KR20200031834A - Heater with heat oil circulation structure - Google Patents

Abstract

Disclosed is a hot air blower having a heat medium oil circulating structure. According to the present invention, the hot air blower having a heat medium oil circulating structure comprises: a lower accommodation unit; an upper accommodation unit including a first upper tank and a second upper tank; a plurality of heat exchange pipes; an air blower fan; an inflow air preheating pipe having one end connected to one side of the lower accommodation unit or the upper accommodation unit and the other end connected to the opposite side of the lower accommodation unit or the upper accommodation unit; and a circulation pump. According to the present invention, hot air can be generated even when the hot air blower is initially operated. Moreover, the heating time of the heat medium oil accommodated in the upper accommodation unit and the lower accommodation unit can be reduced as external air is preheated and supplied.

Description

Heater with heat transfer oil circulation structure {HEATER WITH HEAT OIL CIRCULATION STRUCTURE}

The present invention relates to a warm air fan having a heat medium oil circulation structure, and more particularly, to a warm air fan having a heat medium oil circulation structure capable of preheating external air introduced by circulating the heat medium oil.

In general, heating and warm air supply are essential in factories, barns, and plastic greenhouses to prevent livestock verbs in winter or to harvest vegetables / fruits in winter. Conventionally, the method of supplying warm air used for agriculture mainly uses a type such as a large combustor or a boiler that burns liquid (petroleum, etc.) and solid (coal, wood, etc.) fuels. Emissions adversely affected the growth environment of livestock or crops.

In recent years, many electric heaters have been applied. For example, the electric warm air fan is connected to a discharge pipe having an enlarged portion formed at a distal end of a blower composed of a motor and a blower fan. Inside the discharge pipe, an electric heater is inserted, and then a heating pipe filled with fruit oil is sealed. A radial heating fin is formed on the outer circumferential surface of the heating pipe. Accordingly, the electric heater heats the heating oil, and the heat is released from the heat dissipation fins of the heating pipe. At this time, the wind blown by the blower passes through the heat dissipation fins to heat the air.

However, in the case of the existing electric hot air fan, there was a problem in that the thermal efficiency of the hot air fan was lower than expected due to the limitation in increasing the contact area between the heating tube and the air, and the shape of the discharge pipe was fixed, so it was inefficient depending on the place where the electric hot air fan was installed. There was a problem driven by.

On the other hand, as a prior art, the Republic of Korea Patent Publication No. 10-2012-106527 (published date: 2012.09.26) discloses an electric heating unit and an electric heating device using the same. As shown in FIG. 1, the electric heating apparatus includes a heating unit 20 installed at a lower portion, an upper tank 30 positioned at a predetermined distance from the heating unit 20 and filled with a heating medium, and the heating unit A plurality of heat dissipation tubes 22 installed between the heating tank of the 20 and the upper tank 30 to communicate with the heating tank and the upper tank 30 and having radiating fins 22a protruding radially on the outer periphery And, it is composed of a fan 40 for blowing outside air toward the heat sink.

The electric heating device having such a structure is configured to operate the fan or pump after heating the heating medium having a high boiling point with an electric heater to sufficiently preheat the gravel, ceramic balls, or metal mass in the heating tank by the heating medium in the heating tank. Therefore, the temperature of the heating medium is maintained for a long time by sufficiently preheated pebbles, ceramic balls, or metal lumps, thereby improving thermal efficiency and achieving heating at a desired location with low power consumption. However, when the electric heating device was initially operated, since the latent heat material (gravel, ceramic ball, metal lump, etc.) was filled in the heating tank, it took a lot of time to increase the temperature of the heating medium in the heating tank even if the heating unit was operated. Therefore, there is a problem in that it is difficult to use warm air or hot water at a fast time desired by the user.

. Republic of Korea Patent No. 10-2012-106527 (Publication date: 2012.09.26)

An object of the present invention is to provide a means for preheating external air introduced by circulating a heat medium oil in a warm air fan.

