JP2007170792A - Air-conditioning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air-conditioning device used in a temperature zone of common air conditioning, carrying out a peak shift of an air conditioning thermal load by heat reserve, effectively using the remaining heat of a heat transfer medium after heat exchange in an air conditioner, operating a heat source in an almost rated state, contributing to the effective utilization of energy, and particularly, capable of enjoying advantages of a unit type. <P>SOLUTION: The air-conditioning device is provided with a heat exchanger adjusting a temperature and/or humidity of gas, a heat accumulator reserving heat of the heat transfer medium, and a blower capable of introducing gas with respect to the heat exchanger and the heat accumulator. A passage can be formed to introduce the heat transfer medium to the heat accumulator via the heat exchanger, a draft duct can be formed to introduce gas to the heat exchanger via the heat accumulator, and a latent heat reserve material is used as a heat reserve medium in the heat accumulator. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an air conditioner for performing air conditioning (hereinafter referred to as air conditioning) on various spaces such as a residential space of a building, and more particularly to an air conditioner that performs heat exchange using a heat accumulator.

  Conventionally, various air conditioners have been proposed in order to perform air conditioning on various spaces such as ordinary houses and offices. Among such air conditioners, a cascade heat exchange device that exchanges heat with various media such as hot water in a multistage manner is preferable in that the thermal energy of this media can be used effectively. For example, in Japanese Patent Application Laid-Open No. 2004-77031, a plurality of coolers having different operating temperatures such as low temperature, medium temperature, and high temperature are connected by a pipeline, and the same refrigerant is cooled sequentially in the order of low temperature, medium temperature, and high temperature. Equipment is disclosed (see Patent Document 1).

  Among various conventional air conditioners, heat storage air conditioners that use heat storage materials to store heat store heat generated by operating a heat source during times when electricity demand is low, and hours when electricity demand is high It is widely used to utilize energy cost merit based on a power charge system aimed at leveling power load. In addition, the heat storage air-conditioning system shifts the air-conditioning heat load to the peak, contributing to the reduction of the equipment capacity, and the operation for heat storage performed during the time when electricity demand is low leads to the rated operation of the heat source and heats up efficiently. Is preferable in terms of effective use of energy. For example, Japanese Patent Laid-Open No. 2000-130803 discloses an air conditioning facility in which a heat storage body is disposed in a ceiling space facing an air conditioning target room and air conditioning is performed using the heat storage body (see Patent Document 2). ).

  Further, among conventional air conditioners, there is a unit type air conditioner configured by housing various components necessary for air conditioning in a single casing. According to this unit type air conditioner, since the whole can be collected and transported and installed in one housing, the air conditioner can be easily attached. As such a unit type air conditioner, for example, a heat pump type air conditioner configured by providing a blower, an evaporator, a heat storage tank, and the like inside a casing is disclosed (see, for example, Patent Document 3). ). Or the air conditioner comprised by providing the sirocco fan and an internal heat exchanger in the inside of the air conditioner main body is disclosed (for example, refer patent document 4).

Japanese Patent Laid-Open No. 2004-77031 JP 2000-130803 A JP 2002-181349 A JP 2005-114274 A

  However, among such conventional air conditioners, as a cascade heat exchange device, there is a device that performs cold heat exchange in a stepwise manner as described in Patent Document 1, but different temperature zones such as refrigeration, refrigeration, and general air conditioning. It is used effectively under the condition of combining, and is limited to applications where at least one temperature zone different from general air conditioning exists. Here, “general air conditioning” refers to air conditioning performed mainly for people to spend in a space where people spend such as offices. In air conditioners that mainly target the temperature zone of general air conditioning, it is difficult to effectively use the remaining heat with the cooling coils in the subsequent stage even if the cooling coils are arranged in multiple stages. However, the remaining heat of the heat transfer medium was not used effectively and was directly returned to the heat source. Therefore, when the heat load is not large, the temperature difference between the return and return is not sufficient, and the heat source is operated in a state deviating from the rating, which is a major factor for reducing the energy use efficiency of the heat source. Therefore, the remaining heat of the heat transfer medium after the primary heat exchange with the air conditioner is effectively secondary used in the temperature zone of general air conditioning, and the temperature difference from the past is expanded and returned to the heat source at a predetermined return temperature. Therefore, there has been a demand for an air conditioner that is operated so that the heat source has high energy utilization efficiency in a state close to the rating.

  In addition, the conventional air conditioner switches the operation mode so as to store heat in the heat storage material exclusively during a time period different from the time period during which the target space is air-conditioned, mainly at night. In addition, there is an air conditioner that stores heat at the same time as the air conditioner is operated as described in the above-mentioned document 2. In such an apparatus, in order to store heat, the air conditioner is separated from the original air conditioner. You are driving to the belt. Specifically, in the above-mentioned document 2, by switching the outlet channel of the air conditioner, the air conditioner is operated exclusively for the purpose of storing heat to the heat storage material at night, and the target space is air-conditioned exclusively during the daytime. The air conditioner is operated for the purpose and heat storage is not performed. That is, the apparatus of Document 2 uses the air conditioner for the non-original time zone and purpose of “accumulating heat storage material”, and the air conditioner is used for the original time zone and “air-conditioning the target space”. At the same time that it is used for the purpose, it does not effectively utilize the residual heat of the heat transfer medium after heat exchange with the air conditioner. Therefore, also in the apparatus of literature 2, the heat transfer medium after heat exchange with the air conditioner was returned to the heat source as it was without effectively using the remaining heat.

  Further, the conventional unit type air conditioner has not solved the problems of the conventional cascade heat exchange device and air conditioner. For example, in the heat pump type air conditioner described in Patent Document 3, the heat storage tank stores hot water or ice as a heat storage material to exchange heat with the outside air, and the air described in Patent Document 4 above. In a conditioner, the heat storage material is housed in a suction duct and stores heat by exchanging heat with the air passing through the suction duct. Is not to be used effectively. Therefore, there has been a demand for an air conditioner that can solve the problems of these conventional cascade heat exchange devices and air conditioners and that can further enjoy the advantages of the unit type.

  The present invention has been made to solve the above-described problems of the prior art, and is used in the temperature zone of general air conditioning. The heat after peak-shifting the air-conditioning heat load due to heat storage and heat exchange with the air-conditioner is provided. It is intended to provide an air conditioner that can effectively use the residual heat of the carrier medium, operate the heat source in a state close to the rating, and contribute to the effective use of energy, and can particularly enjoy the advantages of the unit type. Objective.

  In order to solve the above-described problems and achieve the object, the present invention according to claim 1 includes a heat exchanger that adjusts the temperature and / or humidity of a gas, a heat accumulator that stores heat of a heat transfer medium, and An air conditioner comprising: a heat exchanger and a blower capable of introducing gas to the heat accumulator, wherein the flow path introduces the heat transfer medium to the heat accumulator via the heat exchanger It is possible to form an air passage that introduces the gas so as to reach the heat exchanger through the heat accumulator, and a heat storage medium in the heat accumulator is a latent heat storage material.

  According to a second aspect of the present invention, in the first aspect of the present invention, the heat exchanger, the heat accumulator, and the blower are accommodated in a hollow body, and the gas is contained in the hollow body. At least one intake port for taking in the inside from the outside of the hollow body, at least one exhaust port for discharging the gas from the inside to the outside of the hollow body, and the heat storage from the intake port A first air passage that reaches the exhaust port through the heat exchanger and the heat exchanger sequentially, and a second air passage that reaches the exhaust port via the heat exchanger without reaching the heat accumulator from the intake port, An air passage switching means for selectively switching the first air passage or the second air passage is provided.

