WO2008123539A1

WO2008123539A1 - Hot-water supply system having heat recovery passage

Info

Publication number: WO2008123539A1
Application number: PCT/JP2008/056527
Authority: WO
Inventors: Hiroshi Mukaiyama; Masahisa Otake; Yoshiaki Kurosawa; Etsushi Nagae; Haruyuki Yoshida; Eiji Yuasa
Original assignee: Sanyo Electric Co., Ltd.
Priority date: 2007-03-30
Filing date: 2008-03-26
Publication date: 2008-10-16
Also published as: JP2008249247A; JP5129972B2

Abstract

In an ordinary house or other facilities equipped with an air-conditioning system and a hot-water supply system, the heat of a radiator for radiating the heat of a coolant compressed in the compressor of the air-conditioning system is recovered to heat the water reserved in the hot-water tank of the hot-water supply system, thereby to make effective use of the heat to be radiated and to promote the heating promotion effect of the water reserved in the hot-water tank. The hot-water supply system comprises a closed type hot-water tank supplied with the water and kept in a predetermined pressure state. Further comprised are a water heater for heating the water of the hot-water tank by circulating it to a heating device, and a cooling/heating unit having an air conditioning function of a circulating cycle, in which it releases the heat of the coolant compressed by the compressor in the radiator, and in which it evaporates the coolant in the evaporator through an expanding device and returns the same to the compressor. Still further comprised is a heat recovery passage for reserving the water heated by the heat of the coolant passing through the radiator, in the hot-water tank so that the heat to be radiated by the radiator may be recovered by the hot-water supply system.

Description

明細書熱回収路付き給湯装置技術分野 Technical specification

本発明は、上水道が減圧弁を介して底部に供給され所定の圧力状態に維持された密閉式である給湯タンクを備え、この給湯タンクの水を加熱装置へ循環して加熱し、前記給湯タンクに溜めた湯を利用場所へ供給する給湯装置に関する。背景技術 The present invention comprises a sealed hot water supply tank in which a water supply is supplied to the bottom through a pressure reducing valve and maintained at a predetermined pressure state, and the water in the hot water supply tank is circulated and heated to a heating device. The present invention relates to a hot water supply device that supplies hot water accumulated in the area to a place of use. Background art

上水道が減圧弁を介して底部に供給され所定の圧力状態に維持された密閉式である給湯タンクを備え、この給湯タンクの水を加熱装置へ循環して加熱し、前記給湯タンクに溜めた湯を給湯タンクの上部から利用場所へ供給する給湯装置において、前記加熱装置が二酸化炭素冷媒を圧縮機で圧縮する冷凍装置の二酸化炭素冷媒ガスを冷却する冷媒ガス熱交換器で構成され、前記冷媒ガス熱交換器には前記給湯タンクの底部の低温水が流入し前記二酸化炭素冷媒ガスによって加熱された高温水（湯）が前記給湯タンクの上部へ戻る高温水（湯）形成路が設けられたものがある。（例えば、特許文献 1参照）。 The water supply tank is provided with a sealed hot water supply tank that is supplied to the bottom through a pressure reducing valve and maintained at a predetermined pressure state, and the water in the hot water supply tank is circulated and heated to a heating device. In the hot water supply apparatus that supplies the hot water from the upper part of the hot water tank to the user's place, the heating device is composed of a refrigerant gas heat exchanger that cools the carbon dioxide refrigerant gas of the refrigeration apparatus that compresses the carbon dioxide refrigerant with a compressor, and the refrigerant The gas heat exchanger is provided with a high-temperature water (hot water) formation path in which low-temperature water at the bottom of the hot water tank flows in and high-temperature water (hot water) heated by the carbon dioxide refrigerant gas returns to the top of the hot water tank. There is something. (For example, see Patent Document 1).

[特許文献 1 ] 特開 2 0 0 2 - 1 3 9 2 5 8号公報発明の開示 [Patent Document 1] Japanese Patent Laid-Open No. 2 0 0 2-1 3 9 2 5 8 Disclosure of Invention

特許文献 1のような給湯装置が設置された一般家庭やその他の施設において、一般的にそれらの建物の室内冷房や暖房を行なう冷凍サイクルの空気調和装置（又は空気調和機）やその他の特定部分を冷却又は加熱する冷凍サイクルの冷凍装置（これらを総称して冷却加熱ユニットと称する）を備えている。この冷却加熱ユニットは、圧縮機で圧縮した冷媒の熱を放熱器で放熱し膨張弁を通つて蒸発器で蒸発させて再び前記圧縮機へ帰還する循環サイクルを構成し、所定の室内の冷房を行なう場合は、前記蒸発器で冷却した空気を送風機で所定の室内へ供給させるか、又は前記蒸発器で冷却した水等のブラインを冷房用熱交換器へ循環させ、この冷房用熱交換器で冷却した空気を所定の室内へ供給させることにより、所定の室内の冷房を行なうことができる。この場合、圧縮機で圧縮した冷媒の熱を放熱する前記放熱器の熱は、送風機によってそのまま室外の空気中へ放散されるのが一般的である。 In general households and other facilities where a hot water supply device such as Patent Document 1 is installed, a refrigeration cycle that generally cools and heats those buildings Air conditioner (or air conditioner) and other refrigeration cycle refrigeration equipment that cools or heats specific parts (collectively referred to as a cooling and heating unit). This cooling and heating unit constitutes a circulation cycle in which the heat of the refrigerant compressed by the compressor is radiated by the radiator, evaporated through the expansion valve by the evaporator, and returned to the compressor again. When performing, the air cooled by the evaporator is supplied to a predetermined room by a blower, or the brine cooled by the evaporator is circulated to a cooling heat exchanger, and the cooling heat exchanger By supplying the air cooled in step 4 to the predetermined room, the predetermined room can be cooled. In this case, the heat of the radiator that radiates the heat of the refrigerant compressed by the compressor is generally dissipated directly into the outdoor air by the blower.

本発明は、このように冷却加熱ュニッ卜と給湯装置が設置された一般家庭やその他の施設において、冷却加熱ュニッ卜の圧縮機で圧縮した冷媒の熱を放熱する放熱器の熱を回収して、給湯装置の給湯タンクに溜めた水を加熱する構成によって、放散される熱の有効利用を図ると共に、給湯タンクに溜めた水の加熱促進効果も図るものである。 The present invention recovers the heat of a radiator that dissipates the heat of the refrigerant compressed by the compressor of the cooling / heating unit in a general household or other facilities where the cooling / heating unit and the hot water supply apparatus are installed. In addition, the structure in which the water stored in the hot water tank of the hot water supply apparatus is heated makes it possible to effectively use the heat dissipated and to promote the heating of the water stored in the hot water tank.

第 1発明の熱回収路付き給湯装置は、上水道が底部から供給され内部の水圧が所定の圧力状態に維持された密閉式である給湯タンクと、この給湯タンク内の水を加熱装置へ循環して加熱し、前記給湯タンクに溜めた湯を給湯タンクの上部から利用場所へ供給するようになっている給湯装置と、圧縮機で圧縮した後の冷媒の熱を放熱器で放熱し膨張装置を通つて蒸発器で蒸発させて再び前記圧縮機へ帰還する循環サイクルを構成し前記蒸発器で冷却運転を可能とした冷却加熱ユニットを備え、前記放熱器で放熱される冷媒の熱を前記給湯装置で回収するように、前記放熱器を通る冷媒の熱で加熱された水を前記給湯タンクに供給する熱回収路を備えたことを特徴とする。 A hot water supply apparatus with a heat recovery path according to a first aspect of the invention is a sealed hot water supply tank in which water supply is supplied from the bottom and the internal water pressure is maintained at a predetermined pressure state, and water in the hot water supply tank is circulated to the heating apparatus. The hot water stored in the hot water tank is supplied from the upper part of the hot water tank to the place of use, and the heat of the refrigerant after being compressed by the compressor is dissipated by the heat radiator. A cooling and heating unit that forms a circulation cycle that evaporates through the evaporator and returns to the compressor again, and enables the cooling operation by the evaporator, and heats the refrigerant radiated by the heat radiator. A heat recovery path for supplying water heated by the heat of the refrigerant passing through the radiator to the hot water supply tank so as to be recovered by an apparatus It is provided with.

第 2発明の熱回収路付き給湯装置は、第 1発明において、前記熱回収路は、前記給湯タンク下部の低温の水を加熱して前記給湯タンクの中温の水もしくはこの中温の水の近傍に供給することを特徴とする。 A hot water supply apparatus with a heat recovery path according to a second aspect of the present invention is the hot water supply apparatus according to the first aspect, wherein the heat recovery path heats the low-temperature water at the lower part of the hot water supply tank, It is characterized by supplying.

第 3発明の熱回収路付き給湯装置は、上水道が底部から供給され内部の水圧が所定の圧力状態に維持された密閉式である給湯タンクと、この給湯タンク内の水を加熱装置へ循環して加熱しこの加熱された高温水 (湯）を給湯タンクの上部に設けた上部入口管から前記給湯タンク内へ戻し、給湯タンク内の高温水（湯）を給湯タンクの上部から取り出して利用場所へ供給するようになっている給湯装置と、圧縮機で圧縮した後の冷媒の熱を放熱器で放熱し膨張装置を通って蒸発器で蒸発させて再び前記圧縮機へ帰還する循環サイクルを構成し前記蒸発器で冷却運転を可能とした冷却加熱ュニッ卜と、前記放熱器で放熱される冷媒の熱を前記給湯装置で回収するように、前記放熱器を通る冷媒の熱で加熱された水を前記給湯タンクに供給する熱回収路と、前記給湯タンクの底部から前記熱回収路へ低温水を供給する流入配管と、前記熱回収路で加熱された温水を前記給湯タンクの前記上部入口管と底部との間に位置する中間入口管へ戻す流出配管を備え、前記流出配管を通る温水を前記上部入口管または前記中間入口管のいずれかに選択供給するように制御する制御弁を設けたことを特徴とする。 A hot water supply apparatus with a heat recovery path according to a third aspect of the invention is a sealed hot water supply tank in which water supply is supplied from the bottom and the internal water pressure is maintained at a predetermined pressure state, and water in the hot water supply tank is circulated to the heating apparatus. The heated hot water (hot water) is returned to the hot water tank through the upper inlet pipe provided at the upper part of the hot water tank, and the hot water (hot water) in the hot water tank is taken out from the upper part of the hot water tank. A hot water supply device designed to be supplied to the compressor and a circulation cycle in which the heat of the refrigerant after being compressed by the compressor is radiated by the radiator, evaporated through the expansion device by the evaporator, and returned to the compressor again. A cooling and heating unit that enables the evaporator to perform a cooling operation, and the heat of the refrigerant radiated by the radiator is heated by the heat of the refrigerant that passes through the radiator so that the heat of the refrigerant is recovered by the water heater. Water is supplied to the hot water tank A heat recovery path for supplying water, an inflow pipe for supplying low-temperature water from the bottom of the hot water supply tank to the heat recovery path, and hot water heated in the heat recovery path between the upper inlet pipe and the bottom of the hot water supply tank An outflow pipe that returns to the intermediate inlet pipe located between them, and a control valve that controls to selectively supply hot water passing through the outflow pipe to either the upper inlet pipe or the intermediate inlet pipe is provided And

第 4発明の熱回収路付き給湯装置は、上水道が底部から供給され内部の水圧が所定の圧力状態に維持された密閉式である給湯タンクと、この給湯タンク内の水を加熱装置へ循環して加熱しこの加熱された高温水 (湯）を給湯タンクの上部に設けた上部入口管から前記給湯タンク内へ戻し、給湯タンク内の高温水（湯）を給湯タンクの上部から取り出して利用場所へ供給するようになっている給湯装置と、圧縮機で圧縮した後の冷媒の熱を放熱器で放熱し膨張装置を通って蒸発器で蒸発させて再び前記圧縮機へ帰還する循環サイクルを構成し前記蒸発器で冷却運転を可能とした冷却加熱ュニッ卜と、前記放熱器で放熱される冷媒の熱を前記給湯装置で回収するように、前記放熱器を通る冷媒の熱で加熱された水を前記給湯タンクに供給する熱回収路と、前記給湯タンクの底部から前記熱回収路へ低温水を供給する流入配管と、前記熱回収路で加熱された温水を前記給湯タンクの前記上部入口管と底部との間に位置する中間入口管へ戻す流出配管と、前記流出配管を通る温水を前記上部入口管または前記中間入口管のいずれかに選択供給するように制御する制御弁と、少なくとも前記給湯タンク内の上部及び中間部の水温を検出する水温検出部を設け、前記水温検出部の検出に基づき前記制御弁を制御して前記流出配管を通る温水の流れを前記上部入口管または前記中間入口管のいずれかへ切り替え制御することを特徴とする。 A hot water supply apparatus with a heat recovery path according to a fourth aspect of the present invention is a sealed hot water supply tank in which water supply is supplied from the bottom and the internal water pressure is maintained at a predetermined pressure state, and water in the hot water supply tank is circulated to the heating apparatus. The heated hot water (hot water) is returned to the hot water tank through the upper inlet pipe provided at the upper part of the hot water tank, and the hot water (hot water) in the hot water tank is taken out from the upper part of the hot water tank. A hot water supply system designed to be supplied to the place of use, and a circulation cycle in which the heat of the refrigerant compressed by the compressor is radiated by the radiator, evaporated through the expansion device by the evaporator, and returned to the compressor again. And a heating / cooling unit that enables the evaporator to perform a cooling operation, and the heat of the refrigerant radiated by the radiator is recovered by the heat of the refrigerant that passes through the radiator so that the heat of the refrigerant is recovered by the water heater. A heat recovery path for supplying the heated water to the hot water tank, an inflow pipe for supplying low temperature water from the bottom of the hot water tank to the heat recovery path, and hot water heated in the heat recovery path for the hot water tank. Control is performed to selectively supply either the upper inlet pipe or the intermediate inlet pipe with the outflow pipe returning to the intermediate inlet pipe located between the upper inlet pipe and the bottom, and the hot water passing through the outlet pipe. A control valve and at least said supply A water temperature detection part for detecting the water temperature of the upper part and the middle part in the hot water tank is provided, and the control valve is controlled based on the detection of the water temperature detection part so that the flow of the hot water passing through the outflow pipe is the upper inlet pipe or the It is characterized by switching control to either the intermediate inlet pipe.

第 5発明の熱回収路付き給湯装置は、上水道が底部から供給され内部の水圧が所定の圧力状態に維持された密閉式である給湯タンクと、この給湯タンク内の水を加熱装置へ循環して加熱しこの加熱された高温水 (湯）を給湯タンクの上部に設けた上部入口管から前記給湯タンク内へ戻し、給湯タンク内の高温水（湯）を給湯タンクの上部から取り出して利用場所へ供給するようになっている給湯装置と、圧縮機で圧縮した後の冷媒の熱を放熱器で放熱し膨張装置を通って蒸発器で蒸発させて再び前記圧縮機へ帰還する循環サイクルを構成し前記蒸発器で冷却運転を可能とした冷却加熱ユニットと、前記放熱器には前放熱器を通る冷媒の熱を奪う水が通る熱回収路と、前記給湯タンクの底部の低温水が前記熱回収路へ流入配管から流入し前記熱回収路で加熱された温水が前記給湯夕ンクの中間入口管へ流出配管から戻るようにポンプを備えた循環水路を構成し、前記流出配管を通る温水を前記上部入口管または前記中間入口管のいずれかに選択供給するように制御する制御弁と、少なくとも前記給湯タンク内の上部、中間部及び下部の水温を検出する水温検出部を設け、前記水温検出部の検出に基づき前記制御弁を制御して前記流出配管を通る温水の流れを前記上部入口管または前記中間入口管のいずれかへ切り替え制御する制御要素と、前記冷却加熱ユニットは、前記圧縮機で圧縮され冷媒の熱を放熱させるための第 2の放熱器要素を備え、前記冷却加熱ュニッ卜の運転中において前記水温検出部の検出に基づき前記循環水路を水が循環する状態と循環しない状態とに制御する制御要素を備えると共に、前記水が循環していないときに前記第 2の放熱器要素が有効に作用することができるように成すことを特徴とする。 A hot water supply apparatus with a heat recovery path according to a fifth aspect of the invention is a sealed hot water supply tank in which water supply is supplied from the bottom and the internal water pressure is maintained at a predetermined pressure state, and water in the hot water supply tank is circulated to the heating apparatus. The heated hot water (hot water) is returned to the hot water tank through the upper inlet pipe provided at the upper part of the hot water tank, and the hot water (hot water) in the hot water tank is taken out from the upper part of the hot water tank. A hot water supply device designed to be supplied to the compressor and a circulation cycle in which the heat of the refrigerant after being compressed by the compressor is radiated by the radiator, evaporated through the expansion device by the evaporator, and returned to the compressor again. A cooling and heating unit that enables cooling operation with the evaporator, a heat recovery path through which water deprives the heat of the refrigerant that passes through the front radiator, and low-temperature water at the bottom of the hot water supply tank. Flow from inflow piping to heat recovery path The hot water that has entered and heated in the heat recovery path is A control circuit that controls the supply of hot water passing through the outlet pipe to either the upper inlet pipe or the intermediate inlet pipe by constructing a circulating water channel with a pump so as to return from the outlet pipe to the intermediate inlet pipe And a water temperature detector that detects at least the upper, middle, and lower water temperatures in the hot water tank, and controls the control valve based on the detection of the water temperature detector to flow the hot water through the outflow pipe A control element that controls switching to either the upper inlet pipe or the intermediate inlet pipe, and the cooling and heating unit includes a second radiator element that is compressed by the compressor and dissipates heat of the refrigerant, A control element is provided for controlling the circulating water channel in a circulating state and a non-circulating state based on the detection of the water temperature detecting unit during the operation of the cooling and heating unit. Water and wherein said second radiator element be made so that it can act enabled when not circulating.

