JPH1172242A - Storage type air conditioner - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To set an optimal installation location in terms of temperature environment when a storage battery is mounted on a power storage type air conditioner. A compressor motor is charged during off-peak hours of nighttime power demand and discharged during peak hours of daytime power demand.
For an air conditioner equipped with a storage battery (11) that drives (M1), the storage battery (11) is fixed to the bottom inside the casing (60) of the indoor unit (1B) with a fixing bracket (63), and the storage battery (1
1) Keep the ambient temperature around the room at a high temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power storage type air conditioner provided with a storage battery, and more particularly to an improvement in a storage battery installation location.

[0002]

2. Description of the Related Art Conventionally, air conditioners have been disclosed in
As disclosed in JP-A-305244, there is one provided with a storage battery. This type of power storage type air conditioner
An outdoor unit and an indoor unit are configured to be connected to a power supply line connected to a commercial power supply, and the outdoor unit is provided with a compressor motor, an outdoor fan motor, and the like. The compressor motor is connected to a main power supply line via a power conversion circuit having a converter section and an inverter section, while the storage battery is charged to a DC section which is an intermediate circuit between the converter section and the inverter section. It is connected via a discharge circuit.

When the power supply voltage of the power supply line drops, the power storage type air conditioner discharges the storage battery to reduce the power supply voltage.
The next electric power is supplied to the compressor motor so as to compensate for the undervoltage, so that the smooth air-conditioning operation can be continued. In particular,
The storage battery is charged by using nighttime power with low power demand, and the power of the storage battery is supplied to the inverter unit at the peak of daytime power demand to drive the compressor motor.

[0004]

By the way, in such a power storage type air conditioner, it is required to reduce the power demand by using the power stored at night in the daytime as efficiently as possible. In order to reduce the power demand, a large storage battery may be employed. However, this requires a large installation space for the storage battery, and also increases the cost of the storage battery.

For this reason, it is required to secure a large amount of power that can be used during the day while using a storage battery as small as possible. Generally, the discharge performance of this type of storage battery depends on the environmental temperature. In other words, the discharge performance decreases as the environmental temperature decreases, and particularly when the environmental temperature decreases to around the outside air temperature (eg, 5 ° C.) in winter, the discharge performance decreases extremely.

For this reason, in this type of air conditioner, it is necessary to particularly consider the environmental temperature as a location where the storage battery is installed. Even if the storage location of the storage battery is appropriately set, the power demand is small. It is important to make this type of air conditioner practical to exhibit a discharge performance high enough to cope with peak times.

The present invention has been made in view of this point, and is to set an optimum installation location in terms of the temperature environment when a storage battery is mounted on an air conditioner.

[0008]

[Means for Solving the Problems]

-Summary of the invention-The present invention, the storage position of the storage battery of the power storage type air conditioner,
Under a relatively high temperature environment, a large discharge performance of the storage battery can be secured.

Means for Solving the Problem Specifically, as shown in FIG. 1 and FIG. 4, the means taken by the invention according to claim 1 is a power supply (21) for supplying electric power for driving a load (M1). And a power storage means (BM) capable of discharging power for supplying power to the load (M1) while charging the power supplied from the power supply (21), wherein the power supply (21) or the power storage means It is premised on a power storage type air conditioner that drives the load (M1) with electric power from the (BM) to perform air conditioning in the air conditioning room (A). The power storage means (BM) is installed in the indoor space.

According to this specific matter, the power storage means (BM) can be installed at a position where the environmental temperature is relatively high, and the discharge performance can be improved. That is, sufficient capacity is exhibited without increasing the size of the storage battery.

According to a second aspect of the present invention, in the power storage type air conditioner of the first aspect, the power storage means (BM) is installed inside the air conditioning room (A).

According to a third aspect of the present invention, there is provided a storage-type air conditioner according to the second aspect, wherein:
(A) Indoor unit (1B) inside, outdoor unit (1A) outside
Are installed, and air conditioning in the air conditioning room (A) is performed by a refrigerant circulation operation between the two units (1A, 1B). The power storage means (BM) is housed inside the casing (60) of the indoor unit (1B).

According to a fourth aspect of the present invention, in the power storage type air conditioner according to the third aspect, the power storage means (BM) is fixed to a bottom portion in the casing (60) of the indoor unit (1B). This is the configuration.

According to these specific items, the power storage means (BM) can always be installed in an environment of about room temperature, and the discharge performance of the storage battery can be maintained high with a relatively simple configuration. In particular, in the invention according to claim 4,
In general, a heavy storage unit (BM) is used for the indoor unit (1B).
By installing the indoor unit (1B) at the bottom of the room, the stability of the installation state of the indoor unit (1B) can be secured.