  According to a third aspect of the present invention, in the present invention according to the first or second aspect, the heat exchanger, the heat accumulator, and the blower are accommodated in a hollow body, and the hollow body includes the The heat transfer medium that has finished heat exchange with the heat exchanger, the heat transfer medium that has finished heat exchange with the first flow path for introducing the heat transfer medium into the heat accumulator, and the heat storage medium. Provided with a second flow path for refluxing to a predetermined heat source without being introduced into the chamber, and a flow path switching means for selectively switching the first flow path or the second flow path. Features.

  According to a fourth aspect of the present invention, in the present invention according to any one of the first to third aspects, the hollow body is configured as a single case, and the heat exchanger is provided in the case. The heat accumulator and the blower are accommodated substantially integrally.

  According to a fifth aspect of the present invention, in the present invention according to any one of the first to third aspects, the hollow body includes a plurality of cases that can be divided. It is characterized by comprising connection means for connecting the bodies to each other.

  According to the air conditioner of the present invention according to claim 1, since the residual heat of the heat transfer medium after performing heat exchange in the air conditioner can be stored in the heat storage device, the air conditioning system mainly intended for the temperature zone of general air conditioning , The air-conditioning heat load is peak-shifted by heat storage, and the temperature of the heat transfer medium that returns to the heat source can be increased to operate the heat source in a state close to the rating. The COP (Coefficient of Performance) of the entire air-conditioning system Can be improved. In particular, since the heat storage medium in the heat storage device is a latent heat storage material, compared with the case where a sensible heat storage material is used, latent heat having a high specific heat can be stored to further improve the heat storage efficiency.

  According to the air conditioner of the present invention according to claim 2, since the first air passage and the second air passage can be switched, the air conditioner operation to perform the air blowing to the heat accumulator-the heat radiation mode operation, and the heat accumulator It is possible to switch between air conditioning operation and heat storage mode operation in which no air is blown, and it is possible to easily select an operation mode according to the air conditioning load or the like.

  According to the air conditioner of the present invention according to claim 3, since the first flow path and the second flow path can be switched, the air conditioning operation without introducing the heat transfer medium to the heat accumulator—the heat radiation mode operation. In addition, it is possible to switch between the air conditioning operation and the heat storage mode operation in which the heat transfer medium is introduced into the heat accumulator, and it is possible to easily select the operation mode according to the air conditioning load or the like.

  According to the air conditioner of the present invention according to claim 4, since each device necessary for heat storage air conditioning is comprehensively accommodated in one housing, these devices can be integrated into a single unit. Since the heat storage air-conditioning function completed by this one air-conditioning device can be obtained, the device configuration of the air-conditioning device is simplified. In addition, since the heat exchanger and the heat accumulator can be transported and installed as a unitized air conditioner, it is possible to easily attach the air conditioner.

  According to the air conditioner of the present invention according to claim 5, since a plurality of housings configured to be separable can be connected by the connecting means, the air conditioning machine room or the like in a state in which each housing is divided and miniaturized. Since the air conditioner can be constructed by connecting them to each other by connecting means, even if the air conditioner is a medium or large size, it can be easily carried in and installed.

  Hereinafter, embodiments of an air conditioner according to the present invention will be described in detail with reference to the accompanying drawings. First, [I] the basic concept common to each embodiment was explained, then [II] the specific contents of each embodiment were explained, and [III] finally, a modification to each embodiment was explained. To do. However, the present invention is not limited by these embodiments.

[I] Basic concept common to the embodiments First, the basic concept common to the embodiments will be described. FIG. 1 is a diagram for explaining this basic concept. The air-conditioning apparatus according to each embodiment is for performing air-conditioning on various spaces (hereinafter referred to as air-conditioning target spaces) to be air-conditioned such as ordinary houses and offices. Here, the air-conditioning target space includes a plurality of regions or an open or semi-open region without a clear partition in addition to a space partitioned as one region.

  This air conditioner can roughly introduce a heat exchanger that adjusts the temperature and / or humidity of the gas, a heat accumulator that stores the heat of the heat transfer medium, and a gas to the heat exchanger and the accumulator. And a blower. In addition, it is possible to form a flow path for introducing the heat transfer medium through the heat exchanger so as to reach the heat accumulator and an air passage for introducing the gas so as to reach the heat exchanger via the heat accumulator. .

  Here, the specific configuration of the heat exchanger is arbitrary, and may include an outside air heat exchanger for treating outside air in addition to a normal air treatment device. In addition, although the gas adjusted with a heat exchanger may contain other gas according to the environment of air-conditioning object space other than what is called air, it demonstrates as what adjusts air in the following description. In addition, the heat accumulator is configured to include a latent heat storage material, stores heat by exchanging heat with the heat transfer medium circulated in the flow path, and uses this heat to heat the gas. Exchange. In addition, the specific configuration of the heat source device is also arbitrary, and may include auxiliary equipment such as cooling as required in addition to the refrigerator. In addition, the specific configuration of the blower is arbitrary as long as gas can be introduced so as to reach the heat exchanger via the heat accumulator, and the gas is disposed on the upstream side of the air flow path from the heat accumulator, and the gas is stored in the heat accumulator and heat exchanger. Alternatively, the air may be blown toward the heat exchanger, or the air may be sucked from the heat accumulator to the heat exchanger by being disposed downstream of the heat exchanger. The flow path is configured as a main pipe that connects the heat exchanger and the heat source unit, and heat exchange is possible by circulating a heat transfer medium through the main pipe. The heat transfer medium may include water, a refrigerant, or a hydrate slurry. In the following description, it is assumed that water (cold water) is used.

  In such a configuration, one of the basic features common to the embodiments is that a regenerator is disposed on the return path of the cold water. That is, the water cooled by the heat source machine reaches the heat exchanger via the main pipe, performs the first (first stage) heat exchange, and returns to the heat source machine via the main pipe, but before returning to the heat source machine. Next, the second (next stage) heat exchange is performed with the heat storage material of the heat exchanger. Thus, by constructing a cascade heat exchange device that performs multistage heat exchange between the first stage and the next stage, the heat of cold water can be effectively utilized. In particular, in each embodiment, it is assumed that heat is stored in the heat storage material using water (cold water) of about 12 ° C. after exiting the heat exchanger, which has conventionally been wasted. It is possible to construct an apparatus that can effectively use heat of over ° C. Furthermore, according to such an apparatus, it is not necessary to drive the heat source device for heat storage, and the heat source device is driven only for air conditioning, and the excess heat energy can be stored and effectively used. it can. Furthermore, the temperature of the heat transfer medium that returns to the heat source unit can be raised to operate the heat source unit in a state close to the rating, and the COP of the entire air conditioning system can be improved. The basic concept and the basic apparatus for realizing the basic concept are as disclosed in the patent application (Japanese Patent Application No. 2005-228515) filed by the present applicant.

  One of the other basic features common to the embodiments is that a latent heat storage material is used as a heat storage medium in the heat storage device. This latent heat storage material is a heat storage material capable of storing latent heat having a specific heat higher than that of sensible heat. Thus, by making it possible to store latent heat having a high specific heat, further improvement in heat storage efficiency is achieved. .

