JPH07260215A - Heat accumulation type air conditioner - Google Patents

Abstract

PURPOSE:To provide a heat accumulation type air conditioner capable of accumulating heat efficiently in the whole of heat accumulating agent upon heat accumulating operation and capable of effecting proper operation of a fan upon the heat accumulating operation as well as cooling and heating operation respectively. CONSTITUTION:In indoor air, which flows into a heat accumulating chamber 5 from a suction port 3 in room cooling and heating operation, the amount of air, which flows into a bypass passage 14 through an upper air hole 15 after passing through the heat accumulating chamber 5, and the amount of air, which flows into the bypass passage 14 from one end of the lower part of the bypass passage 14, can be controlled by an air mix damper 17. In this case, the heat exchanging amount of air, flowing into the bypass passage 14 from one end of lower part of the bypass passage 14, between heat accumulating agent A, is less than the amount of heat exchange of air, flowing into an air hole 15 through the heat accumulating chamber 5. Accordingly, the temperature of outlet air, produced by mixing both of the air, can be set artibrarily by the control of opening and closing of the air mix damper 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention cools or heats a heat storage agent in a heat storage chamber by using a time zone of low power consumption, and uses the heat stored in the heat storage agent as a cooling heat source or a heating heat source. The present invention relates to a heat storage type air conditioner.

[0002]

2. Description of the Related Art Conventionally, a heat storage type air conditioner of this type is known as shown in FIG.

This heat storage type air conditioner comprises a compressor 50,
It has a cooling circuit that is sequentially connected to the condenser 51, the expansion valve 52, and the brine heat exchanger 53, and transfers the refrigerant from the compressor 50 to the condenser 5
1 → Expansion valve 52 → Brine heat exchanger 53 → Compressor 50 are sequentially circulated (solid arrow). Further, it has a brine circuit in which the brine heat exchanger 53, the heat storage device 54, the air conditioning heat exchanger 55, and the pump 56 are sequentially connected, and the brine is pumped from the pump 56 → the brine heat exchanger 53 → the heat storage device 54 → the air conditioning heat. The exchanger 55 and the pump 56 are sequentially circulated (one-dot chain line arrow).

In this heat storage type air conditioner, when performing heat storage operation, both the cooling circuit and the brine circuit are operated. As a result, heat is exchanged between the refrigerant in the cooling circuit and the brine in the brine circuit in the brine heat exchanger 53,
The heat storage agent 54a having a low heat storage temperature in the heat storage device 54 is cooled and heat is stored (in this operation, the heat exchanger 55 for air conditioning is used).
The blower 55a is stopped. ). On the other hand, when performing the cooling operation, only the brine circuit is operated and the blower 55a is driven. As a result, the brine is cooled by the heat storage agent 54a in the heat storage device 54, the cooled brine is heat-exchanged by the air conditioning heat exchanger 55, and low-temperature air is blown into the room.

On the other hand, when performing the heating operation, the brine heat exchanger 53 is caused to function as a condenser, and the condenser 51 is replaced with an evaporator, while the heat storage agent 5 in the heat storage device 54 is replaced.
As 4a, one having a high heat storage temperature is used. With this configuration, when the refrigerant in this cooling circuit is made to flow backward, the heat storage agent 5
4a is heated and can be used as a heating heat source. Even when the cooling circuit constitutes a cooling circuit (a circuit in which the brine heat exchanger 53 functions as an evaporator), heating operation can be performed by adding a heating device to the brine circuit. .

[0006]

As described above, in the conventional heat storage type air conditioner, when the heat storage operation for cooling is performed, the brine is once cooled, and the heat storage agent 54a is cooled by the cooled brine. In addition, when the indoor cooling is performed, the brine is cooled by the heat storage agent 54a.

However, this heat storage type air conditioner has a problem that the cooling loss becomes large because all the operations indirectly perform cooling through the brine. In addition, this brine circuit increases the size of equipment such as a pump and the size of the entire apparatus, which is disadvantageous in terms of weight and installation space.

As described above, there are various problems during the heat storage operation, but there are also various problems during the cooling operation. That is, since the heat storage amount of the heat storage agent 54a gradually decreases with the elapse of the cooling operation time, the blowout temperature becomes extremely low at the beginning of the operation and becomes too cold, while the blowout temperature becomes high at the end of the operation and the cooling is performed. It has a problem that it becomes insufficient.

The cooling load changes with the temperature of the outside air. Generally, the load is small at around 8 to 9 pm during working hours, reaches its peak at around 14:00, and ends at 17 pm at the end of working hours. The load becomes smaller again around time. Therefore, it is necessary to change the cooling operation so as to correspond to the change of the cooling load, but the conventional heat storage type air conditioner has a problem that it cannot sufficiently cope with this.

While various problems of the conventional heat storage type air conditioner for cooling have been described above, the heat storage type air conditioner for heating also has the same problem.

That is, in the heating operation, excessive heating may occur at the beginning of working hours, heating may be insufficient at the end of working hours, and a heating load that changes in accordance with the outside air temperature may occur. However, there is a problem that it cannot fully cope with it.

