KR101811981B1 - Air conditioner with waste heat reuse function - Google Patents

Abstract

The present invention relates to an air conditioner having a waste heat reuse function to save energy by collecting and reusing waste heat discharged to the outside. The air conditioner also has a dehumidification function, a humidification function, and a ventilation function as well as a cooling function and a heating function. To achieve the purpose of the present invention, the air conditioner comprises: a chamber having an inlet (110) sucking outer air, a cooling port (120) in which refrigerant air flows, an air supply unit (130) supplying treated air, and an exhaust port (140) which waste heat air is discharged from; a dehumidification rotor (200) installed in order for the outer air of the inlet (110) and the waste heat air heated after heat exchange to individually flow inside, wherein the dehumidification rotor (200) provides dried air by dehumidifying and drying the outer air of the inlet (110) by using a dehumidifying agent and raising temperature at same time; a first heat exchanger (300) enabling the dried air of the dehumidification rotor (200) to flow inside and installed on a side to which the refrigerant air of the cooling port (120) flows into, wherein the first heat exchanger (300) provides the treated air firstly cooled by the heat exchange of the refrigerant air with the dried air of the dehumidification rotor (200) while the refrigerant air of the cooling port (120) flows inside; and a first heater (400) enabling the waste heat air heated after being heat-exchanged in the first heat exchanger (300) to flow into the dehumidification rotor (200) while repeatedly heating the waste heat air, and directly heating the dehumidification rotor (200). The treated air cooled by the first heat exchanger (300) performs cooling while being supplied to the outside by the air supply unit (130).

Description

[0001] The present invention relates to an air conditioner having a waste heat reuse function,

The present invention relates to an air conditioner having a function of reusing waste heat to save energy by collecting and reusing waste heat discharged to the outside, as well as cooling, heating, dehumidifying, humidifying and ventilating functions The present invention relates to an air conditioner.

Generally, the outdoor air conditioner for four seasons is designed to control the temperature and the humidity simultaneously by using an outdoor unit. Recently, a heat pump for four seasons has been developed for selecting the function of an air conditioner and a heater.

An air conditioner is disclosed in which a method for providing dehumidified air by removing moisture from a desiccant in a heat pump for four seasons is added.

For example, in the prior art, Japanese Laid-Open Patent Publication No. 2002-0083915 discloses a device having both cooling and heating, ventilation, and dehumidifying functions. The device includes a duct having an air intake passage and a discharge passage, A dehumidifying device rotatably installed in the suction passage and the discharge passage of the duct, the dehumidifying device being rotatably installed in the discharge passage, the dechucking material being applied to the dehumidifying device and forming a plurality of air holes, A regenerative heater which heats the air flowing into the apparatus to discharge moisture, an exhaust heat exchanger installed on the indoor side based on the dehumidifying device and installed in the suction passage and the discharge passage, outdoor air introduced into the duct, And a heat pump device for supplying heat to the indoor space by heat exchange.

However, technological problems to be improved have been exposed in the past.

In the conventional case, since the cooling system applied to the air conditioner has a structure in which a heat pump including a compressor, a condenser, an expansion valve and an evaporator is applied, an outdoor unit provided with a heat pump is required, And installation costs are increased. In addition, there is a problem in that fossil energy such as Freon gas is used for the refrigerant of the cooling system, and energy waste due to use of large electric power for operation of the compressor is caused.

In addition, in the conventional case, there is a problem that energy is wasted due to the hot air discharged from the air conditioner to the outside without being recycled.

Korean Patent Laid-Open Publication No. 2002-0083915 is proposed.

The present invention solves the conventional problems. The air conditioner performs the cooling and heating without applying the heat pump composed of the compressor, the condenser, the expansion valve and the evaporator in the air conditioner, so that the outdoor unit for the heat pump is not necessary, And it is an object of the present invention to provide an air conditioner having a waste heat reuse function capable of reducing the installation cost while saving energy by not requiring refrigerant for cooling and heating and consuming a large amount of electric power.