  One of the other basic features common to the embodiments is that each device for performing heat storage air conditioning is housed in a hollow body. Here, the hollow body is for housing and interconnecting each device. When each device is housed in a single housing, the housing is applicable, and each device is divided into a plurality of housings. When these housings are connected to each other by connecting means, the housing and the connecting means are applicable. For example, when each device is comprehensively accommodated in a single housing to form one unit, the devices can be transported and installed together, and the handling becomes extremely easy. Alternatively, when each device is individually accommodated in a plurality of housings to form a plurality of units, the air conditioner can be connected to each other by individually loading each device even in a place where the carry-in route is narrow Therefore, the degree of freedom of installation of the air conditioner is greatly improved.

  One of the other basic features common to the embodiments is that the air passages for the heat exchanger and the heat storage material can be easily and reliably switched. That is, when the heat load is small, air conditioning is performed using air that has undergone heat exchange with only the heat exchanger, and when the heat load is large, air that has undergone primary heat exchange with the heat storage material is used. Further, the air passage is switched depending on the heat load or any other situation such as introducing into the heat exchanger and performing secondary heat exchange. Hereinafter, the specific content of each embodiment which implement | achieves such an air conditioner is demonstrated.

[II] Specific Contents of Each Embodiment Next, specific contents of each embodiment of the air conditioner according to the present invention will be described.

[Embodiment 1]
First, the first embodiment of the present invention will be described. In the first embodiment, the hollow body is configured as a single casing, and each device is accommodated in the single casing to form a unit as an air conditioner. Below, after demonstrating the structure of an air conditioner, the content of the air-conditioning process performed using this air conditioner is demonstrated.

(Configuration of air conditioner)
FIG. 2 is a diagram illustrating a configuration of the air conditioner according to the first embodiment. As shown in FIG. 2, the air conditioner 1 according to the first embodiment is arranged above the ceiling C (the back of the ceiling) that divides the upper part of the air-conditioning target space. The heat storage air conditioning unit 10 is connected.

  A heat source device (not shown) processes a heat load of a heat exchanger 11 (described later) in the heat storage air conditioning unit 10, and specifically cools water that is a heat transfer medium and sends it to the heat storage air conditioning unit 10. Although the specific configuration of the heat source machine is arbitrary, for example, the heat source machine includes a cooling coil and a water pump (not shown), and the cold water cooled by the cooling coil is pumped by the water pump.

  The heat source unit and the heat storage air conditioning unit 10 are connected via a main pipe 17. The main pipe 17 introduces the water cooled by the heat source machine into the heat exchanger 11 and returns the water heat-exchanged by the heat exchanger 11 to the heat source machine. Here, the main pipe 17 is connected to a lead-in pipe 18 for drawing cold water from the heat source machine into the heat exchanger 11. A three-way valve V1 is provided at a connection point between the main pipe 17 and the lead-in pipe 18, and by switching the three-way valve V1, the flow rate of the cold water supplied to the heat exchanger 11 can be adjusted. The amount of heat exchange between air and cold water in the heat exchanger 11 can be controlled. The main pipe 17 is connected to a lead-in pipe 19 for drawing cold water flowing through the main pipe 17 into the heat accumulator 12 described later. A three-way valve V2 is provided at a connection point between the main pipe 17 and the lead-in pipe 19, and cold water can be selectively introduced into the main pipe 17 or the lead-in pipe 19 by the three-way valve V2. The flow rate of the cold water drawn into the heat accumulator 12 can be adjusted, and the amount of heat stored in the heat accumulator 12 can be controlled. That is, the flow path that returns from the main pipe 17 to the main pipe 17 through the lead-in pipe 19 and reaches the heat source unit corresponds to the first flow path in the claims, and passes through the lead-in pipe 19 from the main pipe 17. The flow path leading to the heat source unit without corresponding corresponds to the second flow path in the claims. The three-way valve V2 corresponds to the flow path switching means in the claims.

  The heat storage air-conditioning unit 10 adjusts the temperature and / or humidity of the air and discharges it to the air-conditioning target space. The heat exchanger 11, the heat storage device 12, the blower 13, and the filter 14 are connected to one housing 15. It is configured to be housed inside (note that components that can be omitted in particular are indicated by dotted lines; the same applies hereinafter).

  Among these, the heat exchanger 11 adjusts the temperature and / or humidity of the gas, and is configured, for example, as a multi-tubular heat exchanger or a plate heat exchanger, and air is cooled by the cold heat of the cold water flowing inside the heat exchanger 11. Cool down. As a matter of course, a plurality of the same or similar heat exchangers 11 can be provided side by side, but here, for convenience of explanation, the explanation will be made assuming that there is one heat exchanger 11.

  Further, the heat accumulator 12 is a heat accumulating means for accumulating the cold heat of the cold water whose heat exchange has been completed in the heat exchanger 11 and cooling the air by the cold heat. Specifically, the heat accumulator 12 is configured by accommodating a heat storage material 12b inside a heat insulating casing 12a. The above-described lead-in pipe 19 is drawn into the heat storage material 12b, and at least a part of the lead-in pipe 19 is covered with the heat storage material 12b. Here, as the heat storage material 12b, a latent heat storage material (Phase Change Materials: PCM) that stores the latent heat of cold water is used, and it is possible to store latent heat having a high specific heat compared to the case of using a sensible heat storage material. Further improvement of heat storage efficiency is achieved. The heat storage material 12b preferably has a melting point that can be solidified by the cold water that leaves the heat exchanger 11 and reaches the heat storage material 12b. For example, the temperature of the cold water introduced into the heat storage material 12b is about 12 ° C. In this case, it is preferable to use the heat storage material 12b having a melting point of about 15 to 20 ° C.

  The blower 13 is a blowing unit that blows air so that air can be sequentially introduced into the heat exchanger 11 and the heat storage material 12 b and the heat exchanger 11. Specifically, the blower 13 includes a blower fan, and blows air inside the housing 15 by rotating the blower fan.

  The filter 14 is dust removing means for removing dust from the air flowing inside the heat storage air conditioning unit 10, and is configured as a panel filter in which, for example, chemical fibers formed of polyester or the like are superimposed in multiple layers.

  The housing | casing 15 is an accommodating means which accommodates these heat exchangers 11, the heat storage 12, the air blower 13, and the filter 14 substantially integrally, and respond | corresponds to the hollow body in a claim. The housing 15 is formed in a hollow, substantially rectangular parallelepiped shape, and has an internal space that can accommodate all of these devices. Although the specific structure and material of the housing 15 are arbitrary, it is preferable that the housing 15 is lightweight and excellent in heat insulating properties. For example, the housing 15 is configured as a heat insulating housing formed by covering an aluminum plate with polyurethane foam. Yes. A partition wall 15 a is provided between the heat exchanger 11 and the heat accumulator 12 inside the housing 15, and the internal space of the housing 15 accommodates the heat exchanger 11 with the partition wall 15 a as a boundary. The housing space SP1 is divided into a housing space SP2 that houses the heat accumulator 12.

  Here, the accommodation space SP2 is provided with an intake port 15b for taking air into the accommodation space SP2 from the outside of the casing 15, and the accommodation space SP1 receives air from the outside of the casing 15. An intake port 15c for taking in the accommodation space SP1 is provided. The partition 15a that partitions the accommodation space SP1 and the accommodation space SP2 is formed with a vent 15d that allows ventilation from the accommodation space SP2 to the accommodation space SP1. Further, a blower duct 16 is drawn out from the accommodation space SP2, and an exhaust port 16a for discharging air to the outside is communicated with the blower duct 16. The exhaust port 16a is disposed substantially flush with the ceiling surface C, and the air discharged from the exhaust port 16a is discharged from the ceiling surface C toward the air conditioning target space below it. In this specification, “exhaust” is synonymous with “supplying air” from the air conditioner 1 to the air-conditioning target space, and “exhaust port” means “air” of air to the air-conditioning target space. It is synonymous with “air outlet” (hereinafter the same).

