JP2011116234A - Air-conditioning system for moving body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air-conditioning system for a moving body capable of preventing an increase in a heat load of an air conditioner by the presence of a heat storage material, even in a state where the heat storage material becomes a hindrance to heating or cooling by the air conditioner. <P>SOLUTION: This air-conditioning system for the moving body has a first air conditioner 17 for heating or cooling the indoor side formed in the moving body and a second air conditioner 20 for heating or cooling the indoor side by a heat exchange with the heat storage material. The heat storage material includes a switching means arranged indoors and switching to a state of exchanging heat between the heat storage material and an indoor space and a state of preventing the heat exchange between the heat storage material and the indoor space. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a moving body air conditioning system mounted on a moving body such as a plug-in hybrid vehicle or an electric vehicle.

As a technique related to a conventional mobile air conditioning system, for example, there is an electric vehicle heating device disclosed in Patent Document 1.
Patent Document 1 discloses that a heat storage body is provided in the passenger compartment of an electric vehicle, and this heat storage body is provided in the vicinity of a passenger seated in a seat.
When a heating switch is turned on when charging the battery for traveling by connecting a power outlet to an external power source, the heat storage element generates heat in the heating element, and the heat generated in the heating element The heat is stored.
In this type of heating device, since the heating element generates heat and is stored in the heat storage body during charging of the traveling battery, the battery power is consumed when the occupant travels on the electric vehicle. There is nothing, and the passenger is warmed directly by the heat dissipation of the heat storage body.

By the way, according to this kind of heating device, there is a case where the amount of heat of the heat storage body is not sufficient and the heat is completely radiated.
In the state where the heat storage body has completely radiated heat, heating by the heat storage body cannot be maintained.
On the other hand, in an automobile, it is widely known to provide an air conditioner that performs air conditioning of the passenger compartment using exhaust heat of the engine or refrigerant.
Therefore, for example, when another air conditioner is provided in an electric vehicle and it is desired to perform heating after heat dissipation from the heat storage body, an air conditioning system that performs heating by the air conditioner can be considered.
That is, in this type of air conditioning system, it becomes possible to perform heating with another air conditioner even after heating by the heat storage body becomes impossible.

JP 2002-215881 A

However, in an air conditioning system provided with an air conditioner that is separate from the heat storage body, after the heat storage body has completely radiated heat, even if the air conditioner is separate from the heat storage body, When this heat storage body is lower than the set temperature of the air conditioning, a phenomenon occurs in which the heat storage body takes away the heat supplied from the air conditioner.
Specifically, when heating is performed by the heat storage body provided in the vehicle interior and the heat storage body is completely radiated, the heat storage body has substantially the same temperature as the vehicle interior.
After that, when heating is performed again, an air conditioner different from the heat storage body is used. However, in a state where the temperature of the heat storage body is lower than the intended heating temperature, the heat storage body is unnecessarily warmed, and the heat storage body There is a problem that the heat load required for heating by the air conditioner increases as compared with the case where the air conditioner is not provided.
In particular, when the heat capacity of the heat storage body is large, the heat load of heating by the air conditioner also increases corresponding to the heat capacity of the heat storage body.
That is, depending on the state, the heat storage body is present to prevent heating by the air conditioner.
The same problem occurs when cooling with this type of air conditioning system.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a heat load of the air conditioner due to the presence of the heat accumulator even when the heat accumulator interferes with heating or cooling by the air conditioner. It is in the provision of the air-conditioning system for moving bodies which can prevent the increase in the number.

  In order to solve the above problems, the present invention provides a second air conditioner that heats or cools a room by heat exchange with a first air conditioner that heats or cools the room provided in the moving body and a heat storage material. An air conditioning system for a moving body comprising the apparatus, wherein the heat storage material is installed in the room, heat is exchanged between the heat storage material and an indoor space, and the heat storage material and the Switching means for switching to a state in which heat exchange with the indoor space is prevented is provided.

According to the present invention, when heat is exchanged between the heat storage material and the indoor space by switching the switching means, the heating to the room by heat radiation of the heat storage material of the second air conditioner or the room by heat absorption is performed. Cooling can be performed.
If the heat storage body is in a state that hinders heating or cooling by the first air conditioner during indoor heating or cooling by the first air conditioner, the switching means prevents heat exchange between the heat storage material and the indoor space. Thus, the heat exchange between the heat storage material and the indoor space is prevented.
As a result, heat exchange between the heat storage material and the indoor space is prevented even when the heat storage body is in a state that hinders heating or cooling by the first air conditioner. Alternatively, cooling is not hindered, and an increase in the heat load of the air conditioner due to the heat storage body can be prevented.

  According to the present invention, the mobile air conditioning system includes a heat storage material container that houses the heat storage material, and the switching unit has one end connected to the heat storage material container and the other end arranged outdoors. You may provide the thermal storage material channel | path and the on-off valve which opens and closes the said thermal storage material channel | path.

In this case, during indoor heating or cooling by the first air conditioner, when the heat storage body interferes with heating or cooling by the first air conditioner, heat is stored from the heat storage material container provided in the living room by opening the on-off valve. Lead the material out of the room.
By deriving the heat storage material from the heat storage material container to the outside, it is possible to prevent heat exchange between the heat storage material and the indoor space.

  In the present invention, the mobile air conditioning system may further include an external heat storage material container connected to the other end of the heat storage material passage and provided outside the room.

In this case, in a state where the heat storage material hinders heating or cooling by the air conditioner, the heat storage material is led out from the heat storage material container to the outdoor external heat storage material container.
For this reason, in a state where the heat storage material hinders heating or cooling by the air conditioner, the heat storage material can be led out of the room.
In addition, when it is necessary to return the heat storage material from the outside to the room, the heat storage material is returned from the external heat storage material container to the heat storage material container, for example, by using means such as a pump or using a height difference. Is also possible.

In the present invention, the moving body air conditioning system further includes a control unit that controls the on-off valve, wherein the control unit has a temperature of the heat storage material stored in the heat storage material container exceeding a predetermined temperature. The opening / closing means may be opened.
Note that the temperature of the heat storage material exceeds the predetermined temperature means that the temperature of the heat storage material exceeds the predetermined temperature from the predetermined temperature after heating, and the case where the temperature of the heat storage material exceeds the predetermined temperature from the predetermined temperature after cooling.