According to a fifth aspect of the present invention, there is provided a storage-type air conditioner according to the first aspect, wherein:
(A) inside unit (1B) and outside (C) outside unit (1)
A) is installed, and air conditioning in the air conditioning room (A) is performed by the refrigerant circulation operation between both units (1A, 1B). In addition, the power storage means (BM) is installed separately from the indoor unit (1B) and connected so as to be able to supply power to the indoor unit (1B).

According to this specific matter, by arranging the power storage means (BM) separately from the indoor unit (1B), the degree of freedom of the installation position of the power storage means (BM) is improved, and effective use of empty space can be achieved. .

According to a sixth aspect of the present invention, in the power storage type air conditioner of the fifth aspect, the indoor unit (1B) is disposed above the power storage means (BM).

According to a seventh aspect of the present invention, in the power storage type air conditioner according to the sixth aspect, the power storage unit (BM) is housed in a box-shaped power storage unit casing (72). (73), and the indoor unit (1B) is mounted on the upper surface of the power storage unit casing (72).

According to these specific items, the indoor unit (1
B) and the storage means (BM) can be installed in a common installation space, and a separate ground plane is not required for installing both.

The invention according to claim 8 includes a power supply (21) for supplying electric power for driving the compressor,
While charging the power supplied from (21), the storage means (BM) capable of discharging for supplying power to the compressor is connected to a compressor, a condenser, an expansion mechanism, and an evaporator by a refrigerant pipe. And a refrigerant circulation circuit, and the compressor is driven by electric power from the power supply (21) or the power storage means (BM),
After the refrigerant discharged from the compressor and condensed in the condenser is decompressed by the expansion mechanism, the storage type air conditioner performs air conditioning in the air conditioning room (A) by the refrigerant circulation operation of evaporating in the evaporator. . Then, the power storage means (BM) is arranged on the downstream side of the condenser in the air flow.

According to a ninth aspect of the present invention, in the power storage type air conditioner according to the eighth aspect, the condenser is an outdoor heat exchanger disposed outside the room, and the evaporator is an air conditioning room.
It is an indoor heat exchanger located in (A). Further, the air conditioning room is cooled by the refrigerant evaporated in the indoor heat exchanger by the refrigerant circulation operation.

According to these specific items, it is possible to effectively use the heat of condensation of the refrigerant to set the environmental temperature around the power storage means (BM) high and improve its performance. In particular, the invention according to claim 9 is a case where the present invention is applied to a cooling only machine, and the electric storage means (BM) can be installed in a high temperature environment by the heat of the outside air and the heat of condensation of the refrigerant.

According to a tenth aspect of the present invention, in the power storage type air conditioner according to any one of the first to ninth aspects, the power storage means (BM) is connected to the power supply (21) when the power demand is off-peak. ), And discharges power at the peak of power demand to supply power to the load (M1).

In the apparatus provided with such a power storage means (BM), it is necessary to increase the power storage capacity in order to secure a sufficient discharge amount at the peak of the power demand, and accordingly, the storage battery itself is required. Although a large battery has been required, the configuration of each of the above-described claims makes it possible to increase the discharge amount while using a small storage battery.

[0025]

Embodiment 1 Hereinafter, Embodiment 1 of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, a storage type air conditioner (10) according to the present embodiment has one outdoor unit (1A).
To a single indoor unit (1B), which is provided with a storage battery (11) for supplying secondary power.

The outdoor unit (1A) is of a package type, and although not shown, is provided with an outdoor refrigerant circuit comprising a compressor, a four-way switching valve, an expansion valve, and an outdoor heat exchanger. On the other hand, although not shown, the indoor unit (1B) is provided with an indoor-side refrigerant circuit provided with an indoor heat exchanger. The refrigerant circuit is configured as a reversible circuit in the refrigerant circulation direction so as to perform a cooling operation and a heating operation.

The outdoor unit (1A) is connected to a power supply line (20) so as to be supplied with commercial power, and the power supply line (20) is connected from a commercial power supply (21) to a breaker (22) and a power detector. (23) are connected in order. The commercial power supply (2
1) supplies three-phase AC commercial power as primary power, while the power detector (23) detects the amount of input power from the commercial power supply (21).

