JP2019531451A - Oil heater - Google Patents

Abstract

An oil heater (100) including two oil pipes (1) and a plurality of heat dissipating fins (2). The two oil pipes (1) are arranged at intervals in the vertical direction, and each heat dissipating fin ( Both ends of 2) are provided in two oil pipes (1), respectively, oil passages communicating with the two oil pipes (1) are provided in each radiating fin (2), and at least each radiating fin (2) is provided. An air chamber (21) installed at a distance from the oil passage is provided at one edge, and a top exhaust port (210) is provided in each air chamber (21), parallel to the oil pipe (1). In the longitudinal direction, an air inlet (211) is provided in each of the opposing side walls of the air chamber (21), and an air guide plate (212) for introducing air into the air chamber (21) is provided in each air inlet (211). Eclipsed.

Description

  The present invention relates to the technical field of home appliances, and more particularly to an oil heater.

  The operating principle of the current oil heater is to heat the heat transfer oil in the metal cavity using an electric heating rod, and then heat the hot heat transfer oil to the ambient air through the metal cavity and the radiation fins in the cavity. To serve the purpose of warming the user. Generally, the higher the temperature of the metal cavities and the radiating fins, the more advantageous is the heat radiation to the ambient air.

  In the prior art, one thin air chamber is usually arranged at the edge of the heat dissipation fin of the oil heater, and a through hole is provided at a certain distance on the air chamber, and the air passes through the through hole. And enter the air chamber. Since the heat transfer coefficient of air is much lower than that of metal (usually stainless steel), in the prior art, the oil heater serves the purpose of blocking some heat at the edge of the radiating fin. However, since the oil heater simply relies on the air insulation design in the air chamber, the edges of the heat dissipating fins cannot be sufficiently cooled, and there is a risk that the user may burn during use.

  The object of the present invention is to solve one technical problem in the prior art to some extent. Therefore, the present invention increases the heat radiation area of the edge of the heat radiation fin, increases the flow strength of the air flowing through the inner surface of the heat radiation fin and the air flowing through the outer surface, lowers the temperature of the edge of the heat radiation fin, and An oil heater is provided in which the risk of burns during use of the oil heater can be avoided.

  An oil heater according to an embodiment of the present invention includes two oil pipes and a plurality of heat dissipating fins, the two oil pipes being spaced apart in the vertical direction, and both ends of the heat dissipating fins are the two Provided in each of the oil pipes, an oil passage that communicates with the two oil pipes is provided in each of the radiating fins, and is installed at an edge of at least one side of each of the radiating fins with a gap from the oil passage. Each air chamber is provided with a top exhaust port, and in the longitudinal direction parallel to the oil pipe, an air intake port is provided in each of the opposing side walls of the air chamber, and An air guide plate is provided for introducing air into the air chamber.

  In the oil heater according to the embodiment of the present invention, an air chamber having an air inlet and a top exhaust port is installed at the edge of the heat radiating fin, and an air guide plate is installed at the air inlet. The heat radiation area of the heat sink increases, the flow strength of the air flowing on the inner surface of the heat sink and the air flowing on the outer surface increases, the temperature of the edge of the heat sink decreases, the heat dissipation capability of the heat sink increases, and the user uses the oil heater The risk of burns inside is avoided.

  Preferably, the oil heater further includes a bimetal temperature control element for detecting a temperature of the heat transfer oil, and the bimetal temperature control element is used when the temperature of the heat transfer oil reaches a temperature set by a user. Turn off the power.

  According to some embodiments of the present invention, a plurality of the air inlets arranged at intervals in the vertical direction are provided on each of the opposing side walls of the air chamber.

  Optionally, the free end of each air guide plate extends into the air chamber.

  Optionally, the free end of each air guide plate is located outside the air chamber.

  Optionally, a free end of each air guide plate on one side wall of each air chamber extends into the air chamber, and a free end of each air guide plate on the other side wall of each air chamber Located outside the air chamber.

  Specifically, the extension length of the portion of the air guide plate located outside the air chamber is 1/2 or less of the distance between two adjacent air chambers.

  Further, the plurality of air guide plates located on the same side wall are installed in parallel.

  Further, the range of the included angle between each air guide plate and the vertical plane is 5 ° to 15 °.

  Optionally, the plurality of air inlets in the opposing side walls of each air chamber are installed in a one-to-one relationship in the longitudinal direction parallel to the oil pipe.

  Optionally, the air inlets on the opposite side walls of the air chambers are alternately installed in the vertical direction.

  According to some embodiments of the present invention, the air chambers are provided at both edges of the heat radiating fins.

