JP6830571B2 - Defroster - Google Patents

Description

The present invention relates to a thawing device, and more particularly to a thawing device that can be attached to a drain, a valve, or the like and has a heating function using electromagnetic induction.

The drain is provided integrally or adjacent to, for example, an oil separator that separates oil from blow-by gas generated when the engine is driven, and a heat exchanger that exchanges heat of water vapor supplied from the boiler. The separated oil and condensed water are collected and sent to a device for reuse, or discharged to the outside. Originally, it is a term indicating the produced liquid itself, but here, it is defined as collecting various liquids. Further, the liquid itself will be referred to as a drain liquid below. An example of an oil separator provided with a drain will be described below.

FIG. 11 is a cross-sectional view showing an oil separator according to the prior art. In FIG. 11, 100 is a ventilator, 101 is a drain unit, 102 is a check valve, 103 is a drain port, 104 is a filter, 105 is an inflow port, and 106 is a filter holder.

FIG. 11 is an invention disclosed in Japanese Patent Application Laid-Open No. 2014-046281, for thawing an ice body of a water faucet provided in a house or the like. Inside the ventilator 100, a filter 104 supported by a filter holder 106 is provided. The filter 104 captures the oil contained in the blow-by gas that has flowed in from the inflow port 105. A drain unit 101 is provided below the filter 104. The drain unit 101 discharges the oil separated from the blow-by gas from the drain port 103 to the outside of the ventilator 100. Further, the drain unit 101 is provided with a check valve 102 to prevent oil from flowing back from the drain port 103. In the above configuration, when the temperature of the atmosphere around the ventilator 100 drops significantly, the water vapor contained in the blow-by gas becomes condensed water, which may become an ice body in the drain unit 101. If such an ice body is formed, the check valve 102 will not operate, and the ventilator 100 will not function normally. Therefore, the following inventions have been proposed to thaw this ice body.

FIG. 12 is a cross-sectional view showing an installation state of a defrosting device using electromagnetic induction according to the prior art. In FIG. 12, 201 is a high-frequency induction heating device, 202 is a water supply pipe, 203 is a conductive layer, 204 is an inner wall, 205 is an outer wall, and 206 is a frozen portion.

FIG. 12 is an invention disclosed in Japanese Patent Application Laid-Open No. 11-148151, for heating a water supply pipe provided in a general house or the like to melt an ice body. That is, the rising portion of the water supply pipe 202 that supplies hot water to the mixed faucet hot water from a water heater (not shown) is piped behind the wall between the outer wall 205 and the inner wall 204, and the pipe is indoors or outdoors. It is designed not to be directly exposed to. Further, a conductive layer 203 made of aluminum is wound around the rising portion of the water supply pipe 202. In this configuration, when excitation is performed by a coil (not shown) inside the high-frequency induction heating device 201, an eddy current is generated in the conductive layer 203 to generate heat, and the water inside the water supply pipe 202 freezes in the frozen portion 206. The heat is transferred and the frozen part 206 is thawed.

By the way, in order to apply the thawing device as shown in FIG. 12 to the drain, the shape and structure of the heating target, that is, the metal body that generates heat by exciting the coil like the conductive layer 203 becomes an issue. That is, the drain is generally formed in a funnel shape, and the upper part of the drain has a diameter generally larger than that of a water supply pipe provided in a general house or the like. Therefore, in the thawing device shown in FIG. 13, when the heating target is wound around the outer peripheral surface of the drain, sufficient heat is not transferred to the ice body inside the drain, and it may take a long time for the ice body to be completely thawed. Conceivable. Especially in cold regions, it may not be possible to thaw the ice body. In addition, as a secondary issue, in induction heating by high frequency, the temperature of the heating target rises sharply, so it is intended that the ice body inside the drain is near the heating target before it is thawed. There is also the possibility of overheating without.

FIG. 13 is a cross-sectional view showing a PCV valve provided with a defrosting device using a PTC heater according to the prior art. In FIG. 13, 300 is a PCV valve, 301 is a cylindrical part, 302 is a valve body, 303 is a valve seat, 304 is a heating element, 305 is a heat transfer element, 306 is a heat receiving part, 307 is a heat radiating part, and 308 is a coil spring, 309. Is a partition wall.

FIG. 13 is an invention disclosed in Japanese Patent Application Laid-Open No. 2015-124611. The PCV valve 300 is provided in a PCV system in which blow-by gas is returned to the intake system and reburned together with the air-fuel mixture. The flow rate of blow-by gas flowing inside the cylindrical portion 301 is adjusted by moving the valve body 302 provided inside the cylindrical portion 301 of the PCV valve 300 to and from the valve seat 303. Further, on the PCV valve 300, a plate-shaped heating element 304 is pressed against the partition wall 309 by a coil spring 308. Further, the heat receiving portion 306 of the heating element 305 is provided so as to face the heating element 304 via the partition wall 309. In addition, the heat radiating portion 307 of the heat transfer body 305 is provided with an opening, and the valve body 302 is arranged in a state of being inserted through the opening. In the above configuration, when the heating element 304 and the coil spring 308 are energized by supplying a current from a power source (not shown), the heating element 304 generates heat. The heat generated by the heating element 304 is conducted to the heat receiving portion 306 of the heating element 305 via the partition wall 309, and further conducted to the heat radiating portion 307. The valve body 302 is heated by the heat radiating unit 307 to thaw the ice body adhering to the periphery of the valve body 302.

By the way, since the PTC heater shown in FIG. 13 transfers the heat generated by the heating element 304 to the heat receiving unit 306 via the partition wall 309 in order to heat the ice body in the vicinity of the heat radiating unit 307, the heat at this stage. The loss is not small. Therefore, it takes time to thaw the ice body as compared with the amount of power consumption, which is not preferable in terms of energy efficiency. As described above, the problem caused by the separation between the ice body to be heated and the heating element occurs not only in the device provided with the drain but also in the valve such as the PCV valve.

