JP2007211695A - Water supplying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water supplying device provided with a cooling mechanism which has a simple structure and low noise, allows the water supplying device to be downsized, and efficiently and accurately cools heating body components such as an inverter element. <P>SOLUTION: The water supplying device 1 is provided with: a pump 10; a delivery pipe arrangement 20 connected to a delivery opening 11b of the pump 10; a motor 30 driving the pump 10; and an inverter device 40 supplying electric power to the motor 30, and is also provided with the cooling mechanism which cools heating body components such as the motor 30 and the inverter device 40. The cooling mechanism is provided with a heat transfer plate 6 connecting the inverter device 40 and the delivery pipe arrangement 20, water cooling of the inverter element mounted in the inverter device 40 is carried out by delivery water in the delivery pipe arrangement 20 via the heat transfer plate 6, air in the water supplying device 1 is cooled by the heat transfer plate 6 by exposing at least one part of the heat transfer plate 6 into a space in the water supplying device 1, and temperature rising of the motor 30 and the inverter device 40 is suppressed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a water supply apparatus that sucks and pressurizes water with a pump and supplies the water to a predetermined demand place, and more particularly, to a water supply apparatus that includes a cooling mechanism that cools heating element parts that generate heat during operation of the water supply apparatus. It is.

  2. Description of the Related Art Conventionally, there is a water supply device that pressurizes water supplied from a water main or a water receiving tank to a predetermined pressure to supply water to a terminal demand place such as an apartment house or a building. This type of water supply device includes a pump that sucks and pressurizes water to supply water, a motor that drives the pump, an inverter device that supplies electric power to the motor, and the like.

  And, for example, in a water supply device connected to the water main, the terminal pressure constant control method and the discharge pressure constant control method so that the terminal consumer can always supply a constant water pressure against the pump inflow pressure that varies from moment to moment. Is adopted. That is, the rotational speed of the motor is controlled by supplying AC and DC power of variable frequency and voltage to an induction motor and a DCBL (DC brushless motor) that drive a pump by an inverter device. Accordingly, an inverter device is indispensable for this type of water supply device, but the inverter device includes an inverter element (power element) such as an IGBT (insulated gate bipolar transistor), and generates heat when the motor is driven. It is a part. For this reason, various cooling mechanisms for cooling heating element parts such as the inverter device are employed in the water supply device.

  As this cooling mechanism, there is a mechanism in which a heat sink is attached to the inverter device and the heat sink is forcibly cooled by blowing air from a cooling fan. Although this air-cooling type cooling mechanism has the advantage that the temperature control of the inverter element can be easily performed, on the other hand, in the high-power inverter device, heat dissipation becomes large, so the heat sink must be enlarged, and the cooling mechanism There was a problem that the installation space would become large. In addition, in order to sufficiently cool the heat sink, a large volume of air is required, which causes a problem that the noise of the cooling fan increases. In addition, since the cooling fan is installed so as to blow the air toward the heat sink in order to effectively cool the inverter element, the control circuit unit of the inverter device is not sufficiently cooled, and a capacitor mounted on the control circuit unit, etc. There was also a concern that the lifetime of the electronic parts would be shortened.

  On the other hand, as another cooling mechanism, for example, as shown in Patent Document 1, there is a mechanism that forcibly cools water by passing water through a heat sink in which an inverter device is mounted. This water-cooling type cooling mechanism has high cooling efficiency, low noise, and can reduce the area of the heat sink itself. However, it is necessary to form a water channel in the heat sink, and piping for water supply to the heat sink is required. Further, since the inverter device is likely to be overcooled, a temperature sensor for preventing this and an electromagnetic for opening and closing the water channel are required. A mechanism such as a valve is also required. For this reason, the structure of the entire water supply apparatus becomes complicated, and the size cannot be reduced, resulting in an increase in manufacturing cost. There is also a problem that maintenance of the water supply apparatus takes time.