In addition, the problems to be solved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned are clearly understood by those skilled in the art from the following description. Will be understandable.

The above object is, according to the present invention, each having an independent receiving space to accommodate the heat medium oil, are arranged to be spaced from each other, each of the end regions are communicated by the respective lower connecting portions, the supply to the receiving space Bar-shaped heating elements that are generated by the power supply is made of lower tanks respectively installed in the horizontal direction, the lower receiving portion is installed on the bottom of the housing; A first upper tank in communication with the lower tanks and ends with respective first upper connecting portions at the upper surface of each one end of each of the lower tanks, and at the upper surface of each opposite end of each of the lower tanks. An upper accommodating portion made of a second upper tank in communication with the other end of the lower tanks by the second upper connecting portions of which the heat medium oil circulates; A plurality of heat exchange tubes in which the heat medium oil is circulated and heat dissipating fins are formed on the outer circumferential surface of each of the first upper tank and the second upper tank facing each other so as to communicate with each end thereof; It is installed in the inlet hole formed on the upper portion of the housing, and the external air is forced into the interior of the housing, so that the external air is heated while being in contact with the heat exchange tubes, the upper receiving portion, and the lower receiving portion, and then heating the housing. Blowing fan to be discharged to the outlet formed on the side; One end is connected to one side of the lower receiving portion or the upper receiving portion, the other end is connected to the opposite side of the lower receiving portion or upper receiving portion, the intermediate heat exchange portion is installed so as to be exposed to the inlet hole, preheating the inlet air to circulate the heat medium oil tube; And a circulation pump installed in the inlet air preheating tube to forcibly circulate the circulating heat medium oil.

The lower tank is provided with a drain for selectively discharging heat medium oil, and the first upper tank or the second upper tank is provided with a safety valve for opening at a pressure set when the pressure inside the receiving space rises. In addition, an overflow valve may be provided to allow the heat medium oil to be discharged by expansion of the heat medium oil accommodated in the accommodation space.

In the lower tanks, temperature sensing sensors for independently sensing the heat medium oil temperature of each of the accommodation spaces are respectively provided, and the control unit provided in the housing includes heat medium oil of each accommodation space sensed by the temperature sensing sensors. Based on the temperature value, it can be configured to determine whether each of the heating elements has a failure, and to determine whether or not the circulation pump is operating.

The heat exchange part of the inlet air preheating tube may be formed in a circular spiral so that the flow resistance of the circulating heat medium oil is minimized.

The heat exchange part, the center may be formed lower than the edge so that the external air flowing in is minimized and the resistance is introduced to contact the heat exchange part and preheat.

The inlet air preheating pipe includes: a plurality of first circulation pipes, one end of which is in communication with the receiving space of each of the lower tanks; The first parallel connecting pipes connecting the other ends of the first circulation pipes in a pair of two, so that the heating medium oil heated by the heating elements in the lower tanks is uniformly supplied to the heat exchange unit, and the first A parallel connection portion consisting of a second parallel connection pipe connecting the intermediate portions of the parallel connection pipes to each other, and a supply connection pipe connecting the intermediate portion of the second parallel connection pipe and the inlet end of the heat exchange portion; And one end is connected to the outlet end of the heat exchange unit, the other end may be made of a second circulation pipe connected to the first upper tank, the second upper tank or the second upper connection.

In each receiving space of the lower tanks, pocket members having rapid heating spaces are formed inside and formed in a hollow shape with both ends opened to accommodate the heating element, and one end of the first circulation pipes is provided with the lower tanks. It is coupled to the pocket member to penetrate and communicate with the inside of each of the rapid heating spaces, and the heat medium oil rapidly heated to high temperature by the heating element inside the rapid heating spaces can be circulated directly into the inlet air preheating tube.

In the supply connection pipe, an auxiliary circulation pump for circulating the heat medium oil rapidly heated in the rapid heating space may be installed.

