KR100191292B1 - Heating equipment - Google Patents

Abstract

The present invention proposes a heating apparatus that can use heat generated from a pump for fruit circulation as a heat source, and does not need to separately install a heater or a boiler as a heating heat source.

A submersible motor pump (3) having a stator core and a rotor core made of a magnetic material having low electrical resistance and high heat generation is provided in a container (1) enclosed by sealing the heat transfer liquid (B). The suction port is arranged to suck the heat transfer liquid in the sealed container, while the circulation line 6 of the heat transfer liquid discharged from the pump is connected to the return port of the sealed container, The heat generated in the core is transferred to the heat transfer liquid B, and a heat radiating part 8 is provided in the middle of the circulation line 6 to radiate heat.

Description

Warmer

1 is a conceptual diagram showing the overall configuration of the heating apparatus of the present invention.

Figure 2 is a perspective view of the main portion of the canned motor pump used in the present invention.

3 is a plan view in which a plurality of heating panels 8a are provided together.

4 is an explanatory diagram in which a heating panel 8a is disposed in the ground of an agricultural or horticultural greenhouse 10 such as a plastic house.

5 is a cross-sectional view of the floor heating mat 8b.

6 is a side view of the radiator 11 lying on the floor.

* Explanation of symbols for main parts of the drawings

1: container 2: cover

3: canned motor pump 4: suction side

5: exit side 6: circulation line

7: return port 8: heat dissipation unit

8a: Heating panel 8b: Floor heating mat

9: fruit supply pipe 10: greenhouse

11: radiator 21: inlet cover

22: outlet cover 25: flame

26: flame side plate 27: the main shaft

30: wing car 32: rotor core

33: stator core 34: stator coil

35: can pipe

[Industrial use]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating apparatus for agriculture, horticulture or homes, which uses heat generated by a motor during pump operation as a heat source.

[Problems with Conventional Technology]

BACKGROUND ART Conventionally, a method of using steam, hot water, or an electric heater as a heating heat source such as an agricultural or horticultural greenhouse is known. However, any of the above methods requires a pump for fruit circulation, and by installing a heater or a boiler, requires a large-scale construction, and has a problem of high facility cost and running cost.

[Problems that the invention tries to solve]

It is an object of the present invention to provide an advantageous heating apparatus of the above cost, using heat generated in an underwater motor pump as a heat source in view of the drawbacks of the conventional one.

[Means for solving the problem]

According to the present invention, a submersible pump having a stator core and a rotor core made of a magnetic material having low electrical resistance and high heat generation in a container sealed with a heating liquid is installed so as to be immersed in the liquid. While arranged to suck the heat transfer liquid in the sealed container, the circulation line of the heat transfer liquid discharged from the pump is connected to the return port of the sealed container, and is generated at the core and the core winding at the time of powering the pump. It is to propose a heating apparatus characterized by moving the heat to the heat transfer liquid, and heat radiation in the heat radiating portion installed in the middle of the circulation line.

The pump used in the present invention is an submersible motor pump that can be used by immersing in a liquid. The pump center is a axial through-flow type in which the heat transfer fluid flows through the center of the pump, while the stator core and the rotor core have a thickness. It is formed using a mild steel plate (carbon content C = 0.03 to 0.4%) of 0.5 to 1.6 mm, and improves heat generation from the steel sheet constituting the core at the time of energization.

Moreover, the heat radiating part suitable for this invention is a underground investment type panel arrange | positioned in agricultural or horticultural greenhouses, such as a plastic house, and the heat supply liquid supply pipe is piped to this panel.

Another suitable heat dissipation portion is constituted as a floor heating mat, in which a supply pipe for the heat transfer liquid is piped. Moreover, another suitable heat dissipation part of this invention is comprised as a radiator (heater), and the radiator becomes the supply pipe of the heat transfer liquid liquid in the inside.

EXAMPLE

Next, the structure of this invention is demonstrated with reference to drawings.

FIG. 1 shows one embodiment of the apparatus of the present invention, wherein reference numeral 1 in the drawings is a container formed by encapsulating a heat-transfer liquid, and as an example, a cylindrical or rectangular cylinder having a diameter of 350 mm and a height of 560 mm is used.

Into this container was put 40 liters of an aqueous solution (trade name Weston Proline (WBPB): manufactured by Shishiai Co., Ltd.) containing propylene glycol as a main component, and the opening was sealed by a lid (2). do. Further, the canned motor pump 3 is provided to be immersed in the heat transfer liquid B. FIG. In addition, the suction side 4 of the pump is arranged to suck the heat transfer liquid B in the sealed container 1, while being connected to the outlet side 5 of the pump and returned to the sealed container again. The circulation line 6 of the electrothermal fluid is connected to the return port 7 of the sealed container.

In addition, the circulation line 6 is connected to a heating panel constituting the heat dissipation unit 8 of the present invention as shown in FIG. Let it flow

3 is a plan view in which a plurality of heating panels 8a... Are arranged together, and a supply pipe 9 of a heat transfer liquid liquid, for example, in a loop shape is disposed inside the panel.

FIG. 4 is an explanatory diagram in which the heating panel 8a of FIG. 3 is disposed in the ground of an agricultural or horticultural greenhouse 10 such as a plastic house. As an example, it is used by embedding at a depth of about 20 cm from the ground surface (GL).

5, the floor heating mat 8b which is a heat dissipation part of this invention is shown, and the heat supply liquid supply pipe 9 is arrange | positioned in the mat. In FIG. 6, it is also possible to connect the circulation line 6 of the heat transfer fluid to the radiator 11 which is placed on the floor, so that the heat transfer medium may flow in the supply pipe 9 of the heat transfer fluid inside the radiator 11.

