Noritz Corporation

Takeda Chemical Industries, Inc.

Hiroshi Morimoto

Isuke Imada

Masazumi Watanabe

Mitsuru Kawada

Akihisa Kageyama

Midori Yokoyama

Yasutaka Kuriyama

Naoki Tsuda

Yoshihisa Kitano

Takehito Yokoyama

Yasushi Morita

Yoshifumi Atobe

Haruhiko Tamada

Ichiro Azuma

Kazuaki Kitano

Yuichi Yamamura

Rena Kusachi

Yoshio Nakao

Kazuhisa Sugimura

Keiichiro Iwanami

Toshihiro Kawachi

A heating and hot-water supply apparatus includes a combustion means, a heat exchanger, a circulation passage, a circulation means, a bypass passage, a distribution means, a hot-water supply heat exchanger, a water entry passage, a hot-water supply passage, and a control means. The circulation passage connects an external heating terminal and the heat exchanger. The water entry passage supplies water of an external hot-water supply pipe and an external water supply pipe to the hot-water supply heat exchanger. The control means controls the distribution means to be adaptable to each of a heating operation and a hot-water supply operation. The control means prioritizes the hot-water supply operation when there is a hot-water supply request for warm water use in addition to a heating request, and prioritizes the heating operation when there is a temperature-maintaining request for maintaining a temperature of the hot-water supply pipe in addition to the heating request.

Heating and hot-water supply apparatus

A heating and hot-water supply device includes a combustion means, a heat exchanger, a circulation passage, a circulation means, a bypass passage, a distribution means, a hot-water supply heat exchanger, a water supply passage, a hot-water supply passage, and a control means. The heat exchanger heats a heating heat-medium to a target heat medium temperature. The distribution means distributes the heating heat-medium to the circulation passage and the bypass passage. The control means is capable of adjusting a distribution ratio of the distribution means to be adaptable to a heating operation, a hot-water supply operation, and a simultaneous heating and hot-water supply operation. At the time of transition from the heating operation to the simultaneous heating and hot-water supply operation, in a case where the heating terminal for performing heating is a warm air heater, the control means raises the target heat medium temperature.

Heating and hot-water supply device

A heating and hot water supply system includes: a combustion means; a heat exchanger; a heating terminal; a circulation passage that connects the heat exchanger and the heating terminal; a circulation means; a bypass passage branched from the circulation passage and bypassing the heating terminal; a distribution means for distributing a heating medium to the circulation passage and the bypass passage; a hot water supply heat exchanger for the bypass passage; and a hot water supply passage; wherein the distribution means can adjust the distribution ratio so as to correspond to a heating operation, a hot water supply operation, and a simultaneous heating and hot water supply operation, and when the distribution ratio on the circulation passage side of the distribution means is smaller than a prescribed value during the simultaneous heating and hot water supply operation, the blowing operation of the blower at the heating terminal is prohibited.

Heating and hot water supply system

A heating and hot-water-supply apparatus is provided with: a control unit that performs control on the basis of detection parameters of a plurality of detection means installed at the aforementioned locations and a setting parameter set in an operation unit. The distribution means can adjust the distribution ratio so as to correspond to a heating operation, a hot-water supply operation, and the simultaneous heating and hot-water-supply operation. The control unit prohibits the simultaneous heating and hot-water-supply operation in a case in which the required heating capacity for the hot-water supply operation calculated on the basis of the detection parameters and the setting parameter is equal to or greater than a predetermined standard capacity.

Heating and hot-water-supply apparatus

Provided is a heating and hot water supply device. The heating and hot water supply device includes: a combustion part; a heat exchanger; a circulation passage; a circulation part; a bypass passage; a distribution means for distributing the heating medium to the circulation passage and the bypass passage; a hot water supply heat exchanger; a water supply passage; and a hot water supply passage (). The distribution ratio of the distribution means is adjustable so as to correspond to a heating operation, a hot water supply operation, and the simultaneous heating and hot water supply operation. The heating and hot water supply device includes an operation part, which heats the heating medium to one or more heating terminal setting temperatures and circulates the heating medium, and switches a setting of the one or more heating terminal setting temperatures to be increased by a prescribed temperature during the simultaneous heating and hot water supply operation.

Heating and hot water supply device

When a hot water supply operation is started, a single mode is used in which hot water is output only from a second hot water supply circuit of a water heater, by cut-off of a flow path in a first hot water supply circuit of a space-heating water heater by a cut-off mechanism. When a load imposed by hot water supply by the second hot water supply circuit increases during the hot water supply operation in the single mode, the cut-off mechanism is opened to start hot water output from the first hot water supply circuit and a hot water supply operation in a parallel mode is performed in which hot water is output from both of the first hot water supply circuit and the second hot water supply circuit.

