JP2010167988A

JP2010167988A - Ventilation heat recovery system and vehicular air conditioning device

Info

Publication number: JP2010167988A
Application number: JP2009014191A
Authority: JP
Inventors: Takashi Fujita; 隆司藤田; Kojiro Nakamura; 康次郎中村
Original assignee: Calsonic Kansei Corp
Current assignee: Marelli Corp
Priority date: 2009-01-26
Filing date: 2009-01-26
Publication date: 2010-08-05
Anticipated expiration: 2029-01-26
Also published as: JP5243281B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation heat recovery system for improving heat recovery efficiency during recovering ventilation heat with a simple structure in which a ventilation heat recovery device and a coolant circulation system of the vehicular air conditioning device are respectively independent. <P>SOLUTION: The ventilation heat recovery system includes an inside air delivery passage 4 communicating the inside and outside of the cabin and delivering air in the cabin from inside of the cabin to outside of the cabin, an outside air introduction passage 5 communicating the inside and outside of the cabin and introducing the outside air from outside of the cabin to inside of the cabin, the ventilation heat recovery device 6 provided at the inside air delivery passage 4 and recovering the heat of the air delivered from the inside air delivery passage 4, a recovery heat radiator 7 provided at the outside air introduction passage 5 and radiating the heat to the air introduced from the outside air introduction passage 5, a heat transfer means 8 transferring the heat between the ventilation heat recovery device 6 and the recovery heat radiator 7, and a heat storage device 20 provided at the heat transfer means 8 and storing heat transferred by the heat transfer means 8, thus being independent from the coolant circulation system (heat pump cycle) 9 of the vehicular air conditioning device 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、車両用空気調和装置に関し、特に、換気熱を回収して車両空気調和に利用する換気熱回収システム及び車両用空気調和装置に関する。 The present invention relates to a vehicle air conditioner, and more particularly to a ventilation heat recovery system and a vehicle air conditioner that recover ventilation heat and use it for vehicle air conditioning.

一般に、車室内を暖房で暖める際は、エンジン冷却水を車室内へ循環させ、ヒーターコアにより空気を暖めることで暖房を行っている。 In general, when the vehicle interior is heated by heating, the engine cooling water is circulated into the vehicle interior, and the air is heated by a heater core.

しかし、エンジンの効率化に伴って低発熱エンジン等が利用されるようになり、エンジンからの排熱利用が困難になってきている。更に、電気自動車等のエンジンを持たない自動車においては、エンジンからの排熱を利用せずに暖房することが必要とされている。 However, as the efficiency of the engine increases, a low heat generation engine or the like has been used, and it has become difficult to use exhaust heat from the engine. Furthermore, in an automobile such as an electric vehicle that does not have an engine, it is necessary to heat the vehicle without using exhaust heat from the engine.

このため、従来、自動車用空調装置として利用されているエアコンサイクルを適用し、フロンガス等の冷媒で暖房を可能とした方法が提案されている。この方法は、冷房の際に用いる冷房循環系を循環する冷媒を、冷房の際と逆方向に循環させて暖房も可能とした方法であり、コンプレッサにより高温高圧に圧縮した冷媒を熱交換器（冷房時はエバポレータとして機能する）に導入して、外気導入した冷たい空気を暖める方法である所謂、ヒートポンプサイクルと呼ばれるシステムである。 For this reason, conventionally, a method has been proposed in which an air-conditioner cycle used as an air conditioner for automobiles is applied and heating is possible with a refrigerant such as chlorofluorocarbon. This method is a method in which the refrigerant circulating in the cooling circulation system used for cooling is circulated in the opposite direction to that for cooling so that heating is also possible. This is a system called a heat pump cycle, which is a method of heating the cool air introduced into the outside air by introducing it into the evaporator during cooling.

この方法では、コンプレッサの動力により車室内に吹き出される空気の温度を適温にしているため、外気導入した冷たい空気が例えば−２０℃のように低外気温である場合には、コンプレッサの動力を大量に必要とする。 In this method, since the temperature of the air blown into the passenger compartment by the power of the compressor is adjusted to an appropriate temperature, when the cold air introduced into the outside air has a low outside air temperature such as −20 ° C., the power of the compressor is reduced. Requires a large amount.

一方、電気自動車等の場合には、消費電力に応じて航続距離が変わるため、暖房による消費電力をできる限り少なく抑える必要があり、そのためには、暖房する際の換気負荷を低減させることが望まれている。 On the other hand, in the case of an electric vehicle or the like, since the cruising distance changes according to the power consumption, it is necessary to reduce the power consumption due to heating as much as possible. For this purpose, it is desired to reduce the ventilation load during heating. It is rare.

そこで、例えば、ヒートポンプサイクルを使用して暖房する方法を採用する自動車用空調装置であって、車室内外を連通し車室内の空気を車室外へ導出する換気用の内気導出路に配設した排熱回収器（排気熱回収器）を、ヒートポンプサイクルに対して並列に接続するという技術が提案されている（例えば、特許文献１参照。）。 Therefore, for example, an automotive air conditioner that employs a method of heating using a heat pump cycle, and is disposed in a ventilation internal air outlet path that communicates the interior and exterior of the vehicle interior and derives the air inside the vehicle interior to the exterior of the vehicle interior. A technique has been proposed in which an exhaust heat recovery device (exhaust heat recovery device) is connected in parallel to a heat pump cycle (see, for example, Patent Document 1).

特許文献１に記載の構成によれば、外気導入を行い暖房する場合には、冷房はヒートポンプサイクルのみならず排熱回収器にも流動するため、換気によって車室外に導出される空気から熱を汲み上げることができ、エネルギーの無駄な消費を防止することができる。 According to the configuration described in Patent Document 1, when the outside air is introduced and heated, the cooling flows not only to the heat pump cycle but also to the exhaust heat recovery unit. It can be pumped up and wasteful consumption of energy can be prevented.

