Patents Assigned to Paloma Kogyo Kabushiki Kaisha
  • Patent number: 5720608
    Abstract: A combusting apparatus of the present invention can easily recharge an incorporated storage battery that has been exhausted to or below a required minimum level. A burner (18) in the combusting apparatus is further provided with a thermoelectricity generating element (4), which receives the heat of combustion and generates a thermoelectric e.m.f. When a multi-contact switch (16) is activated to set the arrangement of plural capacitors (15) in parallel, the capacitors (15) having the parallel configuration are charged with a thermoelectric e.m.f. generated by the thermoelectricity generating element (4). When an operation of a switching button (20) activates the multi-contact switch (16) to change the arrangement of the capacitors (15) from the parallel configuration to the series configuration, the sum of the voltages of the capacitors (15) is applied to an oscillation circuit (9) included in a booster circuit (8) as well as a storage battery (12).
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: February 24, 1998
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventors: Yutaka Aoki, Yuzuru Watanabe, Koichi Mitsufuji
  • Patent number: 5588822
    Abstract: In a pulse combustor in which a mixture of air and fuel gas is supplied into a combustion chamber and subjected to pulse combustion, a flame trap is provided at the inlet of the combustion chamber to prevent back fires. The flame trap is formed as follows: A first tape of metal foil such as stainless steel foil is welded to one side of a second tape of metal foil, for instance, by blazing in such a manner that the first tape is corrugated, thus forming cells between them. Next, the first and second tapes thus welded together are spirally wound and combined with each other, for instance, by blazing.
    Type: Grant
    Filed: April 19, 1995
    Date of Patent: December 31, 1996
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventors: Tsuneyasu Hayakawa, Makoto Kimura
  • Patent number: 5571007
    Abstract: The present invention provides a novel system for monitoring a predetermined operating condition of a heating apparatus, such as a cumulative total time period of combustion and a combustion frequency, and informing a user of a timing of maintenance. In a hot water heater (1) according to the invention, a controller (208) outputs a maintenance requirement signal to a display (210) and a maintenance alarm to inform the user of a timing of maintenance when a combustion frequency nx becomes equal to or greater than a first reference value nr1 or when a cumulative total time period of combustion tx becomes equal to or greater than a second reference value tr1. This allows the user to perform maintenance without delay and prevents troubles or abnormalities from being developed in the hot water heater (1).
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: November 5, 1996
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventors: Tomohisa Ishiguro, Atsushi Nishimura, Shigekazu Asai
  • Patent number: 5386815
    Abstract: An electric control system for a pulse combustion device of the type which includes a combustion chamber mounted within a liquid vessel of a liquid heating apparatus, fuel and air inlet valves arranged to supply a mixture of fuel and air into the combustion chamber, a tailpipe connected at one end thereof to an exhaust port of the combustion chamber to take place therein resonant combustion of the mixture of fuel and air and immersed in an amount of liquid stored in the vessel, and an electrically operated air intake blower arranged to supply fresh air into the combustion chamber through the air inlet valve.
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: February 7, 1995
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventors: Susumu Ejiri, Hiroshi Nishino
  • Patent number: 5379683
    Abstract: An improved cooking apparatus or cooker which heats and cooks food items in a cooking liquid medium by effectively controlling the temperature of the liquid medium. The cooker starts forcible combustion irrespective of the temperature of the liquid medium detected by a temperature sensor when the operator presses a forcible combustion switch. This system minimizes a time lag between placing food items into the cooking liquid medium and start of combustion, which is attributable to the uneven temperature distribution and convection of the cooking liquid medium, thus efficiently reducing undesirable temperature drop of the cooking liquid medium due to cold food items. Alternatively, the cooker determines presence of food items in the cooking liquid medium according to the downward slope in temperature instead of a press of the forcible combustion switch and automatically starts forcible combustion.