  In such a configuration, inside the heat storage air conditioning unit 10, two air passages, a first air passage and a second air passage, are formed. The first air passage starts from the intake port 15b, passes through the space around the regenerator 12 in the storage space SP2, reaches the storage space SP1 through the vent 15d, and passes through the filter 14 in the storage space SP1. This is a ventilation path that passes through the space around the heat exchanger 11, passes through the exhaust duct 16, and reaches the exhaust port 16 a. The second air passage is an air passage that starts from the intake port 15c, passes through the filter 14 in the accommodation space SP1, passes through the space around the heat exchanger 11, passes through the exhaust duct 16, and reaches the exhaust port 16a. . Here, dampers D1 and D2 (corresponding to the air passage switching means in the claims) are respectively arranged in the intake port 15c and the vent port 15d. The air passage and the second air passage can be selectively switched with each other. In other words, by opening the damper D1 and closing the damper D2, it is possible to only blow air by the first air passage, and by closing the damper D1 and opening the damper D2, only air can be blown by the second air passage. Become.

(Operation mode of air conditioner)
Next, the operation mode by the air conditioner configured as described above will be described. Here, at least three modes of an air-conditioning stop-heat storage mode, an air-conditioning operation-heat radiation mode, and an air-conditioning operation-heat storage mode are assumed as operation modes. Can be switched.

  First, the air conditioning stop-heat storage mode will be described. FIG. 3 is a diagram illustrating an operation state of the heat storage air conditioning unit 10 in the air conditioning stop-heat storage mode. This air conditioning stop-heat storage mode is a mode in which only heat storage is performed on the heat storage material 12b of the heat accumulator 12 in a state in which air conditioning for the air conditioning target space is stopped, and is executed, for example, in a time zone with a small heat load such as nighttime. . Here, since the operation of the blower 13 is stopped and the air does not flow actively, the open / close states of the dampers D1 and D2 are irrelevant. For the same reason, the switching state of the three-way valve V1 is irrelevant. On the other hand, the three-way valve V <b> 2 is switched so that cold water is introduced from the main pipe 17 to the drawing pipe 19.

  In such a setting state, the cold water is cooled to about 7 ° C. by the heat source device and then introduced into the heat exchanger 11. Since the heat exchanger 11 has stopped operating, the heat exchanger In No. 11, heat exchange is not performed, and after the natural temperature rises to about 10 ° C., the main pipe 17 leads to the lead-in pipe 19 and is introduced into the heat storage material 12b of the heat accumulator 12. The cold water exchanges heat with the heat storage material 12b, thereby cooling and solidifying the heat storage material 12b, and the temperature rises to about 15 ° C. At this time, the cold water returns to the heat source machine via the main pipe 17. According to such an operation mode, heat from a heat source device driven in a time zone with a small heat load such as nighttime can be stored in the heat storage material 12b, and heat radiation at the time of a heat load peak in the air conditioning operation-heat radiation mode described later is possible. As described above, heat load distribution can be performed.

  Next, the air conditioning operation-heat radiation mode will be described. FIG. 4 is a diagram illustrating an operation state of the heat storage air conditioning unit 10 in the air conditioning operation / heat radiation mode. This air-conditioning operation-heat radiation mode is a mode in which heat is radiated from the heat storage material 12b at the same time as air conditioning is performed on the air-conditioning target space, and is executed, for example, during a daytime heat load peak. Here, the first air passage is selected by opening the damper D1 and closing the damper D2. Further, the three-way valve V1 is switched so that the cold water reaches the drawing pipe 18 from the main pipe 17, and the three-way valve V2 is switched so as to return directly to the heat source machine without reaching the drawing pipe 19 from the main pipe 17.

  In such a setting state, the chilled water is cooled to about 7 ° C. by the heat source device and then introduced into the heat exchanger 11, and exchanges heat with the air flowing around the heat exchange coil of the heat exchanger 11. The air is cooled and the temperature rises to about 15 ° C. This cold water returns directly to the heat source machine via the main pipe 17 without reaching the drawing pipe 19 and is cooled again to about 7 ° C. On the other hand, the air of about 28 ° C. taken in from the intake port 15 b is cooled to about 24 ° C. by performing heat exchange with the heat storage material 12 b of the heat storage unit 12, and then is exchanged with the heat exchanger 11. It is cooled to about 16 ° C. and discharged from the exhaust port 16a to the air conditioning target space. According to such an operation mode, the heat of the heat exchanger 11 that can perform primary cooling by radiating the cold stored in a time zone with a small heat load such as nighttime to dissipate the air at the peak of the heat load and perform secondary cooling. The load can be reduced.

  Next, the air conditioning operation-heat storage mode will be described. FIG. 5 is a diagram illustrating an operation state of the heat storage air conditioning unit 10 in the air conditioning operation-heat storage mode. This air conditioning operation-heat storage mode is a mode in which air conditioning is performed on the air-conditioning target space and at the same time heat storage is performed on the heat storage material 12b. For example, it is executed in a time zone between a time zone with a small heat load and a time zone with a large heat load. The Here, the second air passage is selected by closing the damper D1 and opening the damper D2. In addition, the three-way valve V1 is switched so that cold water reaches the drawing pipe 18 from the main pipe 17, and the three-way valve V2 is switched so that the cold water is introduced from the main pipe 17 through the drawing pipe 19 into the heat storage material 12b. .

  In such a setting state, the chilled water is cooled to about 7 ° C. by the heat source machine and then introduced into the heat exchanger 11, and the first stage of the cold water with the air flowing around the heat exchange coil of the heat exchanger 11. Heat exchange is performed, air is cooled, and the temperature rises to about 12 ° C. This cold water reaches the lead-in pipe 19 from the main pipe 17, is introduced into the heat storage material 12b of the heat storage material 12b, and cools and solidifies the heat storage material 12b by exchanging heat with the heat storage material 12b. Let The water whose temperature has increased to about 15 ° C. by this heat exchange returns to the heat source machine through the main pipe 17. On the other hand, the air of about 28 ° C. taken in from the intake port 15c is directly introduced into the heat exchanger 11 without reaching the heat storage material 12b, and is cooled to about 16 ° C. by the heat exchanger 11, and the exhaust port 16a is discharged into the air-conditioning target space. According to such an operation mode, the remaining heat of the chilled water after performing the first stage heat exchange in the heat exchanger 11 can be stored in the next stage, and this heat is used for cooling the chilled water in the next air conditioning operation-radiating mode. Therefore, a multistage cascade heat dissipation device can be constructed to improve the thermal efficiency of the entire air conditioner.

(Effect of Embodiment 1)
Thus, according to this Embodiment 1, since the remaining heat of the cold water after heat-exchange with the heat exchanger 11 can be stored in the heat storage 12, in the air conditioner which mainly makes the temperature range of general air conditioning. The peak air-conditioning heat load can be shifted by heat storage, and the temperature of the chilled water returning to the heat source unit can be raised to operate the heat source close to its rating, improving the COP (Coefficient of Performance) of the entire air-conditioning system. Can be made. In particular, since the latent heat storage material is used as the heat storage medium of the heat storage device 12, it is possible to store latent heat having a high specific heat as compared with the case where a sensible heat storage material is used, and the heat storage efficiency can be further improved.