It is another object of the present invention to minimize the energy for operation of the air conditioner by performing heat exchange for cooling in the air conditioner and making hot air discharged to the outside possible to be recycled.

According to an aspect of the present invention,

As an air conditioner,

A chamber having a suction port through which the outside air is sucked, a cooling port through which the coolant air flows, a supply mechanism for supplying the process air, and an exhaust port through which the waste heat air is discharged;

A dehumidifying rotor installed to introduce the outside air of the inlet and the waste heat air heated after heat exchange, dehumidifying the outside air of the inlet by using a dehumidifying agent, drying the same, and increasing the temperature to provide dry air;

The drying air of the dehumidification rotor is introduced and the cooling air of the cooling hole is introduced into the cooling hole to provide the processing air which is primarily cooled by heat exchange with the drying air of the dehumidifying rotor A first heat exchanger;

And a first heater which directly heats the dehumidification rotor by flowing waste heat air heated after heat exchange in the first heat exchanger to the dehumidification rotor again by heating,

And the air to be cooled through the first heat exchanger is supplied to the outside by the air supply mechanism to perform the cooling.

According to the present invention, since the structure is improved to perform cooling and heating by using a cooling system by heat exchange between air that has been preheated and air that is separately introduced while removing moisture from the air introduced into the air conditioner by using a dehumidifying method, There is no need for an outdoor unit for the pump, so that it can be installed in a narrow space, the installation cost can be reduced, refrigerant for cooling and heating is unnecessary, and there is no heat pump that consumes a large electric power.

In addition, while performing heat exchange for cooling in the air conditioner, it recovers the heated air discharged to the outside, and improves the structure to be recycled after mixing with the incoming air, thereby increasing the utilization efficiency of the heat energy. There is another effect that can save energy as much as possible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an air conditioner having a waste heat reuse function according to an embodiment of the present invention; FIG.

The characteristics of the air conditioner having the waste heat reuse function according to the present invention will be understood by the embodiments described in detail below with reference to the accompanying drawings.

In the following description of the exemplary embodiments of the present invention, a detailed description of components that are widely known and used in the art to which the present invention belongs is omitted, and unnecessary explanations thereof are omitted. It is to communicate the point more clearly.

1 is a view illustrating an air conditioner having a waste heat reuse function according to each embodiment of the present invention.

The air conditioner 1 according to the present invention includes: a chamber 100; A dehumidification rotor (200); A first heat exchanger (300); A first heater 400; A first humidifier 500; A second heat exchanger (700); A second humidifier 800; A second heater 600; And a recirculation unit (900).

Hereinafter, as a basic constitution of the present invention, the constitution of each part for an air conditioner having a waste heat reuse function according to one embodiment will be described in detail with reference to FIG. 1 is a schematic configuration diagram of an air conditioner.

First, the chamber 100 includes:

A cooling device 120 for introducing the coolant air, a cooler 130 for supplying process air, and an exhaust port 140 for exhausting the waste heat air are provided. And to provide a space so as to have a circulation cycle for discharging the process air again.

Here, the chamber 100 includes: (110) for allowing outside air to flow into the chamber (100) at an arbitrary position on the side, a refrigerant air for the refrigerant can be supplied to the second A cooler 120 for supplying the heat to the heat exchanger 700, a supply mechanism 130 for supplying air to the outside by supplying the processed air processed inside the chamber 100 to outside, a waste heat air And an exhaust port 140 for exhausting the exhaust gas to the outside.

At this time, the chamber 100 may include various kinds of sensors for monitoring the internal state, and the sensors may be, for example, a temperature sensor, a wind pressure sensor, and the like.

In addition, the chamber 100 includes: And a partition 150 which has a first area 150a and a second area 150b formed by partitioning a space inside.

The partition 150 may include a first area 150a horizontally installed at the center of the interior of the chamber 100 as a plate and treated with external air while being treated with the external air, And the second region 150b into which heated air flows.

At this time, the first region 150a is provided with a suction port 110 and a supply mechanism 130, and the first heat exchanger 300, the first humidifier 500, the second heat exchanger 700, A second humidifier 800 and a second heater 600 are installed in the second area 150b and an exhaust port 140 is disposed in the second area 150b and a first heater 400 described later is installed.