When the other end of the second circulation pipe is connected to the second upper connection portions, the second circulation pipe is provided with a channel corresponding to the second upper connection portions, respectively, and the circulation connection pipe communicating with the second upper connection portion The circulating connecting pipes may be coupled by penetrating through the second upper connecting portions so as to be inclined downward so that the heat medium oil cooled by circulating the heat exchange portion flows into each of the receiving space and the rapid heating space.

In the inlet hole, an external air temperature sensor for sensing the temperature of the external air passing through the heat exchange unit is installed, and the control unit provided in the housing sets the temperature of the external air sensed by the external air temperature sensor. If it is more than one temperature value, the operation of the circulation pump and the auxiliary circulation pump may be stopped, and if the temperature is below the set temperature value, the circulation pump and the auxiliary circulation pump may be operated.

According to the present invention, in the construction of a warm air fan, a small amount of heat medium oil is rapidly heated to a high temperature by a heating element, and the heat medium oil heated to a high temperature can be circulated to the inlet hole first to preheat the inflowing external air. Even during operation, warm air can be generated, and external air is preheated and supplied, thereby providing an effect of shortening the heating time of the heat medium oil accommodated in the upper receiving portion and the lower receiving portion.

1 is a front view showing a warm air device according to the prior art.
2 is a perspective view showing a warm air fan having a heat medium oil circulation structure according to the present invention.
3 is a front sectional view showing a warm air fan having a heat medium oil circulation structure shown in FIG. 2.
4 is a side cross-sectional view showing a warm air fan having a heat medium oil circulation structure shown in FIG. 2.
5 is a schematic configuration diagram showing an intake air preheating pipe shown in FIG. 2.
6 is a schematic block diagram for explaining the operation of a warm air fan having a heat medium oil circulation structure according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted to clarify the gist of the present invention.

In addition, the terminology used herein is for describing the embodiments and is not intended to limit the present invention. In this specification, the singular form also includes the plural form unless otherwise specified in the phrase. As used herein, 'comprises' and / or 'comprising' does not exclude the presence or addition of one or more other components.

Among the accompanying drawings, Figure 2 is a perspective view showing a warm air fan having a heat medium oil circulation structure according to the present invention, Figure 3 is a front sectional view showing a warm air fan having a heat medium oil circulation structure shown in Figure 2, Figure 4 It is a side cross-sectional view showing a warm air fan having a heat medium oil circulation structure shown in FIG. 2. And, Figure 5 is a schematic block diagram showing the inlet air preheating tube shown in Figure 2, Figure 6 is a schematic block diagram for explaining the operation of the hot air heater having a heat medium oil circulation structure according to the present invention.

2 to 6, the hot air fan 100 having a heat medium oil circulation structure according to the present invention, each of the lower tanks 210 communicating with each other in the horizontal direction and having independent heating elements 220 installed therein The first and second upper tanks 310 and 320 communicated in the vertical direction by the lower receiving portion 200 and the lower tanks 210 of the lower receiving portion 200 and the first and second upper connecting portions 312 and 322. ) The upper receiving portion 300 made of, and the first upper tank 310 and the second upper tank 320 are coupled so that each end communicates, the heat medium oil of the upper receiving portion 300 circulates, and the heat dissipation fins on the outer circumferential surface A plurality of heat exchange tubes 400 formed with 410, and installed in the inlet hole 510 formed on the top of the housing 500, forcibly introduces external air into the interior of the housing 500 to exchange external air. After being heated in contact with the pipes 400 and the upper receiving part 300 and the lower receiving part 300, the mold is formed on the side of the housing 500. Blowing fan 600 to be discharged to the discharge port 520, one end is connected to one of the lower receiving portion 200 or the upper receiving portion 300, the other end of the lower receiving portion 200 or the upper receiving portion It is connected to the opposite side of the (300), the intermediate heat exchange unit 720 is installed to be exposed to the inlet hole 510 is installed in the inlet air preheating pipe 700 and the inlet air preheating pipe 700 to circulate the heat medium oil It is configured to include a circulation pump 800 for forcibly circulating the circulating heat medium oil.

