WO2011086910A1 - Dispositif de chauffage - Google Patents

Dispositif de chauffage Download PDF

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Publication number
WO2011086910A1
WO2011086910A1 PCT/JP2011/000110 JP2011000110W WO2011086910A1 WO 2011086910 A1 WO2011086910 A1 WO 2011086910A1 JP 2011000110 W JP2011000110 W JP 2011000110W WO 2011086910 A1 WO2011086910 A1 WO 2011086910A1
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WO
WIPO (PCT)
Prior art keywords
heating
heat transfer
heat
flow pipe
heating device
Prior art date
Application number
PCT/JP2011/000110
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English (en)
Japanese (ja)
Inventor
和昌 高田
政人 坪井
公 塚本
Original Assignee
サンデン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by サンデン株式会社 filed Critical サンデン株式会社
Publication of WO2011086910A1 publication Critical patent/WO2011086910A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/16—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled
    • F24H1/162—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled using electrical energy supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H2001/2268—Constructional features
    • B60H2001/2296—Constructional features integration into fluid/air heat exchangers

Definitions

  • the present invention relates to a heating device in which a heat medium of a heating element circulates.
  • a flat pipe is formed by embedding a flow pipe through which hot water as a heat medium flows and a heating wire heater (heating element) arranged in parallel with the flow pipe in a heat transfer metal.
  • a heat transfer body is formed, a plurality of the heat transfer bodies are integrated, and circulation pipes are connected in series to constitute a heat source device (see, for example, Patent Document 1).
  • a heating device using the heating wire heater as described above is mounted on the vehicle.
  • the above-mentioned conventional heating apparatus forms a heat transfer body by embedding a flow pipe and a heating wire heater in a heat transfer metal, and a plurality of the heat transfer bodies are integrated, and the flow pipes are connected in series. Therefore, there is a concern that the configuration of the heating device becomes complicated, the assembling property deteriorates, and the manufacturing cost increases.
  • the present invention has been made based on the above-described circumstances, and an object of the present invention is to provide a heating device that can reduce the manufacturing cost with a simple configuration and can improve the heat transfer efficiency and the reliability.
  • the heating device of the present invention includes a series of flow pipes through which a heat medium flows, a heating element that heats the flow pipes, and a transmission that is formed integrally with the flow pipes by burying the flow pipes.
  • the heat transfer body has an insertion hole for housing the heat generating body (claim 1). Further, a cylindrical body formed by winding the flow pipe is embedded in the heat transfer body (Claim 2), and the length of the cylindrical body in the winding direction is substantially the same as the insertion length of the heating element into the insertion hole ( (Claim 3), the insertion hole is located inside the cylinder (Claim 4).
  • the cylindrical body is formed by spirally winding a flow pipe (Claim 5), and the heat transfer body is a heat transfer block that is integrally formed by casting the flow pipe into metal and inserting it. The holes are formed when the heat transfer block is cast.
  • the heating element has a terminal portion that is energized to cause the heating element to generate heat at one end, and the second housing has an inlet portion for the heat medium on the terminal portion side.
  • a plurality of heating elements are accommodated in the first housing (Claim 8), and the heating element has a terminal portion that is energized to heat the heating element at one end, and each of the plurality of heating elements or Control means for controlling energization to a plurality of terminals is provided. More specifically, the heating element is a heating wire heater (Claim 10), the heat medium heats the refrigerant circulating in the refrigeration circuit (Claim 11), and the refrigeration circuit is provided in an air conditioner for a vehicle ( Claim 12).
  • the heating device is formed integrally with the flow tube by burying the flow tube, a series of flow tubes through which the heat medium flows, a heating element for heating the flow tube, and the flow tube.
  • the heat transfer body has an insertion hole for accommodating the heat generating body.
  • the heat transfer body is in contact with the flow pipe without any gap, the heat of the heating element can be efficiently transferred to the heat medium via the heat transfer body and the flow pipe. Can be increased.
  • embedded in the heat transfer body is a series of seamless flow pipes that eliminate the connection of the heat medium flow path in the heating device, thus reducing the risk of heat medium leakage in the heating device. This can increase the reliability of the heating device.
  • the heat of the heating element is more efficiently transferred to the heat medium via the heat transfer body and the flow pipe. Therefore, the heat transfer efficiency of the heating device can be further increased.
  • the length of the cylindrical body in the winding direction is substantially the same as the insertion length of the heating element into the insertion hole, so that the heat generated by the heating element is distributed in the longitudinal direction. Since heat can be efficiently transmitted to the tubular body made of tubes, and eventually the heat medium flowing through the tubular body, the heat transfer efficiency of the heating device can be further increased.
