JP3202235U - Fluid heater - Google Patents

Abstract

An object of the present invention is to provide a fluid heater with improved heat efficiency and increased heat quantity by preventing leakage from the fluid. A hollow housing 2 made of an insulator, a diffuser inflow portion 3 having an aperture smaller than the inner diameter of the hollow housing 2 and formed at the bottom of the hollow housing 2, and a hollow A diffuser outflow portion 4 that is formed of an insulator and has an aperture smaller than the inner diameter of the housing 2 and disposed at the top of the hollow housing 2, and is disposed and fixed in the longitudinal direction inside the hollow housing 2. A polygonal columnar core column 5 having a polygonal bottom surface with one side curved inward, and a bare heating wire 6 spirally wound around the core column 5 are provided. [Selection] Figure 1

Description

  The present invention relates to a fluid heater, and more particularly, to a fluid heater that is arranged in a substantially vertical position and heats and uses a fluid that is circulated from the bottom to the top of the interior.

  Conventionally, a fluid heater of a type in which a fluid is passed only in one direction in a hollow housing, and the fluid is heated by directly contacting the heated heating wire, the conventional method is inferior in heat efficiency and fluid leakage. It was shunned as there was a risk of electric shock. Therefore, conventionally, a fluid heater (Patent Document 1) in which a fluid to be heated is guided using a channel having a ferromagnetic wall that covers an induction coil that is a heat generating portion, and a fluid heater using a sheathed heater have been developed. .

Special table 2011-501094 gazette Japanese Patent Laid-Open No. 7-249477

  However, in the field of fluid heaters, the method of directly heating a fluid to be heated from a heating element is simple and can be expected to improve thermal efficiency and heat amount if it can prevent leakage from the fluid. Therefore, it can be said to be a preferable means.

  Accordingly, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a fluid heater that prevents leakage from a fluid and improves thermal efficiency and heat quantity.

  As a result of diligent research, the inventors of the present invention have formed an insulating material on the bottom (bottom) and top (top) of an insulated fluid heater installed in a substantially vertical position, respectively. By arranging an inlet (diffuser inflow portion) and an outlet (diffuser inflow portion) formed to have a smaller diameter than the hollow housing of the fluid heater, the inflow port (diffuser inflow portion) Can be made turbulent by flowing the fluid from the outlet and letting the fluid flow out from the outlet (diffuser outlet), and the inside of the fluid heater (inside the hollow housing) is made of an insulator. The length of the fluid heater (the hollow housing) is a polygonal columnar core having a bottom surface with a polygon with at least one side curved inward. In the fluid heater, the leakage current from the fluid can be prevented, and the heat efficiency is improved and the amount of heat is increased by applying a pulse current by spirally winding a bare heating wire around this core column. The following ideas were completed.

(1) A fluid heater that is arranged in a substantially vertical orientation and that heats and uses a fluid that is circulated from the bottom to the top of the interior by energization, the hollow housing formed of an insulator, A diffuser inflow portion formed of an insulator having a smaller diameter than an inner diameter and disposed at a bottom portion of the hollow housing, and the hollow housing formed of an insulator having a smaller diameter than the inner diameter of the hollow housing A diffuser outflow portion disposed at the top of the hollow housing, and a polygon formed in an insulator and having at least one side curved inward, which is disposed and fixed in the longitudinal direction of the hollow housing. The fluid comprising a polygonal columnar core column having a bottom surface shape (cross-sectional shape) and a bare heating wire wound spirally around the core column Ta.

(2) The fluid heater according to (1), wherein the insulator is an insulator that can withstand a temperature of 0 to 150 ° C. and an internal pressure (fluid pressure) of 1 to 16 atmospheres.

(3) The fluid heater according to (1) or (2), further including a pulse current application unit for applying a pulse current to the bare heating wire.

(4) The fluid heater according to any one of (1) to (3), wherein a diffuser inflow portion and a diffuser outflow portion of the hollow housing are grounded.

(5) The fluid heater according to any one of (1) to (4), wherein an internal pressure (fluid pressure) inside the hollow housing is maintained at 1 to 16 atmospheres.

