Portable fire-extinguishing pump

Abstract

To secure appropriate portability by achieving weight reduction while enabling electric control by using an electric motor.SOLUTION: A transportable portable fire-extinguishing pump 10 for discharging fire-extinguishing water is divided into: a pump unit 12 driven by an electric motor; and a battery unit 14 which is separate from the pump unit 12 and supplies electric power to the pump unit 12. The pump unit 12 and the battery unit 14 are electrically connected to each other by electrical connection means that can be attached to and detached from the pump unit 12 and the battery unit 14, and the electrical connection means allows power supply and transmission and reception of signals for control between the pump unit 12 and the battery unit 14. The pump unit 12 is provided with casters 38 that enable movement of the pump unit 12.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an improvement to a portable fire pump that is transported to a disaster site by vehicle, removed from the vehicle, carried to a fire extinguishing location, and sprays water for extinguishing a fire, and in particular to an improvement to reduce weight and ensure appropriate portability while using an electric motor. [Background technology]

[0002] Portable fire pumps that can be transported to a fire site and used have generally been mostly engine-powered pumps (see, for example, Patent Documents 1 and 2). The main reason for this is that engine-powered pumps can be operated without securing a power source at the site as long as there is fuel such as gasoline, and the weight of the fire pump can be kept to a level suitable for portability.

[0003] However, because engine-driven fire pumps involve exhaust, they are not suitable for use in places where ventilation cannot be adequately ensured, such as indoor buildings and underground structures such as subway stations, and there have been cases where they have been unable to respond to disasters in these places. As a result, fire pumps could not be used to drain water, particularly in the case of flooding disasters in subway stations caused by heavy rains, which have become more frequent in recent years. Furthermore, with engine-driven fire pumps, pulsation occurs in the hose as the engine cycles, causing the hose to shake in the hands of the water sprayer, making it difficult to spray water at the desired location, and also causing fatigue for the water sprayer, especially when the water spraying work takes a long time.

[0004] In addition, in engine-driven fire pumps, the various valves for controlling the discharge of water are not electrically controlled, but are mechanical valves that are displaced by their own weight according to the pressure and its fluctuations, so they can only be used vertically and do not function properly when placed on their side. If the fire pump falls over, it will not be able to be used unintentionally, and in order to respond, it is necessary to set the fire pump upright again. This problem should be avoided at the scene of a disaster where urgent action is required. In addition, if fuel such as gasoline is used, the inside of the fuel tank will corrode if the fuel is left in it, so in order to respond, it is necessary to drain the fuel every time it is used, and maintenance is also time-consuming and laborious.

[0005] To address these issues, it is conceivable to use an electric motor, rather than an engine, as the driving source for portable fire pumps. However, if an electric pump is used, a battery is required as the driving source in order to allow use in places without a power source, but if a battery is used to ensure the output required for water discharge, the battery becomes very heavy, increasing the weight of the entire fire pump and making it difficult to transport by hand.

[0006] In this case, it has been proposed to use a battery mounted on the vehicle (see, for example, Patent Documents 3 and 4), but since a battery mounted on the vehicle cannot be taken out of the vehicle, a long and heavy cable is required to supply power to a location far from the vehicle, and since the cable is difficult to transport, it is not suitable for supplying power to a complicated indoor or underground location. Also, as a portable fire pump that is installed in a designated location in advance and can be handled by ordinary people at the scene in the event of an emergency, rather than being handled by a fire department or the like, there is a problem that it cannot be applied because there is not necessarily a vehicle equipped with a dedicated battery.

[0007] In addition, conventional portable fire pumps, even engine-powered pumps that can be made relatively light, require at least two people to carry them, and when an electric motor is used and the weight increases, it becomes even more difficult to carry them. Furthermore, conventional portable fire pumps are grounded at four feet on the frame after installation, so it is not easy to change the direction when changing the target of water discharge.

[0008] In addition, even if an electric motor is used, it is necessary to deal with the problem that the system heats up due to long-term operation, resulting in a decrease in operating efficiency. In this case, if air cooling is used, even if the electric motor itself is made smaller to reduce weight, the heat dissipation area needs to be increased, so the number of parts for heat dissipation fins and forced air cooling increases, and the weight of the fire pump increases, resulting in no weight reduction. On the other hand, even if a water-cooled system is used, a structure for indirectly cooling the electric motor and the controller for controlling it is required, which increases the weight and creates a problem that makes it impossible to achieve weight reduction. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] JP 2020-081719 A [Patent Document 2] Utility Model Registration No. 3234575 [Patent Document 3] Patent Publication No. 2022-123700 [Patent Document 4] JP 2018-89345 A Summary of the Invention [Problem to be solved by the invention]

[0010] In view of the above problems, the problem that the present invention aims to solve is to provide a portable fire pump that can be electrically controlled using an electric motor while achieving lightweight construction and ensuring appropriate portability. [Means for solving the problem]

[0011] (1. Weight reduction by separating the pump and battery) As a first means for solving the above problems, the present invention provides a portable fire extinguishing pump that can be transported and discharges water for extinguishing fires, the portable fire extinguishing pump being divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit, the pump unit and the battery unit being electrically connected by an electrical connection means that is detachable from the pump unit and the battery unit, and the electrical connection means enabling signals for supplying and controlling power to be sent and received between the pump unit and the battery unit.

[0012] (2. Caster) As a second means for solving the above problems, the present invention provides a portable fire extinguishing pump that can be transported and discharges water for extinguishing fires, the portable fire extinguishing pump being divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit, and the pump unit is provided with casters that enable the pump unit to be moved.

[0013] (3. Carrying handle) As a third means for solving the above problems, the present invention provides a portable fire extinguishing pump that can be transported and discharges water for extinguishing a fire, the portable fire extinguishing pump being divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit, and the pump unit is equipped with a carrying handle that can be gripped when moving the pump unit.

[0014] (3-2. Casters and carrying handle) As a fourth means for solving the above problems, the present invention provides a portable fire extinguishing pump that can be transported and discharges water for extinguishing fires, the portable fire extinguishing pump being divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit, the pump unit being provided with casters that enable the pump unit to be moved, and a carrying handle that can be held when moving the pump unit is provided.

