KR100598458B1 - Apparatus for recovering waste heat of ventilation for air conditioner - Google Patents

Abstract

The present invention relates to a ventilated waste heat recovery apparatus for an air conditioning and heating air conditioner. The object of the present invention is to install only a duct structure for ventilation regardless of whether a condenser and an evaporator constituting an air conditioning air conditioner are integrated. It is to provide a simple and convenient device for heat exchange by the surface contact between the intake and exhaust ventilation air rather than heat exchange.

The configuration of the present invention is empty case; An exhaust chamber communicating with an exhaust hole formed on one side of the case, insulated from all sides by a partition wall in the case, and having an air discharge pipe; An intake chamber communicating with an intake hole formed in one side of the case, insulated from all sides by an inside of the case, and having an air intake tube formed therein; An exhaust chamber for communicating with the air discharge tube and formed on one side of the case; An intake lowering chamber communicating with the air intake tube and formed on the other side of the case; A discharge branch pipe bent at an upper end of the lift chamber; An intake branch pipe bent at an upper end of the descending chamber; The discharge branch pipe and the heat exchange intake branch pipe is characterized in that consisting of the discharge pipe and the intake pipe formed bent upwards.

Intake, Exhaust, Ventilation, Air Conditioner, Exhaust Chamber, Intake Chamber

Description

Apparatus for recovering waste heat of ventilation for air conditioner

1 is a schematic diagram illustrating a cooling and heating principle of a general GHP system.

2 is a schematic diagram illustrating a cooling and heating principle of a general EHP system.

Figure 3 is a schematic diagram illustrating the cooling and heating principle of a direct-type HH system (AHU) system,

Figure 4 is a schematic diagram illustrating the cooling and heating principle of a general AHU healing (AHU) system,

5 is a schematic perspective view of a conventional airflow switching air-conditioning combined air conditioner,

6 is a schematic perspective view of a conventional air conditioner for controlling waste heat recovery and combined heating and cooling;

7 is a perspective view showing the appearance of the apparatus of the present invention,

8 is a perspective view showing a partial incision of the device of the present invention,

9 is a plan view showing the internal configuration of the present invention,

10 is a front view showing the internal configuration of the present invention,

11 is a side view showing the internal configuration of the present invention,

12 is a front view showing the internal configuration of the fan further included.

<Description of the symbols for the main parts of the drawings>

(1): case (2): exhaust chamber

(3): Intake chamber (4): Exhaust chamber for exhaust

(5): Intake descending chamber (6): Exhaust branch pipe

(7): intake branch pipe (8): discharge pipe

(9) Intake pipe 11 Exhaust hole

(12) Intake hole 14a: Central bulkhead
14b: exhaust side partition wall 14c: intake side partition wall

(15): upper bulkhead 21: air discharge pipe

(31): air intake pipe (32): intake fan

22: blower fan

The present invention relates to a ventilation waste heat recovery apparatus for an air conditioning and air conditioner, and more particularly, to an apparatus for improving the heating and cooling efficiency by heat exchange between the air being ventilated and the air being intaken.

Commonly used air-conditioning devices include GHP, IHP, EH (AHU), AHU (AHU) system, and the like.

1 is a schematic diagram illustrating a cooling and heating principle of a general GHP system. In the case of GHP, a gas engine is operated by a gas engine during heating to drive a refrigerant gas compressor. Is condensed by heat exchange with indoor air in the heat exchanger of indoor unit (in this case, the room is heated). After heat exchange, it expands to become medium-medium-medium-pressure refrigerant liquid and evaporates while passing through outdoor unit heat exchanger. Of refrigerant gas. After returning to the accumulator through the plate heat exchanger (engine coolant and exhaust gas heat exchange), which is a device that recycles the exhaust heat generated during engine operation, the refrigerant compressor compresses the refrigerant gas again as described above. The refrigerant gas is sent back to the indoor unit to condense and heating cycle operation is continued by continuously performing compression, condensation, expansion, and evaporation processes as follows.

