JP4141827B2 - Carpet cleaner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a carpet cleaner for cleaning a carpet with high-temperature, high-pressure steam (washing water).
[0002]
[Prior art]
As for the basic structure of the carpet cleaner, a structure as described in Patent Document 1, for example, has been known.
[0003]
[Patent Document 1]
JP-A-11-99111 [0004]
According to the carpet cleaner described in Patent Document 1, high-temperature and high-pressure washing water pressurized by an electric pump and heated by a heater is jetted and washed from the jet nozzle toward the carpet. The sewage after the cleaning is sucked by the powerful suction action of the vacuum pump exerted on the suction port of the vacuum head, and is collected in the recovery tank.
[0005]
[Problems to be solved by the invention]
However, in the carpet cleaner described in Patent Document 1, a non-self-contained pump is used as an electric pump from the viewpoint of price, and the non-self-contained electric pump is provided on the lower side of the tank. However, as shown in the drawing of Patent Document 1, when a long hose or injection nozzle is connected to the discharge side of the pump and resistance is high, the tank is filled with cleaning water. After that, when the washing water is sent out by the electric pump, it may be necessary to forcibly discharge the air remaining in the pump by injecting priming water into the electric pump. In other words, when air is present in the electric pump at the start of the pumping operation, even if the tank is filled with cleaning water, the pump operation cannot be performed normally. There was annoyance that had to be done.
[0006]
Therefore, the technical problem of the present invention is that when the washing water filled in the tank is sent to the injection nozzle using the non-self-contained electric pump for injection, the non-self-contained electric pump is automatically used without performing troublesome priming water. The carpet cleaner is devised so that the washing water pressurized by the spray nozzle can be quickly supplied to the spray nozzle by pressurized water supply.
[0007]
Still another technical problem of the present invention is to provide a carpet cleaner configured to be able to switch the pressure of the washing water sprayed from the spray nozzle by the electric pump in two stages.
[0008]
[Means for Solving the Problems]
(1) In order to solve the above technical problem, in the carpet cleaner according to the present invention, as described in the first aspect, the non-self-contained electric pump in which the cleaning water in the tank is provided on the lower side of the tank. A carpet cleaner configured to spray and wash the carpet from the spray nozzle toward the carpet, and suck the sewage by suctioning the suction port.
The electric pump and heater are connected to the discharge side of the electric pump by connecting a water supply pipe with a tip connected to the injection nozzle side and a heater for heating the wash water sent to the middle to a high temperature. An electromagnetic on-off valve is attached in the middle of the water supply pipe between the pipe and the circulation pipe with the tip connected to the tank side branched , and the electric pump and electromagnetic on-off valve are used to drive the electric pump. When the electromagnetic on-off valve is opened first, the current value of the motor that drives the electric pump reaches a predetermined value within a predetermined time, and the state is continuously detected for a predetermined time or more, The electromagnetic on-off valve is closed, and a control unit having means for continuing to drive the electric pump is provided.
[0009]
(2) Further, according to the carpet cleaner of the present invention, the cleaning water in the tank is sprayed from the spray nozzle toward the carpet by the non-self-contained electric pump provided on the lower side of the tank. A carpet cleaner configured to suck and wash the sewage with a vacuum acting on the suction port,
The electric pump and heater are connected to the discharge side of the electric pump by connecting a water supply pipe with a tip connected to the injection nozzle side and a heater for heating the wash water sent to the middle to a high temperature. An electromagnetic on-off valve is attached in the middle of the water supply pipe part between the two and a circulation pipe having a tip connected to the tank side is branched , and the electric pump and the control part of the electromagnetic on-off valve include an electric pump When the high pressure water supply operation is selected, the current value of the motor that drives the electric pump becomes a predetermined value within a predetermined time when the high pressure water supply operation is selected. And when the state is detected continuously for a predetermined time or longer, the electromagnetic on-off valve is closed and the electric pump continues to be driven while the low pressure water supply operation is selected. To the above electric When the current value of the motor that drives the motor reaches a predetermined value and the state is detected continuously for a predetermined time or longer, the electric pump continues to be driven while the electromagnetic on-off valve is kept open. The water supply pressure control means is provided.