In this type of water supply device, since the motor that drives the pump is also a heating element, the air around the motor is provided by an external fan attached to the outside of the motor or an internal fan installed integrally with the rotor inside the motor. A cooling mechanism for cooling the motor is provided. However, this cooling mechanism has a problem that proper cooling cannot be performed when the air temperature around the motor is high. In particular, in a water supply apparatus provided with a cover that covers the periphery of the component equipment, the temperature in the cover is likely to rise, so the motor cooling effect is reduced. On the other hand, in order to obtain a sufficient cooling effect of the motor, it is necessary to further install a mechanism such as a fan for taking outside air into the cover to suppress the temperature rise, and there is a problem that the structure of the water supply device becomes complicated. It was.
JP-A-9-107683

  The present invention has been made in view of the above-mentioned points, and its purpose is to simplify the structure, reduce the size of the water supply device, reduce noise, and cool the heating element parts such as the motor and the inverter device with high efficiency and high accuracy. It is providing the water supply apparatus provided with the cooling mechanism.

  In order to solve the above-described problem, the invention according to claim 1 of the present application is a water supply apparatus that includes a pump, feeds the water by suction, pressurizes and discharges the water, and supplies the water to a predetermined demand place. A heating element part that generates heat when the water supply device is operated, a water supply part through which the pump water flows, and a heat conduction member that connects the heating element part and the water supply part. The heat generating part of the heat generating element is cooled by water supplied from the pump via a conductive member, and at least a part of the heat conductive member is exposed to the space inside and / or outside the water supply device. It is characterized by. Here, the water supply component includes various components through which the water supply of the pump circulates, such as a pump casing in the water supply device, piping connected to the pump casing, or a tank for storing the water supply. .

  The invention according to claim 2 is the water supply device according to claim 1, wherein the heating element component is a motor that drives the pump and / or an inverter device that supplies electric power to the motor, and the water supply component is The pump casing is at least one of a pump casing, a suction pipe connected to a suction port of the pump casing, and a discharge pipe connected to a discharge port of the pump casing.

  According to a third aspect of the present invention, in the water supply apparatus according to the first or second aspect, each of the constituent devices is housed and arranged inside a cover.

  The invention according to claim 4 is the water supply device according to claim 3, wherein the heat conducting member is in contact with the cover, or the heat conducting member is a part or the whole of the cover. And

  According to a fifth aspect of the present invention, in the water supply device according to the third or fourth aspect of the present invention, a cooling fan installed in the cover is provided, and air in the cover is convected by an air flow generated by the cooling fan. It is characterized by.

  The invention according to claim 6 is the water supply apparatus according to claim 5, wherein the cooling fan is a motor cooling fan attached to one end of a rotating shaft of the motor.

  The invention according to claim 7 is the water supply apparatus according to any one of claims 2 to 6, wherein the inverter device includes a drive circuit unit on which an inverter element as the heat generating unit is mounted, and the drive circuit unit. A control circuit unit for controlling power supply, and at least the drive circuit unit and the water supply component are connected by the heat conducting member.

  According to the invention described in claim 1 of the present application, the heat conducting member that connects the heat generating component and the water feeding component is provided, and the heat generating portion of the heat generating component is cooled by water feeding of the pump through the heat conducting member. It is possible to provide a water supply apparatus including a cooling mechanism that can cool (cool) water by heat pump components with a simple configuration and low noise. Thereby, since the heat generated by the heating element part can be released into the water supply, the cooling effect of the heating element part is increased. Moreover, since at least a part of the heat conducting member is exposed in the space inside and / or outside of the water supply device, heat exchange can be performed between the heat conducting member and the air. Therefore, when the temperature of the heat conducting member is lower than the temperature of the exposed space (for example, when the heat conducting member is exposed to the internal space of the water supply device and the surface temperature of the heat conducting member is lower than the temperature inside the water supply device). The ambient air is cooled by the heat conducting member, and the temperature rise of the heating element can be suppressed by the cooled air. On the other hand, when the temperature of the heat conduction member is higher than the temperature of the exposed space (for example, when the heat conduction member is exposed to the external space of the water supply device and the surface temperature of the heat conduction member is higher than the temperature outside the water supply device) The heat conducting member is cooled by the surrounding air. By these, since it becomes a hybrid cooling system which served as both a water cooling system and an air cooling system, a heating element part can be cooled effectively.