[0015] (3-3. Detaching and attaching the carrying handle) As a fifth means for solving the above problems, the present invention provides a portable fire extinguishing pump characterized in that, in either the third or fourth solving means, the carrying handle is detachably attached to the pump unit.

[0016] (4.Water cooling) As a sixth means for solving the above problems, the present invention provides a portable fire extinguishing pump that can be transported and discharges fire extinguishing water, the portable fire extinguishing pump being divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit, the pump unit having a cooling means for cooling a controller that electrically controls the electric motor and the pump unit, and the cooling means utilizing water taken in from a source of fire extinguishing water as cooling water to water-cool the electric motor and the controller.

[0017] (4-2. Cooling jacket) As a seventh means for solving the above problems, the present invention provides a portable fire extinguishing pump that can be transported and discharges fire extinguishing water, the portable fire extinguishing pump being divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit, the pump unit having a cooling means for cooling a controller that electrically controls the electric motor and the pump unit, the cooling means having a base cooling water passage provided in a base that supports the electric motor and the controller, and a motor cooling water passage that is provided in a cooling jacket provided on the outer periphery of the electric motor and communicates with the base cooling water passage, and the electric motor and controller are water-cooled by passing water taken in from a source of fire extinguishing water through the base cooling water passage and the motor cooling water passage as cooling water.

[0018] (4-3. Attaching and detaching the motor and cooling jacket) As an eighth means for solving the above problems, the present invention provides a portable fire extinguishing pump according to the seventh solution, characterized in that the electric motor is detachably supported on a base, and the cooling jacket is detachably attached to the electric motor.

[0019] (5. Solenoid-operated check valve) As a ninth means for solving the above problems, the present invention provides a portable fire extinguishing pump that can be transported and discharges water for fire extinguishing, the portable fire extinguishing pump being divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit, and the check valve that opens and closes the fluid flow path within the pump unit is an electromagnetic valve type check valve whose opening and closing is electrically controlled.

[0020] (6. Battery level display on the pump side) As a tenth means for solving the above problems, the present invention provides a portable fire extinguishing pump that can be transported and discharges water for extinguishing fires, the portable fire extinguishing pump being divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit, the pump unit and the battery unit being electrically connected by an electrical connection means that is detachable from the pump unit and the battery unit, the electrical connection means enabling signals for supplying and controlling power to be sent and received between the pump unit and the battery unit, and the pump unit being provided with a remaining power display unit that displays the remaining power that can be supplied from the battery unit.

[0021] (7. Water absorption automation) As an eleventh means for solving the above-mentioned problems, the present invention provides a portable fire pump that can be transported and discharges fire water, the portable fire pump being divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit, the pump unit comprising a centrifugal pump that discharges fire water, and a vacuum pump that exhausts air from within the centrifugal pump, sucks up fire water from a water source for fire water, and supplies the fire water to the centrifugal pump, the vacuum pump being controlled so that when water is sucked in from the water source for fire water, power from the electric motor is transmitted by driving a solenoid by operating a water intake switch provided on the pump unit, and the vacuum pump automatically starts suctioning water.

[0022] (7-2. Operation support) As a twelfth means for solving the above problems, the present invention provides a portable fire extinguishing pump according to the eleventh means, wherein the pump unit further comprises a power switch for controlling the on and off of the power source, an open lamp for indicating that it is time to open a discharge valve that opens the centrifugal pump, and a throttle dial for controlling the rotational speed of the electric motor to control the flow rate of fire water discharged from the centrifugal pump, wherein the electric motor receives power when the power switch is turned on, the vacuum pump receives power from the electric motor by operating the water intake switch to drive a solenoid and automatically begins suctioning water, and the centrifugal pump discharges fire water at a flow rate adjusted by the throttle dial when the discharge valve is opened, and the power switch, water intake switch, open lamp and throttle dial light up in order of operation according to the process that should be operated at the moment.

[0023] (8. Electronic Lock) As a thirteenth means for solving the above-mentioned problems, the present invention provides a portable fire extinguishing pump that can be transported and discharges fire water, the portable fire extinguishing pump being divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit, the pump unit comprising: a centrifugal pump that discharges fire water by opening a discharge valve; a vacuum pump that exhausts air from within the centrifugal pump and draws up fire water from a water source for fire extinguishing water to supply the fire water to the centrifugal pump; and a throttle dial that controls the rotation speed of the electric motor to control the flow rate of fire water discharged from the centrifugal pump, the portable fire extinguishing pump further comprising a water discharge lock means that electronically restricts the rotation of the electric motor to lock the discharge of fire water when the throttle dial, which is set to be at zero when the discharge valve is in the fully closed position, is at the zero point and there is no change in the opening degree of the discharge valve even after a preset specified time has elapsed.

[0024] (9. Solar charging) As a fourteenth means for solving the above-mentioned problems, the present invention provides a portable fire extinguishing pump that can be transported and discharges water for extinguishing fires, the portable fire extinguishing pump being divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit, and the battery unit can be removably connected to a solar panel provided on a vehicle that transports the battery unit and charged.

[0025] (10. Charging with regenerative power) As a fifteenth means for solving the above problems, the present invention provides a portable fire extinguishing pump that can be transported and discharges water for extinguishing fires, the portable fire extinguishing pump being divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit, and the battery unit is capable of being charged with regenerative power generated by a vehicle transporting the battery unit. Effect of the Invention

[0026] According to the present invention, as described above, while providing a portable fire pump driven by an electric motor, the pump unit and the battery unit are both separate and can be transported by human power. This makes it possible to reduce the weight of each unit compared to a portable pump in which the pump body and the battery are integrated, and the pump can be easily transported to the disaster site by human power. As a result of making it possible to mount an electric motor on a portable fire pump in this way, no exhaust is generated, and the pump can be used in places where it is difficult to ensure sufficient ventilation, such as indoors or underground. In particular, the pump can be used as a drainage pump in the event of flooding in subway stations. At the same time, there is no pulsation in the hose when the water is discharged, so water can be accurately discharged to the desired location, and the water discharger is less fatigued, which has the practical benefits of being able to be used for long periods of time.