[0010]
According to the means described in the above (1) , the carpet can be cleaned cleanly by high temperature and high pressure steam by spraying the cleaning water heated to a high temperature by the heater. When starting to drive the electric pump, the electromagnetic on-off valve is first opened, so that the air in the pump is released into the tank through the electromagnetic on-off valve by the pump electric motor. When air is released and the pump is filled with cleaning water, the rotational load of the pump motor increases, the value of the current flowing through the pump motor rises to a predetermined value, and the electromagnetic on-off valve is closed. Thereafter, the high-pressure cleaning water is sent out to the spray nozzle. Therefore, according to the above configuration, it is possible to automatically wash the washing water in the tank from the injection nozzle toward the carpet at a high pressure without pouring the priming water from the start. In addition, according to the means described in the above (1), when the above air is vented, normal temperature washing water before being heated to a high temperature by the heater can be sent to the tank side through the circulation pipe, so that the air can be vented. In addition, it is possible to prevent the electromagnetic on-off valve from malfunctioning or malfunctioning due to washing water heated to a high temperature.
[0011]
According to the means described in (2) above , the carpet can be cleaned cleanly by high-temperature and high-pressure steam as in the above-mentioned means (1), but in particular, high-pressure water supply operation and low-pressure water supply operation can be selected. When a high-pressure water supply, the motor current value for driving the pump reaches a predetermined value and the state is continuously detected for a predetermined time or more, an electromagnetic on-off valve is provided. When the low-pressure operation, the motor current value for driving the pump reaches a predetermined value, and the state is continuously detected for a predetermined time or longer, the electromagnetic on-off valve is turned on. Since the pump drive is continued while the open state is maintained, the air venting and the high pressure and low pressure water supply operations can be performed with a single electromagnetic on-off valve. In addition, according to the means described in (2) above, when the air is vented, it is possible to vent the air by sending normal temperature washing water before being heated to a high temperature by the heater to the tank side through the circulation pipe. In addition, it is possible to prevent the electromagnetic on-off valve from malfunctioning or malfunctioning due to washing water heated to a high temperature.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the embodiment of the carpet cleaner according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of the entire carpet cleaner, in which 1 is the body of the carpet cleaner, and 1A. 1B is a cleaning water supply tank and a cleaning sewage recovery tank, CW and DW are cleaning water and sewage stored and recovered in the interiors 1X and 1Y of these tanks 1A and 1B, respectively, and E is a cleaning water CW containing detergent. The container used when water is supplied.
[0013]
Further, 2P is provided on the lower side of the supply tank 1A, and the cleaning water CW taken from the intake port 2S provided on the inner bottom of the tank 1A is configured by using a flexible hose. 4 is a non-self-contained electric pump (hereinafter simply referred to as an electric pump) for supplying high pressure to the heater, and 4 is a heater that is detachably attached to the peripheral surface of the root end 3A side of the water supply pipe 3 and is housed in the water supply tank 1A. The washing water CW becomes high-temperature and high-pressure washing water of about 80 ° C. at the maximum by the electric pump 2P and the heater 4, and then steam water is supplied to the tip 3S of the water supply pipe 3 as shown in FIG. A manifold tube 3X connected in communication via the tube 3Xa and a plurality of injection nozzles 3N attached by fitting a neck portion 3Na to the bottom surface of the manifold tube 3X are each formed in a fan shape as indicated by reference numeral CWa. Equal It has a mechanism that is vigorously injected toward the carpet T.
[0014]
Also in FIG. 1, 6 is a vacuum pump, 6T is a vacuum cylinder that exerts a strong vacuum force (suction force) by the vacuum pump 6 on the inside 1Y of the above-described recovery tank 1B, and 6A is at the upper end of this vacuum cylinder 6T. The automatic water absorption stop device 5 attached is a pipe-shaped hand member having a root end portion 5A connected to the above-described recovery tank 1B and a vacuum head 5T provided at the tip end, and the strong force generated in the recovery tank 1B. As shown in the cross-sectional view of FIG. 2, the above-described vacuum nozzle acts through the hand member 5 to the vacuum head 5T at the tip, and is cleaned by the high-temperature and high-pressure cleaning water CWa sprayed from the spray nozzle 3N toward the carpet T as described above. The sewage DW after being collected is sucked and collected from the suction port 5D into the collection tank 1B with its strong suction force.