In addition, during cooling, the refrigerant gas is compressed in the refrigerant compressor, and the refrigerant gas is condensed through the subcooler and the outdoor heat exchanger of the outdoor unit (when heating, it functions as an evaporator and as a condenser when cooling). The condensed refrigerant liquid expands on the expansion side of the indoor unit and evaporates in the heat exchanger of the indoor unit. At this time, the heat exchanger of the indoor unit serves as an evaporator, and the indoor air becomes cold by the heat of evaporation (when heating, it functions as a condenser and when cooling, it functions as an evaporator). The refrigerant gas from the heat exchanger (evaporator) of the indoor unit is collected into the accumulator through four directions and enters the refrigerant gas compressor. The cooling cycle operation continues while repeating the above process.

2 is a schematic diagram illustrating the cooling and heating principle of a general EHP system. In the case of EHP, a cooling and heating operation is performed by using a gas engine to drive a refrigerant compressor in the GHP system. In the EHP system, however, the motor is driven using electricity, and the refrigerant compressor is driven by the motor. Since the cooling and heating process after the refrigerant is compressed is the same as that of GHP, a detailed description thereof will be omitted here.

3 and 4 are related to AHU system, and there are two types of AHU system.

3 is a schematic diagram illustrating a cooling and heating principle of a direct-type AHU system. When describing a direct-type using a refrigerant, a motor is used to drive a refrigerant compressor and a heat exchanger is used. Cooling and heating in the process of inhalation, compression, expansion, and condensation in a series of thermal cycles is the same as EHP, but the difference from EHP is from the heat exchanger to the room. The air duct is supplied with cold or warm air and intake. In other words, there is an advantage of cooling and heating while supplying outside air through a supply air duct, a supply duct, a return duct, an exhaust duct, and an out air duct.

Figure 4 is a schematic diagram illustrating the cooling and heating principle of a typical AHU system, AH and FCU using cold and hot water is a cold water and hot water absorber as a heat source of cold water and hot water. In addition, steam boilers are required for heat supply, and thus, a lot of electricity and oil (oil) are used. In addition, separate equipment such as a cooling tower is required for cooling the equipment. An air duct for indoor cooling and heating is the same as that of the direct expansion, and thus description thereof is omitted.

Among the methods described above, the method is configured to recover the waste heat exhausted for ventilation by further improving the structure of AH oil supplying the heating and cooling air through the duct (Korean Patent Application No. 10-1999-41890) Airflow conversion air-conditioning combined air conditioner, see Fig. 5 and the domestic patent application No. 10-2000-23444 (name: ventilation recovery rate control line waste heat recovery combined air-conditioning air conditioner, see Fig. 6).

Looking at the purpose of the prior art as described above Patent Application No. 10-1999-41890 is equipped with a ventilation function of the indoor air to recover the total amount of energy in the exhaust during ventilation, it is possible to precisely control or maintain the temperature and humidity of the room Provides a new air conditioning and air conditioner of a new structure, the patent application No. 10-2000-23444 adds the ventilation function of the indoor air that was not possible in the existing packaged air conditioning air conditioner, cooling the air in the exhaust air, It can be seen that the present invention is to provide a cooling and heating air-conditioner for controlling the recovery rate of ventilation to maximize the cooling and heating efficiency by recovering all the waste heat energy.

For this purpose, Patent Application No. 10-1999-41890 discloses a compressor 54, a condenser 53, an expansion valve 55 and an evaporator 52 and a refrigerant pipe 59 as shown in FIG. Partitions 525 and 526, which include a blower 510a and b, and an indoor side discharge port 511 and an indoor side suction port 512, and an outdoor side discharge port 513 and an outdoor side suction port 514, which are opened outdoors. The case 51 and the inner side discharge port 511 and the indoor side suction opening 512 and between the outdoor side discharge opening 513 and the outdoor side suction opening 514 are formed so as to be partitioned, respectively. 52 and a heat exchange chamber 520 provided with a condenser 53, a first damper 531 formed between the evaporator 52 and the indoor discharge port 511, and between the condenser 53 and the indoor discharge port 511. A second damper 532 formed in the second damper 532, a third damper 533 formed between the indoor suction port 512 and the evaporator 52, and a fourth damper formed between the indoor suction port 512 and the condenser 53 ( 534) , The fifth damper 535 formed between the outdoor side suction port 514 and the evaporator 52, the sixth damper 536 formed between the condenser 53 and the outdoor side suction port 514, and the outdoor side discharge port 513. ) And an eighth damper 538 formed between the evaporator 52 and an eighth damper 538 formed between the outdoor side discharge port 513 and the condenser 53. 514) and the air flow switching air conditioning combined air-conditioning unit including an auxiliary condenser (not shown) installed between the condenser 53 and connected to the refrigerant pipe 59 between the condenser 53 and the evaporator 52. Is configured,

