US3342254A - Ventilating machine of supply-exhaust type with heat exchanger - Google Patents

Ventilating machine of supply-exhaust type with heat exchanger Download PDF

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Publication number
US3342254A
US3342254A US484299A US48429965A US3342254A US 3342254 A US3342254 A US 3342254A US 484299 A US484299 A US 484299A US 48429965 A US48429965 A US 48429965A US 3342254 A US3342254 A US 3342254A
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United States
Prior art keywords
air
duct
rotor
ventilating machine
supply
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US484299A
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English (en)
Inventor
Fujie Kunio
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Hitachi Ltd
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Hitachi Ltd
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Publication date
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Publication of US3342254A publication Critical patent/US3342254A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/009—Heat exchange having a solid heat storage mass for absorbing heat from one fluid and releasing it to another, i.e. regenerator
    • Y10S165/013—Movable heat storage mass with enclosure
    • Y10S165/016—Rotary storage mass

Definitions

  • FIG. 1(a) INVENTOR. K bl NIIO PU. M E
  • the invention relates to a new ventilating machine of the supply-exhaust type capable of simultaneously delivering air or gas streams in mutually opposite directions with a blade rotor (or runner) and, moreover, of accomplishing heat exchange at the same time between the air streams of opposite flow directions by means of a thermal regenerative matrix.
  • an object of the invention is to provide a ventilation machine of the supply-exhaust type based on a new concept and method whereby, with a single blade rotor, supplying and exhausting of air or a gas can be simultaneously accomplished, and heat exchange between the supply and exhaust air or gas can be l the terms concave and convex accomplished at the same time by means of a thermal regenerative matrix disposed coaxially with the rotor.
  • a gas ventilating machine of the supply-exhaust type comprising a cylindrical duct with an interior divided into two flow passages by a fiat partition extending in parallel to the duct axis along the length of the duct except for duct sections where rotating parts are positioned; a rotor with blades shaped in concave for-m, seen from the revolving direction of the rotor, and supported coaxially and rotatably with the duct in said duct section; guide vane assemblies respectively disposed near both axial ends of said rotor, one of which has vanes shaped concave and convex, respectively, when seen from the revolving direction of the rotor in each of the two flow-passages, and the other having vanes in opposite direction to the curvature of the first, whereby said rotation of the blade rotor causes gas flows in the two flow passages in mutually opposite directions, and/or means to promote heat exchange between said gas flows.
  • FIG. 1(a) is a side view of the interior of the ventilating machine of the present invention to indicate the shape and arrangement of the blades on the assumption that the cylindrical duct and the boss are transparent.
  • FIG. 1(b) is a cross sectional view taken along the plane indicated by line 1b 1b in FIG. 1(a);
  • FIG. 2 consists of three perspective views showing the construction of rotating blades and rotor (FIG. 2(a)) and guide vanes (FIGS. 2 (d) and 2(e)) suitable for use in the ventilating machine of the invention;
  • FIGS. 3( and 3(g) are respectively a side view with a part cut away and a longitudinal sectional view showing an embodiment of the ventilating machine according to the invention
  • FIG. 4 is a graphical representation, based on experimental results, indicating the relationship between air fiowrate arid static pressure at various rotor speeds in one example of the ventilating machine of the invention.
  • FIG. 5 is a longitudinal sectional view showing another embodiment of the invention.
  • the ventilation machine based thereon is generally installed within a duct 1 or like structure of circular cross section and comprises essentially a blade rotor 2 having blades 6 and rotated by a prime mover such as an electric motor (not shown), guide vane assemblies 3 and 4 fixed to the inner wall of the duct 1 on the two sides of the rotor 2, and a flat partition 5 dividing the interior of the duct 1 into two flow passages 88a and 99a.
  • a prime mover such as an electric motor (not shown)
  • guide vane assemblies 3 and 4 fixed to the inner wall of the duct 1 on the two sides of the rotor 2
  • a flat partition 5 dividing the interior of the duct 1 into two flow passages 88a and 99a.
  • the rotor 2 comprises several blades 6 of arcuate profile fixed radially to a boss 7 and of concave form as seen from the direction of the revolving rotor (hereinafter, are to be understood to be seen from that direction), as shown in FIGS. 1(b) and 2(a).
  • the guide vane assemblies 3 and 4 also have radial vanes with curved profiles, but in each assembly the convexities of the vane face on one side of the fiat partition 5 is opposite to that on the other side thereof as shown in FIGS. 1(a), 2(d) and 2(e).
  • the configuration of the vane assembly 3 is opposite to that of guide vane assembly 4, as shown in FIGS. 1(a), 2(d) and 2(e).
  • the air within the guide vane assembly 4 has an absolute velocity 1 since the vanes 4 have the configuration shown. Therefore, from the resultant velocity triangle, the relative velocity w of the air within the guide vane assembly 4 with respect to the rotor 2 may be considered to have the direction shown.