This will be described in more detail.

The housing 500 includes a lower receiving part 200 and an upper receiving part 300, a heat exchange tube 400, a blowing fan 600, an inflow air preheating tube 700 and a circulation pump 800, and an auxiliary circulation pump ( 900) and the like, and the control unit 550 is provided. The bottom surface, each side surface, and the upper surface have a closed structure, and at least one inlet hole 510 is formed on the upper surface and an outlet 520 is provided on one side. Is formed. The control unit 550 operates and controls the warm air fan 100 based on the measured values detected by the input unit, the temperature sensor 270, and the external air temperature sensor 570.

The above-described external air temperature sensor 570 is installed inside the inlet hole 510 to sense the temperature of the external air passing through the heat exchanger 720. In addition, when the temperature of the external air sensed by the external air temperature sensor 570 is greater than or equal to the set temperature value, the control unit 550 described above stops the operation of the circulation pump 800 and the auxiliary circulation pump 900, and sets them. If less than one temperature value, it is configured to operate the circulation pump 800 and the auxiliary circulation pump 900. To this end, the control unit 550 is provided with a memory for storing the set temperature, and also based on the information input by the user through the input unit, the heating element 220, the circulation pump 800, the auxiliary circulation pump 900 and the blowing fan ( 600) and the like.

The lower accommodating part 200 is configured to receive the heating means and heat the accommodated heat medium oil to increase the temperature to a high temperature, and is installed at the bottom of the housing 500. The lower receiving portion 200, each having an independent receiving space (S) to accommodate the heat medium oil, and are spaced apart from each other, and each of the end regions are communicated by the lower connecting portions 240 , In each receiving space (S), the rod-shaped heating elements 220 generated by the supplied power are respectively made of the lower tanks 210 installed in the horizontal direction. That is, each of the lower tanks 210 is arranged to be in a horizontal direction as illustrated in FIG. 2, so that each end region is coupled to communicate with each other by the respective lower connection parts 240.

In this way, the lower receiving portion 200 is composed of the lower tanks 210 of an independent heating structure, so that the replacement and maintenance of each heating element 220 can be easily and independently made, as well as each of the independent lower tank 210 ) Is to ensure that the heat medium oil is heated to high temperature in a short time in a narrow accommodation space (S). That is, since the receiving space S is formed independently of each other and the heating element 220 is installed and operated in the receiving space S, the heating temperature of the heat medium oil accommodated in the narrow receiving space S can be achieved at a faster time. .

A drain 250 for selectively discharging heat medium oil is provided in the lower tank 210.

Meanwhile, in the lower tanks 210, temperature sensing sensors 270 for independently sensing the heat medium oil temperature of each receiving space S are provided. Then, the control unit 550 provided in the housing 500, based on the temperature value of the heat medium oil in each accommodation space (S) sensed by each temperature sensor 270, determines the presence or absence of the failure of each heating element (220) , It is configured to determine whether the circulation pump 800 is operated. For example, when the temperature of the heat medium oil inside each receiving space S of the four lower tanks 210 is within a set time, when the temperature differs by more than ± 5 ° C, the lower tank 210 is detected as having a low temperature. If it is determined that there is an abnormality in the installed heating element 220, the control unit 550 may cut off the power applied to the heating element 220 or cut off the power applied to the entire heating element 220 to perform maintenance or replacement. Control.

And, in the receiving space (S) of each lower tank 210, the pocket member 260 having a rapid heating space (S2) formed therein is formed in a hollow shape with both ends opened to accommodate the heating element 220, respectively. do. These pocket members 260 are for receiving the heating element 220 and the heat medium oil and rapidly heating and circulating the heat medium oil in a narrow space when power is supplied. Both ends of the pocket member 260 may be opened, and as shown in FIG. 3, one side may be opened and the other side may be formed with through holes for introducing the heat medium oil.

