KR101871381B1 - System for heat exchange - Google Patents

Abstract

The present invention relates to a dual-heat-exchange system for periodically switching an air supply port and an exhaust port, capable of preventing an exhaust part from being frozen during a winter season while improving heat exchange efficiency through direct contact with air. The dual-heat-exchange system includes: an air supply part; an air exhaust part; a damper for controlling an air flow direction to be changed periodically; air supply and exhaust parts for first and second air, in which air supply and exhaust are periodically switched; and first and second heat exchange parts. Accordingly, after direct heat exchange is performed with the first and second heat exchange parts as the air supply and exhaust parts for the first and second air supplies and exhausts the air, in order to periodically switch air supply and exhaust operations of the air supply part, which has supplied the air, and the exhaust part, which has exhausted the air, the damper is operated to control a flow of the air to perform the heat exchange, so that the air and the heat exchange parts make direct contact with each other to perform the heat exchange, thereby improving heat efficiency of the heat exchange. In addition, the air supply and exhaust parts for the first and second air perform the air supply and exhaust operations alternately and periodically by the air flow control of the damper, so that freezing and ruptures are prevented from occurring without installing a separate freeze prevention facility for preventing the freezing and the ruptures during the winter season, thereby reducing a cost due to the installation of the freeze prevention facility and reducing a cost for maintenance and repair.

Description

A dual heat exchange type heat exchange system that periodically exchanges air,

The present invention relates to a dual heat exchange type heat exchange system for periodically changing the air supply and exhaust airflow, which can prevent the freezing of the exhaust part in winter, while improving the heat exchange efficiency through direct contact of air.

Generally, in the residential space of a residence, or in a work space of a building such as an office or an office, the cooling of the summer and the heating of the winter are the main factors of energy consumption.

In recent years, the demand for energy for cooling and heating has been rapidly increasing due to the proliferation of residential space due to population growth and the increase of factory sites and offices due to industrial development.

Such a rapid demand for energy is driving up the price of fossil fuels such as oil and natural gas.

In the fields of agriculture, livestock industry and fishery industry, managers of facility farms and aquaculture companies are under the pressure of management due to rising cost of heating and cooling due to the increase of fossil fuel prices. In the field of manufacturing, The rise in production costs of products has caused many difficulties.

In addition, this energy overproduction phenomenon is a major factor of global warming due to environmental pollution caused by soot generated in the combustion process of fossil fuel.

Recently, the heat generated and recovered in the circulation process of the compression, evaporation, and condensation of the refrigerant is used to obtain the energy equivalent to the cooling and heating effect by combustion of the fossil fuel without causing pollution. , And the use of air conditioners that perform heating is becoming common.

On the other hand, in the above-mentioned air conditioner, the cooling coil, which is a heat exchanger, and water as a heat exchanging medium that flows inside the heating coil are frozen in the winter season when the outside air temperature drops below zero, and the volume expands, Therefore, there is a problem that the cooling coil and the heating coil of the heat exchanger are damaged to partially repair or replace the whole, thereby causing time and economic loss due to maintenance and exchange.

As means for solving this problem, means are provided for cooling the heat exchanger and for preventing the freezing of the heating coils.

(Patent Document 1) and Korean Utility Model Registration No. 20-227935 entitled "Device for preventing freezing of a radiator for an air conditioner" (Patent Document 2 ) And Korean Utility Model Registration No. 20-300908 entitled " Device for preventing freezing of heat exchanger for air conditioner "(patent document 3).

In consideration of the technical contents of Patent Document 1, a coil tube inlet and an outlet of a heat exchanger are connected to each other by an auxiliary pipe, and a temperature sensor, an electric heater, a circulation pump, a check valve and a control unit are provided in the auxiliary pipe. When the auxiliary pipe falls to below zero, the temperature sensor senses this and the electric heater and the circulation pump are operated and the check valve is opened. Therefore, the fluid inside the coil tube of the heat exchanger is heated and circulated to prevent the frost wave.

When a description of the technical contents of Patent Document 2 is examined, it is a structure in which a heater that operates by receiving a signal from a temperature sensor in the vicinity of the front of the heat exchanger is installed. When the outside air temperature falls below zero, the heater operates and the coil tube of the heat exchanger is frozen .

Also in the case of Patent Document 3, when a temperature sensor is provided on a coil tube constituted in a heat exchanger and the outside air temperature falls below zero, the heater is operated by the detection of the temperature sensor to dissipate heat to prevent the coil tube of the heat exchanger from being frozen .

When the outside temperature of the engine is lowered to minus zero, the temperature sensor senses the temperature of the outside of the engine and causes the heater to operate and generate heat to prevent the coil tube of the heat exchanger from being frozen. However, Considering that it is almost zero, the operation time of the heater is increased, and the consumption of electrical energy is rapidly increased, resulting in an increase in the economic burden.

As a means for solving such a problem, Japanese Patent No. 10-784771 entitled " Device and system for preventing freezing of an air conditioner having a vertical heat exchanger "(Patent Document 4) is provided.