第 6発明の熱回収路付き給湯装置は、第 1乃至第 5発明のいずれかにおいて、前記加熱装置が稼動状態のときは前記熱回収路を水が循環しないように閉じる開閉弁を設けたことを特徴とする。 A hot water supply apparatus with a heat recovery path according to a sixth aspect of the present invention is the open / close valve according to any one of the first to fifth aspects, wherein the heat recovery path is closed so that water does not circulate when the heating apparatus is in operation. Is provided.

第 7発明の熱回収路付き給湯装置は、第 4発明または第 5発明において、前記熱回収路を開閉する開閉弁を設け、前記給湯タンクの下部の水温が、所定温度より低い低温度状態では前記開閉弁を開き所定温度状態では前記開閉弁を閉じるように制御する制御要素を備えたことを特徴とする。 A hot water supply apparatus with a heat recovery path according to a seventh aspect of the present invention is the hot water supply apparatus according to the fourth or fifth aspect, wherein an on-off valve for opening and closing the heat recovery path is provided, A control element is provided that controls to open the on-off valve in a state and close the on-off valve in a predetermined temperature state.

第 8発明の熱回収路付き給湯装置は、第 5乃至第 7発明のいずれかにおいて、前記第 2の放熱器要素は、前記熱回収路に並列に前記流入配管と前記流出配管に接続された副熱交換器であり、前記給湯タンクの下部の水温が所定温度より低い低温度状態では前記副熱交換器への水の循環を止め、前記給湯タンクの下部の水温が所定温度より高いときは前記副熱交換器への水の循環を行なう動作をすることを特徴とする。 A water heater with a heat recovery path according to an eighth aspect of the present invention is the hot water heater according to any one of the fifth to seventh aspects, wherein the second radiator element is connected to the inlet pipe and the outlet pipe in parallel with the heat recovery path. The auxiliary heat exchanger is configured to stop circulation of water to the auxiliary heat exchanger when the water temperature at the lower part of the hot water tank is lower than a predetermined temperature, and the water temperature at the lower part of the hot water tank is higher than the predetermined temperature. When said vice It is characterized by the operation of circulating water to the heat exchanger.

第 9発明の熱回収路付き給湯装置は、上水道が底部から供給され内部の水圧が所定の圧力状態に維持された密閉式である給湯タンクと、この給湯タンク内の水を加熱装置へ循環して加熱しこの加熱された高温水 (湯）を給湯タンクの上部に設けた上部入口管から前記給湯タンク内へ戻し、給湯タンク内の高温水（湯）を給湯タンクの上部から取り出して利用場所へ供給するようになっている給湯装置と、圧縮機で圧縮した冷媒を第 1熱交換器 4 4と膨張装置を通つて第 2熱交換器 2 4 0で蒸発させて再び前記圧縮機へ帰還する冷房運転サイクル、及び前記圧縮機で圧縮した冷媒を前記第 2熱交換器と膨張装置を通って前記第 1熱交換器で蒸発させて再び前記圧縮機へ帰還する暖房運転サイクルとを構成するヒートポンプ式冷却加熱ュニットを備え、前記第 1熱交換器 4 4に並列に前記冷媒が通る冷媒管と前記給湯タンクに溜めた水（又は湯）が通る水路管が熱交換状態にある第 3熱交換器 2 2 0を設け、前記暖房運転サイクルにおいて、暖房運転開始から所定時間、前記第 1熱交換器 4 4と第 3熱交換器 2 2 0に冷媒が流れ、その後、前記第 3熱交換器 2 2 0へ冷媒が流れないように制御する開閉弁 4 1を設けたことを特徴とする。第 1 0発明の熱回収路付き給湯装置は、上水道が底部から供給され内部の水圧が所定の圧力状態に維持された密閉式である給湯タンクと、この給湯タンク内の水を加熱装置へ循環して加熱しこの加熱された高温水 (湯）を給湯タンクの上部に設けた上部入口管から前記給湯タンク内へ戻し、給湯タンク内の高温水（湯）を給湯タンクの上部から取り出して利用場所へ供給するようになっている給湯装置と、圧縮機で圧縮した冷媒を第 1熱交換器 4 4と膨張装置 2 3を通って第 2熱交換器 2 4 0で蒸発させて再び前記圧縮機へ帰還する冷房運転サイクル、及び前記圧縮機で圧縮した冷媒を前記第 2熱交換器 2 4 0と膨張装置 2 3を通って前記第 1熱交換器 4 4で蒸発させて再び前記圧縮機へ帰還する暖房運転サイクルとを構成するヒートポンプ式冷却加熱ュニットを備え、前記第 1熱交換器 4 4に並列に前記冷媒が通る冷媒管と前記給湯タンクに溜めた水 (又は湯）が通る水路管が熱交換状態にある第 3熱交換器 2 2 0を設け、前記第 3熱交換器 2 2 0の冷媒の流れを制御する開閉弁 4 1と、前記第 1熱交換器 4 4の冷媒の流れを制御するもう 1つの開閉弁 4 3を設け、暖房運転開始から所定時間、前記第 3熱交換器 2 2 0のみに冷媒が流れるように、前記後者のもう 1つの開閉弁 4 3を閉じ前者の開閉弁 4 1を開き、その後、前記後者のもう 1つの開閉弁 4 3を開き、前者の開閉弁 4 1を閉じることを特徴とする。 A hot water supply apparatus with a heat recovery path according to a ninth aspect of the present invention is a sealed hot water supply tank in which water supply is supplied from the bottom and the internal water pressure is maintained at a predetermined pressure state, and water in the hot water supply tank is circulated to the heating apparatus. The heated hot water (hot water) is returned to the hot water tank through the upper inlet pipe provided at the upper part of the hot water tank, and the hot water (hot water) in the hot water tank is taken out from the upper part of the hot water tank. The hot water supply device that is supplied to the compressor and the refrigerant compressed by the compressor are evaporated by the second heat exchanger 240 through the first heat exchanger 44 and the expansion device, and then the compressor again. And a cooling operation cycle in which the refrigerant compressed by the compressor evaporates in the first heat exchanger through the second heat exchanger and the expansion device and returns to the compressor again. Heat pump type cooling and heating unit A third heat exchanger 2 2 in which a refrigerant pipe through which the refrigerant passes and a water pipe through which water (or hot water) stored in the hot water supply tank passes in parallel with the first heat exchanger 44 In the heating operation cycle, the refrigerant flows into the first heat exchanger 44 and the third heat exchanger 2 20 for a predetermined time from the start of the heating operation, and then the third heat exchanger 2 2 An on-off valve 41 is provided to control so that the coolant does not flow to 0. A hot water supply apparatus with a heat recovery path of a tenth aspect of the invention is a sealed hot water supply tank in which water supply is supplied from the bottom and the internal water pressure is maintained at a predetermined pressure state, and the water in the hot water supply tank is heated. The heated hot water (hot water) is returned to the hot water tank through the upper inlet pipe provided in the upper part of the hot water tank, and the hot water (hot water) in the hot water tank is taken out from the upper part of the hot water tank. The hot water supply device that is to be supplied to the place of use and the refrigerant compressed by the compressor are vaporized in the second heat exchanger 2 40 through the first heat exchanger 44 and expansion device 23. Cooling operation cycle for returning to the compressor again, and the compressor A heat pump that constitutes a heating operation cycle in which the refrigerant compressed in step evaporates in the first heat exchanger 44 after passing through the second heat exchanger 240 and the expansion device 23 and returns to the compressor again. Third heat exchange in which a refrigerant pipe through which the refrigerant passes in parallel with the first heat exchanger 44 and a water pipe through which water (or hot water) accumulated in the hot water tank passes is in a heat exchange state. An on-off valve 41 for controlling the refrigerant flow of the third heat exchanger 2 20, and another on-off valve 4 for controlling the refrigerant flow of the first heat exchanger 4 4. 3 and the latter on-off valve 4 3 is closed and the former on-off valve 4 1 is opened so that the refrigerant flows only to the third heat exchanger 2 2 0 for a predetermined time from the start of heating operation. Thereafter, the latter other on-off valve 43 is opened, and the former on-off valve 41 is closed.

第 1 1発明の熱回収路付き給湯装置は、第 1乃至第 1 0発明のいずれかにおいて、前記加熱装置が二酸化炭素冷媒を圧縮機で圧縮する冷凍装置の二酸化炭素冷媒ガスを冷却する冷媒ガス熱交換器で構成され、前記冷却加熱ユニットの冷媒が H F C等の凝縮性冷媒で構成され、前記冷媒ガス熱交換器には前記給湯タンクの底部の低温水が流入し前記二酸化炭素冷媒ガスによって加熱された高温水（湯）が前記給湯タンクの上部へ戻る高温水（湯）形成路が設けられたことを特徴とする。 A hot water supply apparatus with a heat recovery path according to a first aspect of the present invention is the refrigerant according to any one of the first to the tenth aspects, wherein the heating device cools the carbon dioxide refrigerant gas of a refrigeration apparatus in which the carbon dioxide refrigerant is compressed by a compressor. The refrigerant of the cooling and heating unit is composed of a condensable refrigerant such as HFC, and low-temperature water at the bottom of the hot water supply tank flows into the refrigerant gas heat exchanger, and the carbon dioxide refrigerant gas A high-temperature water (hot water) formation path is provided in which the high-temperature water (hot water) heated by the water returns to the upper part of the hot water supply tank.

第 1発明では、給湯タンクは、上水道が減圧弁を介して底部に供給されて、内部が所定の圧力状態に維持される密閉式であるため、給湯タンク内の下部から上水道（例えば 1 5 °C程度の水）がそのまま流入する。このため、下部の温度は低く、上部の温度が高い状態になる。この上部の温度が高い湯が洗面台の蛇口や風呂等の利用場所へ供給されて使用され、使用された湯（水）の不足分が減圧弁を介して上水道が底部から補給されることとなる。この給湯タンク内へその下部から補給された水の温度も高い温度（例えば 8 0 °C〜9 0 °C) に上昇させるためには、加熱装置を運転する必要があるが、いずれも加熱装置の運転コス卜がアップする。そこで、本発明の熱回収路内に給湯タンクの下部の低温水を循環して加熱（例えば 5 0で程度に加熱）することにより、冷却加熱ュニッ卜の放熱器で放熱される熱の有効利用によって、給湯タンクに溜めた水の加熱促進効果を図ることができるものとなる。 In the first invention, the hot water supply tank is a sealed type in which the water supply is supplied to the bottom via the pressure reducing valve and the inside is maintained at a predetermined pressure state. Water of about 5 ° C flows in as it is. For this reason, the lower temperature is low and the upper temperature is high. The hot water at the top is supplied to the washbasin faucet, bath, etc., and used, and the shortage of used water (water) is supplied from the bottom through the pressure reducing valve. It will be. The water supplied from the bottom into this hot water tank In order to raise the temperature to a high temperature (for example, 80 ° C. to 90 ° C.), it is necessary to operate the heating device, but both increase the operating cost of the heating device. Therefore, the low-temperature water in the lower part of the hot water tank is circulated in the heat recovery path of the present invention and heated (for example, heated to about 50), thereby effectively using the heat radiated by the radiator of the cooling / heating unit. As a result, the effect of promoting the heating of the water stored in the hot water tank can be achieved.

第 2発明も第 1の発明の効果と同様に、空気調和装置の放熱器で放熱される熱の有効利用によって、給湯タンクの下部に溜めた水を加熱して、給湯夕ンクの中温の水領域に戻すことにより、この中温領域とその下方領域の水の加熱促進効果を図ることができるため、温度の低い下部領域の水温上昇に寄与して、上部の水温低下を起こさせず、給湯タンクから所定の高温水を洗面台の蛇口や風呂等の利用場所へ供給できる好ましいものとなる。 Similarly to the effect of the first invention, the second invention also heats the water stored in the lower part of the hot water tank by the effective use of the heat radiated by the radiator of the air conditioner, so that the medium temperature water of the hot water tank is heated. By returning to the area, it is possible to promote the heating of the water in the intermediate temperature area and the area below it. This contributes to an increase in the water temperature in the lower temperature area, and does not cause a decrease in the upper water temperature. From the above, it is preferable that predetermined high-temperature water can be supplied to a use place such as a faucet of a wash basin or a bath.

第 3発明では、第 1発明または第 2発明の効果に加えて、熱回収路で加熱された温水を給湯タンクの中間入口管へ戻す流出配管を備え、この流出配管を通る温水を給湯タンクの上部に設けた上部入口管または中間入口管のいずれかに供給するように制御する制御弁を設けているため、給湯タンク内の上部の水温が低い場合は、熱回収路で加熱された温水を上部入口管から給湯タンク内へ戻し、給湯タンク内の上部の水温が高い場合は、熱回収路で加熱された温水を中間入口管から給湯タンク内へ戻すように制御できる。このため、給湯タンク内の上部の温度が所定の温度、例えば 5 0でよりも低い場合は、熱回収路で加熱された中温度（例えば 5 5 °C程度）の水（湯）の供給によって、給湯タンク内の上部の温度上昇を促進して、速く給湯タンク内の上部の温度を上昇させることに寄与できるものとなる。また、給湯タンク内の上部の温度が所定の温度 (例えば 9 0 °C ) 以上になっている場合は、給湯タンク内の上部の高温が低下しないように、中間入口管から給湯タンク内へ戻すように制御できるため、給湯タンク内の下側の水温上昇に寄与し、中温の湯の要求に対しては、上部の高温の湯を残したままで対応することができるものである。 In the third invention, in addition to the effects of the first invention or the second invention, an outflow pipe for returning the hot water heated in the heat recovery path to the intermediate inlet pipe of the hot water tank is provided, and the hot water passing through the outflow pipe is supplied to the hot water tank. Since a control valve is provided to control the supply to either the upper inlet pipe or the intermediate inlet pipe provided in the upper part, if the water temperature in the upper part of the hot water supply tank is low, the hot water heated in the heat recovery path is used. When the water temperature in the upper part of the hot water tank is high, the hot water heated in the heat recovery path can be controlled to return from the intermediate inlet pipe to the hot water tank. For this reason, when the temperature in the upper part of the hot water supply tank is lower than a predetermined temperature, for example, 50, water (hot water) of medium temperature (for example, about 55 ° C) heated in the heat recovery path. By supplying, the temperature rise in the upper part of the hot water tank can be promoted, and the temperature in the upper part of the hot water tank can be quickly increased. In addition, the temperature in the upper part of the hot water tank (For example, 90 ° C) If the temperature is higher than the upper temperature in the hot water tank, it can be controlled to return from the intermediate inlet pipe to the hot water tank so that the upper temperature does not decrease. Therefore, it is possible to respond to the demand for medium-temperature hot water while leaving the hot water at the top.

第 4発明では、第 1発明または第 2発明の効果に加えて、給湯タンク内の水温を検出する水温検出部の検出に基づき、制御弁を制御して熱回収路で加熱された温水の流れを、上部入口管または中間入口管のいずれかへ切り替え制御する。このため、給湯タンク内の上部の水温が所定の温度、例えば 5 0 °Cよりも低い場合は、熱回収路で加熱された温水を上部入口管から給湯タンク内へ戻して、給湯タンク内の上部の温度上昇を促進して、速く給湯タンク内の上部の温度を上昇させることに寄与できるものとなる。また、給湯タンク内の上部の水温が高い場合は、例えば所定の温度（例えば 9 0 °C) 以上のときは、熱回収路で加熱された温水を中間入口管から給湯タンク内へ戻すようにして、給湯タンク内の上部の高温が低下しないようにし、給湯タンク内の下部の水温上昇に寄与する。このように、給湯タンク内の水温に応じて、熱回収路で加熱された温水を給湯タンクの上部に戻すか中間部に戻すかのきめ細かい制御を行えるため、温度が高い湯の確保ができるものである。 In the fourth invention, in addition to the effects of the first invention or the second invention, the hot water heated in the heat collection path by controlling the control valve based on the detection of the water temperature detecting section for detecting the water temperature in the hot water tank. Switch the flow to either the upper inlet pipe or the intermediate inlet pipe. For this reason, when the temperature of the upper water in the hot water tank is lower than a predetermined temperature, for example, 50 ° C, the hot water heated in the heat recovery path is returned to the hot water tank from the upper inlet pipe, The temperature rise of the upper part of the hot water can be promoted, and the temperature of the upper part of the hot water tank can be increased quickly. If the water temperature in the upper part of the hot water tank is high, for example, if the temperature is higher than a predetermined temperature (for example, 90 ° C), the hot water heated in the heat recovery path is returned from the intermediate inlet pipe to the hot water tank. Therefore, the high temperature in the upper part of the hot water tank is not lowered, which contributes to an increase in the water temperature in the lower part of the hot water tank. In this way, according to the water temperature in the hot water supply tank, it is possible to finely control whether the hot water heated in the heat recovery path is returned to the upper part of the hot water supply tank or returned to the intermediate part, so hot water with a high temperature can be secured. Is.