In this case, when the temperature of the heat storage material stored in the heat storage material container exceeds a predetermined temperature, the control means determines that the heat storage material needs to be led out of the room, and the control means opens the on-off valve and installs it indoors. The heat storage material is derived from the stored heat storage material container.
That is, when the temperature of the heat storage material in the heat storage material container exceeds a predetermined temperature set in advance, the heat storage material can be automatically derived from the heat storage material container.

  Further, in the present invention, the mobile air conditioning system includes a heat storage material container that houses the heat storage material, and the switching unit includes a transfer unit that transfers the heat storage material container from the room to the outside. Also good.

In this case, it is possible to prevent heat exchange between the heat storage material container and the indoor space by transferring the heat storage container to the outside through the transfer means.
Even in the state where not only the heat storage material but also the heat storage material container hinders heating or cooling by the first air conditioner, heat exchange between the heat storage material container and the indoor space is prevented, and the heat storage material container depends on the air conditioner. Heating or cooling is not hindered, and an increase in the heat load of the air conditioner due to the heat storage body can be prevented.

  According to the present invention, in the above moving body air conditioning system, the heat storage material container that houses the heat storage material is provided, and the switching unit is configured to block between the heat storage material container and the indoor space; You may provide the heat insulation cover which can be switched to the state which exposes a material container with respect to the said indoor space.

In this case, the heat insulating cover covers the periphery of the heat storage material container, thereby blocking the space between the heat storage material container and the indoor space, or removing the heat insulating cover from the heat storage material container to expose the heat storage material container to the indoor space. The state can be switched.
As a result, it is not necessary to move the heat storage material or the heat storage material container to the outside even if the heat storage material is in a state that hinders heating or cooling by the first air conditioner.

  According to the present invention, there is provided an air conditioning system for a moving body that can prevent an increase in the thermal load of the air conditioner due to the presence of the heat storage material even when the heat storage material is in a state that hinders heating or cooling by the air conditioner. can do.

1 is a schematic side view of a vehicle equipped with an air conditioning system according to a first embodiment. 1 is a schematic configuration diagram of an air conditioning system according to a first embodiment. It is a flowchart which shows the procedure which derives | leads out a thermal storage material from a vehicle interior. It is an operation explanatory view explaining an operation of an air-conditioning system. It is a schematic block diagram of the air conditioning system which concerns on 2nd Embodiment. It is a schematic side view of the vehicle carrying the air conditioning system which concerns on 3rd Embodiment. It is a flowchart which shows another procedure which derives | leads out a thermal storage material from a vehicle interior. It is a schematic block diagram of the air conditioning system which concerns on another example.

(First embodiment)
Hereinafter, a moving body air conditioning system according to a first embodiment (hereinafter simply referred to as an “air conditioning system”) will be described with reference to the drawings.
The first embodiment is an example applied to a plug-in hybrid vehicle (hereinafter referred to as “PHEV”) as a moving body.

A driver seat and a passenger seat are provided side by side in the vehicle width direction at a front portion of the vehicle interior 11 as a vehicle interior.
Front seats 12 are respectively installed in the driver seat and the passenger seat (only the front seat 12 on the passenger seat side is shown in FIG. 1).
A rear seat 13 is provided behind the front seat 12, and a luggage compartment is provided behind the rear seat 13.
An instrument panel 14 is disposed in front of the front seat 12 over the vehicle width direction.
A steering wheel 15 is provided on the driver's seat side of the instrument panel 14.
Although not shown, the instrument panel 14 includes display devices such as a meter and switches necessary for driving the vehicle 10.

An engine room 16 is formed in front of the instrument panel 14, and the engine room 16 includes an internal combustion engine as a travel drive source and a travel motor having a power generation function (not shown).
The engine room 16 is provided with a first air conditioner 17 having a vapor compression refrigeration cycle.
The first air conditioner 17 sucks and discharges the refrigerant, an electric compressor, a condenser that cools the discharged refrigerant, an expansion valve that decompresses the refrigerant cooled by the condenser, and evaporates the decompressed refrigerant The evaporator that cools the air blown into the passenger compartment 11 is connected in an annular fashion in sequence (none shown).
The conditioned air for heating or cooling obtained by the first air conditioner 17 is supplied into the vehicle compartment 11 through the blowout duct 18, and the air in the vehicle compartment 11 is supplied to the first air conditioner 17 through the suction duct 19. The
A heat source of air for heating by the first air conditioner 17 is obtained by exhaust heat of the engine, and air for cooling is obtained based on driving of an electric compressor included in the first air conditioner 17.

The air conditioning system of 1st Embodiment is provided with the 1st air conditioner 17 and the 2nd air conditioner 20 demonstrated below.
The second air conditioner 20 is an air conditioner that heats or cools the passenger compartment 11 by heat exchange between the heat storage material L and the interior space of the passenger compartment 11, and is provided separately from the first air conditioner 17. Yes.
The 2nd air conditioner 20 is provided with the 1st heat storage material container 21 as a heat storage material container installed in the compartment 11, and the 1st heat storage material container 21 is between a driver's seat and a passenger seat in the vehicle width direction. The vehicle front-rear direction is located between the instrument panel 14 and the front seat 12.

The heat storage material L stored in the first heat storage material container 21 is water. For example, when the inside of the passenger compartment 11 is cold, the heat storage material L is in a high temperature state (for example, hot water state) and is a heat radiation source for heating. As a heat storage body, heat dissipation is performed.
On the contrary, when the inside of the passenger compartment 11 becomes hot, the heat storage material L is in a low temperature state (for example, in an ice state), and heat is absorbed by the heat storage material L as a heat absorption source for cooling.
The heat storage material L in the first heat storage material container 21 can be used as a heat dissipation source by storing heat in the heat storage material L by heat generated by energization of a large number of Peltier elements (not shown). Is also possible by taking heat away from the heat storage material L by absorbing heat by energizing each Peltier element in the opposite direction.
When a large number of Peltier elements are used to make the heat storage material L a heat radiation source or a heat absorption source, a part of external power is supplied to each Peltier element during charging of a battery (not shown) mounted on the vehicle 10. It is preferable to increase the temperature or decrease the temperature of the heat storage material by energizing.
Alternatively, by directly enclosing hot water or ice in the first heat storage material container 21, the heat storage material L in the first heat storage material container 21 may be used as a heat radiation source or a heat absorption source.

