JP2015044148A - Washer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve waterproof performance without impairing cooling performance of a washer.SOLUTION: The washer for pressurizing and jetting cleaning liquid includes: a pump 60 for pressurizing the cleaning liquid supplied from a tank through an inflow path 26; an electric motor 61 serving as a driving source of the pump 60; a secondary battery 62 serving as a power source of the electric motor 61; a suction inlet and a suction outlet provided at the electric motor 61; and a fan 71 for rotating integrally with an output shaft 61a of the electric motor 61, and forming airflow flowing out from the suction outlet to the outside of the electric motor 61, and flowing in from the suction inlet to the inside of the electric motor 61. At least a part of the airflow is cooled by heat exchange with the cleaning liquid in the inflow path 26, and after that, flows in from the suction inlet to the inside of the electric motor 61.

Description

  The present invention relates to a cleaning machine that discharges pressurized liquid to clean an object to be cleaned.

  The washing machine as described above has a main body in which a pump for pressurizing liquid, an electric motor that is a driving source of the pump, and the like, and an injection device connected to the main body, and is pressurized by the pump. The cleaning liquid is discharged (injected) from the injection device toward the object to be cleaned (see Patent Document 1). Note that the liquid discharged (injected) from the cleaning machine may be tap water or a liquid containing a detergent or an abrasive. Therefore, in this specification, the liquid discharged (injected) from the cleaning machine may be collectively referred to as “cleaning liquid”.

JP 2005-313008 A

  An electric motor that is a driving source of the pump generates heat during operation. Therefore, in order to maintain the temperature of the electric motor within a predetermined operating temperature range, it is necessary to cool the electric motor. Therefore, in the conventional cleaning machine, a fan that rotates integrally with the output shaft of the electric motor is provided, and a plurality of air holes and wind windows (hereinafter collectively referred to as “wind windows”) are provided in the main body in which the electric motor is accommodated. It was done. When the fan rotates, outside air is taken into the main body through an air window provided in the main body, and air inside the main body is discharged to the outside. That is, the air inside the main body warmed by the heat generated from the electric motor is discharged to the outside of the main body, the outside air is introduced into the main body, and the temperature of the electric motor is maintained within a predetermined operating temperature range. Therefore, the cooling effect of the electric motor improves as the number of wind windows increases. In other words, the cooling effect of the electric motor improves as the area of the opening provided in the main body increases.

  However, if an opening such as an air window is provided in the main body, the cleaning liquid discharged from the spray device may enter the main body from the opening, and there is a possibility that a short circuit or corrosion may occur. Further, when the cleaning machine includes a tank for storing the cleaning liquid, the cleaning liquid may enter the main body from the opening when the cleaning liquid is put into the tank or when the cleaning liquid in the tank is discarded. Therefore, the waterproof performance of the washing machine improves as the area of the opening provided in the main body is smaller. As described above, the cooling performance and the waterproof performance of the washing machine are in a contradictory relationship.

  An object of the present invention is to improve waterproof performance without impairing the cooling performance of the washing machine.

  The cleaning machine of the present invention pressurizes and discharges the cleaning liquid. In one aspect of the present invention, the cleaning machine includes a tank in which the cleaning liquid is stored, a pump that pressurizes the cleaning liquid supplied from the tank via an inflow path, an electric motor that is a driving source of the pump, and the tank A main body that houses the pump and the electric motor, and a fan that rotates integrally with the output shaft of the electric motor and forms an air flow inside the main body. And the said inflow path and the said electric motor are located on the flow path of the said air flow.

  In another aspect of the present invention, a control unit for controlling the electric motor is provided, and the control unit is located on the flow path of the air flow.

  In another aspect of the invention, the air flow circulates within the body.

  In another aspect of the present invention, the cleaning machine includes a tank in which the cleaning liquid is stored, a pump that pressurizes the cleaning liquid supplied from the tank via an inflow path, an electric motor that is a driving source of the pump, A control unit that controls the electric motor, a main body that houses the tank, the pump, the electric motor, and the control unit, and a fan that rotates integrally with an output shaft of the electric motor and circulates an air flow inside the main body And having.

  In another aspect of the present invention, the inflow path, the electric motor, and the control unit are located on the flow path of the air flow.