第 5発明では、第 1発明または第 2発明の効果に加えて、給湯タンク内の上部、中間部及び下部の水温を検出する水温検出部の検出に基づき、制御弁を制御して熱回収路で加熱された温水の流れを、上部入口管または中間入口管のいずれかへ切り替え制御する。このため、給湯タンク内の上部の水温が所定の温度、例えば 5 0 °Cよりも低い場合は、熱回収路で加熱された温水を上部入口管から給湯タンク内へ戻して、給湯タンク内の上部の温度上昇を促進して、速く給湯タンク内の上部の温度を上昇させることに寄与できるものとなる。また、給湯タンク内の上部の水温が高い場合は、例えば所定の温度（例えば 9 0 °C) 以上のときは、熱回収路で加熱された温水を中間入口管から給湯タンク内へ戻すようにして、給湯タンク内の上部の高温が低下しないようにし、給湯タンク内の下部の水温上昇に寄与する。更に、給湯タンク内の下部の水温が所定温度 (例えば 5 5 °C) 以上に上昇している場合は、熱回収路で加熱された温水の給湯タンクへの供給停止とするように制御できるものである。このように、給湯タンク内の上部の水温のみならず、給湯タンク内の中間部及び下部の水温に応じて、熱回収路で加熱された温水を給湯タンクの上部に戻すか中間部に戻すかの制御と、熱回収路で加熱された温水の給湯タンクへの供給停止制御を行えるため、温度が高い湯を給湯タンク内に溜めることができるものとなる。また、給湯タンクの下部の水温が所定温度より高いときは、この高い温度の湯が放熱器へ循環することによる放熱器の放熱効果の低下を防止すると共に、第 2放熱器要素によって放熱器による冷媒の熱の放熱効果を促進して、冷却加熱ユニットによる冷却効果を良好な状態に維持できるものとなる。 In the fifth invention, in addition to the effects of the first invention or the second invention, the heat recovery path is controlled by controlling the control valve based on the detection of the water temperature detection unit for detecting the water temperature of the upper, middle and lower parts in the hot water tank. The flow of hot water heated in step 1 is switched to either the upper inlet pipe or the intermediate inlet pipe. For this reason, when the water temperature in the upper part of the hot water tank is lower than a predetermined temperature, for example, 50 ° C, the hot water heated in the heat recovery path is returned from the upper inlet pipe to the hot water tank. The temperature rise in the upper part of the inside can be promoted, and the temperature of the upper part in the hot water tank can be increased quickly. If the water temperature in the upper part of the hot water tank is high, for example, if the temperature is higher than a predetermined temperature (eg 90 ° C), the hot water heated in the heat collection path is returned from the intermediate inlet pipe to the hot water tank. Thus, the high temperature in the upper part of the hot water tank is not lowered, and the water temperature in the lower part of the hot water tank is increased. Furthermore, when the water temperature in the lower part of the hot water tank rises above a predetermined temperature (for example, 55 ° C), it can be controlled to stop supplying hot water heated in the heat recovery path to the hot water tank. Is. In this way, the hot water heated in the heat recovery path is returned to the upper part of the hot water supply tank or returned to the intermediate part depending on not only the upper water temperature in the hot water supply tank but also the intermediate and lower water temperatures in the hot water supply tank. And control of stopping the supply of hot water heated in the heat recovery path to the hot water supply tank, hot water having a high temperature can be stored in the hot water supply tank. When the water temperature in the lower part of the hot water tank is higher than the specified temperature, this high temperature hot water is circulated to the radiator to prevent the heat dissipation effect of the radiator from deteriorating, and the heat radiator The heat radiation effect of the refrigerant due to the heat is promoted, and the cooling effect by the cooling and heating unit can be maintained in a good state.

第 6発明では、第 1乃至第 5発明の効果に加えて、加熱装置が稼動状態のときは熱回収路を水が循環しないようにするため、加熱装置による加熱を優先して、給湯タンクの上部に温度の高い湯を速く貯蔵することができるようになる。 In the sixth invention, in addition to the effects of the first to fifth inventions, in order to prevent water from circulating through the heat recovery path when the heating device is in operation, priority is given to heating by the heating device, and the hot water tank It will be possible to quickly store hot water at the top of the hot spring.

第 7発明では、第 4発明または第 5発明の効果に加えて、水温検出部の検出に基づき、給湯タンクの下部の水温が所定温度より低い低温度状態では、熱回収路の開閉弁を開いて給湯タンクの下部の水温上昇を行ない、所定温度状態になれば、この開閉弁を閉じることにより、給湯タンクの下部の水温を所定温度以上の状態に保つことができ、給湯タンク内の湯温維持に適したものとなる。 In the seventh invention, in addition to the effects of the fourth or fifth invention, on the basis of the detection by the water temperature detection unit, the open / close valve of the heat recovery path is opened in a low temperature state where the water temperature in the lower part of the hot water tank is lower than a predetermined temperature. Open and raise the water temperature at the bottom of the hot water tank. When the temperature reaches the specified temperature, close the on-off valve to close the hot water tank. The water temperature at the bottom of the tank can be kept above the predetermined temperature, making it suitable for maintaining the hot water temperature in the hot water tank.

第 8発明では、第 5乃至第 7発明の効果に加えて、給湯タンクの下部の水温が所定温度より高いときは、この高い温度の湯が放熱器へ循環することによる放熱器の放熱効果の低下を防止すると共に、副熱交換器によって放熱器による冷媒の熱の放熱効果を促進して、冷却加熱ュニットによる冷却効果を良好な状態に維持できるものとなる。 In the eighth invention, in addition to the effects of the fifth to seventh inventions, when the water temperature in the lower part of the hot water supply tank is higher than a predetermined temperature, the heat dissipation effect of the radiator by circulating this hot water to the radiator In addition, the sub heat exchanger promotes the heat radiation effect of the refrigerant by the radiator, and the cooling effect by the cooling and heating unit can be maintained in a good state.

第 9発明では、第 1発明または第 2発明の効果に加えて、給湯タンクから供給される水（湯）の熱を第 3熱交換器が組み上げることによって、暖房運転開始時から第 2熱交換器の温度を高い状態にすることができるため、暖房運転開始時の前記所定の室内の温度の立ち上がりを速めることができる。また、給湯タンクから供給される水（湯）の温度が、この上水道の温度よりも高い温度に加熱された状態であれば、この温水が第 3熱交換器へ流れることとなり、第 3熱交換器がこの熱を組み上げることによって、ヒートポンプ式冷却加熱ユニットの運転効率が、より一層向上するものとなる。このため、暖房運転開始時から第 2熱交換器の温度を高い状態にすることができるため、暖房運転開始時の前記所定の室内の温度の立ち上がりを速めることができる。また、いつまでも第 3熱交換器において給湯タンクから供給される水（又は湯）と熱交換させれば、給湯タンク 2内の湯温の低下を招くこととなるが、給湯タンク 2から第 3熱交換器への水（湯）の供給時間は制限されるため、このような懸念はない。 In the ninth invention, in addition to the effects of the first invention or the second invention, the third heat exchanger assembles the heat of the water (hot water) supplied from the hot water tank, so that the second heat exchange is started from the start of the heating operation. Since the temperature of the heater can be raised, the rise of the predetermined indoor temperature at the start of the heating operation can be accelerated. If the temperature of the water (hot water) supplied from the hot water tank is heated to a temperature higher than the temperature of the water supply, this hot water will flow to the third heat exchanger, and the third heat exchange As a result of the assembly of this heat, the operating efficiency of the heat pump type cooling / heating unit is further improved. For this reason, since the temperature of the second heat exchanger can be raised from the start of the heating operation, the temperature rise in the predetermined room at the start of the heating operation can be accelerated. In addition, if heat is exchanged with the water (or hot water) supplied from the hot water tank in the third heat exchanger indefinitely, the hot water temperature in the hot water tank 2 will be lowered. There is no such concern because the supply time of water (hot water) to the heat exchanger is limited.

第 1 0発明では、第 1発明または第 2発明の効果に加えて、暖房運転開始から所定時間は、第 3熱交換器のみに冷媒を流して、給湯タンクから供給される水（湯）の熱を第 3熱交換器が組み上げることにより、暖房運転開始時から第 2熱交換器の温度を高い状態にすることができるため、暖房運転開始時の前記所定の室内の温度の立ち上がりを速めることができる。そして、その後、通常の暖房サイクルに戻るため、給湯タンク内の湯温の低下を防止できる状態となる。 In the 10th invention, in addition to the effects of the 1st invention or the 2nd invention, for a predetermined time from the start of the heating operation, the coolant flows only into the third heat exchanger and is supplied from the hot water tank (hot water). The third heat exchanger assembles the heat of the Since the temperature of the second heat exchanger can be raised from the start of the cell operation, the temperature rise of the predetermined room at the start of the heating operation can be accelerated. And then, since it returns to the normal heating cycle, it will be in the state which can prevent the fall of the hot water temperature in a hot water supply tank.

第 1 1発明では、第 1乃至第 6発明の効果に加えて、加熱装置が二酸化炭素冷媒を圧縮機で圧縮する冷凍装置の二酸化炭素冷媒ガスを冷却する冷媒ガス熱交換器には、給湯タンクの底部の低温水が流入し二酸化炭素冷媒ガスによって加熱された湯温は、高温水の湯（例えば、冬場では 7 5 程度の湯、夏場では 8 5で程度の湯）が給湯タンクの上部へ戻ることとなり、給湯タンクの底部の低温水を取り出して十分な高温水の湯に仕上げることによって、給湯タンクの底部の低温水域を少なくでき、給湯タンク内の上部の湯温の低下抑制効果が図られ、給湯タンク内の上部から高温水の湯を利用場所へ供給するのに適したものとなる。また、冷却加熱ュニットの冷媒が H F C等の凝縮性冷煤で構成されたことにより、安価な冷凍システムで間に合うこととなり、冷房専用の空気調和機であっても差し支えない。図面の簡単な説明 In the first invention, in addition to the effects of the first to sixth inventions, the refrigerant gas heat exchanger for cooling the carbon dioxide refrigerant gas of the refrigeration apparatus in which the heating device compresses the carbon dioxide refrigerant by the compressor is provided. The hot water heated by the carbon dioxide refrigerant gas through the low temperature water at the bottom of the hot water tank is hot water (eg, hot water of about 75 in winter and hot water of about 85 in summer). It will return to the top of the tank, and the low temperature water at the bottom of the hot water tank can be reduced by taking out the low temperature water at the bottom of the hot water tank and making it into hot water with sufficient hot water. It is effective for suppressing hot water from the upper part of the hot water tank to the place where it is used. In addition, since the cooling and heating unit refrigerant is composed of condensable cooling such as HFC, it will be in time for an inexpensive refrigeration system, and an air conditioner dedicated to cooling may be used. Brief Description of Drawings

図 1は、本発明に係る熱回収路付き給湯装置の第 1実施形態の配管構成図を示している。（実施例 1 ) FIG. 1 shows a piping configuration diagram of a first embodiment of a hot water supply apparatus with a heat recovery path according to the present invention. (Example 1)

図 2は、本発明に係る熱回収路付き給湯装置の第 2実施形態の配管構成図を示している。（実施例 2 ) FIG. 2 shows a piping configuration diagram of a second embodiment of the hot water supply apparatus with a heat recovery path according to the present invention. (Example 2)

[符号の説明] [Explanation of symbols]

1 熱回収路付き給湯装置 1 Water heater with heat recovery path

2 給湯タンク 3 · · · • ·加熱装置（冷媒ガス熱交換器)2 Hot water tank 3 · · · • · Heating device (refrigerant gas heat exchanger)

3 A · · • ·水管 3 A · · · · Water pipe

3 B · · • ·冷媒管 3 B · · · · Refrigerant pipe

4 · · · • ·上水道 4 · · · • · Waterworks

5 · · · • ·減圧弁 5 · · · · · Pressure reducing valve

6 A · ， • ·入出水管 6 A ·, • · Inlet / outlet pipe

6 B · · • '上部入口管 6 B · · 'The upper inlet pipe

6 C · · • ·高温水（湯）取出し管 6 C · · · · Hot water (hot water) take-out pipe

6D · · • ·中間入口管 6D · · · · Intermediate inlet pipe

7 · · · ， ·ポンプ 7 · · · · · · Pump

8 · · · • ·高温水（湯）管 8 · · · • · Hot water pipe

9 · · · • ·利用場所 9 · · · • · Where to use

10 · · • '混合弁ユニット 10 · · • 'Mixing valve unit

11 · · • ·温水槽 11 · · · · Hot water tank

12 · · 12 · ·

13 · · • '圧縮機 13 · · • 'Compressor

14 · ， • ·膨張弁 14 ·, • · Expansion valve

15 · · • ·冷凍装置 15 · · · · Refrigeration equipment

16 · · • ·蒸発器 16 · · · · Evaporator

17 · · • · ファン 17 · · • · Fans

18 · · • ·圧力スィッチ 18 · · · · Pressure switch

20 · · • ·冷却加熱ユニット 20 · · · · Cooling and heating units

21 · · • ，圧縮機 21 · · •, Compressor

22 · · • ，放熱器 22 · · ·, Heatsink

22 A · • ·熱回収路 22 B · • -冷媒管 22 A · · · Heat recovery path 22 B · •-Refrigerant pipe

23 · · • ·膨張弁 23 · · · · Expansion valve

24 · · • ·蒸発器 24 · · · · Evaporator

25 · · • ·循環水路 25 · · · · Circulating waterway

25 A · • ·流入配管 25 A · · · Inflow piping

25 B · • ·流出配管 25 B · · · Outflow piping

26 · · • ·于、プ 26 · · · · 、, pu

27 · · • ·制御弁 27 · · · · Control valve

28 · · • ·水温検出部 28 · · · · Water temperature detector

29 · · • ·電磁式開閉弁 29 · · · · Solenoid on-off valve

30 · · • · コントローラ 30 · · · · Controller

30 A · • ·制御要素 30 A · · · Control elements

30 B · • ·制御要素 30 B · · · Control elements

30 C · • ·制御要素 30 C · · · Control elements

3 1 · · • ·副熱交換器（第 2放熱器要素) 3 1 · · · · Secondary heat exchanger (second radiator element)

3 1 A · ' ファン 3 1 A 'Fan

32 · · •電磁式開閉弁 32

33 · · ' • コントローラ 33 · · '• Controller

34 · · ' 34

35 · · ' •熱交換部 35 · · • Heat exchange section

36 · · ' •冷水槽、冷温水槽 36 · · '• Cold water tank, cold and hot water tank

40 · · · •四方弁 40 · · · • Four-way valve

41 · · · •電磁式開閉弁 41 · · · • Electromagnetic on-off valve

42 · · · ' ファン 42

43 · · · •電磁式開閉弁 4 4 · · · •第 2熱交換器 43 4 4 · · · • Second heat exchanger

4 5 · · · •電磁式開閉弁 4 5

2 2 0 · · •第 3熱交換器 2 2 0 · · • Third heat exchanger

2 2 0 A · •水路管 2 2 0 A

2 2 0 B · •冷媒管 2 2 0 B

2 4 0 · · •第 1熱交換器発明を実施するための最良の形態 2 4 0 · · • First heat exchanger Best mode for carrying out the invention

本発明の熱回収路付き給湯装置は、上水道が底部から供給され内部の水圧が所定の圧力状態に維持された密閉式である給湯タンクと、この給湯タンク内の水を加熱装置へ循環して加熱し、前記給湯タンクに溜めた湯を給湯夕ンクの上部から利用場所へ供給するようになっている給湯装置と、圧縮機で圧縮した後の冷媒の熱を放熱器で放熱し膨張装置を通つて蒸発器で蒸発させて再び前記圧縮機へ帰還する循環サイクルを構成し前記蒸発器で冷却運転を可能とした冷却加熱ユニットを備え、前記放熱器で放熱される冷媒の熱を前記給湯装置で回収するように、前記放熱器を通る冷媒の熱で加熱された水を前記給湯タンクに供給する熱回収路を備えたことを特徴とするものであり、以下に本発明の実施形態を記載する。 The hot water supply apparatus with a heat recovery path of the present invention is a sealed hot water supply tank in which water supply is supplied from the bottom and the internal water pressure is maintained at a predetermined pressure state, and water in the hot water supply tank is circulated to the heating apparatus. The hot water stored in the hot water tank is supplied from the upper part of the hot water supply tank to the place of use, and the heat of the refrigerant after being compressed by the compressor is dissipated by the radiator and expanded. It comprises a cooling and heating unit that evaporates in the evaporator through the device and returns to the compressor again, and enables the cooling operation by the evaporator, and heat of the refrigerant radiated by the radiator A heat recovery path for supplying water heated by the heat of the refrigerant passing through the radiator to the hot water tank so as to be recovered by the hot water supply device is provided. Describe the form.