しかしながら、特許文献１に記載の構成によると、排熱回収器とヒートポンプサイクルとを連通させる管路がヒートポンプサイクルと一体化しているため、ヒートポンプサイクル内を流動する冷媒と管路内を流動する冷媒とが共有されている。このため、このような管路を既存のヒートポンプサイクルに新たに取り付けようとするのは困難である。更に、このような管路を設ける場合には、冷媒の流れを制御するためにコントローラ、電磁弁等を設けることも必要となり、回路が複雑になるだけでなく部品点数も増加し構造が複雑になる。しかも、構造が複雑になることで、温度制御のシステム全体に影響を及ぼすため、実用は困難である。 However, according to the configuration described in Patent Document 1, since the pipe that communicates the exhaust heat recovery device and the heat pump cycle is integrated with the heat pump cycle, the refrigerant that flows in the heat pump cycle and the refrigerant that flows in the pipe And are shared. For this reason, it is difficult to newly attach such a pipe line to an existing heat pump cycle. Further, when such a pipe line is provided, it is necessary to provide a controller, a solenoid valve, etc. in order to control the flow of the refrigerant, which not only complicates the circuit but also increases the number of parts and the structure. Become. In addition, since the structure is complicated, the entire temperature control system is affected, so that practical use is difficult.

実開平６−６０２４号公報Japanese Utility Model Publication No. 6-6024

本発明は上記実情に鑑みてなされたものであって、換気熱回収器と車両用空気調和装置の冷媒循環系がそれぞれ独立している単純構造であり、換気熱回収時の熱回収効率を向上し得る換気熱回収システム及びそれを用いた車両用空気調和装置を提供することを目的とする。 The present invention has been made in view of the above circumstances, and has a simple structure in which the ventilation heat recovery device and the refrigerant circulation system of the vehicle air conditioner are independent of each other, and improves the heat recovery efficiency during the recovery of the ventilation heat. An object of the present invention is to provide a ventilating heat recovery system and a vehicle air conditioner using the same.

本願発明の一態様によれば、車室内外を連通し、車室内の空気を車室内から車室外へ導出する内気導出路と、車室内外を連通し、外気を車室外から車室内へ導入する外気導入路と、内気導出路に設けられ、内気導出路から導出される空気の熱を回収する換気熱回収器と、外気導入路に設けられ、外気導入路から導入される空気に熱を放熱する回収熱放熱器と、換気熱回収器と回収熱放熱器との間で熱を伝える熱移動手段と、熱移動手段に設けられ、熱移動手段で伝えられる熱を蓄熱する蓄熱器とを備え、車両用空気調和装置の冷媒循環系から独立している換気熱回収システムであることを要旨とする。 According to one aspect of the present invention, the inside and outside of the vehicle interior communicates, and the inside air outlet path for deriving the air inside the vehicle compartment from the interior of the vehicle interior to the outside of the vehicle interior communicates with the outside of the vehicle interior and introduces the outside air from the outside of the vehicle interior to the interior of the vehicle interior. A ventilation heat recovery unit for recovering heat of the air derived from the internal air extraction path, and an external air introduction path for providing heat to the air introduced from the external air introduction path. A recovered heat radiator that dissipates heat, a heat transfer means that transfers heat between the ventilation heat recoverer and the recovered heat radiator, and a heat accumulator that is provided in the heat transfer means and stores heat transferred by the heat transfer means. And a ventilation heat recovery system that is independent of the refrigerant circulation system of the vehicle air conditioner.

本願発明の他の態様によれば、請求項１〜６のいずれか１項に記載の換気熱回収システムを有している車両用空気調和装置であることを要旨とする。 According to the other aspect of this invention, it makes it a summary to be an air conditioning apparatus for vehicles which has the ventilation heat recovery system of any one of Claims 1-6.

本発明によれば、換気熱回収器と車両用空気調和装置の冷媒循環系がそれぞれ独立している単純構造であり、換気熱回収時の熱回収効率を向上し得る換気熱回収システム及びそれを用いた車両用空気調和装置を提供することができる。 According to the present invention, a ventilation heat recovery system capable of improving the heat recovery efficiency at the time of recovery of ventilation heat, and a simple structure in which the ventilation heat recovery unit and the refrigerant circulation system of the vehicle air conditioner are independent of each other, and The used vehicle air conditioner can be provided.

本発明の第１の実施の形態に係る換気熱回収システム及びそれを用いた車両用空気調和装置が設けられている車を上方からの平面透視図である。1 is a plan perspective view from above of a vehicle provided with a ventilation heat recovery system according to a first embodiment of the present invention and a vehicle air conditioner using the same. 本発明の第１の実施の形態に係る換気熱回収システムの熱移動手段の詳細を示す拡大図である。It is an enlarged view which shows the detail of the heat transfer means of the ventilation heat recovery system which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係る換気熱回収システムの第１制御弁及び第２制御弁が行う制御を示す表である。It is a table | surface which shows the control which the 1st control valve and 2nd control valve of the ventilation heat recovery system which concern on the 1st Embodiment of this invention perform. 本発明の第１の実施の形態に係る換気熱回収システムの蓄熱器による熱エネルギー回収分のイメージを示すグラフである。It is a graph which shows the image for the amount of thermal energy recovery by the heat accumulator of the ventilation heat recovery system which concerns on the 1st Embodiment of this invention. 本発明の第２の実施の形態に係る換気熱回収システムの熱移動手段の詳細を示す拡大図である。It is an enlarged view which shows the detail of the heat transfer means of the ventilation heat recovery system which concerns on the 2nd Embodiment of this invention.

以下に図面を参照して、本発明の実施の形態を説明する。以下の図面の記載において、同一又は類似の部分には同一又は類似の符号で表している。但し、図面は模式的なものであり、厚みと平面寸法との関係、各層の厚みの比率等は現実のものとは異なる。したがって、具体的な厚みや寸法は以下の説明を照らし合わせて判断するべきものである。また、図面相互間においても互いの寸法の関係や比率が異なる部分が含まれていることは勿論である。 Embodiments of the present invention will be described below with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, the drawings are schematic, and the relationship between the thickness and the planar dimensions, the ratio of the thickness of each layer, and the like are different from the actual ones. Therefore, specific thicknesses and dimensions should be determined in light of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

（第1の実施の形態）
図１は、本発明の第１の実施の形態に係る換気熱回収システム１及びそれを用いた車両用空気調和装置２が設けられている車１００を上方から見た状態を示す平面透視図である。図１において、車１００の前方向が左を向くように示されている。 (First embodiment)
FIG. 1 is a perspective plan view showing a state in which a vehicle 100 provided with a ventilation heat recovery system 1 and a vehicle air conditioner 2 using the ventilation heat recovery system 1 according to the first embodiment of the present invention is viewed from above. is there. In FIG. 1, the front direction of the car 100 is shown facing left.