  In another aspect of the present invention, the cleaning liquid includes a tank in which the cleaning liquid is stored, a pump that pressurizes the cleaning liquid supplied from the tank via an inflow path, an electric motor that is a driving source of the pump, and the electric motor. An air flow that rotates integrally with the suction port and the suction port provided in the motor and the output shaft of the electric motor, flows out from the suction port to the outside of the electric motor, and flows into the electric motor from the suction port. And a fan that forms Then, at least a part of the air flow is cooled by heat exchange with the cleaning liquid in the inflow passage and then flows into the electric motor from the suction port.

  In another aspect of the present invention, at least a part of the pipe member forming the inflow path is disposed on the air flow path.

  In another aspect of the present invention, a flow path forming member that forms the flow path of the air flow is provided around the electric motor.

  In another aspect of the invention, the flow path forming member is a rib formed integrally with a main body that houses the pump, the electric motor, and the fan. The rib is disposed between the inflow path and the electric motor so as to separate the inflow path and the electric motor.

  In another aspect of the present invention, a cleaning machine includes: a tank in which cleaning liquid is stored; a pump that pressurizes cleaning liquid supplied from the tank via an inflow path; and an electric motor that is a driving source of the pump. Have. The inflow path and the electric motor are thermally connected, and the electric motor is cooled by heat exchange with the cleaning liquid in the inflow path.

  In another aspect of the present invention, the inflow path and the electric motor are thermally connected via a heat sink.

  In another aspect of the present invention, there is provided a battery housing portion into which a secondary battery serving as a power source for the electric motor can be taken in and out. The battery housing portion includes a first case member, a second case member that is abutted against the first case member along a direction in which the secondary battery is put in and out, an end surface of the first case member that is abutted against each other, and the A first seal member interposed between the end surface of the second case member.

  In another aspect of the present invention, the second case member includes an opening through which the secondary battery is taken in and out, a lid that opens and closes the opening, and when the opening is closed by the lid, A second seal member interposed between the inner surface of the lid and the periphery of the opening facing the inner surface.

  In another aspect of the present invention, a detection unit that detects that the opening is closed is provided, and the electric motor is not started unless the detection unit detects that the opening is closed.

  According to the present invention, the waterproof performance can be improved without impairing the cooling performance of the washing machine.

It is an external appearance perspective view which shows the main body and tank of the washing machine which concern on 1st Embodiment. It is a side view which shows the washing | cleaning gun of the washing machine which concerns on 1st Embodiment. It is another external perspective view which shows the main body and tank of the washing machine which concern on 1st Embodiment. FIG. 4 is a longitudinal sectional view of the main body and the tank shown in FIGS. 1 and 3. FIG. 4 is a cross-sectional view of the main body shown in FIGS. 1 and 3. FIG. 4 is another longitudinal sectional view of the main body and the tank shown in FIGS. 1 and 3. FIG. 4 is still another longitudinal sectional view of the main body and the tank shown in FIGS. 1 and 3. It is a perspective view of the 1st case member and 2nd case member which comprise the battery accommodating part shown by FIG. 5, FIG. It is sectional drawing of the battery accommodating part comprised by the 1st case member and 2nd case member which are shown by FIG. It is sectional drawing which shows the modification of the washing machine which concerns on 1st Embodiment. It is sectional drawing which shows the other modification of the washing machine which concerns on 1st Embodiment.

(First embodiment)
Hereinafter, an example of a washing machine to which the present invention is applied will be described in detail with reference to the drawings. The cleaning machine 1 according to the present embodiment has a main body 20 shown in FIG. 1 and a cleaning gun 30 as an injection device shown in FIG. The main body 20 shown in FIG. 1 and the cleaning gun 30 shown in FIG. 2 are connected via a pressure hose 40 (FIG. 2). One end of the pressure hose 40 shown in FIG. 2 is fixed to the cleaning gun 30, and the other end of the pressure hose 40 is detachable from the main body 20 (FIG. 1).

  As shown in FIG. 1, a tank 50 is mounted on the main body 20, and the main body 20 and the tank 50 have a substantially rectangular parallelepiped appearance as a whole. A connection port 21 to which one end of the pressure hose 40 shown in FIG. 2 is connected is provided on the front surface of the main body 20. As shown in FIG. 3, a main switch 22 and an adjustment dial 23 are provided on the back surface of the main body 20. When the main switch 22 is operated, a cleaning liquid pressurized by a pump, which will be described later, is discharged from the connection port 21 (FIG. 1), and the cleaning gun is connected via the pressure hose 40 (FIG. 2) connected to the connection port 21. 30 (FIG. 2). When the trigger 31 provided on the cleaning gun 30 is operated, the cleaning liquid supplied to the cleaning gun 30 is discharged from the tip of the cleaning gun 30 toward an object to be cleaned (not shown).