When examining the technical content of the Patent Document 4, a plurality of coils are vertically arranged at regular intervals and connected to each of the upper and lower heads, and then the frame is assembled to constitute a cooling coil and a heating coil. And a solenoid valve controlled by a control unit to which a temperature sensor is connected.

Accordingly, when the air conditioner is stopped, moisture remaining in the vertically formed coil is firstly discharged. If moisture remains, if the vacuum removing side is opened, the moisture remaining in the coil is discharged to the outside by the air pressure, In addition, when the temperature sensor detects the water temperature remaining in the coil and the temperature is less than 1 ° C, the solenoid valve is fully opened to completely discharge moisture in the coil.

However, in the case of the apparatus of Patent Document 4, there is a fear of malfunction due to a complicated sensing means and apparatus such as a vacuum removing valve, a temperature sensor, and a solenoid valve. When the residual moisture is not completely discharged and remains in the coil It was also a concern of the frog.

Furthermore, since there is a need for additional means for preventing freezing, there is a problem that production cost and maintenance cost are separately generated.

According to an aspect of the present invention, there is provided a dual heat exchange type heat exchange system for periodically exchanging air supply and exhaust air according to the present invention, wherein air including cold heat and heat is directly brought into contact with a heat exchanger to perform heat exchange, There is provided a dual heat exchange type heat exchange system for periodically changing an exhaust port.

It is still another object of the present invention to provide an air supply unit and an air supply unit which periodically perform exhaust or air supply operations alternately through an air flow direction control, thereby preventing winter frost in winter.

The present invention is characterized in that the exhaust part of the first and second air and the air supply part perform heat exchange directly with the first and second heat exchange parts while air is supplied and exhausted, The damper is operated so that the operation is changed to control the flow of air so as to perform the heat exchange so that the air and the heat exchanging part are in direct contact with each other to perform heat efficiency, thereby increasing the efficiency of heat exchange.

Particularly, by controlling the airflow of the damper, the first and second air exhaust and air supply units alternately perform the exhaust and air supply operations alternately, It is a useful invention that can reduce the cost of installing the preventive facility and the cost of maintenance.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a dual heat exchange type heat exchange system for periodically changing a supply and exhaust port according to the present invention; FIG.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dual heat exchange type heat exchange system for periodically changing the air supply and exhaust airflow according to the present invention.
3 is a state diagram showing a state in which air flow is changed in a dual heat exchange type heat exchange system in which the air supply and exhaust air is periodically changed according to the present invention.

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

First, as shown in FIG. 1, the air supply unit 10 is installed in a room so as to receive external air.

The air supply unit 10 includes an air supply diffuser 11 installed in the room and an air supply fan 12 connected to the air supply diffuser 11 by an air supply line 13.

In addition, the air supply fan 12 may include a filter F, and the filter F may be a pre-filter or a medium filter.

Next, the air discharge unit 20 is installed in the room so as to discharge polluted air therein.

The air discharge unit 20 includes an air discharge diffuser 21 installed in the room and an exhaust fan 22 connected to the air discharge diffuser 21 by an exhaust line 23.

Next, the damper 30 is formed between the air supply unit 10 and the air discharge unit 20 to control the flow direction of the air.

Next, the exhaust and supply unit 40 of the first air is installed outdoors, and is coupled to the damper 30 to discharge the air from the room to the outside by the operation of the damper 30 And the air supply unit is configured to perform an air supply function that serves to supply outside air to the room by sucking the outside air.

Next, the exhausting and supplying unit 50 of the second air is installed outside the room. The damper 30 is coupled to the damper 30 and discharges the air from the room to the outside by the operation of the damper 30 And the air supply unit that serves to supply outside air to the room by sucking the outside air.

The first and second exhaust and supply units 40 and 50 are configured to perform different functions when the direction of air flow is controlled by the damper 30.

That is, when the air supply unit and the exhaust and supply unit 40 of the first air are connected by the damper 30 and the exhaust and supply unit 40 of the first air serve as an air supply unit, 20 and the exhaust and supply unit 50 of the second air are connected to each other so that the exhaust and supply unit 50 of the second air acts as an exhaust unit.

Next, the first heat exchanging part 60 is formed between the damper 30 and the exhausting and supplying part 40 of the first air to absorb the heat energy including the cold heat and the heat contained in the air when the air moves .

Next, the second heat exchanging unit 70 is formed between the damper 30 and the exhausting and supplying unit 50 of the second air to absorb the heat energy including the cold heat and the heat contained in the air when the air moves .

Hereinafter, the operation and effect of the dual heat exchange type heat exchanging system of the present invention, which periodically changes the supply and exhaust ports according to the present invention, will be described.

A dual heat exchange type heat exchange system (100) for periodically changing the supply and exhaust ports according to the present invention comprises a damper (30) for controlling the flow direction of air to improve heat exchange efficiency, It is possible to obtain the effect of preventing the freezing of the air, and in the case of the winter, the present invention will be described with reference to the ventilation using the present invention.

The above-described damper 30 has a conventional configuration capable of changing the direction of air flow.

2, the damper 30 includes an air supply unit 10, a damper 30, a first heat exchange unit 60, a first air exhaust and supply unit 40 for supplying air to the room, So that the flow of air is controlled so that the exhaust and supply part 40 of the first air acts as an air supply part.

