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公开(公告)号：JPH10185280A
公开(公告)日：1998-07-14
申请号：JP34404196
申请日：1996-12-24
Applicant: TOSHIBA CORP
Inventor： TAKAHASHI YUKINOBU , YAMAZAKI KENJI , ARAI YASUHIRO , KOIDO TETSUYA , MISHIMA TAKECHIKA , SORAI AI , ISHIDA HIDEO
IPC: F24F11/02
Abstract: PROBLEM TO BE SOLVED: To make air conditioning equipment contribute to an improvement in a feeling of comfortableness for the whole period. SOLUTION: In air conditioning equipment having an indoor machine which comprises upper and lower outlets 6 and 12 provided above and below an inlet 4, heat exchangers 19 and 20 provided between these outlets 6 and 12 and the inlet 4 and upper and lower fans 17 and 18 provided between these heat exchangers and the upper and lower outlets 6 and 12 and is disposed in the vicinity of a floor in the use, a control device 32 controlling the quantities of blowing air from the upper and lower outlets 6 and 12 so that the quantities may correspond to a form of operation is provided. At the time when the form of operation is a heating operation, the control device 32 makes blowing of air started from the lower outlet 12 from the time point when the temperature of the heat exchangers 19 and 20 reaches a prescribed level, at the time of the start of the operation, and makes the blowing of air started also from the upper outlet 6 at the time point when a first condition is reached after the start of the operation, and it executes a control for shifting to a specified form of control of blowing, subsequently, from the time point when a second condition is reached.
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公开(公告)号：JPH09250833A
公开(公告)日：1997-09-22
申请号：JP5866496
申请日：1996-03-15
Applicant: TOSHIBA CORP
Inventor： ISHIDA HIDEO , ARAI YASUHIRO
IPC: F25B13/00
Abstract: PROBLEM TO BE SOLVED: To obtain an air conditioner that materializes a rapid heating and contributes to the comfort. SOLUTION: Prior to the start-up of heating operation, a controller 9 controls preheating of a heat-accumulating device 4 and then sets a throttling mechanism 5 and a flow control mechanism 7 in open state and an outdoor fan provided on an outdoor heat exchanger 6 in stopped state. Refrigerant sealed in a refrigerating cycle is compressed by a compressor 1 and turned to high pressure, high temperature gas and reaches an indoor heat exchanger 3 via a four-way valve 2. The refrigerant liquefies in the indoor heat exchanger 3 and enters the heat accumulating device 4 where the refrigerant gasifies completely. The gas refrigerant flows out the heat accumulating device 4 and directly enters a suction cup 8 of the compressor 1 via a refrigerant pipe 10a, the flow control mechanism 7 and a refrigerant pipe 10b.
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公开(公告)号：JPH07208821A
公开(公告)日：1995-08-11
申请号：JP298194
申请日：1994-01-17
Applicant: TOSHIBA CORP
Inventor： ARAI YASUHIRO , MOTOHASHI HIDEAKI , SANO TETSUO
Abstract: PURPOSE:To prevent a decrease in cooling/heating performance to become a problem when non-azeotropic mixture refrigerant is used and to improve heat transfer performance and the cooling/heating performance of an indoor heat exchanger at the time of cooling and heating. CONSTITUTION:A first pass 33 of a plurality of rows of tubes which are arranged on the same fin of an indoor heat exchanger 3 and in which non- azeotropic mixture refrigerant flows is so arranged that the refrigerant flows in a direction directed from a leeward side to a windward side of an indoor blower 7 at the time of a cooling cycle. Thus, a counterflow is realized. A second pass 34 is so arranged that the refrigerant flow in a direction directed from a windward side to a leeward side. Since it is near a parallel flow but number of the tubes at the leeward side is more than that of the tubes at the windward side and number of the tubes superposed on an air flow is less, relatively effective heat transfer can be obtained. Further, a third pass 35 is so arranged that the refrigerant flows in a direction directed from the windward side to the leeward side and further directed from the windward side to the leeward side so that a half becomes a counterflow, thereby improving heat transfer performance.
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公开(公告)号：JPH0798161A
公开(公告)日：1995-04-11
申请号：JP24290093
申请日：1993-09-29
Applicant: TOSHIBA CORP
Inventor： SANO TETSUO , ARAI YASUHIRO , MOTOHASHI HIDEAKI
Abstract: PURPOSE:To enable the composition ratio of the refrigerant of a freezer to be controlled and improve the control responding characteristics even though the refrigerant is non-azeotropic refrigerant or azeotropic refrigerant. CONSTITUTION:A refrigerant storing container 13 is arranged in a circuit of freezing cycle comprising a compressor 1, a four-way valve 9, a utilization side heat exchanger 3, a heat source side heat exchanger 5 and a pressure reducing device 7, and a freezer oil 15 into which mixed refrigerant can be solved is enclosed within the refrigerant storing container 13. Then, there is provided a control means for applying variation in pressure or temperature to the freezer oil 15 within the refrigerant storing container 13.
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公开(公告)号：JPH06281299A
公开(公告)日：1994-10-07
申请号：JP7246193
申请日：1993-03-30
Applicant: TOSHIBA CORP
Inventor： IWANAGA TAKAYOSHI , SANO TETSUO , ARAI YASUHIRO , YAMASHITA TETSUJI , GOTO KOICHI
Abstract: PURPOSE:To suppress a room temperature change to a range for not affecting influence to comfortableness by efficiently defrosting in a short time. CONSTITUTION:A vapor heat exchanger 5 has forward defrosting means 4 for feeding high temperature refrigerant from a forward direction, and reverse defrosting means 3 for feeding it from a reverse direction to defrost by combining and operating the means 3, 5.