[0027] At the same time, according to the present invention, as described above, the battery unit is a separate entity independent of the pump unit, so that this battery unit can be used as an emergency power source to supply power to other equipment at various disaster sites, and can also be utilized as a power source for charging information and communication terminals and for lighting, which is a practical benefit.

[0028] Furthermore, by making the multiple battery packs in the battery unit detachable, the battery packs can be removed and managed when not in use, and by selectively attaching multiple battery packs, the number of battery packs can be appropriately set according to the purpose of use to adjust the power supply, and the remaining battery packs can be kept as a backup power source.

[0029] In this case, according to the present invention, as described above, a detachable electrical connection means can be used to send and receive signals for supplying and controlling power between the pump unit and a battery unit that can be transported by human power. Therefore, unlike the case in which the pump unit is connected to an onboard battery installed in a vehicle waiting at a distant location, a lightweight, short cable, etc. can be used, which makes it possible to further increase the feasibility of transporting the pump unit by human power. At the same time, there is the practical benefit of being able to send and receive control signals between the electric motor controller and the battery controller, thereby performing highly accurate electrical control and achieving accurate water discharge.

[0030] According to the present invention, as described above, casters are provided to enable the pump unit to be moved, so that the pump unit can be transported to the scene by just one person, and the direction can be easily changed depending on the location to which water is to be sprayed. This means that appropriate firefighting activities can be carried out without unnecessarily allocating large numbers of personnel, which has the practical benefit of allowing personnel to be effectively deployed to carry out efficient firefighting activities.

[0031] According to the present invention, as described above, the pump unit is fitted with a carrying handle that can be grasped when moving the pump unit, making it even easier for one person to transport it. In particular, when used in combination with casters, the pump unit can be tilted by operating the carrying handle so that only the casters are in contact with the ground and the pump unit can be transported by rotating the casters, which reduces the transport load and improves transportability, and also has the practical benefit of making it easy to change the direction of the pump unit.

[0032] In this case, particularly in the present invention, as described above, the carrying handle is removably attached to the pump unit, so that the carrying handle can be attached to the pump unit for easy operation during transportation, and can be detached from the pump unit when spraying water, which has the practical benefit of allowing firefighting activities to be carried out properly without the carrying handle interfering with operation of the pump unit or water spraying operations.

[0033] According to the present invention, as described above, there is provided a cooling means for cooling the electric motor and the controller, and since this cooling means water-cools the electric motor and the controller, unlike air-cooling which requires a structure for heat dissipation, it is possible to appropriately cool the objects without increasing weight, and since water taken from the fire-extinguishing water source is used as the cooling water, there is the practical benefit that water-cooling can be achieved without preparing cooling water in advance.

[0034] In this case, according to the present invention, as described above, the cooling means used are a base cooling water passage provided in the base that supports the electric motor and controller, and a motor cooling water passage provided in the cooling jacket provided on the outer periphery of the electric motor and communicating with the base cooling water passage. Therefore, the electric motor and controller can be cooled using only a single cooling passage, and since cooling is performed using the base, the structure for indirect cooling can be integrated with the essential structure and simplified. This suppresses the increase in weight due to the increase in the number of parts for water cooling, achieving a reduction in size and weight, and achieving water cooling without affecting portability, which has the practical benefit of ensuring manual transport while ensuring proper operation.

[0035] In this case, further according to the present invention, as described above, the electric motor is supported on the base in a manner that allows it to be freely attached and detached, and therefore can be changed or replaced by detaching it. By replacing it with an electric motor with a different output, the output of the electric motor can be changed as necessary, and in the event of a breakdown in the electric motor, only the electric motor can be replaced, which has the practical benefit of reducing maintenance costs.

[0036] In addition, in this case, according to the present invention, as described above, the cooling jacket is detachably attached to the electric motor, so that in the case of an electric motor in which the cooling jacket is integrally attached to the motor housing, if the cooling jacket corrodes or becomes clogged with sand, the cooling jacket along with the motor must be replaced, whereas if a problem occurs only with the cooling jacket, it is possible to replace only the cooling jacket or remove the cooling jacket for maintenance, which has the practical benefit of reducing the cost and effort of maintenance and inspection. In this case, of course, even if a problem occurs only with the electric motor, it is possible to remove the cooling jacket and replace only the electric motor, which has the practical benefit of reducing the cost and effort of maintenance.

[0037] According to the present invention, as described above, by achieving the installation of an electric motor in a portable fire pump and enabling various electrical controls, it is possible to use solenoid valve-type check valves whose opening and closing are electrically controlled as various check valves that open and close the fluid flow paths within the pump unit. Even if the pump unit is turned over on its side, the opening and closing of the valve can be electrically controlled to open and close appropriately. Therefore, unlike mechanical check valves, it is possible to respond to water discharge in all positions of the pump unit, including a fallen state in which the pump unit is turned over on its side. Even if the pump unit turns over during water discharge operations, there is no need to reset the pump unit, and there is the practical benefit of being able to respond quickly and appropriately at disaster sites where urgent action is required without having to consider the position of the pump unit.

[0038] According to the present invention, as described above, when separating the pump unit and the battery unit, a remaining power display unit that displays the remaining amount of power that can be supplied from the battery unit is provided on the side of the pump unit that receives power and is operated by the operator, rather than on the battery unit that supplies power. This has the practical benefit of allowing the water-discharging operator to easily check the remaining battery power without interrupting the water-discharging operation.

[0039] According to the present invention, as described above, the portable fire pump is equipped with an electric motor, enabling various electrical controls. Therefore, when the vacuum pump draws in water from the water source for fire fighting, the power from the electric motor is transmitted by operating the solenoid by operating the water intake switch provided on the pump unit, and the vacuum pump is controlled to automatically start drawing in water. This reduces the number of operating steps for starting the fire pump and makes it possible to automate the water intake work by operating only the water intake switch, thereby avoiding problems caused by incorrect operation such as forgetting to open and close the valve. This simplifies the operation of the fire pump, which is difficult for people who are not familiar with the operation, and has the practical benefit of enabling a wide range of people to respond to disasters.

[0040] In particular, in this case, according to the present invention, as described above, the power switch, water intake switch, release lamp, and throttle dial provided on the pump unit light up in the order of operation according to the process that should currently be performed, so that the operator can be guided through the operating procedures and assisted in the operation, and the operator can easily and appropriately perform water discharge operations simply by operating the corresponding switches in sequence according to the flashing or lit lights.