    Type: Grant
    Filed: March 9, 1993
    Date of Patent: January 10, 1995
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventors: Susumu Ejiri, Makoto Kimura, Hajime Hiraoka
  • Patent number: 5380190
    Abstract: The present invention provides a relatively compact-sized pulse combustor which efficiently reduces an undesirable explosion and combustion noise without any bulky muffler. In the pulse combustor of the invention, a compensating sound is generated in an exhaust conduit synchronously with pulsative explosion and combustion. The compensating sound has a sound pressure identical with that of a noise in the exhaust conduit but a phase opposite to that of the noise, thus effectively compensating the noise in the exhaust conduit and efficiently reducing the noise from an exhaust outlet.
    Type: Grant
    Filed: August 20, 1993
    Date of Patent: January 10, 1995
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventor: Naoki Kumagai
  • Patent number: 5380191
    Abstract: The invention provides an improved valve-less pulse combustor including a plurality of combustion systems and one common air supply system, wherein the air supply system includes an air supply controller which interferes with air supply to a combustion system under non-combustion conditions so as to effectively prevent a cooking medium in a tank of the combustion system from being cooled by the air supplied. The air supply controller may be a solenoid valve or a damper using a solenoid or a motor as a driving source.
    Type: Grant
    Filed: September 15, 1993
    Date of Patent: January 10, 1995
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventors: Tadashi Itakura, Susumu Ejiri
  • Patent number: 5341728
    Abstract: The present invention provides an improved alarm device which automatically starts accumulation of a heating amount when food items are placed into a cooking liquid and outputs an end-of-cooking signal when the accumulated heating amount reaches a predetermined value. This system makes an operator free from troublesome manual operation as pressing a start pad simultaneously with placing food items into the cooking liquid. The alarm device controls a cooker to start forcible heating irrespectively of its combustion conditions simultaneously with starting accumulation of the heating amount. The system of the invention prevents an undesirable time lag between substantial drop in temperature of the cooking liquid and start of heating and efficiently reduces the temperature fall due to cold food items, thus allowing food items to be cooked desirably.
    Type: Grant
    Filed: March 4, 1993
    Date of Patent: August 30, 1994
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventors: Susumu Ejiri, Hajime Hiraoka
  • Patent number: 5297474
    Abstract: The present invention provides an oil overflow alarming system incorporated in a fryer apparatus. When the fryer apparatus includes a first frypot and a second frypot, a control unit of the oil overflow alarming system detects whether at least one of a second drainage valve unit and a second supply valve unit of the second frypot is in an open position while a first drainage valve unit of the first frypot is open, where cooking oil contained in the first frypot is drained into a cooking oil filtration unit to be filtered and cleaned. When at least either the second drainage valve or the second supply valve is open, the control unit outputs an overflow signal to an alarm unit, which generates an overflow alarm corresponding to the overflow signal to urge an operator to close both the second drainage valve and the second supply valve, thus preventing cooking oil from overflowing from the cooking oil filtration unit or the second frypot.
    Type: Grant
    Filed: May 14, 1993
    Date of Patent: March 29, 1994
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventor: Yasuhiko Tabuchi
  • Patent number: 5261598
    Abstract: A safety device for a combustion apparatus comprises a continuous, linear temperature-sensing element formed of a material which is electrically conductive and melts, or breaks, at a relatively low temperature and located along at least one side of a combustion chamber of a combustion apparatus and one side of a heat exchanger thereof. The temperature-sensing element is electrically connected to a combustion control circuit such that, if and when the combustion chamber or the heat exchanger has reached an extremely high temperature, the temperature-sensing element melts, or breaks to cause said combustion control circuit to stop a combustion in said combustion chamber. Lead, tin, or an alloy of lead and tin may be employed as the material of the temperature-sensing element.