本発明の第１の実施の形態に係る換気熱回収システム１は、図１に示すように、車室内外を連通し、車室内の空気を車室内から車室外へ導出する内気導出路４と、車室内外を連通し、外気を車室外から車室内へ導入する外気導入路５と、内気導出路４に設けられ、内気導出路４から導出される空気の熱を回収する換気熱回収器６と、外気導入路５に設けられ、外気導入路５から導入される空気に熱を放熱する回収熱放熱器７と、換気熱回収器６と回収熱放熱器７との間で熱を伝える熱移動手段８と、熱移動手段８に設けられ、熱移動手段８で伝えられる熱を蓄熱する蓄熱器２０とを備え、車両用空気調和装置２の冷媒循環系（ヒートポンプサイクル）９から独立している。 As shown in FIG. 1, the ventilation heat recovery system 1 according to the first embodiment of the present invention communicates with the outside of the vehicle interior, and extracts the air in the vehicle interior from the vehicle interior to the outside of the vehicle interior. A ventilation heat recovery device that communicates with the outside of the vehicle interior and that is provided in the outside air introduction passage 5 for introducing outside air from the outside of the vehicle compartment to the inside of the vehicle compartment and the inside air outlet passage 4 and collects the heat of the air derived from the inside air outlet passage 4. 6 is provided in the outside air introduction path 5 and transfers heat between the recovery heat radiator 7 that radiates heat to the air introduced from the outside air introduction path 5, and the ventilation heat recovery unit 6 and the recovery heat radiator 7. A heat transfer means 8 and a heat accumulator 20 provided in the heat transfer means 8 for storing heat transferred by the heat transfer means 8, and independent of the refrigerant circulation system (heat pump cycle) 9 of the vehicle air conditioner 2. ing.

内気導出路４及び外気導入路５は、一端が車室内側に開口し、他端が車室外側に開口した通路である。 The inside air outlet passage 4 and the outside air introduction passage 5 are passages having one end opened to the vehicle interior side and the other end opened to the vehicle compartment outside.

内気導出路４には、内気導出路４から導出される車室内の空気を換気熱回収器６に吹き付けるための換気ファン１９が設けられている。換気ファン１９は、内気導出路４内の空気を換気熱回収器６へ送風することを助ける役割であるため、内気導出路４内であって、換気熱回収器６より内部に設けられる。 The inside air outlet path 4 is provided with a ventilation fan 19 for blowing the air in the vehicle compartment derived from the inside air outlet path 4 to the ventilation heat recovery unit 6. The ventilation fan 19 has a role of helping air in the inside air outlet passage 4 to be blown to the ventilation heat recovery unit 6, and thus is provided in the inside air outlet passage 4 and inside the ventilation heat recovery unit 6.

尚、車室内の換気は走行により発生するラム圧による導入導出も行われており、換気ファン１９が必要とならない場合もある。 In addition, the ventilation in the passenger compartment is introduced and led out by the ram pressure generated by traveling, and the ventilation fan 19 may not be necessary.

外気導入路５は、本実施の形態においては内気循環路と独立しているものについて説明するが、例えば、内気循環路と外気導入路５とが合流する構成であって、内気循環路が閉じられて外気導入路５が開いている場合は、その合流した部分も含めて外気導入路５となる。 In the present embodiment, the outside air introduction path 5 will be described as being independent of the inside air circulation path. For example, the outside air introduction path 5 and the outside air introduction path 5 are joined, and the inside air circulation path is closed. When the outside air introduction path 5 is opened, the outside air introduction path 5 is formed including the merged portion.

車１００の前部側には、冷房を行う際に使用する冷媒循環系９が備えられている。冷媒循環系９は、コンデンサ１０、リキッドタンク１１、コンプレッサ１２、エバポレータ１３、膨張弁１４によって構成され、冷媒を循環させることで外気導入路５に位置しているエバポレータ１３から冷風が車室内に流れる。 A refrigerant circulation system 9 used for cooling is provided on the front side of the car 100. The refrigerant circulation system 9 is composed of a condenser 10, a liquid tank 11, a compressor 12, an evaporator 13, and an expansion valve 14. By circulating the refrigerant, cold air flows from the evaporator 13 located in the outside air introduction path 5 into the vehicle interior. .

更に、車１００の前部側には、暖房を行う際に使用するエンジン及び温水生成装置等の熱源３とヒーターコア１５が備えられている。ヒーターコア１５は、外気導入路５においてエバポレータ１３よりも車室内側の開口付近に位置している。 Furthermore, a heat source 3 and a heater core 15 such as an engine and a hot water generator used for heating are provided on the front side of the car 100. The heater core 15 is located near the opening on the vehicle interior side of the evaporator 13 in the outside air introduction path 5.

図２は、図１の熱移動手段８の詳細を示す部分拡大図である。熱移動手段８は、図２に示すように、換気熱回収器６から回収熱放熱器７へ向かって熱移動用の媒体１７が流れる経路であり、蓄熱器２０を経由する経路、及び蓄熱器２０の入口と出口を繋いで蓄熱器２０を経由せずにバイパスする第１バイパス経路２２ａを有する第１経路１６ａと、回収熱放熱器７から換気熱回収器６へ向かって熱移動用の媒体１７が流れる経路であり、蓄熱器２０を経由する経路、及び蓄熱器２０の入口と出口を繋いで蓄熱器２０を経由せずにバイパスする第２バイパス経路２２ｂを有する第２経路１６ｂと、第１経路１６ａに設けられ、第１バイパス経路２２ａを経由するか否かを制御する第１制御弁２３ａと、第２経路１６ｂに設けられ、第２バイパス経路２２ｂを経由するか否かを制御する第２制御弁２３ｂとを備える。 FIG. 2 is a partially enlarged view showing details of the heat transfer means 8 of FIG. As shown in FIG. 2, the heat transfer means 8 is a path through which the heat transfer medium 17 flows from the ventilation heat recovery unit 6 toward the recovery heat radiator 7, a path through the heat storage unit 20, and a heat storage unit. A first path 16a having a first bypass path 22a that connects the inlet and the outlet of 20 and bypasses without passing through the regenerator 20, and a medium for heat transfer from the recovered heat radiator 7 toward the ventilation heat recovery apparatus 6 17 is a path through which the second path 16b has a path that passes through the regenerator 20, a second bypass path 22b that connects the inlet and outlet of the regenerator 20 and bypasses without passing through the regenerator 20. A first control valve 23a that is provided in the first path 16a and controls whether or not to pass through the first bypass path 22a, and is provided in the second path 16b and controls whether or not to pass through the second bypass path 22b. The second control valve 23b Obtain.