[実施例 1 ] [Example 1]

次に、本発明の第 1の実施形態について説明する。図 1は本発明に係る熱回収路付き給湯装置の配管構成図を示している。 Next, a first embodiment of the present invention will be described. FIG. 1 shows a piping configuration diagram of a hot water supply apparatus with a heat recovery path according to the present invention.

図 1において、本発明に係る熱回収路付き給湯装置 1は、密閉式給湯タンク 2と、この給湯タンク 2内の水（又は湯）を所定の高温度に加熱する加熱装置 3とを備え、給湯タンク 2に溜めた湯を給湯タンク 2の上部から利用場所 9へ供給する給湯装置 1 Aを備えている。給湯夕ンク 2 内には、上水道 4が、減圧弁 5を介して所定圧力状態（例えば、略 8 . 8 P aの圧力状態）に低減された状態で、給湯タンク 2の底部に連通した入出水管 6 Aから供給され、給湯タンク 2内は所定の圧力状態に維持された密閉式である。この給湯タンク 2の水は、ポンプ 7の運転によつて入出水管 6 Aから取り出されて、加熱装置 3に設けた水管 3 Aを通る間に加熱され、この加熱された高温水（湯）を給湯タンク 2の上部に設けた上部入口管 6 Bから給湯タンク 2内へ戻すように、高温水（湯）管 8が設けられている。 In FIG. 1, a hot water supply apparatus 1 with a heat recovery path according to the present invention includes a sealed hot water supply tank 2 and a heating apparatus 3 for heating water (or hot water) in the hot water supply tank 2 to a predetermined high temperature. Hot water stored in hot water tank 2 above hot water tank 2 A hot water supply device 1 A is provided to supply to the use place 9 from the department. In the hot water supply tank 2, the water supply 4 communicated with the bottom of the hot water supply tank 2 in a state reduced to a predetermined pressure state (for example, a pressure state of approximately 8.8 Pa) via the pressure reducing valve 5. It is supplied from the inlet / outlet pipe 6A, and the hot water tank 2 is a sealed type maintained at a predetermined pressure state. The water in the hot water supply tank 2 is taken out from the inlet / outlet pipe 6 A by the operation of the pump 7, heated while passing through the water pipe 3 A provided in the heating device 3, and this heated hot water (hot water). A hot water (hot water) pipe 8 is provided so as to return from the upper inlet pipe 6 B provided in the upper part of the hot water tank 2 into the hot water tank 2.

給湯タンク 2内の高温水（湯）は、給湯タンク 2の頂部の高温水 (湯）の取出し管 6 Cから取り出して、利用場所 9へ供給される。給湯タンク 2内の中温水（湯）は、給湯タンク 2内の中温水（湯）域に連通した取出し管 6 Fから取り出して、利用場所 9へ供給される。利用場所 9は、流しを備えた台所や洗面台等の温水混合栓等の蛇口部 9 A、風呂部 9 B、家屋内の床暖房部 9 C等であり、高温水（湯）取出し管 6 Cに配管で接続された混合弁ュニット 1 0を介して高温水（湯）が分配される。床暖房部 9 Cは、ポンプ 1 2の運転によって、温水槽 1 1を介しての高温水（湯）が循環する。温水槽 1 1には、加熱用電気ヒー夕を付随させて温度制御させる方式でもよい。 The hot water (hot water) in the hot water tank 2 is taken out from the hot water (hot water) extraction pipe 6 C at the top of the hot water tank 2 and supplied to the use place 9. Medium temperature water (hot water) in the hot water tank 2 is taken out from the extraction pipe 6 F communicating with the medium temperature water (hot water) area in the hot water tank 2 and supplied to the use place 9. The use place 9 is a faucet part 9A for hot water mixing taps such as a kitchen equipped with a sink and a wash basin, a bath part 9B, a floor heating part 9C in a house, etc., and hot water (hot water) outlet pipe 6 Hot water (hot water) is distributed through a mixing valve unit 10 connected to C by piping. In the floor heating section 9 C, hot water (hot water) is circulated through the hot water tank 11 by the operation of the pump 12. The hot water tank 11 may have a method of controlling the temperature by attaching an electric heater for heating.

蛇口部 9 A、風呂部 9 Bの蛇口が開かれたとき、又はポンプ 1 2が運転されることによって、高温水（湯）取出し管 6 Cから利用場所 9へ給湯タンク 4の高温水（湯）が供給される。これは、給湯タンク 2が密閉式であるため、蛇口部 9 A、風呂部 9 Bの蛇口が開かれたとき、又はポンプ 1 2が運転されることによって、高温水（湯）取出し管 6 Cの圧力低下による給湯タンク 2内の圧力低下が生じ、これによつて、上水道 4 力減圧弁 5を介して所定圧力状態でもつて入出水管 6 Aから給湯夕ンク 2内に供給されつつ、給湯タンク 2内の高温水（湯）が取出し管 6 C から送出される仕組みである。このため、給湯タンク 2内の上部には高温水（湯）が貯蔵され、下部には低温水（湯）が貯蔵され、中間部には中間温度の湯（中温水の湯）が貯蔵された状態となる。 When faucet 9 A and bath 9 B are opened, or when pump 1 2 is operated, hot water (hot water) take-out pipe 6 C to use place 9 hot water in hot water tank 4 (Hot water) is supplied. This is because the hot water supply tank 2 is hermetically sealed, so when the faucet of faucet part 9 A and bath part 9 B is opened or when pump 1 2 is operated, hot water (hot water) discharge pipe 6 The pressure drop in the hot water tank 2 due to the pressure drop in C occurs. Force It is a mechanism in which hot water (hot water) in the hot water tank 2 is sent from the discharge pipe 6 C while being supplied into the hot water supply tank 2 from the inlet / outlet pipe 6 A through the pressure reducing valve 5 at a predetermined pressure state. . For this reason, hot water (hot water) is stored in the upper part of the hot water supply tank 2, low temperature water (hot water) is stored in the lower part, and intermediate temperature hot water (medium hot water) is stored in the middle part. It becomes a state.

加熱装置 3の運転制御による給湯タンク 2内の湯温の制御、利用場所 9への給湯タンク 2内の湯の供給、給湯タンク 2から利用場所 9へ供給する湯温の調節制御等を行なうコントローラ 3 0を備えている。コントローラ 3 0には、台所に設けたリモートコントローラ（以下、リモコンという） 3 O Rが接続され、リモコン 3 O Rによって、冷凍装置 1 5を〇N— O F F等の操作ができる。混合弁ユニット 1 0には、コントローラ 3 8が設けられ、風呂用リモコン 3 0 Fと床暖房用リモコン 3 0 Uが接続されている。そして、風呂用リモコン 3 0 Fによって、風呂部 9 B の浴槽へ供給する湯温の設定や湯レベルの設定等ができ、風呂用リモコン 3 O Fによって、この設定された条件において、混合弁ユニット 1 0 のバルブを開閉して風呂部 9 Bの浴槽へ湯を供給する。また、床暖房用リモコン 3 0 Uはコントローラ 3 3にも接続され、冷却加熱ュニット 2 0力冷房運転のときは、コントローラ 3 8に床暖房部 9 Cへ湯が供給されないように、混合弁ュニッ卜 1 0のバルブを閉じるように制御し、暖房運転のときは、コントローラ 3 8に床暖房部 9 Cへ湯が供給されるように、混合弁ユニット 1 0のバルブを開くように制御する。床暖房用リモコン 3 0 Uによって、床暖房部 9 Cへ供給される湯温を設定できる。リモコン 3 0 F、 3 0 R、 3 0 U等による設定に基づくコントローラ 3 0の動作によって、その設定された温度の湯を給湯タンク 2から利用場所 9へ供給するために、給湯タンク 2内の高温水（湯）を取出し管 6 Cから送出するか、中温水（湯）を取出し管 6 Fから送出するかを洗濯するために切り替え弁 5 O Aと、コントローラ 3 0の動作によって前記設定された温度の湯を作るように、切り替え弁 5 O Aから供給される湯と上水道 4から供給される通常温度の水との混合割合を定める混合調整弁 5 0 Bを備えている。混合調整弁 5 0 Bは、ステッピングモ一夕方式によって弁が動作して、湯と水が所定の混合割合となるように制御される。これによつて、低温湯から中温湯、高温湯までの温度の湯が、利用場所 9へ供給できることとなる。 Controller for controlling the temperature of hot water in the hot water tank 2 by operation control of the heating device 3, supplying hot water in the hot water tank 2 to the use place 9, and adjusting and controlling the temperature of hot water supplied from the hot water tank 2 to the use place 9 With 3 0. The controller 30 is connected to a remote controller (hereinafter referred to as “remote control”) 3 OR provided in the kitchen, and the refrigeration unit 15 can be operated such as “N-OFF” by the remote control 3 OR. The mixing valve unit 10 is provided with a controller 3 8 to which a bath remote control 30 F and a floor heating remote control 30 U are connected. The bath remote control 30 F can be used to set the temperature of the hot water to be supplied to the bathtub of the bath section 9 B, the level of the hot water, etc., and the remote controller for the bath 3 OF can be used under the set conditions. 1 Open and close the 0 valve to supply hot water to the bathtub 9 B. In addition, the floor heating remote control 30 U is also connected to the controller 33, and the cooling / heating unit 20 0 is mixed with the mixing valve unit so that the controller 3 8 is not supplied with hot water to the floor heating unit 9 C during cooling operation.卜 Controls the valve of 10 to be closed, and during the heating operation, controls the controller 38 to open the valve of the mixing valve unit 10 so that hot water is supplied to the floor heating unit 9 C. The temperature of hot water supplied to the floor heating unit 9 C can be set with the floor heating remote control 3 0 U. In order to supply hot water of the set temperature from the hot water tank 2 to the use place 9 by the operation of the controller 30 based on the settings by the remote controller 30 F, 30 R, 30 U, etc. Take out hot water (hot water) 6 Switch to make hot water of the set temperature by the operation of the switching valve 5 OA and controller 30 to wash whether to send out from C or take out hot water (hot water) from pipe 6 F Valve 5 A mixing adjustment valve 50 B is provided that determines the mixing ratio of hot water supplied from the OA and normal temperature water supplied from the water supply 4. The mixing regulating valve 50 B is controlled so that the hot water and water have a predetermined mixing ratio by operating the valve by the stepping motor method. As a result, hot water having a temperature ranging from low temperature hot water to medium hot water and high temperature hot water can be supplied to the use place 9.

加熱装置 3は、二酸化炭素もしくは二酸化炭素を多量に含む冷媒（二酸化炭素冷媒という）を圧縮機 1 3で圧縮する冷凍装置 1 5の二酸化炭素冷媒ガスを冷却する冷媒ガス熱交換器で構成される。冷凍装置 1 5は、圧縮機 1 3で二酸化炭素冷媒を圧縮し、この圧縮された冷媒ガスが冷媒ガス熱交換器である加熱装置 3の冷媒管 3 Bを通った後、膨張装置としての膨張弁 1 4から蒸発器 1 6へ至り、蒸発器 1 6で周囲の熱を奪って (汲み上げ）アキュームレータ（図示せず）を通って再び圧縮機 1 3へ帰還して圧縮される冷凍サイクルを繰り返す。蒸発器 1 6での熱交換の向上のために、ファン 1 7が設けられている。二酸化炭素冷媒を用いた場合は、フロン系冷媒に比して冷媒圧力が高く、加熱装置 3に設けた冷媒管 3を通る間に、水管 3 Aを通る水の温度を高温水（湯）にまで加熱できる。このため、例えば、例えば 1 5 °C程度の上水道が給湯タンク 2 内の下部から流入する場合、冬場では 7 5 °C程度の湯、夏場では 8 5 °C 程度の湯を給湯タンク 2内の上部に供給することができる。 Heating device 3 is composed of a refrigerant gas heat exchanger that cools the carbon dioxide refrigerant gas of refrigeration device 15 that compresses carbon dioxide or a refrigerant containing a large amount of carbon dioxide (referred to as carbon dioxide refrigerant) with compressor 1 3. Is done. The refrigeration apparatus 15 compresses the carbon dioxide refrigerant with the compressor 1 3, and after the compressed refrigerant gas passes through the refrigerant pipe 3 B of the heating apparatus 3 that is a refrigerant gas heat exchanger, The expansion valve 1 4 leads to the evaporator 1 6, and the evaporator 16 removes the ambient heat (pumps up), passes through an accumulator (not shown), and returns to the compressor 1 3 to be compressed again. repeat. Fan 17 is provided to improve heat exchange in evaporator 16. When carbon dioxide refrigerant is used, the refrigerant pressure is higher than that of chlorofluorocarbon refrigerant, and the temperature of water passing through water pipe 3A is high-temperature water (hot water) while passing through refrigerant pipe 3 provided in heating device 3. Can be heated up to For this reason, for example, when a water supply of about 15 ° C flows from the lower part of the hot water tank 2, hot water of about 75 ° C in the winter and about 85 ° C in the summer Can be fed to the top.

加熱装置 3に設けた上記水管 3 Aと冷媒管 3 Bは、内側管を冷媒管 3 Bとし、外側管を水管 3 Aとする二重管構造でもよく、または、多数の伝熱フィンを水管 3 Aと冷媒管 3 Bが並列状態で貫通配置した熱交器構造であってもよい。 The water pipe 3 A and the refrigerant pipe 3 B provided in the heating device 3 may have a double pipe structure in which the inner pipe is the refrigerant pipe 3 B and the outer pipe is the water pipe 3 A, or a large number of heat transfer fins are water pipes. Heat exchanger structure with 3 A and refrigerant pipe 3 B penetrating in parallel It may be made.

本発明に係る熱回収路付き給湯装置 1は、上記の他に、空気調和機能等を有する冷却加熱ュニッ卜 2 0を備えている。冷却加熱ュニッ卜 2 0 は、圧縮機 2 1で圧縮した冷媒の熱を放熱器 2 2 (第 1熱交換器という）で放熱し膨張弁 2 3を通って蒸発器 2 4 (第 2熱交換器という）で蒸発させて再び圧縮機 2 1へ帰還する冷凍サイクルを構成している。そして、放熱器 2 2には、水（又は湯）が通る熱回収路 2 2 Aと冷媒の通る冷媒管 2 2 Bを備え、放熱器 2 2を通る冷媒の熱を熱回収路 2 2 Aの水が奪う作用部である。給湯タンク 2の底部の低温水が入出水管 6 Aから出て、流入配管 2 5 Aから熱回収路 2 2 Aへ流入し、熱回収路 2 2 A で加熱された温水が流出配管 2 5 Bから給湯タンク 2の中間入口管 6 D へ戻るように、ポンプ 2 6を備えた循環水路 2 5を構成している。中間入口管 6 Dは、給湯タンク 2の上部入口管 6 Bと給湯タンク 2の底部との間に位置する。 The hot water supply apparatus 1 with a heat recovery path according to the present invention includes a cooling and heating unit 20 having an air conditioning function and the like in addition to the above. The cooling and heating unit 20 radiates the heat of the refrigerant compressed by the compressor 21 with a radiator 2 2 (referred to as a first heat exchanger) and passes through an expansion valve 23 with an evaporator 2 4 (second heat). This is a refrigeration cycle that evaporates with a exchanger and returns to the compressor 21 again. The radiator 2 2 includes a heat recovery path 2 2 A through which water (or hot water) passes and a refrigerant pipe 2 2 B through which the refrigerant passes, and the heat of the refrigerant passing through the radiator 2 2 is transferred to the heat recovery path. 2 2 A The action part that water of A takes away. Low temperature water at the bottom of the hot water tank 2 exits from the inlet / outlet pipe 6A, flows into the heat recovery path 2 2A from the inflow pipe 2 5A, and warm water heated in the heat recovery path 2 2A flows out to the pipe 2 5 A circulating water channel 25 having a pump 26 is configured so as to return from B to the intermediate inlet pipe 6 D of the hot water tank 2. The intermediate inlet pipe 6 D is located between the upper inlet pipe 6 B of the hot water tank 2 and the bottom of the hot water tank 2.