In view of the above-mentioned conventional problems, an object of the present invention is to efficiently store heat in the entire heat storage agent during heat storage operation, and to prevent excessive cooling and heating and insufficient cooling and heating during cooling and heating operation.
An object of the present invention is to provide a light-weight and compact heat storage type air conditioner that can handle indoor heating and cooling loads.

[0013]

In order to achieve the above-mentioned object, the invention of claim 1 stores a heat storage agent in a heat storage chamber and closes a lower suction port and an upper discharge port during heat storage. Then, the inside air is circulated to cool the heat storage agent with a cooling device or the heating device with a heating device, while at the time of cooling and heating, the suction port and the blowout port are opened to suck indoor air into the chamber to exchange heat with the heat storage agent. In a heat storage type air conditioner that blows out to a heat storage chamber that stores the heat storage agent in the heat storage chamber, one end faces from the lower part of the heat storage chamber to the suction port, and the other end is the discharge port and an upper part of the heat storage chamber. A bypass passage that faces the opening, an air hole that communicates the heat storage chamber and the bypass passage near the upper part of the heat storage chamber, and the bypass between the air hole portion and the upper opening portion of the heat storage chamber. Installed in the aisle of the inside air A blower for performing suction and blowing of circulation and the outside-compartment air, characterized by providing an air mixing damper for opening and closing control such contradictory respectively flow area and flow area of the air hole of the bypass passage.

According to a second aspect of the present invention, in the heat storage type air conditioner according to the first aspect, a part of the air formed facing the bypass passage and cooled by the cooling device or heated by the heating device is provided. A duct that leads downward along the side wall of the heat storage chamber is provided, a blowout hole that communicates with the heat storage chamber is provided in the duct, and a partition wall that separates the heat storage chamber and the bypass passage is provided with the heat storage chamber and the bypass passage. It is characterized in that each of the suction holes communicates with each other.

The invention of claim 3 relates to claim 1 or claim 2.
In the heat storage type air conditioner according to the present invention, an intake temperature sensor for detecting the temperature of the intake air, an outlet temperature sensor for detecting the temperature of the outlet air, and an operation for calculating the temperature difference between the detected temperatures detected by the temperature sensors. Means and an opening degree control means for controlling the opening degree of the air mix damper based on the temperature difference.

The invention of claim 4 is claim 1 or claim 2.
In the heat storage type air conditioner according to the present invention, there is provided an opening degree control means for controlling the opening degree of the air mix damper in accordance with the operation time of cooling and heating.

The invention of claim 5 relates to claims 1 to 4.
In the heat storage type air conditioner according to the present invention, there is provided a blower control means for driving the blower at a high speed during the heat storage operation and driving the blower at a low speed during the cooling and heating operation.

The invention of claim 6 is the first to fifth aspects of the invention.
In the heat storage type air conditioner according to, the cooling device is
The refrigerant is composed of a refrigerant refrigerator that sequentially circulates the refrigerant to a compressor, a condenser, an expansion means, and an evaporator, and a drain tank that stores the drain water from the heat storage warehouse and the drain water is fed to the condenser side. And a sprinkler for sprinkling the drain water pumped up by the pump onto the condenser.

[0019]

According to the first aspect of the present invention, in the room air that flows into the heat storage chamber from the suction port during cooling and heating, the amount of air flowing through the heat storage chamber and through the upper air hole to the bypass passage,
The flow rate can be controlled by the air mix damper with respect to the amount of air flowing from one end of the lower portion of the bypass passage to the bypass passage.

Here, the air flowing from one end of the bypass passage to the bypass passage has a small amount of heat exchange with the heat storage agent, while the air flowing through the heat storage chamber to the air hole has a large amount of heat exchange with the heat storage agent. ing.

Therefore, the temperature of the blown air in which the two airs are mixed can be arbitrarily set by controlling the opening / closing of the air mix damper.

According to the second aspect of the present invention, a part of the air cooled by the cooling device or heated by the heating device is blown into the duct, and the air blown into the duct flows into the heat storage chamber through the blowout holes. , And then to the bypass passage through the suction hole.

Here, since the bypass passage and the duct are installed so as to face each other, the air passing through the duct crosses the heat storage chamber and flows into the bypass passage, and the passage distance of the heat storage chamber is shortened. The heat storage agent located in the lower part of the chamber is also efficiently cooled or heated.

According to the third aspect of the present invention, the air mix damper can be controlled based on the temperature difference between the temperature of the intake air and the temperature of the blown air, so that the temperature of the blown air can be controlled so as to have a predetermined temperature difference. It is possible to prevent large changes in room temperature.

According to the invention of claim 4, the blown air temperature can be controlled so as to correspond to the cooling and heating load during the working hours.

According to the invention of claim 5, the blower can be driven at a high speed during the heat storage operation, and the blower can be driven at a low speed during the cooling and heating operation, so that the cooling or heating of the heat storage agent can be completed in a short time, and it is quiet. It is possible to realize excellent cooling and heating operation.

According to the invention of claim 6, since the drain water in the heat storage is pumped up by the pump and sprayed to the condenser through the sprinkler, the heat exchange efficiency of the condenser is improved rather than simply exchanging heat with the indoor air. Moreover, drainage of drain water becomes unnecessary.