The outdoor unit (1A) includes a main power supply line (30) connected to a power supply line (20). The main power supply line (30) has an electromagnetic relay (31) as a main contact and a power supply. The conversion circuit (32) and the compressor motor (M1) are connected in order. The power conversion circuit (32) includes a converter (33)
And an inverter unit (34) provided after the converter unit (33). The converter section (33) is a conversion circuit that converts AC commercial power into DC power and outputs the DC power, and includes a rectifier circuit (35) and a smoothing circuit (36).
And The rectifier circuit (35) includes a diode module having a diode, while the smoothing circuit (36) includes a capacitor for smoothing a DC voltage.

The inverter section (34) is a conversion circuit that converts DC power output from the converter section (33) into predetermined AC control power and supplies the AC control power to the compressor motor (M1).
For example, a pulse width modulation method is adopted, and an IGBT (Insu
It consists of a transistor module equipped with a switching element such as a late gate bipolar transistor.

The compressor motor (M1) is a load for driving the compressor by receiving the control power output from the inverter section (34). The load of the compressor motor (M1) is controlled to adjust the capacity of the compressor. Is configured.

The storage battery (11) is a feature of the present invention and is housed in the indoor unit (1B) and constitutes a secondary power supply for supplying secondary power to the compressor motor (M1). I have. The storage battery (11) is connected to a main power supply line (30) via a charging / discharging circuit (40), and the storage battery (11) and the charging / discharging circuit (40) constitute a power storage means (BM). The discharge circuit (40) consists of a buck-boost chopper (41) and a DC switch (42)
And are connected in order.

One end of the step-up / step-down chopper (41) is connected between the rectifier circuit (35) and the smoothing circuit (36), and the DC power of the power conversion circuit (32) is charged when the storage battery (11) is charged. It is configured to step down to DC power suitable for charging of (11), while boosting to DC power suitable for driving the compressor motor (M1) when the storage battery (11) is discharged.

The DC switch (42) is formed of, for example, a thyristor, and is turned on when the storage battery (11) is charged and discharged.

On the other hand, a DC converter (1) is provided between the rectifier circuit (35) and the smoothing circuit (36) on the main power supply line (30).
2) The outdoor control circuit (50) is connected via
The air conditioning control circuit (13) provided in the indoor unit (1B) is connected. The outdoor control circuit (50) is provided with an outdoor controller (51) as shown in FIG.
The outdoor fan motor (M2) is connected to supply driving power for driving the outdoor fan motor (M2). Further, the outdoor control circuit (50) is connected to a valve motor (M3) of an expansion valve for controlling the amount of circulating refrigerant, and controls the valve opening of the expansion valve.

Although not shown, the air conditioning control circuit (13) of the indoor unit (1B) is provided with an air conditioning controller, and is connected to an indoor fan motor (M4) and a flap motor (M5). M4) and the driving power for driving the flap motor (M5). Further, the air-conditioning control circuit (13) includes a remote controller (1
4) An operation signal and a set temperature signal are input from the power detector (23) and a detected power signal is input from the power detector (23) to control the number of revolutions of the indoor fan motor (M4), etc. ) Is configured to output a control signal. Although not shown, the air-conditioning control circuit (13) receives an indoor temperature signal output from a temperature sensor, while the outdoor control circuit (50) and the air-conditioning control circuit (13) do not. , And the control power supply is separately connected.

The outdoor controller (51) controls the compressor motor (M1) according to the power consumption of the compressor motor (M1).
1) The power is adjusted. The outdoor controller (51) sets the first judgment value L1 and the second judgment value L2 in advance, and sets the normal operation means (5a), the peak cut operation means (5b), and the peak shift operation means (5c). It has.

The first judgment value L1 and the second judgment value L2
Is a power value lower than the contract power LD, and the first determination value L1 is set to be smaller than the second determination value L2 as shown in FIG. Are set as the second judgment value L2 and the first judgment value L1.

The normal operation means (5a) determines whether the input power amount of the commercial power detected by the power detector (23) is equal to the first determination value L.
When it is smaller than 1, only the electromagnetic relay (31) is turned on, and only the commercial power is supplied to the compressor motor (M1) to execute the normal operation.

The peak cut operation means (5b) operates when the input electric energy is larger than the second judgment value L2 or the input electric energy is larger than the first judgment value L1 and smaller than the second judgment value L2. When the air-conditioning load is on the rise, only the DC switch (42) is turned on, the input of commercial power is cut off, and a peak cut operation is performed to supply secondary power from the storage battery (11) to the compressor motor (M1). I do.

The above-mentioned peak shift operation means (5c) determines that the input electric energy is larger than the first judgment value L1 and the second judgment value L2
If the air conditioner load is in a lower state or the air conditioner load is in a substantially constant state in a smaller state, the electromagnetic relay (31)
And the DC switch (42) are turned on to suppress the input electric power of the commercial power to a predetermined value or less and supply the commercial power to the compressor motor (M1), and simultaneously compress the secondary power from the storage battery (11). Executes the peak shift operation to be supplied to the machine motor (M1).