  Although not shown, a metal nozzle is built in the tip of the cleaning gun 30 shown in FIG. The cleaning liquid supplied to the cleaning gun 30 flows into the nozzle through a flow path formed inside the cleaning gun 30 and is discharged (injected) from the tip of the nozzle. When the adjustment dial 23 shown in FIG. 3 is rotated, the discharge pressure of the cleaning liquid discharged from the nozzle changes (increases / decreases).

  As shown in FIG. 4, the tank 50 is overlaid on the main body 20. Specifically, a plurality of convex portions 51 are formed on the bottom surface of the tank 50, while a plurality of concave portions 24 are formed on the top surface of the main body 20. And the tank 50 is positioned by the convex part 51 currently formed in the tank bottom face fitting by the recessed part 24 currently formed in the main body upper surface. As shown in FIGS. 1 and 3, buckles 25 are provided on the front surface and the back surface of the main body 20, respectively. On the other hand, a locking portion 52 is provided on each of the front and back surfaces of the tank 50. When the buckle 25 provided on the main body 20 is locked to the locking portion 52 provided on the tank 50, the tank 50 is fixed to the main body 20. That is, when the two buckles 25 are respectively locked to the corresponding locking portions 52, the main body 20 and the tank 50 are connected and integrated. On the other hand, when the locking of the buckle 25 to the locking portion 52 is released, the connection between the main body 20 and the tank 50 is released, and the main body 20 and the tank 50 can be separated. Accordingly, when the connection between the main body 20 and the tank 50 is released, and the tank 50 is lifted by holding the handle 53 provided in the tank 50, the tank 50 is separated from the main body 20, and only the tank 50 can be carried. it can. Therefore, when the cleaning liquid (tap water) is put into the tank 50, only the tank 50 can be carried to the place where the tap is installed. The tank 50 is provided with a screw-in type cap 54. The cap 54 is removed when the cleaning liquid is put into the tank 50 or when the cleaning liquid in the tank 50 is discarded.

  As shown in FIGS. 4 and 5, the main body 20 includes a pump 60 that pressurizes the cleaning liquid supplied from the tank 50, an electric motor 61 that is a driving source of the pump 60, and a power source for the electric motor 61. A secondary battery 62 is accommodated. The secondary battery 62 in the present embodiment is a lithium ion battery with a rated voltage of 14.4V.

  The pump 60 is a plunger pump including a cylinder 60a and a plunger 60b accommodated in the cylinder 60a so as to be reciprocally movable. The rotational movement of the electric motor 61 is converted into a reciprocating movement of the plunger by a conversion mechanism 63 interposed between the electric motor 61 and the pump 60. As shown in FIG. 5, the conversion mechanism 63 includes a crankshaft 64 including a gear that meshes with a pinion provided on the output shaft 61 a of the electric motor 61, and the crankshaft 64 is pumped via a connecting rod 65. 60 plungers 60b. Specifically, one end of the connecting rod 65 is rotatably connected to a crank pin (eccentric pin) of the crankshaft 64, and the other end of the connecting rod 65 is rotatably connected to the plunger 60b. That is, the eccentric amount of the crank pin corresponds to the stroke amount of the plunger 60b.

  Here, in a washing machine including two or more plunger pumps, vibrations associated with the reciprocating movement of the plunger and the eccentric rotation of the crankshaft can be canceled by shifting the phases of the plunger pumps. However, large electric power is required to drive a plurality of plunger pumps. On the other hand, since the washing machine 1 of the present embodiment uses the secondary battery 62 as a power source, it is required to reduce the power consumption as much as possible to extend the continuous operation time. For this reason, the washing machine 1 according to the present embodiment is provided with only one pump (plunger pump) 60. That is, the vibrations cannot be offset by shifting the phases of the plurality of plunger pumps. Therefore, as shown in FIGS. 4 and 5, a counterweight 66 is provided on the crankshaft 64. Specifically, a counterweight 66 is provided at the base of the crankpin. That is, the counterweight 66 is provided coaxially with the crankshaft 64 (on an axis that is not eccentric). In the cleaning machine 1 according to the present embodiment, the counterweight 66 that rotates integrally with the crankshaft 64 suppresses vibrations associated with the reciprocating movement of the plunger 60b and the eccentric rotation of the crankshaft 64.