[0028]

1 to 15 show a first embodiment of a heat storage type air conditioner according to the present invention. In this embodiment, this heat storage type air conditioner for cooling is shown. here,
FIG. 1 is a front view of the heat storage type air conditioner, and FIG. 2 is a side sectional view of the heat storage type air conditioner.

The heat storage type air conditioner 1 has a vertically long box-shaped heat storage chamber 2 formed of a heat insulating wall. The heat storage chamber 2 has a front wall 2a having a suction port 3 at a lower portion and an outlet port at an upper portion. 4 are provided respectively, and the indoor air is taken into the heat storage chamber 2 through the suction port 3, and the taken-in air is blown back into the room through the blowing port 4.

A heat storage chamber 5 filled with a heat storage agent A is provided in the heat storage chamber 2. The heat storage agent A is obtained by injecting water (main component) containing a supercooling inhibitor into a hollow spherical resin body and has a low heat storage temperature. Also, this heat storage chamber 5
Then, a suction door 7 housed in a door box 6 is installed on the back side of the suction port 3, and the suction port 3 is opened and closed by the suction door 7.

An evaporator 8 of a refrigerating type refrigerator is installed above the heat storage chamber 5, and the heat storage agent A is cooled by this evaporator 8 to store heat in the heat storage agent A. In addition to the evaporator 8, this refrigerator has a compressor 9, a condenser 10, an expansion valve 11 and a condenser blower 12 installed on the upper surface wall 2b of the heat storage chamber 2 to cool the refrigerant to the compressor 9 → condenser 10 → expansion valve 11 →
The evaporator 8 and the compressor 9 are sequentially circulated and cooled by the heat of vaporization of the evaporator 8.

The heat storage chamber 5 and the upper wall 2 of the heat storage chamber 2
A bypass passage 14 is formed between the b and the back wall 2c via a partition wall 13. The lower end opening 14 a of the bypass passage 14 passes through the lower part of the heat storage chamber 5 and the suction port 3
And the upper end opening 14b communicates with the outlet 4. Here, the upper portion of the partition wall 13 has a mountain shape, and the mountain-shaped partition wall 13 has an upper opening 5a of the heat storage chamber 5 that connects the bypass passage 14 and the heat storage chamber 5 to the outlet 4 side.
An air hole 15 that connects the bypass passage 14 and the heat storage chamber 5 is also provided on the rear wall 2c side of the mountain-shaped partition wall 13. A blowout door 1 for selectively opening and closing the blowout port 4 and the upper opening 5a is provided on the upper end side of the bypass passage 14.
6 is installed, and an air mix damper 17 that opens and closes the air hole 15 is installed. A blower 18 is installed in the bypass passage 14 between the air hole 15 and the upper opening 5a to circulate cool air inside air shown by a solid arrow in FIG. 2 or indoor air circulating shown by a chain double-dashed arrow. I am trying. When performing this indoor air circulation,
Although drain water is generated in the heat storage chamber 5, this drain water is stored in the drain tank 19 installed below the lower surface wall 2d.

The general structure of the heat storage type air conditioner 1 according to this embodiment is as described above, and the structure of each part thereof will be described in more detail below.

First, the opening / closing structure of the intake door 7 and the outlet door 16 will be described with reference to FIGS. Here, FIG.
Is a perspective view of the suction door 7 and the blowing door 16, FIG. 4 is a front view of the suction door 7 and the blowing door 16, and FIG. 5 is a side view of the suction door 7 and the blowing door 16.

The suction door 7 has a horizontally long door body 70 that covers the suction port 3, and the door body 70 is supported by a bracket 72 and a rotary arm 73 on which a rotary shaft 71 is installed. The rotating arm 73 is provided on the door body 70 and the rotating shaft 7.
The door main body 70 is vertically rotated with the rotation of the rotary shaft 71.

On the other hand, the blow-out door 16 has a horizontally long door body 160 that covers the blow-out port 4, and is supported by a bracket 162 and a rotary arm 163 on which a rotary shaft 161 is installed, like the suction door 7. A reversible first motor 164 is installed on the bracket 162, and the output cam 164a of the first motor 164 has a cam 1 for switching.
65 and the rotary arm 166 are connected. A rotary roller 167 is rotatably fixed to the tip of the rotary arm 166, while an operating rod 168 having a substantially U-shaped cross section is provided on the rotary shaft 16.
1, the lower end is fixed, and this rotating roller 167 is
It is slidably fitted inside 68. As a result, the rotational force of the first motor 164 is transmitted to the rotary shaft 161 through the rotary arm 166, the rotary roller 167, and the operating rod 168, and the door body 160 fixed to the rotary shaft 161 is rotated. When the first motor 164 is driven, the cam 165 rotates accordingly, and the first micro switch 169 installed below the cam 165 is on / off controlled. The first micro switch 169 is the door body 160.
Is turned on when is closed or is in the maximum open state.