A portion of the heat medium oil accommodated in each receiving space (S) by these pocket members (260) can be rapidly heated in a narrow space (rapid heating space) to be circulated to the inflow air preheating pipe (700).

The pocket member 260 configured as described above is fixedly installed in the lower tank 210 by a plurality of support brackets B.

In addition, each pocket member 260 has one end of each of the first circulation pipes 710 of the inflow air preheating pipe 700 to be described later penetrates through the lower tank 210 to the inside of each rapid heating space S2. It is combined to communicate with. That is, the end portion of the first circulation pipe 710 is the lower tank () so that the high-temperature heat medium oil rapidly heated in the rapid heating space S2 is directly circulated through the first circulation pipe 710 directly to the heat exchange unit 720. 210) is coupled to communicate with the interior of each rapid heating space (S2). As such, the end portion of the first circulation pipe 710 is configured to communicate directly with the pocket member 260, so that the heat medium oil rapidly heated to high temperature in the rapid heating space S2 can be immediately circulated to the heat exchanger.

In this embodiment, each of the lower tanks 210 and the lower connection parts 240 are represented and described in the form of a square tube, but the present invention is not limited thereto and may be configured in various forms. However, in order to have a stable coupling structure, it is preferable to be formed in a square cross section.

The upper accommodating part 300 is for allowing the heating medium oil heated in each lower tank 210 to move upward and circulate to be mixed, and each lower tank 210 and the first and second upper parts of the lower accommodating part 200 are mixed. It consists of the first and second upper tanks 310 and 320 communicated in the vertical direction by the connecting parts 312 and 322. That is, the first upper tank 310 through which the heat medium oil circulates is communicated with the lower tanks 210 and one ends by the respective first upper connecting parts 312 at the upper surface of each one end of each of the lower tanks 210 and , It is made of a second upper tank 320 through which the heat medium oil circulates in communication with the other ends of the lower tank 210 by the respective second upper connecting portion 322 at the upper surface of each opposite end of each lower tank (210). The first and second upper tanks 310 and 320 have symmetrical shapes, and one surface faces each other.

The first upper tank 310 or the second upper tank 320 is provided with a safety valve S / B for opening at a pressure set when the pressure inside the receiving space S rises, and the receiving space ( An overflow valve (O / B) is provided to allow the heat medium oil to be discharged by expansion of the heat medium oil accommodated in S).

The heat exchange pipe 400 is for heat exchange of the external air while the heat medium oil accommodated in the first upper tank 310 and the second upper tank 320 circulate with each other to increase the temperature of the external air, and the first upper parts facing each other The tank 310 and the second upper tank 320 are coupled so that their respective ends communicate with each other, so that the heating medium oil of the upper receiving part 300, that is, the heating medium oil accommodated in the first upper tank 310 and the second upper tank 320, To cycle. 2 and 3, each of the heat exchange tubes 400 is arranged in a zigzag manner so that contact with external air is smoothly performed. In addition, radiating fins 410 are radially protruded on the outer circumferential surface of each heat exchange tube. The heat dissipation fin 410 may be formed to protrude directly from the heat exchange tube 400, but the heat dissipation fin 410 in the form of a tube may be fitted with an aluminum material having excellent heat conductivity.

The blower fan 600 is forced to flow outside air into the housing 500 to contact the heat exchange pipes 400 and the upper receiving portion 300 and the lower receiving portion 200, and then the outlet 520 in a heated state. For discharging to), it is installed in the upper portion of the housing 500, that is, the inlet hole 510 formed in the top panel. The blower fan 600 is operated and controlled by the control unit 550.