Japanese Unexamined Patent Publication No. 2014-046281 Japanese Unexamined Patent Publication No. 11-148151 JP-A-2015-124611

An object of the present invention is to quickly melt an ice body by directly heating the ice body with a heating target in order to solve the above problems.

The invention according to claim 1 is provided at a heating target provided inside an equipment formed so that a fluid can flow inside, and at a position outside the equipment and in the vicinity of the heating target. In an defrosting device having an induction heating coil that generates a magnetic field by a high frequency current and a drive circuit that applies a high frequency current to the induction heating coil, the heating target has a first configuration provided for heat generation. It is a defrosting apparatus including a member and a second constituent member provided for heat transfer, wherein the first constituent member and the second constituent member are made of different metal materials.

The invention according to claim 2 is the invention according to claim 1, wherein the first component is arranged in the vicinity of the induction coil and has a heat generating function due to generation of an eddy current generated by electromagnetic induction. The thawing of the component 2 is characterized in that it is arranged in a place where an ice body is likely to be generated inside the equipment and also has a heat transfer function of further transferring the heat transferred from the first component to the surroundings. It is a device.

The invention according to claim 3 is characterized in that, in the invention according to claim 2, the first component is made of stainless steel, and the second component is made of aluminum or an aluminum alloy. It is a defroster.

The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the first constituent member and the second constituent member are joined to each other or joined to each other. It is a defrosting device characterized in that it is provided so as to be in contact with each other.

The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the second component is in the vicinity of a member movably provided inside the device. It is a defrosting device characterized by being provided in.

The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the second component is a drain liquid that has flowed into a drain body provided in the device. It is a defrosting device characterized by having a function related to discharge.

The invention according to claim 7 is the invention according to claim 6, wherein a part or all of the second component is provided inside the drain main body and the drain stays in the drain main body. The thawing device is characterized in that it is provided as a valve seat that prevents the drain liquid from flowing back upward from the drain main body portion by coming into contact with a valve body that floats by the liquid.

The invention according to claim 8 is the invention according to claim 7, further comprising aluminum or an aluminum alloy, inside the first constituent member, and on the inner peripheral surface of the first constituent member. The defrosting device is provided so as to abut and has a float guide member that guides the valve body so as to correctly contact the valve seat when the valve body floats. ..

The invention according to claim 9 is the invention according to any one of claims 1 to 5, wherein the second component is in contact with a valve body or a valve seat provided inside the equipment. It is a defrosting device characterized by being made in the above manner.

According to the first aspect of the present invention, a first component member provided for heat generation and a second configuration provided for heat transfer inside an equipment formed so that a fluid can flow inside. Since the heating target provided with the members is provided, the ice body formed inside the equipment and its peripheral members can be reliably thawed.

According to the second aspect of the present invention, the heat generated by the first component can be quickly transferred to the ice body through the second component member, so that the ice body can be quickly thawed. become.

According to the third aspect of the present invention, the heat generation property of the first component member and the heat transfer property of the second component member can be enhanced, and thus the ice body can be thawed quickly.

According to the invention of claim 4, the heat transfer property from the first constituent member to the second constituent member can be improved.

According to the invention of claim 5, since the movably provided member is rapidly heated by the second constituent member, the ice body adhering to the movably provided member is quickly thawed. Can be done.

According to the invention of claim 6, since the second component has a function related to the discharge of the drain liquid, the other component having the function can be replaced with the second component, and the function can be replaced. By coexisting the other component having the above and the second constituent member, it is possible to prevent the occurrence of a problem that the flow path of the drain liquid cannot be secured.

According to the invention of claim 7, since the second component also serves as the valve seat, the ice body adhering to the valve seat can be quickly thawed.

According to the eighth aspect of the invention, heat is easily transferred from the first constituent member to the float guide member, so that the ice body adhering to the float guide member can be quickly thawed.

According to the invention of claim 9, even when the second component cannot be used as a valve seat, the valve body or the ice body around the valve seat can be quickly thawed.

It is sectional drawing which shows the outline of the drain and the oil separator provided with the defrosting apparatus which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the heating target of the thawing apparatus which concerns on 1st Embodiment of this invention. It is a block diagram which shows the structure of the defrosting apparatus which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the state which the ice body was generated inside the drain body part. It is sectional drawing which shows the outline of the drain and the oil separator provided with the defrosting apparatus which concerns on 2nd Embodiment of this invention. It is sectional drawing which shows the state which excluded the valve body and the float from the drain provided with the defrosting apparatus which concerns on 2nd Embodiment of this invention. It is sectional drawing which shows the heating target of the thawing apparatus which concerns on 2nd Embodiment of this invention. A second component of the heating target according to the second embodiment of the present invention is shown, (a) is a front view, and (b) is a plan view. A third component of the heating target according to the second embodiment of the present invention is shown, (a) is a sectional view taken along line BB, and (b) is a plan view. It is sectional drawing which shows the outline of the drain and the oil separator provided with the defrosting apparatus which concerns on 3rd Embodiment of this invention. It is sectional drawing which shows the oil separator which concerns on the prior art. It is sectional drawing which shows the installation state of the defrosting apparatus using electromagnetic induction which concerns on the prior art. It is sectional drawing which shows the PCV valve provided with the defrosting apparatus using the PTC heater which concerns on the prior art.