The suction door 7 and the blowout door 16 thus configured are connected to each other by a connecting member 20. The connecting member 20 is installed between the rotary arm 200 fixed to the rotary shaft 71 of the suction door 7, the fixed roller 201 fixed to the rotary shaft 161 of the outlet door 16, and the rotary arm 200 and the fixed roller 201. The guide roller 202 and the connecting wire 203 are formed. The upper end of the connecting wire 203 is connected to the fixed roller 201 and the lower end thereof is connected to the tip of the rotating arm 200, while the guide roller 202 guides the middle of the connecting wire 203. When rotating, this connecting wire 203
Through the rotary shaft 71 to rotate in the opening direction of the door 7,
On the contrary, when the outlet door 16 rotates in the closing direction,
The suction door 7 is adapted to rotate in the closing direction.

Next, the structure of the air mix damper 17 will be described with reference to FIGS. 6 is a front view of the air mix damper 17, FIG. 7 is a side sectional view of the air mix damper 17, and FIG. 8 is a plan view of the position detection plate.

The air mix damper 17 has a damper body 170 having a substantially V-shaped cross section, and its lower end is fixed to the rotary shaft 171, as shown in FIG.
It is axially supported by the partition wall 13 via 2. This rotating shaft 17
While the worm wheel 173a is fixed to 1, the worm wheel 173a is meshed with the worm 173b. The worm 173b is connected to the output shaft 174a of the reversible second motor 174, and the rotational force of the second motor 174 in the horizontal direction is converted into vertical rotation by the worm 173b and the worm wheel 173a. The main body 170 is rotated in the vertical direction.

The output shaft 1 is provided near the second motor 174.
A position detection plate 175 fixed to 74a and an air-mix damper control sensor, for example, a photo sensor 176 are installed, and as shown in FIG. 8, each point of the detection holes of the position detection plate 175 (A points at 90 ° equal intervals, B point). Point, C point, D point),
The rotation angle of the second motor 174 (open / closed state of the damper body 170) is detected. Here, when the second motor 174 rotates in the normal direction, that is, the photo sensor 176 moves from point A to point B to C.
When the point → D point → A point is sequentially detected, the air mix damper 17 is fully opened, and on the other hand, when it is reversed one by one, that is, the photosensor 176 is sequentially A point → D point → C point → B point → A point. When detected, the air mix damper 17 is set to be fully closed.

Further, the air mix damper 17 has a structure for detecting a closed state shown by a solid line in FIG. 7 and a maximum opened state shown by a two-dot chain line in FIG. This structure includes a plate-shaped cam 177 extending from the damper body 170, and a cam 1
A second microswitch 178 installed below 77,
An actuator 179 that links the cam 177 and the second micro switch 178 together, and a spring 179a that biases the actuator 179 in a direction in which the second micro switch 178 is turned on. Here, the damper body 170 is in a closed state (the air hole 15 is fully closed and the bypass passage 14 is fully open) and the maximum open state (the air hole 15 is fully opened and the bypass passage 14 is fully closed). At this time, the actuator 17 is pressed by the urging force of the spring 179a.
9 is set to turn on the second micro switch 178. A cushion 179b is provided on the periphery of the air hole 15 and the inner surface of the bypass passage 14 to maintain airtightness when the air mix damper 17 is opened and closed.

Next, the evaporation structure of drain water is shown in FIG. 9 and FIG.
This will be described with reference to 0. Here, FIG. 9 is a side cross-sectional view of the heat storage type air conditioner 1 which is partially omitted, and FIG. 10 is a schematic configuration diagram showing a water sprinkler.

In this drain water evaporation structure, a water sprinkler 21 is installed above the condenser 10 while a drain tank 19 is provided.
The drain water is pumped up by the pump 22 and supplied to the sprinkler device 21 through the water supply pipe 23. The drain water supplied to the water sprinkling device 21 is sprinkled on the condenser 10 and evaporated in the condenser 10, while the water that has not evaporated is collected in the tray 24 installed on the lower surface of the condenser 10 and further drained. The water is drained to the drain tank 19 through 25.

Here, the water sprinkling device 21 has a water sprinkling holder 211 connected to the upper end of the water supply pipe 23, and the water sprinkling pipe 2 having a water sprinkling hole 212a in the water sprinkling holder 211.
12 is slidably accommodated, and this sprinkling pipe 212
By reciprocally moving the condenser 10 on the condenser 10,
It is sprinkled all over.

Various known structures have been proposed as means for reciprocating the water sprinkling pipe 212. For example, the structure shown in FIG. 10 is adopted. That is, the movable rack 213 is fixed to the side surface of the water sprinkling pipe 212, and the fixed rack 214 is arranged at a portion facing the movable rack 213, and the gear 215 is meshed between the racks 213 and 214.
Further, the gear 215 is the crank 2 of the third motor 216.
The movable rack 213 is rotated by the 17 and the connecting rod 218.
The sprinkling pipe 212 fixed to the reciprocating part is reciprocated.

The heat storage type air conditioner 1 configured as described above performs a heat storage operation to store heat in the heat storage agent A and then performs a cooling operation. FIG. 11 is a block diagram showing a control circuit for each operation. is there.