[0041] According to the present invention, as described above, the pump unit further includes a water discharge lock means for electronically restricting the rotation of the electric motor to lock the discharge of fire water when the throttle dial, which is set to be at zero when the discharge valve is in the fully closed position, is at the zero point and there is no change in the opening of the discharge valve even after a preset specified time has elapsed.Therefore, even if fire water is supplied to the centrifugal pump and it is left without discharging water, even if someone who is unaware of this operates the throttle dial, it is possible to prevent water discharge from starting suddenly and unintentionally, thereby ensuring the practical benefit of safety.

[0042] According to the present invention, as described above, the battery unit that can be transported by human power can be removably connected to a solar panel provided on the vehicle transporting the battery unit and charged, so that no special power source is required and the battery pack of the battery unit can be kept constantly charged when transported by vehicle. This makes it possible to avoid situations such as being unable to respond due to a lack of batteries in the event of an emergency, and not only allows firefighting activities to be carried out appropriately, but also has the practical benefit of contributing to energy conservation by utilizing renewable energy.

[0043] In this case, further, according to the present invention, as described above, the battery unit can be charged with regenerative power generated by the vehicle transporting the battery unit, so that the battery pack of the battery unit can be kept constantly charged during transportation by vehicle without the need for a special power source for charging. This makes it possible to avoid situations in which the battery is insufficient to respond in the event of an emergency, and has the practical benefit of allowing firefighting activities to be carried out appropriately. [Brief description of the drawings]

[0044] [Figure 1] FIG. 1 is a perspective view of a portable fire extinguishing pump according to the present invention. [Diagram 2] FIG. 2 is a perspective view of the internal structure of a pump unit used in the present invention. [Diagram 3] FIG. 2 is a side view of the pump unit used in the present invention in a conveying state. [Figure 4] FIG. 2 is a front view of a pump unit used in the present invention. [Diagram 5] FIG. 2 is a schematic perspective view of a cooling means used in the present invention. [Figure 6] FIG. 6 shows a cooling block used in the present invention, where (A) is a schematic side view showing the state in which the cooling block is attached to an electric motor, and (B) is an exploded perspective view of the cooling block. [Figure 7] FIG. 2 is a perspective view of an electric motor and a cooling jacket used in the present invention. [Figure 8] FIG. 2 is a diagram showing a power transmission mechanism to a vacuum pump used in the present invention. [Figure 9] FIG. 2 is a schematic diagram showing a state in which a battery unit used in the present invention is charged. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0045] (1. Portable fire pump) The embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a portable fire pump 10 of the present invention. The portable fire pump 10 is a transportable pump that discharges water for fire extinguishing. It is loaded on a vehicle such as a minivan or a fire engine and transported to a disaster site, and then unloaded from the vehicle and transported to a fire extinguishing location by the human power of a worker for use in fire extinguishing activities. Therefore, when discharging water for fire extinguishing, the portable fire pump 10 is used for fire extinguishing activities regardless of the vehicle that transported it. Note that the portable fire pump 10 of the present invention is sufficient as long as it can be transported by human power without using tools, and does not prevent it from being unloaded from the vehicle and transported on a dolly or the like in an emergency at an actual disaster site.

[0046] 1, the portable fire extinguishing pump 10 is divided into a pump unit 12 and a battery unit 14 configured separately from the pump unit 12, and the pump unit 12 and the battery unit 14 are transported to the fire extinguishing location and electrically connected to each other by electrical connection means (not shown) at the scene for use. That is, the portable fire extinguishing pump 10 of the present invention is transported to the fire extinguishing location divided into three parts: the pump unit 12, the battery unit 14, and electrical connection means (not shown) detachably connected to the pump unit 12 and the battery unit 14.

[0047] (2. Electrical Connection Means) The electrical connection means electrically connects the pump unit 12 and the battery unit 14, and specifically, a connection cable (not shown) can be used. The connection cable is detachably connected to the pump unit 12 and the battery unit 14 while preventing leakage of electricity at both ends by waterproof couplers (not shown). The connection cable, which is the electrical connection means, can supply power between the pump unit 12 and the battery unit 14 and transmit and receive control signals between the controller 24 of the electric motor 16 (described later) and the controller of the battery (not shown) to perform highly accurate electrical control and realize accurate water discharge. In this case, unlike the case where the pump unit 12 is connected to an on-board battery installed in a vehicle waiting at a distant location, it is sufficient to connect the pump unit 12 and the battery unit 14 at the fire extinguishing site, so a short, relatively lightweight cable of about several meters can be used as the connection cable, and the transport weight can be reduced to further increase the possibility of transporting it by human power.

[0048] (3. Pump unit) As shown in Fig. 2 and Fig. 5 to Fig. 7, in the present invention, the pump unit 12 is driven by an electric motor 16, not an engine. Specifically, as shown in Fig. 2, Fig. 5 and Fig. 6, the pump unit 12 includes a base 18, an electric motor 16 mounted on the base 18, a centrifugal pump 20 connected to the electric motor 16 and driven by the electric motor 16 to discharge fire extinguishing water, a vacuum pump 22 that exhausts air from the centrifugal pump 20, sucks up fire extinguishing water from a water source for fire extinguishing water, and supplies the fire extinguishing water to the centrifugal pump 20, and a controller 24 that is installed on a controller base 18B of the base 18 and controls the driving of the electric motor 16. As shown in Fig. 1 and Fig. 4, the base 18 is mounted on a frame 26 and is covered with a cover 28.

[0049] It is desirable to use a turbine pump with guide vanes, which has high discharge pressure and is suitable for miniaturization, as the centrifugal pump 20. As shown in Figures 6(A) and 8, the turbine pump, which is the centrifugal pump 20, is connected to the rotating shaft of the electric motor 16, and the internal guide vanes rotate when driven by the electric motor 16, and fire extinguishing water can be discharged from the discharge port by opening a discharge valve (not shown).

[0050] On the other hand, as shown in Figs. 2 and 8, the vacuum pump 22 is driven by the rotation of a drive pulley 30 which is connected to the rotating shaft of the electric motor 16 and driven by the electric motor 16, and power is transmitted to a driven pulley 34 which is connected to the shaft of the vacuum pump 22 via a drive belt 32.