  • the insertion hole is provided inside the cylindrical body, so that the heat generated by the heat generating element in the radial direction is formed by the cylindrical body constituted by the flow pipe, and thus the heat medium flowing through the cylindrical body. Therefore, the heat transfer efficiency of the heating device can be increased. Moreover, since the insertion hole is provided in the cylinder, the heat of the heating element is absorbed by the heat medium flowing through the flow pipe and then transferred to the heat transfer body outside the cylinder. It becomes difficult for heat to be transmitted to the outer surface of the body. Therefore, heat loss in the heat transfer body can be reduced, and the heat transfer efficiency of the heating device can be further increased. Furthermore, since the outer surface of the heat transfer body does not reach a high temperature, the risk of contact with the heat transfer body can be reduced, and the reliability of the heating device can also be increased.
  • the cylindrical body is formed by spirally winding the flow pipe, so that the cylindrical body is appropriately wound to form a simple cylindrical body, Since the substantial length of the flow path of the heat medium on the premise that the heat transfer body has the same volume can be increased, the heat transfer time and heat transfer area of the heat medium to the heating element can be effectively increased. Therefore, the heat transfer efficiency of the heating device can be further increased.
  • the heat transfer body is a heat transfer block that is integrally formed by casting a flow pipe into a metal, and the insertion hole is formed when the heat transfer block is cast. Since the insertion hole can be easily provided simultaneously with the formation of the heat block, the manufacturing cost of the heating device can be further reduced.
  • the heating element has a terminal portion that is energized to generate heat in the heating element at one end, and the second housing has an inlet portion of the heat medium on the terminal portion side.
  • the terminal portion can be cooled with a heat medium having a relatively low temperature before being heated by heat transfer from the heating element. Accordingly, since the heat resistance temperature of the terminal portion is generally lower than that of the heating element body, it is possible to prevent the terminal portion from reaching a temperature that the heating element emits, so that the durability of the heating element and the reliability of the heating device can be reduced. Can increase the sex.
  • the heating element has a terminal portion that is energized to heat the heating element at one end, and controls energization to each of the plurality of heating elements or a plurality of terminal portions. Control means are provided. Thereby, since the energization circuit of a heating apparatus can be made into multiple circuits and it can energize individually, even if one energization line is disconnected, a heating apparatus can be operated by another energization circuit.
  • the inrush current to the heating device can be reduced by energizing the plurality of terminal portions in stages when the heating device is started, an overload trip of the heating device can be prevented, thereby improving the reliability of the heating device. Can do.
  • the heating element is a heating wire heater, and the manufacturing cost of the heating device can be further reduced by using an inexpensive general-purpose heating wire heater. Since the heating wire heater is generally widely spread and has high reliability, the reliability of the heating device can be further improved.
  • the heat medium is suitable for heating the refrigerant circulating in the refrigeration circuit
  • the refrigeration circuit is used for a vehicle. It is provided in the air conditioner. In these cases, it is preferable that the refrigeration circuit and the air conditioner, and hence the assembly of the vehicle can be improved, and the manufacturing cost can be reduced.
  • FIG. 2 is a side view illustrating a state where a heating wire heater of the heat transfer block of FIG. 1 is not accommodated.
  • FIG. 2 is a front view illustrating a state where a heating wire heater of the heat transfer block of FIG. 1 is not accommodated.
  • a heating device 1 includes a circulation pipe 2 through which a heat medium circulates, four heating wire heaters (heating elements) 4 that heat the circulation pipe 2, and a circulation pipe embedded in the circulation pipe 2. 2 and a heat transfer block (heat transfer body) 6 formed integrally.
  • the heating device 1 is mounted on, for example, a vehicle such as a hybrid vehicle or an electric vehicle. Water as a heat medium is circulated through the distribution pipe 2 to be heated by a heating wire heater 4. It is used as a heat source for heating the refrigerant circulating in the refrigeration circuit of the air conditioner.
  • the heating wire heater 4 includes a coiled heating wire 12 such as a nichrome wire inserted into a bottomed cylindrical metal pipe 10, and a high electric power in the metal pipe 10 having a length L. It is formed by pressure-filling a heat-resistant insulating material 14 having insulating properties and thermal conductivity and enclosing the heating wire 12.
  • the heat resistant insulating material 14 is, for example, magnesium oxide, and the main body of the heating wire heater 4 including the heat resistant insulating material 14 and the metal pipe 10 has a heat resistant temperature of about 1100 ° C.
  • the terminal part 16 is provided in the opening part of the metal pipe 10, and the terminal part 16 is connected to the heating wire 12 and has a terminal 18 protruding from the heating wire heater 4.
  • Each terminal 18 of each heating wire heater 4 is electrically connected to an external power supply device 20 and constitutes an energization circuit 22 for energizing the heating wire 12.
  • the terminal portion 16 is formed by casting and molding silicon, glass or the like in the opening of the metal pipe 10, and the terminal portion 16 has a heat resistant temperature of about 200 ° C. to 300 ° C. Instead of the terminal 18, a lead wire connected to the heating wire 12 may be drawn out from the terminal portion 16.