That is, each operation is controlled by the CPU 26 having a microcomputer configuration.
Is a heat storage switch 27, a cooling switch 28, a drain water evaporation switch 29, micro switches 169 and 178, a temperature sensor 30 for detecting the temperature of the heat storage chamber 5, and a suction temperature for detecting the temperature of the air flowing in from the suction port 3. Each of the motors 164, 174, 216, the blower 18, the compressor 9, and the pump 22 is driven based on signals from the sensor 31, a blowout temperature sensor 32 that detects the temperature of the air blown from the blowout port 4, and a photo sensor 176. The drive is controlled via the circuits 33 to 38 as shown in the flowcharts of FIGS.

First, the heat storage operation will be described with reference to FIG. That is, after the working hours are over, the heat storage switch 27 is turned on (S1). At this time, the heat storage operation is not immediately started, and the operation is started after waiting from 23:00 to 7:00, that is, a time period when the electricity rate is discounted at midnight or a time period when the power consumption is low (S2). Here, when the operation is started, first, the first motor 164 is reversely driven (the suction door 7
And the closing door 16), and the second motor 174
Is driven in reverse (the air mix damper 17 causes the air hole 15
Closed) (S5, S6). Here, when the first and second micro switches 169 and 178 are turned on, that is, when the respective doors 7 and 16 and the air mix damper 17 are completely closed as shown by the solid line in FIG. The first and second motors 164 and 174 are stopped (S5 to S8).

In the closing operation of the intake door 7 and the outlet door 16, the first motor 164 rotates the outlet door 16 upward to close the outlet 4 as shown in FIG.
Inversely, the suction door 7 rotates downward via the connecting member 20 to close the suction port 3. Therefore, the downward rotating force of the suction door 7 is added to the upward rotating force of the outlet door 16 via the connecting member 20, and the first motor 1
The driving force of 64 is small.

When the doors 7 and 16 and the air mix damper 17 are closed, the compressor 9 is driven and the blower 18 is driven at high speed (S9). By this driving, as shown by the solid line arrow in FIG. 2, the air in the heat storage chamber 5 flows from the lower end opening 14a of the bypass passage 14 to the bypass passage 14, and further the upper end opening 14b of the bypass passage 14 is formed.
Enters the upper opening 5a of the heat storage chamber 5, passes through the evaporator 8, and cools the heat storage chamber 5.

With such internal circulation of cold air, the internal temperature T
When N is lower than the lower limit temperature TL of the internal cold storage temperature, the compressor 9 and the blower 18 are stopped, while when the internal temperature TN is higher than the upper limit temperature TH of the internal cold storage temperature, compression is performed. The machine 9 and the blower 18 are driven to
The heat storage agent A is cooled by the start / stop of 18 to store heat (S10).
~ 12). The start and stop of each of the devices 9 and 18 is repeated in the time zone from 23:00 to 7:00, and the heat storage switch 27 is turned off at the end of this time zone (S13, 14).

As described above, the heat storage operation is performed during the low-priced late night time period or the low power consumption time period. Further, as shown in step 9, since the blower 18 is driven at high speed, the cooling capacity of the evaporator 8 is improved, the temperature distribution in the heat storage chamber 5 is made uniform, and the coefficient of performance of the refrigerator is improved. However, the heat storage time of the entire heat storage agent A becomes shorter.

When such a heat storage operation is completed and the cooling operation shown in FIG. 13 is performed during working hours, the cooling switch 28
Is turned on (S1). As a result, the first motor 164 rotates in the forward direction to rotate the suction door 7 and the blowout door 16, and open the suction port 3 and the blowout port 4. Here, when the first micro switch 169 is turned off, that is, in FIGS.
When the doors 7 and 16 are fully opened as indicated by the two-dot chain line, the first motor 164 is stopped (S3, S4). Note that the upper opening 5a of the heat storage chamber 5 is closed by the blowout door 16 as the blowout door 16 is fully opened. Then
The second motor 174 is normally rotated, and the second micro switch 17
8 is turned on, that is, when the air hole 15 is fully opened and the bypass passage 14 is fully closed as shown by the chain double-dashed lines in FIGS. 2 and 5, the second motor 174 is stopped (S5 to S5).
7).

In this state, the blower 18 is driven at a low speed and continues for a predetermined time t (minutes) (S8, S).
9). At this time, as shown by the two-dot chain line arrow in FIG. 2, indoor air flows into the heat storage chamber 5 through the suction port 3 and exchanges heat with the heat storage agent A to be cooled. The cooled air flows into the bypass passage 14 through the air hole 15 and is blown out into the room from the blowout port 4.

By driving for t minutes, a stable suction temperature T1 is detected by the suction temperature sensor 31 and a blowing temperature T2 is detected by the blowing temperature sensor 30, and a temperature difference ΔT between these temperatures 30, 31 is calculated ( S10). Here, ΔT> 8 deg, 6 deg <ΔT ≦ 8 deg, 4
deg <ΔT ≦ 6 deg, 2 deg <ΔT ≦ 4 deg,
While determining which temperature difference band of 2 deg ≧ ΔT, the photo sensor 176 detects which of the points (A, B, C, D) of the position detection plate 175, the second motor 174 operates. The rotation angle is determined (S11 to S21).

