JP-7857257-B2 - Heat exchanger-integrated heating element

JP7857257B2JP 7857257 B2JP7857257 B2JP 7857257B2JP-7857257-B2

Inventors

木谷悟
渡辺健太郎
村上雄紀

Assignees

株式会社ユタカ技研

Dates

Publication Date: 20260512
Application Date: 20230719

Claims (7)

A sealed container with a first stator fixed inside in a non-rotatable manner, The oil filled in the sealed container, A pump is rotatably positioned within the sealed container opposite the first stator, and forms a helical flow path for the oil between itself and the first stator. A power transmission shaft is provided, which supports the pump so as not to rotate at one end and connects the other end, which protrudes from the sealed container, to a power source for rotational power. A bearing member that rotatably supports the power transmission shaft in the sealed container, A heat exchanger placed inside the sealed container, A heat exchanger-integrated heating element is characterized by comprising external piping connected to the heat exchanger and extending to the outside of the sealed container.
A heat exchanger-integrated heating element according to claim 1, A heat exchanger-integrated heating element is characterized in that a second stator, having a hub fixed to the sealed container, is positioned between the pump and the first stator in the portion of the spiral flow path downstream of the first stator.
A heat exchanger-integrated heating element according to claim 1 or claim 2, The heat exchanger is characterized in that it is positioned between the pump and the wall surface of the sealed container.
A heat exchanger-integrated heating element according to claim 1 or claim 2, A heat exchanger-integrated heating element is characterized in that the power transmission shaft is arranged parallel to the direction of gravity, and the heat exchanger is located between the back of the pump and the ceiling wall of the sealed container.
A heat exchanger-integrated heating element according to claim 1 or claim 2, A heat exchanger-integrated heating element is characterized in that at least a portion of the heat exchanger is positioned to overlap with the helical flow path in the radial direction.
A heat exchanger-integrated heating element according to claim 1 or claim 2, A heat exchanger-integrated heater further comprises a circulation pump for circulating the heat transfer medium in the heat exchanger between the heat exchanger and external equipment located outside the sealed container, a first mechanical power transmission member fixed to the power transmission shaft outside the sealed container, and a second mechanical power transmission member fixed to the input shaft of the circulation pump outside the sealed container, wherein the circulation pump is driven by engaging the first mechanical power transmission member and the second mechanical power transmission member.
A heat exchanger-integrated heating element according to claim 6, The heat exchanger-integrated heating element is characterized in that the circulation pump is positioned between the sealed container and the second mechanical power transmission member.

Description

The present invention relates to a heating device comprising: a sealed container with a stator fixed immovably inside; a fluid filled in the sealed container; a pump rotatably positioned inside the sealed container opposite the stator and forming a helical flow path for the fluid between itself and the stator; a power transmission shaft that immovably supports the pump at one end and connects the other end, which protrudes from the sealed container, to a power source for rotational power; and a bearing member that rotatably supports the power transmission shaft in the sealed container. The heating device converts rotational energy into thermal energy by rotating the pump with the rotational power of the power source and agitating the fluid inside the sealed container. It is known, as disclosed in Patent Document 1, that such a heating device can be connected to a power source such as a wind turbine or an axial-flow water turbine to agitate a fluid filled in a sealed container, and the fluid heated by the agitation can be extracted to the outside as thermal energy. Japanese Public Gazette No. 58-49005 Figure 1 is a schematic longitudinal cross-sectional view showing the configuration when the heat exchanger-integrated heater of the embodiment is applied to a vertical-axis wind turbine.Figure 2 is an enlarged view of section A in Figure 1.Figure 3 is a plan view of only the heat exchanger of the embodiment, as seen from the direction of arrow 3-3 in Figure 2.Figure 4 is a plan view of the mechanical power transmission member of the embodiment, as seen from the direction of arrow 4-4 in Figure 2. Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in Figure 1 and Figure 2, an enlarged view of section A in Figure 1, the heat exchanger-integrated heater 1 of this embodiment comprises an annular first stator 2 having a plurality of blades 2a arranged in the circumferential direction, a sealed container 3 in which the first stator 2 is fixed immovably, oil 4 filled in the sealed container 3, an annular pump 5 having a plurality of blades 5a facing the blades 2a of the first stator 2 and rotatably arranged within the sealed container 3, forming a spiral flow path 6 for the oil 4 between itself and the first stator 2, a power transmission shaft 7 that immovably supports the pump 5 at one end 7a and connects the other end 7b protruding from the sealed container 3 to a wind turbine 8 as a power source for rotational power, and bearing members 9a to 9c that rotatably support the power transmission shaft 7 in the sealed container 3. The sealed container 3 is fixedly positioned in a building (not shown) or the like, with the power transmission shaft 7 facing the direction of gravity, and is sealed by the joint of its upper half 3a and lower half 3b. A rolling bearing 9a and a sealing member 10 are positioned in the center of the upper half 3a of the sealed container 3. In this embodiment, the first stator 2 is formed as part of the sealed container 3 in the lower half 3b. A receiving surface 3c for the power transmission shaft 7 is formed in the center of the lower half 3b by cutting out the hub 2b of the first stator 2, and a rolling bearing 9b is also positioned between the lower end of the power transmission shaft 7 and the receiving surface 3c. However, the first stator 2 may be formed as a separate component from the sealed container 3 and later fixed to the sealed container 3. An annular second stator 11 is positioned on the hub 2b of the first stator 2, having a hub 11b that is detachably fixed to the hub 2b. The second stator 11 has a plurality of blades 11a extending radially outward from the outer circumference of the hub 11b, and these blades 11a are positioned between the blades 2a of the first stator 2 and the blades 5a of the pump 5. On the other hand, the hub 2b of the first stator 2 has a cylindrical portion 2c that surrounds the power transmission shaft 7 so as to be rotatable relative to it, and an inward-facing cylindrical portion 11c formed on the upper inner circumference of the hub 11b of the second stator 11 is detachably fitted into a stepped portion 2d formed by reducing the diameter radially inward at the upper end of the cylindrical portion 2c. Multiple outward-facing teeth 2e are formed on the outer circumferential surface of the cylindrical portion 2c, which is continuous with the stepped portion 2d of the first stator 2. Multiple inward-facing teeth 11d, which protrude radially inward from the lower surface of the cylindrical portion 11c of the hub 11b, are removably fitted to these outward-facing teeth 2e. By replacing or removing this second stator 11, the pump capacity of the heater can be changed, as described later. Furthermore, the hub 5b of the pump 5 is spline-fitted to the power transmission shaft 7 in a way that prevents rotation. A rolling bearing 9c is positioned between the lower surface of the hub 5b of the pump 5 a