The second air conditioner 20 includes a second heat storage material container 22 as an external heat storage material container installed in the engine room 16 separately from the first heat storage material container 21.
The 2nd heat storage material container 22 is installed in the position lower than the installation position in the vehicle interior 11 of the 1st heat storage material container 21, and with the 1st heat storage material container 21 via the piping 23 which forms a heat storage material channel | path. It is connected.
The pipe 23 includes a main pipe 23A connected to the first heat storage material container 21, a first branch pipe 23B and a second branch pipe 23C branched from the main pipe 23A.
The first branch pipe 23 </ b> B is connected to the upper part of the second heat storage material container 22, and the second branch pipe 23 </ b> C is connected to the lower part of the second heat storage material container 22.
The first branch pipe 23B is provided with an on-off valve 24 for opening and closing the heat storage material passage. When the heat storage material L is accommodated in the first heat storage material container 21, when the on-off valve 24 is opened, the heat storage material L is It is possible to move from the first heat storage material container 21 to the second heat storage material container 22 at a lower position through the pipe 23.
The second branch pipe 23C is provided with a pump 25 and a check valve 26. When the heat storage material L is stored in the second heat storage material container 22, the pump 25 transfers the heat storage material L to the first heat storage material container. It is possible to transfer to 21.
The check valve 26 prevents the heat storage material L from being led out to the second heat storage material container 22 through the second branch pipe 23C when the heat storage material L is stored in the first heat storage material container 21. Is provided.
In this embodiment, the piping 23 and the on-off valve 24 mainly correspond to switching means, and the switching means is in a state in which heat is exchanged between the heat storage material L and the vehicle compartment 11, and the heat storage material L and the vehicle compartment 11. It is possible to switch to a state in which heat exchange between the two is prevented.

As shown in FIG. 2, a controller 27 is provided as control means for controlling the on-off valve 24.
The controller 27 is connected to a first temperature sensor 28 of the heat storage material L in the first heat storage material container 21 and a second temperature sensor 29 that measures the temperature outside the vehicle S.
Even when the vehicle 10 is in a key-off state, the controller 27 continues to function. For example, the controller 27 receives signals from the first temperature sensor 28 and the second temperature sensor 29, and controls the on-off valve 24 to open and close. It is possible to
On the other hand, the first air conditioner 17 provided separately from the second air conditioner 20 is an air duct 18 that blows conditioned air from the first air conditioner 17 to the passenger compartment 11 and air from the passenger compartment 11 to the first air conditioner 17. A suction duct 19 is provided.
The first air conditioner 17 and the pump 25 are controlled by an ECU (Electric Control Unit) (not shown), and use power stored in a battery or power generated by a traveling motor driven as a generator as a power source.

In this embodiment, the controller 27 is based on the relationship between the temperature of the outside S and the temperature of the heat storage material L, and whether or not it is necessary to derive the heat storage material L in the first heat storage material container 21 to the second heat storage material container 22. Judging.
The flowchart of FIG. 3 shows a procedure for determining by the controller 27 whether or not the heat storage material L in the first heat storage material container 21 needs to be led out to the second heat storage material container 22.
In this flow, first, it is determined whether or not the temperature of the outside S measured by the second temperature sensor 29 is higher than the cooling determination temperature of 25 ° C. (step S1).
When the temperature outside the vehicle S is higher than the cooling determination temperature of 25 ° C., it is considered that the interior of the passenger compartment 11 needs to be cooled.
In this case, it progresses to step S2 which determines whether the temperature of the thermal storage material L has exceeded the preset temperature 20 degreeC equivalent to predetermined temperature to the high temperature side.

In step S2, the set temperature 20 ° C. is compared with the temperature of the heat storage material L, and the necessity of derivation of the heat storage material L to the outside of the passenger compartment 11 that is outside the room is determined based on the comparison result.
When the temperature of the heat storage material L exceeds the set temperature 20 ° C. to the high temperature side, the cooling by the heat storage material L is not functioning, and thus the process proceeds to step S3 for deriving the heat storage material L from the first heat storage material container 21. .
In step S <b> 3, the controller 27 opens the on-off valve 24 and derives the heat storage material L from the first heat storage material container 21.
The heat storage material L that has lost its heat absorption capability is led out from the first heat storage material container 21 to the second heat storage material container 22 through the pipe 23, and the flow ends.
In step S2, when the temperature of the heat storage material L is equal to or lower than the set temperature 20 ° C., the heat storage material L has a heat absorption capability and the cooling by the heat storage material L is continued, and the process returns to step S1.

In step S1, when the temperature of the outside S is 25 ° C. or less which is the cooling determination temperature, it is necessary to confirm whether or not the heating of the passenger compartment 11 is a necessary condition.
For this reason, it progresses to step S4 which determines whether the temperature of S outside a vehicle is lower than 15 degreeC which is heating determination temperature.
In step S4, when the temperature of the outside S measured by the second temperature sensor 29 is lower than the heating determination temperature of 15 ° C., it is an environment that requires heating in the passenger compartment 11, so the temperature of the heat storage material L is It progresses to step S5 which determines whether it is over the low temperature side from 20 degreeC preset temperature.
In addition, when the temperature of S outside a vehicle exceeds 15 degreeC which is heating determination temperature in step S4, there exists a possibility of an environment where neither cooling nor heating is required, and it returns to step S1.