  According to the fluid heater according to the present invention, leakage from the fluid can be prevented, the thermal efficiency can be improved and the amount of heat can be increased.

It is a figure showing 1st embodiment of the fluid heater which concerns on this invention. It is a figure showing the cross section of the core pillar in 1st embodiment of the fluid heater which concerns on this invention. The core pillar in the second embodiment (A), the third embodiment (B), the fourth embodiment (C), the fifth embodiment (D) and the sixth embodiment (E) of the fluid heater according to the present invention. It is a figure showing a cross section. In 1st embodiment of the fluid heater which concerns on this invention, it is a figure showing a mode that the fluid turbulently distribute | circulates the inside of a hollow housing.

  Hereinafter, a first embodiment of a fluid heater according to the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the fluid heater 1 according to the first embodiment includes a hollow housing 2, a diffuser inflow portion 3, a diffuser outflow portion 4, a core column 5, and a bare heating wire 6, and The pulse current applying unit 7 is further provided with a grounding unit 8. Hereinafter, each configuration will be described in detail.

  As shown in FIG. 1, the hollow housing 2 in the fluid heater 1 of the first embodiment has a so-called cylindrical shape, and has a temperature of 0 to 150 ° C. and an internal pressure of 1 to 16 atmospheres (fluid pressure). It is preferable to be formed of an insulator capable of withstanding.

  As shown in FIG. 1, a diffuser inflow portion 3 and a diffuser outflow portion 4 are formed at the bottom portion (lower portion) and the top portion (upper portion) of the hollow housing 2 so as to have a smaller diameter than the inner diameter of the hollow housing 2. Is provided. The fluid that flows into the fluid heater 1 (inside the hollow housing 2) from the inflow opening 31 of the diffuser inflow portion 3 and flows out of the outflow opening 41 of the diffuser outflow portion 4 flows into the fluid heater 1 (hollow housing 2). Turbulent in the interior). Like the hollow housing 2, the diffuser inflow portion 3 and the diffuser outflow portion 4 are preferably formed of an insulator capable of withstanding a temperature of 0 to 150 ° C. and an internal pressure (fluid pressure) of 1 to 16 atmospheres. .

  Further, inside the hollow housing 2, as shown in FIG. 1, a polygonal columnar pillar 5 having a polygonal shape having a bottom surface (cross-sectional shape) curved at least on one side is arranged in the longitudinal direction of the hollow housing 2. The bottom of the core column 5 is fixed to the diffuser inflow portion 3, and the top of the core column 5 is fixed to the diffuser outflow portion 4 via a core column fixing tool 51. And as shown in FIG. 1, the bare heating wire 6 which is a heat generating body is wound around the core pillar 5 spirally. Similarly to the hollow housing 2, the diffuser inflow portion 3, and the diffuser outflow portion 4, the core column 5 is also formed of an insulator that can withstand a temperature of 0 to 150 ° C. and an internal pressure (fluid pressure) of 1 to 16 atmospheres. It is preferable.

  Here, the “insulator (non-conductor) capable of withstanding a temperature of 0 to 150 ° C. and an internal pressure (fluid pressure) of 1 to 16 atmospheres” is appropriately selected by those skilled in the art within a range not impairing the characteristics of the present invention. There is no particular limitation as long as it is a material using an insulator (nonconductor) or an insulator (nonconductor) that can be selected. Examples of such an insulator (nonconductor) include heat-resistant plastics and porcelain. , Mica, glass fiber, and the like, and combinations thereof.

  The bare heating wire 6 used in the fluid heater 1 of the first embodiment can also be appropriately selected by those skilled in the art within a range that does not impair the features of the present invention, and particularly if it is an uncoated heating wire. Although not limited, such bare heating wire 6 includes, for example, an uncoated nickel chrome heating wire, an uncoated iron chrome heating wire, and an uncoated Kanthal heating wire. Examples thereof include a heating wire made of an alloy having a high electrical resistance, such as a heating wire, and an uncoated heating wire and combinations thereof.