  Further, according to the invention described in claim 1 of the present application, a dedicated cooling fan for cooling the heating element parts necessary for the conventional air cooling type cooling mechanism becomes unnecessary, and is necessary for the conventional water cooling type cooling mechanism. Since a cooling water pipe and a temperature control mechanism are not required, the structure of the cooling mechanism for cooling the heating element parts can be simplified. Therefore, the water supply device can be reduced in size, the manufacturing cost can be reduced, and the maintenance work can be reduced.

  Furthermore, according to the invention described in claim 1 of the present application, when the heating element component is water-cooled through the heat conducting member, heat exchange can be performed between the heat conducting member and the air. Compared with the so-called direct cooling method in which water is passed through the heat sink, the heating element parts can be cooled more slowly. Therefore, overcooling of the heating element part can be effectively prevented, and a burden due to a rapid temperature difference applied to the heating element part can be reduced. Further, since the heat generation amount of the heating element parts increases or decreases according to the amount of water supplied by the pump, it is possible to always perform appropriate cooling according to the heat generation amount.

  According to the invention described in claim 2 of the present application, the heating element component is a motor that drives the pump and / or an inverter device that supplies electric power to the motor, and the water supply component is the pump casing of the pump, the pump casing Since it is at least one of the suction pipe connected to the suction port and the discharge pipe connected to the discharge port of the pump casing, the motor and the inverter device that generate heat during operation of the water supply device can be effectively supplied by pumping water. It becomes possible to cool.

  According to the invention described in claim 3 of the present application, in the water supply device in which each component device is housed and arranged inside the cover, when the temperature in the cover is higher than the surface temperature of the heat conducting member, Since air is cooled by the heat conducting member, a temperature rise in the cover can be prevented, thereby preventing a temperature rise of the heating element part. Moreover, since the heat generated by the heating element is released into the water supply via the heat conducting member, the temperature rise in the cover can also be prevented.

  According to the invention described in claim 4 of the present application, since the heat conducting member is in contact with the cover or the heat conducting member is a part or the whole of the cover, a part of the heat generated by the heating element part is covered with the cover. Therefore, the cooling effect of the heating element parts is increased.

  According to the invention described in claim 5 of the present application, the cooling fan installed in the cover is provided, and the air in the cover is convected by the air flow generated by the cooling fan. When air is cooled, local temperature rise in the cover can be prevented by diffusing the cooled air throughout the cover, and temperature rise of the heating element can be effectively suppressed. . Even if the cooling fan stops due to a failure, etc., since the heating element parts are cooled by the pump water supply, it is possible to avoid the temperature from rising immediately and becoming an abnormal state. It is possible to prevent the occurrence of problems such as stoppages.

  According to the invention described in claim 6 of the present application, since the cooling fan is a motor cooling fan attached to one end of the rotating shaft of the motor, the number of parts of the cooling mechanism can be reduced and the structure becomes simple. The water supply device can be downsized and maintenance work can be reduced.

  According to the invention described in claim 7 of the present application, the inverter device includes a drive circuit unit on which an inverter element that is a heat generating unit is mounted, and a control circuit unit that controls power supply by the drive circuit unit, and at least Since the drive circuit section and the water supply component are connected by a heat conducting member, the inverter element that is the heat generating section is effectively cooled, the temperature rise of the inverter device can be prevented, and the life of the inverter apparatus can be extended. Can do.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 to FIG. 4 are diagrams showing an arrangement configuration of internal devices of a water supply apparatus according to an embodiment of the present invention, FIG. 1 is a plan view of the water supply apparatus, FIG. 2 is a left side view, and FIG. 4 is a front view. This water supply device 1 is a so-called direct connection type (booster type) water supply device in which the suction side is directly connected to the water main, pressurizes the water, and supplies water to the terminal demand place such as an apartment house or a building. The two pumps 10 and 10 for supplying water, one discharge pipe 20 connected to the discharge side of the pumps 10 and 10, motors 30 and 30 for driving the pumps 10 and 10, and driving by the motors 30 and 30 In addition to the inverter devices 40 and 40 that supply electric power, a cooling mechanism that cools the motors 30 and 30 and the inverter devices 40 and 40 is provided. Pumps 10 and 10, motors 30 and 30, and inverter devices 40 and 40 all have the same configuration. In the description of the present embodiment, the arrangement of each component device will be described in a horizontally placed state where the surface shown in FIG. 1 of the water supply device 1 is a plane. It is also possible to install it in a vertical state with the surface shown in FIG.