熱移動手段８は、不凍液等の媒体１７を、換気熱回収器６、第１経路１６ａ、回収熱放熱器７、及び第２経路１６ｂで構成される系を循環させるウォーターポンプ１８が設けられている。 The heat transfer means 8 is provided with a water pump 18 for circulating a medium 17 such as an antifreeze liquid through a system constituted by the ventilation heat recovery device 6, the first path 16a, the recovery heat radiator 7, and the second path 16b. Yes.

第１経路１６ａ及び第２経路１６ｂは、不凍液等の媒体１７が流れる管路である。第１経路１６ａ及び第２経路１６ｂは、熱が外部へ放熱されることを防ぐために周囲を断熱材等で覆われていることが好ましい。 The first path 16a and the second path 16b are pipes through which a medium 17 such as an antifreeze liquid flows. The first path 16a and the second path 16b are preferably covered with a heat insulating material or the like in order to prevent heat from being radiated to the outside.

蓄熱器２０の内部には、第１経路１６ａと第２経路１６ｂに連結された夫々の第１熱交換部２１ａと第２熱交換部２１ｂがあり、第１熱交換部２１ａ及び第２熱交換部２１ｂと蓄熱器２０の間に蓄熱材（図示せず）が充填されている。第１熱交換部２１ａ及び第２熱交換部２１ｂは、第１経路１６ａ及び第２経路１６ｂのそれぞれに流れる媒体１７と熱交換する。蓄熱材は、第１熱交換部２１ａ及び第２熱交換部２１ｂを介して、媒体１７からの熱を蓄熱したり、蓄熱した熱を媒体１７に放熱することで熱交換を行うことができる。蓄熱材は、流動性があるものが好ましく、相変化するものでもよい。蓄熱材としては、例えば、不凍液、パラフィン系、無機塩系等を用いることができる。蓄熱器２０は、蓄熱材を攪拌する機能を備えることが好ましい。 Inside the heat accumulator 20, there are a first heat exchange section 21a and a second heat exchange section 21b connected to the first path 16a and the second path 16b, respectively, and the first heat exchange section 21a and the second heat exchange section 21b. A heat storage material (not shown) is filled between the portion 21 b and the heat storage device 20. The first heat exchange unit 21a and the second heat exchange unit 21b exchange heat with the medium 17 flowing in each of the first path 16a and the second path 16b. The heat storage material can perform heat exchange by storing heat from the medium 17 or dissipating the stored heat to the medium 17 via the first heat exchange unit 21a and the second heat exchange unit 21b. The heat storage material is preferably fluid and may change phase. As the heat storage material, for example, an antifreeze, paraffin, inorganic salt, or the like can be used. It is preferable that the heat storage device 20 has a function of stirring the heat storage material.

次に、第１の実施の形態に係る換気熱回収システム１及びそれを用いた車両用空気調和装置２により暖房を行う際の作用を説明する。 Next, the effect | action at the time of heating with the ventilation heat recovery system 1 which concerns on 1st Embodiment, and the vehicle air conditioner 2 using the same is demonstrated.

車室内を暖房することで暖める場合、熱源３により暖められた水を車室内側へ循環させるが、内気循環を行うと、人から発生する湿度等により窓の曇りが発生する。このため、通常では外気導入を行うこととなる。このとき、外気導入路５から導入される外気をヒーターコア１５で暖めることで車室内へ暖かい空気を送る。 When the vehicle interior is warmed by heating, the water heated by the heat source 3 is circulated to the vehicle interior side. However, when the inside air circulation is performed, the window is clouded due to humidity generated by a person. For this reason, outside air is usually introduced. At this time, warm air is sent into the vehicle interior by heating the outside air introduced from the outside air introduction path 5 by the heater core 15.

更に、換気によって車室内の空気は内気導出路４から導出され、換気ファン１９により換気熱回収器６に送風されることで、換気熱回収器６の内部の媒体１７との間で熱交換が行われ、車室内の暖まった熱が回収される。 Further, the air in the vehicle compartment is led out from the inside air outlet passage 4 by ventilation, and is blown to the ventilation heat recovery unit 6 by the ventilation fan 19, so that heat exchange with the medium 17 inside the ventilation heat recovery unit 6 is performed. This is done to recover the warm heat in the passenger compartment.

そして、ウォーターポンプ１８で媒体１７が循環されることで、媒体１７は換気熱回収器６から第１経路１６ａを流れる。循環する媒体１７が第１制御弁２３ａに到達すると、第１制御弁２３ａは、媒体１７が蓄熱器２０を経由する経路、及び蓄熱器２０の入口と出口を繋いで蓄熱器２０を経由せずにバイパスする第１バイパス経路２２ａのうちいずれを経由するかの制御をする。 Then, the medium 17 is circulated by the water pump 18 so that the medium 17 flows from the ventilation heat recovery device 6 through the first path 16a. When the circulating medium 17 reaches the first control valve 23a, the first control valve 23a connects the path through which the medium 17 passes through the heat accumulator 20, and the inlet and outlet of the heat accumulator 20, and does not pass through the heat accumulator 20. Which of the first bypass paths 22a to be bypassed is controlled.