The inlet air preheating pipe 700 circulates and heats the heat medium oil rapidly heated in the lower receiving part 200 described above during the initial operation of the warm air fan 100 toward the inlet hole 510 of the housing 500. For preheating by rapidly heating the external air introduced by the fan 600, one end is connected to one of the lower accommodating part 200 or the upper accommodating part 300, and the other end is the lower accommodating part 200 Or it is connected to the opposite side of the upper receiving portion 300, the intermediate heat exchange portion 720 is installed to be exposed to the inlet hole 510 is configured to circulate the heat medium oil. At this time, the heat exchange unit 720, as shown in Figures 2 and 3, is made of a circular spiral so that the flow resistance of the circulating heat medium oil is minimized, the external air coming into contact with the inlet hole 510 has a resistance As it is minimized and introduced, the center is formed lower than the edge to contact the heat exchanger 720 and preheat. This shape has an approximately inverted cone shape. And the heat exchange unit 720 is configured to be the same as the number of the inlet hole 510 and has a structure that is integrally connected.

The inlet air preheating pipe 700 will be described in more detail.

The inflow air preheating pipe 700 includes a plurality of first circulation pipes 710 each of which has one end communicating with the receiving space S of each lower tank 210, and each heating element inside the lower tanks 210. The first parallel connecting pipes 730A connecting the other ends of the first circulation pipes 710 in two sets so that the heating medium oil heated by the 220s is uniformly supplied to the heat exchanger 720 and circulated. , The second parallel connection pipe 730B connecting the middle portions of the first parallel connection pipes 730A to each other, and the middle portion of the second parallel connection pipe 730B and the inflow end 720A of the heat exchange portion 720 The parallel connection portion 730 composed of the supply connection pipe 730C, and one end is connected to the outlet end 720B of the heat exchange portion 720, and the other end is the first upper tank 310, the second upper tank 320 Alternatively, the second circulation pipe 740 is connected to the second upper connection parts 322.

At this time, each end of the first circulation pipes 710 is coupled to the pocket member 260 to penetrate the lower tanks 210 and communicate with the inside of each rapid heating space S2, as described above. By this structure, the heat medium oil rapidly heated to a high temperature by the heating element 220 inside the rapid heating space S2 can be circulated directly to the inflow air preheating tube 700.

In addition, an auxiliary circulation pump 900 for circulating the heat medium oil rapidly heated in the rapid heating space S2 is installed at the supply connecting pipe 730C or the inflow end 720A.

Meanwhile, when the other end of the second circulation pipe 740 is connected to the second upper connection portions 322, the second circulation pipe 740 is provided with a number corresponding to the second upper connection portions 322, respectively. 2 includes circulating connecting pipes 740A communicating with the upper connecting portion 322. Then, the circulation connecting pipes 740A, respectively, circulate through the heat exchanger 720 to incline downwards so that the cooled heat medium oil flows into each receiving space S and the rapid heating space S2, respectively. It is joined through. That is, the heat medium oil cooled by circulating through the heat exchange unit 720 is uniformly introduced into each second upper connection unit 322 through each circulation connection pipe 740A branched into a plurality, and partially transferred to the accommodation space S It is configured to circulate and the other part is introduced into the rapid heating space S2 and heated rapidly again.

The operation of the warm air fan 100 having the heat medium oil circulation structure according to the present invention configured as described above will be described.

When the user operates the warm air fan 100, the control unit 550 applies power to the heating element 220 of the pocket member 260 provided inside each lower tank 210, and at the same time, the circulation pump 800 and the auxiliary circulation pump. (900), the blowing fan 600 is operated.

Since the heating element 220 is generated by this operation, the heat medium oil of the rapid heating space S2 of the pocket member 260 is rapidly heated in a rapid time and then circulated to the inflow air preheating pipe 700.

Since the heat exchanger 720 is exposed to the inlet hole 510, the high-temperature heat medium oil circulated to the inlet air preheating pipe 700 is heat-exchanged with the outside air forced into the inlet hole 510 to preheat the outside air to high temperature. Is done.

The external air preheated to the high temperature by the heat exchange unit 720 while flowing into the inlet hole 510, each heat exchange pipe 400, the first and second upper tanks 310 and 320 of the upper receiving portion 300 and the lower receiving It is heated again while being in contact with each of the lower tanks 210 of the unit 200 and then heated up and then discharged to a space requiring warm air through the outlet 520.