It should be noted that the air-conditioning load is raised and lowered by a remote controller (1
4) Judgment is made by changing the set temperature that is input. For example, in the cooling operation, when the set temperature is sequentially changed to the low temperature side in a short time, it is determined that the air conditioning load increases, and when the set temperature is sequentially changed to the high temperature side in a short time, the air conditioning load is reduced. It is determined that the temperature is falling, and when the set temperature is not changed for a predetermined time, it is determined that the temperature is constant. This air conditioning load may be determined based on the room temperature and the set temperature.

The rectifier circuit (35) regulates the input power of the commercial power in the peak shift operation means (5c).

-Installation Structure of Storage Battery-Next, the installation structure of the storage battery (11) inside the indoor unit (1B), which is a feature of the present embodiment, will be described. FIG. 4 is a front view in which a part of the indoor unit (1B) is cut away, and FIG. 5 is a perspective view showing the internal structure of the bottom of the indoor unit (1B).
(60) in FIG. 4 is the casing of the indoor unit (1B), (6)
Reference numeral 1) denotes an air inlet provided at the center of the front surface of the casing (60), and (62) denotes an air outlet provided at the upper front portion of the casing (60).

The storage battery (11) has a plurality (two in FIG. 4 and FIG. 5).
) Of storage batteries (11, 11) are connected by a connection cable (not shown) to form a unit. Each storage battery (11, 11) has the same size, and the depth dimension of these storage batteries (11, 11) in FIG.
It is set smaller than the depth dimension of the casing (60) of (1B). The width of these storage batteries (11, 11) in FIG. 5 is such that even if these storage batteries (11, 11) are installed adjacent to each other in the width direction as shown in FIG.
It is set so that it does not become larger than the width dimension of (60). That is, each storage battery (11, 11) is formed in a shape that fits inside the casing (60) of the indoor unit (1B).

Each of the storage batteries (11, 11) is fixed to the bottom plate (60a) of the casing (60) by a fixing bracket (63). The fixing bracket (63) is formed by bending a metal plate material into a substantially hat shape so as to conform to the shape of the storage battery (11, 11). Then, both ends of this fixing bracket (63) are attached to the casing (6
0) and is fastened to the bottom plate (60a) by means such as bolts. With this, the storage battery
(11, 11) is firmly fixed to the bottom plate (60a) of the casing (60).

As described above, in this embodiment, each storage battery (11, 1
By accommodating 1) in the casing (60) of the indoor unit (1B), the ambient temperature around each of the storage batteries (11, 11) is always maintained at about the indoor temperature. Actually, the indoor fan motor (M
Since the switch box (4) and the switch box (not shown) are accommodated, the ambient temperature around each storage battery (11, 11) is maintained at a temperature slightly higher than the room temperature due to heat generated from these.

-Air-conditioning control operation- Next, the air-conditioning control operation of the above-described power storage type air conditioner (10) will be described. First, the commercial power supply (21) is connected to the power line (20) by the three-phase AC commercial power. In the state in which is supplied, the normal operation control will be described.

When an operation signal is input from the remote controller (14), the operation signal is transferred to the outdoor control circuit (50) via the air conditioning control circuit (13), and the normal operation means (5a) of the outdoor controller (51) is operated. ) Turns on the electromagnetic relay (31). When the electromagnetic relay (31) is turned on, commercial power is input to the rectifier circuit (35) of the converter unit (33) and is converted into DC power, and is also smoothed by the smoothing circuit (36). Enter in (34). The inverter unit (34) converts DC power into predetermined AC control power and supplies the AC power to the compressor motor (M1), and the rotation speed of the compressor motor (M1) is set to a rotation command value corresponding to the air conditioning load. The on / off control of the switching element of the inverter section (34) is performed so that the rotation speed of the compressor motor (M1) is controlled.

The DC power of the converter section (33) is supplied to an outdoor control circuit (50) and an air conditioning control circuit (13) via a DC converter (12), and the outdoor control circuit (50) and the air conditioning control The circuit (13) supplies driving power to the outdoor fan motor (M2), the valve motor (M3), the indoor fan motor (M4), and the flap motor (M5) to perform the air conditioning operation.

At night, generally, an operation stop signal is input from the remote controller (14), and the storage battery (11) is charged while the air conditioning operation is stopped. That is,
The outdoor controller (51) turns on the electromagnetic relay (31) and turns on the DC switch (42), and the commercial power is converted to DC power by the rectifier circuit (35) of the converter (33), and the buck-boost chopper (41). The DC power is stepped down to a voltage suitable for charging the storage battery (11) by the step-up / step-down chopper (41), and the storage battery (11) is charged.

