JP2007170897A - Liquid-receiving reservoir for liquid sensor, and cooling device equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid-receiving reservoir for efficiently transferring dripping liquid to the detection region, for detecting the liquid, in a short time, and to provide the cooling device provided with the same. <P>SOLUTION: The liquid-receiving sensor comprises a flat first liquid-receiving surface 2a on one side; a first liquid-receiving part 2 provided with the outer peripheral wall 2b along the outer periphery of the first liquid-receiving surface 2a; a three tabular protrusions 5 formed in the first liquid-receiving surface 2a; two of the first groove parts 5a held inbetween the tabular protrusions 5; and a sensor fixing part 4, communicating with the first groove part 5a and fixing a liquid sensor 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a liquid sensor receiving container for receiving a dropped liquid and transferring the liquid to a detection region of a liquid sensor and a cooling device including the same, and is disposed inside a casing of an electronic device, for example. It is used when detecting leakage of liquid refrigerant in a cooling device used when cooling a heat-generating electronic component such as an ultra-compact processing unit (hereinafter referred to as MPU) using the circulation of liquid refrigerant. .

  Recently, the speed of data processing in computers has been very rapid, and the clock frequency of MPU has become much higher than before.

  As a result, the amount of heat generated by the MPU increases, and not only the conventional method of dissipating heat by bringing a heat sink having a radiation fin into contact with the heat generator, but also a method of directly cooling the heat sink with a fan, or a heat receiver and a radiator A heat sink module in which the heat sink is thermally connected using a heat pipe is configured, and a method of forcibly cooling the heat radiating body by blowing air from a fan is employed.

  Furthermore, with the recent increase in processing speed, processing capacity, and image processing speed in semiconductor integrated circuits, the liquid refrigerant circulation that has been used in the field of large-sized computers has been used. Efficient cooling devices are beginning to be installed in electronic devices such as desktop PCs and PC servers that are relatively portable.

  In the future, each of the heat receiving body and the heat radiating body performs efficient heat exchange with the liquid refrigerant having high thermal conductivity, and at the same time uses a pump to circulate and drive the liquid refrigerant, so that the heat receiving body and the heat radiating body A cooling device or the like is also indispensable for transporting heat in the direction of, efficiently transferring the heat of the heating element to the radiator, and further dissipating the heat to the outside.

  In the future, cooling devices that use a pump to forcibly circulate liquid refrigerant with high thermal conductivity and efficiently exchange heat between the heat receiving body and the heat radiating body will become indispensable. There is a further need to improve the cooling capacity and to reduce the size and weight.

  In addition, such a cooling device requires a cooling device that can detect liquid refrigerant leakage early and reliably for the purpose of improving reliability. For example, as disclosed in (Patent Document 1), as a conventional technique capable of detecting a liquid refrigerant, even if leakage of a liquid refrigerant occurs for some reason in a plurality of cooling elements, a liquid sensor is provided in the housing for an early stage. There is known a cooling device capable of detecting the above.

  11 (a) and 11 (b) are embodiments shown in (Patent Document 1) of the main part of the cooling device described in the embodiment (Patent Document 1) of FIG. 11 (a). A cross-sectional view and a front view of the cooling device in FIG.

  As shown in FIG. 11A, a plurality of integrated circuit elements 51 are mounted on the surface of the module substrate 50. The cold plate 52 represents a cooling body of the integrated circuit element 51 that is a heat generating electronic component, and has a flow passage 53 through which liquid refrigerant passes. The cold plate 52 has a plurality of cooling elements 54 corresponding to each of the integrated circuit elements 51 on one surface thereof.

The cold plate 52 is fixed to the module substrate 50 by the housing 55 so that the tops of the cooling elements 54 are in close contact with the integrated circuit elements 51, respectively.

  Here, the housing 55 has, for example, a frame shape along the outer peripheral edges of the module substrate 50 and the cold plate 52, and the flow passages 53 communicate with the inside of each cooling element 54. By passing the liquid refrigerant, the integrated circuit element 51 can be efficiently cooled.

  Further, as shown in FIG. 11B, a plurality of cooling elements 54 are provided on the cold plate 52, and the liquid sensor 56 is accommodated in the housing 55 so as to be positioned below the cooling element 54. Yes. In the present embodiment, since the liquid refrigerant is water, for example, a sensor that detects a change in electrical resistance due to adhesion of water can be employed as the liquid sensor 56.

  As shown in FIG. 11A, the liquid sensor 56 includes a strip-shaped insulator substrate 56a fixed to the cold plate 52 and at least two surfaces formed on the surface of the insulator substrate 56a on the cooling element 54 side. And a conductor pattern 56b.

  According to this configuration, the adhesion of water to the liquid sensor 56 can be detected based on the magnitude of the impedance between the two conductor patterns 56b.

  That is, according to this embodiment, since the liquid sensor 56 is provided in the housing 55, the time from the occurrence of water leakage to its detection can be greatly shortened.

  On the other hand, although it does not correspond to the liquid refrigerant leakage detection of the cooling device as described above, for example, as disclosed in (Patent Document 2), the semiconductor device installed in a slightly floating state on the floor surface In addition, in order to detect liquid leaks from pipes and pipes, members for attaching a liquid sensor that optically detects the presence or absence of leaks to a floor surface that tends to leak or a tray placed there are also known. Yes.

  12 (a) and 12 (b) show an embodiment shown in (Patent Document 2). The liquid sensor main body described in the embodiment of (Patent Document 2) in FIG. 12 (a) is used as a standby member. A cross-sectional view in the middle of mounting on the device and a cross-sectional view in a state after the liquid sensor main body of FIG. 12B is attached to the standby member will be described.

  The liquid sensor according to this embodiment is detachable from the surface to be submerged M, detects a liquid leak on the surface to be submerged M, and waits to be fixed on the surface to be submerged M. The receiving member 100, the liquid sensor main body 110 provided with the liquid leakage detecting means, and the standby member 100 can be attached and detached while moving the liquid sensor main body 110 in the direction indicated by the arrow parallel to the surface to be submerged M. And a fitting means.

  The standby member 100 includes a male screw shaft 101 erected in a state of being fixed in advance on the surface to be submerged M and a nut 109 screwed into the upper end of the male screw shaft 101 in advance prior to assembly of the liquid sensor main body 110. The mounting member 102 is fixed by tightening the nut 109.

  The attachment member 102 is made of a synthetic resin and has a substantially rectangular parallelepiped shape as a whole, and a bolt hole 103 penetrating in the vertical direction is formed, and a metal cylinder 104 is fixed to the bolt hole 103. .

  In addition, a flat reflector 105 that is in close contact with the lower surface of the mounting member 102 and extends to the rear of the mounting member 102 (leftward in FIG. 12A) is fixed by caulking. Further, the reflection plate 105 is made of a metal plate material, and the upper surface (surface) thereof has a color with high reflectivity (for example, silver or white).

  On both the left and right side surfaces of the mounting member 102, guide ribs (not shown) extending linearly in the front-rear direction (a direction parallel to the submerged surface M with the mounting member 102 fixed to the submerged surface M). In addition to being formed, a locking projection (not shown) is formed at a position that is above the guide ribs and relatively near the front end, and a fitting recess 108 is formed on the rear surface.

  The liquid sensor main body 110 includes a case 111 having a substantially rectangular parallelepiped shape with an open top surface, a lid 112 for closing the opening of the case 111 in a liquid-tight state, a circuit board 113 accommodated in the case 111, and a circuit board. And a cable (not shown) connected to 113.

  Here, the case 111 is made of a synthetic resin material having translucency, and the bottom surface of the case 111 is so small that it does not appear in the drawing with respect to the top surface of the reflection plate 105 in a state assembled to the mounting member 102. A detection surface 115 is formed opposite to each other with a gap.

  A pair of left and right arm portions 116 project from the front surface of the case 111, and a guide groove 117 extending linearly in the front-rear direction is formed on the inner surface of each arm portion 116, and the attachment member 102. A locking groove 118 that can be locked with the locking protrusion is formed.

  Further, a fitting protrusion 119 is formed at a position between the arm portions 116 on the front surface of the case 111.

  The circuit board 113 is fixed in the case 111, and the light emitting unit 120 and the light receiving unit 121 are attached to the lower surface of the circuit board 113 so as to be positioned above the detection surface 115.

  The cable is connected to a detection circuit (not shown) and the circuit board 113, and sends an electrical signal for emitting light to the light emitting unit 120 and also according to the intensity of light received by the light receiving unit 121. It has a function of signal transmission for sending the electrical signal to the detection circuit.

  Such a cable is led out of the liquid sensor main body 110 through a cylindrical lead-out portion protruding from the side surface of the case 111. The lead-out direction of the cable is substantially parallel to the surface to be submerged M when the liquid sensor main body 110 is fixed to the attachment member 102.

  Then, when the liquid sensor main body 110 is assembled to the attachment member 102 fixed to the surface to be submerged M, the liquid sensor main body 110 can be used. In this state, when there is no liquid leakage on the surface to be immersed M, the light emitted from the light emitting unit 120 is totally reflected by the detection surface 115 and received by the light receiving unit 121.

  On the other hand, when the liquid leaks onto the surface to be submerged M, the liquid is drawn into the gap between the reflecting plate 105 and the detection surface 115 by capillary action, and the drawn liquid is reflected in the reflecting plate 105. And the detection surface 115. In this case, most of the light emitted from the light emitting unit 120 is transmitted through the detection surface 115 and the liquid, is reflected by the reflection plate 105, passes through the liquid and the detection surface 115 again, and is received by the light receiving unit 121. However, the intensity of the light received at this time is weaker than that of the case where the light is totally reflected by the detection surface 115.

  The intensity of light received by the light receiving unit 121 is sent as an electrical signal to the detection circuit via a cable, and the detection circuit detects the presence or absence of liquid leakage based on the sent electrical signal.

Furthermore, in (Patent Document 3), the attachment member of the liquid sensor main body is detachable from the standby member, and after detecting the leakage of the liquid and repairing the cause of the leakage, An improved configuration is disclosed that removes the liquid remaining in the tray and allows it to be dried and returned to its original state, and is not easily removed once attached.
JP-A-7-263603 (5th page, FIG. 2 and FIG. 3) JP 2002-116138 A (FIG. 12 on page 8, FIG. 11 on page 10) JP 2004-28921 A (page 10, FIG. 1)

  However, in the conventional technique as described in (Patent Document 1), in any of the plurality of cooling elements 54 that are in close contact with each other corresponding to each of the plurality of integrated circuit elements 51, the place where the leakage drops is liquid. Although it is possible to detect relatively quickly if it is directly above the sensor 56, it is assumed that the dripping place is not directly above the liquid sensor 56, but is slightly removed, or from the integrated circuit element 51 toward the module substrate 50. If it is transmitted, there is no liquid receiving container for transferring the liquid refrigerant leaking in the direction of the liquid sensor 56, so that there is a possibility that the operation of the electronic circuit may be disturbed before being detected by the liquid sensor 56.

  That is, there is a problem that the time until the liquid refrigerant that has leaked in the housing 55 accumulates and the leak is detected is relatively long, and the detection power of the leak is not sufficient.

  Further, in order to reliably receive and accumulate the leaked liquid refrigerant, a housing 55 that accommodates the cooling element 54 and the liquid sensor 56 is absolutely necessary, and if this is applied to the module substrate 50 that is mounted with high density, the housing 55 needs to be brought into contact with the entire outer periphery of the module substrate 50. Therefore, if the contact portion is to be secured, the pattern design of the module substrate 50 is restricted and the structure becomes complicated. There was a problem that it would be difficult.

  In addition, in the conventional techniques described in (Patent Document 2) and (Patent Document 3), it is possible to detect a leak when there is a large amount of leakage such as a floor surface or a saucer. Is suitable, but since the detection surface 115 of the liquid sensor body 110 is a very narrow area, if the leak itself is relatively small, the liquid leaks into the detection area and is detected. There was a problem that it took a long time.

  The present invention solves such a conventional problem, and has a liquid receiving portion for receiving the dropped liquid, and even if the amount of dropped liquid is relatively small, the liquid can be efficiently removed. An object of the present invention is to provide a liquid receiving container for a liquid sensor which is transferred to a detection region of a sensor and can be detected in a short time, and a cooling device including the same.

  In order to achieve the above object, the present invention provides a liquid receiving surface having a flat liquid receiving surface on one side, and an outer peripheral wall erected along an outer peripheral side edge of the liquid receiving surface, and a liquid receiving surface It is characterized by comprising one or a plurality of groove portions arranged above and a sensor fixing portion for fixing a liquid sensor to one end of the groove portion.

