structural view of a pool cleaning machine according to an embodiment of the present invention;

Fig. 4 is the cleaning method flow chart of above-mentioned embodiment of the present invention;

Fig. 5 is a schematic diagram of the installation position of the buoyancy switch of the pool cleaning machine provided by the present invention;

Fig. 6A is a schematic diagram of the buoyancy switch in a horizontal position;

Figure 6B is a schematic diagram of the buoyancy switch in a vertical position;

Fig. 7 is the flowchart of another embodiment of the inventive method;

Fig. 8 is a design block diagram of the present invention.

Detailed ways

Pool cleaning machine of the present invention is designed as follows:

A pool cleaner consists of: a drive unit that transmits drive power to a pair of rolling cleaning brushes from a DC motor via pulleys and belts; and a control unit that sends signals from a programmed microprocessor. When the pool cleaner is on the bottom of the pool, the cleaner travels at a prime speed of about 9.1 meters per minute. A mercury switch mounted in the pool cleaner housing sends a signal to another time switch; this time switch is signally linked to the microprocessor. In a better embodiment, the time switch becomes part of the microprocessor. When the pool cleaner is in the operating position on the bottom of the pool, the mercury switch is off. When the pool cleaner is vertical or in the operating position on the pool wall, the mercury switch moves synchronously with the pool cleaner housing, is in the on state and sends a signal to the time switch.

The pool cleaner continues to climb up the wall, and when the cleaner reaches the water level, it starts to crawl horizontally on the scum line to clean the dross. A preferred specific design, the time switch sends a signal between about ten to thirty seconds randomly determined, so that the drive mechanism stops the cleaning machine and climbs down the wall at a slower secondary speed. As the cleaner climbs down, air trapped in the cleaner compartment is forced out, keeping the cleaner in contact with the wall for operation. The cleaning machine reaches the bottom of the pool and cruises at the secondary speed. When the time switch generates a signal to the microprocessor according to the predetermined time, the microprocessor controls the DC motor to accelerate to the primary speed of about 9.1 meters per minute, which is about Traveling at twice the secondary speed, the pool cleaner rapidly traverses the length of the pool, climbs up the walls, cleans the scum line at a randomly determined Climb down the wall, reach the bottom of the pool and start a different route from the previous route to patrol and clean.

A preferred embodiment of the above-mentioned pool cleaning machine is shown in Figure 3, comprising a housing 10, a drive unit 5, and a control unit 13. The control unit includes a microprocessor and one or more time switches 12, and is received by a group of about Buoyancy switches 11a and 11b at both ends of the length axis of the housing 10, and a position switch 14 mounted approximately at the bottom of the housing, such as mercury switches or pendulum switches. The positions of the switches 11a and 11b are installed on the top of the pool wall when the pool cleaning machine climbs up to the top of the pool wall. When the front end of the cleaning machine is exposed to the water surface, the relevant buoyancy switch generates a signal to the control device. The position switch 14 generates a signal to the control unit when the cleaning machine changes from an approximately horizontal position to an approximately vertical position.

When the control unit receives a signal from the switch 11a, 11b or 14, the control unit determines when and how to control the drive unit according to the operating position of the pool cleaner when the signal is sent to the control unit. If the cleaning machine is in the upward climbing wall position and 11a or 11b sends a signal, the control device sends a signal to make the driving device change the forward direction to be the opposite direction, change the speed to be the secondary speed and start the time switch.

The driving device includes a DC motor which transmits driving force to a pair of rolling cleaning brushes 6a and 6b via pulleys and belts.

The working flow of the above-mentioned pool cleaning machine is shown in FIG. 4. When the pool cleaning machine is started, the cleaning machine operates at the secondary speed for a predetermined operating time. According to this predetermined time, the time switch sends a signal to the driving device to change to operate at the main speed after the time expires. The pool cleaner advances at the primary speed until a position change switch, such as a mercury switch or a pendulum switch, activates the time switch when the cleaner changes from a horizontal position to a vertical position, and when the time has elapsed for a predetermined delay, controls the drive at the secondary speed Advance and activate the time switch to the scheduled operating time. When the buoyancy switch sends a signal because part of the shell of the cleaning machine is exposed to the water surface, the control device controls the driving device to change the forward direction to the opposite direction. Repeat the above and wait for the completion of the predetermined operation time. The time-varying drive moves forward at the main speed.