The defrosting apparatus according to the first embodiment of the present invention will be described. FIG. 1 is a cross-sectional view showing an outline of a drain and an oil separator provided with a thawing device according to the first embodiment of the present invention. In FIG. 1, 20 is a drain component, 21 is a peripheral side surface, 22 is an inclined surface, 23 is a discharge pipe, 23a is an inner peripheral surface, 24 is a drain body, 30 is an oil separator component, and 31 is a peripheral side surface. 32 is the bottom surface, 32a is the inner peripheral surface, 33 is the drain cap, 34 is the valve body, 35 is the disc-shaped portion, 36 is the support shaft portion, 41 is the first component member, 41a is the inner peripheral surface, 42. Is the second component, 43 is the valve seat, 43a is the upper surface, 44 and 47 are the peripheral side surfaces, 48 is the inclined surface portion, 49 is the discharge pipe portion, 49a is the inner peripheral surface, 90 is the power supply / control unit, 91. Is an induction heating coil and 92 is a temperature sensor. Further, FIG. 2 is a cross-sectional view showing a heating target of the thawing apparatus according to the first embodiment of the present invention. In FIG. 2, 40 is a heating target, 43b is a lower surface, 45a and 45b are openings, 46 is a third component, and other reference numerals are the same as those in FIG. In addition, FIG. 3 is a block diagram showing a configuration of a defrosting device according to the first embodiment of the present invention. In FIG. 3, 10 is a device to be mounted, 93 is a decompression device, 94 is a controller, 95 is a drive circuit, 96 is a resonance capacitor, 97 is a device control unit, 98 is a display unit, and other reference numerals are the same as those in FIG. Show things. Further, FIG. 4 is a cross-sectional view showing a state in which an ice body is generated inside the drain main body. In FIG. 4, 25, 26 and 27 are ice bodies, and other reference numerals are the same as those in FIG.

First, the overall configuration of the defrosting apparatus according to the first embodiment and the components other than the heating target will be described. As shown in FIG. 3, the defrosting device 93 is mounted on the mounting target device 10 such as a passenger car or a truck. That is, it is mounted in the vicinity of the drain component 20 provided integrally with the oil separator component 30 which is a device that functions as an oil separator for blow-by gas. Further, also in other embodiments such as the second embodiment described below, it is assumed that the defrosting device is mounted on a drain provided integrally with an oil separator of a passenger car, a truck, or the like. The defrosting device according to the present invention is not limited to the drain provided in passenger cars, trucks, etc., and is made of air conditioning equipment, hot water supply equipment, drainage equipment, boilers, or liquids of buildings such as houses. It can also be applied to a drain provided in a liquid flow path, such as a production machine for the product. Further, it can be preferably applied to various valves such as the PCV valve according to the prior art shown in FIG. 14, which have no drainage and in which the liquid convected inside may freeze. However, it is a condition that the heating target can be arranged inside the structure and at least the induction heating coil and the temperature sensor can be arranged in the vicinity of the heating target. That is, the defrosting device according to the present invention is used for a drain that collects various liquids and can secure a space for arranging an induction heating coil and a temperature sensor along the outer peripheral surface of the drain body. It can be widely applied regardless.

Further, as shown in FIG. 1, the defrosting device 93 arranges the heating target 40 shown in FIG. 2 inside the drain component 20 integrally provided with the oil separator component of the mounting target device 10. The induction heating coil 91 and the temperature sensor 92 are provided so as to be located around the drain component 20 and near the heating target 40. The induction heating coil 91 is arranged so as to be as close as possible to the heating target 40 in order to maximize the eddy current generated in the heating target 40 by excitation. That is, the induction heating coil 91 is in contact with the peripheral side surface portion 21 of the drain body portion 24 which is in contact with the first constituent member 41 and surrounds the first constituent member 41 of the heating target 40 from the outside. , It is provided so that it is almost in contact with each other. The resonance capacitor 96 constitutes a resonance circuit together with the induction heating coil 91, and is preferably arranged in the vicinity of the induction heating coil 91, but the arrangement is not particularly limited. The shape of the induction heating coil is not limited to the cylindrical shape as shown in FIG. 1, but is located outside the equipment such as the drain body 24 and in the vicinity of the first constituent member 41. If it is provided, it may have a conical shape, a flat circular spiral shape, a flat rectangular spiral shape, or the like. For example, in the case of the PCV valve according to the prior art shown in FIG. 14, it is possible to apply coils having various shapes, such as providing a planar circular spiral coil above the heat transfer body 305.

The temperature sensor 92 is provided above or below the induction heating coil 91 and close to the induction heating coil 91. Since the heating target 40 is inside the drain body 24 or the like, the temperature sensor 92 outside the drain body 24 or the like cannot be directly attached. Therefore, by attaching the temperature sensor 92 to the outer peripheral surface of the portion of the drain body 24 in contact with the heating target 40, it is possible to obtain a measured value of a temperature as close as possible to the actual temperature of the heating target 40. .. The number of temperature sensors may be two or three or more.

As shown in FIG. 3, the power supply / control unit 90 includes a controller 94 and a drive circuit 95. The controller 94 performs predetermined control according to a signal from the temperature sensor 92 or the like based on memory setting information (not shown). For example, when the temperature sensor 92 detects a sudden temperature rise exceeding the permissible limit, the drive circuit 95 is turned off to stop the heat generation of the induction heating coil 91. Further, when an abnormal situation occurs, the device control unit 97 of the mounting target device 10 is notified, and the notification content can be displayed on the display unit 98. The drive circuit 95 generates a high frequency current that heats the induction heating coil 91. Further, unlike the induction heating coil 91, the power supply / control unit 90 is not particularly limited in arrangement. The power supply / control unit 90 shown in FIG. 3 is merely an example of the embodiment of the present invention, and the circuit configuration of the power supply / control unit in the present invention is not limited to this. For example, the device control unit 97 may execute a part or all of the functions of the controller 94.

Further, the configuration of the defrosting device 93 and its surroundings will be described. As shown in FIG. 1, the mounting target device 10 collects the oil separator component 30 for separating the oil from the blow-by gas and the oil separated from the blow-by gas by the oil separator component 30 and discharges the oil to the outside. The drain component 20 is provided. Further, the oil separator component 30 and the drain component 20 are integrally provided by a resin container as an outer shell. Further, the oil separated from the blow-by gas by a filter (not shown) drops or adheres to the peripheral side surface portion 31 of the oil separator constituent portion 30 and the inner peripheral surface 32a of the bottom surface portion 32, and then stays on the bottom surface portion 32. I will go. When the surface of the oil retained on the bottom surface portion 32 exceeds the upper end portion of the drain cap 33, the oil further flows down into the drain body portion 24 of the drain configuration portion 20 via the second component member 42.