  The liquid sensor receiving container of the present invention has a liquid receiving part that receives the dropped liquid, and efficiently transfers the liquid to the detection region of the liquid sensor to facilitate detection.

  According to the first aspect of the present invention, there is provided a liquid receiving portion having a flat liquid receiving surface on one side and an outer peripheral wall erected along an outer peripheral side edge of the liquid receiving surface; A liquid sensor receiving container comprising one or a plurality of groove portions arranged on a surface and a sensor fixing portion for fixing a liquid sensor to one end of the groove portion. The liquid dripped onto the liquid receiving portion is once flat. The liquid received by the liquid receiving surface and then the received liquid flows into the groove portion arranged at a predetermined position on the liquid receiving surface, and the capillary phenomenon due to the groove portion also acts on the liquid flowing into the groove portion. However, since it is guided to the sensor fixing portion that fixes the liquid sensor to one end of the groove portion, the transfer to the detection region of the liquid sensor inside the sensor fixing portion is further promoted.

  Therefore, even if the amount of liquid dropped on the liquid receiving portion is relatively small, the liquid can be efficiently transferred to the detection area of the liquid sensor, and detection in a short time is possible.

  In addition, the outer peripheral wall erected along the outer peripheral side edge of the liquid receiving surface has an action of preventing the liquid once received by the liquid receiving surface from overflowing to the outside of the liquid receiving container for the liquid sensor. The liquid can surely flow to the detection area of the liquid sensor inside the sensor fixing portion.

  According to the invention described in claim 2 of the present invention, a liquid receiving portion having a flat liquid receiving surface on one side, and an outer peripheral wall erected along the outer peripheral side edge of the liquid receiving surface, and the liquid receiving surface A liquid receiving container for a liquid sensor, including one or a plurality of groove portions disposed on a surface opposite to the liquid surface, and a sensor fixing portion for fixing the liquid sensor to one end of the groove portion. The received liquid is once received by the flat liquid receiving surface, and then the received liquid turns to the opposite side from one end of the liquid receiving surface, and the predetermined surface on the opposite side to the liquid receiving surface Since the liquid flowing into the groove portion arranged at the position of the groove and further flowing into the groove portion is also guided by a capillary phenomenon due to the groove portion, it is guided to a sensor fixing portion that fixes the liquid sensor to one end of the groove portion. The transfer to the detection area of the liquid sensor inside the sensor fixing part is further promoted

  Therefore, even if the amount of liquid dropped on the liquid receiving portion is relatively small, the liquid can be efficiently transferred to the detection area of the liquid sensor, and detection in a short time is possible.

  Further, the liquid is turned so as to return to the sensor fixing portion through a groove portion arranged at a predetermined position on the surface opposite to the liquid receiving surface by turning to the opposite side at one end of the liquid receiving surface. Since the liquid can be transferred and the groove does not have to be disposed on the liquid receiving surface side, the liquid receiving surface can be secured even in a limited space.

  Furthermore, the outer peripheral wall standing along the outer peripheral side edge of the liquid receiving surface has an action of preventing the liquid once received by the liquid receiving surface from overflowing to the outside of the liquid receiving container for the liquid sensor. The liquid can surely flow to the detection area of the liquid sensor inside the sensor fixing portion.

  According to the third aspect of the present invention, in a use state where the liquid is dripped onto the liquid receiving surface and the liquid sensor can detect, the liquid receiving surface of the liquid receiving unit moves in the direction of gravity as it approaches the sensor fixing unit. Since the liquid is inclined so as to descend, the liquid dripped onto the liquid receiving part smoothly flows along the inclination direction of the liquid receiving surface by the action of gravity, and more efficiently into the detection area of the liquid sensor inside the sensor fixing part. Can be transported.

According to the invention described in claim 4 of the present invention, in the use state where the liquid is dripped onto the liquid receiving surface and the liquid sensor can detect, the groove portion is linear along the inclination direction of the liquid receiving surface of the liquid receiving portion. Therefore, the liquid flowing into the groove portion is guided to the detection area of the liquid sensor inside the sensor fixing portion at the shortest distance, and detection in a short time becomes possible.

  According to the invention described in claim 5 of the present invention, the liquid is dropped on the liquid receiving surface, and in a use state where the liquid sensor can detect, the bottom surface of the groove portion is lowered in the direction of gravity as it approaches the sensor fixing portion. Since it is inclined, the liquid that has flowed into the groove flows smoothly along the inclination direction of the groove due to the action of gravity, and the liquid sensor is fixed to one end of the groove. It can be transferred efficiently.

  According to the sixth aspect of the present invention, in a use state where the liquid is dripped onto the liquid receiving surface and the liquid sensor can detect, the liquid receiving surface of the liquid receiving unit moves in the direction of gravity as the distance from the sensor fixing unit increases. Since the liquid is inclined so as to descend, the liquid dripped onto the liquid receiving part flows smoothly along the inclined direction of the liquid receiving surface by the action of gravity, and turns to the surface opposite to the one end of the liquid receiving surface. The liquid sensor passes through a groove portion disposed at a predetermined position on the surface opposite to the liquid receiving surface, and is transferred to the detection region of the liquid sensor inside the sensor fixing portion that fixes the liquid sensor to one end of the groove portion. Is more promoted.

  According to the seventh aspect of the present invention, in a use state where the liquid is dropped on the liquid receiving surface and the liquid sensor can detect, the groove portion extends along the inclined direction of the surface opposite to the liquid receiving surface. Since the liquid flowed into the groove is also affected by the capillary action of the groove, the shortest distance to the detection area of the liquid sensor inside the sensor fixing part that fixes the liquid sensor to one end of the groove There is an effect of guiding by distance, and detection in a short time becomes possible.

  According to the eighth aspect of the present invention, the covering portion having a flat surface on at least one of the covering portions is combined so as to cover the groove portion, and a gap is formed between the groove portion and the flat surface of the covering portion. Therefore, the suction force by capillary action acts on the liquid flowing into the gap between the groove and the flat surface of the covering portion, and the liquid transfer force in the gap can be easily increased. It is possible to further promote the transfer of the liquid sensor inside the sensor fixing portion to the detection region.

  According to the ninth aspect of the present invention, since the opening is provided in the liquid receiving portion and the protruding wall is formed so as to surround the opening, for example, a fixing member is inserted into the opening to cool the cooling device. It is considered that liquid such as a cooling device, peripheral device, or other related member inside the casing of the electronic device is dropped on the liquid sensor receiving container. Can be easily fixed by placing it in place.

  In addition, on the protruding wall formed so as to surround the opening, the liquid received by the liquid receiving surface of the liquid receiving part travels through the interface with the fixing member inserted into the opening and receives the liquid sensor. This has the effect of preventing the liquid container from overflowing, and the liquid can be reliably transferred to the detection area of the liquid sensor inside the sensor fixing portion.

  According to the invention of claim 10 of the present invention, the top surface of the protruding wall formed so as to surround the opening in the use state where the liquid is dropped on the liquid receiving surface and the liquid sensor can detect the liquid receiving surface. Since it is positioned above the top surface of the outer peripheral wall erected along the outer peripheral edge of the portion in the direction of gravity, once the liquid reaches the interface with the fixing member inserted into the opening, the capillary tube Although it may be sucked in due to a phenomenon and easily overflow to the outside of the liquid sensor container, if it is positioned above the top surface of the outer peripheral wall in the direction of gravity, it prevents liquid from being sucked into the interface. The liquid can be reliably transferred to the detection area of the liquid sensor inside the sensor fixing portion.

According to the eleventh aspect of the present invention, since the convex portion is formed between the protruding wall formed so as to surround the opening and the sensor fixing portion, the fixing member inserted into the opening is temporarily Even if it is made of metal, the unevenness formed between the protruding wall and the sensor fixing part can set the creeping distance between the fixing member and the liquid sensor to be long, so the withstand voltage characteristics can be increased accordingly. There is an action to improve.

  In other words, when the liquid sensor receiving container is fixed to the cooling device or when the cooling device is mounted in an electronic device, the liquid sensor is electrically charged by static electricity from the human body via the metal fixing member. Can be prevented beforehand.

  According to the twelfth aspect of the present invention, the inner surface shape of the corner portion of the outer peripheral wall erected on the outer peripheral side edge of the liquid receiving surface is an arc shape in a cross section perpendicular to the erection direction. The liquid at the corner of the outer peripheral wall is prevented from creeping up in the antigravity direction due to capillary action, and the liquid received on the liquid receiving surface is prevented from overflowing outside the liquid receiving container for the liquid sensor. The liquid can be transferred to the detection area of the liquid sensor inside the sensor fixing portion more reliably.

  According to the thirteenth aspect of the present invention, the first liquid receiving surface that is flat on one side and the outer peripheral wall is erected along the outer peripheral side edge of the first liquid receiving surface. Liquid receiving portion, one or more first groove portions disposed on the first liquid receiving surface, and a flat second liquid receiving surface on one side, the outer periphery of the second liquid receiving surface A second liquid receiving portion having an outer peripheral wall standing along the side edge, one or more second groove portions disposed on the second liquid receiving surface, the first groove portion and the second groove portion A sensor fixing portion for fixing the liquid sensor to one end of the first liquid receiving surface, and the first liquid receiving surface and the second liquid receiving surface are positioned substantially perpendicular to each other. Regardless of whether the electronic device is fixed in a cooling device mounted in the device and the electronic device is installed in any of two directions that are substantially perpendicular to each other, the dropped liquid can be reliably transferred in each direction. There is an effect that can be detected only stop by.

  According to the fourteenth aspect of the present invention, the first liquid receiving surface that is flat on one side and the outer peripheral wall is erected along the outer peripheral side edge of the first liquid receiving surface. Liquid receiving portion, one or more first groove portions disposed on the first liquid receiving surface, and a flat second liquid receiving surface on one side, the outer periphery of the second liquid receiving surface A second liquid receiving portion having an outer peripheral wall erected along the side edge, one or more second groove portions disposed on a surface opposite to the second liquid receiving surface, and the first And a sensor fixing portion for fixing the liquid sensor to one end of the second groove portion, and the first liquid receiving surface and the second liquid receiving surface are positioned substantially perpendicular to each other. Even if the liquid container for sensor is fixed to the cooling device mounted in the electronic device, and the electronic device is installed in any of the two directions that are substantially perpendicular to each other, the dropped liquid can An effect that can be detected reliably received in countercurrent.

  Moreover, it turns at one end of the second liquid receiving surface and returns to the sensor fixing portion through a groove portion arranged at a predetermined position on the surface opposite to the second liquid receiving surface. In addition, since the liquid can be transferred and the groove portion does not have to be disposed on the second liquid receiving surface side, the second liquid receiving surface can be sufficiently secured even in a limited space.

According to the fifteenth aspect of the present invention, the first liquid receiving surface that is flat on one side and the outer peripheral wall is erected along the outer peripheral side edge of the first liquid receiving surface. Liquid receiving portion, one or more first groove portions disposed on the first liquid receiving surface, and a flat second liquid receiving surface on one side, the outer periphery of the second liquid receiving surface A second liquid receiving portion having an outer peripheral wall standing along the side edge, one or more second groove portions disposed on the second liquid receiving surface, and a third liquid receiving portion flat on one side A third liquid receiving portion having a surface and an outer peripheral wall standing along the outer peripheral side edge of the third liquid receiving surface; and one or a plurality of first liquid disposed on the third liquid receiving surface 3 and a sensor fixing part for fixing the liquid sensor to one end of the first to third groove parts, and the first to third heat receiving surfaces are positioned substantially perpendicular to each other. The liquid sensor container is inside the electronic device. Even if the electronic device is fixed to the mounted cooling device and the electronic device is installed in any one of the three directions that are substantially perpendicular to each other, there is an effect that the dropped liquid can be reliably received and detected in each direction. .

  According to the sixteenth aspect of the present invention, the first liquid receiving surface that is flat on one side and the outer peripheral wall is erected along the outer peripheral side edge of the first liquid receiving surface. Liquid receiving portion, one or more first groove portions disposed on the first liquid receiving surface, and a flat second liquid receiving surface on one side, the outer periphery of the second liquid receiving surface A second liquid receiving part having an outer peripheral wall erected along the side edge part, one or more second groove parts arranged on a surface opposite to the second liquid receiving surface, and one of them A third liquid receiving portion having a flat third liquid receiving surface and having an outer peripheral wall erected along an outer peripheral side edge of the third liquid receiving surface; and a third liquid receiving surface One to a plurality of third grooves arranged on the opposite surface, and a sensor fixing part for fixing the liquid sensor to one end of the first to third grooves, the first to third Since the heat receiving surfaces are positioned in a direction substantially perpendicular to each other, Even if the liquid sensor container is fixed to a cooling device mounted in an electronic device and the electronic device is installed in any of the three directions that are substantially perpendicular to each other, the dropped liquid can There is an effect that it can be received and detected reliably in the direction.