[0015]
In FIGS. 1 and 2, 9 is a cover body containing the above-mentioned injection nozzle 3N, 9H is an outside air inlet provided in the cover body 9, 3H... A band to be fixed, 3V is an opening / closing valve provided in the middle of the water supply pipe 3, 3L is a wind lever for opening / closing the opening / closing valve 3V, 7 is a shielding plate for air / water separation provided in the recovery tank 1B, 8 is A drain valve, F, indicates a container for collecting sewage.
[0016]
In FIG. 2, 5Tc and 5Dc are the lower end contact surfaces on the outer side and the inner side of the suction port 5D.
[0017]
In the configuration as described above, the vacuum pump 6 is driven and rotated to apply a strong vacuum force to the suction port 5D of the vacuum head 5T, while driving the electric pump 2P and holding the wind lever 3L to open and close the valve 3V. 2, the high-temperature and high-pressure washing water heated to about 80 ° C. passes through the water supply pipe 3 and the interior 3XT of the manifold pipe 3X as shown in FIG. 3N... Is sprayed vigorously as indicated by symbol CWa to wash the carpet T, while the sewage DW generated by this washing is sucked from the suction port 5D of the vacuum head 5T and collected in the collection tank 1B. It is structured to do.
[0018]
The present invention is applied to the carpet cleaner configured as described above. In FIG. 1, 3K is the root end portion 3A side of the water supply pipe 3, and the electric pump 2P and the heater. 4 is a circulation pipe that is branched and connected to the portion of the water supply pipe 3 between 4 and the tip side of the circulation pipe 3K to which an electromagnetic on-off valve 10T is attached is connected or communicated with the water supply tank 1A.
[0019]
Further, in FIG. 1, 11 is a control panel for controlling the operation of the electromagnetic on-off valve 10T and the electric pump 2P, 12 is an operation panel, and these control panel 11 and operation panel 12 are provided on the body 1 side. It has been. FIG. 3 shows an example of the operation panel 12, in which 13L is a power indicator lamp, 14L is a vacuum pump 6 indicator lamp, 14S is an ON / OFF switch (button), 15L Reference numeral 16L denotes display lamps for high-pressure water supply operation and low-pressure water supply operation of the electric pump 2P, and 15S and 16S denote ON / OFF switches (buttons) for high-pressure water supply operation and low-pressure water supply operation.
[0020]
FIG. 4 is a block diagram illustrating an example of the electrical configuration of the carpet cleaner according to the present invention described above, in which 2PM is a motor of the electric pump 2P, 11A is an ammeter connected to the motor 2PM, 11 is a control panel provided with at least the ON / OFF switches 15S and 16S for high pressure operation and low pressure operation, and an ammeter 11A for the electric pump 2P, and connected to the electromagnetic on-off valve 10T. 11, the current value of the motor 2PM that opens the electromagnetic on-off valve 10T and drives the electric pump 2P within a predetermined time prior to the driving of the electric pump 2P based on the input of a power switch (not shown). When the predetermined value is reached and the state is continuously detected for a predetermined time or longer, the electromagnetic on-off valve 10T is closed to drive the electric pump 2P. Software to continue has been incorporated to.
[0021]
Further, the control panel 11 has a current value of the motor 2PM that drives the electric pump 2P within a predetermined time during the high-pressure operation in which the high-pressure operation switch 15S is turned ON and high-pressure water supply is performed by the electric pump 2P. When the predetermined value is reached and the state is continuously detected for a predetermined time or longer, the electromagnetic on-off valve 10T is closed and the electric pump 2P is continuously driven, while the low-pressure operation switch 16S is turned on. In the low pressure operation in which the low pressure water supply is performed by the electric pump 2P, the current value of the motor 2PM reaches a predetermined value within a predetermined time, and the state is continuously detected for a predetermined time or more. In addition, software capable of continuing to drive the electric pump 2P while the electromagnetic on-off valve 10T is kept open is incorporated.
[0022]
Further, in FIG. 4, a block generally indicated by reference numeral 2 is a safety device composed of the electric pump 2P, the relief pipe 3Z and the relief valve 3W described above. 2F is a filter device for cleaning water CW. In the other members shown in FIG. 4, the same members as those shown in FIG. The explanation was omitted.