At the same time, the damper 30 connects the air discharge unit 20, the damper 30, the second heat exchange unit 70, the second air discharge unit 50 and the second air discharge and supply unit 50, 50 control the flow of air so as to perform the role of the exhaust part.

At this time, the air supply unit 10 functions to allow the outside air to be introduced into the room by the air supply fan 12, and the air discharge unit 20 is always operated by the air discharge fan 22, So that it can be discharged.

The first outside air flowing through the exhaust and air supply unit 40, the first heat exchange unit 60, the damper 30 and the air supply unit 10 as described above has a state of having a cold state As shown in FIG.

The air discharged through the air discharge unit 20, the damper 30, the second heat exchanger 70, and the second air discharge and air supply unit 50 installed in the room is in a state of having a high temperature, The heat is exchanged in the second heat exchanger (70) before discharge, and then the air is discharged to the outside.

3, after the air flow is maintained as described above, the damper 30 is operated after a predetermined time, for example, 60 seconds, to discharge the air from the second air supply and exhaust unit 50, the second heat exchange unit 70, the damper 30, and the air supply unit 10 in this order.

Then, the air supply and exhaust unit 50 of the air supply unit 12 constituting the air supply unit 10 switches from the role of the exhaust unit to the role of the supply unit, Air is sucked in.

At this time, as described above, the outside air including the cold heat is heat-exchanged in the immediately preceding stage, and the heat is exchanged through the second heat exchanger 70 having the heat, so that the air including the heat is supplied to the room , The damper 30 periodically controls the direction of air flow so that heat exchange can be performed.

Particularly, since the outside air and the room air directly contact the first and second heat exchange units 60 and 70 to perform heat exchange, the heat exchange efficiency is enhanced.

In the meantime, the present invention continuously controls the air flow direction of the damper 30 as described above, so that the first and second air exhaust and supply units 40 and 50 installed outside are periodically connected to the exhaust unit and the supply unit As well.

In this process, the air including the heat and the air including the cold heat periodically move in the exhaust and supply units 40 and 50 of the first and second air.

Therefore, even when the external temperature is extremely low, air including heat is periodically transferred to the exhaust and supply units 40, 50 of the first and second air, so that it is possible to prevent the freezing .

As a result, it is possible to reduce costs due to the installation of separate frost prevention facilities and to reduce maintenance costs.

Although the preferred embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. Of course.

10:
11: air supply diffuser 12: air supply fan 13: air supply line
20:
21: air discharge diffuser 22: exhaust fan 23: exhaust line
30: Damper
40: exhaust and supply part of the first air
50: Exhaust and supply part of the second air
60: first heat exchanger
70: second heat exchanger
100: Dual heat exchange type heat exchanger system that periodically changes the air supply and exhaust

Claims (1)

An air supply part 10 composed of an air supply diffuser 11, an air supply fan 12 and an air supply line 13 for supplying air into the room;
An air discharge portion 20 consisting of an air discharge diffuser 21, an air discharge fan 22 and an air discharge line 23 for discharging air to the outside of the room;
A damper 30 connected to the air supply unit 10 and the air discharge unit 20 to control a flow direction of the air;
A first air exhaust and supply unit 40 connected to the air supply unit 10 or the air discharge unit 20 by the damper 30 to supply outside air or discharge internal air;
A second air exhaust and supply unit 50 connected to the air supply unit 10 or the air discharge unit 20 by the damper 30 to supply outside air or discharge internal air;
A first heat exchange unit 60 formed between the damper 30 and the exhaust and supply unit 40 of the first air and connected to the air supply unit 10 or the air discharge unit 20 by the damper 30, ;
A second heat exchange unit 70 formed between the damper 30 and the exhaust and air supply unit 50 of the second air and connected to the air supply unit 10 or the air discharge unit 20 by the damper 30, ; And,
The damper 30 connects the air supply unit 10, the damper 30, the first heat exchange unit 60, the first air exhaust unit and the air supply unit 40 for supplying air to the room, The damper 30, the second heat exchanging part 70, the exhausting and supplying part 50 of the second air, and the exhausting and supplying part 40 of the exhausting part 40, And controls the flow of the air so that the exhaust and supply unit 50 of the second air performs the role of the exhaust unit. After a predetermined time, the exhaust and supply unit 50 of the second air, the second heat exchange unit 70 The damper 30 and the air supply unit 10 are operated in such a manner that the flow of the air changes in this order so that the exhaust and supply unit 50 of the second air is switched from the role of the exhaust unit to the role of the supply unit And the exhaust and the air supply unit 40 of the first air are connected to the air discharge unit 20, the damper 30, the second heat exchange unit 70, Role The damper 30 is operated so as to periodically control the flow direction of the air so that the first and second air exhaust and supply units 40 and 50 alternately perform the role of an exhaust unit or an air supply unit, And a second heat exchanging type heat exchanger for periodically changing the exhaust air, characterized in that air is directly exchanged with the first and second heat exchanging units (60, 70) to improve the heat exchanging efficiency, system.

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