Both sides of a dehumidification rotor 200 to be described later are communicated between the first and second areas 150a and 150b so that external air is introduced into one side of the dehumidification rotor 200 and heated air Thereby inducing an incoming air mixing action.

In addition, the chamber 100 includes: A suction fan 161 coupled to the side adjacent to the suction port 110 and adapted to suck the outside air into the chamber 100; a waste heat pump 160 coupled to the side adjacent to the discharge port 140, And an exhaust fan 162 for forcibly discharging the air to the outside.

The intake fan 161 and the exhaust fan 162 can control the inflow and outflow of air by adjusting the rotational speed according to the operating conditions of the air conditioner 1. [

At this time, a filter for filtering impurities such as dust in the air is provided in the air inlet 110, the air supply unit 130, and the air outlet 140.

The dehumidifying rotor 200 includes:

The outside air of the inlet 110 and the waste heat air heated after the heat exchange are respectively introduced into the air inlet 110 and the air inlet 110. The air is dehumidified by using a dehumidifying agent and dried, will be.

The dehumidifying rotor 200 is provided with a dehumidifying agent mixed or impregnated therein or coated thereon. One side of the dehumidifying rotor 200 is connected to the desiccant rotor 200, And the other of the first region 150a and the second region 150b has a heating region 220 located in the second region 150b and is rotatable in the chamber 100, And a space through which the air flowing in the first space 150b flows.

At this time, the drying region 210 is a portion into which the outside air of the inlet 110 flows, the heating region 220 is a portion into which the waste heat air heated by heat exchange flows, The dehumidification rotor 200 maintains a high temperature state due to the introduction of the hot air, and the dehumidification rotor 200 can be forcibly heated using the first heater 400 separately from the waste heat air.

The dehumidification rotor 200 maintains the high temperature state and dries the outside air flowing into the first heat exchanger 300 by using a dehumidifying agent while heating it to a high temperature.

The first heat exchanger (300) includes:

The drying air of the dehumidification rotor 200 flows into the cooling air inlet of the cooling hole 120 and the refrigerant air of the cooling hole 120 flows into the drying air of the dehumidifying rotor 200 To thereby provide a process air that is primarily cooled by heat exchange with the exhaust gas.

The first heat exchanger 300 is formed by laminating a plurality of heat transfer plates integrally formed with concavo-convex portions. The dry air of the dehumidification rotor 200 and the refrigerant air of the cooling port 120 are not mixed with each other but in a noncontact manner And flows through each of the flow passages while performing heat exchange only by the temperature difference.

At this time, the first heat exchanger (300) keeps refrigerant air of the cooling port (120) continuously flowing into the heat transfer plate side to be maintained in a cooled state, and the drying air of the dehumidification rotor (200) Respectively.

The first heater 400 includes:

And the waste heat air heated after heat exchange in the first heat exchanger 300 is heated again to flow into the dehumidification rotor 200 to directly heat the dehumidification rotor 200.

Here, the first heater 400 is connected to the first heat exchanger 300 through a duct, and the waste heat air heated after the heat exchange is introduced, and the waste heat air flowing into the first heater 400 is heated to heat the waste heat Zone 220 to directly heat the dehumidification rotor 200. [

At this time, the first heater 400 is connected to the first heat exchanger 300 by using the second branch 410, so that the waste heat air heated in the first heat exchanger 300 flows through the second branch 410 The first heaters 400 are connected to the first heaters 400 through the first heaters 400 to heat the first heaters 400, Or by using hot water of various waste heat, energy can be utilized efficiently.

The first humidifier 500 includes:

And a part of the process air to be primarily cooled by the first heat exchanger (300) is introduced to perform the first humidification to provide the humidifying air.

