KR20030033875A - Ventilator with heat exchanging function - Google Patents

Abstract

PURPOSE: An air conditioner for heating and cooling with waste heat recovery function is provided to reduce energy consumption. CONSTITUTION: A waste heat recovery part(10) is formed to recover and circulate indoor air introduced into an exhaust part(110) by opening and closing of a bypass damper(12) formed on the middle of an air conditioner(100) to an air supply part(120). A rotary type heat exchanger(20) is formed on one side of the waste heat recovery part between dampers(130,140) to spread over the air supply part and the exhaust part. The waster heat recovery part collects waste heat to the air supply part. The rotary type heat exchanger transmits remaining waste heat to outside air introduced from the outside.

Description

Ventilator with heat exchanging function with waste heat recovery function

The present invention relates to a combined air-conditioning device for cooling and heating, and more particularly, to recover the waste heat discarded to the outside, and the remaining waste heat is compensated to the outside air introduced from the outside by a heat exchange action of the rotary heat exchanger to a room temperature. By providing a waste heat recovery system to be resupply, the present invention relates to a cooling and heating air conditioner having a waste heat recovery function that maximizes energy savings and economic benefits from cooling and heating operations.

In the current underground station and underground shopping malls with over 2,000㎡, passenger terminals (cars, ports, airports), libraries, art galleries, museums, general hospitals, welfare facilities (children, the elderly), Legislative notice announced by the Ministry of Environment announced in the Act on Amendment to the Indoor Air Quality Control Act, which extends to indoor parking lots and requires mandatory use of building materials that emit harmful substances (asbestos, VOCs, etc.) and the measurement and notification of pollution levels of hazardous substances before moving in. It is reported in -83, and if this legislation is implemented, mandatory provision of air purifying and ventilation equipment for all expanded facilities will greatly increase the supply rate of air purifiers and ventilation equipment in general facilities. The consumption rate is also expected to rise significantly.

Recently, energy consumption used in residential spaces and industrial sites has been increasing rapidly. In Korea, an energy consumption nation that relies on oil and energy resources abroad, even when awareness of energy conservation is rapidly spreading. Nevertheless, the current level of plate heat exchanger efficiency is only 40-50%, and technical complements to air purification and ventilation facilities that can exhibit higher thermal efficiency should be raised as a challenge.

Conventionally, an air conditioner and an air conditioner (air conditioner) that combines air conditioning and cooling and heating are largely configured to have upper and lower compartments for controlling air volume by dampers, respectively, and are driven by motors in the front and rear exhaust ports and the air inlets, respectively. An exhaust fan and an air supply fan are installed, and the air supply fan is composed of a cooling and heating coil and a humidifier unit for raising the outside air to a predetermined temperature. In addition, pretreatment filters are respectively configured at the inlet of the outside air to catch foreign substances contained in the outside air.

The conventional air-conditioning combined air-conditioning device configured as described above is introduced by operating a cooling and heating coil as much as the temperature difference when a large temperature difference occurs between the room temperature and the outside temperature when ventilating the room that is operated by cooling and heating in summer or winter. Since the outside air must be heated and cooled to reach the set temperature of the indoor standard, there is a problem in that it is not economical because the increase in operating cost and energy consumption increase. As such, the conventional air conditioner has an inefficient structure that simply ventilates the indoor air and the outside air, so that it is not possible to recover the waste heat that is discarded to the outside.

The present applicant intends to use a rotary heat exchanger in the existing air-conditioning combined air-conditioning equipment to minimize the heat loss by actively recovering the waste heat discarded to the outside. This type of heat exchanger has superior thermal efficiency compared to the existing domestic plate heat exchanger efficiency of 40-50%, and is already heated by the US Safety Standard (UL), CSA (Confederate States of America) and the American Society of Refrigeration and Air Conditioning (ASHRAE). This product is adopted as an internationally certified heat exchanger material (polymer film), and its heat exchanger efficiency is more than 90-95% compared to the existing metal material or synthetic fiber. have.