  As shown in FIG. 5, a first flow path 26 that connects the tank 50 (FIG. 4) and the pump 60 is provided inside the main body 20. In addition, as shown in FIG. 4, a second flow path 27 that connects the pump 60 and the connection port 21 is also provided in the main body 20. The cleaning liquid stored in the tank 50 shown in FIG. 4 is supplied to the pump 60 through the first flow path 26 and pressurized. The cleaning liquid pressurized by the pump 60 is sent to the connection port 21 via the second flow path 27. Therefore, in the following description, the first flow path 26 that connects the tank 50 and the pump 60 is referred to as an “inflow path 26”, and the second flow path 27 that connects the pump 60 and the connection port 21 is “outflow”. Called path 27 ". That is, the cleaning liquid stored in the tank 50 is supplied to the pump 60 through the inflow path 26 and pressurized. The cleaning liquid pressurized by the pump 60 is sent to the connection port 21 via the outflow passage 27.

  As shown in FIG. 5, one end of the inflow passage 26 is connected to an inlet provided on the end surface of the cylinder 60a. A connection plug 28 shown in FIG. 6 is provided at the other end of the inflow path 26. On the other hand, a check valve 55 is provided on the bottom surface of the tank 50. When the tank 50 is stacked on the main body 20, the check valve 55 is opened by the connection plug 28, and the tank 50 and the inflow path 26 (FIG. 5). And communicate. Specifically, the valve body 55a of the check valve 55 is pushed up by the connection plug 28 and separated from the valve seat 55b. Then, a gap (not shown) is formed between the valve body 55a and the valve seat 55b, and the tank 50 and the inflow passage 26 (FIG. 5) communicate with each other through this gap. The check valve 55 is provided with a spring that presses the valve body 55a against the valve seat 55b. When the tank 50 is pulled up from the main body 20, the valve body 55a is automatically pressed against the valve seat 55b and the gap Is closed.

  As shown in FIG. 4, one-way valves are provided at the inlet and the outlet of the cylinder 60a. When the plunger 60b moves backward (moves to the right side in FIG. 4) while the tank 50 and the inflow passage 26 are in communication with each other as described above, the one-way valve provided at the inlet of the cylinder 60a is opened. The one-way valve provided at the outlet of the cylinder 60a is closed, and the cleaning liquid flows into the cylinder 60a. Next, when the plunger 60b moves forward (moves to the left side in FIG. 4), the one-way valve provided at the inlet of the cylinder 60a is closed and the one-way valve provided at the outlet is opened, so that the cleaning liquid is supplied to the cylinder. The pressure is applied between the nozzles from 60a and discharged from the nozzles at, for example, 2.0 MPa.

  As shown in FIGS. 5 and 7, the electric motor 61 includes a cylindrical case 70 (hereinafter referred to as “motor case 70”), and a stator and a rotor are accommodated in the motor case 70. Yes. One end of the output shaft 61 a of the electric motor 61 is fixed to the rotor in the motor case 70, and the other end of the output shaft 61 a protrudes outward from the end surface of the motor case 70. That is, the longitudinal direction of the motor case 70 and the axial direction of the output shaft 61a are parallel. Although illustration is omitted, a suction port is provided on one end surface of the motor case 70 from which the output shaft 61a protrudes, and a suction port is provided on the other end surface. In other words, the suction port is provided on one end side of the output shaft 61a, and the suction port is provided on the other end side of the output shaft 61a. In the following description, one end surface “rear end surface” of the motor case 70 provided with the suction port will be referred to as the other end surface of the motor case 70 provided with the suction port “front end surface”. That is, the suction port is provided on the rear end surface of the motor case 70, and the suction port is provided on the front end surface of the motor case 70. The output shaft 61a protrudes from the front end surface of the motor case 70.

  A fan 71 is mounted on the projecting portion of the output shaft 61a projecting from the front end surface of the motor case 70 so as to be integrally rotatable. That is, the fan 71 is disposed in front of the suction port. The pinion is provided at the tip of the output shaft 61 a that protrudes from the fan 71 through the fan 71. When the fan 71 rotates, air inside the motor case 70 is sucked out of the motor case 70 from the suction port, and air outside the motor case 70 is sucked into the motor case 70 from the suction port. That is, the fan 71 forms an air flow that flows out from the suction port to the outside of the electric motor 61 inside the main body 20 and flows into the electric motor 61 from the suction port.