As such, when the warm air fan 100 is initially operated, a small amount of heat medium oil accommodated in each pocket member 260 is rapidly heated to a high temperature to preheat the external air that flows in. Therefore, it is necessary to increase the temperature of the warm air discharged to the outlet 520. The time can be significantly shortened.

In addition, since the external air can be rapidly heated to a set temperature, the time for heating the external air is reduced, so that the energy (power) required to heat the external air can be significantly reduced.

Meanwhile, the heat medium oil cooled while passing through the heat exchanger 720 is circulated back to the receiving space S.

Then, the heating medium oil heated in the accommodation space S of each lower tank 210 moves upward by the first and second upper connection parts 312 and 322 and circulates to the first and second upper tanks 310 and 320. The heat exchange tubes 400 are heated while circulating in the horizontal direction by the plurality of heat exchange tubes 400.

In this process, the preheated external air that is in contact with the heat exchange tubes 400 is further heated and heated to a high temperature, and then discharged to the outlet 520.

As such, a portion of the heating medium oil is heated by the heating element 220 in the rapid heating space S2, which is a limited space of each pocket member 260, so that it can be heated to a high temperature within a short time, and the heating medium is rapidly heated in this way The warming time of the warm air discharged by preheating the oil inflow air can be significantly shortened, and accordingly energy saving can be expected.

In addition, since each heating element 220 is provided in each lower tank 210 in communication with each other to heat a small amount of heat medium oil, the heating time of heat medium oil can be significantly shortened.

In the foregoing, although specific embodiments of the present invention have been described and illustrated, the present invention is not limited to the described embodiments, and it is common knowledge in the field of this technology that various modifications and modifications can be made without departing from the spirit and scope of the present invention. It is obvious to those who have it. Therefore, such modifications or variations should not be individually understood from the technical spirit or viewpoint of the present invention, and the modified embodiments should belong to the claims of the present invention.

100: warm air 200: lower receiving portion
210: lower tank 220: heating element
260: pocket member 300: upper receiving portion
310: first upper tank 320: second upper tank
400: heat exchanger tube 500: housing
510: inlet hole 520: outlet hole
600: Blowing fan 700: Intake air preheating tube
800: circulating pump 900: auxiliary circulating pump
S: accommodation space S2: rapid heating space

Claims (10)