  The internal device of the water supply apparatus 1 is accommodated in the cover 2. This cover 2 has a metal plate-like base member 3 horizontally installed on the bottom side of the water supply apparatus 1 shown in FIG. 3, and an L-shaped cross section erected at the four corners of the base member 3 shown in FIG. The side wall 4 fixed to the supporting member 8 and the lid member 5 that covers the upper end portion of the side wall 4 shown in FIGS. 2 and 3 are formed in a substantially rectangular box shape.

  As shown in FIG. 3, a discharge pipe 20 is installed on the upper surface side of the base member 3. The discharge pipe 20 is made of a metal material such as cast iron, the fixed portion 21 is fixed to the base member 3, extends in the horizontal direction as shown in FIG. 1, and the discharge ports 20 b and 20 b at both ends thereof are left and right. It protrudes from the side walls 4 and 4 to the outside of the cover 2. Pumps 10 are attached in parallel to the upper portion of the discharge pipe 20. A suction pipe 12 is connected to the suction port 11 a of the pump casing 11 of the pump 10, and the suction port 12 a of the suction pipe 12 projects from the side wall 4 and opens. The suction port 12a is connected to a pipe line (not shown) such as a water main at the site where the water supply apparatus 1 is installed. On the other hand, the discharge port 11b of the pump casing 11 is connected to the pump connection port 20a of the discharge pipe 20 as shown in FIG.

  An impeller (not shown) is installed in the pump casing 11, and the rotating shaft of the impeller is connected to one end of the rotating shaft (not shown) of the motor 30. On the other hand, a cooling fan 33 is attached to the other end of the rotating shaft of the motor 30, and a fan guard 34 surrounding the outside of the cooling fan 33 is installed. A plurality of cooling fins 31a are formed on the outer surface of the motor casing 31 of the motor 30, and a cylindrical motor cover 32 is attached so as to surround the outer periphery of the fins 31a. The cooling fan 33 rotates as the motor 30 is driven, and the generated airflow (wind) is sent toward the fins 31a to cool the motor 30. Note that reference numeral 35 in FIG. 1 is a reactor for the motor 30.

  On the other hand, as shown in FIG. 3, a thin plate heat transfer plate (heat conducting member) 6 whose one end is connected and fixed to the discharge pipe 20 by a fixing portion 21 is attached to the upper surface of the base member 3. . The heat transfer plate 6 is formed of a metal material having excellent thermal conductivity, and is a plate made of aluminum in the present embodiment.

  Inverter devices 40 and 40 are attached to the upper surface of the heat transfer plate 6. The inverter device 40 includes a drive circuit unit 42 and a control circuit board (control circuit unit) 44. The drive circuit unit 42 is tightly fixed to the upper surface of the heat transfer plate 6 via a plate-like mounting member 41, and the control circuit board 44 is fixed to the mounting member 41 via a columnar support member 43, It is arranged away from the part 42. An inverter element such as an IGBT for supplying power to the motor 30 is mounted on the drive circuit unit 42, and various electronic components such as a capacitor 46 constituting a control circuit for controlling the inverter element are mounted on the control circuit board 44. Is installed. This inverter device 40 supplies drive power to the motor 30 via a cable 47 to drive the motor 30 at a variable speed.

  The water supply device 1 is provided with a cooling mechanism that cools heat generating components such as the motor 30 and the inverter device 40 that generate heat during operation of the water supply device 1. As described above, the cooling mechanism connects (thermally connects) the drive circuit unit 42 of the inverter device 40 and the discharge pipe 20 by the heat transfer plate 6, thereby connecting the inverter element (heat generation unit) of the drive circuit unit 42. The water is indirectly cooled by the discharged water in the discharge pipe 20. Moreover, since the surface other than the part to which the drive circuit part 42 is attached is exposed and this surface is in contact with the air inside the cover 2 of the water supply apparatus 1, the heat transfer plate 6 will be described in detail below. As described above, the air inside the cover 2 is cooled by the heat transfer plate 6 to reduce the temperature inside the cover 2, thereby suppressing the temperature rise of the motor 30 and the inverter device 40. . That is, this cooling mechanism constitutes a so-called hybrid cooling mechanism that combines a water cooling method and an air cooling method.