放熱器 2 2に設けた熱回収路 2 2 Aの管と冷媒管 2 2 Bは、内側管を冷媒管 2 2 Bとし、外側管を熱回収路 2 2 Aとする二重管構造でもよく、または、多数の伝熱フィンを熱回収路 2 2 Aの管と冷媒管 2 2 Bが並列状態で貫通配置した熱交器構造であってもよく、また、プレート型やマイク口チューブ型等の熱交器であってもよい。 The heat recovery path 2 2 A pipe and the refrigerant pipe 2 2 B provided in the radiator 2 2 may have a double pipe structure in which the inner pipe is the refrigerant pipe 2 2 B and the outer pipe is the heat recovery path 2 2 A. Alternatively, a heat exchanger structure in which a large number of heat transfer fins are arranged through the heat recovery path 2 2 A and the refrigerant pipe 2 2 B in parallel may be used, or a plate type or a microphone tube type A heat exchanger such as

加熱装置 3は、上記のように二酸化炭素冷媒を用いた冷凍装置 1 5の二酸化炭素冷媒ガスを冷却する冷媒ガス熱交換器で構成されるが、冷却加熱ユニット 2 0の冷媒は、 H F C等の凝縮性冷媒で構成される。これによって、空気調和機能を有する冷却加熱ユニット 2 0は、二酸化炭素冷媒を用いた冷凍装置よりも安価な冷凍システムで間に合うこととなり、冷房と暖房兼用の空気調和機でなく、冷房専用の空気調和機であっても差し支えない。冷却加熱ユニット 2 0力 H F C等の凝縮性冷媒を使用する冷凍装置で構成される場合には、放熱器 2 2の熱回収路 2 2 Aで加熱された温水の温度は、略 5 5 °C程度である。 The heating device 3 is composed of a refrigerant gas heat exchanger that cools the carbon dioxide refrigerant gas of the refrigeration device 15 using the carbon dioxide refrigerant as described above, but the refrigerant of the cooling heating unit 20 is an HFC or the like. Consists of condensable refrigerant. As a result, the cooling and heating unit 20 having an air conditioning function can be used in a refrigeration system that is cheaper than a refrigeration system using carbon dioxide refrigerant, and is not an air conditioner for both cooling and heating. Even if the machine There is no problem. Cooling and heating unit 20 When configured with a refrigeration system that uses condensable refrigerant such as HFC, the temperature of the hot water heated in the heat recovery path 2 2 A of the radiator 2 2 is approximately 55 °. About C.

熱回収路 2 2 Aで加熱された温水が通る流出配管 2 5 B内の温水を上部入口管 6 Bまたは中間入口管 6 Dのいずれかに供給するように制御する制御弁 2 7を設けている。給湯タンク 2には、その中の水温を検知するために、上部、中間部及び下部の水温を検出する複数の検出部 2 8 A 〜2 8 Eからなる水温検出部 2 8を設けている。水温検出部 2 8の検出に基づき、制御弁 2 7を制御して流出配管 2 5 Bを通る温水の流れを上部入口管 6 Bまたは中間入口管 6 Dのいずれかへ切り替え制御する制御要素 3 O Aを備えたコントローラ 3 0を備えている。 Heat recovery path 2 2 Outflow pipe through which hot water heated in 2A passes 2 5 Control valve 2 7 is controlled to supply hot water in B to either upper inlet pipe 6 B or intermediate inlet pipe 6 D Provided. The hot water supply tank 2 is provided with a water temperature detection unit 28 comprising a plurality of detection units 28 A to 28 E for detecting the water temperature of the upper, middle and lower parts in order to detect the water temperature therein. . Control element that controls the control valve 2 7 based on the detection of the water temperature detector 2 8 to switch the flow of hot water passing through the outflow pipe 2 5 B to either the upper inlet pipe 6 B or the intermediate inlet pipe 6 D 3 It has a controller 30 with OA.

このため、給湯タンク 2内の上部の水温が所定の温度、例えば 5 0でよりも低い場合には、所定の運転モード（夏場の高温の湯の追い焚きを必要としないモード等）であれば、熱回収路 2 2 Aで加熱された温水を上部入口管 6 Bから給湯タンク 2内へ戻して、給湯タンク 2内の上部の温度上昇を促進して、速く給湯タンク 2内の上部の温度を上昇させることに寄与できるものとなる。また、給湯タンク 2内の上部の水温が高い場合は、例えば所定の温度（例えば 7 0 °C) 以上のときは、熱回収路 2 2 Aで加熱された温水を中間入口管 6 Dから給湯タンク 2内へ戻すようにして、給湯タンク 2内の上部の高温が低下しないようにし、給湯タンク 2内の下部の水温上昇に寄与する。 For this reason, if the water temperature in the upper part of the hot water supply tank 2 is lower than a predetermined temperature, for example, 50, if it is in a predetermined operation mode (such as a mode that does not require reheating of hot water in summer) Heat recovery path 2 2 Return the hot water heated in A to the hot water tank 2 from the upper inlet pipe 6 B, and promote the temperature rise in the upper part of the hot water tank 2 to quickly increase the temperature of the upper part of the hot water tank 2 It can contribute to raising If the water temperature in the upper part of the hot water tank 2 is high, for example, if the temperature is higher than a predetermined temperature (for example, 70 ° C.), hot water heated in the heat recovery path 2 2 A is supplied from the intermediate inlet pipe 6 D. By returning to the inside of the tank 2, the high temperature in the upper part of the hot water tank 2 is not lowered, and the water temperature in the lower part of the hot water tank 2 is increased.

また、水温検出部 2 8の検出に基づき、循環水路 2 5を水が循環する状態と、循環しない状態とに制御する制御要素 3 0 Bをコントローラ 3 0に備えている。循環水路 2 5を水が循環する状態と、循環しない状態とに制御するために、循環水路 2 5を開閉する電磁式開閉弁 2 9を設けている。これによつて、給湯タンク 2内の下部の水温が所定温度（例えば、放熱器 2 2で加熱された温水の温度 5 5 °C) よりも低い場合は、熱回収路 2 2 Aで加熱された温水を中間入口管 6 Dから給湯タンク 2へ供給するように、制御弁 2 7を制御し、開閉弁 2 9を開くと共に、ポンプ 2 6を運転する制御を行う。また、給湯タンク 2内の下部の水温が所定温度（例えば、放熱器 2 2で加熱された温水の温度 5 5 °C) 以上に上昇している場合は、熱回収路 2 2 Aで加熱された温水の給湯タンク 2への供給停止とするように開閉弁 2 9を閉じると共に、ポンプ 2 6を停止する制御を行う。これによつて、給湯タンク 2内の下部の水温が所定温度状態に高いときは、無駄にポンプ 2 6を運転せず、省エネ効果を図ることができる。 In addition, the controller 30 is provided with a control element 30 B that controls whether the water circulates in the circulating water channel 25 and does not circulate based on the detection of the water temperature detector 28. An electromagnetic on-off valve 29 that opens and closes the circulating water channel 25 is provided to control the circulating water channel 25 in a state where water circulates and a state in which it does not circulate. ing. As a result, if the water temperature in the lower part of the hot water tank 2 is lower than the predetermined temperature (for example, the temperature of the hot water heated by the radiator 22 2 is 55 ° C), it is heated by the heat recovery path 2 2 A. The control valve 27 is controlled so that the heated hot water is supplied from the intermediate inlet pipe 6 D to the hot water supply tank 2, the on-off valve 29 is opened, and the pump 26 is operated. If the water temperature in the lower part of the hot water supply tank 2 rises above a predetermined temperature (for example, the temperature of the hot water heated by the radiator 22 is 55 ° C), it is heated by the heat recovery path 22 A. The on-off valve 29 is closed and the pump 26 is stopped so that the supply of hot water to the hot water supply tank 2 is stopped. As a result, when the water temperature in the lower part of the hot water supply tank 2 is high to a predetermined temperature state, the pump 26 is not operated unnecessarily, and an energy saving effect can be achieved.

また、制御要素 3 0 Bは、冷却加熱ユニット 2 0の運転中（圧縮機 2 1の運転中）において、水温検出部 2 8の検出に基づき、循環水路 2 5 を水が循環する状態と、循環しない状態とに制御するように、上記同様に、制御弁 2 7の制御と開閉弁 2 9の開閉とポンプ 2 6の運転、停止を制御する。 In addition, the control element 30 B has a state in which water circulates in the circulation channel 25 based on the detection of the water temperature detection unit 28 during the operation of the cooling / heating unit 20 (during operation of the compressor 21). In the same manner as described above, the control of the control valve 27, the opening and closing of the on-off valve 29, and the operation and stop of the pump 26 are controlled so as to control the non-circulating state.

また、上記のように、給湯タンク 2内の下部の水温が所定温度（例えば、放熱器 2 2で加熱された温水の温度 5 5 ）以上に上昇している場合には、循環水路 2 5を水が循環しない状態に制御するため、冷却加熱ュニット 2 0の放熱器 2 2に温度の高い水が流れることによって生じる放熱器 2 2の放熱効果の低下を防止でき、冷却加熱ュニット 2 0の運転効率の低下を抑制できるものとなる。 In addition, as described above, when the water temperature in the lower part of the hot water tank 2 rises above a predetermined temperature (for example, the temperature of hot water heated by the radiator 22), the circulation channel 2 Since 5 is controlled so that water does not circulate, it is possible to prevent the heat dissipation effect of radiator 2 2 from being reduced by the flow of high-temperature water to radiator 2 2 of cooling heating unit 20. Cooling heating unit 2 0 It is possible to suppress a decrease in the operation efficiency.

このように、給湯タンク 2内の上部の水温のみならず、給湯タンク 2 内の中間部及び下部の水温に応じて、熱回収路 2 2 Aで加熱された温水を給湯タンク 2の上部に戻すか中間部に戻すかの制御と、熱回収路 2 2 Aで加熱された温水の給湯タンク 2への供給停止制御を行えるため、温度が高い湯を給湯タンク 2内に溜めることができるものとなる。 In this way, the hot water heated in the heat recovery path 2 2 A is returned to the upper part of the hot water tank 2 in accordance with not only the upper water temperature in the hot water tank 2 but also the intermediate and lower water temperatures in the hot water tank 2. Or return to the middle part and heat recovery path 2 2 Since the supply stop control to the hot water supply tank 2 heated by A can be performed, hot water having a high temperature can be stored in the hot water supply tank 2.

給湯タンク 2は、例えば 4 6 0リツトルの湯が貯蔵できる容量とした場合、水温検出部 2 8で検出する 8 0 °Cの湯が 1 0 0リツトルに減少したことがコントローラ 3 0によって判別されれば、加熱装置 3を構成する冷凍装置 1 5の圧縮機 1 3が稼動する構成である。通常、加熱装置 3 の冷凍装置 1 5は、深夜電力で圧縮機 1 3が稼動するようにしているが、コントローラ 3 0は学習機能を備えているため、コントローラ 3 0が日常の湯の使用状況を把握して、給湯タンク 2内の上部に溜める湯温は何でが適切かを自動設定して、冷凍装置 1 5の圧縮機 1 3の稼動を制御している。 For example, if the hot water tank 2 has a capacity capable of storing 46 60 liters of hot water, the controller 30 determines that the 80 ° C hot water detected by the water temperature detector 28 has decreased to 100 liters. If so, the compressor 13 of the refrigeration apparatus 15 constituting the heating apparatus 3 operates. Normally, the refrigeration unit 1 5 of the heating unit 3 is operated by the compressor 1 3 at midnight power, but the controller 3 0 has a learning function, so the controller 3 0 uses daily hot water. By grasping the situation, the hot water temperature stored in the upper part of the hot water tank 2 is automatically set to determine what is appropriate, and the operation of the compressor 1 3 of the refrigeration unit 15 is controlled.

また、コントローラ 3 0には、加熱装置 3が稼動状態のとき（圧縮機 1 3が運転状態の冷凍装置 1 5 ) は、熱回収路 2 2 Aを水が循環しないように開閉弁 2 9を閉じ、ポンプ 2 6を停止すると共に、制御弁 2 7を制御する制御要素 3 0 Cを設け、加熱装置 3による加熱を優先して、給湯タンク 2の上部に温度の高い湯を速く貯蔵することができるようになつている。 When the heating device 3 is in operation (the refrigeration device 15 with the compressor 13 in operation), the controller 30 is provided with an on-off valve 29 so that water does not circulate through the heat recovery path 2 2 A. Close and stop pump 2 6 and provide control element 30 0 C to control control valve 2 7 and preferentially heat by heating device 3 to store hot hot water in the upper part of hot water tank 2 quickly I am able to do that.

また、本発明では、上記の構成に付加する構成として、熱回収路 2 2 Aに並列に、流入配管 2 5 Aと流出配管 2 5 Bに接続された第 2放熱器要素としての副熱交換器 3 1を設けている。そして、副熱交換器 3 1への水の循環を制御するために、電磁式開閉弁 3 2を設けている。この場合、副熱交換器 3 1には、熱交換促進用としてファン 3 1 Aが設けられている。給湯タンク 2の下部の水温が所定温度（例えば、放熱器 2 2で加熱された温水の温度 5 5 °C) より低い低温度状態では、ファン 3 1 A は O F F状態であり、開閉弁 3 2を閉じて副熱交換器 3 1への水の循環を止めている。また、給湯タンク 2の下部の水温が所定温度（例えば、放熱器 2 2で加熱された温水の温度 5 5 °C) 以上に高いときは、開閉弁 2 9を閉じると共に開閉弁 3 2を開き、ポンプ 2 6を運転状態とし、フアン 3 1 Aを O N状態とする。 Further, in the present invention, as a configuration added to the above configuration, the auxiliary heat exchange as the second radiator element connected to the inflow pipe 25A and the outflow pipe 25B in parallel with the heat recovery path 22A. 3 1 is provided. In order to control the circulation of water to the auxiliary heat exchanger 31, an electromagnetic on-off valve 32 is provided. In this case, the auxiliary heat exchanger 31 is provided with a fan 31 A for promoting heat exchange. In the low temperature state where the water temperature in the lower part of the hot water tank 2 is lower than a predetermined temperature (for example, the temperature of hot water heated by the radiator 2 2 55 ° C), the fan 3 1 A is in the OFF state, and the on-off valve 3 2 Close the secondary heat exchanger 3 1 to circulate the water Has stopped. When the water temperature in the lower part of the hot water tank 2 is higher than a predetermined temperature (for example, the temperature of hot water heated by the radiator 2 2 is 55 ° C), the on-off valve 2 9 is closed and the on-off valve 3 2 is opened. Pump 2 6 is in operation and fan 3 1 A is in ON state.

これによつて、給湯タンク 2の下部の水温が所定温度より低い低温度状態では、開閉弁 3 2を閉じることによって、放熱器 2 2における放熱効果に寄与すると共に熱回収路 2 2 A内の水が加熱され、給湯タンク 2 の下部の水温上昇を行なうことができる。また、給湯タンク 2の下部の水温が所定温度より高いときは、この高い温度の湯が放熱器 2 2へ循環すれば、冷却加熱ュニット 2 0の放熱器 2 2の放熱効果の低下が生じるが、開閉弁 2 9を閉じることにより、それを防止している。また、水の閉回路によって放熱器 2 2と副熱交換器 3 1を水が循環するため、放熱器 2 2による冷媒の熱の放熱効果を促進して、冷却加熱ュニット 2 0による冷却効果を良好な状態に維持できるものとなる。 As a result, in the low temperature state where the water temperature in the lower part of the hot water supply tank 2 is lower than the predetermined temperature, closing the on-off valve 3 2 contributes to the heat dissipation effect in the radiator 2 2 and at the same time in the heat recovery path 2 2 A. The water is heated and the water temperature in the lower part of the hot water tank 2 can be raised. In addition, when the water temperature in the lower part of the hot water tank 2 is higher than the predetermined temperature, if this hot water circulates to the radiator 22, the heat dissipation effect of the radiator 22 of the cooling / heating unit 20 may be reduced. This is prevented by closing the on-off valve 29. Also, since water circulates in the radiator 2 2 and the auxiliary heat exchanger 3 1 due to the closed circuit of water, the heat radiation effect of the refrigerant heat by the radiator 2 2 is promoted, and the cooling effect by the cooling / heating unit 20 Can be maintained in a good state.

上記において、圧縮機 1 3を出た冷媒の温度、又は加熱装置 3を構成する冷媒ガス熱交換器 3を出た冷媒の温度を温度センサ 1 8で検出し、コントローラ 3 0によって、冷凍装置 1 5の運転制御を行う。この運転制御は、温度センサ 1 8力検出する温度が所定の温度となるように、コントローラ 3 0によって、圧縮機 1 3の回転数をインバー夕制御する。また、循環ポンプ 7の吐出量は、給湯タンク 2に供給される湯温が設定値（9 2 °C、 8 2 ^等）になるように制御される。このように、冷凍装置 1 5の運転によって、給湯タンク 2内に高温水（湯）を貯蔵できることとなる。 In the above, the temperature of the refrigerant exiting the compressor 13 or the temperature of the refrigerant exiting the refrigerant gas heat exchanger 3 constituting the heating device 3 is detected by the temperature sensor 18, and the refrigeration device 1 is detected by the controller 30. Perform 5 operation control. In this operation control, the rotational speed of the compressor 13 is inversely controlled by the controller 30 so that the temperature detected by the temperature sensor 18 becomes a predetermined temperature. The discharge amount of the circulation pump 7 is controlled so that the hot water temperature supplied to the hot water supply tank 2 becomes a set value (92 ° C, 82 ^, etc.). As described above, the operation of the refrigeration apparatus 15 can store the hot water (hot water) in the hot water supply tank 2.