Based on these determinations, the second motor 174 is drive-controlled in accordance with the settings in the table of FIG. For example, at the start of the cooling operation, when the air mix damper 17 is fully opened and the photo sensor 176 detects the point A as shown in FIG. 8 and the temperature difference ΔT is ΔT> 8 deg, that is, the indoor temperature is very high. When it is high, the damper main body 170 is fully opened without driving the second motor 174, and the suction port 3
The air that has flowed into the heat storage chamber 5 from is sufficiently cooled and blown out into the room from the outlet 4.

When the indoor temperature decreases due to the continuation of the cooling operation and the temperature difference ΔT becomes 6 deg <ΔT ≦ 8 deg, for example, the second motor 174 is rotated in the reverse direction (counterclockwise in FIG. 8) and the photo sensor When 176 detects light once (point D), the second motor 174 is stopped. This causes the damper body 170 to open the bypass passage 14 somewhat,
As shown by the two-dot chain line arrow in FIG. 2, part of the indoor air flowing into the heat storage chamber 5 from the suction port 3 exchanges heat with the heat storage agent A and is cooled and flows into the bypass passage 14 through the air hole 15. , The other air is the bottom opening 14 of the bypass passage 14.
The air flows from a into the bypass passage 14, and both airs are mixed and blown out from the outlet 4 into the room.

Here, since the air blown out from the blowout port 4 is mixed with the air flowing in from the lower end opening 14a of the bypass passage 14 (the air which has not sufficiently exchanged heat with the heat storage agent A), the blowout thereof is made. The temperature rises slightly.

As described above, when the suction temperature is sufficiently higher than the blowout temperature, air having a low blowout temperature is supplied to the room, and conversely, when there is not much difference from the blowout temperature, the blowout temperature is set to be slightly lower. Therefore, from the start of the cooling operation to the end of the cooling operation, as shown in FIG.
The value of T can be made constant, and thus stable indoor cooling can be performed.

In this cooling operation, the blower 18
Is driven at a low speed, the noise of the blower 18 is small,
Does not damage the indoor environment.

Further, during the cooling operation, the drain water from the heat storage chamber 5 is stored in the drain tank 19, and the drain water is evenly distributed to the condenser 10 by driving the pump 22 and the third motor 216 during the heat storage operation. Can be watered. Here, the moving speed of the water sprinkling pipe 212 of the water sprinkling device 21 may be 5 to 50 mm / sec, and 20 mm / sec is optimum for the evaporation efficiency. As a result, a large amount of evaporation can be obtained with a small flow rate, and the pump 22 can be downsized.
In addition, drain water is not required and the condenser 1
The heat dissipation effect of 0 is improved.

16 to 18 show a second embodiment of the heat storage type air conditioner according to the present invention, and this second embodiment shows another control example of the cooling operation. Here, FIG.
6 is a control flowchart according to the second embodiment, FIG. 17 is a table showing drive control of the second motor, and FIG. 18 is a graph showing an example of temperature change of the second embodiment.

That is, when the cooling switch 28 is turned on, the doors 7 and 16 are opened to fully open the intake port 3 and the outlet port 4 as in steps 1 to 4 of the first embodiment. The second motor is not driven and the air hole 15 is fully closed. In this state, the blower 18 is driven at a low speed (S5), the indoor air is guided from the suction port 3 to the lower opening 14a of the bypass passage 14, further circulated in the bypass passage 14, and blown out from the blowout port 4.

When this operation is started, the timer of the CPU 26 indicates that the operation start time is before 8 o'clock as shown in FIG.
8 to 10 o'clock, 10 o'clock to 11 o'clock, 11 o'clock to 12 o'clock, 12 o'clock to 15 o'clock, 15 o'clock to 16 o'clock
It is determined whether the time is before the time, or further from 16:00 to 17:00, and this cooling operation is continued for t minutes. Here, it is determined whether this operation continuation time is before 8 o'clock ......... from 16 o'clock to 17 o'clock, and the second motor 174 is drive-controlled as shown in FIG. 17 (S6 ...
S9).

For example, when the operation start time is before 8 o'clock, that is, when the working time is not reached, all the air flowing in from the suction port 3 flows into the lower end opening 14a of the bypass passage 14 to minimize the indoor cooling. Hold down. Then, as the outside air temperature rises and the indoor temperature rises from 8 o'clock to 10 o'clock, 10 o'clock to 11 o'clock, and 12 o'clock to 15 o'clock during working hours, the second motor 174 is normally rotated step by step to normalize the damper body 170. Is gradually opened, and the flow area of the bypass passage 14 is reduced. On the other hand, as the outside air temperature decreases from 15:00 to 16:00 and from 16:00 to 17:00, the second motor 1
74 is reversed step by step to increase the flow area of the bypass passage 14. As a result, the temperature state shown in FIG. 18 is established, and the cooling operation corresponding to the change in the outside air temperature, that is, the change in the indoor cooling load can be performed. It should be noted that when the operation start time is from 8 to 10 o'clock, normal rotation is one step, and when the operation start time is from 10 o'clock to 11 o'clock, normal operation is two steps. At any time, the cooling operation corresponding to the cooling load can be performed.

19 (a), (b) and (c) show the third embodiment according to the present invention. FIG. 19 is a side sectional view of a heat storage type air conditioner, and FIG. ) (b) (c) are plan sectional views showing a main part. In the third embodiment, a duct 39 is installed in the heat storage chamber 5 to guide a part of the air cooled by the evaporator 8 downward along the front wall 2a.