The drain component 20 is made of resin and includes a drain body 24 and a discharge pipe 23. The drain body portion 24 extends vertically downward from the center of the bottom surface portion 32 of the oil separator constituent portion 30, and is continuously downward from the peripheral side surface portion 21 and the lower end portion of the peripheral side surface portion 21 formed in a cylindrical shape. It is provided with an inclined surface portion 22 extending in an inverted truncated cone shape. The discharge pipe 23 is formed so as to extend vertically downward from the center of the inclined surface portion 22, and discharges the oil that has flowed into the drain main body portion 24 to the outside. The oil discharged to the outside is sent to the oil tank via the delivery tube, but the configuration of the portion (not shown) is not limited to a specific configuration.

Further, the drain component 20 is provided with a valve body 34 inside the drain body 24. The valve body 34 includes a disk-shaped portion 35 and a support shaft portion 36, and prevents oil from flowing back from the drain main body portion 24 to the oil separator constituent portion 30. That is, when the upper surface of the oil stored in the drain body portion 24 rises, the disc-shaped portion 35 rises due to fluid pressure or buoyancy, but when the disc-shaped portion 35 rises to the point where it comes into contact with the second component 42. The disc-shaped portion 35 is closed at the opening between the oil separator constituent portion 30 and the drain main body portion 24. The support shaft portion 36 is movably supported with respect to the second component 42, and guides the ascending or descending of the disc-shaped portion 35. In this embodiment, the oil separator component 30 and the drain component 20 are integrated, but for example, the drain component 20 is screwed into the oil separator component 30 so as to be integrated. May be good. Further, when the check valve is provided in the external device (not shown in FIG. 1), or when the check valve is not required, the valve body 34 may not be provided.

Next, the heating target 40 will be described with reference to FIG. The heating target 40 is thawed to prevent water droplets generated by dew condensation from freezing inside the drain body portion 24 or the discharge pipe 23, and further inside the oil separator component portion 30 and obstructing the flow of oil and blow-by gas. It plays a central role in the purpose of the device. That is, in order to eliminate the situation where the ice body such as the drain main body 24 fixes the check valve or blocks the discharge pipe as soon as possible, a component whose purpose is heat generation and a configuration whose purpose is heat transfer. Two types of constituent members with the members are provided. As described above, in the present invention, since the ice body can be quickly thawed by effective heating, the energization of the induction heating coil 91 can be stopped in a shorter time, and the ice body is in contact with the heating target 40 or is in contact with the heating target 40. Since it is possible to prevent the drain body 24 and the valve body 34, which are arranged very close to each other, from being excessively heated, it is possible to reduce power consumption and ensure safety. It is possible to configure one component each for heat generation and one component for heat transfer, but in this embodiment, two components for heat transfer are used. The number and range of regions where water droplets and the like freeze, or the manufacturing cost of the heating target, for the purpose of also serving as the functions of other members provided inside the drain body 24, as if they were provided individually. 2 or 3 or more may be provided in consideration of reducing the number. In other words, in the present invention, one or more of each of the two types of constituent members for the purpose of heat generation and heat transfer may be provided.

The heating target 40 of this embodiment includes a first constituent member 41, a second constituent member 42, and a third constituent member 46. The first constituent member 41 is a constituent member for the purpose of heat generation, and is formed in a substantially cylindrical shape. Further, the first component 41 is made of stainless steel because it has a relatively high electrical resistivity and a high heat conversion efficiency can be obtained with respect to the generated eddy current. The first component 41 may be made of another material having a relatively high electrical resistivity, such as iron. Further, a material having a substantially cylindrical shape made of iron may be subjected to rust-preventive plating such as zinc or nickel. That is, the first component 41 may be plated regardless of whether it is a single metal or alloy, as long as it can obtain high heat conversion efficiency with respect to the generated eddy current. Further, the first constituent member 41 is preferably formed into a simple substantially cylindrical shape because a material having a relatively high processing cost is used, but the shape is not limited to the substantially cylindrical shape. , It is possible to change it as appropriate according to the shape of the drain body.

Further, in the first component 41, the second component 42 and the third component 46 are lightly press-fitted onto the inner peripheral surface 41a side. By lightly press-fitting the second constituent member 42 and the third constituent member 46, the surfaces of the first constituent member 41 and the second constituent member 42 and the third constituent member 46 are surely brought into contact with each other to generate heat. It will be easier to convey. In addition, there is an advantage that the second component 42 or the third component 46 can be prevented from being detached due to the vibration generated in the mounting target device 10. Although the second component 42 or the third component 46 is slightly inferior in heat transferability, it is fixed to the first component 41 with a resin sheet such as polyimide or an adhesive. May be good. Further, in order to more reliably fix the second component 42 or the third component 46 to the first component 41, the second component 42 or the third component 46 is screwed and fixed to the first component 41, or a screw. It may be fixed by.

Further, as shown in FIG. 1, the upper end of the first component 41 is located slightly above the upper end of the induction heating coil 91 in the vertical direction, that is, in the direction in which gravity acts, and the lower end thereof. Is located slightly below the lower end of the induction heating coil 91. The first reason for this is that when a high-frequency current flows through the induction heating coil 91, a strong exciting force acts on the side of the induction heating coil 91. Therefore, in the vertical direction, the upper end of the first component 41 is located at or near the upper end of the induction heating coil 91, and the lower end thereof is located at or near the lower end of the induction heating coil 91. If it is formed in, the exciting force of the induction heating coil 91 can be fully utilized. In other words, when the upper end portion of the first component 41 is located below the upper end portion of the induction heating coil 91 and the lower end portion is located above the upper end portion of the induction heating coil 91, This means that the excitation force of the induction heating coil 91 is not fully utilized. Further, in the vertical direction, even if the upper end portion of the first component 41 is located slightly above the upper end portion of the induction heating coil 91 and the lower end portion is located slightly below the lower end portion of the induction heating coil 91. A similar effect can be obtained. The second reason is that as the distance from the induction heating coil 91 increases, the exciting force weakens and the heat generation efficiency decreases, so that the heating effect decreases. At this time, the first component 41 having good heat generation efficiency does not always have good heat transfer efficiency, and it cannot be said that effective heating is always performed at the portion where the heat generation efficiency deteriorates. Therefore, the induction heating coil It is meaningless to make the first component 41 extremely large with respect to 91.