  In addition, the length of the bare heating wire 6 used in the fluid heater 1 of the first embodiment, the size of the diameter of the cross section, and the pitch of the spiral wound around the core column 5 (spiral width) Are appropriately selected by those skilled in the art within a range that does not impair the characteristics of the present invention in accordance with changes in the size and overall length of the hollow housing 2, the type and flow rate of the fluid, the thickness of the core column 5, and the bottom surface shape (cross-sectional shape). Is done.

  Next, “fluid” in the fluid heater 1 of the first embodiment is also appropriately selected by those skilled in the art within a range not impairing the characteristics of the present invention. For example, a mixed solution or solution obtained by mixing ethylene glycol, propylene glycol, ethanol or the like with water can be given.

  If the core column 5 in the fluid heater 1 of the first embodiment is also a polygonal column shape having a bottom surface shape (cross-sectional shape) that is a polygon whose at least one side is curved inward, the shape is a feature of the present invention. The term “polygon with at least one side curved inward” in “a polygonal column having a bottom surface shape (cross-sectional shape) with at least one side curved inward” is appropriately selected by those skilled in the art within a range that does not impair For example, as shown in FIG. 2, in addition to the substantially cross shape that is the bottom surface shape (cross-sectional shape) of the core column 5 in the fluid heater 1 of the first embodiment, the second embodiment shown in FIG. As in (A), the third embodiment (B), the fourth embodiment (C), the fifth embodiment (D), and the sixth embodiment (E), it is substantially C-shaped, substantially drum-shaped, and substantially triple-shaped. Tapered shape, approximately star-shaped (approximately asteroid) It can be mentioned polygon, polygon such as substantially star polygon such as a substantially pentagram, substantially star-hexagon with.

  Next, the pulse current application unit 7 includes a power source (not shown) and applies a pulse current to the bare heating wire 6. The configuration of the pulse current application unit 7 in the fluid heater 1 of the first embodiment is also appropriately selected by those skilled in the art within a range that does not impair the characteristics of the present invention. As shown in FIG. The bare heating wire 6 wound spirally may be installed on the top side or the bottom side of the fluid heater 1 of the first embodiment. Various transistors and various thyristors (not shown) may be installed as necessary. You may prepare.

  Next, the grounding portion 8 is disposed at both the diffuser inflow portion 3 and the diffuser outflow portion 4 to be grounded. Even when a current flows from the bare heating wire 6 to the fluid, the ground portion 8 can remove the current so as to be sandwiched from two directions on the top side or the bottom side of the fluid heater 1, thereby ensuring electrical safety. ing. That is, by providing these ground portions 8, the fluid heater 1 of the first embodiment is in an electrically closed state on the top side and the bottom side.

  The fluid heater 1 of the first embodiment having the above-described configuration can be connected in series in accordance with the required heating output, and can be used as a boiler as a whole.

  Hereinafter, the operation of the fluid heater 1 in the first embodiment will be described in detail with reference to the drawings.

  First, after the fluid heater 1 is installed substantially vertically, the fluid is circulated inside the fluid heater 1. When fluid flows into the fluid heater 1 (inside the hollow housing 2) from the inflow opening 31 of the diffuser inflow portion 3 disposed at the bottom of the hollow housing 2, the inside of the fluid heater 1 (inside the hollow housing 2) flows into the diffuser outflow portion. It flows in four directions and flows out of the fluid heater 1 (outside the hollow housing 2) from the outflow opening 41 of the diffuser outflow portion 4. At this time, since the diameters of the diffuser inflow portion 3 and the diffuser outflow portion 4, that is, the inflow opening 31 and the outflow opening 41 are smaller than the inner diameter of the hollow housing 2, as shown in FIG. The fluid that has flowed into the fluid heater 1 (in the hollow housing 2) is turbulent, and the fluid DS that has been turbulent in the fluid heater 1 (in the hollow housing 2) flows while being filled.

  Next, the pulse current application unit 7 is turned on to energize the bare heating wire 6 spirally wound around the core column 5, and the pulse current is applied to the bare heating wire 6. The bare heating wire 6 which is a heating element generates heat when a pulse current is applied, and heats the turbulent fluid DS flowing in the fluid heater 1 (inside the hollow housing 2). That is, heat exchange is performed between the bare heating wire 6 and the turbulent fluid DS.