  Moreover, it turns at one end of the second and third liquid receiving surfaces, and passes through the respective groove portions arranged at predetermined positions on the surface opposite to the second and third liquid receiving surfaces. The liquid can be transferred so as to return to the sensor fixing portion, and it is not necessary to arrange a groove on the second and third liquid receiving surfaces, so the second and third liquid receiving surfaces can be used even in a limited space. Can be secured sufficiently.

  According to the seventeenth aspect of the present invention, since the hook portion is provided on the side surface of the outer peripheral wall of the liquid receiving portion, the liquid sensor is a sensor fixing portion of the liquid receiving container for the liquid sensor so that the liquid can be detected. By locking the lead wire of the liquid sensor to the hook portion in a state of being fixed to the hook, there is an effect of preventing the lead wire from extending unnecessarily to the outside.

  That is, it is possible to prevent the lead wire from extending unnecessarily and hanging down on the liquid receiving surface, and the liquid flowing through the liquid receiving surface from flowing along the lead wire to the electronic device side.

  In addition, when mounting the cooling device to which the liquid sensor receiving container is fixed in an electronic device, an operator hooks the lead wire on a hand or a tool and mechanically connects the lead wire lead-out portion of the liquid sensor. It is possible to prevent damage and disconnection from occurring.

  According to the eighteenth aspect of the present invention, since the cooling device is provided with the liquid sensor receiving container according to any one of the first to seventeenth aspects, leakage of the liquid refrigerant circulating inside is expected. The liquid sensor receiving container fixed at a predetermined position reliably receives the dripping of the liquid refrigerant, facilitates detection by the liquid sensor fixed to the liquid sensor receiving container, and the cooling device is mounted. In addition, since it is possible to take measures before the operation of the electronic circuit of the electronic device is hindered, higher reliability can be obtained.

  Embodiments of the present invention will be described below with reference to the drawings. In each drawing, the first liquid receiving part side of the liquid sensor receiving container will be described below, and the second liquid receiving part side will be described below.

(Embodiment 1)
1 to 8, FIG. 1 is a perspective view of a liquid sensor receiving container according to the first embodiment of the present invention, and FIG. 2 is an exploded view of the liquid sensor receiving container according to the first embodiment of the present invention. FIG. 3A is a perspective view, FIG. 3A is a plan view of a liquid receiving container for a liquid sensor according to Embodiment 1 of the present invention, and FIG. 3B is a cross-sectional view taken along the line AA in FIG. 3 (c) is a cross-sectional view taken along the line BB in FIG. 3 (a), and FIG. 4 (a) is a plan view of the liquid sensor receiving container according to Embodiment 1 of the present invention. 4B is a partial cross-sectional view taken along the line CC of FIG. 4A, and FIG. 4C is a partial cross-sectional view taken along the line D-D of FIG. ) Is a cross-sectional view taken along the line E-E in FIG. 4C, and FIG. 5B is a perspective view of the covering portion and the second liquid receiving portion formed on one side end portion thereof. FIG. 5 (c) is a rear perspective view of FIG. 6 (a), (b). FIG. 7 is a diagram for explaining the inner surface shape of the corner portion of the outer peripheral wall of the second liquid receiving unit, FIG. 7 is a state diagram in which the liquid sensor liquid receiving container is fixed to the cooling device, and FIG. It is the figure which showed the positional relationship of an integrated pump and the liquid receiving container for liquid sensors.

  First, as shown in FIG. 1, the liquid sensor receiving container 1 according to the present embodiment corresponds to the drop of liquid in the gravitational direction in two directions indicated by broken arrows F and S. The first liquid receiving unit 2 has a flat first liquid receiving surface 2a for receiving the liquid dropped in the direction of gravity indicated by the broken arrow F on the upper side, and the first liquid receiving surface 2a. An outer peripheral wall 2b having a height of at least 0.5 mm or more is erected along the outer peripheral side edge.

  The outer peripheral wall 2b erected along the outer peripheral side edge of the first liquid receiving part 2 has a liquid once received by the first liquid receiving surface 2a outside the liquid sensor receiving container 1. There is an action to prevent overflow, and when the liquid to be detected continuously drops on the first liquid receiving surface 2a, it does not overflow to the outside, but once on the first liquid receiving surface 2a. It is accepted.

  And the inside of the sensor fixing part 4 which fixes the liquid sensor 3 shown with the broken line becomes the detection area | region of the liquid sensor 3, The liquid which infiltrated the detection area adheres to the liquid sensor 3, and the sensor Since the resistance changes abruptly and becomes detectable, the liquid can be reliably transferred toward that direction.

  In particular, the sensor fixing portion 4 has a box shape, is fixed so as to receive the liquid sensor 3, and the gap between the inner wall of the sensor fixing portion 4 and the liquid sensor 3 is set at a predetermined interval. Therefore, once the transferred liquid reaches the gap between the liquid sensor 3 and the inner wall of the sensor fixing portion 4, the suction force due to the capillary phenomenon due to the gap also works and the liquid spreads in the detection region of the liquid sensor 3, so that the time is short. Detection is possible.

  In addition, when the liquid is dripped onto the first liquid receiving surface 2a and the liquid sensor 3 can detect the first liquid receiving surface 2a, the gravity indicated by the broken arrow F as it approaches the sensor fixing portion 4 Since the liquid drops to the first liquid receiving part 2, the liquid dripped onto the first liquid receiving part 2 flows smoothly along the inclination direction of the first liquid receiving surface 2 a by the action of the gravity, and the sensor fixing part 4 is more efficiently transferred to the detection area of the liquid sensor 3 inside.

  On the other hand, at a predetermined position of the first liquid receiving surface 2a, three flat convex portions 5 having a height of 0.5 to 5.0 mm are adjacent to each other at intervals of 0.5 to 2.0 mm. It is formed in a straight line toward the sensor fixing portion 4, and two first groove portions 5 a are disposed between the three flat plate-like convex portions 5.

  The liquid flowing into the two first groove portions 5a from the first liquid receiving surface 2a is communicated with the first groove portion 5a while the capillary action by the first groove portions 5a acts. Since it is guided to the sensor fixing part 4 that fixes the liquid sensor 3 at one end thereof, the transfer of the liquid sensor 3 inside the sensor fixing part 4 to the detection region is further promoted.

  Further, in the use state where the liquid is dropped on the first liquid receiving surface 2a and the liquid sensor 3 can detect, the bottom surfaces of the two first groove portions 5a are also the same as the flat first liquid receiving surface 2a. As the sensor fixing part 4 is approached, it is inclined so as to descend in the direction of gravity indicated by the broken arrow F, so that the liquid that has flowed into the first groove part 5a acts on the first groove part 5a by the action of gravity. The liquid flows smoothly along the inclination direction of the bottom surface, and is more efficiently transferred to the detection region of the liquid sensor 3 inside the box-shaped sensor fixing portion 4 communicating with the first groove 5a.

  In addition, when the liquid is dripped onto the first liquid receiving surface 2a and the liquid sensor 3 can detect it, the two first grooves 5a are the first liquid receiving parts of the first liquid receiving part 2. Since it is arranged linearly along the inclination direction of the surface 2a, the liquid flowing into the first groove 5a is guided to the detection region of the liquid sensor 3 inside the sensor fixing part 4 at the shortest distance. Detection in a short time is possible.

  Further, the covering portion 6 having a flat surface at least on the lower side thereof is combined so as to cover a part of the first groove portion 5a sandwiched between the three flat plate-like convex portions 5 described above. Two gaps 6 a are formed between the groove portion 5 a and the flat surface below the covering portion 6.

  And the attraction | suction force by a capillary action acts with respect to the liquid which flowed into the clearance gap 6a between the 1st groove part 5a and the lower flat surface of the covering part 6, and the transfer of the liquid in the clearance gap 6a Since the force is easily increased, the transfer of the liquid sensor 3 inside the sensor fixing unit 4 to the detection region is further promoted.

  As described above, the liquid received by the flat first liquid receiving surface 2a is transferred directly from the first liquid receiving surface 2a to the inside of the sensor fixing portion 4, or three flat plates. The sensor fixing portion 4 that flows into the first groove portion 5a sandwiched between the convex portions 5 and is transferred, communicates with the first groove portion 5a, and fixes the liquid sensor 3 to one end of the first groove portion 5a. However, since the inside of the sensor fixing portion 4 is a detection region of the liquid sensor 3, a relatively small amount of liquid is dropped on the first liquid receiving surface 2a of the first liquid receiving portion 2. Even so, the liquid can be efficiently transferred to the detection region of the liquid sensor 3, and detection in a short time becomes possible.

  That is, the first liquid receiving surface 2a receives the dropped liquid, and the two first grooves 5a can reliably transfer the liquid to the detection area of the liquid sensor 3, that is, the inside of the sensor fixing portion 4. ing.

  Here, two lead wires 3 a are connected to the liquid sensor 3, and the lead wires 3 a are bent in a right angle direction inside the sensor fixing portion 4 and drawn upward. Electrical connection with an external electronic device of the liquid receiving container 1 is possible.

  In addition, two openings into which a fixing member (not shown) for fixing the liquid sensor liquid receiving container 1 to a cooling device to be described later is inserted in the outer peripheral side edge of the first liquid receiving part 2. 2c is provided, and the projecting walls 2d are formed so as to surround the opening 2c. Therefore, a fixing member is inserted into the opening 2c, and another related member, for example, a heat receiving unit of a cooling device described later is integrated. There exists an effect | action that it can fix to the base member of a pump easily.

  That is, the liquid sensor receiving container 1 can be easily fixed by being disposed in a place where liquid such as a cooling device, a peripheral device, or other related members inside the casing of the electronic device is expected to drip.

  Further, on the protruding wall 2d formed so as to surround the opening 2c, the liquid received by the first liquid receiving surface 2a travels through the interface with the fixing member inserted into the opening 2c, and is used for the liquid sensor. This has the effect of preventing the liquid receiving container 1 from overflowing, and the liquid can be reliably transferred to the detection region of the liquid sensor 3 inside the sensor fixing portion 4.

In addition, once the liquid reaches the interface with the fixing member inserted into the opening 2c, the liquid is sucked by capillary action and may easily overflow to the outside of the liquid sensor receiving container 1. When the liquid is dripped onto the liquid receiving surface 2a and the liquid sensor 3 can detect it, the top surface of the protruding wall 2d formed so as to surround the opening 2c is the outer periphery of the first liquid receiving portion 2 Since it is positioned above the top surface of the outer peripheral wall 2b erected along the side edge in the direction of gravity and prevents the liquid from being sucked into the interface, the liquid is surely attached to the sensor fixing portion. 4 can be transferred to the detection region of the liquid sensor 3 inside.

  The first liquid receiving surface 2a located below the covering portion 6 is provided with a slightly larger opening 2e, and the protruding wall 2f formed so as to surround the opening 2e has a first The liquid received by the liquid receiving surface 2a is prevented from overflowing outside the liquid sensor liquid receiving container 1 through the interface with a fixing member (not shown) inserted into the opening 2e. The liquid can be reliably transferred to the detection region of the liquid sensor 3 inside the sensor fixing portion 4.

  Note that once the liquid reaches the interface with the fixing member inserted into the opening 2e, the liquid is sucked by capillary action and may easily overflow to the outside of the liquid sensor receiving container 1. The top surface of the projecting wall 2f formed so as to surround the opening 2e in a use state where the liquid is dropped on the first liquid receiving surface 2a and can be detected by the liquid sensor 3, is also the first liquid receiving portion 2. It was positioned above the top surface of the outer peripheral wall 2b erected along the outer peripheral edge in the direction of gravity to prevent liquid from being sucked into the interface.

  On the other hand, a second liquid receiving portion 7 having a flat second liquid receiving surface 7a is integrally formed at one side end of the covering portion 6, and the first liquid receiving surface 2a and the second liquid receiving surface 7a are secondly formed. Since the liquid receiving surfaces 7a are positioned substantially perpendicular to each other, even if the liquid receiving container 1 for the liquid sensor is installed so as to be downward in the direction of gravity indicated by the broken line arrow S, the liquid The second liquid receiving surface 7a can be reliably received.

  That is, when the second liquid receiving unit 7 is installed so as to be downward in the direction of gravity, the liquid drops in the direction of gravity indicated by the dashed arrow S, so that the outer peripheral side of the second liquid receiving unit 7 The outer peripheral wall 7b erected along the edge serves to prevent the liquid once received by the second liquid receiving surface 7a from overflowing outside the liquid receiving container 1 for the liquid sensor. When the liquid to be continuously dripped onto the second liquid receiving surface 7a, the liquid sensor 3 indicated by a broken line is once received by the second liquid receiving surface 7a without overflowing outside. Since the inside of the sensor fixing portion 4 to be fixed becomes a detection region of the liquid sensor 3, finally, the liquid can be reliably transferred toward that direction.