On the other hand, as shown in FIG. 2, the second constituent member 42 is a constituent member for the purpose of heat transfer, and is formed in a substantially bottomed cylindrical shape. Further, the second component 42 is made of an aluminum alloy because it has a high thermal conductivity and heat is quickly transferred. The second component 42 may be made of another material having a high thermal conductivity, such as copper or a copper alloy. Further, a material having a substantially bottomed cylindrical shape made of copper or the like may be subjected to so-called dowel plating, in which aluminum is melted and covered. Further, an aluminum alloy, a copper alloy, or the like may be molded into a predetermined shape by press working. In addition, when it is not necessary to have the functions described later, a thin plate material of aluminum or copper may be molded into a predetermined shape by a Yagen mold or the like.

Further, the second component 42 has not only a function for thawing an ice body but also a part of a check valve function. That is, the valve seat portion 43 is formed in the second constituent member 42 so as to close the upper end portion of the peripheral side surface portion 44 having a substantially cylindrical shape. The valve seat portion 43 is formed in a substantially disk shape, and further has two openings, an opening 45a and an opening 45b, and two openings that do not appear in the cross section of FIG. 2, for a total of four openings. Has been done. As described above, in the valve body 34, when the upper surface of the oil stored in the drain body portion 24 rises, the disc-shaped portion 35 rises due to the pressure and buoyancy of the oil, so that the disc-shaped portion 35 becomes the valve seat portion. Upon contact with the lower surface 43b of the 43, the opening 45a, the opening 45b, and the other two openings are closed to prevent oil from flowing back from the lower surface 43b side of the valve seat portion 43 to the upper surface 43a side.

As described above, the second constituent member 42 is a constituent member for the purpose of heat transfer, but since it uses a material such as an aluminum alloy or a copper alloy that is easy to cut or drill, By forming the shape of the valve seat of the check valve, it also has a second purpose. For example, when the defrosting device 93 is to be retrofitted to the existing drain, it may be formed in a simple cylindrical shape for the purpose of heat transfer only. Further, for example, when an ice body is not generated above the first component 41 due to the influence of waste heat generated from other parts of the equipment 10 to be mounted, the first component 41 and the third configuration Only the member 46 may be provided (in this case, the third component 46 is positioned as what is defined as the "second component" in claims 1 and 2).

The third component 46 is formed on a substantially cylindrical peripheral side surface portion 47, an inclined surface portion 48 extending downward from the lower end portion of the peripheral side surface portion 47 and formed in a substantially inverted truncated cone shape, and an inclined surface portion 48. It is provided with a discharge pipe portion 49 that extends and is formed in a substantially cylindrical shape. Further, the third constituent member 46 is formed of an aluminum alloy because, like the second constituent member 42, it has a high thermal conductivity and heat is quickly transferred. The third component 46 may be made of a material having a high thermal conductivity, and it is not necessary to use the same material as the second component 42. The peripheral side surface portion 47 is a portion that is lightly press-fitted into the inner peripheral surface 41a side of the first constituent member 41. The inclined surface portion 48 is formed in accordance with the inclination of the inclined surface portion 22 of the drain main body portion 24. It should be noted that this portion may be formed so as to correspond to the shape of the inner peripheral surface of the drain body portion 24, and does not necessarily have to be inclined. The discharge pipe portion 49 is a portion provided inside the discharge pipe 23, and is formed in an elongated substantially cylindrical shape. Most of the discharge pipes 23 have a relatively small diameter, but the discharge pipe portion 49 has a thin wall thickness and is provided so as to be in contact with the inner peripheral surface 23a as a whole, so that the diameter of the inner peripheral surface 23a is provided. Since the difference between the diameter and the diameter of the inner peripheral surface 49a is small, the oil flow is not obstructed. If there is no risk of the water or oil inside the discharge pipe 23 freezing, the entire discharge pipe portion 49 or the third component 46 may be omitted.

Further, the first component 41, the second component 42, and the third component 46 are not strongly press-fitted into the drain body portion 24. Therefore, for example, it is conceivable that the first constituent member 41 is lifted by the vibration generated in the mounting target device 10, and the second constituent member 42 and the third constituent member 46 are further separated. Therefore, in order to prevent these detachments, the drain cap 33 shown in FIG. 1 prevents the detachment. That is, the drain cap 33 is formed of resin and is press-fitted into the drain main body 24 while pressing the first constituent member 41 from above, thereby preventing the first constituent member 41 from floating. The heating target is not limited to the above first component 41, second component 42, and third component 46, and may be, for example, a PCV valve according to the prior art shown in FIG. For example, the defrosting apparatus of the present invention can be preferably applied by forming a rectangular plate like the heat transfer body 305 and arranging the heating target in contact with or extremely close to the valve body 302. ..

As described above, in the defrosting device 93 according to the first embodiment of the present invention, the first component 41 provided for heat generation inside the drain main body 24, the drain main body 24 and its periphery thereof. Since the heating target 40 provided with the second component 42 and the third component 46 provided for heat transfer to the members is provided, the ice bodies such as the ice bodies 25 and 26 in FIG. 4 are surely secured. Can be decompressed. Further, since the heat generated by the first component 41 can be quickly transferred to the ice body via the second component 42 and the third component 46, the ice body can be quickly thawed. become. Further, since the ice body can be quickly thawed by effective heating, the energization of the induction heating coil 91 can be stopped in a shorter time, and the ice body is placed in contact with or very close to the heating target 40. Since it is possible to prevent the drain body 24, the valve body 34, and the like from being excessively heated, it is possible to reduce power consumption and ensure safety.