In step S5, the set temperature 20 ° C. is compared with the temperature of the heat storage material L, and the necessity of derivation of the heat storage material L out of the passenger compartment 11 is determined based on the comparison result.
When the temperature of the heat storage material L exceeds the set temperature 20 ° C. on the lower temperature side (when the temperature of the heat storage material L is lower than 20 ° C.), the heating by the heat storage material L is not already functioning. The process proceeds to step S3 for deriving from the first heat storage material container 21.
In step S3, similarly, the controller 27 opens the on-off valve 24, the heat storage material L that has lost its heat radiation capability is led out from the first heat storage material container 21 to the second heat storage material container 22, and the process ends.
In step S5, when the temperature of the heat storage material L is equal to or higher than the set temperature 20 ° C., the heat storage material L has a heat dissipation capability and heating by the heat storage material L is continued, so the process returns to step S1.
Note that the cooling determination temperature in step S1 of FIG. 3 is 25 ° C., the set temperature in steps S2 and S5 is 20 ° C., and the heating determination temperature in step S4 is 15 ° C., but each temperature can be set and changed. When changing, it is preferable to change each set temperature in the range of about ± 5 ° C.
Further, the difference between the cooling determination temperature and the set temperature and the difference between the heating determination temperature and the set temperature are 5 ° C., but the temperature of the heat storage material L is different from the cooling determination temperature and the heating determination temperature by less than 5 ° C. Then, the heat storage material L is in a state of substantially losing its heating capacity or cooling capacity. However, this temperature difference may not be 5 ° C., but may be 5 ° C. or less, or 0 ° C. (the temperature of the heat storage material L is the same as the cooling determination temperature or the heating determination temperature).

Next, the operation of the air conditioning system according to the first embodiment will be described.
First, the temperature of the outside S is higher than 25 ° C. as in summer, and after cooling the interior of the passenger compartment 11 by the second air conditioner 20, the vehicle 10 is stopped for a long time, thereby cooling the heat storage material L. A case will be described in which the capacity is lost and the temperature in the passenger compartment 11 rises, and then the first air conditioner 17 performs cooling again.
At the time when the passenger gets on the vehicle 10, the heat storage material L frozen in advance is in the first heat storage material container 21.
As shown in FIG. 4A, while the vehicle 10 is traveling, heat exchange between the heat storage material L and the vehicle compartment 11 is performed, and heat in the vehicle compartment 11 is absorbed by the heat storage material L. The temperature in the passenger compartment 11 decreases, and the interior of the passenger compartment 11 is cooled.
At this time, the controller 27 receives the signal from the second temperature sensor 29 and recognizes that the temperature of the outside S is higher than the cooling determination temperature of 25 ° C., and the temperature of the heat storage material L is higher than 20 ° C. We recognize that it is not over. For this reason, the heat storage material L is held in the first heat storage material container 21 without being led out of the passenger compartment 11.
As described above, the interior of the passenger compartment 11 is cooled only by the second air conditioner 17, and the second air conditioner 17 uses electric power charged in the battery or electric power generated by the traveling motor as a generator. Without cooling, the vehicle interior 11 is cooled.
As the heat storage material L continuously absorbs the heat in the passenger compartment 11, the heat storage material L in an icing state is gradually liquefied, and the heat absorption capacity of the heat storage material L gradually decreases.

Next, when the vehicle 10 is stopped for a long time, such as when the occupant leaves the vehicle 10, the heat storage material L and the heat storage material L can be used while the heat storage material L has a heat absorption capability of absorbing heat in the passenger compartment 11. Heat exchange with the passenger compartment 11 is performed, and cooling of the passenger compartment 11 by the second air conditioner 17 is maintained.
The controller 27 compares the temperature of the heat storage material L with the set temperature 20 ° C. based on the signal of the first temperature sensor 28, but while the temperature of the heat storage material L is lower than the set temperature 20 ° C., the heat storage material L Is kept in the first heat storage material container 21 as it is.
Furthermore, if the stop state of the vehicle 10 continues, the temperature of the heat storage material L increases, and the controller 27 finally determines that the temperature of the heat storage material L exceeds the set temperature 20 ° C. on the high temperature side.
The controller 27 determines that the heat storage material L has lost its cooling capacity, and controls and opens the on-off valve 24.

Then, as shown in FIG. 4B, the heat storage material L passes from the first heat storage material container 21 to the second heat storage material container 22 provided at the low position of the engine room 16 through the main pipe 23A and the first branch pipe 23B. Derived.
The heat storage material L is accommodated in the second heat storage material container 22, the first heat storage material container 21 is almost empty, and the heat storage material L exists in the first heat storage material container 21 and can exchange heat with the interior space of the passenger compartment 11. The heat storage material L, which has been stored in the second heat storage material container 22, is in a state in which heat exchange with the vehicle compartment 11 is prevented.
The interior of the passenger compartment 11 in this state is not cooled by the second air conditioner 17, and the interior of the passenger compartment 11 rises according to the temperature of the outside S.

Next, when the occupant gets on and travels the vehicle 10, the first air conditioner 17 is activated to cool the passenger compartment 11.
The interior of the passenger compartment 11 is cooled by the operation of the first air conditioner 17. At this time, as shown in FIG. 4C, the heat storage material L is accommodated in the second heat storage material container 22. The air conditioner 17 does not cool the heat storage material L.
By the way, in the case where the heat storage material L that has lost its heat absorption capacity is still present in the first heat storage material container 21, the heat storage material L is unnecessarily cooled even if the first air conditioner 17 cools the interior of the vehicle compartment 11. Thus, cooling in the passenger compartment 11 is hindered, and the heat load of the first air conditioner 17 is increased.
For this reason, by deriving the heat storage material L whose cooling capacity has been lost to the second heat storage material container 22 provided outside the vehicle compartment 11, the first heat storage material container 21 is emptied, and the heat storage material L whose cooling capacity has been lost. Without increasing the temperature, an increase in the heat load necessary for cooling the first air conditioner 17 is avoided.
Therefore, the cooling of the first air conditioner 17 in which the first heat storage material container 21 is emptied is a heat load as compared with the case where the heat storage material L that has lost its cooling capacity is cooled while being present in the first heat storage material container 21. Therefore, the vehicle interior 11 is cooled in a short time, and the energy required for cooling is also reduced.