[0051] In this way, in the present invention, the portable fire extinguishing pump 10 is driven by the electric motor 16, but is divided into the pump unit 12 and the battery unit 14, both of which can be transported by human power, so that each unit 12, 14 can be made lighter than a portable pump in which the pump body and the battery are integrated, and can be transported to the disaster site by human power. In addition, as a result of using electricity as the driving source, it is also easy to perform various electrical controls, as described below.

[0052] Furthermore, in this way, it has become possible to mount an electric motor 16 rather than an engine as the driving source in a portable fire pump. As a result, no exhaust is generated, so it can be used in places where it is difficult to ensure sufficient ventilation, such as indoors or underground. In particular, it can be used as a drainage pump in the event of flooding in subway stations. At the same time, there is no pulsation in the hose when spraying water, so water can be sprayed accurately at the desired location, and the water sprayer is less fatigued, so it can be used for long periods of time.

[0053] In addition, in the present invention, as various check valves (for example, check valves used for suctioning water in the vacuum pump 22) that open and close the fluid flow paths in this pump unit 12, a solenoid-type check valve 35 whose opening and closing is electrically controlled can be used as shown in Fig. 2. This is a configuration that is adopted in the present invention since the portable fire pump is equipped with an electric motor 16, making various electrical controls possible, and specifically, the opening and closing of the solenoid-type check valve 35 can be electrically controlled by the controller 24, and the solenoid-type check valve 35 can be automatically and appropriately set to the required state.

[0054] Therefore, even if the pump unit falls sideways, the opening and closing of the electromagnetic check valve 35 can be electrically controlled to open and close appropriately, and unlike a mechanical check valve, it is possible to respond to water discharge in all positions of the pump unit 12, including a state in which the pump unit 12 falls sideways, and there is no need to reset the pump unit 12 even if the pump unit 12 falls during water discharge work, and it is possible to respond quickly and appropriately at the disaster site where emergency is required without considering how to respond to the position of the pump unit 12. However, it is not necessary for all valves to be electromagnetic, and this does not exclude the use of mechanical check valves in some places, as in conventional fire pumps.

[0055] (4. Battery unit) The battery unit 14 is separate from the pump unit 12 and supplies power to the pump unit 12. As shown in Fig. 1, the battery unit 14 is composed of a unit case 36 and a plurality of battery packs housed in the unit case 36. The battery unit 14 supplies power to the internal battery packs from various power sources and charges them in advance, making it possible to extinguish fires in places where it is difficult to secure a power source, just like an engine-type portable fire pump. In this case, since the battery unit 14 is separate from the pump unit 12 in the present invention, the battery unit 14 can be used as an emergency power source that supplies power to other devices at various disaster sites, and can also be used as a power source for charging information and communication terminals and for lighting.

[0056] Furthermore, by making the multiple battery packs stored in the battery unit 14 detachable from the unit case 36, the battery packs can be removed when not in use and managed. By selectively attaching multiple battery packs, the number of battery packs can be appropriately set according to the intended use to adjust the power supply, and the remaining battery packs can be secured as a backup power source.

[0057] Regarding charging of this battery pack, it is possible to charge it by connecting it to a normal outlet when not in use, but in the present invention, as shown in particular in Fig. 9, this battery unit 14 can be charged by being detachably connected to a solar panel 2 provided on a vehicle 1 that transports the battery unit 14. Furthermore, in the present invention, as shown in Fig. 9, the battery unit 14 can also be charged with regenerative power generated by the vehicle 1 that transports the battery unit 14.

[0058] In this way, the battery unit 14, which can be transported by human power, can be removably connected to the solar panel 2 provided on the vehicle 1 transporting the battery unit 14 and charged. Therefore, no special power source is required for charging, and the battery pack of the battery unit 14 can be kept constantly charged while being transported in the vehicle 1. This makes it possible to avoid situations where the battery is insufficient to respond in the event of an emergency, and allows firefighting activities to be carried out appropriately.

[0059] In this case, furthermore, the battery unit 14 can be charged with regenerative power generated by the vehicle 1 transporting the battery unit 14, so that the battery pack of the battery unit 14 can be kept constantly charged during transportation in the vehicle 1 without the need for a special power source for charging. This makes it possible to avoid situations such as being unable to respond due to a lack of batteries in the event of an emergency, and allows firefighting activities to be carried out appropriately, while also contributing to energy conservation through the use of renewable energy.

[0060] (5. Caster) In the portable fire extinguishing pump 10 of the present invention, the pump unit 12 is provided with casters 38 that allow the pump unit 12 to be moved, as shown in Figures 1, 3, and 4. In the illustrated embodiment, as shown in Figures 1, 3, and 4, two casters 38 are installed on the lower part of the frame 26 on the opposite side to the control panel 58. Therefore, as shown in Figure 3 in particular, by tilting the pump unit 12 and installing only these two casters 38, the pump unit 12 can be moved by rotating the casters 38.

[0061] Therefore, the pump unit 12 can be transported to the scene by one person, and the direction can be easily changed depending on the location where water is to be discharged, and appropriate firefighting activities can be performed without unnecessarily allocating many personnel, so that personnel can be effectively allocated to perform efficient firefighting activities. Four resin feet 26a are attached to the lower part of the frame 26 of the pump unit 12, and the pump unit 12 is supported by these feet 26a except when moving. Therefore, as shown in FIG. 4, the casters 38 are installed at a position where the pump unit 12 is not tilted and is floating with a slight gap from the ground. In this case, by setting the center of gravity of the pump unit 12 behind the casters 38 (toward the control panel 58), the pump unit 12 can be structured so that it is difficult for the pump unit 12 to tip over toward the casters 38, and the pump unit 12 can be prevented from being unintentionally displaced by the casters 38. As shown in FIG. 1, the battery unit 14 can also be provided with casters 40 to increase portability.