Specifically include the following steps:

Step 401, start the pool cleaning machine to move forward at the secondary speed;

Step 402, the time switch controls the operation time of the secondary speed;

Step 403, judging whether the operation time has come, if yes, execute step 404, otherwise execute step 403;

Step 404, climbing down or up the pool wall or cruising at the bottom of the pool at the main speed;

Step 405, judging whether the position of the cleaning machine has horizontal/vertical conversion, if yes, execute step 406, otherwise execute step 405;

Step 406, the time switch starts to calculate the delay time;

Step 407, judging whether the predetermined delay time has arrived, if yes, execute step 408, otherwise execute step 407;

Step 408, the driving device advances at the secondary speed, and activates the time switch to control the operating time of the secondary speed;

Step 409, judging whether the front end of the cleaning machine is exposed to the water surface, if yes, execute step 410, otherwise execute step 409;

Step 410 , the driving device advances in the opposite direction, go to step 402 .

Fig. 5 is another preferred embodiment of the pool cleaning machine of the present invention. The pool cleaning machine includes a housing 10, and a driving device 5 receives the buoyancy switches 11a and 11b installed approximately at both ends of the length axis of the housing 10. The position of the signal, switches 11a and 11b is installed on the opposite side when the pool cleaner climbs up to the top of the pool wall. When the front end of the cleaner is exposed to the water, the relevant buoyancy switch can generate a signal to drive the drive in the opposite direction and at the secondary speed. Climb down.

6A and 6B are two different positions and environments of the buoyancy switch. The length axis of the buoyancy switch shown in FIG. 6A is approximately at a horizontal position, including the casing 20 , which includes a plurality of water holes to allow the liquid to circulate freely inside and outside the casing. There is a floating body 21 in the switch, and the floating body shell is sealed, and about half of the space in the inside is air, so that the density of the floating body is much lower than that of the pool water. When the entire buoyancy switch is immersed under the water surface 25 , the floating body 21 floats on the highest position in the shell 20 . The contacts 22a and 22b connected to the housing 20 are not energized. The length axis of the buoyancy switch shown in Fig. 6B is approximately at a vertical position, and is partially exposed to the water surface 25'. Because the casing 20 has a plurality of water holes, the pool water in the switch flows out, and the floating body falls because it is not subjected to the buoyancy of the pool water and the gravity, so that the contact pieces 22a and 22b are energized to generate signals.

FIG. 7 is a program flow chart of the above-mentioned embodiment. When the pool cleaning machine is activated, the machine operates at the secondary speed for a predetermined time of operation. The time switch sends a signal to the drive to operate at the main speed according to this predetermined time. The pool cleaner advances at the primary speed until part of the casing is exposed to the surface of the water, so that the buoyancy switch or other similar switch sends a signal to the control device, the control device activates the time switch and controls the driving device to change the forward direction to the opposite direction and operate at the secondary speed; at the same time Repeat until the wait time switch signals at the scheduled operating time.

Specifically include:

Step 701, start the pool cleaning machine to move forward at the secondary speed;

Step 702, the time switch controls the operation time of the secondary speed;

Step 703, judging whether the scheduled operation time has arrived, if yes, execute step 704, otherwise execute step 703;

Step 704, climbing down or up the pool wall or cruising at the bottom of the pool at the main speed;

Step 705, judging whether the front end of the cleaning machine is above the water surface, if yes, execute step 706, otherwise execute step 705;

In step 706, the driving device advances in the opposite direction, and then go to step 702.