On the other hand, during the air-conditioning operation, the input electric energy of the commercial electric power is controlled by the outdoor controller (51). The outdoor controller (51) mainly reduces the power peak during the summer cooling operation. To control the amount of input power of commercial power. As the control of the input electric energy,
The input electric energy becomes larger than the second judgment value L2, or the input electric energy becomes larger than the first judgment value L1 and the second judgment value L
If the air conditioner load is in a state of increase when the air conditioner load is smaller than 2, the peak cut operation means (5b) turns on only the voltage converter (44), cuts off the input of the commercial power, and outputs the secondary power from the storage battery (11). Is performed to supply the pressure to the compressor motor (M1).

When the input electric energy is larger than the first judgment value L1 and smaller than the second judgment value L2 and the air-conditioning load is falling or almost constant, the peak shift occurs. The operating means (5c) is an electromagnetic relay (31)
And the voltage converter (44) are turned on, the input electric power of the commercial power is suppressed to a predetermined value or less, and the commercial power is
At the same time as supplying power to 1), a peak shift operation for supplying secondary power from the storage battery (11) to the compressor motor (M1) is executed.

By performing the air-conditioning operation as described above, daytime power demand can be reduced by effectively using nighttime power.

In this embodiment, as described above, 2
Storage batteries (11, 11) for supplying the next power are housed in the indoor unit (1B). For this reason, for example, even in winter, the environmental temperature around the storage batteries (11, 11) is always maintained at about the room temperature, and the storage batteries (11, 11) are exposed to a low-temperature environment and discharge performance is reduced. A situation in which the capacity is reduced and the ability is insufficient is avoided. Thereby, the storage battery (11)
It is possible to improve the practicality of the air-conditioning apparatus including: In addition, since the storage battery (11) is integrated with the indoor unit (1B), the work of installing the storage battery (11) at the time of installation of the air conditioning apparatus (10) is not required, thereby improving workability. .

In summer, since the outdoor temperature is higher than the indoor temperature, installing the storage battery (11) outdoors can increase the capacity of the battery. When applied to an air conditioner that can switch between different types of storage, considering the decline in capacity in winter when the storage battery (11) is installed outdoors, it is more stable to install the storage battery (11) throughout the year than in a room. Is advantageous.

Further, even when the present invention is applied to a cooling only machine, the storage batteries (11, 11) are housed in the indoor unit (1B), so that the workability at the time of installation is improved as described above. That is, it is possible to cope with the case where the installation space for the storage battery (11) cannot be secured outside the room.

[0058]

Second Embodiment FIG. 6 shows a second embodiment of the present invention. In the first embodiment described above, the storage batteries (11, 1
Although 1) was housed in the indoor unit (1B), in this embodiment, the storage battery (11) is installed independently of the indoor unit (1B). The indoor unit (1B) is provided with a connection terminal (not shown) for receiving power from the storage battery (11), and the connection terminal is connected to the storage battery (11) by a connection cable (64). .

As a specific arrangement structure, as shown in FIG. 6, a storage battery (11) is provided in a non-air-conditioned room such as a warehouse (B), which is a room separated from the air-conditioned room (A). Are installed, and the indoor unit (1B) and the storage battery (11) installed in the different rooms are connected by the connection cable (64).

According to this configuration, since the storage battery (11) is installed in a room where air conditioning is not performed (room where cooling is not performed), the storage battery (11) is installed in a room (warehouse) where the room temperature is particularly high in summer. Since the storage battery (11) can be arranged, the storage battery (11) can exhibit a higher discharge capability.

Further, in this embodiment, the installation position of the storage battery (11) can be set at an arbitrary position. In particular, if the long connection cable (64) is used, the storage battery (11) can be installed in the indoor unit.
It is also possible to install it at a position away from (1B). Therefore, the storage battery (11) can be installed in a higher temperature environment, and the storage battery (11) can be installed by effectively using the empty space of the room (warehouse), and the indoor unit ( A power storage type air conditioner can be realized without increasing the size of 1B).

Further, when the configuration of the present embodiment is applied to a so-called indoor multi-type air conditioner having a plurality of indoor units, the storage batteries connected to each of the indoor units are gathered at one place, and these are assembled. By installing as a storage battery unit, it becomes possible to install a plurality of storage batteries while effectively using an empty space.