[0062] (6. Carrying handle) Furthermore, in the portable fire extinguishing pump 10 of the present invention, the pump unit 12 is provided with a carrying handle 42 that can be held when moving the pump unit 12, as shown in Figures 1, 3, and 4. Specifically, the carrying handle 42 is connected to the upper end of the frame 26 that extends parallel to the panel surface of the control panel 58, which is tilted to improve operability, and is installed so as to be inclined toward the casters 38. Therefore, as shown in Figure 3, an operator can easily move the pump unit 12 by simply holding the carrying handle 42 and tilting the pump unit 12 toward the casters 38, with only the casters 38 touching the ground, and when moving the pump unit 12, the operator can easily transport the pump unit 12 to a predetermined location by simply pulling the carrying handle 42.

[0063] For this reason, the portable fire extinguishing pump 10 of the present invention, although electrically powered, is much easier to transport by one person, and in particular, when used in combination with casters 38, the pump unit 12 can be tilted by operating the carrying handle 42 so that only the casters 38 are in contact with the ground and the pump unit can be transported by rotating the casters 38, thereby reducing the transport load and improving transportability, and the direction of the pump unit 12 can also be easily changed.

[0064] 1, 3 and 4, carrying handle 42 is detachably attached to frame 26 of pump unit 12. Specifically, carrying handle 42 is attached so that one end thereof overlaps the tip of cylindrical frame 26, and is fixed to pump unit 12 by a removable screw 44 that passes through carrying handle 42 and frame 26, and can be removed from pump unit 12 by removing screw 44.

[0065] Therefore, the carrying handle 42 can be attached to the pump unit 12 for easy operation during transportation, and can be detached from the pump unit 12 when discharging water, allowing firefighting activities to be carried out appropriately without the carrying handle 42 interfering with the operation of the pump unit 12 or the water discharging operation. Note that a carrying handle (not shown) can also be provided on the battery unit 14 to improve portability.

[0066] (7.Water cooling means) 5 to 7, in the portable fire extinguishing pump 10 of the present invention, the pump unit 12 has a cooling means 46 for cooling the electric motor 16 and the controller 24 that electrically controls the pump unit 12. The cooling means 46 uses water taken from a water source for fire extinguishing water as cooling water to water-cool the electric motor 16 and the controller 24.

[0067] Specifically, as shown in Figures 5 to 7, the cooling means 46 includes a base cooling water passage 48 provided in the base 18, and a motor cooling water passage 52 provided in a cooling jacket 50 provided on the outer periphery of the electric motor 16 and communicating with the base cooling water passage 48. Water taken from a fire extinguishing water source is passed through the base cooling water passage 48 and the motor cooling water passage 52 as cooling water, thereby water-cooling the electric motor 16 and the controller 24.

[0068] 5, the base cooling water passage 48 is provided in the motor base 18A supporting the electric motor 16 and the controller base 18B on which the controller 24 is placed on the motor base 18A, and a part of the fire extinguishing water sucked by the vacuum pump 22 is first supplied from the water intake 48a into the base cooling water passage 48 provided in the motor base 18A, and then passed through the base cooling water passage 48 provided in the controller base 18B to water-cool the electric motor 16 and the controller 24 via the base 18. In this case, the base 18 is made of aluminum, which has high electrical conductivity, so that the electric motor 16 and the controller 24 can be efficiently cooled.

[0069] 6 and 7, the cooling jacket 50 equipped with the motor cooling water passage 52 is configured by connecting a plurality of cooling blocks 50a attached to the outer periphery of the electric motor 16 via a heat transfer sheet 50c having a thickness of about 0.5 mm, and the cooling blocks 50a are connected to each other via elbows 50b to form the motor cooling water passage 52 on the outer periphery of the electric motor 16. Cooling water that has passed through the base cooling water passage 48 provided in the controller base 18B is supplied into this motor cooling water passage 52 to water-cool the electric motor.

[0070] This cooling means 46 water-cools the electric motor 16 and the controller 24, and unlike air-cooling which requires a structure for heat dissipation, can adequately cool the object without increasing weight, and because it uses water taken from the fire-extinguishing water source as cooling water, water-cooling can be achieved without preparing cooling water in advance.

[0071] Furthermore, since the base cooling water passage 48 and the motor cooling water passage 52 are connected in series as described above, the electric motor 16 and the controller 24 can be cooled using only one cooling passage, and since cooling is performed using the base 18, the structure for indirect cooling can be simplified by being integrated with the base 18, which is an essential structure for a pump. This suppresses the increase in weight due to the increase in the number of parts for water cooling, achieving a compact and lightweight design, and achieving water cooling without affecting portability, and allowing manual transportation while ensuring proper operation.

[0072] In this case, the cooling jacket 50 is detachably attached to the electric motor 16 as shown in Fig. 7. That is, the electric motor 16 can be divided into the electric motor itself and the cooling jacket 50. Therefore, in the case of an electric motor in which the cooling jacket 50 is integrally attached to the motor housing, if the cooling jacket 50 becomes corroded or clogged with sand, it is necessary to replace the cooling jacket 50 together with the electric motor. However, in the present invention, if a problem occurs only in the cooling jacket 50, the cooling jacket 50 can be removed from the electric motor 16 and only the cooling jacket 50 can be replaced or maintenance can be performed on the cooling jacket, thereby reducing the cost and effort of maintenance and inspection.

[0073] Meanwhile, the electric motor 16 is also detachably supported by the base 18. Therefore, even if a malfunction occurs only in the electric motor 16, the cooling jacket 50 can be removed and only the electric motor 50 can be replaced, which similarly reduces the effort and cost required for maintenance. In addition, since the electric motor 16 is detachably supported by the base 18 in this way, it can be changed or replaced by being detached, and by replacing it with an electric motor 16 having a different output, the output of the electric motor 16 can be changed as necessary, and in the event of a breakdown in the electric motor 16, only the electric motor 16 can be replaced, which reduces the cost required for maintenance.