It is a front view of the oil heater which concerns on the Example of this invention. It is a schematic sectional drawing of the structure of the radiation fin which concerns on the Example of this invention. It is a schematic sectional drawing of the structure of the radiation fin which concerns on the other Example of this invention. FIG. 2 is a schematic cross-sectional view taken along line AA of the embodiment of the air chamber of the oil heater shown in FIG. 1. It is the sectional view on the AA line of the other Example of the air chamber of the oil heater shown in FIG. FIG. 3 is a partially enlarged view of a portion A in FIG. 2. FIG. 4 is a partially enlarged view of a portion B in FIG. 3. FIG. 5 is a partially enlarged view of a portion C in FIG. 4. FIG. 6 is a partially enlarged view of a portion D in FIG. 5. It is a comparison figure of the temperature distribution graph of the edge of the radiation fin which concerns on the Example of this invention, and the radiation fin in a prior art.

  In the following, embodiments of the present application will be described in detail, and examples of the embodiments will be shown in the drawings. The examples described below with reference to the drawings are illustrative and are only for the interpretation of the present application and should not be understood as limiting the present application.

  In the description of the present invention, the azimuth or positional relationship indicated by the terms “length”, “upper”, “lower”, “vertical”, “horizontal”, “top”, “inner”, “outer” is , Based on the orientation or positional relationship shown in the drawings, for ease of explanation of the embodiments of the present invention and for the sake of brevity, and the designated device or component is in a specific orientation. It should not be understood as a limitation to the present invention, as it is not intended to indicate or imply when constructed and operated in a particular orientation.

  Also, the terms “first” and “second” are used only to describe the purpose and indicate or imply relative importance or imply the number of technical features indicated. Do not understand if you give instructions. Thus, features defined by “first” and “second” explicitly or imply that one or more features are included. In the description of the present invention, unless there is a clear and specific limitation, “plurality” means at least two, for example, two, three, and the like.

  In the description of the present invention, the meanings of the terms “attaching”, “connecting to each other”, “connecting”, and “fixing” should be broadly understood unless explicitly defined and limited. For example, a fixed connection, a detachable connection, or an integral connection is possible. Mechanical connections, electrical connections, or communication with each other is possible. It is possible to connect directly, indirectly through an intermediate medium, or the inside of the two components can communicate. A person skilled in the art can understand the specific meaning of the above terms in the present invention according to specific cases.

  Hereinafter, an oil heater 100 according to an embodiment of the present invention will be described with reference to FIGS. The arrows in FIGS. 2 to 5 indicate the flow direction of cold air in the vertical direction.

  As shown in FIGS. 1 to 9, the oil heater 100 according to the embodiment of the present invention includes two oil pipes 1 and a plurality of heat radiation fins 2.

  The two oil pipes 1 are arranged at intervals in the vertical direction. Both ends of each radiating fin 2 are provided in two oil pipes 1, and oil passages (not shown) communicating with the two oil pipes 1 are provided in each radiating fin 2, that is, two oil pipes 1. Are communicated by the oil passages 20 of the plurality of radiating fins 2 to form an oil circulation circuit. At least one side edge of each radiating fin 2 is provided with an air chamber 21 installed at a distance from the oil passage, and a top exhaust port 210 is provided in each air chamber 21, and a longitudinal direction parallel to the oil pipe 1. In the direction, an air inlet 211 is provided in each of the opposing side walls of the air chamber 21, and an air guide plate 212 that introduces air into the air chamber 21 is provided in each air inlet 211.

  Oil heater 100 further includes a heating rod that is provided in oil pipe 1 located below and heats heat transfer oil in oil pipe 1. Preferably, a bimetal temperature control element is attached to the oil heater 100, and when the temperature of the heat transfer oil reaches a temperature set by the user, the temperature control element automatically turns off the power. Thereby, the safety and reliability of the oil heater 100 are improved.

  After the power supply of the oil heater 100 is turned on, the heat transfer oil in the oil pipe 1 located below is heated by the heating rod, and then the high-temperature heat transfer oil is passed through the oil passages in the plurality of radiating fins 2. The oil heater 100 rises into the oil pipe 1 positioned above through the oil passage 100 to form an oil passage circulation, and the oil heater 100 dissipates heat of the heat transfer oil through the two oil pipes 1 and the peripheral wall surfaces of the radiating fins 2. Then, the heat transfer oil heated in the surrounding space environment and cooled by the air descends into the oil pipe 1 located below and is heated again by the heating rod, and a new circulation starts.