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: November 16, 1993
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventors: Susumu Shirayanagi, Yasuyuki Suzuki, Tomohisa Ishiguro
  • Patent number: 5261322
    Abstract: The present invention provides an improved fryer apparatus including a small size pulse combustor and an additional labor-saved function such as a filtering system or a lift system. The pulse combustor of the invention does not include a check valve or flapper valve for preventing back flow of combustion exhaust in an air supply system. This valve-free structure of the pulse combustor allows sufficient noise reduction without any silence or muffler and makes a free space for the filtering system or the lift system.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: November 16, 1993
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventors: Nobuyoshi Yokoyama, Susumu Eijiri
  • Patent number: 5220864
    Abstract: The invention realizes pulse combustion with a great turn down ratio, which is applicable to various controls and regulations in a noodle cooker. The noodle cooker of the invention heats water in a pot using a pulse combustor, which does not have a check valve for preventing back flow of combustion exhaust in its air supply system. A controller of the pulse combustor regulates the opening angle of a proportional electromagnetic valve for fuel supply and the rotating speed of a fan for air supply based on the water temperature detected by a temperature sensor and keeps the water temperature in the pot in a predetermined optimal range.
    Type: Grant
    Filed: September 9, 1992
    Date of Patent: June 22, 1993
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventors: Susumu Ejiri, Nobuyoshi Yokoyama
  • Patent number: 5205727
    Abstract: The present invention provides a simply constructed, improved pulse combustor realizing stable pulse combustion with less noise and vibration. The pulse combustor includes: a combustion chamber; a mixing chamber coupled with the intake side of the combustion chamber via a first opening provided with a flame trap; and an air chamber connecting to the mixing chamber via second opening. The second opening is eccentric with respect to the first opening. The fuel gas and air are simultaneously supplied through the second opening to the mixing chamber, sufficiently mixed in the mixing chamber, and fed into the combustion chamber. The exhausted gas flown back through the flame trap is diluted with the air/fuel mixture in the mixing chamber and again fed into the combustion chamber for continuous combustion while the reverse pressure is efficiently reduced by the mixing chamber and the air chamber.
    Type: Grant
    Filed: August 7, 1992
    Date of Patent: April 27, 1993
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventors: Yutaka Aoki, Tadashi Itakura
  • Patent number: 5201649
    Abstract: The present invention provides a simply constructed, improved pulse combustor realizing stable pulse combustion with less noise and vibration. The pulse combustor includes: a combustion chamber; a mixing chamber coupled with the intake side of the combustion chamber via an opening provided with a flame trap; a gas supply conduit connecting to the mixing chamber for supplying fuel gas; and an air duct connecting to the mixing chamber for supplying air. The total volume of the mixing chamber, the gas supply conduit, and the air duct (the total volume V2) is sufficiently greater than the volume of the combustion chamber (the combustion volume V1). Combustion byproducts flown back through the flame trap are diluted with the air/fuel mixture in the mixing chamber and again fed into the combustion chamber for continuous combustion while the reverse pressure is efficiently reduced by the total volume V2.
    Type: Grant
    Filed: August 7, 1992
    Date of Patent: April 13, 1993
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventors: Yutaka Aoki, Tadashi Itakura
  • Patent number: 5106292
    Abstract: In a pulse combustion device including a housing forming therein a combustion chamber, a cylindrical support member joined to the housing to form a mixing chamber in open communication with the combustion chamber, an annular perforated flange member coupled with an opene end of the support member and having a cylindrical portion provided at its center to form a gas passage in communication with the mixing chamber, an air inlet valve assembly mounted within the flange member to allow inward flow of air passing therethrough into the mixing chamber, and a gas inlet valve assembly disposed within the cylindrical portion to allow inward flow of gaseous fuel passing therethrough into the mixing chamber, an annular heat-blocking plate is arranged to oppose an aperature between the mixing chamber and the combustion chamber and mounted on the cylindrical portion of the flange member between the air inlet valve assembly and the aperture to block radiant heat of combustion products applied thereto from the combustion ch
    Type: Grant
    Filed: July 9, 1991
    Date of Patent: April 21, 1992
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventors: Susumu Ejiri, Tsuneyasu Hayakawa
  • Patent number: 5099108
    Abstract: A liquid heating apparatus includes a pulse combustion burner mounted to a liquid vessel and having a combustion chamber secured to a side wall of the vessel and immersed in liquid in the vessel, a tailpipe connected at its one end to an exhaust port of the combustion chamber and immersed in the liquid, and a fuel supply conduit in communication with the combustion chamber and being provided thereon with an electrically operated valve which is closed in a deactivated condition to interrupt the supply of fuel into the combustion chamber and opened in an activated condition to permit the supply of fuel into the combustion chamber.