[0074] (8. Automation of water absorption) In the portable fire extinguishing pump 10 of the present invention, the vacuum pump 22 for supplying fire extinguishing water as priming water into the centrifugal pump 20 is controlled so that, when water is sucked from the water source for fire extinguishing, the power from the electric motor 16 is transmitted by the driving of the solenoid 56, and the vacuum pump 22 automatically starts sucking water, as shown in Fig. 8. Specifically, as shown in Fig. 8, the vacuum pump 22 is controlled so that, by operating the water sucking switch 58b provided on the control panel 58, the solenoid 56 rotates to displace the tension pulley 60 and press it against the drive belt 32 to apply tension to the drive belt 32, so that the power from the drive pulley 30 is transmitted to the driven pulley 34 via the drive belt 32, and the vacuum pump 22 starts rotating. On the other hand, by rotating the solenoid 56 in the reverse direction, the tension pulley 60 moves away from the drive belt 32, and the tension applied to the drive belt 32 is released, and the drive of the drive pulley 30 by the electric motor 16 is not transmitted to the driven pulley 34, and the vacuum pump 22 does not operate.

[0075] That is, in the case of the portable engine-type fire extinguishing pumps that have been generally used up until now, the suction operation is first performed by turning on the power switch, operating the choke, starting the cell or operating the recoil, setting the throttle dial to the suction position, pulling the suction lever of the vacuum pump, and finally returning the throttle dial to the zero position to complete the suction operation into the centrifugal pump 20. After that, the discharge valve is opened and the throttle dial is set to an appropriate discharge position to discharge water. However, these operations can be difficult for ordinary people who are unfamiliar with the operation, so in this invention, by automating the water intake using solenoid 56, operations such as choke operation, start-cell or recoil operation, and setting the throttle dial to the water intake position are omitted, and the operating procedures for starting the fire pump are reduced and the water intake work can be automated by operating the water intake switch 58b only. This makes it possible to avoid problems caused by incorrect operation, such as forgetting to open or close the valve, and simplifies the operation of the fire pump, which is particularly difficult for people who are unfamiliar with the operation, making it possible for a wide range of people to respond to disasters.

[0076] (9. Operation support) In addition, in accordance with the automation of water intake, the present invention also provides a means for further assisting operation. Specifically, as shown in Fig. 1 and Fig. 4, the pump unit 12 has a control panel 58 that is inclined on the front surface to facilitate operation and visibility, and this control panel 58 is provided with a power switch 58a for controlling the on / off of the power supply, the water intake switch 58b, and a throttle dial 58c for controlling the rotation speed of the electric motor to control the flow rate of fire water discharged from the centrifugal pump, and further, a separate open lamp 62 is provided on the handle portion 54 of the discharge valve to inform the user that it is time to open the discharge valve that opens the centrifugal pump 20.

[0077] The power switch 58a, the water intake switch 58b, the release lamp 62, and the throttle dial 58c light up by blinking or lighting up in the order of operation according to the process to be operated at the moment. That is, the operation starts with the power being turned on, so the power switch 58a blinks or lights up to inform the operator that the power switch 58a should be operated, and when the power is turned on, the water intake switch 58b blinks or lights up to inform the operator that the water intake switch 58b should be operated, and when the water intake into the centrifugal pump 20 is completed, the release lamp 62 blinks or lights up to inform the operator that the water discharge preparation is complete, and when the release lamp 62 blinks or lights up, the operator opens the discharge valve, and after opening, the throttle dial 58c blinks or lights up to prompt the operator to adjust the flow rate. This allows the operator to be guided through the operation procedure and supports the operation, and the operator can easily and appropriately perform the water discharge operation by simply operating the corresponding switches in sequence according to the blinking or lighting, so that even general people who are not familiar with the operation can handle it.

[0078] (10. Battery level display on the pump side) 1 and 4, the pump unit 12 in the present invention is provided with a remaining power display section 64 that displays the remaining amount of power that can be supplied from the battery unit 14. Specifically, this remaining power display section 64 is also provided on the control panel 58 of the pump unit 12, and in the illustrated embodiment, the remaining power display section 64 lights up, blinks, or goes out depending on the remaining amount of power, thereby displaying the remaining amount of power that can be supplied. Alternatively, the remaining amount of power can be displayed by changing the color of the emitted light or by changing the indicator depending on the remaining amount of power.

[0079] In this case, a remaining power display unit that displays the remaining amount of power that can be supplied from the battery unit 14 is provided on the side of the pump unit 12 that receives power and is operated by the operator, rather than on the side of the battery unit 14 that supplies power.This is characterized by the fact that the water-discharging operator can easily check the remaining battery power without having to interrupt the water-discharging operation.

[0080] (11. Electronic Lock) In addition, the present invention further includes a water discharge lock means (not shown) that electronically restricts the rotation of the electric motor 16 to lock the discharge of fire-extinguishing water when the throttle dial 58c, which is set to be at zero when the discharge valve that opens the centrifugal pump 20 to allow water discharge is in the fully closed position, is at the zero point and there is no change in the opening of the discharge valve even after a preset specified time has elapsed.

[0081] Specifically, this electronic locking means is programmed in the controller 24, and measures the passage of a preset predetermined time using a timer (not shown) that starts when the discharge valve is set to the fully closed position, while detecting the opening of the discharge valve with a sensor (not shown), and if there is no change in the opening of the discharge valve even after the predetermined time set in the timer has elapsed, restricts the rotation of the electric motor 16 by electronic control to lock the discharge of fire water. As a result, even if fire water is supplied to the centrifugal pump 20 and left without discharging, or if a person who is unaware of this operates the throttle dial 58c, it is possible to prevent water from being suddenly discharged unintentionally, thereby ensuring safety. [Industrial Applicability]

[0082] The present invention can be widely applied as a portable fire pump that is transported to a disaster site and used for firefighting, and is particularly applicable to a pump that can be driven by electrical control without exhaust and can be used indoors, underground, etc., while still being capable of being transported by human power. [Explanation of symbols]

[0083] 1 vehicle 2. Solar Panels 10 Portable fire pumps 12 Pump unit 14 Battery unit 16 Electric motor 18 Foundation 18A motor base 18B Controller Base 20 Centrifugal Pump 22 Vacuum Pump 24 Controller 26 Frames 26a Foot 28 Cover 30 Drive pulley 32 Drive belt 34 Driven pulley 35 Electromagnetic check valve 36 Unit Case 38 Caster 40 Caster (battery unit side) 42 Carrying handle 44 Bis 46 Cooling means 48 Base cooling passage 48a Water intake 50 Cooling jacket 50a Cooling block 50b elbow 50c heat transfer sheet 52 Motor cooling passage 54 Discharge valve handle 56 Solenoid 58 Control Panel 58a Power switch 58b Water intake switch 58c throttle dial 60 Tension pulley 62 Open Lamp 64 Remaining battery indicator

Claims

1. A portable fire extinguishing pump that can be transported and discharges water for fire extinguishing, The portable fire extinguishing pump is divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit; the pump unit and the battery unit are electrically connected to each other by an electrical connection means which is detachable from the pump unit and the battery unit; A portable fire extinguishing pump, characterized in that the electrical connection means enables transmission and reception of signals for supplying and controlling power between the pump unit and the battery unit.