  As shown in FIG. 5, a pair of ribs 72 and 73 are provided around the electric motor 61. The ribs 72 and 73 are integrally formed with the main body 20 and face each other with the electric motor 61 and the fan 71 interposed therebetween. In other words, the electric motor 61 and the fan 71 are disposed between the pair of ribs 72 and 73. Further, one end of the ribs 72 and 73 passes through the front end surface of the motor case 70 and reaches the front of the fan 71. On the other hand, the other ends of the ribs 72 and 73 reach substantially the same position as the rear end surface of the motor case 70. Therefore, the air sucked out of the electric motor 61 from the suction port passes through the outside of the ribs 72 and 73 and reaches the suction port. In FIG. 5, the flow path of the air flow is schematically shown by a broken line. That is, the ribs 72 and 73 are flow path forming members that form air flow paths.

  Further, the rib 73 is disposed between the inflow path 26 and the electric motor 61 so as to separate them. Therefore, the air flow passing outside the rib 73 contacts the pipe member (in this embodiment, an aluminum pipe) that forms the inflow path 26 in the process of reaching the suction port, and heat between the cleaning liquid in the inflow path 26. Cooled by exchange. In other words, at least a part of the inflow passage 26 is disposed on the airflow passage circulating inside the main body. As shown in FIG. 7, a part of the air flow circulating inside the main body passes above the electric motor 61 and cools the controller 80 serving as a control unit disposed above the electric motor 61. . Here, when the electric motor 61 is a brushless motor, switching elements (six) for driving the brushless motor 61 are arranged on a substrate on which the controller 80 is mounted. These switching elements are switched by a control signal from the controller 80 in order to control drive power to the brushless motor 61. This switching operation raises the temperature of the switching element. Therefore, the controller 80 (switching element) is cooled by the air flow, so that the heat generation of the switching element is suppressed and the breakage of the switching element is suppressed.

  As described above, in the cleaning machine 1 according to the present embodiment, the electric motor 61 and the controller 80 are cooled by the air flow circulating inside the main body 20. Furthermore, the air flow is cooled by heat exchange with the cleaning liquid. Therefore, the electric motor 61 and the controller 80 are sufficiently cooled, and these temperatures are maintained within a predetermined operating temperature range without providing a wind window in the main body 20 and taking in outside air. Therefore, even if the sealing degree of the main body 20 is increased to improve the waterproof performance, the cooling performance is not impaired. In addition, by improving the sealing degree of the main body 20, an improvement in quietness is also expected.

  Next, a housing structure for the secondary battery 62 shown in FIGS. 5 and 6 will be described. As shown in these drawings, a battery housing portion 90 formed of a member separate from the main body 20 is provided inside the main body. The battery accommodating part 90 is comprised from the 1st case member 91 and the 2nd case member 92 which are shown by FIG. The first case member 91 has a substantially rectangular tube shape with one end opened, and the second case member 92 has both ends opened. As shown in FIG. 9, the first case member 91 and the second case member 92 are abutted with each other along the insertion / removal direction of the secondary battery 62 (up and down direction in FIG. 9). An accommodation space in which the secondary battery 62 is accommodated is formed by the internal space of the first case member 91 and the second case member 92 that communicate with each other. As shown in FIG. 8, a rubber packing 93 as a first seal member is interposed between the end surface of the first case member 91 and the end surface of the second case member 92 that are abutted with each other. The rubber packing 93 is formed in series without a seam, and goes around the entire circumference of the butted portion of the first case member 91 and the second case member 92. The rubber packing 93 is compressed by being sandwiched between the end surface of the first case member 91 and the end surface of the second case member 92, and is in close contact with both end surfaces.

  A substantially rectangular opening 94 through which the secondary battery 62 is taken in and out is formed on one surface of the second case member 92 (surface opposite to the surface facing the first case member 91). A lid 95 that opens and closes the opening 94 is rotatably attached to one side of the opening 94, and a rubber packing 96 as a second seal member is provided on the inner surface of the lid 95. When the opening 94 is closed by the lid 95, the rubber packing 96 is interposed between the inner surface of the lid 95 and the peripheral edge of the opening 94 facing the inner surface. The rubber packing 96 is formed in series without a seam, and goes around the entire circumference of the abutting portion between the inner surface of the lid 95 and the peripheral edge of the opening 94.