Next, as in cold weather, the temperature of the outside S is under a low temperature of less than 15 ° C., the interior of the passenger compartment 11 is heated by the second air conditioner 20, and then the vehicle 10 is stopped for a long time, whereby the heat storage material. A case will be described in which the heating capacity of L is lost and the temperature in the passenger compartment 11 decreases, and then the first air conditioner 17 performs heating again.
At the time when the passenger gets on the vehicle 10, the heat storage material L that has stored heat up to just before boiling is in the first heat storage material container 21.
As shown in FIG. 4A, when the vehicle 10 is traveling, heat exchange between the heat storage material L and the vehicle compartment 11 is performed, and the temperature in the vehicle interior 11 rises due to heat dissipation of the heat storage material L. The inside of the chamber 11 is warmed.
At this time, the controller 27 receives the signal from the second temperature sensor 29 and recognizes that the temperature outside the vehicle S is lower than the cooling determination temperature of 15 ° C., and the temperature of the heat storage material L is higher than 20 ° C. We recognize that it is over. For this reason, the heat storage material L is held in the first heat storage material container 21 without being led out of the passenger compartment 11.
Thus, the interior of the passenger compartment 11 is heated only by the second air conditioner 20 without consuming electric energy such as electric power charged in the battery.
As the heat storage material L continuously dissipates heat to the passenger compartment 11, the temperature of the heat storage material L gradually decreases, and the heat dissipation capability of the heat storage material L gradually decreases.

Next, when the stationary state of the vehicle 10 is continued for a long time, heat exchange between the heat storage material L and the passenger compartment 11 is performed while the heat dissipation capability of the heat storage material L exists, and the vehicle by the second air conditioner 20 Heating in the room 11 is maintained.
The controller 27 compares the temperature of the heat storage material L with the set temperature 20 ° C. based on the signal of the first temperature sensor 28, but while the temperature of the heat storage material L is higher than the set temperature 20 ° C., the heat storage material L Is kept in the first heat storage material container 21 as it is.
Furthermore, if the stop state of the vehicle 10 continues, the temperature of the heat storage material L decreases, and when the temperature of the heat storage material L finally exceeds the set temperature 20 ° C. on the low temperature side (lower than the set temperature 20 ° C.), the controller 27 judge.
The controller 27 determines that the heat storage material L has lost its heating capacity, and controls and opens the on-off valve 24.

Then, as shown in FIG. 4B, the heat storage material L is led out from the first heat storage material container 21 to the second heat storage material container 22 through the main pipe 23A and the first branch pipe 23B.
For this reason, the heat storage material L is accommodated in the 2nd heat storage material container 22, the inside of the 1st heat storage material container 21 is a substantially empty state, exists in the 1st heat storage material container 21, and with respect to the interior space of the compartment 11 Thus, the heat storage material L that has been capable of exchanging heat is accommodated in the second heat storage material container 22 so that heat exchange with the vehicle compartment 11 is prevented.
The interior of the passenger compartment 11 in this state is not heated by the second air conditioner 20, and the interior of the passenger compartment 11 decreases according to the temperature outside the vehicle S.

Next, when the passenger gets on and travels the vehicle 10, the first air conditioner 17 is activated to heat the interior of the passenger compartment 11, and the interior of the passenger compartment 11 is heated by the operation of the first air conditioner 17. The
At this time, since the heat storage material L is accommodated in the second heat storage material container 22 as shown in FIG. 4C, the first air conditioner 17 does not warm the heat storage material L.
By the way, if the heat storage material L that has lost its heat radiation capacity is present in the first heat storage material container 21, the heat storage material L is unnecessarily heated even if the first air conditioner 17 heats the passenger compartment 11. Thus, heating in the passenger compartment 11 is hindered, and the heat load of the first air conditioner 17 is increased.
For this reason, in this embodiment, the 1st heat storage material container 21 is made empty by leading out the heat storage material L which lost heating capacity to the 2nd heat storage material container 22 provided in the vehicle interior 11, and heating capacity is made. Without increasing the lost heat storage material L, an increase in the heat load necessary for heating the first air conditioner 17 is avoided.
Therefore, the cooling of the first air conditioner 17 in which the first heat storage material container 21 is emptied is a heat load as compared with the case where the heat storage material L that has lost its heating capacity is heated while being present in the first heat storage material container 21. Therefore, the vehicle interior is heated in a short time, and the energy required for heating is also reduced.

In addition, since the vehicle 10 of this embodiment is PHEV, the plug with which the vehicle 10 is provided can be connected to an external power supply, and battery charging can be performed.
At this time, the pump 25 is driven using a part of the electric power of the external power source, and the heat storage material L is transferred from the second heat storage material container 22 to the first heat storage material container 21.
At the time of transfer, the opening / closing valve 24 closes the first branch pipe 23B.
When the heat storage material L is transferred to the first heat storage material container 21, the heat storage material L is turned into a heat radiation source or a heat absorption source using the power of the external power source during charging of the battery.

The first embodiment has the following effects.
(1) The vehicle compartment 11 can be heated or cooled by absorbing heat from the heat storage material L of the second air conditioner 20, and the vehicle compartment 11 can be heated or cooled by the first air conditioner 17. be able to. If the heat storage material L is in a state that hinders heating or cooling by the first air conditioner 17 during heating or cooling of the vehicle compartment 11 by the first air conditioner 17, the valve 24 opens the heat storage material L. The state is switched to a state in which heat exchange with the passenger compartment 11 is prevented. As a result, even if the heat storage body is in a state that hinders heating or cooling by the first air conditioner 17, heat exchange between the heat storage material L and the passenger compartment 11 is prevented. Heating or cooling by the air conditioner 17 is not hindered. Thereby, increase of the heat load required for heating or cooling of the 1st air conditioner 17 by the thermal storage material L can be prevented.
(2) During heating or cooling of the passenger compartment 11 by the first air conditioner 17, when the heat storage material L hinders heating or cooling by the first air conditioner 17, the on-off valve 24 is opened to open the first heat storage material. The heat storage material L is derived from the container 21 to the second heat storage material container 22. By deriving the heat storage material L from the first heat storage material container 21 to the second heat storage material container 22, it is possible to prevent heat exchange between the heat storage material L and the vehicle compartment 11.

(3) In a state where the heat storage material L hinders heating or cooling by the first air conditioner 17, the heat storage material L is led out from the first heat storage material container 21 to the second heat storage material container 22, but the second heat storage material L The heat storage material L led out to the container 22 can be returned to the first heat storage material container 21 by the operation of the pump 25. For this reason, in the state in which the heat storage material L hinders heating or cooling by the first air conditioner 17, even if the heat storage material L is led out of the passenger compartment 11, the heat storage material L is used as a heat radiation source or a heat absorption source. When it is necessary to return the heat storage material L to the vehicle interior 11, the heat storage material L can be returned to the vehicle interior 11.
(4) After heating or cooling the passenger compartment 11 by the second air conditioner 20, the controller 27 detects when the temperature of the heat storage material L accommodated in the first heat storage material container 21 exceeds the set temperature. It is determined that derivation outside the passenger compartment 11 is necessary. Then, the controller 27 opens the on-off valve 24 and derives the heat storage material L from the first heat storage material container 21. That is, when the temperature of the heat storage material L exceeds the set temperature, the heat storage material L can be automatically derived from the first heat storage material container 21.