  Cold air outside the oil heater 100 flows into the air chamber 21 through the air guide plate 212 in the air inlet 211 of the air chamber 21 and flows out through the top exhaust port 210. That is, an air flow path is formed in the air chamber 21 at the edge of the radiating fin 2, and when the air flows, the edge of the radiating fin 2 is radiated to lower the temperature of the edge of the radiating fin 2.

  In addition, since the inlet port 211 is provided in each of the opposing side wall of the air chamber 21, the air chamber 21 located on the same side of the two adjacent radiating fins 2 is not in contact with the two adjacent radiating fins 2. An air flow path is formed between the two. Thereby, the cold air in the horizontal direction outside the oil heater 100 enters the high-temperature region of the oil passage passage portion between the adjacent heat dissipating fins 2 of the oil heater 100 through the air flow path, and the adjacent heat dissipating fins 2 It is advantageous in that heat is exchanged by circulating between them. Thereby, the contact between the cold air in the horizontal direction and the edge of the radiation fin 2 is increased, the flow strength of the air flowing on the outer surface of the radiation fin 2 and the heat radiation effect of the edge of the radiation fin 2 are improved, and the edge of the radiation fin 2 is improved. The temperature is reduced and the risk of burns while the oil heater 100 is being used by the user is avoided.

  In the description of the present invention, the “high temperature region” is not a specific temperature value, but the temperature of the region where the oil passage is provided in the radiating fin 2 is the region where the air chamber 21 is provided in the radiating fin 2. It means only higher than the temperature. In the oil heater 100 according to the embodiment of the present invention, the air chamber 21 is installed at the edge of the radiating fin 2, so that the edge of the radiating fin 2 of the oil heater 100 according to the embodiment of the present invention is obtained by the oil heater in the prior art. Therefore, the heat radiation area at the edge of the radiation fin 2 can be increased, which is advantageous for radiating the edge of the radiation fin 2 and lowering the temperature of the edge of the radiation fin 2.

  As shown in FIG. 10, the inventors of the present invention have reduced the temperature of the edge of the radiating fin 2 by installing the intake port 211 with the air guide plate 212 increased in the oil heater 100 of the present invention, as shown in FIG. 10. We found it advantageous. Compared with the oil heater in the prior art, the temperature of the edge of the heat dissipating fin 2 of the oil heater 100 of the present invention falls within the safety requirement range from the temperature exceeding the original standard, and the range of the temperature drop reaches 20% or more. The total heat radiation power of the heat radiation fin 2 is slightly increased by 1%.

  In the oil heater 100 according to the embodiment of the present invention, the air chamber 21 having the intake port 211 and the top exhaust port 210 is installed at the edge of the radiation fin 2, and the air guide plate 212 is installed in the intake port 211. As a result, the heat radiation area of the edge of the heat radiation fin 2 is increased, the flow strength of the air flowing through the inner surface of the heat radiation fin 2 and the air flowing through the outer surface is increased, the temperature of the edge of the heat radiation fin 2 is lowered, and the heat radiation of the heat radiation fin 2 is reduced. The ability is enhanced and the risk of burns while the oil heater 100 is being used by the user is avoided.

  According to some embodiments of the present invention, each of the opposing side walls of the air chamber 21 is provided with a plurality of inlets 211 that are spaced apart in the vertical direction. Thereby, it is understood that the plurality of intake ports 211 are arranged at intervals in the vertical direction, that the air guide plates 212 at the plurality of intake ports 211 are arranged at intervals in the vertical direction. . Therefore, a louvered intake port 211 is formed on the same side wall of the air chamber 21. In the vertical direction, the cold air outside the oil heater 100 enters the air chamber 21 through the plurality of air inlets 211 by the action of the air guide plate 212, so that the cold air outside the air chamber 21 It is possible to improve the flow rate of the air flowing in, increase the flow strength of the air flowing through the inner surface of the radiating fin 2, and improve the temperature decrease rate of the edge of the radiating fin 2. On the other hand, the plurality of air inlets 211 form a louver structure and have a function of disturbing the flow. Air can generate turbulent flow at the air inlets 211 and destroy the air boundary layer in the air inlets 211. The heat exchange efficiency of air convection in the vicinity of the port 211 is improved, the heat dissipating capability of the heat dissipating fins 2 is improved, and at the same time, it is advantageous for cooling the edges of the heat dissipating fins 2. Of course, since the air guide plate 212 has a constant inclination in the vertical direction, the air guide plate 212 has a function of guiding a certain amount of cold air in the horizontal direction. Here, the horizontal direction refers to a direction perpendicular to the paper surface in FIGS.

  As shown in FIGS. 2 and 6, according to some embodiments of the present invention, the free end of each air guide plate 212 extends into the air chamber 21. As a result, the air guide plate 212 not only functions to guide the cold air outside the air chamber 21, but also ensures that the user does not touch sharp corners and avoids the risk of damaging the user. Safety and reliability can be improved.