  Further, in a use state where the liquid is dripped onto the second liquid receiving surface 7a and the liquid sensor 3 can detect, the flat second liquid receiving surface 7a is indicated by a broken arrow S as the distance from the sensor fixing portion 4 increases. The liquid dropped onto the second liquid receiving portion 7 flows smoothly along the inclination direction of the second liquid receiving surface 7a by the action of the gravity, The second liquid receiving surface 7a is turned to the opposite surface from one end, and is sandwiched between four flat plate-shaped convex portions 8 formed on the surface opposite to the second liquid receiving surface 7a. The three second groove portions 8a (see FIG. 3A and FIG. 5C) arranged in this manner flow into the second groove portion 8a.

  The liquid that has flowed into the second groove 8a includes the outer peripheral wall 2b that is inclined so as to descend in the direction of gravity indicated by the capillary action by the groove 8a and the broken arrow S, and the second groove. Since the suction force due to the capillary action is also exerted by the gap formed with 8a, it communicates with the second groove 8a and is guided to the sensor fixing part 4 for fixing the liquid sensor 3 to one end thereof. The transfer to the detection area of the liquid sensor 3 inside the sensor fixing part 4 is further promoted.

In addition, when the liquid is dripped onto the second liquid receiving surface 7a and the liquid sensor 3 can detect the second groove portion 8a, the second groove 8a is inclined with respect to the surface opposite to the second liquid receiving surface 7a. Are arranged in a straight line along the second groove portion 8a, so that there is an action of guiding to the detection region of the liquid sensor 3 inside the sensor fixing portion 4 communicating with the second groove portion 8a in the shortest distance, and detection in a short time is possible. It becomes possible.

  Therefore, even if the amount of liquid dropped on the second liquid receiving unit 7 is relatively small, the liquid can be efficiently transferred to the detection region of the liquid sensor 3, and detection can be performed in a short time.

  That is, the second liquid receiving surface 7a receives the dropped liquid, and the three second groove portions 8a can reliably transfer the liquid to the detection region of the liquid sensor 3, that is, the inside of the sensor fixing portion 4. ing.

  Next, the fitting portion 9 will be described in detail later, but is fitted with a fitting convex portion 9a (see FIG. 2) formed on the flat first liquid receiving surface 2a of the first liquid receiving portion 2. Since the mutual positional relationship is regulated by lightly press-fitting and fitting the fitting hole 9b (see FIG. 2) formed in the portion 6, the first liquid receiving portion 2 is covered. It becomes easy to combine the part 6 in a predetermined position.

  In the case of the present embodiment, in a state where the liquid sensor receiving container 1 is finally fixed to the cooling device, the covering portion 6 and the base member on which the heat receiving integrated pump of the cooling device is placed Between the first liquid receiving part 2 and the covering part 6, since both are sandwiched between the first liquid receiving part 2 and fixed by a fixing member inserted into the two openings 2 c. Is not required to be fixed in advance, but there is no problem if it is fixed by an adhering method such as adhesion, heat welding, or ultrasonic welding as required.

  Further, two hook portions 10 (FIG. 3 (a) are formed on the side surface of the outer peripheral wall 2b that surrounds the outer periphery of the second liquid receiving portion 7 and is erected along the outer peripheral side edge of the first liquid receiving surface 2a. 5)), the lead wire in a state where the liquid sensor 3 is fixed to the sensor fixing portion 4 of the liquid sensor receiving container 1 so that the liquid can be detected. By locking 3a to the hook portion 10, it is possible to easily prevent the lead wire 3a from extending unnecessarily to the outside.

  That is, the lead wire 3a extends unnecessarily and hangs down on the first liquid receiving surface 2a or the second liquid receiving surface 7a, and the liquid flowing on those liquid receiving surfaces travels through the lead wire 3a. It can be prevented from flowing to the electronic device side.

  Further, when the cooling device to which the liquid sensor receiving container 1 is fixed is mounted in an electronic device, the lead wire 3a is pulled by a worker or a hand, and the lead wire of the liquid sensor 3 is pulled out. It is possible to prevent mechanical damage or disconnection from occurring in the part.

  In addition, as the material of the liquid sensor receiving container 1 of the present embodiment, if the liquid to be detected is water as the liquid refrigerant of the cooling device, dimensional stability, heat resistance, electrical insulation, In consideration of durability, molding processability, etc., a thermoplastic resin material is preferable. In particular, the liquid dropped on the surface of the first liquid receiving surface 2a or the second liquid receiving surface 7a flows smoothly on the surface. Thus, it is preferable to select a resin material suitable for smoothing the surface as much as possible.

  A thermosetting resin may be used as long as desired characteristics are obtained, or a metal material may be used as long as there is no problem due to the influence of the corrosiveness, withstand voltage, weight, etc. due to the liquid to be detected.

  Furthermore, if the liquid to be detected is a liquid such as a salt solution, alkali / acidic water, chlorine, or pickling solution, it is necessary to consider corrosion resistance.

On the other hand, as the liquid sensor 3 to be fixed to the sensor fixing portion 4, a pair of electrodes are baked on an alumina (Al ₂ O ₃ ) substrate using a carbon-based conductive paste, and then made of resin. A dew sensor that is an electric resistance type in which a moisture-sensitive film is applied and carbon particles are uniformly dispersed in the resin and has a detectable humidity range of 0 to 100% is preferable.

  When the condensation sensor is dry, the resin is contracted and the distance between the carbon particles is small, and the sensor resistance is several kΩ. And the sensor resistance becomes a high resistance of 100 kΩ or more.

  Therefore, if such an electric resistance type dew condensation sensor is used as the liquid sensor 3 fixed inside the sensor fixing part 4, the liquid that has entered the detection area inside the sensor fixing part 4 adheres, Since the sensor resistance changes abruptly, the resistance change can be easily detected by the detection circuit in the electronic device via the two lead wires 3a connected to the liquid sensor 3.

  In addition to the dew condensation sensor, a crystal resonator type dew condensation sensor, an optical dew condensation sensor, and the like can also be used. However, the positional relationship between the liquid that has entered the sensor fixing unit 4 and the liquid sensor 3 is the same. What is necessary is just to select suitably considering response speed, a size, a weight, an electrical property, etc.

  Next, using the exploded perspective view of the liquid sensor receiving container 1 according to the first embodiment of the present invention shown in FIG.

  Note that the liquid sensor 3 is originally assembled in a state of being fixed to the sensor fixing unit 4, but is shown in a position where it is finally placed in the first liquid receiving unit 2 for easy explanation.

  As is apparent from this figure, on the first liquid receiving surface 2 a, three flat convex portions 5 are formed linearly toward the direction of the liquid sensor 3 fixed inside the sensor fixing portion 4. The two first groove portions 5a are arranged so as to be sandwiched between the flat plate-like convex portions 5.

  The flat convex portion 5 is formed with a small step in the region closer to the liquid sensor 3 and is slightly lowered, but the covering portion 6 is combined so as to cover the first groove portion 5a in the region, A gap 6a (see FIGS. 3C and 4C) is formed between the first groove 5a and the lower flat surface of the covering portion 6.

  Then, as described above, a suction force due to capillary action acts on the liquid received by the first liquid receiving surface 2a and flowing into the gap 6a through the first groove 5a, and the gap 6a Since the liquid transfer force easily increases, the transfer to the detection area of the liquid sensor 3 inside the sensor fixing part 4 is further promoted.

  Further, a cylindrical fitting convex portion 9a is formed on the first liquid receiving surface 2a slightly closer to the liquid sensor 3, while a circular fitting hole portion 9b is formed on the covering portion 6. Therefore, since the mutual positional relationship is regulated by fitting them together at the time of combination, it is easy to combine the covering portion 6 at a predetermined position with respect to the first liquid receiving portion 2. It becomes.

  Further, since the arc-shaped convex portion 11 is formed between the protruding wall 2f formed so as to surround the opening 2e and the sensor fixing portion 4, the fixing member inserted into the opening 2e is made of metal. However, since the creeping distance between the liquid sensor 3 and the fixing member can be set longer by the arc-shaped convex portion 11 formed between the protruding wall 2f and the sensor fixing portion 4, the withstand voltage characteristics are accordingly increased. Can be improved.

  That is, when the liquid sensor receiving container 1 is fixed to the cooling device or the cooling device is mounted on an electronic device, the liquid sensor 3 is passed through the metal fixing member due to static electricity from the human body. Can be prevented from being electrically destroyed.

  Next, a part of the description will be supplemented by using FIGS. 3A to 3C.

  First, as shown in the plan view of the liquid sensor receiving container 1 according to Embodiment 1 of the present invention shown in FIG. 3A, the first liquid receiving part 2 has a liquid to be dropped on its upper side. It has a flat first liquid receiving surface 2a to be received, and an outer peripheral wall 2b is erected along the outer peripheral side edge of the first liquid receiving surface 2a.

  The outer peripheral wall 2b erected along the outer peripheral side edge of the first liquid receiving surface 2a is such that the liquid once received by the first liquid receiving surface 2a overflows outside the liquid sensor receiving container 1. The liquid sensor 3 (see FIG. 3C) is fixed inside the sensor fixing part 4 and serves as a detection area for the liquid sensor 3, so that in the final direction The liquid is surely flowing toward it.

  In addition, at a predetermined position on the flat first liquid receiving surface 2a, three flat convex portions 5 having a height of 0.5 to 5.0 mm are adjacent to each other at intervals of 0.5 to 2.0 mm. Then, it is formed in a straight line toward the sensor fixing portion 4, and two first groove portions 5 a are arranged between the three flat plate-like convex portions 5.

  On the other hand, two hook portions 10 (FIG. 5 (a) are formed on the side surface of the outer peripheral wall 2b that surrounds the outer periphery of the second liquid receiving portion 7 and is erected along the outer peripheral side edge of the first liquid receiving surface 2a. Since the liquid sensor 3 is fixed to the sensor fixing part 4 of the liquid sensor receiving container 1 so that the liquid can be detected, the lead wire 3a is connected to the hook part 10 so that the liquid can be detected. By being locked to the lead wire 3a, it is possible to easily prevent the lead wire 3a from being extended unnecessarily.

  That is, the lead wire 3a extends unnecessarily and hangs down on the first liquid receiving surface 2a or the second liquid receiving surface 7a, and the liquid flowing on those liquid receiving surfaces travels through the lead wire 3a. It can be prevented from flowing to the electronic device side.

  Then, as shown in the AA arrow sectional view of FIG. 3A in FIG. 3B, the liquid is dropped on the first liquid receiving surface 2 a, and the liquid sensor 3 can detect the use state. The flat first liquid receiving surface 2a is inclined so as to descend in the gravitational direction indicated by the broken-line arrow F as it approaches the sensor fixing portion 4, so that the liquid to be detected is continuously supplied to the first liquid receiving surface 2a. When the liquid drops on the first liquid receiving surface 2a, the liquid is once received by the first liquid receiving surface 2a, and does not overflow to the outside, but along the inclination direction of the first liquid receiving surface 2a by the action of gravity. Thus, the liquid smoothly flows in the direction indicated by the solid line arrow so that the liquid can be more efficiently transferred to the detection region of the liquid sensor 3 inside the sensor fixing portion 4.

  The liquid flowing along the inclination of the first liquid receiving surface 2a hits the protruding wall 2f formed so as to surround the opening 2e, but the sensor fixing portion is detoured along the protruding wall 2f. It flows directly to the inside of 4.

  In the present embodiment, the inclination angle θ1, which is the internal angle between the first liquid receiving surface 2a and a virtual straight line perpendicular to the gravitational direction indicated by the dashed arrow F, is set within a range of 5 to 10 °. However, this angle may be set as appropriate in consideration of the installation space of the liquid sensor receiving container 1 and the liquid detection speed.

On the other hand, when the second liquid receiving portion 7 is installed so as to be downward in the direction of gravity, the liquid drops in the direction of gravity indicated by the dashed arrow S, so that the liquid is supplied to the second liquid receiving surface 7a. Can be received.

  Here, when the liquid is dropped on the second liquid receiving surface 7a and the liquid sensor 3 can detect, the flat second liquid receiving surface 7a is indicated by a dashed arrow S as the distance from the sensor fixing portion 4 increases. Since it is inclined so as to descend in the direction of gravity shown, the liquid dripped onto the second liquid receiving part 7 flows smoothly along the inclination direction of the second liquid receiving surface 7a by the action of the gravity, Four lines formed on the surface opposite to the second liquid receiving surface 7a by turning to the surface on the opposite side from the one end of the second liquid receiving surface 7a as indicated by the solid line arrow. It flows into the three 2nd groove parts 8a (refer FIG. 3 (a) and FIG.5 (c)) pinched | interposed into the flat plate-shaped convex part 8 of this.