  On the other hand, as shown in FIGS. 1, 2, and 4, a control panel 50 is installed on the left side in the cover 2. As shown in FIG. 2, the control panel 50 includes a plate-like attachment member 52 attached to the upper surface of the base member 3 via support members 51, 51 having a substantially U-shaped cross section, on the attachment member 52. Each device is installed. That is, the attachment member 52 has a substantially L-shaped cross section as shown in FIG. 4, and a control board 53 on which various electronic components are mounted and a plate-like attachment member 54 are attached as shown in FIG. Yes. A breaker 55 and a capacitor 56, which is a component of a noise filter, are installed on the upper surface of the mounting member 54, and an iron core 57 constituting a noise filter and a substrate 58 on which various electronic components are mounted are mounted on the lower surface of the mounting member 54. It has been.

  Next, the operation | movement at the time of the driving | operation of the water supply apparatus 1 of the said structure is demonstrated. By supplying driving power from the inverter device 40 to the motor 30, the motor 30 is driven to operate the pump 10. As a result, water in the water main pipe is sucked and pressurized from the suction port 12a of the suction pipe 12 and discharged from the discharge port 11b to the discharge pipe 20. The two pumps 10 and 10 installed in parallel can be operated alternately or simultaneously. By operating the pump 10, the main body portion of the motor 30, the inverter elements of the drive circuit portion 42 of the inverter device 40, and the heat generating portions such as the capacitor 46 on the control circuit board 44 generate heat.

  In this water supply apparatus 1, the inverter element of the drive circuit unit 42 is water-cooled by the above-described cooling mechanism with the discharge water flowing through the discharge pipe 20 via the heat transfer plate 6. Thus, since the heat generated by the inverter element can be released into the discharge water, the cooling effect of the inverter element is increased as compared with the conventional air cooling system.

  At this time, the temperature in the cover 2 is raised by the heat generated by the motor 30 and the inverter element, and thus is higher than the surface temperature of the heat transfer plate 6. Therefore, the air around the heat transfer plate 6 in the cover 2 is cooled by the heat transfer plate 6. At the same time, the air flow generated by the cooling fan 33 that rotates as the motor 30 is driven flows through the internal space of the water supply device 1 toward the heat transfer plate 6 as shown by the arrow A in FIG. The air inside convects. As a result, the cooled air around the heat transfer plate 6 is diffused substantially throughout the cover 2, and the ambient temperature of the motor 30 and the inverter device 40 in the cover 2 can be lowered. Temperature rise can be suppressed. Since the air cooled by the heat transfer plate 6 is diffused by the cooling fan 33 and sent to the drive circuit unit 42, the cooling effect of the inverter element mounted thereon can be enhanced. Further, the electronic components such as the capacitor 46 on the control circuit board 44 are also cooled by the air in the cover 2, so that their temperature rise is prevented and the life can be extended. Further, the cooling effect of the motor 30 by the cooling fan 33 can be sufficiently exhibited. Therefore, the motor 30 and the inverter device 40 can be more effectively cooled together with the water cooling effect.

  Even when the cooling fan 33 stops due to a failure or the like, the drive circuit unit 42 is water-cooled with the discharge water in the discharge pipe 20 via the heat transfer plate 6, so that the temperature of the inverter element is immediately Since it can avoid rising and becoming an abnormal state, generation | occurrence | production of malfunctions, such as a failure stop of the water supply apparatus 1, can be prevented.

  Further, in this cooling mechanism, the water cooling of the inverter element by the discharged water is indirectly performed through the heat transfer plate 6, so that the inverter element can be cooled moderately and gently as compared with the conventional direct water cooling method. It becomes. Therefore, overcooling of the inverter element can be prevented, and the burden on the inverter element due to a rapid temperature change can be reduced. The amount of heat generated by the inverter element increases / decreases in accordance with the amount of water delivered by the pump 10, but the amount of water in the discharge pipe 20 also increases / decreases accordingly. Therefore, it is always possible to automatically perform appropriate cooling according to the heat generation amount of the inverter element.