  As shown in FIGS. 3 and 7, according to some other embodiments of the present invention, the free end of each air guide plate 212 is located outside the air chamber 21. This further improves the effect of the air guide plate 212 to guide the outside cold air, secures an area where the cold air flows in the air chamber 21, and reduces the area where the cold air flows when flowing in the air chamber 21. Thus, it is possible to avoid receiving a large resistance, improve the strength of air flowing through the inner surface of the air chamber 21, and improve the temperature decrease rate of the edges of the radiating fins 2.

  As a result of experiments, the inventor has found that when the extension length of the portion of the air guide plate 212 located outside the air chamber 21 is equal to or less than half the distance between two adjacent air chambers 21, the air guide plate 212. Has found that the effect of disturbing the cold air in the air inlet 211 is most remarkable. Therefore, in some preferable examples of the present invention, the extension length of the portion of the air guide plate 212 located outside the air chamber 21 is set to be half or less of the distance between the two adjacent air chambers 21.

  As shown in FIGS. 5 and 9, according to some further embodiments of the present invention, the free end of each air guide plate 212 on one side wall of each air chamber 21 extends into the air chamber 21. The free end of each air guide plate 212 on the other side wall of each air chamber 21 is located outside the air chamber 21. As a result, the effect of the air guide plate 212 to guide outside air is further improved, the action of the air guide plate 212 disturbing the air at the intake port 211 is increased, and the heat exchange efficiency of the air convection in the vicinity of the intake port 211 is increased. It is possible to improve the heat dissipating ability of the heat dissipating fins 2 and at the same time, it is advantageous for cooling the edges of the heat dissipating fins 2.

  Further, the plurality of air guide plates 212 located on the same side wall are installed in parallel. Thereby, the included angle between the plurality of air guide plates 212 located on the same side wall and the vertical plane is the same. This simplifies the structure of the oil heater 100 and facilitates manufacture. At the same time, it can be ensured that the air guide plate 212 on the same side wall has the same effect of disturbing the air in the different air inlets 211, and the cold air flowing into the air chamber 21 through the different air inlets 211 can be ensured. The flow rate is the same, and it is possible to guarantee the strength of the flow of the air flowing through the inner surface of the air chamber 21 by avoiding a large resistance when cold air flows through the air chamber 21. It is advantageous for cooling the edge. Here, the vertical direction refers to the vertical direction of the oil heater 100.

  The inventor has found through experiments that when the included angle between each air guide plate 212 and the vertical plane is 5 ° to 15 °, the effect of the air guide plate 212 guiding outside cold air is most remarkable. It was. Therefore, in a preferred example of the present invention, the range of the included angle between each air guide plate 212 and the vertical plane is set to 5 ° to 15 °.

  Alternatively, as shown in FIGS. 2 and 3, the plurality of air inlets 211 on the opposing side walls of each air chamber 21 are installed in a one-to-one relationship in the longitudinal direction parallel to the oil pipe 1. This simplifies the structure of the oil heater 100 and facilitates manufacture.

  Alternatively, as shown in FIGS. 4 and 5, the intake ports 211 on the opposite side walls of the air chambers 21 are alternately arranged in the vertical direction. As a result, the louver-structured intake ports 211 on the opposite side walls of the air chambers 21 are arranged asymmetrically in the vertical direction, and the cold air flowing through the air chambers 21 has an area where air flows through the intake ports 211 having the louver structure. It is avoided to receive a large resistance due to the reduction, the flow strength of the air flowing through the inner surface of the radiating fin 2 is ensured, and it is advantageous for cooling the edges of the radiating fin 2. The extending direction of the free end of the air guide plate 212 on the opposite side wall of each air chamber 21 can be set according to the actual situation, for example, the air guide plate on the opposite side wall of each air chamber 21 The free ends of 212 may extend into the air chamber 21 all at once, or may be located outside the air chamber 21 all at once. Alternatively, the free end of the air guide plate 212 on one side wall of each air chamber 21 extends into the air chamber 21, and the free end of the air guide plate 212 on the other side wall is located outside the air chamber 21.

  According to some embodiments of the present invention, air chambers 21 are provided at both edges of each radiating fin 2. Thereby, the thermal radiation area of the thermal radiation fin 2 can be enlarged further, and the thermal radiation capability of the thermal radiation fin 2 can be strengthened further.