第１制御弁２３ａが行う制御としては、図３の表の１行目に示すように、蓄熱器２０の蓄熱材温度が車室内設定温度（例えば、２５℃）より低くて、車室内の車室内温度も車室内設定温度より低い場合は、媒体１７が第１バイパス経路２２ａを経由する制御を行う。 As the control performed by the first control valve 23a, as shown in the first row of the table of FIG. 3, the temperature of the heat storage material of the heat accumulator 20 is lower than the vehicle interior set temperature (for example, 25 ° C.), When the room temperature is also lower than the vehicle interior set temperature, the medium 17 is controlled to pass through the first bypass path 22a.

また、第１制御弁２３ａが行う制御としては、図３の表の２行目に示すように、蓄熱器２０の蓄熱材温度が車室内設定温度より低くて、車室内の車室内温度が車室内設定温度より高い場合は、媒体１７が第１バイパス経路２２ａを経由する制御を行う。 As the control performed by the first control valve 23a, as shown in the second row of the table of FIG. 3, the temperature of the heat storage material of the heat accumulator 20 is lower than the set temperature in the vehicle interior, and the vehicle interior temperature in the vehicle interior is the vehicle temperature. When the temperature is higher than the indoor set temperature, the medium 17 performs control through the first bypass path 22a.

また、第１制御弁２３ａが行う制御としては、図３の表の３行目に示すように、蓄熱器２０の蓄熱材温度が車室内設定温度より高くて、車室内の車室内温度が車室内設定温度より低い場合は、媒体１７が蓄熱器２０を経由する制御を行う。媒体１７が蓄熱器２０を経由する場合、蓄熱器２０において、媒体１７と第１熱交換部２１ａとの間で熱交換が行われ、蓄熱器２０の熱が媒体１７に放熱される。 Further, as the control performed by the first control valve 23a, as shown in the third row of the table of FIG. 3, the temperature of the heat storage material of the heat accumulator 20 is higher than the set temperature in the vehicle interior, and the vehicle interior temperature in the vehicle interior is When the temperature is lower than the indoor set temperature, the medium 17 performs control through the heat accumulator 20. When the medium 17 passes through the regenerator 20, heat exchange is performed between the medium 17 and the first heat exchange unit 21 a in the regenerator 20, and the heat of the regenerator 20 is radiated to the medium 17.

更に、ウォーターポンプ１８で媒体１７が循環されることで、媒体１７は回収熱放熱器７に到達する。そして、熱は回収熱放熱器７において、外気導入路５に導入された外気の冷たい空気と媒体１７との間で熱交換が行われて、外気導入路５の外気を暖める。 Further, the medium 17 is circulated by the water pump 18, so that the medium 17 reaches the recovered heat radiator 7. Then, heat is exchanged between the cold air of the outside air introduced into the outside air introduction path 5 and the medium 17 in the recovered heat radiator 7 to warm the outside air in the outside air introduction path 5.

その後、換気熱回収システム１によって暖められた空気は、ヒーターコア１５で更に暖められて、車室内へ送風され、車室内を暖かくする。 Thereafter, the air warmed by the ventilation heat recovery system 1 is further warmed by the heater core 15 and is blown into the passenger compartment to warm the passenger compartment.

尚、回収熱放熱器７で放熱された後の媒体１７は、第２経路１６ｂを通って第２制御弁２３ｂに到達する。媒体１７が第２制御弁２３ｂに到達すると、第２制御弁２３ｂは、媒体１７が蓄熱器２０を経由する経路、及び蓄熱器２０の入口と出口を繋いで蓄熱器２０を経由せずにバイパスする第２バイパス経路２２ｂのうちいずれを経由するかの制御をする。 In addition, the medium 17 after being radiated by the recovered heat radiator 7 reaches the second control valve 23b through the second path 16b. When the medium 17 reaches the second control valve 23b, the second control valve 23b bypasses the path through which the medium 17 passes through the regenerator 20 and the inlet and outlet of the regenerator 20 without passing through the regenerator 20. Which of the second bypass paths 22b to be routed is controlled.

第２制御弁２３ｂが行う制御としては、図３の表の１行目に示すように、蓄熱器２０の蓄熱材温度が車室内設定温度より低くて、車室内の車室内温度も車室内設定温度より低い場合は、媒体１７が第２バイパス経路２２ｂを経由する制御を行う。 As the control performed by the second control valve 23b, as shown in the first row of the table of FIG. 3, the temperature of the heat storage material of the heat accumulator 20 is lower than the vehicle interior set temperature, and the vehicle interior temperature in the vehicle interior is also set in the vehicle interior. When the temperature is lower than the temperature, the medium 17 is controlled to pass through the second bypass path 22b.

また、第２制御弁２３ｂが行う制御としては、図３の表の２行目に示すように、蓄熱器２０の蓄熱材温度が車室内設定温度より低くて、車室内の車室内温度が車室内設定温度より高い場合は、媒体１７が蓄熱器２０を経由する制御を行う。媒体１７が蓄熱器２０を経由する場合、蓄熱器２０において、媒体１７と第２熱交換部２１ｂとの間で熱交換が行われ、蓄熱器２０に媒体１７の熱が蓄熱される。蓄熱による熱エネルギー回収分のイメージは、図４のグラフに示す斜線部に該当する。 Further, as the control performed by the second control valve 23b, as shown in the second row of the table of FIG. 3, the temperature of the heat storage material of the heat accumulator 20 is lower than the set temperature in the vehicle interior, and the vehicle interior temperature in the vehicle interior is When the temperature is higher than the indoor set temperature, the medium 17 performs control through the heat accumulator 20. When the medium 17 passes through the regenerator 20, heat exchange is performed between the medium 17 and the second heat exchange unit 21 b in the regenerator 20, and the heat of the medium 17 is stored in the regenerator 20. The image of the heat energy recovered by heat storage corresponds to the shaded area shown in the graph of FIG.

また、第２制御弁２３ｂが行う制御としては、図３の表の３行目に示すように、蓄熱器２０の蓄熱材温度が車室内設定温度より高くて、車室内の車室内温度が車室内設定温度より低い場合は、媒体１７が第２バイパス経路２２ｂを経由する制御を行う。 Further, as the control performed by the second control valve 23b, as shown in the third row of the table of FIG. 3, the temperature of the heat storage material of the heat accumulator 20 is higher than the set temperature in the vehicle interior, and the vehicle interior temperature in the vehicle interior is the vehicle temperature. When the temperature is lower than the indoor set temperature, the medium 17 is controlled to pass through the second bypass path 22b.