(5) The second heat storage material container 22 provided outside the vehicle compartment 11 is provided at a position lower than the installation position of the first heat storage material container 21, and both the heat storage material containers 21 and 22 are connected by a pipe 23. For this reason, the heat storage material L in the first heat storage material container 21 can be led out to the second heat storage material container 22 only by opening the on-off valve 24.
(6) Since the heat storage material L exists in the closed space formed by the first heat storage material container 21, the second heat storage material container 22 and the pipe 23, there is no need to replace the heat storage material L, and there is no foreign matter in the heat storage material L. Is difficult to enter.

(Second Embodiment)
Next, an air conditioning system according to a second embodiment will be described.
The air conditioning system according to the second embodiment differs from the first embodiment in that the second heat storage material container is not installed in the second air conditioner.
FIG. 5 shows an air conditioning system according to the second embodiment. Among the components, the same elements as those of the air conditioning system of the first embodiment are denoted by the same reference numerals as those in the first embodiment. .

As shown in FIG. 5, the second air conditioner 30 of the second embodiment includes a heat storage material container 31 as a heat storage material container provided in the passenger compartment 11.
The heat storage material container 31 basically has the same configuration as the first heat storage material container 21 of the first embodiment, but the heat storage material container 31 has a heat storage material supply pipe 32 and a heat storage material discharge pipe 33 as a heat storage material passage. Is connected.
The heat storage material supply pipe 32 is a pipe that enables supply of the heat storage material L to the heat storage material container 31 from the outside.
In this embodiment, the heat storage material supply pipe 32 extends through a partition wall (not shown) between the vehicle compartment 11 and the engine room, and the supply port 32A is provided at the end of the heat storage material supply pipe 32 on the engine room side. Is provided.

The heat storage material discharge pipe 33 is a pipe that communicates from the bottom of the heat storage material container 31 to the outside S of the vehicle 10 from the bottom of the vehicle 10, and the heat storage material discharge pipe 33 is provided with an opening / closing valve 34.
The on-off valve 34 has the same configuration as the on-off valve 24 of the first embodiment, and is controlled to open and close by a controller 27 as control means.
The heat storage material L in the second air conditioner 30 of the second embodiment is discharged to the outside of the vehicle after use after fulfilling the function as the heat storage material.
Therefore, in the second embodiment, the heat storage material discharge pipe 33 and the on-off valve 34 correspond to switching means.
The controller 27 determines whether or not the heat storage material L in the heat storage material container 31 needs to be led out to the vehicle outside S based on the relationship between the temperature outside the vehicle S and the temperature of the heat storage material L.
The controller 27 of this embodiment controls the on-off valve 34 according to the flow shown in FIG. 3 as in the first embodiment.

In this embodiment, the opening / closing valve 34 is opened in the state where the heat storage material L hinders heating or cooling by the first air conditioner 17 during heating or cooling of the vehicle compartment 11 by the first air conditioner 17. L is led out of the vehicle S through the heat storage material discharge pipe 33 from the heat storage material container 31.
Specifically, the heat storage material L is discharged onto the road.
By deriving the heat storage material L from the heat storage material container 31 to the outside S of the vehicle, the inside of the heat storage material container 31 becomes almost empty.
That is, the heat storage material L is led out of the vehicle S, thereby realizing a state in which heat exchange between the heat storage material L and the passenger compartment 11 is prevented.
In this embodiment, the heat storage material L that has lost the heating capacity or the cooling capacity is led out of the passenger compartment 11 to make the heat storage material container 31 almost empty, and the heat storage material L that has lost the heating capacity or the cooling capacity is warmed. Or increasing the heat load of the first air conditioner 17 without cooling.

Next, when heating or cooling by the second air conditioner 20 is performed again, the heat storage material L is injected from the supply port 32 </ b> A of the heat storage material supply pipe 32 with the on-off valve 34 being closed.
The heat storage material L injected from the supply port 32 </ b> A is accommodated in the heat storage material container 31 through the heat storage material supply pipe 32.
Then, during the charging of the battery, the heat storage material L is converted into a heat radiation source or a heat absorption source using the power of the external power source, and heat exchange between the heat storage material L and the vehicle compartment 11 is performed, and a new heat storage material L Heating or cooling can be achieved by using a heat radiation source or heat absorption source.

The second embodiment has substantially the same effects as the effects (1) and (4) of the first embodiment.
Further, when the first air conditioner 17 is heating or cooling the passenger compartment 11, the heat storage material L is prevented from being heated or cooled by the first air conditioner 17, and the heat storage material L is transferred from the heat storage material container 31 to the heat storage material. Since the exhaust pipe 33 leads to the outside S of the vehicle, the vehicle weight is reduced. The fuel consumption of the vehicle 10 is improved by reducing the vehicle weight.

(Third embodiment)
Next, a third embodiment will be described.
In the air conditioning system according to the third embodiment, the second heat storage material container is not installed in the second air conditioner, and the heat storage material container can reciprocate between the vehicle interior and the exterior of the vehicle interior. Different from form.
FIG. 6 shows an air conditioning system according to the second embodiment. Among the components, the same elements as those of the air conditioning system of the first embodiment are denoted by the same reference numerals with the aid of the description of the first embodiment. .

As shown in FIG. 6, the second air conditioner 40 of the third embodiment includes a heat storage material container 41 as a heat storage material container provided in the passenger compartment 11, and the heat storage material L is inside the heat storage material container 41. Sealed.
A container housing space 42 is formed below the heat storage material container 41 provided in the vehicle interior 11, and the container housing space 42 is a space existing outside the vehicle interior 11.
The heat storage material container 41 is moved up and down between the container housing space 42 and the installation position in the passenger compartment 11 by an elevating device 43 that is controlled by a controller 27 (not shown in FIG. 6).
In the state where the heat storage material container 41 is located in the vehicle interior 11, the heat storage material L is in a state where heat can be exchanged with respect to the space inside the vehicle interior 11, and in the state where the heat storage material container 41 is located in the container accommodation space 42 It exists in the state which prevents the heat exchange with the thermal storage material L and the thermal storage material container 41, and the vehicle interior 11. FIG.
Therefore, the switching means in the third embodiment includes an elevating device 43 as a transfer means.