  Hereinafter, the structure of the oil heater 100 according to one specific embodiment of the present invention will be described in detail with reference to FIGS. 1, 5, and 9. However, the following description is merely an example, and after a person skilled in the art reads the following technical solution of the present invention, the technical solution or a part of the technical features may be combined, replaced, or modified. Obviously, this is possible and falls within the protection scope required by the present invention.

  As shown in FIGS. 1, 5, and 9, the oil heater 100 according to the embodiment of the present invention includes two oil pipes 1 and a plurality of radiating fins 2.

  Two oil pipes 1 are arranged at intervals in the vertical direction. Both ends of each radiating fin 2 are provided in two oil pipes 1, oil passages communicating with the two oil pipes 1 are provided in each radiating fin 2, and oil is provided on each of the edges on both sides of each radiating fin 2. An air chamber 21 installed at a distance from the passage is provided.

  Each air chamber 21 is provided with a top exhaust port 210, and in each of the opposing side walls of the air chamber 21 in the longitudinal direction parallel to the oil pipe 1, there are seven intake ports 211 arranged at intervals in the vertical direction. The intake ports 211 on the opposite side walls are alternately installed in the vertical direction.

  Each air inlet 211 is provided with an air guide plate 212, the angle between each air guide plate 212 and the vertical plane is 10 °, and the free end of each air guide plate 212 on one side wall of each air chamber 21 is air. The free end of each air guide plate 212 on the other side wall of each air chamber 21 is located outside the air chamber 21 and located outside the air chamber 21 of the air guide plate 212. The extension length of the portion to be performed is not more than half of the distance between the two adjacent air chambers 21.

  In the description of the present specification, an explanation referring to terms such as “one example”, “some examples”, “examples”, “specific examples”, or “some examples” The specific features, configurations, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present invention. In the present specification, exemplary explanations for the above terms do not necessarily indicate the same embodiments or examples. Also, the specific features, configurations, materials, or characteristics described may be combined appropriately in any one or more embodiments or examples. It should be noted that those skilled in the art can combine and combine the different embodiments or examples described herein and the features of the different embodiments or examples as long as they do not contradict each other.

  In addition, although the Example of this invention was shown and demonstrated above, the said Example is illustrated and should not be understood to limit this invention. A person skilled in the art can make changes, modifications, replacements, and modifications to the above-described embodiments within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Oil pipe 2 Radiation fin 21 Air chamber 100 Oil heater 210 Top exhaust port 211 Inlet port 212 Air guide plate

Claims (12)

An oil heater including two oil pipes and a plurality of heat radiation fins,
The two oil pipes are arranged at intervals in the vertical direction,
Both ends of each radiating fin are provided on the two oil pipes,
An oil passage that communicates with the two oil pipes is provided in each of the radiating fins,
An air chamber is provided at an edge of at least one side of each of the heat dissipating fins and spaced from the oil passage;
Each air chamber is provided with a top exhaust port,
In the longitudinal direction parallel to the oil pipe, an air inlet is provided in each of the opposing side walls of the air chamber,
An air guide plate for introducing air into the air chamber is provided at each of the intake ports.
An oil heater characterized by that. The oil heater further includes a bimetal temperature control element for detecting a temperature of the heat transfer oil, and the bimetal temperature control element turns on a power source when the temperature of the heat transfer oil reaches a temperature set by a user. The oil heater according to claim 1, wherein the oil heater is turned off. Each of the opposing side walls of the air chamber is provided with a plurality of the air inlets arranged at intervals in the vertical direction.
The oil heater according to claim 1, wherein the oil heater is provided. A free end of each air guide plate extends into the air chamber;
The oil heater according to claim 3. The free end of each air guide plate is located outside the air chamber;
The oil heater according to claim 3. A free end of each air guide plate on one side wall of each air chamber extends into the air chamber, and a free end of each air guide plate on the other side wall of each air chamber Located outside the
The oil heater according to claim 3. The extension length of the portion of the air guide plate located outside the air chamber is ½ or less of the distance between two adjacent air chambers.
The oil heater according to claim 4 or 5, wherein the oil heater is provided. A plurality of the air guide plates located on the same side wall are installed in parallel.
The oil heater according to claim 3. The range of the included angle between each air guide plate and the vertical plane is 5 ° to 15 °.
The oil heater according to claim 3. A plurality of air inlets on opposite side walls of each of the air chambers are installed one-on-one in the longitudinal direction parallel to the oil pipe,
The oil heater according to any one of claims 3 to 9, wherein The air inlets on the opposite side walls of the air chambers are alternately installed in the vertical direction.
The oil heater according to any one of claims 3 to 9, wherein The air chambers are provided at both edges of each of the heat dissipating fins,
The oil heater as described in any one of Claims 1-11 characterized by the above-mentioned.