[0023]
Next, the operation of the present invention configured as described above will be described with reference to the flowcharts shown in FIGS. FIGS. 5 and 7 are flowcharts for explaining the processing operation during the water supply operation. From the standby state of step S1 where the water supply is stopped, the process proceeds to step S2 and the high pressure operation switch 15S (high pressure water supply / stop button). In step S3, the high-pressure water supply mode (water supply pressure = about 2.8 MPa) is entered. In step S4, the high-pressure water supply display lamp 15L is turned on, and then in step S5 Then, the electromagnetic on-off valve 10T is opened, and after 0.5 second has elapsed, the pump motor 2PM is actuated in step S6 to release air.
[0024]
Thereafter, the current value of the pump motor 2PM is measured by the ammeter 11A in step S7, the current value measured in step S8 reaches a predetermined current value within a predetermined time, and the state is longer than the predetermined time. If it is continuously detected, that is, if the state of the no water determination reference value continues for 5 seconds or more, the process proceeds to step S13 shown in FIG. 6, and if not, the process proceeds to step S12 and the pump motor 2PM is turned on. It is determined whether or not 30 seconds have elapsed since the power was turned on. If YES, the process proceeds to step S24 shown in FIG. 7, and if NO, the process returns to step S7.
[0025]
If NO is determined in step S2, the process proceeds to step S9 to determine whether or not the low pressure operation switch 16S (low pressure water supply / stop button) is turned on. If YES, the process proceeds to step S10. The low pressure water supply mode (water supply pressure = about 0.7 MPa) is entered, and then the low pressure water supply display lamp 16L is turned on in step S11 and the process proceeds to step S5 described above. If NO is determined in step S9, The process returns to the first step S1 and enters a standby state.
[0026]
In step S13 shown in FIG. 6, it is determined whether the currently operating mode is the high-pressure water supply mode or the low-pressure water supply mode. If the mode is the high-pressure water supply mode, the process proceeds to step S14 and the electromagnetic on-off valve 10T is closed. In step S15, it is determined whether or not the high-pressure operation switch 15S is turned on. If YES (stopped), the electromagnetic on-off valve 10T is opened to open the next step. The process proceeds to S17. If NO (in the case of continuation), the process proceeds to Step S22. If it is determined in step S13 that the low pressure water supply mode is selected, it is determined whether or not the low pressure operation switch 16S is turned on in step S21. If YES (stop), the process proceeds to step S17. Proceed, but if NO (continue), proceed to step S23.
[0027]
In the above step S17, the pump motor 2PM is stopped after 0.5 seconds, then the electromagnetic on-off valve 10T is closed 1.5 seconds after step S18, and the water supply display lamp 15L or 16L is turned off in step S19. Then, it progresses to step S20 standby state, returns to step S1 of FIG. 5, and complete | finishes a process. Further, in each of the above steps S22 and S23, whether or not the current value of the predetermined pump motor 2PM has reached a predetermined current value within a predetermined time, and whether or not the state has been continuously detected for a predetermined time or more. It is determined whether or not the state of the water-free determination reference value has continued for 2 seconds or more. If YES (in the case of insufficient washing water detection), the process proceeds to step S24 in FIG. 7, and if NO, step S15 described above is performed. Return to step S21.
[0028]
In step S24 of FIG. 7, the pump motor 2PM is turned off, and then the process proceeds to step S25, and after 1.5 seconds, the electromagnetic on-off valve 10T is closed, and then the process proceeds to step S26 where the current water supply mode is the high pressure mode. In the case of the high pressure mode, the process proceeds to step S28. In the case of the low pressure mode, the process proceeds to step S27 to flash each of the water supply display lamps 15L or 16L to notify the lack of washing water, and thereafter, step S29. It is determined whether or not the high pressure or low pressure operation switches 15S, 16S are turned off, and if YES, the process proceeds to step S30, the water supply display lamp 15L or 16L is turned off, and the standby state of step S31 is entered. Proceed to return to step S1 in FIG.