When the present embodiment is applied to a cooling only machine, the storage battery (11) may be installed outdoors. In other words, by installing the storage battery (11) in a high temperature environment in summer, the storage battery (11) can exhibit higher performance, and can greatly contribute to reduction of daytime power demand in summer.

[0064]

Third Embodiment FIG. 7 shows a third embodiment of the present invention. In Embodiment 1 described above, the storage battery (11) is housed in the indoor unit (1B). However, in the present embodiment, the outdoor unit (1A) is used for an air conditioner dedicated to cooling.
Contains a storage battery (11).

Specifically, as shown in FIG. 7, the storage battery (11) is arranged downstream of the outdoor heat exchanger (condenser) (75) in the air flow. That is, during the cooling operation, the refrigerant is condensed in the outdoor heat exchanger (75), and performs heat exchange with the air to heat the air. The high-temperature air is blown to the storage battery (11) (see the arrow in FIG. 7). In FIG. 7, (76) is an air inlet of the outdoor unit (1A), (77) is an air outlet, and (78) is a blower.

According to the configuration of this embodiment, the capacity of the storage battery (11) can be improved by effectively setting the ambient temperature around the storage battery (11) by effectively utilizing the heat of condensation of the refrigerant, and the exhaust heat can be effectively used. be able to.

[0067]

Fourth Embodiment FIG. 8 shows a fourth embodiment of the present invention. In this embodiment, a plurality of storage batteries (11, 11,...) Are housed in a casing (72) to form a power storage unit (73), and an indoor unit (1B) is mounted on the power storage unit (73). It was done. Hereinafter, specifically, the power storage unit (7
3) and the arrangement structure of the indoor unit (1B) will be described.

As shown in FIG. 8, the storage batteries (11, 11,...) Are housed in a box-shaped power storage unit casing (72). This power storage unit casing (72) has legs (72a, 72
a), and is fixed to the floor by the legs (72a, 72a). The plan view shape of the power storage unit casing (72) substantially matches the plan view shape of the indoor unit (1B). Furthermore, on the upper surface of the power storage unit casing (72),
A mounting portion (72b, 72b) for mounting the indoor unit (1B) is protruded, and a guide plate is provided on each of the left and right side edges to prevent a displacement of the indoor unit (1B). (72c, 72c)
Is provided.

As shown by the broken line in FIG. 8, the storage batteries (11, 11,
.. Are accommodated to constitute the power storage unit (73).

Then, the power storage unit casing (72)
The indoor unit (1B) is placed on the upper surface of the
(72b, 72b) and a vibration isolator (not shown) are provided between the indoor unit (1B) and the indoor unit (1B) in this state.
The indoor unit (1B) is fixed on the power storage unit (73) by means such as fastening to the power storage unit (73). Also, the storage batteries (11, 11,...) In the power storage unit casing (72) and the indoor unit (1B) are connected so as to be able to supply power by a connection cable (not shown).

As described above, in this embodiment, the indoor unit (1B) is mounted on the upper part of the power storage unit (72) provided with the plurality of storage batteries (11, 11,...). In this way, the indoor unit (1B) itself can be reduced in size as compared with the case where the storage battery (11, 11, ...) is housed inside the indoor unit (1B), and the existing indoor unit (1b) can be used. Is possible. Also, since the installation part of the indoor unit (1B) and the installation part of the storage batteries (11, 11, ...) can be shared,
It is possible to obtain a highly practical installation state without requiring a large indoor installation space.

In this embodiment, the power storage unit casing
Since the relatively heavy indoor unit (1B) is mounted on (72), a configuration is adopted where the power storage unit casing (72) is reinforced as necessary. For example, power storage unit casing
A reinforcing member having a U-shaped cross section is welded to the inner surface of (72), and a closed cross section is formed between the reinforcing member and the inner surface of the power storage unit casing (72).

[0073]

Fifth Embodiment FIG. 9 shows a fifth embodiment of the present invention, in which the storage battery (11) of the first embodiment is charged via a power conversion circuit (32). Instead, the storage battery (11) is charged directly from the commercial power supply (21).

More specifically, the charging / discharging circuit (40) includes a charging line (4a) and a discharging line (4b), and the charging line (4a) has one end connected to the converter section in the main power supply line (30). It is connected to the stage preceding (33), the other end is connected to the storage battery (11), and an electromagnetic relay (43) and a converter circuit (44) are provided. The opening and closing of the electromagnetic relay (43) is controlled by an outdoor controller (51), and the storage battery (1) is opened.
It is configured to turn on when charging 1). The converter circuit (44) is composed of a diode module having a diode, and stores AC commercial power in a storage battery (11).
The conversion circuit converts the DC power into DC power suitable for charging and outputs the DC power.