Here, the first humidifier 500 functions to humidify by supplying moisture to the introduced process air. The first humidifier 500 is connected to the first humidifier 500 through a first branch 510 A part of the process air that is primarily cooled by the first heat exchanger 300 may be introduced and the part of the process air of the first heat exchanger 300 may be humidified, The main flow passage, that is, the second heat exchanger 700 described later, is provided with humidifying air to be a refrigerant capable of performing secondary heat exchange with the process air.

At this time, the first humidifier 500 does not operate in a state where the basic cooling is performed by the first heat exchanger 300, and when the cooling of the lower humidifier 500 is required to be lower than the basic cooling, the first humidifier 500 is selectively operated So that the temperature can be lowered.

The second heat exchanger (700) comprises:

The humidifying air of the first humidifier 500 and the processing air of the first heat exchanger 300 are introduced into the first humidifier 500 and the second humidifier 500, respectively.

Here, the second heat exchanger 700 is formed by stacking a plurality of heat transfer plates integrally formed with the concavo-convex portions, wherein the processing air of the first heat exchanger 300 and the humidifying air of the first humidifier 500 are not mixed So that it can be cooled in a second order by performing only heat exchange by a temperature difference while flowing through each flow passage in a non-contact manner.

The second heat exchanger 700 allows the humidifying air of the first humidifier 500 to continuously flow into the heat transfer plate side to be maintained in a cooled state. When the process air of the first heat exchanger 300 passes between the heat transfer plates, Way flow path, it is possible to perform secondary cooling.

At this time, the second heat exchanger 700 does not operate when the first heat exchanger 300 performs the basic cooling, and when it requires cooling lower than the basic cooling, that is, when the first humidifier 500 The second heat exchanger 700 is connected to the first heater 410 by the third branch pipe 710, and the second heat exchanger 700 is connected to the first heater 410 by the third branch pipe 710 And the waste heat air is introduced into the first heater 410 after the heat exchange.

The second humidifier 800 includes:

And the second humidification is performed when the processing air to be secondarily cooled by the second heat exchanger 700 flows into the air supply mechanism 130.

The second humidifier 800 functions to humidify by supplying moisture to the process air. The second humidifier 800 is connected to the second heat exchanger 700 through the second heat exchanger 700, So that the process air of the second heat exchanger 700 is humidified and then flows into the air supply mechanism 130 side.

At this time, the second humidifier 800 selectively operates at a lower temperature than the basic cooling, further lowering the temperature further.

The second heater 600 includes:

The heating air selectively flowing into the air supply mechanism 130 is selectively heated to a high temperature and heated air is introduced into the air supply mechanism 130 to selectively perform heating.

Here, the second heater 600 is connected to the air supply mechanism 130 through the first heat exchanger 300, the second heat exchanger 700, the second humidifier 800, And does not operate in a situation where cooling is requested. In the case where heating is requested, the introduced process air is directly heated and supplied to the air supply device 130 so that heating can be performed.

At this time, the second heater 600 can utilize energy efficiently by using the hot water of the district heating or the hot water of the solar heat or various waste heat as the heat source.

The recirculation unit 900 includes:

The inlet port 110 is connected to the inlet port 110 by a conduit 910 and the waste heat of the outlet port 140 is introduced into the inlet port 110 to mix with the outside air. To perform preheating on the outside air.

The recirculation unit 900 is connected to the exhaust port 140 through a conduit 910 so that the exhaust port 140 communicates with the inlet port 110 through a space and the exhaust port 140 is connected to the center of the conduit 910. [ A circulation fan 920 for forcedly introducing the waste heat air to the suction port 110 side is provided.

At this time, the waste heat air flowing into the exhaust port 140 flows into the intake port 110 through the circulation fan 920 and is mixed with the external air by the intake fan 161 of the intake port 110, 1 region 150a, and the preheated air is supplied to the dehumidifying rotor 200 by the mixing action of the waste heat air and the outside air.

Accordingly, according to the present invention, since the recirculation unit 900 is added, the waste heat discharged from the outside is recovered while performing the heat exchange in the air conditioner 1, and the waste heat is recycled after mixing with the introduced outside air. It is possible to maximize the energy for operation of the air conditioner 1 by increasing the utilization efficiency.