FIG. 8 is a design block diagram of the present invention, including a power supply device, a control device, a driving device and various switches. 801 is a power supply device, which provides power to the whole pool cleaning machine. The power supply device includes a buoyancy wire connected to a floating water shell, a built-in dry battery, or leads to a transformer placed in the floating water shell or at the edge of the pool. The 807 power switch is to issue a start or close latch signal. 802 position switch, when the cleaning machine changes from the horizontal position to the vertical position, it sends out a signal. 803 buoyancy switch, when the front position of the cleaning machine is out of the water, it sends out a signal. The 805 time switch, according to the delay time data sent by the control device, when the scheduled delay time arrives, sends a signal to notify the control device that the time has arrived. 804 The control device sends a signal to control the driving device 806 according to the signals received from 807, 802, 803 and 805, and sends the delay time data to the 805 time switch. The signal to the drive means 805 includes going in the current direction at the primary speed, going in the current direction at the secondary speed, and going in the current opposite direction at the current speed. 806 The driving device is powered by the power supply device 801 , and changes the forward direction or speed according to the signal sent by the control device 804 .

Therefore, it can be seen from the above that the automatic pool cleaning machine of the present invention utilizes the program-controlled and electrically driven pool cleaning machine to cruise in a specific direction at the bottom of the pool and climb on the wall until the front end of the pool cleaning machine is at a height on the surface of the pool. After that, the driving part of the cleaning machine is reverse-driven, so that the pool cleaning machine advances in the opposite direction and climbs down from the vertical wall to reach the bottom of the pool; Repeat to cruise in an approximately horizontal direction. Using several different structural devices and including electrical or mechanical devices to cooperate with a programmable controller provided by a microprocessor, the pool cleaning machine of the present invention patrols the bottom of the pool with a constantly changing route within a specific pattern , and crawl up and down when reaching the pool walls until all areas within the entire pool are cleaned. The pool cleaning machine of the present invention can also clean the 'scum line' horizontally and horizontally on the wall of the pool; the so-called scum line is usually the connecting line at the junction of the wall and the water surface.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the implementation scope of the present invention; all equivalent changes and modifications made according to the present invention are covered by the patent scope of the present invention.

Claims (27)