  The liquid flowing into the second groove 8a is connected to the second groove 8a and the liquid sensor 3 is fixed to one end of the liquid while the second capillary action is caused by the groove 8a. Therefore, the transfer to the detection region of the liquid sensor 3 inside the sensor fixing unit 4 is further promoted.

  In addition, when the liquid is dripped onto the second liquid receiving surface 7a and the liquid sensor 3 can detect the second groove portion 8a, the second groove 8a is inclined with respect to the surface opposite to the second liquid receiving surface 7a. Are arranged in a straight line along the second groove portion 8a, so that there is an action of guiding to the detection region of the liquid sensor 3 inside the sensor fixing portion 4 communicating with the second groove portion 8a in the shortest distance, and detection in a short time is possible. It becomes possible.

  Therefore, even if the amount of liquid dropped on the second liquid receiving unit 7 is relatively small, the liquid can be efficiently transferred to the detection region of the liquid sensor 3, and detection can be performed in a short time.

  Moreover, it turns at one end of the second liquid receiving surface 7a and is sandwiched between four flat projections 8 formed at predetermined positions on the surface opposite to the second liquid receiving surface 7a. The liquid can be transferred so as to return to the sensor fixing portion 4 through the three second groove portions 8a, and the second groove portion 8a need not be arranged on the second liquid receiving surface 7a side. Therefore, the second liquid receiving surface 7a can be sufficiently secured even in a limited space.

  In the present embodiment, the inclination angle θ2 that is an internal angle between the second liquid receiving surface 7a and a virtual straight line perpendicular to the gravitational direction indicated by the broken arrow S is set in a range of 5 to 10 °. However, this angle may be set as appropriate in consideration of the installation space of the liquid sensor receiving container 1 and the liquid detection speed.

  In addition, as described above, the arc-shaped convex portion 11 is formed between the protruding wall 2f formed so as to surround the opening 2e provided in the first liquid receiving portion 2 and the sensor fixing portion 4, They are combined so as to be fitted with an arcuate recess 12 formed on the lower surface of the covering portion 6.

  Accordingly, even if the fixing member inserted into the opening 2e is made of metal, the creeping distance between the liquid sensor 3 and the fixing member is increased by the arc-shaped convex portion 11 formed so as to surround the protruding wall 2f. Since it can be set longer, the withstand voltage characteristic can be improved accordingly.

  That is, when the liquid sensor receiving container 1 is fixed to the cooling device or the cooling device is mounted on an electronic device, the liquid sensor 3 is passed through the metal fixing member due to static electricity from the human body. Can be prevented from being electrically destroyed.

  Then, as shown in the sectional view taken along the line BB in FIG. 3A, a flat plate-like convex portion 5 is provided at a predetermined position on the first liquid receiving surface 2a. 1st groove part 5a is arrange | positioned between the flat convex parts 5.

  The liquid flowing into the first groove portion 5a from the first liquid receiving surface 2a communicates with the first groove portion 5a while acting also on the capillary phenomenon due to the first groove portion 5a, and one of them. Since it is guided to the sensor fixing portion 4 that fixes the liquid sensor 3 to the end portion, the transfer of the liquid sensor 3 inside the sensor fixing portion 4 to the detection region is further promoted.

  Further, in the use state where the liquid is dropped on the first liquid receiving surface 2a and the liquid sensor 3 can detect, the bottom surfaces of the two first groove portions 5a are also the same as the flat first liquid receiving surface 2a. As the sensor fixing part 4 is approached, it is inclined so as to descend in the direction of gravity indicated by the broken arrow F, so that the liquid that has flowed into the first groove part 5a acts on the first groove part 5a by the action of gravity. It flows smoothly along the inclination direction, and is more efficiently transferred to the detection region of the liquid sensor 3 inside the box-shaped sensor fixing part 4 communicating with the first groove 5a.

  In addition, when the liquid is dripped onto the first liquid receiving surface 2a and the liquid sensor 3 can detect it, the two first grooves 5a are the first liquid receiving parts of the first liquid receiving part 2. Since it is arranged linearly along the inclination direction of the surface 2a, the liquid flowing into the first groove 5a is guided to the detection region of the liquid sensor 3 inside the sensor fixing part 4 at the shortest distance. Detection in a short time is possible.

  Further, the covering portion 6 having a flat surface at least on the lower side thereof is combined so as to cover a part of the first groove portion 5a sandwiched between the three flat plate-like convex portions 5 described above. A gap 6 a is formed between the groove portion 5 a and the flat surface below the covering portion 6.

  And the attraction | suction force by a capillary action acts with respect to the liquid which flowed into the clearance gap 6a between the 1st groove part 5a and the lower flat surface of the covering part 6, and the transfer of the liquid in the clearance gap 6a Since the force is easily increased, the transfer of the liquid sensor 3 inside the sensor fixing unit 4 to the detection region is further promoted.

  Then, once the liquid reaches the gap between the liquid sensor 3 and the inner wall of the sensor fixing portion 4, the gap is set to be a predetermined interval, for example, 0.1 to 1.0 mm. Since the liquid is spread in the detection region of the liquid sensor 3 due to the suction force due to the capillary phenomenon caused by the above, detection in a short time is possible.

  On the other hand, when the second liquid receiving portion 7 is installed so as to be downward in the direction of gravity, the liquid drops in the direction of gravity indicated by the dashed arrow S, so that the liquid is supplied to the second liquid receiving surface 7a. Can be received.

  Here, when the liquid is dropped on the second liquid receiving surface 7a and the liquid sensor 3 can detect, the flat second liquid receiving surface 7a is indicated by a dashed arrow S as the distance from the sensor fixing portion 4 increases. Since it is inclined so as to descend in the direction of gravity shown, the liquid dripped onto the second liquid receiving part 7 flows smoothly along the inclination direction of the second liquid receiving surface 7a by the action of the gravity, Four lines formed on the surface opposite to the second liquid receiving surface 7a by turning to the surface on the opposite side from the one end of the second liquid receiving surface 7a as indicated by the solid line arrow. It flows into the three 2nd groove parts 8a (refer FIG. 3 (a) and FIG.5 (c)) pinched | interposed into the flat plate-shaped convex part 8 of this.

  In addition, the liquid flowing into the second groove 8a includes the outer peripheral wall 2b and the second groove that are inclined so as to descend in the gravitational direction indicated by the capillary action or the broken arrow S by the second groove 8a. While being attracted by capillarity due to the gap formed between the first and second grooves 8a, the second groove 8a communicates with the second groove 8a and is guided to the inside of the sensor fixing portion 4 for fixing the liquid sensor 3 to one end thereof. Therefore, the transfer of the liquid sensor 3 inside the sensor fixing portion 4 to the detection region is further promoted.

  Then, once the liquid reaches the gap between the liquid sensor 3 and the inner wall of the sensor fixing portion 4, the gap is set to be a predetermined interval, for example, 0.1 to 1.0 mm. Since the liquid is spread in the detection region of the liquid sensor 3 due to the suction force due to the capillary phenomenon caused by the above, detection in a short time is possible.

  In addition, when the liquid is dripped onto the second liquid receiving surface 7a and the liquid sensor 3 can detect the second groove portion 8a, the second groove 8a is inclined with respect to the surface opposite to the second liquid receiving surface 7a. Are arranged in a straight line along the second groove portion 8a, so that there is an action of guiding to the detection region of the liquid sensor 3 inside the sensor fixing portion 4 communicating with the second groove portion 8a in the shortest distance, and detection in a short time is possible. It becomes possible.

  Therefore, even if the amount of liquid dropped on the second liquid receiving unit 7 is relatively small, the liquid can be efficiently transferred to the detection region of the liquid sensor 3, and detection can be performed in a short time.

  Moreover, it turns at one end of the second liquid receiving surface 7a and is sandwiched between four flat projections 8 formed at predetermined positions on the surface opposite to the second liquid receiving surface 7a. The liquid can be transferred so as to return to the sensor fixing portion 4 through the three second groove portions 8a, and the second groove portion 8a need not be arranged on the second liquid receiving surface 7a side. Therefore, the second liquid receiving surface 7a can be sufficiently secured even in a limited space.

  In the present embodiment, in consideration of the insulation distance when the fixing member inserted into the opening 2e is made of metal, the second member 7a is turned at one end of the second liquid receiving surface 7a, and the second Returning to the sensor fixing portion 4 through the three second groove portions 8a sandwiched between the four flat projections 8 formed at predetermined positions on the surface opposite to the liquid receiving surface 7a. In the case where it is not necessary to consider such an insulation distance, instead of the second liquid receiving surface 7a, the inside of the outer peripheral wall 2b facing the second groove 8a is transferred. If the second groove portion is disposed therewith the side surface as the second liquid receiving surface, detection in a shorter time becomes possible.

  Next, a part of the description will be supplemented by using FIGS. 4 (a) to 4 (c).

  First, FIG. 4A is a plan view of the liquid sensor receiving container 1 according to Embodiment 1 of the present invention, which is the same as FIG.

  Next, as shown in the CC cross-sectional partial cross-sectional view of FIG. 4B, the height of the predetermined first position of the flat first liquid receiving surface 2a is 0.5. Three flat convex portions 5 of ˜5.0 mm are formed adjacent to each other at intervals of 0.5 to 2.0 mm and linearly toward the sensor fixing portion 4, and the three flat plate shapes are formed. Two first groove portions 5 a are arranged between the convex portions 5.

  In addition, when the liquid is dripped onto the first liquid receiving surface 2a and the liquid sensor 3 can detect it, both the first liquid receiving surface 2a and the bottom surfaces of the two first groove portions 5a are illustrated in FIG. 3 (b) and 3 (c), since it is inclined to descend in the direction of gravity indicated by the broken arrow F as it approaches the sensor fixing portion 4, it flows into the first groove portion 5a. The liquid flows smoothly along the inclination direction of the bottom surface of the first groove portion 5a by the action of gravity, and is efficiently transferred to the detection region of the liquid sensor 3 inside the sensor fixing portion 4.

In addition, when the liquid is dripped onto the first liquid receiving surface 2a and the liquid sensor 3 can detect it, the two first grooves 5a are the first liquid receiving parts of the first liquid receiving part 2. Since it is arranged linearly along the inclination direction of the surface 2a, the liquid flowing into the first groove 5a is guided to the detection region of the liquid sensor 3 inside the sensor fixing part 4 at the shortest distance. Detection in a short time is possible.

  Further, as shown in the partial cross-sectional view taken along the line DD in FIG. 4C, the covering portion 6 having a flat surface at least on the lower side thereof is the above-described three flat plates. Two gaps 6a are combined between the first groove 5a and the flat surface below the covering portion 6 so as to cover a part of the first groove 5a sandwiched between the convex portions 5. Is formed.

  And the attraction | suction force by a capillary action acts with respect to the liquid which flowed into the clearance gap 6a between the 1st groove part 5a and the lower flat surface of the covering part 6, and the transfer of the liquid in the clearance gap 6a Since the force is easily increased, the transfer of the liquid sensor 3 inside the sensor fixing unit 4 to the detection region is further promoted.

  In addition, as described above, the arc-shaped convex portion 11 is formed between the projecting wall 2 f formed so as to surround the opening 2 e and the sensor fixing portion 4, and the circle formed on the lower surface of the covering portion 6. Since it is combined so as to be fitted to the arc-shaped recess 12, it is formed between the protruding wall 2 f and the sensor fixing portion 4 even if the fixing member inserted into the opening 2 e is made of metal. Since the creeping distance between the liquid sensor 3 and its fixing member can be set longer by the arc-shaped convex portion 11 thus formed, the withstand voltage characteristic can be improved accordingly.

  That is, when the liquid sensor receiving container 1 is fixed to the cooling device or the cooling device is mounted on an electronic device, the liquid sensor 3 is passed through the metal fixing member due to static electricity from the human body. Can be prevented from being electrically destroyed.

  Next, a part of the description will be supplemented by using FIGS. 5A to 5C.

  FIG. 5A is a cross-sectional view taken along the line E-E in FIG. 4C, and the second liquid receiving unit 7 is indicated by a broken-line arrow S when installed so as to be downward in the direction of gravity. 5b is a perspective view of the covering portion 6 having a flat surface below the second liquid receiving portion 7 formed on one side end portion thereof, because the liquid drops in the direction of gravity. As described above, the second liquid receiving surface 7a positioned above the sensor fixing portion 4 can receive the liquid.