Each has an independent receiving space to accommodate the heat medium oil, and is spaced apart from each other, and each end region is communicated by the respective lower connecting portions, and the receiving space is a rod-shaped heat generated by the power supplied. A lower accommodating part which is composed of lower tanks in which the heating elements are respectively installed in a horizontal direction and installed on the bottom inside the housing;
A first upper tank that communicates with the lower tanks and ends by the respective first upper connecting portions at the upper surface of each one of the lower tanks and circulates the heat medium oil, and at the upper surface of each opposite end of the lower tanks, respectively. An upper accommodating portion made of a second upper tank in communication with the other end of the lower tanks by the second upper connecting portions of which the heat medium oil circulates;
A plurality of heat exchange tubes in which the heat medium oil is circulated and heat dissipation fins are formed on the outer circumferential surface of each of the first upper tank and the second upper tank facing each other so that each end communicates with each other;
It is installed in the inlet hole formed on the upper portion of the housing, and the outside air is forced into the inside of the housing, and the outside air is heated while being in contact with the heat exchange tubes, the upper receiving portion, and the lower receiving portion, and then the Blowing fan to be discharged to the outlet formed on the side;
One end is connected to one side of the lower receiving portion or the upper receiving portion, the other end is connected to the opposite side of the lower receiving portion or upper receiving portion, the intermediate heat exchange portion is installed so as to be exposed to the inlet hole, preheating the inlet air to circulate the heat medium oil tube; And
It characterized in that it comprises a circulation pump installed in the inlet air preheating pipe for forcibly circulating the heating medium oil,
A warm air fan with a circulation structure of heat medium oil. According to claim 1,
In the lower tank, a drain for selectively discharging heat medium oil is provided,
In the first upper tank or the second upper tank, a safety valve is provided for opening at a pressure set when the pressure inside the receiving space rises, and an overheating is performed so that the heating medium oil is discharged by expansion of the heating medium oil accommodated in the receiving space. Characterized in that the flow valve is provided,
A warm air fan with a circulation structure of heat medium oil. According to claim 1,
In the lower tanks,
Temperature sensing sensors for independently sensing the temperature of the heat medium oil in each of the accommodation spaces are respectively provided, and the control unit provided in the housing is based on the temperature value of the heat medium oil of each storage space sensed by the temperature sensors. Characterized in that it is configured to determine whether the heating element is defective, and to determine whether the circulation pump is operating,
A warm air fan with a circulation structure of heat medium oil. According to claim 1,
The heat exchange portion of the inlet air preheating tube,
Characterized in that it is made of a circular spiral so that the flow resistance of the circulating heat medium oil is minimized.
A warm air fan with a circulation structure of heat medium oil. According to claim 4,
The heat exchange unit,
Characterized in that the center is formed lower than the edge so that the external air flowing in is in contact with the heat exchanger and is preheated while the resistance is minimized.
A warm air fan with a circulation structure of heat medium oil. According to claim 1,
The inlet air preheating tube,
A plurality of first circulation pipes, each end of which communicates with the receiving space of each of the lower tanks;
The first parallel connecting pipes connecting the other ends of the first circulation pipes in a pair of two, so that the heating medium oil heated by the heating elements in the lower tanks is uniformly supplied to the heat exchange unit, and the first A parallel connecting portion consisting of a second parallel connecting pipe connecting the intermediate portions of the parallel connecting pipes to each other, and a supply connecting pipe connecting the intermediate portion of the second parallel connecting pipe and the inlet end of the heat exchange portion; And
One end is connected to the outlet end of the heat exchange unit, the other end is characterized in that consisting of a second circulation pipe connected to the first upper tank, the second upper tank or the second upper connection,
A warm air fan with a circulation structure of heat medium oil. The method of claim 6,
In each receiving space of the lower tank,
It is formed in a hollow shape with both ends opened to accommodate the heating element, and pocket members having a rapid heating space are installed therein, and each end of the first circulation pipes penetrates through the lower tanks to obtain a rapid heating space. It is coupled to the pocket member so as to communicate with the inside, characterized in that the heat medium oil rapidly heated to high temperature by the heating element in the interior of the rapid heating space is immediately circulated to the inlet air preheating tube,
A warm air fan with a circulation structure of heat medium oil. The method of claim 7,
In the supply connector,
Characterized in that the auxiliary circulation pump is installed to circulate the heat medium oil rapidly heated in the rapid heating space,
A warm air fan with a circulation structure of heat medium oil. The method of claim 7,
When the other end of the second circulation pipe is connected to the second upper connection portions, the second circulation pipe is provided with a channel corresponding to the second upper connection portions, respectively, and the circulation connection pipe communicating with the second upper connection portion Including, and, the circulation connecting pipes, characterized in that through the heat exchange unit is circulated through the second upper connecting portion to be inclined downward so that the heat medium oil cooled to flow into each of the receiving space and the rapid heating space,
A warm air fan with a circulation structure of heat medium oil. The method of claim 8,
In the inlet hole,
An external air temperature sensor for sensing the temperature of the external air passing through the heat exchange unit is installed, and the control unit provided in the housing is provided that the temperature of the external air sensed by the external air temperature sensor is greater than or equal to the set temperature value. Characterized by being configured to stop the operation of the circulation pump and the auxiliary circulation pump, and to operate the circulation pump and the auxiliary circulation pump if the set temperature is lower than the set temperature.
A warm air fan with a circulation structure of heat medium oil.

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