その後、更にウォーターポンプ１８で媒体１７が循環されることで、媒体１７は換気熱回収器６に戻る。 Thereafter, the medium 17 is further circulated by the water pump 18, so that the medium 17 returns to the ventilation heat recovery device 6.

第１の実施形態に係る換気熱回収システム１及びそれを用いた車両用空気調和装置２によれば、外気導入を行い車室内を暖房する場合、車室内の温度を一旦上げてしまえば、その車室内の空気の熱を捨てずに再利用するため、媒体１７を循環させて熱の移動を行う際に下がった温度の分のみ外気を暖めることを必要とする。これは、例えば、外気が−２０℃という低外気である場合、外気導入路５から導入される外気は、回収熱放熱器７での放熱により０℃付近まで暖めることが可能である。このため、外気が０℃と同等の消費電力しか必要とせず、エネルギーの無駄な消費を減らすことができる。 According to the ventilation heat recovery system 1 and the vehicle air conditioner 2 using the same according to the first embodiment, when the outside air is introduced and the vehicle interior is heated, once the temperature in the vehicle interior is raised, In order to reuse the air in the passenger compartment without throwing it away, it is necessary to heat the outside air only by the temperature that is lowered when the medium 17 is circulated and the heat is transferred. This is because, for example, when the outside air is a low outside air of −20 ° C., the outside air introduced from the outside air introduction path 5 can be warmed to near 0 ° C. by radiating heat from the recovered heat radiator 7. For this reason, only the power consumption equivalent to 0 degreeC outside air is required, and the useless consumption of energy can be reduced.

また、第１の実施形態に係る換気熱回収システム１及びそれを用いた車両用空気調和装置２によれば、換気熱回収システム１が車両用空気調和装置２から独立しているため、媒体１７は共有されておらず、既存の空気調和装置に換気熱回収システム１を後付けする際には、媒体１７の流れを制御するためのコントローラ、電磁弁等を必要とせず、且つ、温度制御のシステム全体に影響を及ぼすこともない。 Further, according to the ventilation heat recovery system 1 and the vehicle air conditioner 2 using the same according to the first embodiment, the ventilation heat recovery system 1 is independent of the vehicle air conditioner 2, and therefore the medium 17. Is not shared, and when retrofitting the ventilation heat recovery system 1 to an existing air conditioner, a controller for controlling the flow of the medium 17, a solenoid valve or the like is not required, and a temperature control system It does not affect the whole.

また、第１の実施形態に係る換気熱回収システム１及びそれを用いた車両用空気調和装置２によれば、回収運転を継続的に実施した後には媒体温度と室内温度との温度差は安定してくる。そのとき蓄熱器２０の第２熱交換部２１ｂへ媒体１７を流すことで蓄熱材に放熱することになり、媒体１７の温度が下がって室内温度との温度差が拡大するので、熱交換効率を向上しつつ蓄熱材に蓄熱することができる。 Moreover, according to the ventilation heat recovery system 1 and the vehicle air conditioner 2 using the same according to the first embodiment, the temperature difference between the medium temperature and the room temperature is stable after the recovery operation is continuously performed. Come on. At that time, the medium 17 is caused to flow to the second heat exchanging portion 21b of the heat accumulator 20 to dissipate heat to the heat storage material, and the temperature of the medium 17 decreases and the temperature difference from the room temperature increases, so the heat exchange efficiency is increased. Heat can be stored in the heat storage material while improving.

また、第１の実施形態に係る換気熱回収システム１及びそれを用いた車両用空気調和装置２によれば、蓄熱器２０の蓄熱材温度が高くて、車室内の車室内温度が低い場合は、蓄熱器２０において、媒体１７と蓄熱材との間で熱交換が行われ、蓄熱器２０の熱が媒体１７に放熱されることで、車室内への吸気温度を上昇させ、暖房の能力向上に寄与する。 Moreover, according to the ventilation heat recovery system 1 and the vehicle air conditioner 2 using the same according to the first embodiment, when the temperature of the heat storage material of the heat accumulator 20 is high and the temperature in the vehicle interior is low. In the heat accumulator 20, heat exchange is performed between the medium 17 and the heat accumulating material, and the heat of the heat accumulator 20 is radiated to the medium 17, thereby increasing the intake air temperature into the vehicle interior and improving the heating capacity. Contribute to.

また、第１の実施形態に係る換気熱回収システム１及びそれを用いた車両用空気調和装置２によれば、換気熱回収システムに大きな改造を加えることなく、蓄熱器２０を追加するシンプルな構造とすることで、コスト増加を抑えることができる。 Further, according to the ventilation heat recovery system 1 and the vehicle air conditioner 2 using the same according to the first embodiment, a simple structure in which the heat accumulator 20 is added without greatly modifying the ventilation heat recovery system. By doing so, an increase in cost can be suppressed.

（第２の実施の形態）
本発明の第２の実施の形態に係る換気熱回収システム１は、図５に示すように、第１の実施の形態に係る換気熱回収システム１と比して、熱移動手段８に媒体１７の媒体温度を検知する温度センサ４０を更に備える点が異なる。その他に関しては、実質的に同様であるので、重複する記載を省略する。 (Second Embodiment)
As shown in FIG. 5, the ventilation heat recovery system 1 according to the second embodiment of the present invention has a medium 17 in the heat transfer means 8 as compared with the ventilation heat recovery system 1 according to the first embodiment. The difference is that a temperature sensor 40 for detecting the medium temperature is further provided. Others are substantially the same, and thus redundant description is omitted.