The present invention constitutes a waste heat recovery unit capable of opening and closing the air supply unit and the exhaust unit by a damper in a conventional air-conditioning combined use air conditioner, and recovers the remaining heat except the part of the indoor air exhausted to the air supply unit and recycles a series of recycled air. While minimizing heat loss through waste heat recovery system, one side of this waste heat recovery part consists of a rotary heat exchanger with excellent heat recovery rate, so that the waste heat of the recovered indoor air and the outside air introduced through one side air supply are smooth and uniform. By causing the waste heat temperature to be efficiently transferred to the outside air to achieve an efficient thermal equilibrium, the outside air is compensated to an elevated temperature to some extent and moreover, the outside air received the temperature is mixed with the indoor air recovered to the air supply side, and the temperature is again Energy savings and economic benefits from cooling and heating operations Be so.

1 is a front sectional view showing the internal structure and structure of an air conditioner according to the present invention;

2 is a side cross-sectional view of an air conditioner according to the present invention;

3 is a front configuration diagram of a rotary heat exchanger according to the present invention;

Figure 4 is a side configuration diagram of a rotary heat exchanger according to the present invention

5 is an overall flow chart of the air conditioner according to the present invention.

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

10: waste heat recovery unit 12: bypass damper

20: rotary heat exchanger 22: rotary disc wheel

23: shaft support 24: support frame

26: drive belt M: motor

100: Combined air conditioning and heating

The present invention is configured by the damper (130) 140, the exhaust unit 110 and the air supply unit 120 is configured to enable the adjustment of the supply, exhaust amount up and down compartments, the exhaust port 170 and the air supply port before and after An exhaust fan 150 and an air supply fan 160 respectively driven by the motor M are installed at the 180, and the cooling and heating coils 200 and 210 and the humidifier 220 are formed inside the air supply. In the air-conditioning apparatus 100 for both cooling and heating, the waste heat recovery unit 10 having the bypass damper 12 is formed at the inner central portion of the device, and the indoor air at the exhaust side is controlled by controlling the opening and closing of the bypass damper. The heat exchanger 20 is configured to be circulated and circulated to the air supply side, while the one side of the waste heat recovery unit 10 is disposed at the center between the dampers 130 and 140 so as to span both sections of the air supply and exhaust unit. It is characterized by.

This rotary heat exchanger (20) product, made of polymer film, is imported and used by a contract with United States AIRXCHANGE Co., Ltd. and Union-Tech Co., Ltd. There is this. As shown in FIG. 3, the rotary heat exchanger 20 has a predetermined width in a circular shape by winding a polymer film composed of a predetermined width in a roll shape, and then radially divided into several parts to correspond to this size. This matrix body is divided into a circular disk wheel 22 which is composed of a plurality of matrix bodies of units in the shape of an arc shape respectively accommodated in a fixed frame, and is radially divided into a plurality of parts and a bearing housing having a rotating shaft hole in the center. The rotary disc wheels 22 are mounted on and detached from each other so as to correspond to the predetermined spaces, and the central rotary shafts of the shaft supports 23 and 23 'are formed before and after the rectangular plate-shaped support frame 24. It is constructed to be rotatable, supported and rotatable, and connected to the outer surface of the rotary disc wheel 22 by a drive belt 26 to the motor M mounted on one side of the support frame to rotate. And it becomes commercialized by various standardized them by size.

Thus, when assembling the rotary heat exchanger 20 supported by the support frame in the interior of the air conditioner 100 for both cooling and heating, the exhaust unit 110 and the air supply unit 120 are disposed on one inner wall surface of the waste heat recovery unit. A space penetrated so as to span both sections is provided, and the support frame 24 is intimately sandwiched in the vertical direction in this space, and then simply attached and fixed by molding along the contact portion of the exterior.

The air supply unit 180 and the exhaust port 170 of the air-conditioning unit for both cooling and heating are kept airtight using an airtight damper to prevent air from leaking, and the opening and closing of the damper is controlled by the control of an external control box. It is configured to control the supply and exhaust volume.