  Moreover, in Embodiment 1, since all of the heat exchanger 11, the heat accumulator 12, the air blower 13, and the filter 14 are comprehensively accommodated in the inside of one housing | casing 15, each of these apparatuses are accommodated. A single unit can be integrated into a unit, and a complete heat storage air-conditioning function can be obtained by the single air-conditioning device 1, so that the device configuration of the air-conditioning device 1 is simplified. In addition, since the heat exchanger 11 and the heat accumulator 12 can be transported and installed as a unitized air conditioner 1, the air conditioner 1 can be easily attached. Moreover, since the heat accumulator 12 is individually accommodated in the accommodation space SP2, the heat storage efficiency can be easily improved, such as covering the inner wall of the accommodation space SP2 with a heat insulating material.

[Embodiment 2]
Next, a second embodiment of the present invention will be described. The second embodiment is a form having an air passage different from the first embodiment. Unless otherwise specified, the configuration and processing are the same as those in the first embodiment, and the components substantially the same as those in the first embodiment are denoted by the same reference numerals as those used in the first embodiment, if necessary. The description is omitted.

(Configuration of air conditioner)
FIG. 6 is a diagram showing a configuration of the air conditioner according to the second embodiment. As shown in FIG. 6, the air conditioner 2 according to Embodiment 2 is generally configured by connecting a heat storage air conditioning unit 20 to a heat source unit (not shown). The heat storage air-conditioning unit 20 is configured by housing the heat exchanger 11, the heat storage 12, and the blower 13 inside one housing 21, and providing a filter 14 outside the housing 21. Yes.

  The housing | casing 21 is an accommodating means which accommodates these heat exchangers 11, the heat storage 12, and the air blower 13 substantially integrally, and respond | corresponds to the hollow body in a claim. The housing 21 is provided with only one intake port 21a, and intake air is consolidated. And since the filter 14 is arrange | positioned outside this inlet port 21a, only the air which passed this filter 14 is taken in into the housing | casing 21 from the inlet port 21a. However, the filter 14 is not necessarily arranged outside the housing 21, and the same effect can be obtained even if the filter 14 is provided at a position corresponding to the air inlet 21 a inside the housing 21. A partition wall 21b is provided between the heat accumulator 12 and the housing 21 inside the housing 21, and an accommodation space SP2 that accommodates the heat accumulator 12 is separated from the introduction path SP2a with the partition wall 21b as a boundary. It is partitioned into a detour SP2b. The introduction path SP2a is a blower path that introduces air taken in from the intake port 21a to the regenerator 12, and the detour SP2b is a blower that bypasses air taken in from the intake port 21a to the regenerator 12. Road.

  In such a configuration, two air passages, a first air passage and a second air passage, are formed inside the heat storage air conditioning unit 20. The first air passage passes through the intake port 21a through the filter 14, passes through the space around the heat accumulator 12 through the introduction passage SP2a, and further passes through the space around the heat exchanger 11 to form the exhaust duct 16 It is a ventilation path which leads to the exhaust port 16a via. The second air passage passes through the air inlet 21a through the filter 14, passes through the bypass SP2b, further passes through the space around the heat exchanger 11, and reaches the air outlet 16a through the exhaust duct 16. It is a route. Here, a damper D3 (corresponding to the air passage switching means in the claims) is arranged between the air inlet 21a and the partition wall 21b, and the first air passage and the first air passage are opened and closed by opening and closing the damper D3. The two air passages can be selectively switched with each other. That is, by driving the damper D3 toward the imaginary line in the figure, it is possible to only blow air by the first air passage, and by driving the damper D3 toward the solid line in the figure, only air blow by the second air passage. Is possible.

(Operation mode of the air conditioner 2)
In the air conditioner 2 configured as described above, the damper D3 and the three-way valves V1 and V2 are switched during the air conditioning stop-heat storage mode, similarly to the air conditioning stop-heat storage mode according to the first embodiment. And the cold water cooled with the heat source machine is introduce | transduced into the thermal storage 12 through the heat exchanger 11, heat-exchanges with the thermal storage material 12b, the said thermal storage material 12b is solidified, and the heat source machine is passed through the main piping 17. Return to.

  In the air conditioning operation / heat radiation mode, the first air passage is selected by driving the damper D3 toward the imaginary line in the drawing. Further, the three-way valve V1 is switched so that the cold water reaches the drawing pipe 18 from the main pipe 17, and the three-way valve V2 is switched so as to return directly to the heat source machine without reaching the drawing pipe 19 from the main pipe 17. And the cold water cooled with the heat source machine is introduce | transduced into the heat exchanger 11, cools air, and returns directly to a heat source machine. On the other hand, the air taken in from the intake port 21a is cooled by exchanging heat with the heat accumulator 12, and then further cooled with the heat exchanger 11, and is transferred from the exhaust port 16a to the air conditioning target space. Released.

  In the air conditioning operation-heat storage mode, the second air passage is selected by driving the damper D3 in the direction of the solid line in the figure. In addition, the three-way valve V1 is switched so that cold water reaches the drawing pipe 18 from the main pipe 17, and the three-way valve V2 is switched so that the cold water is introduced from the main pipe 17 through the drawing pipe 19 into the heat storage material 12b. . And the cold water cooled with the heat source machine is introduce | transduced into the heat exchanger 11, air is cooled, heat exchange with the heat storage material 12b is performed, the said heat storage material 12b is solidified, and the heat source machine is passed through the main piping 17. Return to. On the other hand, the air taken in from the intake port 21a is introduced into the heat exchanger 11 without reaching the heat storage material 12b, cooled by the heat exchanger 11, and discharged from the exhaust port 16a to the air-conditioning target space.

(Effect of Embodiment 2)
As described above, according to the second embodiment, in addition to the effects substantially the same as those in the first embodiment, only the air that has passed through the filter 14 can be taken into the heat storage air conditioning unit 20, and dust can be easily and reliably removed. it can. Moreover, two air paths can be switched by one damper D3, and the air path can be switched with a simpler configuration.

[Embodiment 3]
Next, a third embodiment of the present invention will be described. The third embodiment is intended for a medium-sized air conditioner that is larger than the first and second embodiments, and is configured such that the air conditioner can be divided using a plurality of housings. Further, in the third embodiment, each casing is of a vertical type. Unless otherwise specified, the configuration and processing are the same as those in the first embodiment, and the components substantially the same as those in the first embodiment are denoted by the same reference numerals as those used in the first embodiment, if necessary. The description is omitted.

(Configuration of air conditioner)
FIG. 7 is a diagram illustrating a configuration of the air conditioner according to Embodiment 3. In FIG. As shown in FIG. 7, the air conditioner 3 according to the third embodiment is arranged in an air conditioning machine room or the like adjacent to the air-conditioning target space. The air conditioning unit 30 and the heat storage air conditioning unit 31 are connected to each other.

  The general air conditioning unit 30 is a vertically installed air conditioner, and is configured by housing the heat exchanger 11, the blower 13, the filter 14, and the humidifier 32 inside the housing 33. The humidifier 32 performs humidification to the air by a known humidification method using water supplied via the water supply pipe 32a and the two-way valve V3. For example, a vaporization humidifier, a steam humidifier, Alternatively, it is configured as a water spray type humidifier. Moreover, the housing | casing 33 is formed in the vertically long substantially rectangular shape, and is being fixed to the floor G of an air-conditioning machine room by fixing tools, such as an anchor which is not shown in figure, or not shown. The casing 33 is provided with one vent 33a and one exhaust 33b, and the air taken in from the vent 33a is temperature-controlled by the heat exchanger 11 and further humidified by the humidifier 32. After that, it leaves this exhaust port 33b and is discharged directly or indirectly into a predetermined air-conditioning target space through an air conditioning duct (not shown).