[0029]
FIG. 8 is a flowchart for explaining the operation in the case of sucking the cleaning sewage, and proceeds from the standby state in step S32 to the next step S33 to turn on / off switch 14S (suction / stop button) for vacuum pump 6 If YES is selected, the process proceeds to step S34 to enter the suction operation mode. Next, the display lamp 14L (suction lamp) is turned on, and the vacuum pump 6 (blower motor) is operated to perform cleaning. Sewage water DW is sucked. Thereafter, it is determined whether or not the ON / OFF switch 14S is turned off. If YES, the display lamp 14L is turned off in step S38, and then the operation of the vacuum pump 6 is stopped in step S39. To return to the standby state of the first step S32.
[0030]
【The invention's effect】
As described above, according to the carpet cleaner according to the present invention, it is possible to simply perform air venting without using priming water and to automatically operate the electric pump by simply controlling the operation using one electromagnetic on-off valve. In addition to being able to start, it is possible to switch the injection pressure of washing water in two stages, which can prevent the occurrence of malfunction and malfunction of the solenoid valve due to washing water heated to high temperature. As a result, it has the advantage that carpets, various cloths, floor surfaces, etc. can be cleaned quickly and cleanly.
[Brief description of the drawings]
FIG. 1 is a configuration diagram illustrating an outline of a carpet cleaner according to the present invention.
FIG. 2 is a cross-sectional view illustrating the configuration of a jet nozzle and a vacuum head.
FIG. 3 is a front view showing an example of an operation panel.
FIG. 4 is a block diagram illustrating an electrical configuration of the present invention.
FIG. 5 is a flowchart illustrating a water supply operation of the present invention.
6 is a flowchart for explaining the continuation of the flowchart shown in FIG.
7 is a flowchart for explaining the continuation of each flowchart shown in FIG. 5 and FIG. 6;
FIG. 8 is a flowchart illustrating a suction operation according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Carpet cleaner body 1A Water supply tank 1B Recovery tank 2P Non-self-powered electric pump 2PM Pump motor 3 Water supply pipe 3K Circulation pipe 3N Injection nozzle 4 Heater 5T Vacuum head 6 Vacuum pump 10T Electromagnetic switching valve 11 Control panel 11A Ammeter 15S High pressure operation Switch 16S Low pressure operation switch CW Washing water DW Washing sewage T Carpet

Claims (2)

The washing water in the tank is washed by spraying the carpet from the spray nozzle toward the carpet by a non-self-contained electric pump provided on the lower side of the tank, and sucking the washing sewage by applying a vacuum to the suction port. Carpet cleaner,
The electric pump and heater are connected to the discharge side of the electric pump by connecting a water supply pipe with a tip connected to the injection nozzle side and a heater for heating the wash water sent to the middle to a high temperature. An electromagnetic on-off valve is attached in the middle of the water supply pipe between the pipe and the circulation pipe with the tip connected to the tank side branched , and the electric pump and electromagnetic on-off valve are used to drive the electric pump. When the electromagnetic on-off valve is opened first, the current value of the motor that drives the electric pump reaches a predetermined value within a predetermined time, and the state is continuously detected for a predetermined time or more, A carpet cleaner comprising a control unit having means for closing the electromagnetic on-off valve and continuing to drive the electric pump. The washing water in the tank is washed by spraying the carpet from the spray nozzle toward the carpet by a non-self-contained electric pump provided on the lower side of the tank, and sucking the washing sewage by applying a vacuum to the suction port. Carpet cleaner,
The electric pump and heater are connected to the discharge side of the electric pump by connecting a water supply pipe with a tip connected to the injection nozzle side and a heater for heating the wash water sent to the middle to a high temperature. An electromagnetic on-off valve is attached in the middle of the water supply pipe part between the two and a circulation pipe having a tip connected to the tank side is branched , and the electric pump and the control part of the electromagnetic on-off valve include an electric pump When the high pressure water supply operation is selected, the current value of the motor that drives the electric pump becomes a predetermined value within a predetermined time when the high pressure water supply operation is selected. And when the state is detected continuously for a predetermined time or longer, the electromagnetic on-off valve is closed and the electric pump continues to be driven while the low pressure water supply operation is selected. To the above electric When the current value of the motor that drives the motor reaches a predetermined value and the state is detected continuously for a predetermined time or longer, the electric pump continues to be driven while the electromagnetic on-off valve is kept open. A carpet cleaner characterized by comprising water supply pressure control means.

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