In addition, since the second component 42 and the third component 46 are in contact with the first component 41, the first component 41 to the second component 42 and the third component 46 are in contact with each other. The heat transfer property to 46 can be improved. Further, in the vertical direction, the upper end of the first component 41 is positioned above the upper end of the induction heating coil 91, and the lower end thereof is below the lower end of the induction heating coil 91. Since it is provided so as to be located at, the eddy current due to the excitation of the induction heating coil can be efficiently generated in the first component 41. Further, the ice body generated inside the oil separator constituent portion 30 provided integrally with the drain main body portion 24 can be thawed by the second constituent member 42. Further, since the second component 42 has a function as a valve seat, the other component having the function can be replaced with the second component 42, and the other component having the function and the second configuration can be used. By coexisting with the member 42, it is possible to prevent the occurrence of a problem that the flow path of the drain liquid cannot be secured. Further, since the third component 46 is provided inside the discharge pipe 23, the ice body adhering to the discharge pipe can be quickly thawed. Further, the first constituent member 41 formed of a relatively hard material has a simple shape, and the second constituent member 42 and the third constituent member 46 formed of a relatively soft material are processed into a complicated shape. Therefore, the processing is easy and the processing cost can be reduced. Also, is the defrosting device of the present invention a device equipped with a drain? Since the movably provided member is quickly heated by the second component, the ice body attached to the movably provided member can be quickly thawed.

Subsequently, the defrosting device according to the second embodiment of the present invention will be described. FIG. 5 is a cross-sectional view showing an outline of a drain and an oil separator provided with a thawing device according to a second embodiment of the present invention. In FIG. 5, 37 is an oil separator constituent part, 38 is a peripheral side surface portion, 39 is a bottom surface portion, 39a is an inner peripheral surface, 50 is a drain component portion, 51 is a peripheral side surface portion, 52 is a bottom surface portion, and 53 is a discharge pipe. 53a is the inner peripheral surface, 54 is the support shaft, 55 is the valve body, 56 is the float, 57 is the drain cap, 61 is the first component, 62 is the second component, 64 is the disk-shaped part, and 65 is. The valve seat portion, 66 is a fitting portion, 68 is a third component member, 69 is a disk-shaped portion, 79 is a drain main body portion, and other reference numerals are the same as those in FIG. Further, FIG. 6 is a cross-sectional view showing a state in which the valve body and the float are excluded from the drain provided with the thawing device according to the second embodiment of the present invention. In FIG. 6, 58 is a cylindrical portion, 59 is a collar-shaped portion, 63 is a cylindrical portion, 69a is an upper surface, 71, 72, 73 and 74 are float guide members, and other reference numerals are shown in FIGS. 1 and 5. Show the same thing. Further, FIG. 7 is a cross-sectional view showing a heating target of the thawing apparatus according to the second embodiment of the present invention. In FIG. 7, 60 is a heating target, 61a is an inner peripheral surface, 64a is an opening, 64b is an inclined surface, 64c and 64d are openings, 67 is a flange-shaped portion, 67a is a stepped surface, 70 is a flange-shaped portion, and 70a. Is a stepped surface, 71a is an inclined surface, 71b is a float receiving surface, 72a is an inclined surface, 72b is a float receiving surface, 73a is an inclined surface, 73b is a float receiving surface, 74a is an inclined surface, 74b is a float receiving surface, and 75 is. The discharge pipe portion, 75a is an inner peripheral surface, and other reference numerals are the same as those in FIGS. 1 and 5. In addition, FIG. 8 shows a second component of the heating target according to the second embodiment of the present invention, (a) is a front view, and (b) is a plan view. In FIG. 8, 64e, 64f, 64g, 64h, 64i and 64j are openings, and the other reference numerals are the same as those in FIGS. 5 and 7. 9A and 9B show a third component of the heating target according to the second embodiment of the present invention, where FIG. 9A is a sectional view taken along line BB and FIG. 9B is a plan view. In FIG. 9, 76 and 77 are float guide members, 77a is an inclined surface, 77b is a float receiving surface, 78 is a float guide component, and other reference numerals are the same as those in FIG. 7.

The thawing device according to the second embodiment of the present invention has a heating target 60 as a component for heat generation and heat transfer, similarly to the heating target 40 in the thawing device of the first embodiment. Two types of constituent members are provided. The same applies to the fact that two constituent members are provided for the purpose of heat transfer. That is, as shown in FIG. 7, the heating target 60 includes a first constituent member 61, a second constituent member 62, and a third constituent member 68. The first constituent member 61 is a constituent member for the purpose of heat generation, and is formed in a substantially cylindrical shape. Further, the first constituent member 61 is made of stainless steel like the first constituent member 41. The first component 61 may be made of another material having a relatively high electrical resistivity such as iron, and a substantially cylindrical material made of iron is subjected to rust-preventive plating such as zinc or nickel. It may be the one that has been used. Further, it is the same as the heating target 40 in that the second constituent member 62 and the third constituent member 68 are lightly press-fitted on the inner peripheral surface 61a side of the first constituent member 61. Therefore, the first component 61 is in contact with the peripheral side surface portion 51 of the drain body portion 79. The shape of the drain component 50 is different in each part from that of the defrosting device according to the first embodiment, but there is no particular functional difference.