Also, the recirculation unit 900 includes: A control unit for measuring the amount of external air inflow of the intake port 110 and the amount of waste heat air discharged from the exhaust port 140 and adjusting the recirculation amount of the recirculation unit 900 based on the measured values, (930).

The control unit 930 includes a first sensor 931 installed on an adjacent side of the intake port 110 and measuring the amount of external air introduced into the intake port 110 in real time; A second sensor 932 provided on the side of the exhaust port 140 for real-time measurement of waste heat discharge amount of the exhaust port 140; A first damper 933 installed in the suction port 110 to adjust an inflow amount of external air; A second damper (934) installed in the exhaust port (140) for controlling the waste heat air discharge amount; A third damper 935 installed in the conduit 910 to regulate the amount of recirculation and a second damper 933 disposed on the first damper 933 based on the values measured by the first sensor 931 and the second sensor 932. [ A second damper 934, and a third damper 935. The processor 936 controls the first damper 935, the second damper 934, and the third damper 935.

The first sensor 931 and the second sensor 932 are a type of air flow sensor and provide a measured value obtained by measuring the amount of air flow in real time to the processor 936.

The first damper 933, the second damper 934 and the third damper 935 are valves for controlling the flow rate of the air to be introduced. The first damper 933, the second damper 934 and the third damper 935 are electrically connected to the processor 936, It is a kind.

The processor 936 is provided in the air conditioner 1 and is a processing device capable of performing processes such as storage, analysis, calculation, and comparison of measured values. The processor 936 is a processing device that can be operated by the air conditioner 1 The flow rate of the appropriate air flow can be input numerically. The processor 936 is connected to the intake fan 161 and the exhaust fan 162 as well as the first damper 933, the second damper 934 and the third damper 935 to control the operation thereof.

That is, the inflow amount of the external air introduced through the inlet 110 is measured using the first sensor 931 and the inflow amount of the waste heat air discharged to the outlet 140 is measured using the second sensor 932, The second damper 934, the third damper 935, and the third damper 935 based on the value of the amount of air supplied to the chamber 100 and the amount of air circulated in the chamber 100, And the amount of air flowing into the chamber 100 and the amount of air flowing into the recirculation unit 900 are controlled to be constant by increasing or decreasing the inflow amount of the intake fan 161 and the exhaust fan 162 The efficiency of the air conditioner 1 is not lowered even if the waste heat recovery by the recirculation unit 900 is performed.

Hereinafter, the operation of the air conditioner having the waste heat reuse function according to the present invention will be schematically described.

First, when the air conditioner 1 of the present invention performs the cooling operation, when the outside air is introduced through the inlet 110, the moisture of the outside air in the heating zone 210 of the dehumidifying rotor 200 rotating at low speed The dehumidified air is dehumidified by the desiccant and the dehumidified air is heated by the dehumidifying rotor 200 in a heated state. The dried air is introduced into the first heat exchanger 300.

The dry air introduced into the first heat exchanger 300 provides the process air that is primarily cooled by heat exchange with the coolant air flowing through the cooler 120. The process air is supplied to the cooler 130 through the cooler 130, The waste heat after heat exchange in the first heat exchanger 300 flows into the first heater 400 to provide a heat source for heating the dehumidification rotor 200.

A part of the process air that has been heat-exchanged in the first heat exchanger 300 is introduced into the first humidifier 500 through the first branch 510 and the first humidifier 500 500 and the humidified air humidified through the first humidifier 500 is introduced into the second heat exchanger 700 while being humidified by the second humidifier 500 through the second cooled processing air by heat exchange with the processing air of the first heat exchanger 300 The waste heat after the heat exchange in the second heat exchanger 700 flows into the first heater 400 and the heat of the dehumidifying rotor 200 is heated Lt; / RTI >

Alternatively, when cooling at a lower temperature is required, the process air introduced into the second humidifier 800, which is secondarily cooled by the second heat exchanger 700, is supplied to the second humidifier 800 using the second humidifier 800, Thereby providing the processing air supplied to the air supply mechanism 130 with moisture, thereby providing lower-temperature processing air to perform cooling.