  Here, in a use state where the liquid is dropped onto the second liquid receiving surface 7a and the liquid sensor 3 can detect, the flat second liquid receiving surface 7a is shown in FIGS. 3B and 3C. As described above, since it is inclined to descend in the direction of gravity indicated by the dashed arrow S as it is away from the sensor fixing portion 4, the liquid dropped on the second liquid receiving portion 7 is affected by the action of gravity. It smoothly flows along the inclination direction of the second liquid receiving surface 7a, turns to the surface opposite to the one end of the second liquid receiving surface 7a, and is opposite to the second liquid receiving surface 7a. It flows into three second groove portions 8a sandwiched between four flat plate-like convex portions 8 formed on the side surface.

  Further, the liquid that has flowed into the second groove portion 8a further includes the outer peripheral wall 2b that is inclined to descend in the direction of gravity indicated by the broken arrow S as described above, and the capillary phenomenon caused by the groove portion 8a. A sensor fixing portion 4 that communicates with the second groove portion 8a and fixes the liquid sensor 3 at one end thereof while the suction force due to capillary action is also acting by the gap formed between the second groove portion 8a. Therefore, the transfer to the detection area of the liquid sensor 3 inside the sensor fixing part 4 is further promoted.

FIG. 5C is a rear perspective view of the covering portion 6 having a flat surface below and the second liquid receiving portion 7 formed at one side end thereof, and the second liquid receiving surface 7a. Four flat plate-like convex portions 8 having a height of 0.5 to 5.0 mm are adjacent to each other at a predetermined position on the surface opposite to each other at an interval of 0.5 to 2.0 mm. The three second grooves 8a sandwiched between the four flat projections 8 communicate with the sensor fixing portion 4 that fixes the liquid sensor 3 (not shown). The state where it is arranged is shown.

  The positioning convex portion 4a formed on the inner wall of the box-shaped sensor fixing portion 4 is fitted into a fitting hole (not shown) provided in the liquid sensor 3 in advance, so that the liquid sensor 3 is predetermined. It is for positioning to the position.

  Next, FIG. 6 is a diagram for explaining the inner surface shape of the corner portion of the outer peripheral wall of the second liquid receiving part. Using (a) and (b) of FIG. The inner surface shape of the corner portion of the outer peripheral wall 7b will be described.

  6A is a plan view of the covering portion 6 and the second liquid receiving portion 7 formed on one side end portion thereof, and the second liquid receiving surface 7a of the second liquid receiving portion 7. FIG. An outer peripheral wall 7b is erected along the outer peripheral side edge of the outer peripheral wall, and the outer peripheral wall 7b and the covering portion 6 are connected at the corner portion R, and the inner surface shape of the corner portion R is perpendicular to the erected direction. The cross section is arcuate.

  That is, in a use state where the liquid is dropped on the second liquid receiving surface 7a and can be detected by the liquid sensor 3, the liquid receiving container 1 for the liquid sensor is arranged so that the second liquid receiving unit 7 is downward in the direction of gravity. Since the liquid drops in the direction of gravity indicated by the broken-line arrow S, the covering portion 6 is also temporarily attached to the second liquid receiving surface 7a in the same manner as the outer peripheral wall 7b. Since the liquid received by the second liquid receiving surface 7a has an action of preventing the liquid sensor liquid receiving container 1 from overflowing outside, the covering portion 6 substantially has the second liquid receiving surface. It can be regarded as a part of the outer peripheral wall 7b erected along the outer peripheral side edge of the surface 7a.

  6B is a partial cross-sectional view taken along the line FF in FIG. 6A, and shows the inner surface shape of the corner portion R in a cross section perpendicular to the standing direction of the outer peripheral wall 7b. The inner surface shape is an arc shape.

  By adopting such a shape, when the second liquid receiving portion 7 is installed so as to be downward in the direction of gravity, the liquid at the corner portion R of the outer peripheral wall 7b is anti-gravity due to capillary action. Since the liquid is prevented from creeping up (in the direction opposite to the dashed arrow S in FIG. 6A), the liquid received by the second liquid receiving surface 7a is outside the liquid receiving container 1 for liquid sensor. It has an effect of preventing overflow and can be transferred to the detection area of the liquid sensor 3 inside the sensor fixing portion 4 more reliably.

  If the liquid is water, the inner radius of the corner portion R is preferably set to a radius of 1 to 5 mm in the cross section perpendicular to the standing direction.

  Further, FIG. 7 is a state diagram in which the liquid sensor receiving container 1 is fixed to the cooling device, and a heat receiving integrated pump that incorporates a liquid circulating pump and is thermally connected to a heating electronic component (not shown) such as an MPU. Two liquid transport paths 14 and 15 are connected to each of the 13 liquid discharge sides and the liquid suction side.

  The liquid transport path 14 is a flexible tube using a flexible and low gas permeability polymer material such as butyl rubber or fluoro rubber, and a metal tube such as copper, aluminum, stainless steel or the like at one bent portion thereof is a hose band. Similarly, the liquid transport path 15 is also configured by connecting a flexible tube and a metal pipe with a hose band, both of which constitute a part of the liquid circulation path.

The hermetic reserve tank 16 for gas-liquid separation is connected to the flexible tube of the liquid transport path 15 by a hose band, and the core tube (not shown) of the radiator 17 is connected to one end of the reserve tank 16. Since they are arranged adjacent to each other and connected to one side, the reserve tank 16 also constitutes a part of the liquid circulation path.

  A communication tank 18 is connected to the other end of the core tube of the radiator 17, and the communication tank 18 is connected to the reserve tank 16 by sandwiching the radiator 17 so as to have a U-shape when viewed from the side. Since it is connected by 17a and opposedly arranged, an air passage is formed between them, and the heat dissipation performance is further improved.

  Further, a flexible tube constituting the liquid transport path 14 is connected to the communication tank 18 by a hose band.

  That is, the heat receiving integrated pump 13 takes heat while exchanging heat with the liquid refrigerant flowing in contact with the heat-generating electronic component, while the liquid refrigerant heated to a high temperature by the heat exchange is discharged in the direction indicated by the arrow. Thereafter, the liquid passes through the liquid transport path 14 in the direction of the arrow and flows into the communication tank 18 to perform heat transport.

  Since the communication tank 18 is connected to and communicates with each of the plurality of core tubes constituting a part of the radiator 17, the liquid refrigerant exchanges heat and dissipates heat while flowing through the core tube of the radiator 17. After that, it flows through the reserve tank 16 constituting a part of the liquid circulation path, passes through the liquid transport path 15, and returns to the heat receiving integrated pump 13.

  By repeating such a liquid circulation operation, heat is removed from the heat generating electronic component, and an effective cooling effect is obtained.

  That is, in a state in which this cooling device is mounted on an electronic device, the base member 19 is fixed to the circuit board on which a heat generating electronic component such as an MPU that requires cooling is fixed by the fixing member 20a, and the heat receiving unit is integrated. Since the heat receiving surface of the pump 13 is in a state of being firmly thermally connected to the heat generating electronic component, a desired cooling effect is obtained.

  The four corners of the heat receiving integrated pump 13 are fixed by the fixing member 20b in a state of being mounted on the base member 19, and the liquid sensor liquid receiving liquid is disposed at a predetermined position of the corner on the lower surface of the base member 19. The two locations are fixed by the fixing member 20c in a state where the container 1 is arranged so that the liquid refrigerant leaks from the connection portions 21 of the heat receiving integrated pump 13 and the liquid transport paths 14 and 15 so as to be detected. ing.

  And even if the liquid refrigerant of the cooling device leaks from the connection part 21 during the operation of the electronic device, the liquid sensor receiving container 1 receives the leaked liquid refrigerant, and the liquid sensor 3 described above Since it is transferred to the detection region, the resistance change of the liquid sensor 3 to which the liquid refrigerant has adhered can be easily detected by the detection circuit on the electronic device side via the two lead wires 3a.

  That is, in the cooling device including the liquid sensor receiving container 1 as described above, the liquid sensor receiving container 1 disposed at a predetermined position where the leakage of the liquid refrigerant circulating inside is expected, Since the dripping is reliably received and can be detected in a short time by the liquid sensor 3 fixed to the liquid-receiving container 1 for the liquid sensor, a measure is taken before the operation of the electronic circuit of the electronic device on which the cooling device is mounted is disturbed. And higher reliability can be obtained.

  FIG. 8 is a view showing the positional relationship between the heat receiving integrated pump 13 of the cooling device and the liquid sensor receiving vessel 1 described above, and other main elements constituting the cooling device are omitted.

  Here, a discharge port 21 a for connecting to the liquid transport path 14 and a suction port 21 b for connecting to the liquid transport path 15 are provided on the side surface of the heat receiving integrated pump 13. It is composed.

  Then, at the corner of the lower surface of the base member 19, it is possible to detect the leakage of the liquid refrigerant from the connecting portion 21 corresponding to the liquid drop in the two gravitational directions indicated by the broken arrows F and S. In addition, a liquid sensor receiving container 1 is disposed.

  That is, when the electronic device is installed so that the direction of gravity is the arrow F, the first liquid receiving surface 2a is positioned below the discharge port 21a and the suction port 21b constituting the connection portion 21, and the gravity direction When the electronic device is arranged so that becomes the arrow S, the second liquid receiving surface 7a is positioned below the discharge port 21a and the suction port 21b constituting the connection portion 21, and the electronic device Even if the device is installed in any of two directions that are substantially perpendicular to each other, the dropped liquid can be reliably received and detected in each direction.

(Embodiment 2)
FIG. 9A is a perspective view of a liquid sensor receiving container according to the second embodiment of the present invention, and FIG. 9B is a perspective view of only the liquid receiving part, which is fixed to a cooling device or the like. For this reason, an opening portion and a hook portion for inserting a fixing member for the purpose are omitted, and only a main portion is shown in a simplified manner.

  The liquid sensor receiving container 30 according to the present embodiment corresponds only to the liquid drop in one gravity direction indicated by the dashed arrow F, and has a flat liquid receiving surface 31a on the upper side. The liquid receiving part 31 is provided with an outer peripheral wall 31b having a height of at least 0.5 mm along the outer peripheral side edge, and three flat convex parts 32 are provided at predetermined positions on the liquid receiving surface 31a. Is formed in a straight line toward the sensor fixing portion 33, and is provided with two groove portions 32a sandwiched between the three plate-like convex portions 32, and communicates with the groove portion 32a and one end thereof. A box-shaped sensor fixing portion 33 for fixing the liquid sensor 3 is provided.

  The outer peripheral wall 31b erected along the outer peripheral side edge of the liquid receiving surface 31a acts to prevent the liquid once received by the liquid receiving surface 31a from overflowing to the outside of the liquid sensor receiving container 30. The liquid can be reliably transferred to the detection region of the liquid sensor 3 inside the sensor fixing portion 33 for fixing the liquid sensor 3 indicated by the broken line.

  Further, in a use state where the liquid is dripped onto the liquid receiving surface 31 a and the liquid sensor 3 can detect, the liquid receiving surface 31 a descends in the direction of gravity indicated by the broken arrow F as it approaches the sensor fixing portion 33. Since the liquid to be detected continuously drops on the liquid receiving surface 31a because it is inclined, it is received by the liquid receiving surface 31a and does not overflow to the outside, but the liquid is received by the action of gravity. The liquid smoothly flows along the inclined direction of the surface 31a, and the liquid can be transferred more efficiently in the direction inside the sensor fixing portion 33.

  On the other hand, at a predetermined position of the liquid receiving surface 31a, three flat convex portions 32 having a height of 0.5 to 5.0 mm are adjacent to each other at intervals of 0.5 to 2.0 mm, so that the sensor fixing portion It is formed in a straight line toward 33, and two groove portions 32 a are arranged between the three flat plate-like convex portions 32.

  The liquid flowing into the two groove portions 32a from the liquid receiving surface 31a communicates with the groove portion 32a while the capillary phenomenon due to the groove portion 32a acts, and the liquid sensor 3 is fixed to one end portion thereof. Since it is guided to the sensor fixing part 33, the transfer to the detection area of the liquid sensor 3 inside the sensor fixing part 33 is further promoted.

  Further, in a use state where the liquid is dripped onto the liquid receiving surface 31a and the liquid sensor 3 can detect, the bottom surfaces of the two groove portions 32a are broken as they approach the sensor fixing portion 33, similarly to the flat liquid receiving surface 31a. The liquid flowing into the groove portion 32a smoothly flows along the inclination direction of the groove portion 32a by the action of the gravity and communicates with the groove portion 32a. Therefore, it can be more efficiently transferred to the detection area of the liquid sensor 3 inside the sensor fixing part 33.