温度センサ４０は、媒体１７の媒体温度を検知する水温センサ等である。温度センサ４０で検知される媒体温度は、車室内温度の代替手段として用いるために、車室内温度を反映する個所に配置されることが好ましい。温度センサ４０が配置される個所としては、例えば、図５に示すように、車室内温度を反映する換気熱回収器６と蓄熱器２０の間の第１経路１６ａが挙げられる。但し、温度センサ４０の個数は１つに限られず、複数であっても構わない。 The temperature sensor 40 is a water temperature sensor or the like that detects the medium temperature of the medium 17. In order to use the medium temperature detected by the temperature sensor 40 as an alternative to the vehicle interior temperature, the medium temperature is preferably arranged at a location that reflects the vehicle interior temperature. As a location where the temperature sensor 40 is disposed, for example, as shown in FIG. 5, a first path 16 a between the ventilation heat recovery device 6 and the heat accumulator 20 reflecting the temperature in the passenger compartment can be cited. However, the number of temperature sensors 40 is not limited to one and may be plural.

次に、第２の実施の形態に係る換気熱回収システム１及びそれを用いた車両用空気調和装置２により暖房を行う際の作用を説明する。 Next, the effect | action at the time of heating with the ventilation heat recovery system 1 which concerns on 2nd Embodiment, and the vehicle air conditioner 2 using the same is demonstrated.

第１制御弁２３ａが行う制御としては、図３の表の１行目に示すように、蓄熱器２０の蓄熱材温度が車室内設定温度より低くて、媒体１７の媒体温度も車室内設定温度より低い場合は、媒体１７が第１バイパス経路２２ａを経由する制御を行う。 As the control performed by the first control valve 23a, as shown in the first row of the table of FIG. If lower, the medium 17 performs control via the first bypass path 22a.

また、第１制御弁２３ａが行う制御としては、図３の表の２行目に示すように、蓄熱器２０の蓄熱材温度が車室内設定温度より低くて、媒体１７の媒体温度が車室内設定温度より高い場合は、媒体１７が第１バイパス経路２２ａを経由する制御を行う。 Further, as the control performed by the first control valve 23a, as shown in the second row of the table of FIG. 3, the heat storage material temperature of the heat accumulator 20 is lower than the vehicle interior set temperature, and the medium temperature of the medium 17 is the vehicle interior. When the temperature is higher than the set temperature, the medium 17 performs control through the first bypass path 22a.

また、第１制御弁２３ａが行う制御としては、図３の表の３行目に示すように、蓄熱器２０の蓄熱材温度が車室内設定温度より高くて、媒体１７の媒体温度が車室内設定温度より低い場合は、媒体１７が蓄熱器２０を経由する制御を行う。媒体１７が蓄熱器２０を経由する場合、蓄熱器２０において、媒体１７と第１熱交換部２１ａとの間で熱交換が行われ、蓄熱器２０の熱が媒体１７に放熱される。 Further, as the control performed by the first control valve 23a, as shown in the third row of the table of FIG. 3, the heat storage material temperature of the heat accumulator 20 is higher than the vehicle interior set temperature, and the medium temperature of the medium 17 is the vehicle interior. When the temperature is lower than the set temperature, the medium 17 performs control through the heat accumulator 20. When the medium 17 passes through the regenerator 20, heat exchange is performed between the medium 17 and the first heat exchange unit 21 a in the regenerator 20, and the heat of the regenerator 20 is radiated to the medium 17.

第２制御弁２３ｂが行う制御としては、図３の表の１行目に示すように、蓄熱器２０の蓄熱材温度が車室内設定温度より低くて、媒体１７の媒体温度も車室内設定温度より低い場合は、媒体１７が第２バイパス経路２２ｂを経由する制御を行う。 As the control performed by the second control valve 23b, as shown in the first row of the table of FIG. 3, the temperature of the heat storage material of the heat accumulator 20 is lower than the vehicle interior set temperature, and the medium temperature of the medium 17 is If lower, the medium 17 performs control via the second bypass path 22b.

また、第２制御弁２３ｂが行う制御としては、図３の表の３行目に示すように、蓄熱器２０の蓄熱材温度が車室内設定温度より高くて、車室内の車室内温度が車室内設定温度より低い場合は、媒体１７が第２バイパス経路２２ｂを経由する制御を行う。 As the control performed by the second control valve 23b, as shown in the third row of the table in FIG. 3, the temperature of the heat storage material of the heat accumulator 20 is higher than the set temperature in the vehicle interior, and the vehicle interior temperature in the vehicle interior is the vehicle temperature. When the temperature is lower than the indoor set temperature, the medium 17 is controlled to pass through the second bypass path 22b.

このように構成された第２の実施の形態に係る換気熱回収システム１及びそれを用いた車両用空気調和装置２でも、第１の実施の形態に係る換気熱回収システム１及びそれを用いた車両用空気調和装置２と同様の効果を得ることができる。 The ventilation heat recovery system 1 according to the second embodiment configured as described above and the vehicle air conditioner 2 using the same also use the ventilation heat recovery system 1 according to the first embodiment and the same. The same effect as the vehicle air conditioner 2 can be obtained.

（その他の実施の形態）
上記のように、本発明は実施の形態によって記載したが、この開示の一部をなす記述及び図面はこの発明を限定するものであると理解するべきではない。この開示から当業者には様々な代替実施の形態、実施例及び運用技術が明らかになるはずである。 (Other embodiments)
As described above, the present invention has been described according to the embodiment. However, it should not be understood that the description and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques should be apparent to those skilled in the art.

例えば、第１及び第２の実施の形態において、暖房する場合について記載したが、蓄熱器２０の代わりに蓄冷器とすれば冷房に用いることも可能である。 For example, in the first and second embodiments, the case of heating has been described, but if a regenerator is used instead of the regenerator 20, it can be used for cooling.

このように、本発明はここでは記載していない様々な実施の形態等を包含するということを理解すべきである。したがって、本発明はこの開示から妥当な特許請求の範囲の発明特定事項によってのみ限定されるものである。 Thus, it should be understood that the present invention includes various embodiments and the like not described herein. Therefore, the present invention is limited only by the invention specifying matters in the scope of claims reasonable from this disclosure.