1. A pool cleaning machine, comprising a shell; A driving device, which can drive the cleaning machine to move forward and backward; a control device connected to the drive device; and The cleaning device is used to clean the water surface and the pool wall of the pool; it is characterized in that, said drive means provides a secondary speed for entering the water, enabling the cleaner to expel air from the enclosure during the entry into the water; The drive unit also provides a primary speed for operation at which the cleaning machine travels over the bottom and side walls of the pool. 2. The pool cleaning machine according to claim 1, wherein the control device includes a microprocessor, and the microprocessor is provided with a pre-programmed program for controlling the forward speed of the pool cleaning machine and directions. 3. The pool cleaning machine of claim 2, wherein said control device further includes a time switch that sends a signal to the microprocessor to control the machine to operate at said secondary speed during entry into the water. travel time. 4. The pool cleaning vehicle of claim 2, wherein said microprocessor includes a time switch. 5. The pool cleaning machine according to claim 3 or 4, characterized in that the control device further includes a buoyancy switch installed on the casing, after the cleaning machine is exposed to the water surface along the side wall of the pool, the The buoyancy switch sends a signal to the microprocessor and a time switch, and the microprocessor controls the drive so that the cleaner travels in the opposite direction at the secondary speed to return to the water; the time switch reaches a predetermined After a period of time, a signal is sent to change the driving means to drive the cleaning machine at the main speed. 6. The pool cleaning machine according to claim 5, wherein the control device further includes a position switch, and after the cleaning machine changes from a horizontal running state to a vertical running state, the position switch sends a signal to the Microprocessor and time switch. 7. The pool cleaning machine of claim 6, wherein the position switch is a mercury switch or a pendulum switch. 8. The pool cleaning vehicle of claim 1 wherein said secondary speed is 1.2 to 4.6 meters per minute. 9. The pool cleaning vehicle of claim 1 wherein said primary speed is 7.3 to 15 meters per minute. 10. A method of cleaning a pool using a pool cleaning machine, the cleaning machine comprising a housing, a driving device, a control device connected to the driving device, and a cleaning device, characterized in that the method comprises: Step 1, the driving device drives the cleaning machine to enter the water along the side wall of the pool at a secondary speed; Step 2, using the time switch arranged in the control device to control the travel time of the secondary speed of the cleaning machine; Step 3: After the predetermined time of the time switch is reached, the cleaning machine cruises along the bottom and side walls of the pool at the main speed under the control of the control device of the cleaning machine. 11. The method according to claim 10, wherein said step 3 further comprises: if the cleaning machine is out of the water, sending a control signal to make the cleaning machine move in the opposite direction at a secondary speed, and performing step 2. 12. The method for cleaning a pool with a pool cleaning machine according to claim 10, wherein the third step further comprises: the cleaning machine travels along the water surface scum line on the side of the pool to clean the water surface scum. 13. The method of claim 10, wherein the predetermined time of the time switch is sufficient for the pool cleaning vehicle to climb down from the horizontal line to the bottom of the pool. 14. The method according to claim 13, characterized in that the predetermined time is 5-15 seconds. 15. The method of claim 12, wherein said cleaning machine is advanced at a prevailing speed as said machine travels along a scum line on the surface of the pool wall. 16. The method of claim 10, wherein said secondary velocity is sufficient to force air trapped within the enclosure of the cleaner to be forced out by the water while the cleaner remains in effective contact with the sides of the pool, and said primary The speed is faster than the secondary speed. 17. The method of claim 16, wherein the secondary speed is 1.2 to 4.6 meters per minute. 18. A method according to claim 16, characterized in that said prevailing speed is 7.3 to 15 meters per minute. 19. The method according to claim 10, further comprising: when the position of the cleaning machine is changed from approximately horizontal to vertical, using a position switch provided in the control device to send a control signal, and performing step 2 . 20. The method according to claim 19, further comprising the position switch sending a control signal, and performing step 2 after a predetermined delay time. 21. A method of cleaning a pool using a pool cleaning machine, the method comprising: a. Control a pool cleaning machine including the housing, and a drive device capable of driving the cleaning machine forward and backward, and having a time switch; b. When the cleaning machine is placed in the operating position in the pool, start the cleaning machine; c. Make the cleaning machine travel the length of the pool forward at the main speed at the bottom of the pool until the cleaning machine reaches the wall of the pool; d. Make the cleaning machine climb up the wall to the water surface of the pool; e. Send a control signal when the pool cleaner is in a vertical position on the pool wall; f. In response to the control signal, start the time switch; g. When the cleaning machine reaches the water surface of the pool, slow down the cleaning machine from the primary speed to the secondary speed; h. Make the cleaning machine operate at the secondary speed for a predetermined operating time; i. Cause the cleaner to climb down the wall from the surface of the pool at a secondary speed so that air trapped in the cleaner enclosure will be forced out by the pool water; and j. Make the cleaning machine operate at the secondary speed for a predetermined operating time, then change the speed to the primary speed; k. Make the pool cleaner patrol the bottom of the pool and climb up the wall at the main speed; l. When the pool cleaner reaches the surface of the pool, change speed to the secondary speed and operate at the secondary speed for a predetermined period of time; m. Make the cleaning machine climb down the wall at a secondary speed; n. Change the speed to the primary speed after operating the cleaning machine at the secondary speed for a predetermined period of operation; and o. Repeat steps c to n. 22. The method of cleaning a pool with a pool cleaning machine as recited in claim 21, said method further comprising the step of: When the cleaning machine is activated, operate the cleaning machine at the secondary speed for a predetermined start-up time; and When the scheduled start time expires, the pool cleaning machine is caused to operate at the prime speed. 23. The method of claim 21, wherein said predetermined time of operation at the secondary speed in steps h, j, 1 and n is sufficient for said pool cleaning vehicle to climb down from level to pool bottom. 24. The method of claim 23 wherein said predetermined start time is equal to said predetermined time of operation at secondary speed. 25. The method of claim 23, wherein said predetermined time to operate at the secondary speed is 5 to 15 seconds. 26. The method of claim 21 wherein said secondary speed is 1.2 to 4.6 meters per minute. 27. The method of claim 21, wherein said prevailing speed is 7.3 to 15 meters per minute.

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