  • each heating wire heater 4 is provided with a thermal fuse (not shown) to protect each energizing circuit 22 from a large current exceeding the rating flowing through the heating wire 12, Prevents ignition.
  • temperature sensors 24 such as thermistors for detecting the temperatures in the flow pipe 2 and the heat transfer block 6 are drawn out from a drawer pipe 8 described later.
  • Each temperature sensor 24 is electrically connected to an external electronic control unit (ECU) 26 that comprehensively controls the vehicle, and the power supply device 20 is also electrically connected to the ECU 26.
  • the ECU 26 is individually connected to each of the four heating wire heaters 4 or a plurality of terminals 16 according to the temperature in each metal pipe 10 detected by each temperature sensor 24 via the power supply device 20. Energization control for energizing is performed (control means).
  • the heating device 1 By performing this energization control, it becomes possible to energize the heating device 1 by making a plurality of energization circuits 22 individually. For example, even if one energization line 22 is disconnected, the other energization circuit 22 is energized and heated. The device 1 can be activated. Further, by energizing each terminal portion 16 stepwise when the heating device 1 is started, it is possible to reduce the inrush current to the heating device 1 and prevent the overload trip of the heating device 1.
  • the flow pipe 2 is, for example, a copper pipe having high heat resistance and heat conductivity, and has a heat medium inlet portion 28 and an outlet portion 30 at both ends of the flow pipe 2.
  • the cylindrical body 32 which has the length L1 of the winding direction is comprised by giving the process which winds a series of seamless copper pipes spirally in the presence of some gaps.
  • a space 34 in which the four heating wire heaters 4 can be arranged up and down is secured inside the cylindrical body 32, and the above-described drawer pipe 8 is provided in the space 34 in parallel with the winding direction of the flow pipe 2. .
  • the drawer pipes 8 are, for example, 2 at the position where the first and second heating wire heaters 2 are arranged from the top and at the position where the third and fourth heating wire heaters 2 are arranged from the top, respectively.
  • Each is provided in parallel, joined to the space 34 side of the cylindrical body 32 by welding or the like, and the temperature sensor 24 is inserted into each drawer tube 8 as described above.
  • the heat transfer block 6 is formed by casting a metal such as aluminum having high heat resistance and heat conductivity, and the cylindrical body 32 is illustrated when the metal is cast.
  • the heat transfer block 6 and the flow pipe 2 are integrally formed as one unit by being embedded in a mold that does not.
  • the inlet portion 28, the outlet portion 30, and the end portion 8 a on the inlet portion 28 side of the drawing pipe 8 are not embedded in the heat transfer block 6, but the portions other than the inlet portion 28 and the outlet portion 30 of the cylindrical body 32.
  • the end portion 8b of the drawer tube 8 on the outlet portion 30 side has a size and a shape embedded in the heat transfer block 6.
  • four insertion holes 36 for accommodating the respective heating wire heaters 4 are opened up and down at substantially equal intervals in the side surface 6a.
  • the insertion hole 36 has a depth L2 that does not penetrate the heat transfer block 6, and this length L2 is the length L1 of the metal pipe 10 of the heating wire heater 4 and the length L1 of the cylindrical body 32 in the winding direction.
  • the length L1 of the cylindrical body 32 in the winding direction is substantially the same as the insertion length of the heating wire heater 4 into the insertion hole 36.
  • Each insertion hole 36 is arranged at the position of the space 34 in FIG. 4, that is, each insertion hole 36 is provided inside the cylindrical body 32. Further, each insertion hole 36 is formed at the same time when the heat transfer block 6 is cast by previously providing a portion for forming each insertion hole 36 in a mold for casting the heat transfer block 6.
  • each insertion hole 36 has a hole diameter that is approximately the same as or slightly larger than the outer diameter of the metal pipe 10, so that each metal pipe 10 is inserted into the insertion hole 36 when inserted into the insertion hole 36.
  • the heat generated by the heating wire heater 4 is smoothly transmitted to the heat transfer block 6 by being abutted appropriately.
  • the heat medium is the heating wire heater 4. Flows through the flow pipe 2 while spirally turning from the inlet 28 to the outlet 30 in the longitudinal direction of the insertion hole 36.
  • the heating apparatus 1 is an integrated heating apparatus unitized with a simple configuration in which the insertion hole 36 for housing the heating wire heater 4 is provided in the heat transfer block 6 in which the flow pipe 2 is embedded. 1 can be formed, the configuration of the heating device 1 can be greatly simplified, and the assembly of the heating device 1 can be improved, and the manufacturing cost can be reduced.
  • the heat transfer block 6 is in contact with the flow pipe 2 without a gap, the heat of the heating wire heater 4 can be efficiently transferred to the heat medium via the heat transfer block 6 and the flow pipe 2.
  • the heat transfer efficiency of the apparatus 1 can be increased.
  • a series of seamless flow pipes 2 are embedded in the heat transfer block 6, and the connection of the heat medium flow path in the heating device 1 can be eliminated. The danger can be reduced and the reliability of the heating device 1 can be increased.
  • the cylindrical body 32 formed by winding the flow pipe 2 is embedded in the heat transfer block 6, the exposed portion of the flow pipe 2 from the heat transfer block 6 can be eliminated. Heat can be more efficiently transferred to the heat medium via the heat transfer block 6 and the flow pipe 2, and the heat transfer efficiency of the heating device 1 can be further increased. Further, the length L1 in the winding direction of the cylindrical body 32 is substantially the same as the insertion length of the heating wire heater 4 into the insertion hole 36, so that the heat generated by the heating wire heater 4 in the longitudinal direction is distributed through the flow tube. Therefore, the heat transfer efficiency of the heating device 1 can be further increased.