Alternatively, when heating is requested, the processing air flowing into the air supply mechanism 130 is heated to a high temperature by using the second heater 600, and then heated air is introduced into the air supply mechanism 130 to perform heating. The drying air having passed through the dehumidification rotor 200 in the state where the first heat exchanger 300, the second heat exchanger 700, the first humidifier 500, and the second humidifier 800 are not operated, Heating is performed by heating the second heater 600 without performing humidification to perform heating.

As described above. While the present invention has been particularly shown and described with reference to certain preferred embodiments thereof, it is to be understood that the terminology used herein is for the purpose of describing the present invention only and is not intended to limit the scope of the claims. But is not intended to,

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be easy for anyone to know.

One; An air conditioner 100; chamber
200; Dehumidification rotor 300; The first heat exchanger
400; A first heater 500; A first humidifier
600; A second heater 700; The second heat exchanger
800; A second humidifier 900; Recirculation unit

Claims (5)

As an air conditioner,
A chamber 100 provided with a suction port 110 through which external air is sucked, a cooling port 120 through which coolant air flows, a supply mechanism 130 for supplying process air, and an exhaust port 140 through which waste heat air is discharged;
The air in the inlet 110 and the air in the waste heat heated after heat exchange are respectively introduced into the air inlet 110 and the air inlet 110. The dehumidifying air is dehumidified by using a dehumidifying agent, A rotor 200;
The drying air of the dehumidification rotor 200 flows into the cooling air inlet of the cooling hole 120 and the refrigerant air of the cooling hole 120 flows into the drying air of the dehumidifying rotor 200 A first heat exchanger 300 for providing process air that is primarily cooled by heat exchange with the first heat exchanger 300;
And a first heater (400) for directly heating the dehumidification rotor (200) by flowing waste heat air heated in the first heat exchanger (300) after reheating to the dehumidification rotor (200)
And performing the cooling while the process air cooled through the first heat exchanger (300) is supplied to the outside by the air supply mechanism (130)
The inlet port 110 is connected to the inlet port 110 by a conduit 910 and the waste heat of the outlet port 140 is introduced into the inlet port 110 to mix with the outside air. Further comprising a recirculation unit (900) for performing preheating with respect to the outside air of the compressor
The recirculation unit 900 measures the amount of external air inflow of the intake port 110 and the amount of waste heat exhausted from the exhaust port 140 and adjusts the recirculation amount of the recirculation unit 900 based on the measured values Further comprising a control unit (930) for maintaining the heat exchange efficiency constant,
The controller 930 includes a first sensor 931 installed adjacent to the inlet 110 for measuring the amount of external air introduced into the inlet 110 in real time; A second sensor 932 provided on the side of the exhaust port 140 for real-time measurement of waste heat discharge amount of the exhaust port 140; A first damper 933 installed in the suction port 110 to adjust an inflow amount of external air; A second damper (934) installed in the exhaust port (140) for controlling the waste heat air discharge amount; A third damper 935 installed in the conduit 910 to regulate the amount of recirculation and a second damper 933 disposed on the first damper 933 based on the values measured by the first sensor 931 and the second sensor 932. [ The second damper 934, and the third damper 935. The air conditioner according to the present invention can be used in an air conditioner having a waste heat reuse function. The method according to claim 1,
A first humidifier (500) for performing humidification by performing a first humidification while a part of the processing air to be primarily cooled by the first heat exchanger (300) is introduced;
And a second heat exchanger (700) for supplying the humidified air of the first humidifier (500) and the processing air of the first heat exchanger (300) to the second heat exchanger Having an air conditioner. 3. The method of claim 2,
And a second humidifier (800) for performing second humidification when process air to be secondarily cooled by the second heat exchanger (700) flows into the air supply mechanism (130) Air conditioner having function. The method according to claim 1,
And a second heater (600) for selectively heating the process air introduced into the air supply mechanism (130) to selectively heat the air supplied to the air supply mechanism (130) . delete

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