  • the direction of the relative velocity w of the air within the guide vanes 3 is approximately the same as the direction of the upper leading edge of the blades 6, but the direction of the relative velocity w,, of the air within the vanes 4 is substantially different from that of the lower leading edge of the blades 6. For this reason the resistance to the fiow of air from the guide vanes 4 into the rotor 2 becomes greater than that of air from the guide vanes 3. Consequently, the air flows from bow passage 8 toward flow passage 8a, and a velocity component w, from the guide vanes 4 toward the rotor 2 as indicated in FIG. 1(a) cannot exist.
  • angles of the edges of the guide vanes 3 and 4 and the blades of the rotor 2 of the ventilating machine of the invention as described above vary, depending on the fluid to be propelled, but in the case of air, angles substantially as indicated in FIG. 1(a) are recommended.
  • a regenerative matrix is incorporated in the structure of the ventilating machine shown in FIG. 1, and heat exchange is caused between the oppositely flowing streams of air.
  • the rotor 2 is driven by amotor 10 mounted in the boss 12 of the guide van assembly 4 and fixed thereto by bolts 13.
  • the guide vane assembly 4 is fixed by bolts 11 to the duct 1.
  • the boss 7 of the rotor 2 is fixed by a key 15 to the rotor shaft 14 of the motor 10, the rotor 2 being rotated in the direction of the arrow shown in FIG. 3(f).
  • a regenerative matrix 16 of mesh form made of metal Wire such as copper, aluminum, or iron wire is interposed between the blades 6 of the rotor 2 and greatly promotes the heat exchange between the streams of air caused by the rotation of the rotor 2 to flow in opposite directions in the flow passages 8-8a and 9-911. More specifically, the regenerative matrix 16 is heated, for example, by the air flowing through the passage 8-8a and, as it rotates, releases the heat stored therein to the air flowing through the passage 9-901, whereby simultaneously with the supplying of air in opposite directions, it is possible also to accomplish automatic heat exchange between the two air streams.
  • metal Wire such as copper, aluminum, or iron wire
  • the essential details of a ventilating machine according to the invention were as flows: number of blades on rotor 2, twenty; axial dimension t (as shown in FIG. 3 (g)) of rotor 2, 15 mm; diameter d of rotor, 150 mm.; number of vanes of each guide vane assembly, twenty; axial dimension l,,, of each guide vane assembly, 5 mm.; axial dimension l of regenerative matrix 16, 7.5 mm; and edge angles of blades and vanes as indicated in FIG. 1(a).
  • this ventilating machine was operated at a rotor rotational speed of 1,500 rpm. with a temperature difference of 20 degrees C. at the inlets of the air streams flowing in opposite directions, a tem- Cit perature difierence of approximately 10 degrees C. was obtained at their outlets.
  • the feature in which it differs from the example shown in FIG. 3 is the disposition of the mesh-form regenerative matrix 16, which, as shown in FIG. 5, is fixed to the rotor shaft 17 of the rotor 2 at a position on the outer side of one (4) of the guide vane assemblies.
  • the removal or replacement of the mesh-form regenerative matrix 16 from the outside is greatly facilitated, whereby, in the case when foreign substances such as dust are adhering to the matrix 16, it can be readily removed and cleaned.
  • the motor 10 is supported by support members 18 fixed by bolts or screws 19 to the duct 1.
  • the use of flanged ends of the duct 1 to form a unit product affords great convenience and adptability for suitable attachment to walls or other ducts.
  • the present invention provides a supply-exhaust ventilating machine capable, with a single rotor, of simultaneously supplying air streams in mutually opposite directions and, at the same time, causing heat exchange between these air streams by the use of a regenerative matrix rotating coaxially with the rotor. Accordingly, the present invention is highly effective and advantageous when applied to equipment requiring ventilation for air conditioning and heating and cooling of spaces thereby to accomplish simultaneous ventilation and heat exchange in an efiicient manner.
  • the ventilating machine according to the invention requires much less space, more specifically, of the order of from /3 to /2, of that required by conventional equipment for performing the same functions with the same air fiowrate and same heat-exchanging performance.
  • the regenerative matrix is to be mounted on a shaft separately from the blade rotor, it is preferable to reduce the rotational speed of the matrix by means such as gears to approximately 10 to 50 rpm. thereby to reduce mixing of the high-temperature and low-temperature gases.
  • a gas ventilating machine of the supply-exhaust type comprising a cylindrical duct with an interior divided into two flow passages by flat partitions extending in parallel with the duct axis along the length of the duct except for duct sections where rotating parts are positioned; a blade rotor fitted with blades wherein the blade face is concave and the blades are supported rotatably and coaxially with the duct in said duct section; means to drive said blade rotor in rotation in one direction; and guide vane assemblied respectively disposed near both axial ends of said blade rotor and having radial vanes with curved profiles, the curvature of the vane face on one side of the partition being opposite to that on the other side of the partition,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US484299A 1964-09-02 1965-09-01 Ventilating machine of supply-exhaust type with heat exchanger Expired - Lifetime US3342254A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4988864 1964-09-02