  The heat storage air conditioning unit 31 is detachably connected to the general air conditioning unit 30, and is configured by housing the heat storage 12 and the filter 14 inside the housing 34. The casing 34 is formed in a vertically long and substantially rectangular shape, and is fixed to the floor G of the air conditioning machine room by a fixture such as a self-supporting or anchor. In particular, the housing 34 is configured with substantially the same dimensions as the housing 33 of the general air conditioning unit 30, and the manufacturing process and installation work of the general air conditioning unit 30 and the heat storage air conditioning unit 31 are made common. . The casing 34 is provided with one intake port 34a, and intake air is consolidated. Since the filter 14 is disposed at a position corresponding to the air inlet 34 a inside the housing 34, the air taken in from the air inlet 34 a always passes through the filter 14 and is taken into the housing 34. . However, the filter 14 may be disposed outside the intake port 34a. The casing 34 is provided with one vent 34b, and the casing 33 of the general air conditioning unit 30 can be ventilated through the vent 34b. Details of this connection structure will be described later. A partition wall 34c is provided between the heat accumulator 12 and the housing 34 inside the housing 34, and the housing space SP2 for housing the heat accumulator 12 is bypassed from the introduction path SP2a with the partition wall 34c as a boundary. It is partitioned into a road SP2b.

  In such a configuration, two air passages, a first air passage and a second air passage, are formed inside the general air conditioning unit 30 and the heat storage air conditioning unit 31. The first air passage passes through the intake port 34a and the filter 14, passes through the surrounding space of the regenerator 12 on the heat accumulator side (right side of the partition wall 34c in FIG. 7) from the partition wall 34c, and further includes a vent hole 34b, 33 is a ventilation path that passes through 33a and the filter 14, passes through the space around the heat exchanger 11, and reaches the exhaust port 33b. The second air passage passes through the intake port 34a and the filter 14, passes through the outside of the partition wall 34c (the left side of the partition wall 34c in FIG. 7), and further passes through the ventilation ports 34b and 33a and the filter 14 to exchange heat. This is a ventilation path that passes through the space around the vessel 11 and reaches the exhaust port 33b. Here, a damper D4 (corresponding to the air passage switching means in the claims) is disposed between the filter 14 and the partition wall 34c, and the first air passage and the second air passage are opened and closed by opening and closing the damper D4. The air passages can be selectively switched with each other. That is, by driving the damper D4 toward the imaginary line in the figure, it is possible to only blow air by the first air passage, and by driving the damper D4 toward the solid line in the figure, only air blow by the second air passage. Is possible.

(Configuration of air conditioner-details of connection structure)
Next, the details of the connection structure between the general air conditioning unit 30 and the heat storage air conditioning unit 31 will be described. As shown in FIG. 7, the main pipe 17 is pulled in from the heat source unit to the general air conditioning unit 30, connected to the general air conditioning unit 30 and the heat storage air conditioning unit 31, and pulled from the heat storage air conditioning unit 31 to the heat source unit. At each position, they are connected to each other via a connecting portion 17a (corresponding to the connecting means in the claims). An enlarged view of the connecting portion 17a is shown in FIG. As shown in the figure, flanges 17b and 17c are provided at positions and shapes substantially corresponding to each other at the end of the main pipe 17, and these flanges 17b and 17c are butted against each other and fixed with bolts. The main pipes 17 are connected to each other in a watertight manner. Similarly, a flange structure can be adopted for mutual connection between the vent 33 a of the casing 33 and the vent 34 b of the casing 34. That is, by providing flanges on the outer periphery of the vent 33a of the casing 33 and the outer periphery of the vent 34b of the casing 34 at positions and shapes substantially corresponding to each other, these flanges are butted against each other and bolted. The vent 33a of the housing 33 and the vent 34b of the housing 34 can be connected to each other in an airtight manner. As described above, the air flow path and the water supply path are connected by the flange structure, so that the general air conditioning unit 30 and the heat storage air conditioning unit 31 are carried into the air conditioning machine room in a state of being divided into smaller sizes, and after carrying in, these The general air conditioning unit 30 and the heat storage air conditioning unit 31 can be easily connected to each other, so that the air conditioner 3 can be carried in and installed more easily. That is, in the third embodiment, the housing 33 and the housing 34 constitute a hollow body in the scope of claims.

  However, as a connection structure between the general air conditioning unit 30 and the heat storage air conditioning unit 31, a structure other than the flange structure can be adopted. FIG. 9 shows an enlarged view of another connection structure. As shown in the figure, flanges 17b and 17c are provided at the ends of the main pipe 17 in shapes substantially corresponding to each other. Here, the flexible joint 35 is arrange | positioned between these flanges 17b and 17c. The flexible joint 35 is configured by providing flanges 35b and 35c at both ends of a bellows (bellows) 35a. The bellows 35a is a flexible expansion / contraction body. For example, a molded bellows or a flexible tube or a thin metal plate having a disk shape formed by press forming a metal cylinder to provide unevenness is welded. It is configured as a welded bellows configured by connecting. The flanges 35b and 35c have a shape substantially corresponding to the flanges 17b and 17c, and the flange 35b and the flange 17b, and the flange 35c and the flange 17c are fixed to each other by screws. Although not shown, a connection structure using the flexible joint 35 can also be applied to the mutual connection between the vent 33 a of the casing 33 and the vent 34 b of the casing 34. By connecting the general air conditioning unit 30 and the heat storage air conditioning unit 31 via the flexible joint 35 in this way, the mutual distance and relative position between the general air conditioning unit 30 and the heat storage air conditioning unit 31 are the conditions of the installation position. Even in the case of changing according to the above, since the change is absorbed by the deformation of the bellows 35a of the flexible joint 35, the degree of freedom of these connection positions is improved, and the general air conditioning unit 30 and the heat storage air conditioning unit 31 Can be connected more easily and reliably.

(Operation mode of the air conditioner 3)
In the air conditioner 3 of FIG. 7 configured as described above, in the air conditioning stop-heat storage mode, the three-way valve V1 is switched so that the cold water is not drawn into the heat exchanger 11, and the cold water is drawn into the heat accumulator 12. Thus, the three-way valve V2 is switched. Moreover, since the ventilation by the air blower 13 is not performed, the open / close state of the damper D4 is irrelevant. And the cold water cooled with the heat source machine is introduce | transduced into the thermal storage 12 without passing through the heat exchanger 11, performs heat exchange with the thermal storage material 12b, solidifies the said thermal storage material 12b, and returns to a heat source machine.

  In the air-conditioning operation / heat radiation mode, the three-way valve V1 is switched so that cold water is drawn into the heat exchanger 11, and the three-way valve V2 is switched so that cold water is not drawn into the heat accumulator 12. Further, the first air passage is selected by driving the damper D4 toward the imaginary line. And the cold water cooled with the heat source machine is introduce | transduced into the heat exchanger 11, cools air, and returns directly to a heat source machine, without passing through the heat storage device 12. FIG. On the other hand, the air taken in from the air inlet 34 a is cooled by exchanging heat with the heat accumulator 12, then reaches the housing 33 through the air vent 33 b from the air vent 34 b, and is further increased by the heat exchanger 11. It is cooled and discharged from the exhaust port 33b to the air conditioning target space.