空気調和機能を有する冷却加熱ュニッ卜 2 0の運転制御は、冷房負荷に応じて行なわれる。即ち、冷却加熱ュニット 2 0の蒸発器 2 4で冷却した空気を家屋内の所定の室内に供給し、又はブライン（水、特定な液体）を熱交換部 3 5へ循環してこの熱交換部 3 5で冷却した空気を家屋内の所定の室内に供給することにより、この所定の室内を冷房する。この場合、実質的この所定の室内の温度を検出する温度検知センサ（実質的に冷房される所定の室内の温度を検出するように、この所定の室内の温度、蒸発器 2 4の温度、または熱交換部 3 5の温度等を検出する温度検知センサを設ける等の手段がある）を設け、コントローラ 3 3によつて冷却加熱ュニット 2 0の圧縮機 2 1の運転を制御する。 The operation control of the cooling / heating unit 20 having the air conditioning function is performed according to the cooling load. That is, cooling by cooling evaporator 20 20 The supplied air is supplied to a predetermined room in the house, or brine (water, a specific liquid) is circulated to the heat exchange unit 35 and the air cooled in the heat exchange unit 35 is supplied to the predetermined room in the house. This predetermined room is cooled by supplying to In this case, a temperature detection sensor that substantially detects the temperature of the predetermined room (the temperature of the predetermined room, the temperature of the evaporator 24 so as to detect the temperature of the predetermined room to be substantially cooled, Or a temperature detection sensor for detecting the temperature of the heat exchanging portion 35, etc.) is provided, and the operation of the compressor 21 of the cooling / heating unit 20 is controlled by the controller 33.

図 1の冷却加熱ユニット 2 0は、第 2熱交換器である蒸発器 2 4でブライン（水、特定な液体）を冷却し、この冷却したブライン（水、特定な液体）をポンプ 3 4の運転によって、所定の室内の天井部に設置した熱交換部 3 5や、所定の室内の床下面部に設置した熱交換部 3 5へ供給し、冷水槽 3 6から再び第 2熱交換器である蒸発器 2 4へ帰還するサイクルで循環させる方式である。熱交換部 3 5が所定の室内の天井部に設置した熱交換部 3 5である場合は、ファンによって熱交換部 3 5に所定の室内の空気が循環して、熱交換部 3 5によって所定の室内の空気が冷却されるものである。 The cooling heating unit 20 in FIG. 1 cools the brine (water, specific liquid) with the evaporator 2 4, which is the second heat exchanger, and pumps this cooled brine (water, specific liquid) 3 4 Is supplied to the heat exchanger 3 5 installed on the ceiling of the specified room and the heat exchanger 3 5 installed on the lower surface of the floor of the specified room, and again from the cold water tank 3 6 with the second heat exchanger. It is a system that circulates in a cycle returning to a certain evaporator 24. When the heat exchanging unit 35 is the heat exchanging unit 35 installed on the ceiling of the predetermined room, the air in the predetermined room is circulated to the heat exchanging unit 35 by the fan, and the heat exchanging unit 35 The air in the specified room is cooled.

[実施例 2 ] [Example 2]

次に、本発明の第 2の実施形態について説明する。図 2は本発明に係る熱回収路付き給湯装置の配管構成図を示している。 Next, a second embodiment of the present invention will be described. FIG. 2 shows a piping configuration diagram of a hot water supply apparatus with a heat recovery path according to the present invention.

図 2に示す本発明に係る熱回収路付き給湯装置 1において、図 1に示す部分と同じ機能部分は同一符号で示しており、その動作、構成は実施例 1に記載したものを援用する。実施例 2が実施例 1と異なる部分は、冷却加熱ュニット 2 0をヒートポンプ式とした構成である。 In the hot water supply device 1 with a heat recovery path according to the present invention shown in FIG. 2, the same functional parts as those shown in FIG. 1 are denoted by the same reference numerals, and the operation and configuration thereof are the same as those described in the first embodiment. . Example 2 differs from Example 1 in that the cooling and heating unit 20 is a heat pump type.

実施例 2のものは、ヒートポンプ式冷却加熱ユニット 2 0によって、家屋内の所定の室内を暖房する場合、暖房運転スタート当初における前記所定の室内の暖房効果（室内の温度上昇）を速めることができるように、運転効率を向上させるものである。 In Example 2, the heat pump cooling and heating unit 20 When heating a predetermined room in a house, the operation efficiency is improved so that the heating effect (internal temperature rise) of the predetermined room at the beginning of the heating operation can be accelerated.

ヒートポンプ式冷却加熱ユニット 2 0は、圧縮機 2 1、膨張装置としての膨張弁 2 3、四方弁 4 0、電磁式開閉弁 4 1、電磁式開閉弁 4 3、第 1熱交換器 4 4、第 2熱交換器 2 4 0を備え、圧縮機 2 1で圧縮した冷媒を第 1熱交換器 4 4と膨張弁 2 3を通って第 2熱交換器 2 4 0で蒸発させて再び圧縮機 2 1へ帰還する冷房運転サイクルと、圧縮機 2 1で圧縮した冷媒を第 2熱交換器 2 4 0と膨張弁 2 3を通って第 1熱交換器 4 4で蒸発させて再び圧縮機 2 1へ帰還する暖房運転サイクルとを構成するヒートボンプ式空気調和機能を有する冷却加熱ュニットである。第 1熱交換器 4 4と電磁式開閉弁 4 3の直列配管に、第 3熱交換器 2 2 0の冷媒管 2 2 0 Bと電磁式開閉弁 4 1の直列配管が並列に接続されている。第 3熱交換器 2 2 0は、実施例 1の放熱器 2 2と同様に、水 (又は湯）が通る水路管 2 2 O Aと冷媒の通る冷媒管 2 2 0 Bを備え、水路管 2 2 O Aを通る温水の熱を冷媒管 2 2 0 Bの冷媒が奪う作用部である。給湯タンク 2の底部の低温水が入出水管 6 Aから出て、流入配管 2 5 Aから水路管 2 2 O Aへ流入し、水路管 2 2 O Aで冷却された水が流出配管 2 5 Bから給湯タンク 2の中間入口管 6 Dへ戻るように、ボンプ 2 6を備えた循環水路 2 5を構成している。 Heat pump cooling / heating unit 2 0 consists of compressor 2 1, expansion valve 2 3, expansion valve 4 0, electromagnetic on-off valve 4 1, electromagnetic on-off valve 4 3, first heat exchanger 4 4 The second heat exchanger 2 40 is provided, and the refrigerant compressed by the compressor 2 1 is vaporized by the second heat exchanger 2 40 through the first heat exchanger 4 4 and the expansion valve 2 3 and again. Cooling operation cycle returning to the compressor 2 1, and refrigerant compressed by the compressor 2 1 passes through the second heat exchanger 2 40 and the expansion valve 2 3 to evaporate in the first heat exchanger 4 4 and is compressed again This is a cooling and heating unit having a heat-bump type air conditioning function that constitutes a heating operation cycle that returns to the machine 21. The first heat exchanger 4 4 and the electromagnetic on-off valve 4 3 are connected in series to the third heat exchanger 2 2 0 refrigerant pipe 2 2 0 B and the electromagnetic on-off valve 4 1 in series. Yes. The third heat exchanger 2 2 0 is provided with a water pipe 2 2 OA through which water (or hot water) passes, and a refrigerant pipe 2 2 0 B through which refrigerant passes, similar to the radiator 2 2 of the first embodiment. 2 This is the action part where the refrigerant in the refrigerant pipe 2 20 B takes away the heat of hot water passing through the OA. Low temperature water at the bottom of the hot water tank 2 exits from the inlet / outlet pipe 6 A, flows into the inlet pipe 2 5 A from the inlet pipe 2 2 OA, and water cooled by the OA pipe 2 2 OA flows out from the outlet pipe 2 5 B A circulation channel 25 with a pump 26 is configured to return to the intermediate inlet pipe 6 D of the tank 2.

水路管 2 2 O Aと冷媒管 2 2 0 Bは、内側管を冷媒管 2 2 0 Bとし、外側管を水路管 2 2 O Aとする二重管構造でもよく、または、多数の伝熱フィンを水路管 2 2 O Aと冷媒管 2 2 0 Bが並列状態で貫通配置した熱交器構造であってもよい。第 1熱交換器 2 2 0 (図 1の放熱器 2 2に相当）における給湯タンク 2からの水（又は湯）との熱交換は、実施例 1で説明したことと同様である。 The water pipe 2 2 OA and the refrigerant pipe 2 2 0 B may have a double pipe structure in which the inner pipe is the refrigerant pipe 2 2 0 B and the outer pipe is the water pipe 2 2 OA, or a large number of heat transfer fins are used. A heat exchanger structure in which the water pipe 2 2 OA and the refrigerant pipe 2 2 0 B are arranged in parallel may be used. Heat exchange with the water (or hot water) from the hot water tank 2 in the first heat exchanger 2 2 0 (corresponding to the radiator 2 2 in Fig. 1) This is the same as described in 1.

先ず、ヒートポンプ式冷却加熱ユニット 2 0によって、前記所定の室内を冷房運転する場合について説明する。圧縮機 2 1で圧縮した冷媒が四方弁 4 0を通り、開いている電磁式開閉弁 4 3を通って熱交換器 4 4 でファン 4 2の運転によって放熱し、膨張装置としての膨張弁 2 3を通つて熱交換器 2 4 0 (図 1の蒸発器 2 4に相当）で蒸発して、再び四方弁 4 0を通って圧縮機 2 1へ帰還する冷凍サイクルを構成する。 First, a description will be given of a case where the predetermined room is cooled by the heat pump cooling / heating unit 20. The refrigerant compressed by the compressor 2 1 passes through the four-way valve 4 0, passes through the open electromagnetic on-off valve 4 3, dissipates heat by the operation of the fan 4 2 in the heat exchanger 4 4, and the expansion valve 2 as an expansion device 2 A refrigeration cycle that evaporates through the heat exchanger 2 40 through 3 (equivalent to the evaporator 2 4 in Fig. 1) and returns to the compressor 21 through the four-way valve 40 again is formed.

この冷房運転において、電磁式開閉弁 4 1が開いておれば、冷媒が第 3熱交換器 2 2 0の冷媒管 2 2 0 Bを流れて、実施例 1の放熱器 2 2と同様に、給湯タンク 2の底部の低温水が入出水管 6 Aから出て、流入配管 2 5 Aから水路管 2 2 O Aへ流入し、水路管 2 2 O Aで冷却された水が流出配管 2 5 Bから給湯タンク 2の中間入口管 6 Dへ戻るように、ポンプ 2 6が作動する。この場合、第 3熱交換器 2 2 0の機能は、実施例 1の放熱器 2 2と同様であるため、実施例 1で記載した事項を援用するものとする。 In this cooling operation, if the electromagnetic on-off valve 4 1 is open, the refrigerant flows through the refrigerant pipe 2 2 0 B of the third heat exchanger 2 2 0 and, similarly to the radiator 2 2 of the first embodiment, Low temperature water at the bottom of hot water tank 2 exits from the inlet / outlet pipe 6 A, flows into the inlet pipe 2 5 A from the inlet pipe 2 2 OA, and the water cooled by the OA pipe 2 2 OA from the outlet pipe 2 5 B Pump 2 6 operates to return to intermediate inlet pipe 6 D of hot water tank 2. In this case, since the function of the third heat exchanger 2 20 is the same as that of the radiator 2 2 of the first embodiment, the matters described in the first embodiment are used.

給湯タンク 2の水の加熱を向上させるためには、冷房運転においては、電磁式開閉弁 4 3を閉じて、空冷式熱交換器 4 4への冷媒の流れを阻止し、四方弁 4 0を出た冷媒が全て第 3熱交換器 2 2 0の冷媒管 2 2 0 B を流れるようにすることができる。 In order to improve the heating of the water in the hot water tank 2, in the cooling operation, the electromagnetic on-off valve 4 3 is closed to prevent the flow of refrigerant to the air-cooled heat exchanger 4 4 and the four-way valve 4 0 All of the refrigerant that has exited can flow through the refrigerant pipe 2 2 0 B of the third heat exchanger 2 2 0.

熱交換器 2 4 0でブライン（水、特定な液体）を冷却し、この冷却したブライン（水、特定な液体）をポンプ 3 4の運転によって、所定の室内の天井部に設置した熱交換部 3 5や、所定の室内の床下面部に設置した熱交換部 3 5へ供給し、冷温水槽 3 6から再び第 2熱交換器である熱交換器 2 4 0へ帰還するサイクルで循環させる方式である。熱交換部 3 5が所定の室内の天井部に設置した熱交換部 3 5である場合は、ファンによって熱交換部 3 5に所定の室内の空気が循環して、熱交換部 3 5によって所定の室内の空気が冷却されるものである。 The brine (water, specific liquid) is cooled by the heat exchanger 2 40, and the cooled brine (water, specific liquid) is cooled by the operation of the pump 3 4 and installed in the ceiling of the specified room. Supplied to the heat exchanger 35 and the heat exchanger 35 installed on the lower surface of the floor in a given room, and circulated in a cycle returning from the cold / hot water tank 36 to the heat exchanger 2 40 as the second heat exchanger again It is a method to make it. If the heat exchanger 3 5 is a heat exchanger 3 5 installed on the ceiling in a given room, As a result, the air in the predetermined room circulates in the heat exchanging section 35, and the air in the predetermined room is cooled by the heat exchanging section 35.

次に、ヒー卜ポンプ式冷却加熱ユニット 2 0によって、前記所定の室内を暖房運転する場合について説明する。暖房運転では、電磁式開閉弁 4 3が開き、四方弁 4 0が切り替わって、圧縮機 2 1で圧縮した冷媒が四方弁 4 0を通って第 2熱交換器 2 4 0で凝縮し放熱し、膨張弁 2 3を通って熱交換器 4 4へ入り蒸発する。ファン 4 2の運転によって熱交換器 4 4の熱交換が促進され、熱交換器 4 4を出た冷媒は、電磁式開閉弁 4 3と四方弁 4 0を通って圧縮機 2 1へ帰還する冷凍サイクルを構成する。また、後述のように、暖房運転開始初期のみ電磁式開閉弁 4 1が開いて、熱交換器 4 4と熱交換器 2 2 0にも冷媒が流れるが、その後は電磁式開閉弁 4 1が閉じて、熱交換器 2 2 0への冷媒の流れを遮断する。 Next, the case where the predetermined room is heated by the heat pump cooling / heating unit 20 will be described. In heating operation, the electromagnetic on-off valve 4 3 opens, the four-way valve 40 switches, and the refrigerant compressed by the compressor 21 passes through the four-way valve 40 and condenses in the second heat exchanger 24 0 to dissipate heat. Evaporates through the expansion valve 2 3 and enters the heat exchanger 4 4. The heat exchange of the heat exchanger 4 4 is promoted by the operation of the fan 4 2, and the refrigerant leaving the heat exchanger 4 4 returns to the compressor 2 1 through the electromagnetic on-off valve 4 3 and the four-way valve 4 0. Configure the refrigeration cycle. In addition, as described later, the electromagnetic on-off valve 41 opens only at the beginning of the heating operation, and the refrigerant also flows through the heat exchanger 44 and the heat exchanger 220, but thereafter, the electromagnetic on-off valve 4 1 Closes and blocks the flow of refrigerant to the heat exchanger 2 20.