Publications (1)

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US3342254A true US3342254A (en) 1967-09-19

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US (1) US3342254A (de)
DE (1) DE1503559B2 (de)
GB (1) GB1108775A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4538963A (en) * 1983-07-08 1985-09-03 Matsushita Electric Industrial Co., Ltd. Impeller for cross-flow fan
US6244818B1 (en) * 1999-03-02 2001-06-12 Delta Electronics, Inc. Fan guard structure for additional supercharging function
US20040237540A1 (en) * 2000-09-26 2004-12-02 Seibu Giken Co, Ltd. Co-generation system and a dehumidification air-conditioner
US20070081888A1 (en) * 2003-11-18 2007-04-12 Howard Harrison Series fans with flow modification element
US20070173190A1 (en) * 2006-01-23 2007-07-26 Delta Electronics, Inc. Serial fan with toothed-type connecting elements
US20090263238A1 (en) * 2008-04-17 2009-10-22 Minebea Co., Ltd. Ducted fan with inlet vanes and deswirl vanes

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2717203B2 (de) * 1977-04-19 1981-05-07 Johannes 5067 Kürten Kirchmeier Wärmerückgewinnende Vorrichtung
US5731644A (en) * 1995-03-02 1998-03-24 Lucas Aerospace Power Equipment Corporation Integral cooling air diffuser for electromechanical apparatus
DE202008014290U1 (de) * 2008-10-27 2010-04-01 Wildeboer, Werner, Dipl.-Ing. Außenwandgerät für dezentrale Raumlüftungssysteme

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US500080A (en) * 1893-06-20 Gusts rateau
US1762320A (en) * 1927-09-17 1930-06-10 Int Comb Eng Corp Rotary air heater
FR719320A (fr) * 1930-09-02 1932-02-04 Ventilateur particulièrement applicable aux véhicules
US2398113A (en) * 1943-09-10 1946-04-09 Stewart Warner Corp Blower
US2650074A (en) * 1950-10-12 1953-08-25 Air Preheater Spring or gravity biased radial seal
US3078034A (en) * 1956-03-29 1963-02-19 Spalding Dudley Brian Pressure exchanger
US3118594A (en) * 1960-04-22 1964-01-21 Helmbold Theodor Methods for reducing fluid drag on bodies immersed in a fluid
US3221512A (en) * 1964-08-28 1965-12-07 Heinrich Nickel G M B H Air conditioner arrangement

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US500080A (en) * 1893-06-20 Gusts rateau
US1762320A (en) * 1927-09-17 1930-06-10 Int Comb Eng Corp Rotary air heater
FR719320A (fr) * 1930-09-02 1932-02-04 Ventilateur particulièrement applicable aux véhicules
US2398113A (en) * 1943-09-10 1946-04-09 Stewart Warner Corp Blower
US2650074A (en) * 1950-10-12 1953-08-25 Air Preheater Spring or gravity biased radial seal
US3078034A (en) * 1956-03-29 1963-02-19 Spalding Dudley Brian Pressure exchanger
US3118594A (en) * 1960-04-22 1964-01-21 Helmbold Theodor Methods for reducing fluid drag on bodies immersed in a fluid
US3221512A (en) * 1964-08-28 1965-12-07 Heinrich Nickel G M B H Air conditioner arrangement

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4538963A (en) * 1983-07-08 1985-09-03 Matsushita Electric Industrial Co., Ltd. Impeller for cross-flow fan
US6244818B1 (en) * 1999-03-02 2001-06-12 Delta Electronics, Inc. Fan guard structure for additional supercharging function
USRE39774E1 (en) 1999-03-02 2007-08-14 Delta Electronics, Inc. Fan guard structure for additional supercharging function
US20040237540A1 (en) * 2000-09-26 2004-12-02 Seibu Giken Co, Ltd. Co-generation system and a dehumidification air-conditioner
US20070081888A1 (en) * 2003-11-18 2007-04-12 Howard Harrison Series fans with flow modification element
US20070173190A1 (en) * 2006-01-23 2007-07-26 Delta Electronics, Inc. Serial fan with toothed-type connecting elements
US7661927B2 (en) * 2006-01-23 2010-02-16 Delta Electronics, Inc. Serial fan with toothed-type connecting elements
US20090263238A1 (en) * 2008-04-17 2009-10-22 Minebea Co., Ltd. Ducted fan with inlet vanes and deswirl vanes

Also Published As

Publication number Publication date
GB1108775A (en) 1968-04-03
DE1503559B2 (de) 1971-10-21
DE1503559A1 (de) 1970-07-30

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