2. A portable fire extinguishing pump that can be transported and discharges water for fire extinguishing, The portable fire extinguishing pump is divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit; A portable fire extinguishing pump, wherein the pump unit is provided with casters that enable the pump unit to be moved.

3. A portable fire extinguishing pump that can be transported and discharges water for fire extinguishing, The portable fire extinguishing pump is divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit; A portable fire extinguishing pump, characterized in that the pump unit is equipped with a carrying handle that can be gripped when moving the pump unit.

4. A portable fire extinguishing pump that can be transported and discharges water for fire extinguishing, The portable fire extinguishing pump is divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit; A portable fire extinguishing pump characterized in that the pump unit is provided with casters that enable the pump unit to be moved, and a carrying handle that can be gripped when moving the pump unit is attached.

5. 5. The portable fire extinguishing pump according to claim 3, wherein the carrying handle is detachably attached to the pump unit.

6. A portable fire extinguishing pump that can be transported and discharges water for fire extinguishing, The portable fire extinguishing pump is divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit; The pump unit has a cooling means for cooling the electric motor and a controller that electrically controls the pump unit, and the cooling means uses water taken from the water source of the fire extinguishing water as cooling water to water-cool the electric motor and the controller.

7. A portable fire extinguishing pump that can be transported and discharges water for fire extinguishing, The portable fire extinguishing pump is divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit; The pump unit has a cooling means for cooling the electric motor and a controller that electrically controls the pump unit, and the cooling means includes a base cooling water passage provided in a base that supports the electric motor and the controller, and a motor cooling water passage provided in a cooling jacket provided on the outer periphery of the electric motor and communicating with the base cooling water passage, and the electric motor and the controller are water-cooled by passing water taken from a water source for fire extinguishing water through the base cooling water passage and the motor cooling water passage as cooling water.

8. 8. The portable fire extinguishing pump according to claim 7, wherein the electric motor is detachably supported on the base, and the cooling jacket is detachably attached to the electric motor.

9. A portable fire extinguishing pump that can be transported and discharges water for fire extinguishing, The portable fire extinguishing pump is divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit; 1. A portable fire extinguishing pump, comprising: a check valve for opening and closing a fluid flow path within the pump unit; and a solenoid valve type check valve whose opening and closing is electrically controlled.

10. A portable fire extinguishing pump that can be transported and discharges water for fire extinguishing, The portable fire extinguishing pump is divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit; the pump unit and the battery unit are electrically connected to each other by an electrical connection means which is detachable from the pump unit and the battery unit; The electrical connection means allows transmission and reception of signals for supplying and controlling power between the pump unit and the battery unit, 13. A portable fire extinguishing pump, comprising: a pump unit provided with a remaining power indicator for indicating a remaining amount of power that can be supplied from the battery unit.

11. A portable fire extinguishing pump that can be transported and discharges water for fire extinguishing, The portable fire extinguishing pump is divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit; the pump unit includes a centrifugal pump that discharges the fire extinguishing water, and a vacuum pump that discharges air from within the centrifugal pump, sucks up the fire extinguishing water from a water source of the fire extinguishing water, and supplies the fire extinguishing water to the centrifugal pump; The vacuum pump is controlled so that, when suctioning water from the water source for fire extinguishing, power from the electric motor is transmitted by driving a solenoid through the operation of a water suction switch provided on the pump unit, thereby automatically starting suction of water.

12. 12. The portable fire extinguishing pump according to claim 11, The pump unit further includes a power switch for controlling the on / off of a power source, an open lamp for indicating that it is time to open a discharge valve for opening the centrifugal pump, and a throttle dial for controlling the rotation speed of the electric motor to control the flow rate of the fire-extinguishing water discharged from the centrifugal pump, The electric motor is supplied with power by turning on the power switch, The vacuum pump automatically starts suctioning water when the power from the electric motor is transmitted by driving the solenoid through the operation of the water suction switch, The centrifugal pump discharges the fire extinguishing water at a flow rate adjusted by the throttle dial by opening the discharge valve, 13. A portable fire extinguishing pump, comprising: a power switch, a water intake switch, an open lamp and a throttle dial, each of which emits light in order of operation according to a process to be performed at the present time.

13. A portable fire extinguishing pump that can be transported and discharges water for fire extinguishing, The portable fire extinguishing pump is divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit; the pump unit includes a centrifugal pump that discharges the fire extinguishing water by opening a discharge valve, a vacuum pump that discharges air from within the centrifugal pump, sucks up the fire extinguishing water from a water source of the fire extinguishing water, and supplies the fire extinguishing water to the centrifugal pump, and a throttle dial that controls the rotation speed of the electric motor to control the flow rate of the fire extinguishing water discharged from the centrifugal pump, a water discharge lock means for electronically restricting the rotation of the electric motor to lock the discharge of fire water when the throttle dial, which is set to be at zero when the discharge valve is in a fully closed position, is at the zero point and there is no change in the opening of the discharge valve even after a predetermined time has elapsed.

14. A portable fire extinguishing pump that can be transported and discharges water for fire extinguishing, The portable fire extinguishing pump is divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit; The portable fire extinguishing pump, wherein the battery unit can be recharged by being detachably connected to a solar panel provided on a vehicle that transports the battery unit.

15. A portable fire extinguishing pump that can be transported and discharges water for fire extinguishing, The portable fire extinguishing pump is divided into a pump unit driven by an electric motor and a battery unit that is separate from the pump unit and supplies power to the pump unit; 1. A portable fire extinguishing pump, wherein the battery unit can be charged with regenerative power generated by a vehicle that transports the battery unit.

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