  As described above, the cooling mechanism included in the water supply apparatus 1 connects the discharge pipe 20 and the drive circuit unit 42 with the heat transfer plate 6, and the drive circuit unit 42 is discharged from the discharge pipe 20 through the heat transfer plate 6. The inverter element is cooled with water, and the heat transfer plate 6 is used to cool the air in the cover 2. Therefore, a separate piping for cooling water necessary for the conventional direct water cooling method and a temperature sensor are used. And a temperature control mechanism such as a solenoid valve is not required, and a dedicated cooling fan for cooling the inverter elements required in the conventional air cooling method is also unnecessary. Therefore, the structure of the water supply apparatus 1 becomes simple, the size reduction can be achieved, and the manufacturing cost can be reduced. In addition, since the configuration of the water supply apparatus 1 is simplified, the maintenance burden can be reduced.

  Moreover, in the water supply apparatus 1, since the cooling fan 33 for cooling the motor 30 attached to one end of the rotating shaft of the motor 30 is used as a cooling fan for convection of the air in the cover 2, the structure of the cooling mechanism is simple. Become. Moreover, by providing the cover 2, it becomes possible to install the water supply apparatus 1 in the outdoors exposed to a wind and rain. Moreover, the noise which generate | occur | produces at the time of the driving | operation of the water supply apparatus 1 by the cover 2 can be reduced. On the other hand, even if the component devices are accommodated in the cover 2, the air inside the cover 2 is cooled by the cooling mechanism and heat generated by the inverter element is released to the discharge water side. There is no risk of temperature rise.

  In the water supply apparatus 1, the heat transfer plate 6 is attached in contact with the base member 3, which is a part of the cover 2. Therefore, a part of the heat generated by the inverter element is transferred from the heat transfer plate 6 to the base member 3. It becomes possible to discharge | release also to the external space of the water supply apparatus 1 via this. That is, when the temperature outside the cover 2 is lower than the surface temperature of the heat transfer plate 6, there is an effect of cooling the heat transfer plate 6 by the air outside the cover 2. Can be increased.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. It should be noted that any shape, structure, and material not directly described in the specification and drawings are within the scope of the technical idea of the present invention as long as the effects and advantages of the present invention are exhibited.

  For example, although the case where the inverter device 40 is cooled (water-cooled) has been described in the above embodiment, the heating element component cooled by the cooling mechanism included in the water supply device of the present invention is not limited to the inverter device 40, and other than that. For example, it is also possible to connect the motor 30 and the discharge pipe 20 with the heat transfer plate 6 as a mechanism for cooling the motor 30 as a heating element part. In addition to the motor 30, any component having a heat generating portion that generates heat during operation of the water supply apparatus can be configured to cool other components as a heat generating component. When the inverter device 40 is cooled, not only the drive circuit unit 42 but also the control circuit board 44 can be connected to the heat transfer plate 6.

  In addition, the component connected to the heating element component via the heat transfer plate 6 is not limited to the discharge pipe 20 as long as it is a water supply part through which the water supplied by the pump 10 circulates. It is possible to connect the casing 11 or various water supply components such as a tank or other piping for storing water supply that is not provided in the present embodiment. That is, as a configuration of the cooling mechanism of the present invention, any one of the water supply components in the water supply device for supplying water that is the working medium of the pump and the heating element components may be connected by the heat conducting member.

  The heat transfer plate 6 is not limited to the aluminum plate material of the above embodiment as long as it is made of a material having good thermal conductivity, and may be other materials such as copper. Further, the shape and size of the heat transfer plate 6 are not limited to the above embodiment. In the above-described embodiment, the configuration in which the heat transfer plate 6 is installed in contact with the base member 3 has been described. However, the heat transfer plate 6 can be installed in a state of being separated from the base member 3, and these are not necessarily the same. It does not have to be in contact. On the other hand, the base member 3 and the entire cover 2 which are a part of the cover 2 can be configured to be used as the heat conducting member of the present invention. That is, in this case, the heat transfer plate 6 and the base member 3 or the cover 2 are integrally formed.