In addition, Patent Application No. 10-2000-23444, as shown in Figure 6 'evaporator and condenser is installed in one case, the four-way reverse valve to switch the flow direction of the refrigerant to perform the cooling and heating function, damper In the air-conditioning and air conditioner that performs ventilation and cooling and heating at the same time by controlling the amount of outdoor air introduced and the amount of indoor air discharge, one side of the case 610 inside the discharge port 621, the air supply blower 622, the evaporator 623, an evaporator drain plate 624, an expansion valve 625, and an air cleaning heat exchange chamber 620 including an air cleaning filter 626 are installed, and the other side inside the case 610 is an outdoor side. A recovery heat exchange chamber 630 including a discharge port 631, an exhaust blower 632, a condenser 633, a condenser drain plate 634, and an expansion valve 635 is installed. The space between the receiving heat exchange chambers is transverse An indoor air intake chamber 650 partitioned in the horizontal direction by the wall 640 and having an indoor air inlet 651 through which one of the indoor air flows is opened at one side of the transverse bulkhead 640; A first damper 652 which divides an indoor air suction chamber 650 and the recovery heat exchange chamber 630 and controls an opening degree of an air flow passage; A second damper 651, which is a ventilation damping control damper for dividing the 650 and the heat exchange chamber 620 for the ventilation air supply and controlling the opening degree of the air flow passage, is installed, and the other of the transverse bulkhead 640 is provided. On the side, an outdoor air intake chamber 660 having an outdoor air inlet 661 through which outdoor air is introduced, and the outdoor air intake chamber 660 and the recovery heat exchange chamber 630 are partitioned. And outside rate utilization damper to control the opening of air flow passage A fourth damper (3) which is a third air damper (662) which controls the opening degree of the air flow passage while dividing the third damper (662), the outdoor air intake chamber (660) and the heat exchange chamber (620) for the ventilation air supply. 663 is installed, at least one cooling water sprayer 672 is provided at a front side of the condenser 633 at predetermined intervals, and is installed at one side of the evaporator drain plate 671 to the evaporator drain plate. Condensate pump 671 for forced circulation of the falling condensate water to the cooling water sprayer when the water level, and the condensate water supply pipe (673) connecting the condensate pump 671 and the cooling water sprayer 672 is installed to the evaporator Conventional air is constructed by constructing a cooling / heating air conditioner for combined use of ventilation recovery rate controlled waste heat recovery with a condensate forced water discharging means for forcibly cooling condensate falling onto the drain plate by water cooling. Provided was a method of recovering waste heat for ventilation which was not solved by the conditioner.

However, in the conventional method of recovering waste heat for ventilation, the air discharged or sucked for ventilation is mixed with cold or hot air through different paths according to the cooling and heating mode, and then contacted with an evaporator or a condenser to recover waste heat. It is configured to be supplied indoors and discharged outdoors in one state. At this time, the ratio between the air recirculated to the room and the newly supplied air is adjusted by appropriately opening and closing and adjusting the opening using a plurality of damper structures.

However, the waste heat recovery configuration as described above requires an integrated air conditioning and air conditioner in which the evaporator and the condenser are provided in one case, and in order to recover the waste heat from such a configuration, there must be a complex damper configuration and a controller that adjusts them appropriately. The complexity of the configuration,

In addition, there is a problem that the heat exchange structure that the internal flow path structure must be designed so that the discharged ventilation air and the suction ventilation air are not in contact with each other and heat-exchanged, and the heat-exchanging structure must be designed to individually heat-exchange with the refrigerant of the evaporator and condenser.

An object of the present invention for solving the above problems can be installed if the condenser and the evaporator constituting the cooling and heating air conditioner is integrated only if the ventilation duct structure, the heat exchange with the conventional refrigerant during the heat exchange and suction It is to provide a simple and convenient device for heat exchange by the surface contact between the discharged air.

