Ebara Corporation

Kabushiki Kaisha Toshiba

Ebara Refrigeration Equipment & Systems Co., Ltd.

Toshio Matsubara

Naoyuki Inoue

Akiyoshi Suzuki

Tomoyuki Uchimura

Tomoyoshi Irie

Jun Murata

Hiroki Nakamura

Takashi Kaneko

Jun Aoyama

Norio Arai

Syouji Tanaka

Motonao Kera

Teruwo Shiraishi

Shouji Tanaka

Nobutaka Matsuda

The present invention provides a high-efficiency absorption refrigerating machine which can recover heat from a heat source and can efficiently recover heat from an internal cycle. The absorption refrigerating machine includes an evaporator, an absorber (A), a condenser (C), a high-temperature regenerator (GH), a low-temperature regenerator (GL), a low-temperature solution heat exchanger (LX), and solution paths and refrigerant paths by which these units are connected. The absorption refrigerating machine further comprises two branch solution paths branched from a solution supply path through which a dilute solution is introduced from the absorption (A) to the high-temperature regenerator (GH). On one of the branch solution paths, there is disposed a drain heat exchanger (DX) operable to perform heat exchange between the dilute solution in the branch solution path and an exhaust heat source which has heated the high-temperature regenerator (GH). On the other of the branch solution paths, there are disposed a first high-temperature solution heat exchanger (HX) and a second high-temperature solution heat exchanger (HX) operable to perform heat exchange between the dilute solution in the branch solution path and a concentrated solution heated and concentrated in the high-temperature regenerator (GH). The absorption refrigerating machine is configured such that the dilute solution flows through the first high-temperature solution heat exchanger (HX) and the second high-temperature solution heat exchanger (HX) in this order, and the concentrated solution discharged from the high-temperature regenerator flows through the second high-temperature solution heat exchanger (HX) and the first high-temperature solution heat exchanger (HX) in this order.

Absorption refrigerating machine

The present invention relates to a solution heat exchanger used for performing heat exchange between a dilute solution and a concentrated solution in a solution passage of an absorption refrigerating machine. The solution heat exchanger (H) comprises a plate type heat exchanger, and a communication portion (R) communicating between a dilute solution passage and a concentrated solution passage for introducing a portion of a dilute solution into a concentrated solution is provided in the solution heat exchanger (H).

Solution heat exchanger for absorption refrigerating machine

The present invention relates to a plate heat exchanger for simultaneously exchanging heat between two sets of fluids having different temperatures. The plate heat exchanger comprises a heat exchange element ( ) comprising two plates facing each other so as to form a inner sealed space as a passage for a first fluid, and a plate surface of the plate serves as a heat transfer surface, and a fluid flowing along an outer surface of the plate is a second fluid. The plate heat exchanger comprises a heat exchange element ( &prime;) comprising two plates facing each other so as to form a inner sealed space as a passage for a third fluid, and a plate surface of the plate serves as a heat transfer surface, and a fluid flowing along an outer surface of the plate is a fourth fluid. A plurality of the heat exchange elements ( ) and a plurality of the heat exchange elements ( &prime;) are alternately disposed in such a manner that the plate surfaces of the plates are opposed to each other and a predetermined gap is formed between adjacent the heat exchange elements. A communication pipe communicating with the inner spaces of the heat exchange elements ( ) and a communication pipe communicating with the inner spaces of the heat exchange elements ( &prime;) are formed on the plate surfaces of the heat exchange elements ( ) and ( &prime;) and integrally formed with the elements.

Plate type heat exchanger

The present invention relates to a plate type heat exchanger having a heat exchange element composed of two plates for exchanging heat between a fluid flowing inside the heat exchange element and a fluid flowing outside the heat exchange element. In the plate type heat exchanger, the two plates ( ) have a plurality of depressions ( ), and the depressions are brought into contact with and bonded to each other. Peripheral portions of the plates are sealed to form a space in which a fluid flows and constitute a heat exchange element ( ) having opening portions ( ) at both ends thereof. The heat exchange elements ( ) are piled on and bonded to each other so that the opening portions ( ) communicate with each other.

Absorption refrigerator

An absorption refrigerating machine according to the present invention has a system for flowing cooling water in parallel to an absorber and a condenser. The absorption refrigerating machine is constituted such that plate type heat exchangers H , H are used in an absorber A and a condenser C, and the amounts of cooling water distributed to the absorber and the condenser are determined mainly based on fluid resistance of each of the plate type heat exchangers.

A controller for an absorption cold/hot water generating machine, in which a refrigerating cycle is formed by pipe-connecting an evaporator, an absorber, a solution heat exchanger, a low-temperature generator, a condenser, and a high-temperature generator, and the solution level in a header of the high-temperature generator is kept within a prescribed range by controlling the flow rate of the solution fed from the absorber to the high-temperature generator; wherein a solution pump for feeding a solution from the absorber to the high-temperature generator is inverter-driven, and there is provided pressure difference detecting means for detecting a difference in pressure between the high-temperature generator and the absorber; and wherein there is provided control means which controls the solution pump driving frequency of the inverter as a function of a pressure difference between the high-temperature generator and the absorber.

Controller for absorption cold or hot water generating machine

A data processing apparatus having an interface means for fetching a signal from an external device outside the processing apparatus, a CPU connected to the interface means, a data bus, connected to the interface means and the CPU, for exchanging data therebetween, a ROM, connected to the data bus, for storing a character code, and a RAM, connected to the data bus, for storing and reading out the character code, is characterized in that bit image data corresponding to the character code is developed and stored in the RAM by means of the CPU, the data bus, the ROM, and the RAM, and is output to an external device.

Growing community of inventors

Tokyo, Japan

Toshio Matsubara