On the other hand, one end of the discharge line (4b) is connected to the converter part (33) and the inverter part (3
4), the other end is connected to the storage battery (11), and a step-up chopper (45) and a DC switch (42) are provided. The step-up chopper (45) is configured to increase the DC power suitable for driving the compressor motor (M1) when the storage battery (11) is discharged. The DC switch (42) is configured by, for example, a thyristor,
The outdoor controller (51) is configured to be opened and closed by the outdoor controller (51) and to be turned on when the storage battery (11) is discharged.

The power conversion circuit (32) and the like are the same as in the first embodiment, but in FIG.
Only the outline of the connection configuration between the power conversion circuit (32) and the compressor motor (M1) is shown.

In the present embodiment, when the electromagnetic relay (43) is turned on at night or the like, commercial power is supplied from the commercial power supply (21) to the charging line (4a). This commercial power
The converter circuit (44) converts the DC power into DC power suitable for charging the storage battery (11), and charges the storage battery (11).

On the other hand, when performing the peak cut operation or the peak shift operation, when the DC switch (42) is turned on, the secondary power is supplied from the storage battery (11) to the boost chopper (45). This secondary power is boosted by the boost chopper (45) to DC power suitable for driving the compressor motor (M1),
This DC power is converted into AC power by the inverter (34) and supplied to the compressor motor (M1).

Therefore, according to this embodiment, similarly to the first embodiment, the compressor motor (M1) and the like are driven by the secondary power, so that the power peak of the commercial power can be reliably reduced. As a result, the use of electric power can be rationalized.

The charge line (4a) and the discharge line (4
b), the storage battery (11) can be charged even while the compressor motor (M1) is being driven,
The limitation of the charging time can be eliminated.

The load according to the present invention is a compressor motor (M
It is not limited to 1).

[0082]

As described above, according to the present invention, the following effects can be obtained. According to the first aspect of the present invention, the power storage means (B
M) is installed in the indoor space. Therefore, the power storage means (B
M) can be installed at a position where the environmental temperature is relatively high, the discharge performance can be maintained high, and the discharge amount can be increased. As a result, a sufficient amount of discharge can be obtained without increasing the size of the storage battery, and both miniaturization of the entire apparatus and improvement of discharge performance can be achieved.

According to the second aspect of the present invention, the power storage means (BM)
Is installed inside the air conditioning room (A). According to the third aspect of the invention, the power storage means (BM) is housed inside the casing (60) of the indoor unit (1B). Furthermore, in the invention according to claim 4, the power storage means (BM) is fixed to the bottom inside the casing (60) of the indoor unit (1B). For this reason, the power storage means (BM) can always be installed under the environment of about room temperature, and the discharge performance of the storage battery can be maintained at a high level with a relatively simple configuration, thereby improving the practicality of the device. be able to. In particular, according to the third aspect of the invention, since the power storage means (BM) is integrated with the indoor unit (1B), the work of installing the power storage means (BM) on site when installing the air conditioner is unnecessary. Workability is improved. According to the fourth aspect of the present invention, since the heavy power storage means (BM) is installed at the bottom of the indoor unit (1B), the indoor unit (1B) is installed on the power storage means (BM). Functions such as securing the stability of the state can be added.

According to the fifth aspect of the present invention, the power storage means (BM)
Is installed separately from the indoor unit (1B), and is connected to the indoor unit (1B) so that power can be supplied thereto. Therefore, the power storage means (BM) can be used without increasing the size of the indoor unit (1B).
Can be installed. Also, indoor unit (1B)
A place away from the power storage means (BM) can be used as a space where the power storage means (BM) can be installed, and the degree of freedom of the installation position of the power storage means (BM) can be improved.

According to the sixth aspect of the present invention, the indoor unit (1
B) is arranged above the storage means (BM). In the invention according to claim 7, the indoor unit (1B) is mounted on the upper surface of the power storage unit casing (72). For this reason, the indoor unit (1B) and the power storage means (BM) can be installed in a common installation space, and there is no need for a separate ground plane for installing both of them, and the space is used efficiently. be able to.

According to the eighth and ninth aspects of the present invention, the ambient temperature around the power storage means (BM) is set high by utilizing the heat of condensation. Thereby, the performance of the power storage means (BM) can be improved by effectively using the exhaust heat.

According to the tenth aspect, the power storage means (BM)
However, the power supplied from the power supply (21) is charged during off-peak of power demand, and the power is discharged to supply power to the load (M1) during peak of power demand. For this reason, a large storage battery was necessary in order to secure a sufficient amount of discharge at the peak of the power demand, but by adopting the configuration of each of the above-described claims, the discharge can be performed while using a small storage battery. The amount can be increased, and the power demand at the peak of the power demand can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram illustrating an electric system of a power storage type air conditioner according to a first embodiment.