The present invention to achieve the object as described above and to solve the conventional drawbacks in the waste heat recovery apparatus for ventilation provided with a heating and cooling air conditioner having a ventilation duct for exhaust and intake, exhaust on one side And an empty case having an exhaust hole and an intake hole to which the ventilation duct for intake is connected;

In communication with the exhaust hole formed in one side of the case,
A central partition wall formed in contact with both sides of the case from the center to the width direction to divide the inner space of the case in a longitudinal direction; The upper part of the space formed by the partition wall and the exhaust-side partition wall is formed of an upper partition wall spaced apart from the bottom surface of the case by a predetermined distance so as to have a discharge branch pipe and an intake branch pipe, thereby forming a space part in which all four sides are isolated.
An exhaust chamber in which an air discharge pipe communicating with one point of the exhaust side partition wall is formed;

In communication with the intake hole formed on one side of the case,
A central partition wall formed in contact with both sides of the case from the center to the width direction to divide the inner space of the case in a longitudinal direction; An upper part of the space formed by the partition wall and the intake side partition wall is formed of an upper partition wall spaced apart from the bottom surface of the case by a predetermined distance so as to have a discharge branch pipe and an intake branch pipe.
An air intake chamber in which an air intake pipe communicating with one point of the intake side partition wall is formed;
An exhaust chamber for communicating with an air discharge pipe formed on one surface of the exhaust chamber and formed on one side of the case;

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An intake lowering chamber communicating with an air intake tube formed on an inner surface of the intake chamber and formed on the other side of the case;

An exhaust branch pipe bent at an upper end of the ascending chamber and exchanging heat with intake air;

An intake branch pipe bent at an upper end of the lower chamber to exchange heat with the exhaust air;

A discharge pipe formed by protruding the exhaust branch pipe for heat exchange in an upward direction;

The intake branch pipe for heat exchange is bent upwardly characterized in that it consists of an intake pipe formed protruding.

The discharge branch pipes and the intake branch pipes are arranged in surface contact with a plurality of discharge heat pipes and a large heat exchange area between the intake air periods. As the contact area is increased by the surface contact structure, the discharged air and the intake air are more heat exchanged, thereby increasing heat exchange efficiency.

The number of the discharge branch pipes is formed to be larger than the number of the intake branch pipes. The area of the air discharged by the surface contact arrangement is larger than the area of the intake air, thereby increasing the amount of heat exchanged and recovered than the waste heat discharged, thereby increasing heat exchange efficiency.

The discharge branch pipe and the intake branch pipe may further include a heat dissipation fin structure formed at an inner side thereof so that a heat exchange area between the discharge air and the intake air period is large. As the contact area increases due to the heat dissipation fin structure, the discharged air and the intake air have more surface contact, thereby increasing heat exchange efficiency.

It further comprises a blower fan connected to the air discharge pipe and the exhaust hole in the exhaust chamber. With this configuration, even if the duct length from the air conditioner to the present invention recovery device is long, the ventilation efficiency is increased.

It further comprises an intake fan connected to the air intake pipe and the intake hole in the intake chamber. This configuration increases the ventilation efficiency from the outside air to the present invention recovery apparatus.

Hereinafter, the configuration and the operation of the embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 7 is a perspective view showing the appearance of the device of the present invention, Figure 8 is a perspective view showing a partial cutaway of the device of the present invention, Figure 9 is a plan view showing the internal configuration of the present invention, Figure 10 is a front view showing the internal configuration of the present invention, 11 is a side view showing the internal configuration of the present invention,

In the apparatus of the present invention, an exhaust hole 11 and an intake hole 12 to which a ventilation duct for exhaust and intake are connected are formed on one side of the empty case 1 that forms the body.

Although the illustrated exhaust hole 11 and the intake hole 12 are shown in a circular shape for convenience, the shape of the pipe duct may be freely changed depending on whether the shape of the pipe duct is square or circular.