  • the insertion hole 36 is provided in the space 34 inside the cylindrical body 32, so that the heat generated by the heating wire heater 4 in the radial direction is efficiently transferred to the cylindrical body 32, and eventually to the heat medium flowing through the cylindrical body 32. Since it can transmit, the heat-transfer efficiency of the heating apparatus 1 can further be improved. Moreover, since the insertion hole 36 is provided in the space 34, the heat of the heating wire heater 4 is absorbed by the heat medium flowing through the flow pipe 2 and then transferred to the portion of the heat transfer block 6 outside the cylindrical body 32. Since it is heated, it becomes difficult to transmit heat to the outer surface of the heat transfer block 6. Therefore, the heat loss in the heat transfer block 6 can be reduced, and the heat transfer efficiency of the heating device 1 can be further increased. Furthermore, since the outer surface of the heat transfer block 6 does not reach a high temperature, the risk of contact with the heat transfer block 6 can be reduced, and the reliability of the heating device 1 can be increased.
  • the cylindrical body 32 is formed by spirally winding the flow pipe 2, so that the heat transfer block 6 is formed as compared with a case where the flow pipe 2 is appropriately wound to form a simple cylindrical body. Since the substantial length of the flow path of the heat medium on the premise of the same volume can be increased, the heat transfer time and heat transfer area of the heat medium to the heating wire heater 4 can be effectively increased, The heat transfer efficiency of the heating device 1 can be further increased.
  • the heat transfer block 6 is integrally formed by casting the flow pipe 2 in a metal and embedded, and the insertion hole 36 is formed when the heat transfer block 6 is cast, so that the insertion hole is formed simultaneously with the formation of the heat transfer block 6. Since 36 can be provided easily, the manufacturing cost of the heating apparatus 1 can be further reduced. Furthermore, by providing the heat medium inlet section 28 on the terminal section 16 side, the terminal section 16 can be cooled with a relatively low temperature heat medium before being heated by heat transfer from the heating wire heater 4. . Therefore, as described above, the terminal portion 16 has a lower heat-resistant temperature than the heating wire heater 4 main body, which is the part of the metal pipe 10, and therefore prevents the terminal portion 16 from reaching a high temperature generated by the heating wire 12. Therefore, the durability of the heating wire heater 4 and thus the reliability of the heating device 1 can be improved.
  • the heat transfer efficiency of the heating device 1 can be further increased. Further, by performing energization control for controlling whether or not the plurality of heating wire heaters 4 are energized, the energization circuit 22 of the heating device 1 can be made into a plurality of circuits and individually energized, so that one energization line 22 is disconnected. Even if it does, the heating apparatus 1 can be operated with the other electricity supply circuit 22. FIG. Moreover, since the inrush current to the heating device 1 can be reduced by energizing the plurality of terminal portions 16 in stages when the heating device 1 is started, an overload trip of the heating device 1 can be prevented. Reliability can be further increased.
  • the present invention is not limited to the above-described embodiments, and various modifications can be made.
  • the heat transfer block 6 and the insertion hole 36 are simultaneously formed by casting.
  • the method of forming the heat transfer block 6 is not limited to casting, and the insertion hole 36 is not It may be formed by cutting or the like after the heat block 6 is formed.
  • the heat transfer block 6 has a rectangular parallelepiped outer shape, but is not limited thereto, for example, if the heat transfer block 6 is formed by reducing the thickness according to the shape of the cylindrical body, The heating device 1 is preferably reduced in size and weight. Furthermore, in the heating apparatus 1 of the present embodiment, the cylindrical body 32 is formed by spirally winding the flow pipe 2, but the cylindrical body 32 having the space 34 is not limited to this winding shape.
  • heating wire heaters 4 are accommodated in the heat transfer block 6, but not limited to four, the above-described energization control for the heating wire heater 4 is possible. is there.
  • a heating element other than the heating wire heater 4 can be applied to the heating device 1 of the present embodiment, or a fluid other than water may be used as the heating medium.
  • the manufacturing cost of the heating device 1 can be reduced, and the general-purpose heating wire heater 4 is generally widespread and highly reliable. The reliability can be improved, which is preferable.
  • the heating device 1 of the present embodiment is provided in the refrigeration circuit, and the refrigeration circuit and the air conditioner and thus the manufacturing cost of the vehicle are reduced by incorporating the refrigeration circuit into the vehicle air conditioner of the hybrid vehicle or electric vehicle. Is preferable.
  • the heating device 1 can be used not only as a heat source for the refrigerant circulating in the refrigeration circuit of the vehicle air conditioner but also as a heat source for other purposes.
  • Heating device 1 Heating device 2 Distribution pipe 4 Heating wire heater (heating element) 6 Heat transfer block (heat transfer body) 16 Terminal section 26 ECU (control means) 28 Entrance 32 Tube 36 Insertion hole