  A locking recess 94a is formed on the other side of the opening 94 of the second case member 92, and a hook 95a locked on the locking recess 94a is formed on one side of the lid 95. When the lid 95 is rotated and the hook 95 a is locked in the locking recess 94 a, the rubber packing 96 is sandwiched between the inner surface of the lid 95 and the periphery of the opening 94 and compressed. That is, the rubber packing 96 is in close contact with the inner surface of the lid 95 and the periphery of the opening 94.

  As shown in FIG. 9, the second case member 92 is provided with a switch 97 as a detection unit that detects that the opening 94 (FIG. 8) is closed by the lid 95. When the lid 95 is closed to a predetermined position, the switch 97 is pushed by the lid 95, and a signal (release signal) is output from the switch 97. The controller 80 (FIG. 7) activates the electric motor 61 when the release signal is input and the main switch 22 (FIG. 3) is turned on. In other words, if the release signal is not input, the electric motor 61 is not started even when the main switch 22 is turned on. That is, in the cleaning machine 1 according to the present embodiment, the electric motor 61 is not started unless the opening 94 of the battery housing unit 90 is closed. The switch 97 is disposed inside the second case member 92 and is waterproof, so that it is not easily broken by a cleaning liquid or the like.

  As shown in FIG. 9, a battery terminal 98 is disposed in the battery housing portion 90, and when the secondary battery 62 is housed in the battery housing portion 90, the terminal of the secondary battery 62 is connected to the battery. The terminal 98 contacts and is electrically connected. As shown in FIG. 3, the lid 95 provided on the second case member 92 is substantially flush with the side surface of the main body 20 and forms a part of the outer peripheral surface of the main body 20. In this way, the first case member 91 and the second case member 92 of the battery housing portion 90 are configured such that the end surfaces of each other are abutted along the direction in which the secondary battery 62 is inserted and removed. In a configuration in which each case is abutted in a direction intersecting (orthogonal) with the insertion / removal direction of the secondary battery 62 (the left-right direction in FIG. 9 or the depth direction in FIG. 9), the lid 95 and the battery housing 90 Even if a sealing member is provided between the two, the cleaning liquid or the like is likely to enter the battery housing space from the mating surface of the case. On the other hand, in the said structure in this embodiment, since the mating surface is located inside the main body 20, the penetration of the cleaning liquid into the battery housing space can be suppressed. Further, the two rubber packings 93 and 96 can ensure further waterproofness.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, in the cleaning machine 1 according to the embodiment, the electric motor 61 and the controller 80 are air-cooled, but the electric motor 61 and the controller 80 may be water-cooled. For example, as shown in FIG. 10, the layout of the inflow path 26 is changed so that the aluminum pipe forming the inflow path 26 and the electric motor 61 are in direct contact. Then, the inflow path 26 and the electric motor 61 are thermally connected, and the electric motor 61 is cooled by heat exchange with the cleaning liquid in the inflow path 26. That is, the inflow path 26 and the electric motor 61 are directly heat-connected, and the electric motor 61 is water-cooled. At that time, if the aluminum pipe is also brought into contact with the controller 80, the controller 80 can also be cooled with water.

  Further, as shown in FIG. 11, the heat sink 100 may be disposed between the inflow path 26 and the electric motor 61 so that the aluminum pipe forming the inflow path 26 and the electric motor 61 are in indirect contact with each other. Good. Then, the inflow path 26 and the electric motor 61 are thermally connected via the heat sink 100. In this case, the electric motor 61 is cooled by indirect heat exchange with the cleaning liquid via the heat sink 100. At that time, if the heat sink is also arranged on the controller 80 and the heat sink and the aluminum pipe are brought into contact with each other, the controller 80 can also be cooled with water.

  The pipe member forming the inflow path 26 is not limited to an aluminum pipe, and can be changed to a copper pipe, a brass pipe, a resin pipe, or the like. The pump 60 can be changed to a gear pump or a diaphragm pump.