Looking at the configuration of the internal empty space of the case 1, when looking at the configuration of the internal empty space of the case 1, it is in communication with the exhaust hole 11 formed on one side of the case 1, the case (1) In order to divide the internal space in the longitudinal direction, the central partition wall 14a formed in contact with both sides of the case from the center to the width direction, and the exhaust side partition wall formed at one side inside the case at a predetermined distance in parallel with the central partition wall ( 14b) and an upper partition 15 provided with a discharge branch pipe 6 and an intake branch pipe 7 spaced upwards from the bottom surface of the case so as to have a discharge branch pipe 6 and an intake branch pipe 7 above the space formed by the central partition wall and the exhaust side partition wall. The exhaust chamber 2 in which the space part which consists of) is isolate | separated from all directions, and the air discharge pipe 21 which communicates with any one point of the said exhaust side partition 14b is formed is formed.

In addition, it communicates with the intake hole 12 formed in one side of the case 1 which is symmetrical with the exhaust chamber 2, and in the width direction from the center portion to divide the internal space of the case 1 in the longitudinal direction. The upper part of the space which the center part partition 14a formed across the case both sides across, the intake side partition 14c formed in the case inside one side in parallel with this center part partition, and this center part and the intake side partition are formed. The upper partition wall 15 is provided with a discharge branch pipe 6 and an intake branch pipe 7 spaced apart a predetermined distance upward from the bottom surface of the case to form a space part isolated from all sides, the intake side An intake chamber 3 in which an air intake tube 31 communicating with one point of the partition 14c is formed is formed inside the case.

Such a space of the exhaust chamber 2 and the intake chamber 3 is left in an empty space so that the exhaust and intake air stays therein and heat exchanges primarily between the central partition walls, or the exhaust illustrated in FIG. 12. And an intake fan in each chamber to be used as a space for enhancing the exhaust force and the intake force.

The space portion communicating with the air discharge pipe 21 formed on one inner surface of the exhaust chamber 2 formed in the case is composed of an exhaust raising chamber 4 formed on one side of the case. The air exhausted through this rising chamber 4 rises.

The space portion communicating with the air intake tube 31 formed on one surface of the intake chamber 3 formed inside the case is composed of the intake lowering chamber 5 formed on the other side of the case. Air sucked through the lowering chamber 5 is lowered.

The upper end of the ascending chamber 4 is bent to form a discharge branch pipe 6 for heat exchange with the intake air. In addition, the upper end of the lowering chamber 5 is bent to form an intake branch pipe 7 that exchanges heat with the exhaust air. The lower part of the discharge branch pipe 6 and the intake branch pipe 7 is the upper partition 15 which blocks the upper part of the center part partition wall, the exhaust side partition wall, and the intake side partition wall mentioned above.

The discharge branch pipe 6 and the intake branch pipe 7 may further include a heat radiation fin inward to increase the heat exchange efficiency. The shape of the heat dissipation fin of the present invention not shown in this way may be any shape. It is sufficient if the shape only increases the heat contact area of the intake and exhaust air periods of the present invention to increase the heat exchange efficiency.

An end portion of the heat exchange discharge branch pipe 6 is formed to have a discharge pipe 8 bent upwardly and protruded, and an end portion of the heat exchange intake branch pipe is bent upwardly and formed as an intake pipe 9 protruded. do. The top of the discharge pipe (8) and the intake pipe (9) constituted a mesh network to prevent foreign substances from entering the apparatus of the present invention.

FIG. 12 is a front view showing an internal configuration in which a fan is further included, and further includes an intake fan 32 connected to an air intake tube 31 and an intake hole 12 in the intake chamber 5. It can be configured to include. This additional configuration increases the ventilation efficiency from the outside air to the present invention recovery device.

The exhaust chamber 4 may further include a blower fan 22 connected to the air discharge pipe 21 and the exhaust hole 11, respectively. With this configuration, even if the duct length from the air conditioner to the present invention recovery device is long, the ventilation efficiency is increased.

Referring to the operation of the present invention having the configuration as described above are as follows.

In general, the air conditioner is efficiently used by recirculating cold or warm air used for cooling and heating efficiency, and during this recirculation, some air is discharged out and at the same time, the air corresponding to the amount of exhaust is replenished and ventilated. When the exhaust air is transferred from the air conditioner having the ventilation duct through the exhaust ventilation duct and then enters the exhaust chamber through the exhaust hole formed on one side of the case, the exhaust fan in the chamber is blown by the blower fan. Is stably passed through the air discharge pipe and is supplied to the top through the ascending chamber. Thereafter, the flow path is bent from the ceiling side and exchanges heat by the surface contact with the intake branch pipe passing through the plurality of discharge branch pipes. The heat exchanged air is taken out to the outside through the discharge pipe.