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Patent Agency Ranking
公开(公告)号：JPH06281293A
公开(公告)日：1994-10-07
申请号：JP7480893
申请日：1993-03-31
Applicant: TOSHIBA CORP
Inventor： GOTO KOICHI , SANO TETSUO , ARAI YASUHIRO , IWANAGA TAKAYOSHI , YAMASHITA TETSUJI
Abstract: PURPOSE:To improve cooling and heating capacities by forming a heat exchanger of a tube for feeding refrigerant or a tube and fins, and forming the tube in a shape for sequentially increasing a sectional area of refrigerant flow flowing in the tube along a flowing direction of the refrigerant. CONSTITUTION:An outdoor heat exchanger 5 is formed of a tube 13 bent continuously in an S shape and fins 15S. Latent heat of the air to be condensed to the par to pass through the fins 15 by a blower 17 of an outdoor unit is derived of refrigerant gas fed in a high temperature and high pressure gas state from a compressor 1 to become liquid state. The tube 13 is reduced in its inner diameter of an inlet side 13a and sequentially increased in its inner diameter toward an outlet side 13b. The tubes 13 molded in the same sectional area may be sequentially so increased in number of buses to two, three from the inlet side 13a to the outlet side 13b. Thus, cooling and heating capacities can be improved.
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公开(公告)号：JPH06281273A
公开(公告)日：1994-10-07
申请号：JP7248193
申请日：1993-03-30
Applicant: TOSHIBA CORP
Inventor： ARAI YASUHIRO , SANO TETSUO , IWANAGA TAKAYOSHI , YAMASHITA TETSUJI , GOTO KOICHI
Abstract: PURPOSE:To improve steady performance at the time of cooling/heating and to improve control of defrosting an outdoor heat exchanger at the time of heating and control of preventing freezing of an indoor heat exchanger at the time of cooling. CONSTITUTION:An air conditioner comprises temperature difference detecting means 13, 14 for detecting a temperature difference of an intermediate temperature and an outlet temperature of an indoor heat exchanger 11 at the time of heating, and control means 15 for controlling subcooling degree of condensed refrigerant by controlling an opening of an expansion valve 4 based on the detected difference.
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公开(公告)号：JPH06273013A
公开(公告)日：1994-09-30
申请号：JP5996093
申请日：1993-03-19
Applicant: TOSHIBA CORP
Inventor： IWANAGA TAKAYOSHI , SANO TETSUO , ARAI YASUHIRO , YAMASHITA TETSUJI , GOTO KOICHI
IPC: F25B49/02
Abstract: PURPOSE:To achieve higher reliability by providing a judging means to deter mine the spillage of a refrigerant in detecting that a flow rate control means so arranged to vary the flow rate of the refrigerant in the refrigeration cycle by a direction from a controller is opened exceeding a fixed opening to detect the spillage of the refrigerant early and accurately. CONSTITUTION:This apparatus is provided with a compressor 1, a four-way valve 2, a room heat exchanger 3 and an electric type expansion valve 4 as flow rate control means. The opening of the electric type expansion valve 4 is controlled with a controller 6. In an airconditioning apparatus which has the electric type expansion valve 4 to vary the flow rate of a refrigerant in a refrigeration cycle by a direction from the controller 6, the opening of the electric type expansion valve 4 is adjusted so that it is controlled within a specified opening range at the development stage of a product. Thus, in the normal operation, the electric type expansion valve 4 operates properly as long as it is controlled within a specified opening range. When it is controlled outside the specified opening range any abnormality is determined to occur in a refrigeration cycle.
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公开(公告)号：JPH06241532A
公开(公告)日：1994-08-30
申请号：JP2893593
申请日：1993-02-18
Applicant: TOSHIBA CORP
Inventor： YAMASHITA TETSUJI , ARAI YASUHIRO , HIRAHARA MORIO
Abstract: PURPOSE:To make an air conditioner controllable with excellent responsiveness and stability and thereby to improve comfortability of an indoor space. CONSTITUTION:A non-interference computation means 11 which computes and outputs an outdoor fan revolution number control signal and a compressor revolution number control signal for controlling the number of revolutions of an outdoor fan 6 and the number of revolutions of a compressor 1 in a non-interference manner, on the basis of the respective comparative values of an indoor temperature setting signal with an indoor temperature signal and of an indoor humidity setting signal with an indoor humidity signal, is provided.
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公开(公告)号：JPH05340592A
公开(公告)日：1993-12-21
申请号：JP14762192
申请日：1992-06-08
Applicant: TOSHIBA CORP
Inventor： YAMASHITA TETSUJI , ARAI YASUHIRO
Abstract: PURPOSE:To provide an air conditioner in which a setting error by an installation contractor is eliminated and which can cope with an increase in indoor units by accurately setting information regarding capability of the indoor unit to the outdoor unit by utilizing data transfer instead of a capability changeover switch. CONSTITUTION:Control data including information regarding capability of an indoor unit stored in a memory 10 of an indoor unit 1 is transmitted to an outdoor unit 4 through a data transmission line 3 at the time of installing of an air conditioner or turning ON a power source, stored in a memory 11 of the unit 4, and an air conditioning operation responsive to the capability of the unit 1 is so controlled as to be conducted by the unit 4 based on the stored data.
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