FIG. 2 is a block diagram illustrating an outdoor control circuit.

FIG. 3 is a characteristic diagram showing a change in input power.

FIG. 4 is a front view of an indoor unit showing an installation configuration of a storage battery.

FIG. 5 is a perspective view of the bottom of the indoor unit showing the installation configuration of the storage battery.

FIG. 6 is a diagram illustrating an installation state of a storage battery according to a second embodiment.

FIG. 7 is a diagram illustrating an installation state of a storage battery according to a third embodiment.

FIG. 8 is a diagram illustrating an installation state of a storage battery according to a fourth embodiment.

FIG. 9 is a circuit block diagram schematically illustrating an electric system of a power storage type air conditioner according to a fifth embodiment.

[Explanation of symbols]

 10 Power storage air conditioner 21 Commercial power supply 60 Casing 72 Power storage unit casing 73 Power storage unit BM Power storage means M1 Compressor motor (load) 1A Outdoor unit 1B Indoor unit A Room (air conditioning room)

Claims (10)

[Claims] 1. A power supply (21) for supplying power for driving a load (M1), and a power supply for charging the power supplied from the power supply (21) while supplying power to the load (M1). Storage means (B
M), and driving the load (M1) with electric power from the power source (21) or the power storage means (BM) to perform air conditioning in the air conditioning room (A). (BM) is a storage type air conditioner characterized by being installed in the indoor space. 2. The storage type air conditioner according to claim 1, wherein the storage means (BM) is installed inside the air conditioning room (A). 3. The storage type air conditioner according to claim 2, wherein an indoor unit (1B) is installed in the air conditioning room (A), and an outdoor unit (1A) is installed outside the air conditioning room. Air conditioning in the air-conditioned room (A) is performed by the refrigerant circulation operation between the air-conditioning units (1B), and the power storage means (BM) is a casing (60) of the indoor unit (1B).
A power storage type air conditioner characterized by being housed inside. 4. The storage type air conditioner according to claim 3, wherein the storage means (BM) is a casing (60) of the indoor unit (1B).
An energy storage type air conditioner, wherein the air conditioner is fixed to a bottom of the inside. 5. The storage type air conditioner according to claim 1, wherein an indoor unit (1B) is installed in the air-conditioned room (A), and an outdoor unit (1A) is installed in the outdoor (C). (1A, 1B)
The air circulation in the air-conditioning room (A) is performed by the refrigerant circulation operation between the air-conditioning units (A). The power storage means (BM) is installed separately from the indoor unit (1B), and is connected to the indoor unit (1B). A power storage type air conditioner, which is connected so as to be able to supply power to the air conditioner. 6. The storage type air conditioner according to claim 5, wherein the indoor unit (1B) is disposed above the storage means (BM). 7. The storage type air conditioner according to claim 6, wherein the storage means (BM) is housed in a box-shaped storage unit casing (72) to form a storage unit (73), and the indoor unit (1B) ) Is a power storage type air conditioner characterized by being mounted on the upper surface of a power storage unit casing (72). 8. A power supply (21) for supplying electric power for driving the compressor, and discharging for supplying electric power to the compressor while charging the electric power supplied from the power supply (21) is possible. Power storage means (BM)
And a refrigerant circulation circuit in which a compressor, a condenser, an expansion mechanism, and an evaporator are connected by a refrigerant pipe, and the compressor is driven by electric power from the power supply (21) or the electric storage means (BM). In a power storage type air conditioner that air-conditions the air in the air-conditioned room (A) by a refrigerant circulation operation in which a refrigerant discharged from a compressor and condensed in a condenser is decompressed by an expansion mechanism and then evaporated in an evaporator, the power storage means ( BM) is a power storage type air conditioner, which is installed on the downstream side of the condenser in the air flow. 9. The storage type air conditioner according to claim 8, wherein the condenser is an outdoor heat exchanger disposed outside the room, and the evaporator is an indoor heat exchanger disposed inside the air conditioning room (A). A power storage type air conditioner characterized by cooling an air-conditioned room with a refrigerant evaporated in an indoor heat exchanger by a refrigerant circulation operation. 10. The power storage type air conditioner according to claim 1, wherein the power storage means (BM) charges power supplied from the power supply (21) during off-peak power demand, A power storage type air conditioner characterized by discharging electricity at the peak of power demand and supplying power to a load (M1).