Likewise, the air that has been heat-exchanged while passing through the intake branch pipe and recovered the waste heat goes down to the descending chamber, passes through the air intake pipe and the intake chamber with the intake fan, and then passes through the air conditioner through the intake ventilation duct connected to the intake hole. Will be supplied.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

The present invention as described above has the advantage that the condenser and the evaporator constituting the cooling and heating air conditioner can be installed if only the duct structure for ventilation, and if only the ventilation duct is applicable to the conventional air-conditioning air conditioner, and the intake It is a useful invention having the advantage that the heat exchange structure between the air to be exhausted and the air is simple and the heat exchange efficiency is good, the invention is expected to be greatly used in the industry.

Claims (6)

In the waste heat recovery apparatus for ventilation provided with a heating and cooling air conditioner having a ventilation duct for exhaust and intake, An empty case having an exhaust hole and an intake hole connected to one side of the ventilation duct for exhaust and intake air; A central partition wall communicating with an exhaust hole formed in one side surface of the case and abutting with both sides of the case across the width direction from the center portion to divide the inner space of the case in a longitudinal direction, and being spaced a predetermined distance in parallel with the central partition wall; And an exhaust side partition wall formed on one side of the case, and an upper branch wall spaced apart from the bottom surface of the case by a predetermined distance so as to have an exhaust branch pipe and an intake branch pipe at an upper portion of the space formed by the central partition wall and the exhaust side partition wall. An exhaust chamber configured to have a space portion separated from all sides and having an air discharge pipe communicating with one point of the exhaust side partition wall; A central partition wall communicating with an intake hole formed in one side surface of the case and contacting both sides of the case in a width direction from the center portion to divide the inner space of the case in a longitudinal direction, and being spaced a predetermined distance in parallel with the central partition wall; And an intake side partition wall formed on one side of the case and an upper branch wall spaced apart from the bottom surface of the case by a predetermined distance so as to have an outlet branch pipe and an intake branch pipe at an upper portion of the space formed by the central partition wall and the intake side partition wall. An intake chamber configured to form a space portion in which all four sides are isolated, and an air intake tube communicating with one point of the intake side partition wall; An exhaust chamber for communicating with an air discharge pipe formed on one surface of the exhaust chamber and formed on one side of the case; An intake lowering chamber communicating with an air intake tube formed on an inner surface of the intake chamber and formed on the other side of the case; An exhaust branch pipe bent at an upper end of the ascending chamber and exchanging heat with intake air; An intake branch pipe bent at an upper end of the lower chamber to exchange heat with the exhaust air; A discharge pipe formed by bending the heat exchange discharge branch pipe in an upward direction; Ventilation waste heat recovery apparatus for a heating and cooling air conditioner, characterized in that the intake pipe formed by bending the heat exchange intake branch pipe upward. The method of claim 1, The exhaust branch pipe and the intake branch pipe is composed of a plurality of exhaust heat and the intake air period so that the heat exchange area of the ventilation waste heat recovery apparatus for the heating and cooling air conditioner, characterized in that arranged in surface contact. The method according to claim 1 or 2, Ventilation waste heat recovery apparatus for a heating and cooling air conditioner, characterized in that the number of the exhaust branch pipe is formed more than the number of intake branch pipe. The method according to claim 1 or 2, The exhaust branch pipe and the intake branch pipe is a waste heat recovery apparatus for a heating and cooling air conditioner, characterized in that the heat dissipation fin structure is further formed on the inner side so as to have a large heat exchange area between the discharge air and the intake air period. The method of claim 1, Ventilation waste heat recovery apparatus for a heating and cooling air conditioner, characterized in that further comprising a blower fan connected to the air discharge pipe and the exhaust hole in the exhaust chamber. The method of claim 1, Ventilation waste heat recovery apparatus for a heating and cooling air conditioner further comprises an air intake pipe and an intake fan connected to the intake hole in the intake chamber.

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