The second component 62 is a component for the purpose of heat transfer, and also has a role as a member of the valve seat of the check valve. That is, as shown in FIGS. 7 and 8, the second constituent member 62 is formed into a short substantially cylindrical shape, and the fitting portion 66 and the fitting portion 66 which are lightly press-fitted into the first constituent member 61. A disc-shaped portion 64 formed so as to close the upper end portion, a cylindrical portion 63 having a diameter smaller than that of the fitting portion 66 and protruding upward from the disc-shaped portion 64, and a cylindrical portion 63. A valve seat portion 65 formed like a partition wall between the fitting portion 66 and the cylindrical portion 63 is provided. The cylindrical portion 63 is surrounded and protected by the cylindrical portion 58 of the drain cap 57. Further, the second component 62 is firmly fixed to the drain main body 79 by lightly press-fitting the flange-shaped portion 59 of the drain cap 57 into the drain main body 79. The disk-shaped portion 64 has a slightly larger diameter than the fitting portion 66, and its peripheral edge portion is formed as a flange-shaped flange-shaped portion 67. The stepped surface 67a of the flange-shaped portion 67 defines the press-fitting depth when the fitting portion 66 is lightly press-fitted into the first constituent member 61. As shown in FIG. 8B, the valve seat portion 65 has an opening 64a formed in the center, and the openings 64c, 64d, 64e, 64f, 64g, 64h, 64i and so as to surround the opening 64a. 64j is formed. Normally, the oil dropped on the inner peripheral surface 39a of the bottom surface portion 39 convects on the bottom surface portion 39, but when the height exceeds the cylindrical portion 58, the oil flows down to the drain body portion 79.

As shown in FIG. 5, the opening 64a is inserted with a support shaft 54 provided integrally with a valve body 55 that moves in the vertical direction in conjunction with the vertical movement of the float 56. That is, when the support shaft 54 is inserted into the opening 64a, the support shaft 54 moves in the vertical direction while being guided by the opening 64a. Since the movement of the valve body 55 is restricted by the support shaft 54, the valve body 55 moves only in the vertical direction without shifting in the horizontal direction. Further, the lower side of the opening 64a is formed as a substantially truncated cone-shaped inclined surface 64b so as to attract the tip end portion of the support shaft 54. The openings 64c, 64d, 64e, 64f, 64g, 64h, 64i and 64j are closed by the valve body 55 when the valve body 55 rises and comes into contact with the valve seat portion 65, so that the oil is drained from the drain body portion 79. Prevents backflow from the oil to the oil separator component 37.

As shown in FIGS. 7 and 9, the third component 68 is a portion forming the float guide component 78, and the float guide members 71, 72, 73 extend upward from the disc-shaped portion 69. , 74, 76 and 77, and a discharge pipe portion 75 extending downward from the disc-shaped portion 69. Further, the third component 68 is made of an aluminum alloy because it has a high thermal conductivity and heat is quickly transferred, like the third component 46 of the first embodiment. The disk-shaped portion 69 is a portion that serves as a base for the third constituent member 68, and is provided in a state of being in contact with the bottom surface portion 52 of the drain body portion 79, as shown in FIG. Further, as shown in FIG. 7, the disc-shaped portion 64 has a flange-shaped flange-shaped portion 70 on the lower peripheral edge portion. The stepped surface 70a of the flange-shaped portion 70 defines the press-fitting depth when the float guide members 71, 72, 73, 74, 76 and 77 are lightly press-fitted into the first constituent member 61. As shown in FIG. 5, the discharge pipe portion 75 is provided in a state of being inserted inside the discharge pipe 53. Further, since the discharge pipe portion 75 is thin and is provided so as to be in contact with the inner peripheral surface 53a of the discharge pipe 53 as a whole, the diameter of the inner peripheral surface 53a and the inner peripheral surface 75a The difference from the diameter is small and does not obstruct the flow of oil.

As shown in FIG. 9B, the float guide members 71, 72, 73, 74, 76 and 77 are arranged at equal intervals and facing each other. Further, as shown in FIG. 6, the float guide members 71, 72, 73 and 74 are provided so that the entire outer surface is in contact with the inner peripheral surface 61a of the first constituent member 61, and is shown in FIG. The entire outer surface of the float guide members 76 and 77 that are not provided is in contact with the inner peripheral surface 61a of the first constituent member 61. Therefore, heat is rapidly transferred from the first component 61 to the float guide members 71, 72, 73, 74, 76 and 77, and the area surrounded by the float guide members 71, 72, 73, 74, 76 and 77 A certain ice body can be thawed quickly.

Further, as can be seen from FIG. 5, the float guide members 71, 72, 73, 74 and 77 are arranged so as to surround the float 56, and guide the float 56 so that the float moves up and down within a predetermined range. .. Further, as shown in FIGS. 7 and 9A, the float receiving surfaces 71b, 72b, 73b, 74b and 77b of the float guide members 71, 72, 73, 74 and 77 have disc-shaped portions in the vertical direction. It is formed so as to be located higher than the upper surface 69a of 69, and the float guide member 76 (not shown) is also formed in the same manner. This is intended to prevent the oil from flowing into the discharge pipe portion 75 and to prevent the float 56 from sticking to the upper surface 69a. Further, the float guide members 7 1, 72, 73, 74 and 77 have inclined surfaces 71a, 72a, 73a, 74a and 77a having a downward slope toward the center of the disc-shaped portion 69 in the vicinity of their upper ends. The float guide member 76 (not shown) is also formed in the same manner. By forming these inclined surfaces, it is possible to prevent the valve body 55 and the like from being caught in the upper end portion of any of the float guide members.

According to the configuration of the defrosting device according to the second embodiment, the second component 62 and the third component 68 are provided with a function related to the discharge of the drain liquid, that is, the second configuration. Since the member 62 and the third constituent member 68 are formed in a shape that completely functions as a constituent member of the check valve, other components having the same function can be attached to the second constituent member 62 and the third constituent member 68. It can be replaced, and by coexisting the other component having the function and the second constituent member 62 and the third constituent member 68, it is possible to prevent the occurrence of a problem that the flow path of the drain liquid cannot be secured.

Further, the defrosting device according to the third embodiment of the present invention will be described. FIG. 10 is a cross-sectional view showing an outline of a drain and an oil separator provided with a thawing device according to a third embodiment of the present invention. In FIG. 10, 80 is a first component member, 81 is a peripheral side surface portion, 82 is an inclined surface portion, 83 is a discharge pipe portion, and other reference numerals are the same as those in FIG.