As the pump of the present invention, as shown in FIG. 2, an axial perfusion type canned motor pump having a large heat generation amount at the time of pump energization is suitable. Hereinafter, the structure of the pump will be described with reference to FIG. 2, and reference numerals 21 and 22 are gunmetal inlet cover and outlet cover provided at both ends of the pump, 23 is an inlet port, and 24 is an outlet port. 25 is the stainless steel frame of the pump and 26 is the flame side plate at both ends. The main shaft shown by the code | symbol 27 is arrange | positioned at the center of the pump, The main shaft is supported by the thrust bearing 28 and the bearing support part 29 of both ends. An impeller 30 is fixed to one end suction port side of the main shaft 27.

Moreover, the vane 30 is comprised so that it may rotate integrally by the rotation action of the main shaft. 32 is a rotor core fixed integrally to the main shaft through the rotor support member 31 on the outside of the main shaft. The rotor core 32 and its supporting member 31 are disposed so as to be immersed in the liquid passing through the pump center.

Reference numeral 33 denotes a stator core disposed between the core 32 and the flame 25 so as to face the rotor core 32, and 34 denotes a stator coil. The stator core and the stator coil are transferred to the heat transfer liquid by pressing a stainless steel pipe 35 provided between the rotor core 32 and the flame side plate 26 and an O-ring shown by reference numeral 36. It is configured to block from. In FIG. 1, reference numeral 37 denotes a power cord of the canned motor pump 3, 38 denotes a temperature sensor installed in the container 1, and the heat transfer liquid B in the container 1 is equal to or higher than a predetermined temperature. When the pump 3 stops when it rises or falls below a predetermined temperature, the pump 3 is electrically connected through a control device so as to operate automatically (not shown).

Although not shown, the temperature control sensor for preventing overheating is attached to the stator coil 34 of the motor, and the operation of the device is automatically stopped during overload.

Therefore, in this invention, in order to improve the smokeability at the time of energization of a pump, the following structures are employ | adopted as a core of a pump. That is, the stator core and the rotor core may be formed of a magnetic material having low electrical resistance. Preferably, the stator core and the rotor core are made of a mild steel plate having a thickness of 0.5 to 1.6 mm (carbon content C = 0.03 to 0.4%). And heat generation from the core when the pump is energized.

[Action]

When the pump of the above structure is energized, the rotor blades 32 rotate the main rotor wheel 30 from the rotor core 32.

The heat transfer liquid B in the container 1 is sucked in the inlet port 23 by the rotation of the vane, passes through the pipe 35 and passes through the outlet port 24 to the circulation line 6. And return to the container 1 again through the heat dissipation unit 8.

In this process, the rotor core 32 and the stator core 33 of the pump generate heat, and the heat is generated by the cover 21 and 22 and the pipe ( Through 35), the heat medium liquid through the pump center and the heat medium liquid B around the pump are heated. The heated heat transfer liquid B is supplied to the heat radiating part 8, and this heat radiating part 8 heats a to-be-heated body (for example, soil in a plastic house).

As described above, since the pump used in the apparatus of the present invention is formed of a magnetic material having a low electrical resistance value and high heat generating property, the container 1 is not required to be provided with a heater separately due to the action of heat generated from the pump at the time of pump energization. The heat transfer liquid B inside is heated. In particular, the pump used in the present invention is a canned pump that can be used by being immersed in a liquid. Since the center of the pump is an axial through-flow type in which the heating fluid is a system fluid, the heat exchange efficiency of the heating fluid (B) is excellent. Do.

[Effects of the Invention]

Since the present invention has the configuration and action as described above, it is possible to use the heat generated from the submersible motor pump for fruit circulation as a heat source, it is possible to provide an economically advantageous heating device, heating The practical effect is high in that it does not need to install a heater or a boiler separately as a heat source.

Claims (5)

In the container 1 enclosed by sealing the heat transfer liquid, an underwater motor pump 3 having a stator core 33 and a rotor core 32 made of a magnetic material having low electrical resistance and high heat generation is placed in the liquid. It is immersed, and the suction port 4 of the pump 3 is arranged to suck the heat transfer liquid in the sealed container, and the circulation line 6 of the heat transfer liquid discharged from the pump 3 is installed. A heat dissipation unit 8 connected to the return port 7 of the sealed container, and installed in the middle of the circulation line 6 by moving the heat generated from the core and the core winding to the heat transfer liquid during the pump energization. Heating device characterized in that the thermal radiation from). The pump of claim 1, wherein the pump is a canned structure in which the stator of the motor is sealed by the flame 25 and the pipe 35, and at the same time, the axial-perfusion type canned motor pump through which the heat transfer fluid, which is the system liquid, flows through the motor center. The stator core 33 and the rotor core 32 are formed by using a mild steel plate having a thickness of 0.5 to 1.6 mm to increase the heat generation property when the pump is energized. 2. The heat dissipation unit (8) according to claim 1, wherein the heat dissipation unit (8) is a heating panel (8a) disposed in the ground in an agricultural or horticultural greenhouse such as a plastic house, and the supply pipe (9) of the heating fluid is piped to the panel. Heating device, characterized in that. The heating apparatus according to claim 1, wherein the heat dissipation unit (8) is a floor heating mat (8b), and a supply pipe (9) of the heat transfer liquid is piped to the mat. The heating apparatus according to claim 1, wherein the heat dissipation unit (8) is a radiator (11), in which a supply pipe (9) of the heat transfer liquid is piped in the radiator.