  Moreover, since the two groove portions 32a are linearly arranged along the inclination direction of the liquid receiving surface 31a of the liquid receiving portion 31, the liquid that has flowed into the groove portion 32a is allowed to flow inside the sensor fixing 33 portion. There is an effect of guiding to the detection area of the sensor 3 at the shortest distance, and detection in a short time becomes possible.

  Further, a covering portion 34 having a flat surface on the lower side is combined from above so as to cover a part of the two groove portions 32a sandwiched between the three plate-like convex portions 32, and the groove portion 32a and Two gaps 34 a are formed between the flat surface below the covering portion 34.

  Further, the covering portion 34 is integrally formed with the sensor fixing portion 33 described above at one side end portion thereof.

  Then, a suction force due to capillary action acts on the liquid flowing into the gap 34a between the groove portion 32a and the covering portion 34, and the liquid transfer force in the gap 34a can be easily increased. Transfer of the liquid sensor 3 inside the sensor fixing portion 33 to the detection region can be further promoted.

  As described above, the liquid received by the flat liquid receiving surface 31a is directly transferred from the liquid receiving surface 31a to the inside of the sensor fixing portion 33, or is sandwiched between the three flat convex portions 32. However, since the inside of the sensor fixing portion 33 is a detection region of the liquid sensor 3, the liquid receiving portion receives the liquid. Even if the amount of liquid dropped on the liquid receiving surface 31a of the part 31 is relatively small, the liquid can be efficiently transferred to the detection region of the liquid sensor 3, and detection in a short time is possible.

  That is, the liquid receiving surface 31a receives the dropped liquid, and the two groove portions 32a can reliably transfer the liquid to the detection region of the liquid sensor 3, that is, the inside of the sensor fixing portion 33.

  Here, two lead wires 3 a are connected to the liquid sensor 3, and the lead wires 3 a are bent in a right angle direction inside the sensor fixing portion 33 and drawn upward, so that the liquid sensor Electrical connection with an external electronic device of the liquid receiving container 30 is possible.

(Embodiment 3)
FIG. 10A is a perspective view of a liquid sensor receiving container 40 according to Embodiment 3 of the present invention, and FIG. 10B is a perspective view of only the liquid receiving part, which is fixed to a cooling device or the like. The opening portion and the hook portion for inserting the fixing member for the purpose are omitted, and only the main portion is shown in a simplified manner.

The liquid sensor receiving container 40 according to the present embodiment corresponds to the drop of liquid in the gravitational direction in three directions indicated by broken arrows F, S, and T, and is flat on the upper surface. A first liquid receiving portion 41 having a liquid receiving surface 41a and having an outer peripheral wall 41b standing at a height of at least 0.5 mm along the outer peripheral side edge of the first liquid receiving surface 41a; Three plate-like convex portions 44 are formed at predetermined positions on one liquid receiving surface 41a, and two first groove portions 44a are arranged between the plate-like convex portions 44, and are formed on the side surfaces. A second liquid receiving surface having a flat second liquid receiving surface 42a, and an outer peripheral wall 42b having a height of at least 0.5 mm or more standing along the outer peripheral side edge of the second liquid receiving surface 42a. The plate-like convex portion 45 is formed at a predetermined position on the portion 42 and the second liquid receiving surface 42a, and the two second groove portions 4 are sandwiched between the plate-like convex portions 45. a, a flat third liquid receiving surface 43a on the side surface, and an outer peripheral wall having a height of at least 0.5 mm along the outer peripheral side edge of the third liquid receiving surface 43a The third liquid receiving portion 43 erected 43b and three flat convex portions 46 are formed at predetermined positions on the third liquid receiving surface 43a, and two are sandwiched between the flat convex portions 46. The third groove portion 46a is disposed, communicates with any of the first groove portion 44a, the second groove portion 45a, and the third groove portion 46a, and fixes the liquid sensor 3 to one end thereof. The first to third heat receiving surfaces 41a, 42a, 43a are positioned substantially perpendicular to each other.

  Here, the first liquid receiving part 41 corresponds to the dripping of the liquid in the gravitational direction indicated by the broken-line arrow F, and the outer peripheral wall 41b erected on the outer peripheral side edge thereof is once the first liquid receiving part 41. The liquid received on the liquid receiving surface 41a has an action of preventing the liquid sensor liquid receiving container 40 from overflowing, and the liquid sensor 3 inside the sensor fixing portion 47 for fixing the liquid sensor 3 indicated by a broken line is used. The liquid can be reliably transferred to the detection region.

  Further, in a use state where the liquid is dropped on the first liquid receiving surface 41 a and the liquid sensor 3 can detect, the first liquid receiving surface 41 a is indicated by a dashed arrow F as it approaches the sensor fixing portion 47. Since the liquid is inclined so as to descend in the direction of gravity, when the liquid to be detected continuously drops on the first liquid receiving surface 41a, the liquid is received by the first liquid receiving surface 41a and externally The liquid smoothly flows along the inclined direction of the first liquid receiving surface 41a by the action of gravity without overflowing, and can be transferred more efficiently in the direction of the inside of the sensor fixing portion 47. ing.

  On the other hand, at a predetermined position of the first liquid receiving surface 41a, three flat convex portions 44 having a height of 0.5 to 5.0 mm are adjacent to each other at intervals of 0.5 to 2.0 mm. It is formed in a straight line toward the sensor fixing portion 47, and two first groove portions 44a are arranged between the three flat plate-shaped convex portions 44.

  The liquid flowing into the two first groove portions 44a from the first liquid receiving surface 41a communicates with the first groove portion 44a while acting on the capillary action of the first groove portions 44a. Since it is guided to the sensor fixing part 47 that fixes the liquid sensor 3 at one end thereof, the transfer of the liquid sensor 3 inside the sensor fixing part 47 to the detection region is further promoted.

  Further, in a use state where the liquid is dropped on the first liquid receiving surface 41a and the liquid sensor 3 can detect, the bottom surfaces of the two first groove portions 44a are also the same as the flat first liquid receiving surface 41a. As the sensor fixing portion 47 is approached, it is inclined so as to descend in the direction of gravity indicated by the dashed arrow F, so that the liquid flowing into the first groove portion 44a is caused by the action of the gravity of the first groove portion 44a. The liquid flows smoothly along the inclination direction, and can be more efficiently transferred to the detection region of the liquid sensor 3 inside the sensor fixing portion 47 communicating with the first groove portion 44a.

  Moreover, since the two first groove portions 44a are linearly arranged along the inclination direction of the first liquid receiving surface 41a of the first liquid receiving portion 41, the first groove portion 44a flows into the first groove portion 44a. The liquid thus guided is guided to the detection area of the liquid sensor 3 of the sensor fixing portion 47 at the shortest distance, and detection in a short time becomes possible.

Next, the second liquid receiving portion 42 corresponds to the drop of the liquid in the gravity direction indicated by the broken arrow S, and the outer peripheral wall 42b erected on the outer peripheral side edge portion is temporarily attached to the second liquid receiving portion 42. The liquid received by the liquid receiving surface 42a has an effect of preventing the liquid sensor liquid receiving container 40 from overflowing, and the liquid sensor 3 inside the sensor fixing portion 47 for fixing the liquid sensor 3 indicated by the broken line is used. The liquid can be reliably transferred to the detection region.

  In addition, when the liquid is dropped onto the second liquid receiving surface 42a and the liquid sensor 3 can detect the second liquid receiving surface 42a, the second liquid receiving surface 42a is indicated by a dashed arrow S as it approaches the sensor fixing portion 47. Since the liquid is inclined so as to descend in the direction of gravity, when the liquid to be detected continuously drops on the second liquid receiving surface 42a, the liquid is received by the second liquid receiving surface 42a and externally The liquid smoothly flows along the inclination direction of the second liquid receiving surface 42a by the action of gravity without overflowing the liquid, and the liquid can be transferred more efficiently in the direction inside the sensor fixing portion 47. ing.

  On the other hand, at a predetermined position of the second liquid receiving surface 42a, three flat convex portions 45 having a height of 0.5 to 5.0 mm are adjacent to each other at an interval of 0.5 to 2.0 mm. It is formed in a straight line toward the sensor fixing portion 47, and two second groove portions 45a are disposed between the three flat convex portions 45.

  The liquid flowing into the two second groove portions 45a from the second liquid receiving surface 42a communicates with the second groove portion 45a while acting on the capillary phenomenon due to the second groove portion 45a and the liquid. Since it is guided to the sensor fixing part 47 that fixes the liquid sensor 3 at one end, the transfer of the liquid sensor 3 inside the sensor fixing part 47 to the detection region is further promoted.

  In addition, when the liquid is dropped on the second liquid receiving surface 42a and the liquid sensor 3 can detect, the bottom surfaces of the two second groove portions 45a are also the same as the flat second liquid receiving surface 42a. As the sensor fixing part 47 is approached, it is inclined so as to descend in the direction of gravity indicated by the broken arrow S, so that the liquid flowing into the second groove part 45a is caused by the action of the gravity of the second groove part 45a. The liquid flows smoothly along the inclination direction and can be more efficiently transferred to the detection region of the liquid sensor 3 inside the sensor fixing portion 47 communicating with the second groove 45a.

  Moreover, since the two second groove portions 45a are linearly arranged along the inclination direction of the second liquid receiving surface 42a, the liquid that has flowed into the second groove portion 45a is allowed to flow into the sensor fixing portion 47. The liquid sensor 3 is guided to the detection area of the liquid sensor 3 with the shortest distance, and detection in a short time becomes possible.

  Further, the third liquid receiving portion 43 corresponds to the drop of the liquid in the gravity direction indicated by the broken arrow T, and the outer peripheral wall 43b erected on the outer peripheral side edge portion is temporarily attached to the third liquid receiving portion 43. The liquid sensor 3 has a function of preventing the liquid received by the liquid surface 43a from overflowing outside the liquid sensor receiving container 40, and is detected by the liquid sensor 3 inside the sensor fixing portion 47 for fixing the liquid sensor 3 indicated by a broken line. This ensures that the liquid can be transferred to the area.

  Further, in a use state where the liquid is dropped on the third liquid receiving surface 43 a and the liquid sensor 3 can detect, the third liquid receiving surface 43 a is indicated by a broken arrow T as it approaches the sensor fixing portion 47. Since the liquid is inclined so as to descend in the direction of gravity, when the liquid to be detected continuously drops on the third liquid receiving surface 43a, the liquid is received by the third liquid receiving surface 43a and externally. The liquid smoothly flows along the inclined direction of the third liquid receiving surface 43a by the action of gravity without overflowing, and can be transferred more efficiently in the direction of the inside of the sensor fixing portion 47. ing.

  On the other hand, at a predetermined position of the third liquid receiving surface 43a, three flat convex portions 46 having a height of 0.5 to 5.0 mm are adjacent to each other at an interval of 0.5 to 2.0 mm. It is formed in a straight line toward the sensor fixing portion 47, and two third groove portions 46a are arranged between the three flat plate-like convex portions 46.

  The liquid flowing into the two third groove portions 46a from the third liquid receiving surface 43a communicates with the third groove portion 46a while acting on the capillary action of the third groove portions 46a. Since it is guided to the sensor fixing part 47 that fixes the liquid sensor 3 at one end thereof, the transfer of the liquid sensor 3 inside the sensor fixing part 47 to the detection region is further promoted.

  Further, in a use state where the liquid is dropped on the third liquid receiving surface 43a and the liquid sensor 3 can detect, the bottom surfaces of the two third groove portions 46a are also the same as the flat third liquid receiving surface 43a. As the sensor fixing portion 47 is approached, it is inclined so as to descend in the direction of gravity indicated by the broken arrow T, so that the liquid flowing into the third groove portion 46a is caused by the action of the gravity of the third groove portion 46a. The liquid flows smoothly along the inclination direction and can be more efficiently transferred to the detection region of the liquid sensor 3 inside the sensor fixing portion 47 communicating with the third groove portion 46a.

  Moreover, since the two third grooves 46a are partly arranged along the inclination direction of the third liquid receiving surface 43a, the liquid flowing into the third groove 46a is There is an effect of guiding the detection area of the liquid sensor 3 of the sensor fixing portion 47 at the shortest distance, and detection in a short time becomes possible.

  In addition, the covering portion 48 having a flat surface in three directions is integrally formed with the sensor fixing portion 47, but any of the first groove portion 44a, the second groove portion 45a, and the third groove portion 46a is formed. However, it has flat surfaces in three directions so that it can be covered from above, and the groove portions 44a, 45a, 46a and the covering portion 48 are combined to form the respective groove portions 44a, 45a, 46a, and A gap 48a (only a part is shown) is formed between the covering portion 48 and the flat surface in the three directions.