  In the air conditioning operation-heat storage mode, the three-way valve V1 is switched so that cold water is drawn into the heat exchanger 11, and the three-way valve V2 is switched so that cold water is drawn into the heat storage 12. Further, the second air passage is selected by driving the damper D4 toward the solid line in the drawing. And the cold water cooled with the heat source machine is introduce | transduced into the heat exchanger 11, air is cooled, heat exchange with the heat storage material 12b is performed, the heat storage material 12b is solidified, and it returns to a heat source machine. On the other hand, the air taken in from the intake port 34a does not reach the heat storage material 12b, reaches the casing 33 through the vent port 34b through the vent port 33a, is cooled by the heat exchanger 11, and is air-conditioned from the exhaust port 33b. To be released.

(Effect of Embodiment 3)
As described above, according to the third embodiment, in addition to the effects substantially the same as those of the first embodiment, the air conditioner 3 is distributed and arranged in a plurality of parts as separate units. The unit 31 can be carried into an air conditioning machine room or the like in a state of being divided into small parts and connected to each other, so that the air conditioner 3 can be constructed. Can be easily performed. In addition, such a multiple division structure may be applied to a small air conditioner as in the first and second embodiments. In this case, the small air conditioner can be easily carried in and installed in a smaller space. . In particular, since only the components for heat storage air conditioning including the heat accumulator 12 are individually housed in the housing 34 and unitized as the heat storage air conditioning unit 31, the general air conditioning unit 30 is already installed and functions alone. Even in such a case, simply by newly connecting the heat storage air conditioning unit 31 to the general air conditioning unit 30, it is possible to easily configure the air conditioning device 3 that performs cascade heat exchange, storing excess energy in the general air conditioning unit 30, By making this available when the air conditioning load is large, the air conditioning load of the general air conditioning unit 30 can be peak cut. Moreover, since the mutual connection structure of the general air conditioning unit 30 and the heat storage air conditioning unit 31 can be connected by a flange structure or a flexible joint structure, the general air conditioning unit 30 and the heat storage air conditioning unit 31 can be more easily and reliably connected. The air conditioner 3 can be introduced more easily.

[Embodiment 4]
Next, a fourth embodiment of the present invention will be described. The fourth embodiment is intended for a larger air conditioner that is larger than that of the third embodiment, and is configured such that the air conditioner can be divided by using more housings. Further, in the fourth embodiment, each casing is a horizontal type. Unless otherwise specified, the configuration and processing are the same as those in the third embodiment, and the same reference numerals as those used in the third embodiment are attached to the configurations that are substantially the same as those in the third embodiment, as necessary. The description is omitted.

(Configuration of air conditioner)
FIG. 10 is a diagram showing a configuration of an air conditioner according to Embodiment 4. In FIG. As shown in the figure, the air conditioner 4 according to the fourth embodiment is arranged in an air conditioning machine room or the like adjacent to the air-conditioning target space. The general air conditioning unit 42, the heat storage air conditioning unit 43, and the switching unit 44 are connected.

  The blower unit 41 is configured by housing the blower 13 in a housing 45. The blower 13 is generally configured in the same manner as in the first to third embodiments, but more specifically, by rotating the fan 13c via the fan belt 13b rotated by the motor 13a, Blow. The casing 45 is installed on the floor G of the air conditioning machine room or the like via the vibration isolator 13d, and the vibration generated by the rotation of the motor 13a and the fan 13c is absorbed by the vibration isolator 13d. The casing 45 is formed with a vent 45a and an exhaust 45b.

  The general air conditioning unit 42 is a known horizontal type air conditioner, and is configured by housing the heat exchanger 11, the filter 14, and the humidifier 32 inside the housing 46. The casing 46 is formed at substantially the same height as the casing 45 of the blower unit 41. By matching the shapes in this way, the manufacturing process and installation work of the blower unit 41 and the general air conditioning unit 42 are performed. (This is the same for the heat storage air conditioning unit 43 and the switching unit 44). The casing 46 is formed with vent holes 46a and 46b.

  The heat storage air-conditioning unit 43 is detachably connected to the general air-conditioning unit 42, and is configured by placing a second heat storage air-conditioning unit 43B on top of the first heat storage air-conditioning unit 43A. The first heat storage air-conditioning unit 43 </ b> A is configured by housing the heat storage 12 and the filter 14 in the housing 47. The second heat storage air conditioning unit 43 </ b> B is configured by housing the filter 14 in the housing 48. The case side surfaces that separate the case 47 and the case 48 function as partition walls that divide the heat accumulator accommodation space into the introduction path SP2a and the detour path SP2b. Thus, by comprising heat storage air-conditioning unit 43 so that division | segmentation is possible, heat storage air-conditioning unit 43 can be easily carried in and attached also to an air-conditioning machine room with a comparatively narrow carrying-in path | route. Further, it becomes easier to take a heat insulating structure for the heat accumulator 12. The casing 47 is formed with vent holes 47a and 47b, and the casing 48 is formed with vent holes 48a and 48b.

  The switching unit 44 is detachably connected to the heat storage air conditioning unit 43, and is configured by accommodating a damper D <b> 5 (corresponding to the air passage switching means in the claims) inside the housing 49. The housing 49 is formed with an air inlet 49a and two air vents 49b and 49c. Here, the damper D5 selectively switches between the first air passage and the second air passage. Among these, the first air passage is from the air inlet 49a to the air vent 49b, from the air vent 47a to the air vent 47b through the filter 14 and the peripheral section of the heat accumulator 12, and from the air vent 46a to the filter 14 and the heat. This is a ventilation path that reaches the vent 46b through the space around the exchanger 11 and the humidifier 32, and further from the vent 45a to the exhaust 45b. Further, the second air passage is from the air inlet 49a to the air vent 49c, from the air vent 48a to the air vent 48b through the filter 14, and thereafter the air outlet 45b through the same route as the first air passage. It is the ventilation path which leads to. Then, the first air passage is selected by switching the damper D5 toward the illustrated imaginary line, and the second air passage is selected by switching the damper toward the illustrated solid line. In addition, as a mutual connection structure of these ventilation unit 41, the general air conditioning unit 42, the thermal storage air conditioning unit 43, and the switching unit 44, the structure similar to the connection structure of the units of Embodiment 3 is applicable. That is, in the fourth embodiment, the casings 45 to 49 constitute the hollow body in the claims.

(Operation mode of the air conditioner 4)
In the air conditioner 4 configured as described above, the three-way valve V1 is switched so that the cold water is not drawn into the heat exchanger 11 and the cold water is drawn into the heat accumulator 12 in the air conditioning stop-heat storage mode. Valve V2 is switched. Moreover, since the ventilation by the air blower 13 is not performed, the open / close state of the damper D5 is irrelevant. And the cold water cooled with the heat source machine is introduce | transduced into the thermal storage 12 without passing through the heat exchanger 11, performs heat exchange with the thermal storage material 12b, solidifies the said thermal storage material 12b, and returns to a heat source machine.

  In the air-conditioning operation / heat radiation mode, the three-way valve V1 is switched so that cold water is drawn into the heat exchanger 11, and the three-way valve V2 is switched so that cold water is not drawn into the heat accumulator 12. Further, the first air passage is selected by driving the damper D5 toward the imaginary line in the drawing. And the cold water cooled with the heat source machine is introduce | transduced into the heat exchanger 11, cools air, and returns directly to a heat source machine, without passing through the heat storage device 12. FIG. On the other hand, the air taken in from the intake port 49a passes through the switching unit 44, is cooled by exchanging heat with the heat storage unit 12 of the first heat storage air conditioning unit 43A, and then cooled by the heat of the general air conditioning unit 42. It is further cooled by the exchanger 11 and humidified by the humidifier 32, passes through the blower unit 41, and is discharged from the exhaust port 45b to the air-conditioning target space.