  In the water supply apparatus of the above embodiment, the case where the heat transfer plate 6 cools the air in the cover 2 has been described as an example of heat exchange between the heat transfer plate 6 and the surrounding air, but the temperature in the cover 2 is transferred. On the contrary, when the surface temperature of the hot plate 6 is lower, the heat transfer plate 6 is cooled by the air in the cover 2. On the other hand, when the heat transfer plate 6 is exposed to the air outside the water supply device directly or through another member such as the cover 2, the temperature outside the water supply device can be lower than the surface temperature of the heat transfer plate 6. For example, if the heat transfer plate 6 is cooled by the external air and the temperature outside the water supply device is higher than the surface temperature of the heat transfer plate 6, the heat transfer plate 6 is kept warm. In particular, when the temperature of the water supplied by the pump 10 is low, the temperature of the heat transfer plate 6 becomes too low, and the heating element parts are likely to be supercooled. However, in the cooling mechanism of the present invention, the heat transfer plate is used as described above. By performing heat exchange between 6 and ambient air, it is possible to effectively prevent overcooling of the heating element parts.

  Moreover, although the case where the air in the cover 2 is convected using the airflow generated by the cooling fan 33 for cooling the motor 30 has been described in the above embodiment, a separate cooling fan is also provided in the water supply apparatus 1 in addition to this. The air in the cover 2 may be convected by the air flow generated by the cooling fan. In that case, it is also possible to install this cooling fan so as to take in air from the outside of the water supply apparatus 1. In addition, the thermistor is preferably installed on the control circuit board 44, and the driving circuit of the cooling fan is turned on and off by the thermistor to control the operation. Or you may comprise so that it may circulate by a natural convection, without installing the cooling fan which convects the air in the cover 2. FIG.

It is a front view which shows the arrangement configuration of the internal apparatus of the water supply apparatus concerning one Embodiment of this invention. It is a left view which shows the arrangement configuration of the internal apparatus of a water supply apparatus. It is a right view which shows the arrangement configuration of the internal apparatus of a water supply apparatus. It is a bottom view which shows the arrangement configuration of the internal apparatus of a water supply apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water supply apparatus 2 Cover 3 Base member 4 Side wall 5 Lid member 6 Heat-transfer plate (heat conduction member)
8 Support member 10 Pump 11 Pump casing 12 Suction pipe 20 Discharge pipe 21 Fixing part 30 Motor 31 Motor casing 31a Fin 32 Motor cover 33 Cooling fan 35 Reactor 40 Inverter device 41 Mounting member 42 Drive circuit part 43 Support member 44 Control circuit board ( Control circuit section)
46 Capacitor 47 Cable 50 Control panel 51 Support member 52 Mounting member 53 Board 54 Mounting member 55 Breaker 56 Noise filter 57 Iron core 58 Board

Claims (7)

In a water supply apparatus comprising a pump, supplying water by sucking and pressurizing and discharging water with the pump, and supplying water to a predetermined demand place,
A heat-generating component that generates heat when the water supply device is operated; a water-feeding component that circulates the pump water; and a heat-conducting member that connects the heat-generating component and the water-feeding component. While cooling the heat generating part of the heating element part by water supply of the pump through the member,
At least a part of the heat conducting member is exposed to a space inside and / or outside the water supply device. In the water supply apparatus of Claim 1,
The heating element component is a motor that drives the pump and / or an inverter device that supplies power to the motor,
The water supply device according to claim 1, wherein the water supply component is at least one of a pump casing of the pump, a suction pipe connected to a suction port of the pump casing, and a discharge pipe connected to a discharge port of the pump casing. In the water supply apparatus of Claim 1 or 2,
The water supply device according to claim 1, wherein each of the component devices is housed and arranged in a cover. In the water supply apparatus of Claim 3,
The water supply device, wherein the heat conducting member is in contact with the cover, or the heat conducting member is a part or the whole of the cover. In the water supply apparatus of Claim 3 or 4,
A water supply apparatus comprising: a cooling fan installed in the cover, wherein air in the cover is convected by an air flow generated by the cooling fan. The water supply apparatus according to claim 5,
The water supply device according to claim 1, wherein the cooling fan is a motor cooling fan attached to one end of a rotating shaft of the motor. In the water supply apparatus in any one of Claim 2 thru | or 6,
The inverter device includes a drive circuit unit on which an inverter element that is the heat generating unit is mounted, and a control circuit unit that controls power supply by the drive circuit unit,
At least the drive circuit unit and the water supply component are connected by the heat conducting member.

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