    Type: Grant
    Filed: January 9, 1990
    Date of Patent: March 24, 1992
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventors: Makoto Kimura, Yasuhiko Tabuchi, Mitsutoshi Kimura
  • Patent number: 5044929
    Abstract: An ignition control apparatus for a pulse combustor, wherein the number of trials for energization of a spark electrode is calculated and memorized, the memorized number of trials is reset to an initial value or zero after ignition of the fuel-air mixture in a combustion chamber of the combustor has been successfully obtained, a period of time for pre-purge of the combustion chamber is determined in accordance with the memorized number of trials for energization of the spark electrode, and a purge blower for the combustor activated for the determined period of time prior to energization of the spark electrode to change the unburned mixture ratio to a non-combustible ratio on the trial for ignition. In the ignition control apparatus, the presence of flame in the combustion chamber is further detected for a predetermined time, and the purge blower is deactivated when a predetermined number of trials for ignition have been attempted due to lack of the presence of flame in the combustion chamber.
    Type: Grant
    Filed: September 12, 1989
    Date of Patent: September 3, 1991
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventors: Yasuhiko Tabuchi, Susumi Ejiri, Makoto Kimura
  • Patent number: 5044928
    Abstract: In a pulse combustion device including a combustion chamber having a cylindrical wall, a forward end wall secured to one end of the cylindrical wall for attachment with a liquid vessel and being formed with an inlet port to be supplied with a mixture of gaseous fuel and air, and a rearward end wall secured to the other end of the cylindrical wall to close the combustion chamber, the cylindrical wall of the combustion chamber is formed with a plurality of circumferentially equally spaced radial exhaust ports which are located respectively in a position displaced from the center of the combustion chamber in an axial direction toward the inlet port, and a plurality of tailpipes are radially inwardly bent at their one ends and secured to the exhaust ports of the combustion chamber.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: September 3, 1991
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventors: Nobuyoshi Yokoyama, Susumu Ejiri
  • Patent number: 5038747
    Abstract: A gas range having at least one stove top surface burner and an interior cooking chamber with a cooking burner includes a chimney extending above the cooking chamber to an exhaust opening at the rear of the top surface. A porous catalyzer plate fits into the exhaust opening and an afterburner is located in the chimney adjacent to the exhaust opening to partially burn and heat exhaust gases. The hot gases then activate the catalyzer to an optimum temperature for effecting their decomposition.
    Type: Grant
    Filed: September 27, 1989
    Date of Patent: August 13, 1991
    Assignees: Paloma Kogyo Kabushiki Kaisha, Toho Gas Co., Ltd.
    Inventors: Mitsuo Tsuchiya, Masafumi Matsubara, Hideo Chikazawa, Kazunori Ueyama
  • Patent number: 5038753
    Abstract: In a liquid heating apparatus of the pulse combustion type, a mounting plate is secured to a side wall of a liquid vessel for supporting thereon an air-fuel mixer head outside the vessel and a combustion chamber inside the vessel, and an inlet pipe is secured at its inner end to a front end wall of the combustion chamber and extended outwardly from the vessel through the mounting plate. The air-fuel mixer head is mounted to an outer end of the inlet pipe at a position spaced from the mounting plate, and the combustion chamber is supported by the inlet pipe at a position spaced from the mounting plate. During pulse combustion, the inlet pipe is cooled by the liquid flowing into the space between the front end wall of the combustion chamber and the mounting plate to protect the mixer head from the heat of high temperature transmitted thereto from the combustion chamber.
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: August 13, 1991
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventors: Nobuyoshi Yokoyama, Susumu Ejiri