  Then, a suction force by capillary action acts on the liquid flowing into the gap 48a between the grooves 44a, 45a, 46a and the covering portion 48, and the liquid transfer force in the gap 48a is easily increased. Therefore, the transfer of the liquid sensor 3 inside the sensor fixing portion 47 to the detection region can be further promoted.

  As described above, the liquid received by any one of the flat first to third liquid receiving surfaces 41a, 42a, 43a is directly from the liquid receiving surfaces 41a, 42a, 43a of the sensor fixing portion 47. It is transferred to the inside, or flows into each of the grooves 44a, 45a, 46a sandwiched by the flat plate-shaped convex portions 44, 45, 46, and is transferred to the inside of the sensor fixing portion 47 that communicates with any of the grooves. However, since the inside of the sensor fixing portion 47 is a detection region of the liquid sensor 3, even if a relatively small amount of liquid is dropped on any liquid receiving surface, the liquid is efficiently removed from the liquid sensor. 3 can be transferred to the detection region 3 and can be detected in a short time.

  That is, in response to the direction in which the liquid sensor receiving container 40 is installed, any of the first to third liquid receiving surfaces 41a, 42a, 43a receives the dropped liquid, and each liquid receiving surface receives the liquid. Any of the disposed grooves 44 a, 45 a, 46 a can reliably transfer the liquid into the detection area of the liquid sensor 3, that is, inside the sensor fixing portion 47.

  Here, two lead wires 3 a are connected to the liquid sensor 3, and the lead wires 3 a are bent in a right angle direction inside the sensor fixing portion 47 and drawn upward, so that the liquid sensor Electrical connection with an external electronic device of the liquid receiving container 40 is possible.

In the above description of the first to third embodiments, the description has been given of the case where the flat plate-like convex portion is integrally formed on the liquid receiving surface and the groove is disposed on the liquid receiving surface. A cover member formed integrally with a plurality of flat plate-shaped convex portions or a separate member integrally formed with a plurality of flat plate-shaped convex portions on its lower surface is disposed on the liquid receiving surface. The groove portion sandwiched between the flat plate-like convex portions may be arranged on the liquid surface, or the groove portion is simply formed by forming one or a plurality of concave portions on the liquid receiving surface. It is good also as a form.

  In addition, the sensor fixing part is preferably a box shape that accommodates the liquid sensor so that the liquid can be sucked more easily, and the inside thereof communicates with the groove part that transfers the liquid. If sufficient detection is possible even if it is not necessary, for example, a configuration may be adopted in which a part or all of the liquid sensor is exposed and the liquid sensor is simply fixed to one end of the groove for transferring the liquid with a fixing member. Absent.

  In addition, it is preferable to arrange a plurality of grooves in a straight line on the liquid receiving surface, but the size, shape, and quantity are not limited to those described in the above embodiments, and the shape is curved, for example. In the case of a shape or a rectangle, or when the size is restricted, the number may be one instead of plural.

  Furthermore, in order to facilitate the manufacture, the covering portion and the sensor fixing portion are configured as an integrally molded product, but those components may be configured as separate members.

  The present invention can be applied not only to detect leakage of liquid refrigerant in a cooling device, but also to detect the presence or absence of liquid dripping in a short time in various other applications such as leakage of liquid from a semiconductor device or its piping, for example. Applicable to.

The perspective view of the liquid receiving container for liquid sensors concerning Embodiment 1 of this invention. The disassembled perspective view of the liquid receiving container for liquid sensors concerning Embodiment 1 of this invention. (A) Plan view of liquid receiving container for liquid sensor according to Embodiment 1 of the present invention, (b) AA cross-sectional view of FIG. (A), (c) B- of FIG. B arrow cross section (A) Plan view of liquid receiving container for liquid sensor according to Embodiment 1 of the present invention, (b) Partial sectional view taken along the line CC of FIG. 1 (a), (c) D of FIG. -D partial sectional view (A) EE arrow sectional view of FIG.4 (c), (b) The perspective view of the 2nd liquid receiving part formed in the covering part and its one side edge part, (c) Covering part And the back side perspective view of the 2nd liquid receiving part formed in the one side edge part The figure explaining the inner surface shape of the corner part of the outer peripheral wall of a 2nd liquid receiving part State diagram with liquid sensor receiving container fixed to cooling device The figure which showed the positional relationship of the heat receiving integrated pump of a cooling device, and the liquid receiving container for liquid sensors (A) Perspective view of liquid receiving container for liquid sensor according to Embodiment 2 of the present invention, (b) Perspective view of only the liquid receiving part (A) Perspective view of liquid receiver for liquid sensor according to Embodiment 3 of the present invention, (b) Perspective view of only the liquid receiver (A) Sectional drawing of the principal part of the cooling device as described in embodiment of (patent document 1), (b) Front view of the cooling device (A) Sectional drawing of the state in the middle of mounting | wearing a standby member with the liquid sensor main body as described in embodiment of (patent document 2), (b) The state after attaching the liquid sensor main body to a standby member Cross section

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Liquid receiving container for liquid sensors 2 1st liquid receiving part 2a 1st liquid receiving surface 2b Outer peripheral wall 2c Opening part 2d Projecting wall 2e Opening part 2f Projecting wall 3 Liquid sensor 3a Lead wire 4 Sensor fixing | fixed part 4a Positioning convex Part 5 Flat convex part 5a First groove part 6 Covering part 6a Clearance 7 Second liquid receiving part 7a Second liquid receiving surface 8 Flat convex part 8a Second groove part 9 Fitting part 9a Fitting convex part 9b Fitting hole 10 Hook 11 Projection 12 Concave 13 Heat receiving integrated pump 14 Liquid transport path 15 Liquid transport path 16 Reserve tank 17 Radiator 17a Tank connecting member 18 Communication tank 19 Base member 20a Fixing member 20b Fixing member 20c Fixing member 21 Connection part 21a Discharge port 21b Suction port 30 Liquid sensor receiving container 31 Liquid receiving part 31a Liquid receiving surface 31b Outer peripheral wall 32 Flat plate-like convex part 32a Groove part 33 Sensor fixing part 34 Covering part 34a Clearance 40 Liquid sensor receiving container 41 First liquid receiving part 41a First liquid receiving surface 41b Outer peripheral wall 42 Second liquid receiving part 42a Second liquid receiving surface 42b Outer peripheral wall 43 3rd liquid receiving part 43a 3rd liquid receiving surface 43b Peripheral wall 44 Flat plate-like convex part 44a 1st groove part 45 Flat plate-like convex part 45a 2nd groove part 46 Flat plate-like convex part 46a 3rd groove part 47 Sensor fixation Part 48 Covering part 48a Clearance F Gravity direction M Submerged surface R Corner part S Gravity direction T Gravity direction θ1 Inclination angle θ2 Inclination angle

Claims (18)

A liquid receiving portion having a side wall standing along an outer peripheral side edge of the liquid receiving surface; a groove formed on the liquid receiving surface; and a sensor fixing portion for fixing a liquid sensor to one end of the groove. A liquid receiving container for a liquid sensor, comprising: A liquid sensor having a side wall erected along the outer peripheral edge of the liquid receiving surface, a groove formed on the surface opposite to the liquid receiving surface, and a liquid sensor fixed to one end of the groove And a sensor fixing part for receiving the liquid sensor. The liquid receiving container for a liquid sensor according to claim 1, wherein the liquid receiving surface of the liquid receiving part is inclined so that the sensor fixing part is on the lower side in the gravity direction. 4. The liquid receiving container for a liquid sensor according to claim 3, wherein the groove is arranged along an inclination direction of a liquid receiving surface of the liquid receiving part in a usage state of the liquid receiving container for the liquid sensor. The liquid receiving container for a liquid sensor according to claim 1, wherein the bottom surface of the groove portion is inclined in the direction of gravity as the liquid receiving container for the liquid sensor is used, as it approaches the sensor fixing portion. The liquid receiving surface of the liquid receiving unit is inclined so that the liquid receiving surface of the liquid receiving unit is lowered in the gravitational direction as it is separated from the sensor fixing unit in a use state where the liquid is dropped on the liquid receiving surface and the liquid sensor can detect. The liquid receiving container for a liquid sensor according to claim 2. In the use state where the liquid is dripped onto the liquid receiving surface and the liquid sensor can detect, the groove portion is arranged linearly along the inclination direction of the surface opposite to the liquid receiving surface. The liquid receiving container for a liquid sensor according to claim 6.
The liquid receiving container for a liquid sensor according to claim 1 or 2, wherein a covering portion is combined so as to cover the groove portion, and a gap is formed between the groove portion and a flat surface of the covering portion. The liquid receiving container for a liquid sensor according to claim 1, wherein an opening is provided in the liquid receiving part, and a protruding wall is formed so as to surround the opening. In a use state where the liquid is dripped onto the liquid receiving surface and the liquid sensor can detect, the top surface of the protruding wall formed so as to surround the opening is along the outer peripheral side edge of the liquid receiving portion. The liquid receiving container for a liquid sensor according to claim 9, wherein the liquid receiving container is positioned above the top surface of the standing side wall in the direction of gravity. The liquid receiving container for a liquid sensor according to claim 9, wherein a convex portion is formed between a protruding wall formed so as to surround the opening and the sensor fixing portion. The liquid according to claim 1 or 2, wherein an inner surface shape of a corner portion of an outer peripheral wall provided upright at an outer peripheral side edge portion of the liquid receiving surface is an arc shape in a cross section perpendicular to the standing direction. Liquid receiver for sensor. A first liquid receiving surface having a flat first liquid receiving surface on one side, and an outer peripheral wall erected along an outer peripheral side edge of the first liquid receiving surface, and the first liquid receiving surface One or more first groove portions disposed above and a flat second liquid receiving surface on one side, and an outer peripheral wall is erected along an outer peripheral side edge of the second liquid receiving surface A liquid sensor is fixed to one end of the second liquid receiving part, the one or more second groove parts disposed on the second liquid receiving surface, and the first groove part and the second groove part. A liquid receiving container for a liquid sensor, wherein the first liquid receiving surface and the second liquid receiving surface are positioned substantially perpendicular to each other. A first liquid receiving surface having a flat first liquid receiving surface on one side, and an outer peripheral wall erected along an outer peripheral side edge of the first liquid receiving surface, and the first liquid receiving surface One or more first groove portions disposed above and a flat second liquid receiving surface on one side, and an outer peripheral wall is erected along an outer peripheral side edge of the second liquid receiving surface A second liquid receiving part, one or more second groove parts disposed on a surface opposite to the second liquid receiving surface, and one of the first groove part and the second groove part A liquid sensor receiving container, wherein the first liquid receiving surface and the second liquid receiving surface are positioned substantially perpendicular to each other. . A first liquid receiving surface having a flat first liquid receiving surface on one side, and an outer peripheral wall erected along an outer peripheral side edge of the first liquid receiving surface, and the first liquid receiving surface One or more first groove portions disposed above and a flat second liquid receiving surface on one side, and an outer peripheral wall is erected along an outer peripheral side edge of the second liquid receiving surface A third liquid receiving surface having a second liquid receiving portion, one or more second groove portions disposed on the second liquid receiving surface, and a flat third liquid receiving surface on one side; A third liquid receiving portion having an outer peripheral wall erected along an outer peripheral side edge of the surface, one or more third groove portions disposed on the third liquid receiving surface, And a sensor fixing part for fixing the liquid sensor to one end of the groove part up to 3, wherein the first to third heat receiving surfaces are positioned substantially perpendicular to each other. container. A first liquid receiving surface having a flat first liquid receiving surface on one side, and an outer peripheral wall erected along an outer peripheral side edge of the first liquid receiving surface, and the first liquid receiving surface One or more first groove portions disposed above and a flat second liquid receiving surface on one side, and an outer peripheral wall is erected along an outer peripheral side edge of the second liquid receiving surface A second liquid receiving portion; one or more second groove portions disposed on a surface opposite to the second liquid receiving surface; and a flat third liquid receiving surface on one side. A third liquid receiving portion having an outer peripheral wall standing along the outer peripheral side edge of the third liquid receiving surface; and 1 disposed on a surface opposite to the third liquid receiving surface. Or a plurality of third groove portions and a sensor fixing portion for fixing a liquid sensor to one end of the first to third groove portions, and the first to third heat receiving surfaces are substantially perpendicular to each other. Liquid sensor characterized by being positioned in a direction Use liquid receiving container. The liquid receiving container for a liquid sensor according to any one of claims 1 to 16, wherein a hook portion is provided on a side surface of the outer peripheral wall of the liquid receiving portion. A cooling device comprising the liquid receiving container for a liquid sensor according to claim 1.

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