１…換気熱回収システム
２…車両用空気調和装置
３…熱源
４…内気導出路
５…外気導入路
６…換気熱回収器
７…回収熱放熱器
８…熱移動手段
９…冷媒循環系
１０…コンデンサ
１１…リキッドタンク
１２…コンプレッサ
１３…エバポレータ
１４…膨張弁
１５…ヒーターコア
１６ａ…第１経路
１６ｂ…第２経路
１７…媒体
１８…ウォーターポンプ
１９…換気ファン
２０…蓄熱器
２１ａ…第１熱交換部
２１ｂ…第２熱交換部
２２ａ…第１バイパス経路
２２ｂ…第２バイパス経路
２３ａ…第１制御弁
２３ｂ…第２制御弁
４０…温度センサ
１００…車 DESCRIPTION OF SYMBOLS 1 ... Ventilation heat recovery system 2 ... Air conditioning apparatus for vehicles 3 ... Heat source 4 ... Inside air extraction path 5 ... Outside air introduction path 6 ... Ventilation heat recovery device 7 ... Recovery heat radiator 8 ... Heat transfer means 9 ... Refrigerant circulation system 10 ... Capacitor 11 ... Liquid tank 12 ... Compressor 13 ... Evaporator 14 ... Expansion valve 15 ... Heater core 16a ... First path 16b ... Second path 17 ... Medium 18 ... Water pump 19 ... Ventilation fan 20 ... Regenerator 21a ... First heat exchange Part 21b ... 2nd heat exchange part 22a ... 1st bypass path 22b ... 2nd bypass path 23a ... 1st control valve 23b ... 2nd control valve 40 ... Temperature sensor 100 ... Car

Claims

車室内外を連通し、前記車室内の空気を前記車室内から前記車室外へ導出する内気導出路と、
車室内外を連通し、外気を前記車室外から前記車室内へ導入する外気導入路と、
前記内気導出路に設けられ、前記内気導出路から導出される空気の熱を回収する換気熱回収器と、
前記外気導入路に設けられ、前記外気導入路から導入される空気に熱を放熱する回収熱放熱器と、
前記換気熱回収器と前記回収熱放熱器との間で熱を伝える熱移動手段と、
前記熱移動手段に設けられ、前記熱移動手段で伝えられる熱を蓄熱する蓄熱器
とを備え、車両用空気調和装置の冷媒循環系から独立していることを特徴とする換気熱回収システム。 An inside air outlet path that communicates with the outside of the passenger compartment, and leads the air in the passenger compartment to the outside of the passenger compartment from the passenger compartment,
An outside air introduction path for communicating outside and inside the vehicle interior and introducing outside air from outside the vehicle compartment to the vehicle interior;
A ventilation heat recovery unit that is provided in the inside air lead-out path and collects heat of the air led out from the inside air lead-out path;
A recovery heat radiator that is provided in the outside air introduction path and radiates heat to the air introduced from the outside air introduction path;
Heat transfer means for transferring heat between the ventilation heat recovery device and the recovered heat radiator;
A ventilation heat recovery system comprising: a heat accumulator that is provided in the heat transfer means and stores heat transferred by the heat transfer means, and is independent of a refrigerant circulation system of a vehicle air conditioner.

前記熱移動手段は、
前記換気熱回収器から前記回収熱放熱器へ向かって熱移動用の媒体が流れる経路であり、前記蓄熱器を経由する経路、及び前記蓄熱器の入口と出口を繋いで前記蓄熱器を経由せずにバイパスする第１バイパス経路を有する第１経路と、
前記回収熱放熱器から前記換気熱回収器へ向かって熱移動用の前記媒体が流れる経路であり、前記蓄熱器を経由する経路、及び前記蓄熱器の入口と出口を繋いで前記蓄熱器を経由せずにバイパスする第２バイパス経路を有する第２経路と、
前記第１経路に設けられ、前記第１バイパス経路を経由するか否かを制御する第１制御弁と、
前記第２経路に設けられ、前記第２バイパス経路を経由するか否かを制御する第２制御弁
とを備えることを特徴とする請求項１に記載の換気熱回収システム。 The heat transfer means is
It is a path through which the medium for heat transfer flows from the ventilation heat recovery unit to the recovery heat radiator, and connects the path through the heat storage unit and the inlet and outlet of the heat storage unit through the heat storage unit. A first path having a first bypass path to bypass without
It is a path through which the medium for heat transfer flows from the recovered heat radiator toward the ventilation heat recovery apparatus, and passes through the heat accumulator and connects the inlet and outlet of the heat accumulator through the heat accumulator. A second path having a second bypass path that bypasses without
A first control valve that is provided in the first path and that controls whether or not to pass through the first bypass path;
The ventilation heat recovery system according to claim 1, further comprising: a second control valve that is provided in the second path and controls whether or not the second path is routed.

前記蓄熱器は、前記第１経路及び前記第２経路のそれぞれに流れる前記媒体と熱交換することを特徴とする請求項２に記載の換気熱回収システム。 The ventilation heat recovery system according to claim 2, wherein the heat accumulator performs heat exchange with the medium flowing in each of the first path and the second path.

前記第１制御弁及び前記第２制御弁は、前記車室内の車室内温度と前記蓄熱器の蓄熱材温度に基づいて制御することを特徴とする請求項２に記載の換気熱回収システム。 The ventilation heat recovery system according to claim 2, wherein the first control valve and the second control valve are controlled based on a vehicle interior temperature in the vehicle interior and a heat storage material temperature of the heat accumulator.

前記第１制御弁及び前記第２制御弁は、前記媒体の媒体温度と前記蓄熱器の蓄熱材温度に基づいて制御することを特徴とする請求項２に記載の換気熱回収システム。 The ventilation heat recovery system according to claim 2, wherein the first control valve and the second control valve are controlled based on a medium temperature of the medium and a heat storage material temperature of the heat accumulator.

前記熱移動手段は、前記媒体の媒体温度を検知する温度センサを備えることを特徴とする請求項２〜５のいずれか１項に記載の換気熱回収システム。 The ventilation heat recovery system according to any one of claims 2 to 5, wherein the heat transfer means includes a temperature sensor that detects a medium temperature of the medium.

請求項１〜６のいずれか１項に記載の換気熱回収システムを有していることを特徴とする車両用空気調和装置。 It has the ventilation heat recovery system of any one of Claims 1-6, The air conditioning apparatus for vehicles characterized by the above-mentioned.