Based on the relationship between the temperature outside the vehicle S and the heat storage material L, the controller 27 determines whether or not the heat storage material container 41 needs to be moved to the container housing space 42 outside the vehicle compartment 11.
The procedure for moving the heat storage material container 41 from the vehicle interior 11 to the container housing space 42 is substantially the same as the procedure shown in the flowchart of FIG. 3. In this embodiment, “derivation” is “movement of the heat storage material container to the accommodation space”.

In this embodiment, the heat storage material container 41 installed in the vehicle interior 11 is placed in a state where the heat storage material L hinders heating or cooling during the heating or cooling of the vehicle interior 11 by the first air conditioner 17. It is lowered by the elevating device 43 and accommodated in the container accommodating space 42 outside the passenger compartment 11.
By storing the heat storage material container 41 from the vehicle interior 11 to the container storage space 42 outside the vehicle interior 11, the heat storage material L is led out from the vehicle interior 11, and the heat storage material L, the heat storage material container 41, and the vehicle interior 11. It is in a state where heat exchange with is prevented.
In this embodiment, the heat storage material L that has lost the heating capacity or the cooling capacity is discharged together with the heat storage material container 41 to the outside of the vehicle compartment 11 to warm or cool the heat storage material L that has lost the heating capacity or the cooling capacity. Without increasing the heat load of the first air conditioner 17.

Next, when heating or cooling by the second air conditioner 20 is performed again, the heat storage material container 41 housed in the container housing space 42 outside the vehicle compartment 11 is raised by the elevating device 43 to move into the vehicle compartment 11. Move to the installation position.
And in the state in which the heat storage material container 41 was installed in the installation position in the vehicle interior 11, the heat storage material L is turned into a heat radiation source or a heat absorption source using the power of the external power source during charging of the battery.
By the heat storage material L becoming a heat radiation source or a heat absorption source, the second air conditioner 20 can perform the next heating or cooling.

The third embodiment has the operational effects substantially equivalent to the operational effects (1), (4), and (6) of the first embodiment.
In addition, when the first air conditioner 17 is heating or cooling the vehicle compartment 11, the heat storage material L and the heat storage material container 41 are in the vehicle compartment in a state where the heat storage material L hinders heating or cooling by the first air conditioner 17. 11 is accommodated in the container accommodating space 42 outside the vehicle compartment 11.
As a result, when the first air conditioner 17 is heated or cooled, an increase in the heat load of the first air conditioner 17 due to the heat storage material container 41 in addition to the heat storage material L can be avoided.