  At this time, since the core column 5 has a polygonal column shape in which a polygon having at least one side curved inward is a bottom surface shape (cross-sectional shape), the bare heating wire 6 and the core column 5 wound spirally around the core column 5 are formed. There is always a gap between them. The turbulent fluid DS flows through the gap, and the heat generated by the bare heating wire 6 is efficiently transmitted to the turbulent fluid DS.

  The fluid is fed into the fluid heater 1 (inside the hollow housing 2) using a pump, but in order to further improve the efficiency of heat exchange between the bare heating wire 6 and the turbulent fluid DS, The turbulent fluid DS is circulated in the fluid heater 1 (in the hollow housing 2) at a high speed so that the internal pressure (in the fluid heater 1) (the pressure of the fluid) becomes 1 to 16 atmospheres. At this time, the temperature inside the fluid heater 1 (inside the hollow housing 2) including the core column 5, the bare heating wire 6, and the turbulent fluid DS is in the range of 0 to 150 ° C.

  It should be noted that the higher the vortex velocity of the turbulent fluid DS, the higher the efficiency of heat exchange between the bare heating wire 6 and the turbulent fluid DS, and the amount of heat increases. Et al.

  Further, even when an electric current flows from the bare heating wire 6 to the fluid, the fluid heater 1, that is, the hollow housing 2, the diffuser inflow portion 3, the diffuser outflow portion 4, and the core column 5 have a temperature of 0 to 150 ° C. and 1 to 16 atm. By being formed of an insulator that can withstand the internal pressure (fluid pressure), leakage from the inside of the fluid heater 1 can be prevented. Furthermore, a passive earthing portion 8 is provided in each of the diffuser inflow portion 3 and the diffuser outflow portion 4, and a fluid having an electric current so as to be sandwiched from two directions on the top side or the bottom side of the fluid heater 1. Current can be removed.

  In this manner, the fluid DS turbulent inside the fluid heater 1 circulates, so that the conversion coefficient K of electric energy to heat energy is larger than 1, approximately 1.3 to 1.8. The maximum value of 2.7 is recorded.

The fluid heater 1 in the first embodiment as described above has the following effects.
1. It is possible to realize a fluid heater that can prevent leakage from the fluid, improve the thermal efficiency, and increase the amount of heat.
2. The time for heating the fluid in the fluid heater can be shortened.
3. It is possible to reduce power consumption in the fluid heater.
4). It is possible to produce and realize fluid heaters and boilers that are extremely ecological despite their large calorific value.

DESCRIPTION OF SYMBOLS 1 Fluid heater 2 Hollow housing 3 Diffuser inflow part 4 Diffuser inflow part 5 Core pillar 6 Bare heating wire 7 Pulse electric current application part 8 Ground part 31 Inflow opening part 41 Outflow opening part 51 Core pillar fixture DS Turbulent fluid

Claims (5)

A fluid heater that is arranged in a substantially vertical orientation and that heats and uses a fluid that is circulated from the bottom to the top of the interior,
A hollow housing formed of an insulator;
A diffuser inflow portion having an aperture smaller than the inner diameter of the hollow housing, formed of an insulator and disposed at the bottom of the hollow housing;
A diffuser outflow portion formed of an insulator and disposed at the top of the hollow housing, having an aperture smaller than the inner diameter of the hollow housing;
Inside the hollow housing, a polygonal columnar core column that is arranged and fixed in the longitudinal direction of the hollow housing, is formed of an insulator, and has a polygonal shape with at least one side curved inward, and having a bottom shape,
The fluid heater, comprising: a bare heating wire wound spirally around the core pillar.   The fluid heater according to claim 1, wherein the insulator is an insulator that can withstand a temperature of 0 to 150 ° C. and an internal pressure (fluid pressure) of 1 to 16 atmospheres.   The fluid heater according to claim 1, further comprising a pulse current application unit configured to apply a pulse current to the bare heating wire.   The fluid heater according to any one of claims 1 to 3, wherein a diffuser inflow portion and a diffuser outflow portion of the hollow housing are grounded.   The fluid heater according to any one of claims 1 to 4, wherein an internal pressure of the hollow housing is maintained at 1 to 16 atmospheres.

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