  In the air conditioning operation-heat storage mode, the three-way valve V1 is switched so that cold water is drawn into the heat exchanger 11, and the three-way valve V2 is switched so that cold water is drawn into the heat storage 12. Further, the second air passage is selected by driving the damper D5 toward the solid line in the drawing. And the cold water cooled with the heat source machine is introduce | transduced into the heat exchanger 11, air is cooled, heat exchange with the heat storage material 12b is performed, the heat storage material 12b is solidified, and it returns to a heat source machine. On the other hand, the air taken in from the intake port 49a passes through the switching unit 44, and further passes through the second heat storage air conditioning unit 43B, and then is cooled by the heat exchanger 11 of the general air conditioning unit 42 and also into the humidifier 32. The air is humidified, passes through the blower unit 41, and is discharged from the exhaust port 45b to the air-conditioning target space.

(Effect of Embodiment 4)
As described above, according to the fourth embodiment, in addition to substantially the same effects as those of the third embodiment, the air conditioner 4 is distributed and arranged in a larger number of parts as separate units. Since the air conditioning unit 42, the heat storage air conditioning unit 43, and the switching unit 44 are separated from each other and carried into the air conditioning machine room and are connected to each other, the air conditioning device 4 can be constructed. Even if it is large, it can be carried in and installed easily. Moreover, such a multiple division structure may be applied to the small air conditioners 1 and 2 as in the first and second embodiments and the medium air conditioner 3 as in the third embodiment. These small and medium-sized air conditioners 1 to 3 can be easily carried in and installed in a smaller space. Further, since only the regenerator 12 which is a component for heat storage air conditioning is housed in the casing 47 and unitized as the first heat storage air conditioning unit 43A, the general air conditioning unit 42 and the air blowing unit 41 are already installed and function. Even in such a case, the air conditioner 4 that performs cascade heat exchange can be easily configured only by newly connecting the heat storage air conditioning unit 43A to the general air conditioning unit 42. In addition, since the switching unit 44 has an individual configuration and the first heat storage air conditioning unit 43A and the second heat storage air conditioning unit 43B can be separated from each other, only the configuration corresponding to the desired air flow path is selected. Can be installed. For example, when only the air conditioning stop-heat storage mode and the air conditioning operation-heat radiation mode are performed (when the air is necessarily heat exchanged with the heat storage unit 12), the switching unit 44 and the second heat storage air conditioning unit 43B are omitted. Only the first heat storage air conditioning unit 43 </ b> A needs to be provided, and the introduction cost of the air conditioner 4 can be reduced.

[III] Modifications to Each Embodiment While the embodiments of the present invention have been described above, the specific configuration and means of the present invention are within the scope of the technical idea of each invention described in the claims. It can be arbitrarily modified and improved within. Hereinafter, such a modification will be described.

(Combination of each embodiment)
The configurations shown in the embodiments can be combined with each other. For example, the heat storage air-conditioning unit 31 of the third embodiment can be divided like the heat storage air-conditioning unit 43 of the fourth embodiment. Good.

(Addition or replacement of components)
Except as otherwise noted, known components can be added to the air conditioners 1 to 4, or the components of the air conditioners 1 to 4 can be replaced with known components. For example, in the fourth embodiment, when the pressure loss increases by providing a plurality of filters 14, a fan may be added to cover the pressure loss. Further, instead of the three-way valves V1 and V2, a two-way valve may be provided for each of the branched pipes. In this case, by opening and closing each two-way valve, substantially the same as the three-way valve. Channel switching can be performed.

  The present invention is useful for utilizing the residual heat by performing cascade heat exchange on the residual heat in the middle and low temperature range of 0 ° C. or higher.

It is a figure for demonstrating the basic concept of this invention. It is a figure which shows the structure of the air conditioning apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the driving | running state of the thermal storage air conditioning unit in an air conditioning stop-heat storage mode. It is a figure which shows the driving | running state of the thermal storage air conditioning unit in air-conditioning driving | operation-heat dissipation mode. It is a figure which shows the driving | running state of the thermal storage air conditioning unit in an air conditioning driving | operation-thermal storage mode. It is a figure which shows the structure of the air conditioning apparatus which concerns on Embodiment 2. FIG. It is a figure which shows the structure of the air conditioning apparatus which concerns on Embodiment 3. FIG. It is an enlarged view of the connection part of FIG. It is an enlarged view of the other connection structure of FIG. It is a figure which shows the structure of the air conditioning apparatus which concerns on Embodiment 4. FIG.

Explanation of symbols

1, 2, 3, 4 Air conditioner 10, 20, 31, 43 Thermal storage air conditioning unit 43A First thermal storage air conditioning unit 43B Second thermal storage air conditioning unit 11 Heat exchanger 12 Thermal storage 12a Thermal insulation housing 12b Thermal storage material 13 Blower 13a Motor 13b Fan belt 13c Fan 13d Vibration isolator 14 Filter 15, 21, 33, 34, 45-49 Housing 15a, 21b, 34c Bulkhead 15b, 15c, 21a, 34a Air inlet 15d, 33a, 34b, 45a, 46a, 46b, 47a, 47b, 48a, 48b Ventilation port 16 Air duct 16a, 33b, 45b Exhaust port 17 Main piping 17a Connection portion 17b, 17c, 35b, 35c Flange 18, 19 Pull-in piping 30, 42 General air conditioning unit 32 Humidifier 32a Water supply pipe 35 Flexible joint 35a Bellows 41 Blower unit 44 Switching unit C Ceiling D1, D2, D3, D4, D5 Damper G Floor surface SP1, SP2 Storage space SP2a Introductory path SP2b Detour V1, V2 Three-way valve V3 Two-way valve

Claims (5)

An air conditioner comprising: a heat exchanger that adjusts the temperature and / or humidity of the gas; a heat accumulator that stores the heat of the heat transfer medium; and a blower that allows gas to be introduced into the heat exchanger and the heat accumulator. A device,
It is possible to form a flow path for introducing the heat carrier medium so as to reach the heat accumulator through the heat exchanger,
It is possible to form an air passage that introduces the gas through the heat accumulator so as to reach the heat exchanger,
The heat storage medium in the heat storage device is a latent heat storage material,
An air conditioner characterized by. The heat exchanger, the heat accumulator, and the blower are housed in a hollow body,
In the hollow body,
At least one air inlet for taking in the gas from the outside to the inside of the hollow body;
At least one exhaust port for discharging the gas from the inside of the hollow body to the outside;
A first air passage from the intake port to the exhaust port through the heat accumulator and the heat exchanger sequentially;
A second air passage from the intake port to the exhaust port through the heat exchanger without reaching the heat accumulator;
An air passage switching means for selectively switching the first air passage or the second air passage;
The air conditioner according to claim 1, wherein the air conditioner is provided. The heat exchanger, the heat accumulator, and the blower are housed in a hollow body,
In the hollow body,
A first flow path for introducing the heat transfer medium that has finished heat exchange with the heat exchanger into the heat accumulator;
A second flow path for refluxing the heat transfer medium that has finished heat exchange with the heat exchanger to a predetermined heat source without being introduced into the heat accumulator;
Channel switching means for selectively switching the first channel or the second channel;
The air conditioner according to claim 1 or 2, wherein the air conditioner is provided. The hollow body is configured as one housing,
In the housing, the heat exchanger, the heat accumulator, and the blower are accommodated substantially integrally.
The air conditioner according to any one of claims 1 to 3. The hollow body has a plurality of cases that can be divided,
Provided with a connecting means for connecting the plurality of cases to each other;
The air conditioner according to any one of claims 1 to 3.

Images