ヒートポンプ式冷却加熱ュニット 2 0の暖房運転において、電磁式開閉弁 4 3は開いており、膨張弁 2 3を通った冷媒は熱交換器 4 4に流れ、熱交換器 4 4においてファン 4 2の運転によって周囲空気から吸熱する。前記所定の室内を暖房運転する場合は、通常、冬季等の低外気状況である力^ 外気温が低くなればなるほど、熱交換器 4 4がこの低外気（周囲空気）と熱交換してこの外気（周囲空気）から熱を汲み上げるヒートポンプ効果は低下する。しかし、膨張弁 2 3を通った冷媒は第 3熱交換器 2 2 0にも流れるようにすれば、水路管 2 2 O Aを通る温水から冷媒管 2 2 0 Bを通る冷媒が熱を汲み上げることにより、膨張弁 2 3を通った冷媒が熱を汲み上げる効果が向上する。即ち、膨張弁 2 3を通った冷媒の熱交換部からの熱の汲み上げ効果が向上することとなり、ヒートボンプ式冷却加熱ュニッ卜 2 0の運転効率が向上して、第 2熱交換器 2 4 0 の温度を速く高い状態にすることができる。このように、ヒートポンプ式冷却加熱ュニット 2 0の暖房運転によつて生じる第 2熱交換器 2 4 0の加熱に基づき、第 2熱交換器 2 4 0でブライン（水、特定な液体）を加熱し、この加熱したブライン（水、特定な液体）をポンプ 3 4の運転によって、所定の室内の天井部に設置した熱交換部 3 5や、所定の室内の床下面部に設置した熱交換部 3 5へ供給し、冷水 ·温水槽 3 6から再び第 2熱交換器 2 4 0へ帰還するサイクルで循環させる方式である。熱交換部 3 5が所定の室内の天井部に設置した熱交換部 3 5である場合は、ファンによって熱交換部 3 5に所定の室内の空気が循環して、熱交換部 3 5によって所定の室内の空気を暖めることができるものである。 In the heating operation of the heat pump cooling / heating unit 2 0, the electromagnetic open / close valve 4 3 is open, the refrigerant that has passed through the expansion valve 2 3 flows to the heat exchanger 4 4, and the fan 4 2 in the heat exchanger 4 4 It absorbs heat from the surrounding air by driving. When heating the predetermined room, normally, the power of low outside air conditions such as winter season ^ The lower the outside air temperature, the more the heat exchanger 4 4 exchanges heat with this low outside air (ambient air). The heat pump effect that pumps heat from the outside air (ambient air) is reduced. However, if the refrigerant passing through the expansion valve 2 3 also flows to the third heat exchanger 2 2 0, the refrigerant passing through the refrigerant pipe 2 2 0 B will pump up heat from the hot water passing through the water pipe 2 2 OA. This improves the effect of the refrigerant that has passed through the expansion valve 2 3 pumping up heat. That is, the effect of pumping the heat from the heat exchange section of the refrigerant that has passed through the expansion valve 23 is improved, and the operation efficiency of the heat pump cooling / heating unit 20 is improved, so that the second heat exchanger 2 4 The temperature of 0 can be quickly brought to a high state. In this way, based on the heating of the second heat exchanger 24 0 generated by the heating operation of the heat pump type cooling heating unit 20, the second heat exchanger 2 40 0 is blown (water, specific liquid). The heated brine (water, specific liquid) is heated by the operation of the pump 3 4 and the heat exchange unit 3 5 installed on the ceiling part of the predetermined room or the heat exchange unit installed on the lower surface of the floor of the predetermined room. This is a system in which it is circulated in a cycle in which it is supplied to section 35 and returned from the cold water / hot water tank 36 to the second heat exchanger 240. If the heat exchange unit 35 is a heat exchange unit 35 installed on the ceiling of a predetermined room, the air in the predetermined room is circulated to the heat exchange unit 35 by the fan, and the heat exchange unit 3 5 Can heat the air in a given room.

本発明では、ヒートポンプ式冷却加熱ュニット 2 0の暖房運転を開始する場合、暖房運転開始から所定時間、例えば 2分〜 5分程度の間、電磁式開閉弁 4 1を開いて膨張弁 2 3を通った冷媒が、第 1熱交換器 4 4 と第 3熱交換器 2 2 0の両方に流れるようにする。また、このとき、電磁式開閉弁 2 9を開きポンプ 2 6を運転して、第 3熱交換器 2 2 0に給湯タンク 2の水（又は湯）が流れる状態とする。前記所定時間到達又は経過後は、電磁式開閉弁 4 1を閉じ、第 1熱交換器 4 4のみに冷媒が流れる通常のヒートポンプ暖房運転サイクルに切り替え、電磁式開閉弁 2 9を閉じ、ポンプ 2 6の運転を停止する。 In the present invention, when the heating operation of the heat pump type cooling / heating unit 20 is started, the expansion valve 2 3 is opened by opening the electromagnetic on-off valve 41 for a predetermined time, for example, about 2 minutes to 5 minutes from the start of the heating operation. The refrigerant that has passed through is allowed to flow to both the first heat exchanger 4 4 and the third heat exchanger 2 20. At this time, the electromagnetic on-off valve 29 is opened and the pump 26 is operated so that the water (or hot water) in the hot water tank 2 flows into the third heat exchanger 2 20. After reaching or elapses of the predetermined time, the electromagnetic on-off valve 41 is closed, switching to a normal heat pump heating operation cycle in which refrigerant flows only in the first heat exchanger 44, the electromagnetic on-off valve 29 is closed, and the pump 2 6 Stop operation.

冬季等の低外気状況においても、上水道 4の温度は、 0 °Cよりも十分高い温度、例えば 1 5 °C程度の温度を保っているため、外気が数。 C以下の低温状況において、給湯タンク 2から供給される水の温度がこの上水道 4の温度であっても、第 3熱交換器 2 2 0がこの熱を組み上げることによって、ヒートポンプ式冷却加熱ュニット 2 0の運転効率が向上することとなる。まして、給湯タンク 2から供給される水の温度が、この上水道 4の温度よりも高い温度に加熱された状態であれば、この温水が第 3熱交換器 2 2 0へ流れることとなり、第 3熱交換器 2 2 0がこの熱を組み上げることによって、ヒートポンプ式冷却加熱ュニット 2 0の運転効率が、より一層向上するものとなる。このため、暖房運転開始時から第 2熱交換器 2 4 0の温度を速く高い状態にすることができるため、暖房運転開始時の前記所定の室内の温度の立ち上がりを速めることができる。 Even in low outdoor conditions such as winter, the temperature of water supply 4 is sufficiently higher than 0 ° C, for example, about 15 ° C, so there are several outside air. Even if the temperature of the water supplied from the hot water tank 2 is the temperature of the upper water channel 4 in a low temperature condition of C or less, the third heat exchanger 2 20 0 builds up this heat, so that the heat pump cooling heating The operating efficiency of the unit 20 will be improved. Furthermore, the temperature of the water supplied from the hot water tank 2 If the water is heated to a temperature higher than the temperature of the water supply 4, this hot water will flow to the third heat exchanger 2 20 and the third heat exchanger 2 2 0 will build up this heat, so that the heat pump The operating efficiency of the cooling and heating unit 20 will be further improved. For this reason, since the temperature of the second heat exchanger 240 can be quickly increased from the start of the heating operation, the rise of the predetermined indoor temperature at the start of the heating operation can be accelerated.

なお、上記のように、第 3熱交換器 2 2 0に冷媒が流れる時間を、暖房運転開始から所定時間、例えば 5分〜 1 0分程度に制限するのは、いつまでも第 3熱交換器 2 2 0において給湯タンク 2から供給される水 (又は湯）と熱交換させれば、給湯タンク 2内の湯温の低下を招くこととなるので、これを制限するためである。この暖房運転開始からの所定時間は、例えば 2分〜 5分程度の予め設定した一定時間にタイマ手段によって規制してもよいが、暖房される所定の室内の温度が所定温度に上昇したとき（実質的に暖房される所定の室内の温度が所定温度に上昇したことを検出するように、この所定の室内の温度の温度検知センサを設けるか、熱交換部 3 5の温度検知センサを設けるか、第 2熱交換器 2 4 0の温度を検出する温度検知センサを設ける等の手段がある）、コントローラ 3 3によって電磁式開閉弁 2 9及び 4 1を閉じ、ポンプ 2 6を停止するように制御することもできる。 As described above, the time for which the refrigerant flows into the third heat exchanger 2 20 is limited to a predetermined time from the start of the heating operation, for example, about 5 minutes to 10 minutes. This is to limit the heat exchange with the water (or hot water) supplied from the hot water supply tank 2 in the exchanger 2 20, which causes a drop in the hot water temperature in the hot water supply tank 2. The predetermined time from the start of the heating operation may be regulated by a timer means for a predetermined time period of, for example, about 2 to 5 minutes, but the temperature of the predetermined room to be heated has risen to the predetermined temperature. (Temperature detection sensor for this predetermined room temperature is installed so as to detect that the temperature of the predetermined room to be heated substantially has risen to the predetermined temperature, or the temperature detection of the heat exchange unit 35 is performed. There is a means of providing a sensor or a temperature detection sensor for detecting the temperature of the second heat exchanger 2 40, etc.), and the electromagnetic on-off valves 2 9 and 4 1 are closed by the controller 3 3, and the pump 2 6 It can also be controlled to stop.

上記では、暖房運転開始から所定時間、熱交換器 4 4と熱交換器 2 2 0の両方に冷媒が流れるが、これに替わって、暖房運転開始から所定時間、熱交換器 4 4には冷媒が流れないように電磁式開閉弁 4 3を閉じ、第 3熱交換器 2 2 0のみに冷媒が流れるように電磁式開閉弁 4 1を開くように構成し、その後、その後、開閉弁 4 3を開くと共に、開閉弁 4 1 を閉じることによって、第 1熱交換器 4 4のみに冷媒が流れる通常のヒートポンプ暖房運転サイクルに切り替え、電磁式開閉弁 2 9を閉じ、ポンプ 2 6の運転を停止する。このため、給湯タンク 2内の湯温の低下を防止できる状態となる。いずれの場合も、暖房運転開始時から第 2熱交換器 2 4 0の温度を速く高い状態に速くすることができるため、暖房運転開始時の前記所定の室内の温度の立ち上がりを速めることができる。また、熱交換器 2 2 0とポンプ 2 6の直列配管水路に並列に、電磁式開閉弁 4 5を備えた配管水路を形成した構成とする。そして、暖房運転開始時に水温検出部 2 8の下部の検出部 2 8 Dと 2 8 E、又は 2 8 Eの検出温度が所定温度よりも低い場合（例えば、外気温度に近い場合）、または、検出部 2 8 Aと 2 8 B、又は 2 8 Aの検出温度が所定温度よりも低い場合（例えば、 5 0 °Cよりも低い場合）には、電磁式開閉弁 2 9 を閉じ、電磁式開閉弁 4 5を開いた状態でポンプ 2 6を運転して、ボンプ 2 6から出て、熱交換器 2 2 0の水路管 2 2 O Aと電磁式開閉弁 4 5 を通りポンプ 2 6に帰還する水のサイクル路を形成する。 In the above, the refrigerant flows through both the heat exchanger 4 4 and the heat exchanger 2 2 0 for a predetermined time from the start of the heating operation. Instead, the heat exchanger 4 4 has a predetermined time after the start of the heating operation. The electromagnetic on-off valve 4 3 is closed so that the refrigerant does not flow, and the electromagnetic on-off valve 4 1 is opened so that the refrigerant flows only to the third heat exchanger 2 20, and then the on-off valve 4 Open 3 and open / close valve 4 1 Is closed to switch to a normal heat pump heating operation cycle in which refrigerant flows only in the first heat exchanger 44, the electromagnetic on-off valve 29 is closed, and the operation of the pump 26 is stopped. For this reason, it becomes a state which can prevent the fall of the hot water temperature in the hot water supply tank 2. In either case, since the temperature of the second heat exchanger 240 can be quickly increased to a high state from the start of heating operation, the rise of the predetermined indoor temperature at the start of heating operation can be accelerated. Can do. In addition, a pipe water passage provided with an electromagnetic on-off valve 45 is formed in parallel with the serial pipe water passage of the heat exchanger 2 20 and the pump 26. And, at the start of heating operation, when the detection temperature of the detection units 2 8 D and 2 8 E below the water temperature detection unit 2 8 is lower than a predetermined temperature (for example, close to the outside air temperature), or When the detection temperature of detectors 2 8 A and 2 8 B or 2 8 A is lower than the specified temperature (for example, lower than 50 ° C), close solenoid valve 2 9, Operate pump 2 6 with open / close valve 4 5 open, exit pump 2 6, pass through heat exchanger 2 2 0 water channel 2 2 OA and electromagnetic open / close valve 4 5 to pump 2 6 Form a cycle path for returning water.

これによつて、給湯タンク 2の底部の水温が低い場合は、この低温水が熱交換器 2 2 0の水路管 2 2 O Aに流れないようにして、熱交換器 2 2 0の熱交換の低下を抑制する。また、給湯タンク 2の上部の水温が低い場合は、給湯タンク 2の上部の水温上昇が損なわれないように、給湯タンク 2の水（又は湯）が熱交換器 2 2 0の水路管 2 2 O Aに流れないようにして、給湯タンク 2の上部の水温が加熱装置 3によって速く上昇するようにする。 As a result, when the water temperature at the bottom of the hot water tank 2 is low, this low-temperature water should not flow into the water pipe 2 2 OA of the heat exchanger 2 2 0 and the heat exchange of the heat exchanger 2 2 0 Suppresses the decline. Also, if the water temperature at the top of the hot water tank 2 is low, the water (or hot water) in the hot water tank 2 is used as the heat exchanger 2 2 0 water pipe 2 so that the rise in the water temperature at the top of the hot water tank 2 is not impaired. 2 Prevent the water from flowing into the OA so that the water temperature at the top of the hot water tank 2 rises quickly with the heating device 3.

実施例 2のヒートポンプ式冷却加熱ユニット 2 0は、圧縮機 2 1、四方弁 4 0、熱交換器 2 4 0、膨張弁 2 3、空冷式熱交換器 4 4、ファン 4 2を既存のヒートポンプ式冷凍システムとし、これに電磁式開閉弁 4 1、電磁式開閉弁 4 3、熱交換器 2 2 0 (図 1の放熱器 2 2に相当）を付加する構成とすることによって、既存のヒートポンプ式冷凍システムの利用ができるものとなり、システムの構築費用を低く抑えることができるようになる。産業上の利用可能性 The heat pump type cooling / heating unit 20 of Example 2 includes a compressor 2 1, a four-way valve 4 0, a heat exchanger 2 40, an expansion valve 2 3, an air-cooled heat exchanger 4 4, and a fan 4 2. This is a heat pump refrigeration system. 1. By adding a solenoid on / off valve 4 3 and a heat exchanger 2 2 0 (corresponding to the radiator 2 2 in Fig. 1), the existing heat pump refrigeration system can be used. Construction costs can be kept low. Industrial applicability

本発明の熱回収路付き給湯装置は、上記実施形態に限定されず、本発明の技術的範囲を逸脱しない限り、種々の形態に適用できるものである。 The hot water supply apparatus with a heat recovery path of the present invention is not limited to the above embodiment, and can be applied to various forms without departing from the technical scope of the present invention.