The defrosting device according to the third embodiment of the present invention has a configuration similar to that of the defrosting device according to the first embodiment, but corresponds to the third component 46 in the first embodiment. The first constituent member 80 has a peripheral side surface portion 81, an inclined surface portion 82, and a discharge pipe portion 83 without any provision, that is, the first constituent member 41 and the third constituent member 41 in the first embodiment. The constituent members 46 are integrated. If the third component 46 has a relatively simple shape as shown in FIG. 2, no ice body is formed inside the discharge pipe 23, or it is rare. In such a case, there is no problem even if the heat transfer property of the heating target provided inside the discharge pipe 23 is slightly low. Further, even the first constituent member 80, which is relatively difficult to process, can be integrally molded by press working or the like if it has a simple shape, and can be extended to the discharge pipe. Therefore, if the configuration of the defrosting device according to this embodiment is adopted, the number of parts can be reduced, and the discharge pipe portion 83 of the first constituent member 80 is press-fitted into the discharge pipe 23 to press the first constituent member 80 into the discharge pipe 23. It has the advantage that it can be fixed more firmly.

The present invention is not limited to the contents described above, and for example, the second component has a flow path groove for discharging the drain liquid, a filter holder, and a valve holder. It can be applied to various drains as long as it does not deviate from the scope described in each claim.

10 Equipment to be mounted 20 Drain component 21 Peripheral side surface 22 Inclined surface 23 Discharge pipe 23a Inner peripheral surface 24 Drain body 25 Ice body 26 Ice body 30 Oil separator component 31 Peripheral side surface 32 Bottom surface 32a Inner peripheral surface 33 Drain Cap 34 Valve body 35 Disk-shaped portion 36 Support shaft portion 37 Oil separator component 38 Peripheral side surface 39 Bottom surface 39a Inner peripheral surface 40 Heating target 41 First component 41a Inner peripheral surface 42 Second component 43 Valve Seat 43a Upper surface 43b Lower surface 44 Peripheral side surface 45a Opening 45b Opening 46 Third component 47 Peripheral side surface 48 Inclined surface 49 Discharge pipe 49a Inner peripheral surface 50 Drain component 51 Peripheral side surface 52 Bottom 53 Discharge Pipe 53a Inner peripheral surface 54 Support shaft 55 Valve body 56 Float 57 Drain cap 58 Cylindrical part 59 Cylinder-shaped part 60 Heating target 61 First component 61a Inner peripheral surface 62 Second component 63 Cylindrical part 64 Disk Shape 64a Opening 64b Inclined surface 64c Opening 64d Opening 64e Opening 64f Opening 64g Opening 64h Opening 64i Opening 64j Opening 65 Valve seat 66 Fitting part 67 Cylinder-shaped part 67a Step surface 68 Third Member 69 Disc-shaped portion 69a Top surface 70 Cylinder-shaped portion 70a Stepped surface 71 Float guide member 71a Inclined surface 71b Float receiving surface 72 Float guiding member 72a Inclined surface 72b Float receiving surface 73 Float guiding member 73a Inclined surface 73b Float receiving surface 74 Float guide member 74a Inclined surface 74b Float receiving surface 75 Discharge pipe portion 75a Inner peripheral surface 76 Float guide member 77 Float guide member 77a Inclined surface 77b Float receiving surface 78 Float guide component 79 Drain main body 80 First component 81 Peripheral side surface 82 Inclined surface 83 Discharge pipe 90 Power supply / control unit 91 Inductive heating coil 92 Temperature sensor 93 Defroster 94 Controller 95 Drive circuit 96 Resonant capacitor 97 Equipment control 98 Display 100 Ventilator 101 Drain unit 102 Check valve 103 Drain port 104 Filter 105 Inflow port 106 Filter holder 201 High frequency induction heating device 202 Water supply pipe 203 Conductive layer 204 Inner wall 205 Outer wall 206 Freezing part 300 PCV valve 301 Cylindrical part 302 Valve body 303 Valve seat 304 Heat generator 305 Heat transfer body 306 Heat receiving Part 307 Heat dissipation part 308 Coil spring 309 Bulkhead

Claims (7)

An induction target provided inside the equipment formed so that fluid can flow inside, and an induction that is provided outside the equipment and near the heating target and generates a magnetic field by a high-frequency current. In a defrosting device having a heating coil and a drive circuit for applying a high frequency current to the induction heating coil.
The heating target includes a first component provided for heat generation and a second component provided for heat transfer, and the first component and the second component are composed of the first component and the second component. Ri Do metal material different from each other,
The second component has a function related to the discharge of the drain liquid that has flowed into the drain main body provided in the equipment, and a part or all of the drain liquid is provided inside the drain main body and the drain main body is provided. decompressor said drain liquid upward from the drain body portion characterized that you have been made as a valve seat to prevent back flow by abutting the valve body to fly by the drain liquid accumulated in parts. The first component is arranged in the vicinity of the induction coil and has a function of generating heat by generating an eddy current generated by electromagnetic induction.
The second component is arranged in a place where ice bodies are likely to be generated inside the device, and also has a heat transfer function of further transferring the heat transferred from the first component to the surroundings. The defrosting device according to claim 1. The first component is made of stainless steel.
The defrosting device according to claim 2, wherein the second component is made of aluminum or an aluminum alloy. The invention according to any one of claims 1 to 3, wherein the first constituent member and the second constituent member are provided so as to be joined to each other or in contact with each other. Decompression device. The defrosting device according to any one of claims 1 to 4, wherein the second component is provided in the vicinity of a member movably provided inside the device. Further, it is made of aluminum or an aluminum alloy and is provided inside the first component member so as to be in contact with the inner peripheral surface of the first component member, and when the valve body floats, the valve is provided. The defrosting device according to claim 1 , further comprising a float guide member that guides the body so as to correctly contact the valve seat. The defrosting device according to any one of claims 1 to 5, wherein the second component is in contact with a valve body or a valve seat provided inside the device. ..

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