As shown in FIG. 20 (a), the duct 39 has a rectangular cross section in plan view, and three ducts 39 are installed at intervals from each other. There is. A blowout hole 39a communicating with the inside of the heat storage chamber 5 is formed on the lower side from the center of the duct 39, and a suction hole 13a is formed on the lower side of the partition wall 13 facing the duct 39. There is. The suction hole 13a has a larger opening area on the lower side.

In the first and second embodiments, the inside air is circulated so that the air cooled by the evaporator 8 flows from the upper part of the heat storage chamber 5 to the lower opening 14a of the bypass passage 14 as shown by the solid line arrow in FIG. There is. However, in this case, the upper heat storage agent A reaches the heat storage capacity in a short time, but the heat storage time of the lower heat storage agent A is delayed, and the coefficient of performance of the refrigerator may be reduced.

On the other hand, in the third embodiment, some of the cool air that has passed through the evaporator 8 passes through the duct 39 as indicated by the one-dot chain line arrow in FIG. It is blown into the heat storage chamber 5 from 39a. The blown out cool air cools the heat storage agent A at the center or at the bottom and is sucked into the suction hole 13a of the partition wall 13. Due to such circulation of the cool air, the heat storage agent A located at the center or at the bottom reaches the heat storage capacity in a short time.

Although FIG. 20 (a) shows a duct 39 having a rectangular cross section in plan view,
The triangular duct 40 as shown in (b), or FIG.
Of course, a trapezoidal duct 41 may be used as shown in 0 (c). FIG. 21 shows a fourth embodiment of the heat storage type air conditioner according to the present invention, and FIG. 21 is a side sectional view of the heat storage type air conditioner. In each of the above-described embodiments, the heat storage agent A having water as a main component having a low heat storage temperature is used as the heat storage agent A, but in the fourth embodiment, conversely, the heat storage agent B having a high heat storage temperature is also stored in the heat storage chamber 5. It is housed inside. The heat storage agent B is mainly composed of an aqueous solution of caustic soda.
Further, in the fourth embodiment, the heating device 42 is installed in parallel with the evaporator 8, and the heat storage agent B is heated by the heating of the heating device 42 to store heat.

According to this embodiment, when heat is stored for indoor cooling, it is sufficient to cool the heat storage agent A through the evaporator 8 and store the heat, as in the above-mentioned embodiments, while heating the room. Need only heat the heat storage agent B by using the heating device 42 to store heat, and thus, in this embodiment, both cooling and heating can be performed.

When all of the components stored in the heat storage chamber 5 are the heat storage agent B having a high heat storage temperature, it goes without saying that the heat storage air conditioner is dedicated to heating. Further, even in this heat storage type air conditioner dedicated to heating, the air conditioning control according to the first embodiment and the second embodiment can be performed, and the ducts 39, 40, 4 according to the third embodiment.
It goes without saying that the heat storage agent B can be stored using 1.

[0073]

As described above, according to the first aspect of the present invention, among the indoor air flowing into the heat storage chamber from the suction port during cooling and heating, it passes through the heat storage chamber and is passed through the upper air hole to the bypass passage. Since the flow rate of the flowing air amount and the air amount flowing from the lower end of the bypass passage to the bypass passage can be controlled by the air mix damper, the blowing temperature can be arbitrarily set by controlling the opening / closing of the air mix damper. Also,
The conventional brine circuit is not required, and the size and weight of the device can be reduced.

According to the invention of claim 2, a part of the air cooled by the cooling device or heated by the heating device is blown into the duct to cool or heat the heat storage agent located in the lower part of the heat storage chamber. , Its operating efficiency is improved.

According to the third aspect of the invention, since the air mix damper can be controlled based on the temperature difference between the temperature of the intake air and the temperature of the blown air, the temperature of the blown air can be controlled so that the temperature difference becomes a predetermined temperature. It is possible to prevent large changes in room temperature.

According to the fourth aspect of the present invention, the blown air temperature can be controlled so as to correspond to the cooling and heating load during the working hours.

According to the invention of claim 5, the blower can be driven at a high speed during the heat storage operation, and the blower can be driven at a low speed during the cooling and heating operation, so that the cooling or heating of the heat storage agent can be completed in a short time, and it is quiet. It is possible to realize excellent cooling and heating operation.

According to the sixth aspect of the present invention, since the drain water in the heat storage is pumped up by the pump and sprayed to the condenser through the sprinkler, the heat exchange efficiency of the condenser is improved rather than simply exchanging heat with the indoor air. Moreover, drainage of drain water becomes unnecessary.

[Brief description of drawings]

FIG. 1 is a front view of a heat storage type air conditioner according to a first embodiment.

FIG. 2 is a side sectional view of the heat storage type air conditioner according to the first embodiment.

FIG. 3 is a perspective view of a suction door and a blowout door according to the first embodiment.

FIG. 4 is a front view of a suction door and a blowout door according to the first embodiment.

FIG. 5 is a side view of the intake door and the outlet door according to the first embodiment.

FIG. 6 is a front view of the air mix damper according to the first embodiment.