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)

Abstract

L'invention porte sur un dispositif de chauffage tel que, dans une configuration simple, les coûts de fabrication peuvent être réduits et l'efficacité et la fiabilité du transfert de chaleur peuvent être augmentées. Le dispositif de chauffage (1) est équipé d'un tuyau d'écoulement continu (2), d'éléments de chauffage (4) qui chauffent le tuyau d'écoulement (2) et d'un corps de transfert de chaleur (6) formé e une seule pièce avec le tuyau d'écoulement (2) de telle sorte que ce dernier est placé à l'intérieur dudit corps de transfert de chaleur (6). Le corps de transfert de chaleur (6) possède des trous d'insertion (36) destinés à contenir les éléments de chauffage (4).
PCT/JP2011/000110 2010-01-13 2011-01-13 Dispositif de chauffage WO2011086910A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010004860A JP2011144976A (ja) 2010-01-13 2010-01-13 加熱装置
JP2010-004860 2010-01-13

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WO2011086910A1 true WO2011086910A1 (fr) 2011-07-21

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ITVI20120234A1 (it) * 2012-09-24 2014-03-25 Ht S P A Procedimento per la realizzazione di elementi riscaldanti che impiegano resistori elettrici
CN108027167A (zh) * 2015-09-09 2018-05-11 康奈可关精株式会社 流体加热装置及其制造方法
WO2018172387A1 (fr) * 2017-03-23 2018-09-27 Webasto SE Appareil de chauffage électrique
WO2019002492A1 (fr) * 2017-06-30 2019-01-03 Zoneox Medical Aps Appareil et procédé permettant d'influencer un paramètre d'un fluide

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JP6029850B2 (ja) * 2012-05-10 2016-11-24 サンデンホールディングス株式会社 加熱装置
US9638438B2 (en) * 2013-07-09 2017-05-02 Cast Aluminum Solutions, LLC Circulation heater
FR3012872B1 (fr) * 2013-11-07 2015-11-13 Valeo Systemes Thermiques Dispositif electrique de conditionnement thermique de fluide pour vehicule automobile, et appareil de chauffage et/ou de climatisation associe

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JPH0382Y2 (fr) * 1986-01-31 1991-01-07
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