In addition, the air conditioning system according to the first to third embodiments described above shows an embodiment of the present invention, and the present invention is not limited to the above embodiment, and is as follows. Various modifications are possible within the scope of the invention.
In the first to third embodiments, the controller as the control means determines the necessity of derivation of the heat storage material (or heat storage material container) out of the passenger compartment based on the procedure shown in FIG. The necessity of derivation | leading-out of a thermal storage material out of a vehicle interior based on the procedure shown by the flowchart of 7 may be determined. In FIG. 7, the air conditioning mode of the first air conditioner is determined in step S11. If it is the cooling mode, the process proceeds to step S12. If it is heating, the process proceeds to step S14. In other modes such as the ventilation mode and the OFF mode, the process proceeds to step S11. Loop. In step S12, it is determined whether or not the temperature of the heat storage material exceeds the set temperature on the high temperature side, and when the temperature of the heat storage material exceeds the set temperature on the high temperature side, the heat storage material is derived to the outside of the vehicle. Proceed to When the temperature of the heat storage material does not exceed the set temperature on the high temperature side in step S12, the process returns to step S11. In step S14, it is determined whether or not the temperature of the heat storage material exceeds the set temperature on the low temperature side (below the set temperature), and if the temperature of the heat storage material is less than the set temperature, the heat storage material is led out of the vehicle. Proceed to step S13. When the temperature of the heat storage material does not exceed the set temperature on the low temperature side (not less than the set temperature) in step S14, the process returns to step S1. It should be noted that the set temperature in steps S12 and S14 may be 20 ° C. as in the flow of FIG.
In 1st-3rd embodiment, although it was set as the structure which derives | emits the thermal storage material or the thermal storage material container which accommodated the thermal storage material outside the vehicle, for example, as shown in FIG. 8, the thermal storage material container 51 with which the air conditioner 50 is provided. An openable / closable heat insulating cover 52 having a heat insulating property may be provided so as to cover the surroundings. The heat insulating cover 52 is a cover that can be switched between a state in which the space between the heat storage material container 51 and the vehicle compartment 11 is blocked and a state in which the heat storage material container 51 is exposed to the vehicle interior 11. When heating or cooling by the second air conditioner 50, the heat insulating cover 52 does not cover the heat storage material container 51 so that heat exchange between the heat storage material container 51 and the vehicle compartment 11 can be performed. In addition, when the first air conditioner 17 heats or cools the vehicle compartment 11, the heat storage material L is installed in the vehicle compartment 11 in a state where the heat storage material L hinders heating or cooling by the first air conditioner 17. The container 51 is covered with a heat insulating cover 52. Thereby, it is set as the state which prevents the heat exchange with the compartment 11 and the thermal storage material L and the thermal storage material container 51, without deriving the thermal storage material L or the thermal storage material container 51 which accommodated the thermal storage material L out of the compartment 11. Can do. The heat insulating cover 52 may be opened and closed automatically by the controller 27 or manually.
In the first to third embodiments, an air conditioner having a vapor compression refrigeration cycle is used as the first air conditioner, but the first air conditioner is not limited to this type of air conditioner. As the first air conditioner, for example, an air conditioner using a heat storage material similar to that of the second air conditioner may be used, and the type and form of the first air conditioner are not limited.
In the first to third embodiments, the air conditioning system mounted on the PHEV as a moving body has been described. However, the moving body may be an aircraft or a ship. When the moving body is an automobile, the present invention can also be applied to an air conditioner for a hybrid vehicle (referred to as “HEV”) excluding PHEV and an automobile equipped with only an internal combustion engine (expressed as “engine vehicle”). It is.
○ In the first to third embodiments, there is one heat storage material container provided in the vehicle interior, but the number of heat storage material containers in the vehicle interior and the installation position of the heat storage material container in the vehicle interior are not particularly limited, For example, a plurality of heat storage material containers may be installed in the passenger compartment. In this case, when the first embodiment is applied, a heat storage material container outside the vehicle compartment corresponding to the number of heat storage material containers in the vehicle interior may be installed, or one common heat storage material container may be installed outside the vehicle cabin. Also good. Moreover, when applying 3rd Embodiment, it is necessary to provide the container accommodation space corresponding to the number of the thermal storage material containers in a vehicle interior.
○ In the first to third embodiments, water is used as the heat storage material, but in the first and third embodiments, the heat storage material is accommodated in the closed space and is not discharged to the outside of the vehicle. It's okay. For example, a heat storage material suitable for cooling during summer may be used, or a heat storage material suitable for heating during winter may be used.
In the first to third embodiments, the controller that is the control unit is provided separately from the ECU that controls the first air conditioner. However, the controller and the ECU are provided separately. Absent. For example, it is good also as a structure which adds the function of a control means to ECU, and uses ECU which controls a 1st air conditioner as a control means.
○ In the first to third embodiments, the heat storage material container is simply accommodated in the vehicle interior. For example, the inside of the heat storage material container is divided into a plurality of storage units, and the heat storage material is stored in each storage unit. Or you may accommodate the thermal storage material accommodated in the several small container in the thermal storage material container. In this case, the partitioned storage unit unit or small container unit heat storage material may be led out from the vehicle interior to the vehicle interior. In this case, if the heat storage material is in a state that hinders heating or cooling by the first air conditioner in units of storage units or small containers, only the heat storage material of the storage unit or small container that hinders heating or cooling is derived. Thus, a heat storage material that can be used for heating or cooling can be effectively used.
○ In the first embodiment, the heat storage material of the second heat storage material container can be simply returned to the first heat storage material container in the vehicle interior, but a heat exchange section is provided in the pipe forming the heat storage material passage. When the heat storage material is returned to the first heat storage material container, heat exchange with another heat medium may be performed in the heat exchange unit, and the heat storage material after the heat exchange may be returned to the first heat storage material container. In this case, even when the heat storage material is returning to the first heat storage material container, heating or cooling by the heat storage material in the first heat storage material container is possible.
○ In the first embodiment, the pump is used as means for returning the heat storage material led to the second heat storage material container to the first heat storage material container, but the heat storage material is transferred from the second heat storage material container to the first heat storage material container. The returning means is not limited to the pump. For example, the second heat storage material container may be moved up and down, and when it is desired to return the heat storage material to the first heat storage material container, the second heat storage material container is raised so as to be higher than the first heat storage material container. The thermal storage material can be returned to the first thermal storage material container using the potential energy. In this case, it is preferable to use a flexible hose for the piping.
○ In the third embodiment, the heat storage material container is accommodated by the lifting device from the vehicle interior to the container housing space outside the vehicle interior, but the direction of reciprocation between the container housing space of the heat storage material container and the vehicle interior is as follows: It is not limited to the vertical direction. The direction of reciprocation between the container storage space of the heat storage material container and the vehicle interior is defined by the positional relationship between the position where the container storage space is provided and the vehicle interior, and reciprocating means for reciprocating the heat storage material container is provided. You can do it.
In the third embodiment, the heat storage material container is accommodated by the lifting device from the vehicle interior to the container housing space outside the vehicle interior. However, the heat storage material container installed in the vehicle interior is detachable, and the heat accumulator is the first. In a state that hinders heating or cooling by one air conditioner, the passenger may house the heat storage material container from the vehicle interior to the vehicle exterior. In this case, it is not necessary to provide a container housing space, and an increase in heat load due to the heat storage material container in addition to the heat storage body can be avoided during heating or cooling of the first air conditioner.
In the first embodiment, air conditioning by the second air conditioner 17 may be stopped when the passenger leaves the vehicle 10.

DESCRIPTION OF SYMBOLS 10 Vehicle 11 Car interior 16 Engine room 17 1st air conditioner 18 Blowing duct 19 Suction duct 20, 30, 40 2nd air conditioner 21 1st heat storage material container 22 2nd heat storage material container 23 Piping 24, 34 On-off valve 25 Pump 27 Controller 28 First temperature sensor 29 Second temperature sensor 31, 41 Thermal storage material container 33 Thermal storage material discharge pipe 42 Container housing space L Thermal storage material S Outside the vehicle

Claims (6)

A first air conditioner that heats or cools the room provided in the moving body;
A second air conditioner that heats or cools the room by heat exchange with a heat storage material, and an air conditioning system for a moving body,
The heat storage material is installed in the room,
A moving body comprising switching means for switching between a state where heat exchange is performed between the heat storage material and the indoor space and a state where heat exchange between the heat storage material and the indoor space is prevented. Air conditioning system. A heat storage material container for storing the heat storage material;
The switching means is
One end is connected to the heat storage material container, and the other end is disposed outside the heat storage material passage,
The mobile air conditioning system according to claim 1, further comprising an on-off valve that opens and closes the heat storage material passage.   The mobile air conditioning system according to claim 2, further comprising an external heat storage material container connected to the other end of the heat storage material passage and provided outside the room. Control means for controlling the on-off valve;
The control means includes
4. The mobile air conditioning system according to claim 2, wherein when the temperature of the heat storage material accommodated in the heat storage material container exceeds a predetermined temperature, the opening / closing means is opened. 5. A heat storage material container for storing the heat storage material;
The switching means is
The moving body air-conditioning system according to claim 1, further comprising transfer means for transferring the heat storage material container from the room to the outside. A heat storage material container for storing the heat storage material;
The switching means is
The movement according to claim 1, further comprising a heat insulating cover that can be switched between a state in which the heat storage material container and the indoor space are blocked and a state in which the heat storage material container is exposed to the indoor space. Body air conditioning system.