Claims

請求の範囲上水道が底部から供給され内部の水圧が所定の圧力状態に維持された密閉式である給湯タンクと、この給湯タンク内の水を加熱装置へ循環して加熱し、前記給湯タンクに溜めた湯を給湯タンクの上部から利用場所へ供給するようになっている給湯装置と、圧縮機で圧縮した後の冷媒の熱を放熱器で放熱し膨張装置を通って蒸発器で蒸発させて再び前記圧縮機へ帰還する循環サイクルを構成し前記蒸発器で冷却運転を可能とした冷却加熱ュニットを備え、前記放熱器で放熱される冷媒の熱を前記給湯装置で回収するように、前記放熱器を通る冷媒の熱で加熱された水を前記給湯タンクに供給する熱回収路を備えたことを特徴とする熱回収路付き給湯装置。請求項 1において、前記熱回収路は、前記給湯タンク下部の低温の水を加熱して前記給湯タンクの中温の水もしくはこの中温の水の近傍に供給することを特徴とする熱回収路付き給湯装置。上水道が底部から供給され内部の水圧が所定の庄カ状態に維持された密閉式である給湯タンクと、この給湯タンク内の水を加熱装置へ循環して加熱しこの加熱された高温水（湯）を給湯タンクの上部に設けた上部入口管から前記給湯タンク内へ戻し、給湯タンク内の高温水（湯）を給湯タンクの上部から取り出して利用場所へ供給するようになっている給湯装置と、圧縮機で圧縮した後の冷媒の熱を放熱器で放熱し膨張装置を通って蒸発器で蒸発させて再び前記庄縮機へ帰還する循環サイクルを構成し前記蒸発器で冷却運転を可能とした冷却加熱ュニッ卜と、前記放熱器で放熱される冷媒の熱を前記給湯装置で回収するように、前記放熱器を通る冷媒の熱で加熱された水を前記給湯タンクに供給する熱回収路と、前記給湯タンクの底部から前記熱回収路へ低温水を供給する流入配管と、前記熱回収路で加熱された温水を前記給湯タンクの前記上部入口管と底部との間に位置する中間入口管へ戻す流出配管を備え、前記流出配管を通る温水を前記上部入口管または前記中間入口管のいずれかに選択供給するように制御する制御弁を設けたことを特徴とする熱回収路付き給湯装置。上水道が底部から供給され内部の水圧が所定の圧力状態に維持された密閉式である給湯タンクと、この給湯タンク内の水を加熱装置へ循環して加熱しこの加熱された高温水（湯）を給湯タンクの上部に設けた上部入口管から前記給湯タンク内へ戻し、給湯タンク内の高温水（湯）を給湯タンクの上部から取り出して利用場所へ供給するようになつている給湯装置と、圧縮機で圧縮した後の冷媒の熱を放熱器で放熱し膨張装置を通って蒸発器で蒸発させて再び前記圧縮機へ帰還する循環サイクルを構成し前記蒸発器で冷却運転を可能とした冷却加熱ユニットと、前記放熱器で放熱される冷媒の熱を前記給湯装置で回収するように、前記放熱器を通る冷媒の熱で加熱された水を前記給湯タンクに供給する熱回収路と、前記給湯タンクの底部から前記熱回収路へ低温水を供給する流入配管と、前記熱回収路で加熱された温水を前記給湯ダンクの前記上部入口管と底部との間に位置する中間入口管へ戻す流出配管と、前記流出配管を通る温水を前記上部入口管または前記中間入口管のいずれかに選択供給するように制御する制御弁と、少なくとも前記給湯タンク内の上部及び中間部の水温を検出する水温検出部を設け、前記水温検出部の検出に基づき前記制御弁を制御して前記流出配管を通る温水の流れを前記上部入口管または前記中間入口管のいずれかへ切り替え制御することを特徴とする熱回収路付き給湯装置。上水道が底部から供給され内部の水圧が所定の圧力状態に維持ざれた密閉式である給湯タンクと、この給湯タンク内の水を加熱装置へ循環して加熱しこの加熱された高温水（湯）を給湯タンクの上部に設けた上部入口管から前記給湯タンク内へ戻し、給湯タンク内の高温水（湯）を給湯タンクの上部から取り出して利用場所へ供給するようになっている給湯装置と、圧縮機で圧縮した後の冷媒の熱を放熱器で放熱し膨張装置を通つて蒸発器で蒸発させて再び前記圧縮機へ帰還する循環サイクルを構成し前記蒸発器で冷却運転を可能とした冷却加熱ユニットと、前記放熱器には前放熱器を通る冷媒の熱を奪う水が通る熱回収路と、前記給湯タンクの底部の低温水が前記熱回収路へ流入配管から流入し前記熱回収路で加熱された温水が前記給湯夕ンクの中間入口管へ流出配管から戻るようにポンプを備えた循環水路を構成し、前記流出配管を通る温水を前記上部入口管または前記中間入口管のいずれかに選択供給するように制御する制御弁と、少なくとも前記給湯タンク内の上部、中間部及び下部の水温を検出する水温検出部を設け、前記水温検出部の検出に基づき前記制御弁を制御して前記流出配管を通る温水の流れを前記上部入口管または前記中間入口管のいずれかへ切り替え制御する制御要素と、前記冷却加熱ュニットは、前記圧縮機で圧縮され冷媒の熱を放熱させるための第 2の放熱器要素を備え、前記冷却加熱ュニッ卜の運転中において前記水温検出部の検出に基づき前記循環水路を水が循環する状態と循環しない状態とに制御する制御要素を備えると共に、前記水が循環していないときに前記第 2の放熱器要素が有効に作用することができるように成すことを特徴とする熱回収路付き給湯装置。前記加熱装置が稼動状態のときは前記熱回収路を水が循環しないように閉じる開閉弁を設けたことを特徴とする請求項 1乃至 5のいずれかに記載の熱回収路付き給湯装置。前記熱回収路を開閉する開閉弁を設け、前記給湯タンクの下部の水温が、所定温度より低い低温度状態では前記開閉弁を開き所定温度状態では前記開閉弁を閉じるように制御する制御要素を備えたことを特徴とする請求項 4または 5のいずれかに記載の熱回収路付き給湯装置。前記第 2の放熱器要素は、前記熱回収路に並列に前記流入配管と前記流出配管に接続された副熱交換器であり、前記給湯タンクの下部の水温が所定温度より低い低温度状態では前記副熱交換器への水の循環を止め、前記給湯タンクの下部の水温が所定温度より高いときは前記副熱交換器への水の循環を行なう動作をすることを特徴とする請求項 5乃至 7のいずれかに記載の熱回収路付き給湯装置上水道が底部から供給され内部の水圧が所定の圧力状態に維持された密閉式である給湯タンクと、この給湯タンク内の水を加熱装置へ循環して加熱しこの加熱された高温水（湯）を給湯タンクの上部に設けた上部入口管から前記給湯タンク内へ戻し、給湯タンク内の高温水（湯）を給湯タンクの上部から取り出して利用場所へ供給するようになっている給湯装置と、圧縮機で圧縮した冷媒を第 1熱交換器と膨張装置を通つて第 2熱交換器で蒸発させて再び前記圧縮機へ帰還する冷房運転サイクル、及び前記圧縮機で圧縮した冷媒を前記第 2熱交換器と膨張装置を通って前記第 1熱交換器で蒸発させて再び前記圧縮機へ帰還する暖房運転サイクルとを構成するヒートポンプ式冷却加熱ユニットを備え、前記第 1熱交換器に並列に前記冷媒が通る冷媒管と前記給湯タンクに溜めた水（又は湯）が通る水路管が熱交換状態にある第 3熱交換器を設け、前記暖房運転サイクルにおいて、暖房運転開始から所定時間、前記第 1熱交換器と第 3熱交換器に冷媒が流れ、その後、前記第 3熱交換器へ冷媒が流れないように制御する開閉弁を設けたことを特徴とする熱回収路付き給湯装置。上水道が底部から供給され内部の水圧が所定の圧力状態に維持された密閉式である給湯タンクと、この給湯タンク内の水を加熱装置へ循環して加熱しこの加熱された高温水（湯）を給湯タンクの上部に設けた上部入口管から前記給湯夕ング内へ戻し、給湯タンク内の高温水（湯）を給湯タンクの上部から取り出して利用場所へ供給するようになっている給湯装置と、圧縮機で圧縮した冷媒を第 1熱交換器と膨張装置を通って第 2熱交換器で蒸発させて再び前記圧縮機へ帰還する冷房運転サイクル、及び前記圧縮機で圧縮した冷媒を前記第 2熱交換器と膨張装置を通って前記第 1熱交換器で蒸発させて再び前記圧縮機へ帰還する暖房運転サイクルとを構成するヒートポンプ式冷却加熱ュニットを備え、前記第 1熱交換器に並列に前記冷媒が通る冷媒管と前記給湯タンクに溜めた水（又は湯）が通る水路管が熱交換状態にある第 3熱交換器を設け、前記第 3熱交換器の冷媒の流れを制御する開閉弁と、前記第 1熱交換器の冷媒のれを制御するもう 1つの開閉弁を設け、暖房運転開始から所定時間、前記第 3熱交換器のみに冷媒が流れるように、前記後者のもう 1つの開閉弁を閉じ前者の開閉弁を開き、その後、前記後者のもう 1つの開閉弁を開き、前者の開閉弁を閉じることを特徴とする熱回収路付き給湯装置。前記加熱装置が二酸化炭素冷媒を圧縮機で圧縮する冷凍装置の二酸化炭素冷媒ガスを冷却する冷媒ガス熱交換器で構成され、前記冷却加熱ュニッ卜の冷媒が H F C等の凝縮性冷媒で構成され、前記冷媒ガス熱交換器には前記給湯タンクの底部の低温水が流入し前記二酸化炭素冷媒ガスによって加熱された高温水（湯）が前記給湯タンクの上部へ戻る高温水（湯）形成路が設けられたことを特徴とする請求項 1乃至 1 0のいずれかに記載の熱回収路付き給湯装置。 Claims The hot water tank is a sealed hot water supply system in which the water supply is supplied from the bottom and the internal water pressure is maintained at a predetermined pressure, and the water in the hot water supply tank is circulated and heated to a heating device. The hot water stored in the hot water supply tank is supplied from the upper part of the hot water tank to the place of use, and the heat of the refrigerant after being compressed by the compressor is dissipated by the radiator and evaporated by the evaporator through the expansion device A recirculation cycle for returning to the compressor again, and a cooling and heating unit that enables the cooling operation by the evaporator, and recovering heat of the refrigerant radiated by the radiator by the hot water supply device, A hot water supply apparatus with a heat recovery path, comprising a heat recovery path for supplying water heated by the heat of the refrigerant passing through the radiator to the hot water supply tank. 2. The hot water supply with heat recovery path according to claim 1, wherein the heat recovery path heats low-temperature water at a lower portion of the hot water supply tank and supplies it to the middle temperature water of the hot water supply tank or the vicinity of the intermediate temperature water. apparatus. A closed hot water supply tank in which water is supplied from the bottom and the internal water pressure is maintained at a predetermined level, and the water in the hot water supply tank is circulated to a heating device and heated to heat the heated high-temperature water. (Hot water) is returned to the hot water tank through the upper inlet pipe provided at the upper part of the hot water tank, and hot water (hot water) in the hot water tank is taken out from the upper part of the hot water tank and supplied to the place of use. Heat from the hot water supply device and the refrigerant compressed by the compressor is dissipated by the radiator and evaporated through the expansion device by the evaporator. A cooling and heating unit that constitutes a circulation cycle that returns to the shrinkage machine again and enables the cooling operation by the evaporator, and heat of the refrigerant that is radiated by the radiator is recovered by the hot water supply device, A heat recovery path for supplying water heated by the heat of the refrigerant passing through the radiator to the hot water supply tank, an inflow pipe for supplying low-temperature water from the bottom of the hot water supply tank to the heat recovery path, and the heat recovery path. An outlet pipe for returning heated hot water to an intermediate inlet pipe located between the upper inlet pipe and the bottom of the hot water tank, and hot water passing through the outlet pipe is either the upper inlet pipe or the intermediate inlet pipe A hot water supply apparatus with a heat recovery path is provided, which is provided with a control valve for controlling to be selectively supplied to the water. A closed hot water supply tank in which water supply is supplied from the bottom and the internal water pressure is maintained in a predetermined pressure state, and the heated high-temperature water (circulated and heated to the heating device) Hot water is returned to the hot water tank from the upper inlet pipe provided at the upper part of the hot water tank, and hot water (hot water) in the hot water tank is taken out from the upper part of the hot water tank and supplied to the use place. And a circulation cycle in which the heat of the refrigerant after being compressed by the compressor is dissipated by the radiator, evaporated through the expansion device by the evaporator and returned to the compressor again, and the evaporator performs the cooling operation. Cooling and heating unit made possible, and heat recovery for supplying water heated by the refrigerant heat passing through the radiator to the hot water supply tank so that the heat of the refrigerant radiated by the radiator is recovered by the hot water supply device Road and the hot water supply tongue An inflow pipe for supplying low-temperature water from the bottom of the hot water recovery path to the heat recovery path, and an outflow pipe for returning the hot water heated in the heat recovery path to an intermediate inlet pipe positioned between the upper inlet pipe and the bottom of the hot water supply dunk When, A control valve that controls to selectively supply hot water passing through the outflow pipe to either the upper inlet pipe or the intermediate inlet pipe, and a water temperature detector that detects at least the water temperature of the upper and middle parts in the hot water tank. Provided, and controls the control valve based on the detection of the water temperature detection unit to switch the flow of hot water passing through the outflow pipe to the upper inlet pipe or the intermediate inlet pipe. Hot water supply system with a recovery path. A closed hot water supply tank in which water supply is supplied from the bottom and the internal water pressure is maintained at a predetermined pressure state, and water in the hot water supply tank is circulated to a heating device and heated to heat this hot water ( Hot water is returned to the hot water tank from the upper inlet pipe provided at the upper part of the hot water tank, and hot water (hot water) in the hot water tank is taken out from the upper part of the hot water tank and supplied to the place of use. And a circulation cycle in which the heat of the refrigerant after being compressed by the compressor is radiated by the radiator, evaporated through the expansion device by the evaporator, and returned to the compressor again, and the evaporator is used for cooling operation. A cooling and heating unit that is enabled, a heat recovery path through which water deprives the heat of the refrigerant passing through the front radiator passes through the radiator, and low-temperature water at the bottom of the hot water supply tank flows into the heat recovery path from an inflow pipe. The temperature heated in the heat recovery path Constitutes a circulation channel with a pump so as to return from the outflow pipe to the intermediate inlet pipe of the hot water supply tank, and selectively supplies hot water passing through the outflow pipe to either the upper inlet pipe or the intermediate inlet pipe A control valve that controls the water temperature, and a water temperature detection unit that detects at least the water temperature of the upper, middle, and lower parts in the hot water tank, and controls the control valve based on the detection of the water temperature detection unit to control the outflow pipe A control element that switches and controls the flow of hot water passing through either the upper inlet pipe or the intermediate inlet pipe, and the cooling and heating unit is a second compressor that is compressed by the compressor and radiates the heat of the refrigerant. A radiator element, and a control element that controls the circulating water channel in a circulating state and a non-circulating state based on the detection of the water temperature detecting unit during operation of the cooling and heating unit. A hot water supply apparatus with a heat recovery path, characterized in that the second radiator element can act effectively when the water is not circulating. 6. The hot water supply apparatus with a heat recovery path according to claim 1, further comprising an on-off valve that closes the heat recovery path so that water does not circulate when the heating apparatus is in operation. An open / close valve that opens and closes the heat recovery path; and a control element that controls the open / close valve to open and close the open / close valve when the water temperature in the lower part of the hot water tank is lower than a predetermined temperature. 6. A hot water supply apparatus with a heat recovery path according to claim 4, wherein the hot water supply apparatus is provided. The second radiator element is a sub heat exchanger connected to the inflow pipe and the outflow pipe in parallel with the heat recovery path, and in a low temperature state where the water temperature in the lower part of the hot water supply tank is lower than a predetermined temperature. 6. The water circulation to the sub heat exchanger is stopped, and when the water temperature in the lower part of the hot water supply tank is higher than a predetermined temperature, the water is circulated to the sub heat exchanger. Supply with heat recovery path according to any one of 7 Hot water device A closed hot water supply tank in which the water supply is supplied from the bottom and the internal water pressure is maintained at a predetermined pressure, and the water in the hot water supply tank is circulated and heated to a heating device, and this heated high temperature Water (hot water) is returned to the hot water tank through the upper inlet pipe provided at the upper part of the hot water tank, and hot water (hot water) in the hot water tank is taken out from the upper part of the hot water tank and supplied to the use place. A hot water supply system, a cooling operation cycle in which the refrigerant compressed by the compressor evaporates in the second heat exchanger through the first heat exchanger and the expansion device, and returns to the compressor again, and the pressure in the compressor A heat pump type cooling / heating unit comprising: a heating operation cycle in which the compressed refrigerant passes through the second heat exchanger and the expansion device and evaporates in the first heat exchanger and returns to the compressor again. Parallel to the first heat exchanger A third heat exchanger in which a refrigerant pipe through which the refrigerant passes and a water pipe through which water (or hot water) stored in the hot water tank passes is in a heat exchange state, and in the heating operation cycle, a predetermined time from the start of the heating operation A hot water supply with a heat recovery path is provided, wherein an on-off valve is provided for controlling the refrigerant to flow to the first heat exchanger and the third heat exchanger, and then preventing the refrigerant from flowing to the third heat exchanger. apparatus. A closed hot water supply tank in which water supply is supplied from the bottom and the internal water pressure is maintained in a predetermined pressure state, and the heated high-temperature water (circulated and heated to the heating device) The hot water is returned to the hot water evening through the upper inlet pipe provided at the upper part of the hot water tank, and the hot water (hot water) in the hot water tank is taken out from the upper part of the hot water tank. And a cooling operation cycle in which the refrigerant compressed by the compressor passes through the first heat exchanger and the expansion device, evaporates in the second heat exchanger, and returns to the compressor. And a heating operation cycle in which the refrigerant compressed by the compressor evaporates in the first heat exchanger through the second heat exchanger and the expansion device and returns to the compressor again. A cooling and heating unit is provided, and a third heat exchanger in which a refrigerant pipe through which the refrigerant passes in parallel with the first heat exchanger and a water pipe through which water (or hot water) stored in the hot water supply tank passes is provided. An on-off valve for controlling the flow of the refrigerant in the third heat exchanger and another on-off valve for controlling the flow of the refrigerant in the first heat exchanger, and a predetermined time from the start of the heating operation. 3 The other of the latter so that the refrigerant flows only in the heat exchanger. A hot water supply apparatus with a heat recovery path, wherein one on-off valve is closed, the former on-off valve is opened, then the other on-off valve is opened, and the former on-off valve is closed. The heating device is composed of a refrigerant gas heat exchanger that cools carbon dioxide refrigerant gas of a refrigeration device that compresses carbon dioxide refrigerant with a compressor, and the refrigerant of the cooling and heating unit is composed of a condensable refrigerant such as HFC. Low temperature water at the bottom of the hot water tank flows into the refrigerant gas heat exchanger, and the high temperature water (hot water) heated by the carbon dioxide refrigerant gas returns to the top of the hot water tank. The hot water supply apparatus with a heat recovery path according to any one of claims 1 to 10, wherein the water supply apparatus is provided.