FIG. 7 is a side sectional view of the air mix damper according to the first embodiment.

FIG. 8 is a plan view of the position detection plate according to the first embodiment.

FIG. 9 is a side cross-sectional view of the heat storage air conditioner according to the first embodiment, which is partially omitted.

FIG. 10 is a schematic configuration diagram showing a partially omitted water sprinkler according to the first embodiment.

FIG. 11 is a block diagram showing a control circuit for each operation according to the first embodiment.

FIG. 12 is a control flowchart of heat storage operation according to the first embodiment.

FIG. 13 is a control flowchart of the cooling operation according to the first embodiment.

FIG. 14 is a table showing drive control of the second motor according to the first embodiment.

FIG. 15 is a graph showing an example of temperature change according to the first embodiment.

FIG. 16 is a control flowchart of the cooling operation according to the second embodiment.

FIG. 17 is a table showing drive control of the second motor according to the second embodiment.

FIG. 18 is a graph showing an example of temperature change according to the second embodiment.

FIG. 19 is a side sectional view of a heat storage type air conditioner according to a third embodiment.

FIG. 20 is a plan sectional view showing an essential part according to the third embodiment.

FIG. 21 is a side sectional view of a heat storage type air conditioner according to a fourth embodiment.

FIG. 22 is a schematic circuit diagram of a conventional heat storage type air conditioner.

[Explanation of symbols]

1 ... Heat storage type air conditioner, 2 ... Heat storage warehouse, 2a ... Front wall,
3 ... Suction port, 4 ... Outlet port, 5 ... Heat storage chamber, 5a ... Upper opening, 7 ... Suction door, 8 ... Evaporator, 9 ... Compressor, 10 ...
Condenser, 11 ... Expansion valve, 13 ... Partition wall, 13a ... Suction hole, 14 ... Bypass passage, 14a ... Lower end opening, 14b ...
Top opening, 15 ... Air hole, 16 ... Air outlet door, 17 ... Air mix damper, 18 ... Blower, 19 ... Drain tank,
20 ... Connection member, 21 ... Sprinkler, 22 ... Pump, 26
... CPU, 30 ... Chamber temperature sensor, 31 ... Suction temperature sensor, 32 ... Blowing temperature sensor, 39, 40, 41 ... Duct, 39a ... Blowing hole, 42 ... Heating device, A, B ... Heat storage agent.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kaoru Yanagisawa 20 Kotobukicho, Isesaki-shi, Gunma Sanden Stock Association In-house (72) Eiichi Kawawada 20 Kotobukicho, Isesaki-shi, Gunma Sanden Stock Company In-house

Claims (6)

[Claims] 1. A heat storage agent is housed in a heat storage chamber, and at the time of heat storage, a lower inlet and an upper outlet are closed and internal air is circulated to cool the heat agent with a cooling device or heat it with a heating device. In a heat storage type air conditioner that opens the suction port and the discharge port at the time of cooling and heating, sucks indoor air into the compartment, exchanges heat with the heat storage agent, and blows out into the room, the heat storage that stores the heat storage agent in the heat storage compartment. A chamber, a bypass passage having one end facing the suction port from the lower part of the heat storage chamber and the other end facing the outlet port and an upper opening of the heat storage chamber, and the heat storage chamber and the bypass near the upper part in the heat storage chamber. An air hole communicating with the passage and installed in the bypass passage between the air hole portion and the upper opening portion of the heat storage chamber to circulate the inside air of the inside air and suck and blow the outside air. A blower and the viper Thermal storage type air conditioning apparatus characterized by comprising an air mixing damper for opening and closing control such contradictory and flow area of the air hole and flow area of the passage, respectively. 2. Formed to face the bypass passage,
A duct for guiding a part of the air cooled by the cooling device or heated by the heating device downward along the side wall of the heat storage chamber is provided, and an outlet hole communicating with the heat storage chamber is provided in the duct. The heat storage type air conditioner according to claim 1, wherein a partition wall that separates the chamber and the bypass passage is provided with a suction hole that communicates with the heat storage chamber and the bypass passage. 3. An intake temperature sensor for detecting the temperature of the intake air, an outlet temperature sensor for detecting the temperature of the outlet air, and an arithmetic means for calculating the temperature difference between the detected temperatures detected by the respective temperature sensors. The heat storage type air conditioner according to claim 1 or 2, further comprising: an opening degree control unit that controls an opening degree of the air mix damper based on a temperature difference. 4. The heat storage type air conditioner according to claim 1 or 2, further comprising opening control means for controlling the opening of the air mix damper in accordance with the heating / cooling operation time. 5. The fan is driven at high speed during heat storage operation,
The heat storage type air conditioner according to any one of claims 1 to 4, further comprising a blower control means for driving the blower at a low speed during a cooling / heating operation. 6. The cooling device comprises a refrigerant refrigerator that circulates a refrigerant sequentially to a compressor, a condenser, an expansion means and an evaporator, and a drain tank for storing drain water from the heat storage, and 6. A pump for feeding drain water to the condenser side, and a sprinkler for sprinkling the drain water pumped up by the pump on the condenser, according to any one of claims 1 to 5. The heat storage type air conditioner described in the item.