Water heating system including multi-function heat source apparatus

A heating and hot water supplying device includes: a circulation passage that connects a heat exchanger and an external heating terminal; a bypass passage that bypasses the heating terminal by branching from the circulation passage; a hot water supply passage for supplying the hot water heated to a preset hot water supply temperature by the heat exchanger for hot water supply; a control unit that controls operations in which this plurality of units are used; and an operation terminal for performing various operations. A distribution valve is provided in the branching portion of the bypass passage. The distribution valve adjusts the distribution ratio so that each of a heating operation, a hot water supplying operation, and a simultaneous heating and hot water supplying operation is possible. The operation terminal is provided with a prohibit switch to prohibit the simultaneous heating and hot water supplying operation.

Heating and hot water supplying device

In a heating and hot water supply device including a burning means, a first heat exchanger, a circulation passage for circulating a heating thermal medium, a circulation pump, a first bypass passage, a second heat exchanger for hot water supply, a hot water supply passage, a distribution means at a branching portion of the first bypass passage, and a second bypass passage bypassing the second heat exchanger, a flow rate adjustment means for adjusting a bypass flow rate in the second bypass passage is provided. The distribution means is capable of adjusting its distribution ratio for heating, or hot water supply, or simultaneous heating/hot water supply. All passage connection portions on the second heat exchanger were provided on its one side portion.

In a heating and hot water supply device including a burning means, a first heat exchanger, a circulation passage for circulating a heating thermal medium, a circulation pump, a first bypass passage, a second heat exchanger for hot water supply, a hot water supply passage, a second bypass passage bypassing the second heat exchanger, a control unit, and an operating terminal, a distribution means is provided at a branching portion of the first bypass passage and is capable of adjusting its distribution ratio for heating, or hot water supply, or simultaneous heating/hot water supply, a display means of the operating terminal is capable of providing displays corresponding to various types of operation.

A distribution valve controls a distribution ratio of a heat transfer medium between a hot water supply path including a heat exchanger for hot water supply and a beating circulation path through which the heat transfer medium is supplied to a heating terminal. A bypass flow rate control valve controls a bypass ratio which is a ratio of a flow rate of low temperature water introduced into a bypass pipe that bypasses the heat exchanger for hot water supply to a flow rate of low temperature water introduced into a water inlet pipe. The bypass ratio is regulated so that a hot water temperature detected by a temperature sensor reaches a hot water target temperature. During a simultaneous operation of hot water supply and heating, the distribution valve is controlled so that, when a bypass ratio is low, a distribution ratio is higher than when a bypass ratio is high.

Heating and hot water supply apparatus

Novel compounds of the formulae ##STR1## wherein R represents lower alkyl or lower alkoxy, A represents --CH.sub.2 --, --CO-- or ##STR2## n represents an integer of 1 to 8, X represents hydrogen or hydroxyl which may be protected and Y represents hydroxyl which may be protected, and their esters show an excellent action on the lysosomal membranes of cells, and exhibit excellent pharmacological activities such as physiologic host defense control activity, especially immuno-potentiating activity.

Aralkyl carboxylic acid compounds in compositions for potentiating

Aralkyl carboxylic acid compounds

Novel compounds of the formula ##STR1## wherein R represents lower alkyl or lower alkoxy, A represents --CH.sub.2 --, --CO-- or ##STR2## n represents an integer of 1 to 8, X represents hydrogen or hydroxyl which may be protected and Y represents hydroxyl which may be protected, and their esters show an excellent action on the lysosomal membranes of cells, and exhibit excellent pharmacological activities such as physiologic host defense control activity, especially immuno-potentiating activity.

6-Hydroxy-1,4-benzoquinone compounds

The aqueous preparation such as an aqueous solution, a water-in-oil emulsion, in which a water-soluble salt of the quinonyl acid derivative of the formula: ##STR1## [wherein each R is a lower alkoxy group having 1 to 4 carbon atoms or the two R's, taken together, represent a group of --CH.dbd.CH--CH.dbd.CH--; --A--COOH means ##STR2## when both R's are lower alkoxy groups, or --(CH.sub.2).sub.n COOH (wherein n is an integer from 1 to 8) when two R's, taken together, represent a group of --CH.dbd.CH--CH.dbd.CH--] is dissolved in aqueous phase, shows an excellent immunoregulatory activity in animals including human being.

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Hyogo, Japan

Hiroshi Morimoto