  In the embodiment, the main body 20 and the tank 50 are separate. However, the main body 20 and the tank 50 may be integrated. For example, an embodiment in which the tank 50 is accommodated in the main body 20 is also included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Washing machine 20 Main body 21 Connection port 22 Main switch 23 Adjustment dial 24 Recessed part 25 Buckle 26 First flow path (inflow path)
27 Second channel (outflow channel)
28 Connection plug 30 Cleaning gun 31 Trigger 40 Pressure hose 50 Tank 51 Protruding part 52 Locking part 53 Handle 54 Cap 55 Check valve 55a Valve body 55b Valve seat 60 Pump 60a Cylinder 61 Electric motor 61a Output shaft 62 Secondary battery 63 Conversion Mechanism 64 Crankshaft 65 Connecting rod 66 Counterweight 70 Case (motor case)
71 Fan 72, 73 Rib 80 Controller 90 Battery housing portion 91 First case member 92 Second case member 93, 96 Rubber packing 94 Opening 94a Locking recess 95 Lid 95a Hook 97 Switch 98 Battery terminal 100 Heat sink

Claims (14)

A cleaning machine that pressurizes and discharges cleaning liquid,
A tank in which the cleaning liquid is stored;
A pump for pressurizing the cleaning liquid supplied from the tank through the inflow path;
An electric motor as a drive source of the pump;
A main body for housing the tank, the pump and the electric motor;
A fan that rotates integrally with the output shaft of the electric motor and forms an air flow inside the main body,
The inflow path and the electric motor are located on the flow path of the air flow;
washing machine. A control unit for controlling the electric motor;
The controller is located on the flow path of the air flow;
The washer according to claim 1. The air flow circulates within the body;
The cleaning machine according to claim 2. A cleaning machine that pressurizes and discharges cleaning liquid,
A tank in which the cleaning liquid is stored;
A pump for pressurizing the cleaning liquid supplied from the tank through the inflow path;
An electric motor as a drive source of the pump;
A control unit for controlling the electric motor;
A main body that houses the tank, the pump, the electric motor, and the control unit;
A fan that rotates integrally with an output shaft of the electric motor and circulates an air flow inside the main body,
washing machine. The inflow path, the electric motor, and the control unit are located on the flow path of the air flow.
The washer according to claim 4. A cleaning machine that pressurizes and discharges cleaning liquid,
A tank in which the cleaning liquid is stored;
A pump for pressurizing the cleaning liquid supplied from the tank through the inflow path;
An electric motor as a drive source of the pump;
A suction port and a suction port provided in the electric motor;
A fan that rotates integrally with the output shaft of the electric motor, flows out from the suction port to the outside of the electric motor, and forms an air flow that flows into the electric motor from the suction port;
At least a part of the air flow flows into the electric motor from the suction port after being cooled by heat exchange with the cleaning liquid in the inflow path.
washing machine. At least a part of the pipe member forming the inflow path is disposed on the flow path of the air flow;
The washer according to claim 6. A flow path forming member that forms the flow path of the airflow is provided around the electric motor.
The washer according to claim 7. The flow path forming member is a rib formed integrally with a main body that houses the pump, the electric motor, and the fan,
The rib is disposed between the inflow path and the electric motor so as to separate the inflow path and the electric motor.
The washing machine according to claim 8. A cleaning machine that pressurizes and discharges cleaning liquid,
A tank in which the cleaning liquid is stored;
A pump for pressurizing the cleaning liquid supplied from the tank through the inflow path;
An electric motor which is a drive source of the pump,
The inflow path and the electric motor are thermally connected, and the electric motor is cooled by heat exchange with the cleaning liquid in the inflow path.
washing machine. The inflow path and the electric motor are thermally connected via a heat sink;
The washing machine according to claim 10. A battery housing part capable of taking in and out a secondary battery as a power source of the electric motor;
The battery housing portion includes a first case member, a second case member that is abutted against the first case member along a direction in which the secondary battery is put in and out, an end surface of the first case member that is abutted against each other, and the A first seal member interposed between the end surface of the second case member,
The washer according to any one of claims 1 to 11. The second case member is
An opening through which the secondary battery is inserted and removed;
A lid for opening and closing the opening;
A second seal member interposed between the inner surface of the lid and the peripheral edge of the opening facing the inner surface when the opening is closed by the lid;
The washer according to claim 12. Having a detector for detecting that the opening is closed;
Unless the detection unit detects that the opening is closed, the electric motor is not started,
The washing machine according to claim 13.

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