And the inside of the air supply unit maximized the insulation by using an Atyrone material, the pre-treatment filter 230 configured in the air supply unit is primarily to clean the coarse dust, the post-treatment filter to filter out the finer particles dust do. In addition, since the humidity of the outside and indoor of the winter season is low, the humidifier unit 220 is installed and configured at the rear of the cooling and heating coils 200 and 210 so as to maintain a constant humidity, and connected to an external water supply source and a pipe. It is made to continuously supply the humidifying water, the air passing through the cooling, heating coil is maintained at a humidity suitable for the indoor temperature standard is supplied to the room by the air supply fan 160.

Although not shown in the drawings, the ducts connected to the inside and the outside of the air supply unit 180 and the exhaust port 170 configured before and after are respectively installed and fixed.

Hereinafter will be described with reference to Figures 1 to 3 the action and the effects of the combined air conditioning and heating according to the present invention.

According to the present invention, the bypass damper 12 of the waste heat recovery unit 10 is completely closed in the season (spring and autumn) that does not require cooling and heating, and the exhaust unit 110 and the air supply unit 120 are disposed on the side. Each configured damper 130, 140 is completely opened to ventilate the internal air and the external air 100%, in this case it will not be necessary to operate the cooling, heating coils 200, 210.

First, Figure 3 is an overall flow chart of the air-conditioning combined air conditioning apparatus of the present invention, the room setting temperature is +22 ℃, the external temperature is shown as an example of +2 ℃, the present invention refers to this embodiment This will be described.

When operating the air conditioner in the summer or winter in the cooling and heating, the dampers 130 and 140 respectively configured on the exhaust unit 110 and the air supply unit 120 side is completely closed and the middle portion of the waste heat recovery unit 10 The configured bypass damper 12 is opened. In addition, the rotary disc wheel 22 of the rotary heat exchanger 20 receives the drive of the motor M by the drive belt 26 connected to be wrapped around its outer surface, and gradually rotates to one side to exhaust the exhaust part 110. The state of forming a circular operation to reciprocate both sections of the air supply unit 120 side.

The indoor air and external air are sucked through the exhaust port 170 and the air supply port 180 by the rotational force of the exhaust fan 150 and the air supply fan 160 under the indoor and outdoor temperature conditions as described above. Purified by 230, the air volume of the indoor air is supplied to 9,600㎥ / h, but the air flow of 2,400㎥ / h to the rotary heat exchanger 20 while passing into the waste heat recovery unit 10, the bypass damper In (12), the air volume of 7,200 m 3 / h passes, that is, 75% of indoor air is recovered to the air supply unit 120 through the bypass damper 12. Of course, the remaining 25% will pass through the polymer film layer of the rotary heat exchanger (20). This is possible by controlling the opening of the bypass damper 12 so that the amount of air recovered to the air supply unit 120 is larger than the amount of air introduced into the rotary heat exchanger, and the discarded room temperature is maintained at + 22 ° C. .

On the other hand, since only the amount of air exhausted from the room to suck the outside air supply fan 160 is operated with less rotational force than the exhaust fan 150 to introduce external air (+2.0 ℃) to 2,400㎥ / h, this inflow Since the damper 140 is closed, the external air passes through the polymer film layer of the rotary heat exchanger. At this time, as shown in FIG. 3, the surface layer structure of the polymer film is enlarged. Uniform heat exchange is achieved through a plurality of perforations in the surface of the layer while passing through the gap between the narrow layers of the mattress body in the form of densely stacked form, and due to the nature of the polymer film, the thermal waste of the room is rapidly accumulated on the surface of the film. The heat balance is quickly delivered to the outside air passing through, as well as the rotary heat exchanger 20 is driven by a drive belt 26 wrapped around its outer surface. A uniform heat exchange action is induced due to the rotation operation to and from a transmission received by the rotation drive force to one side and a positive period of the (M).

At this time, the external air, which has been compensated to some degree of the temperature of the discarded indoor air, is raised to a temperature of + 18 ° C. and passes through the rotary heat exchanger 20. Furthermore, the external air is supplied to the air supply part through the bypass damper 12 of the waste heat recovery unit. In the process of mixing with the room air temperature of + 22 ° C, the temperature is compensated again and rises to + 21 ° C to achieve a continuous circulation of 9,600㎥ / h of air. In this case, in order to supply external air to the room temperature set to + 22 ° C, the heating coil may be operated to increase only + 1 ° C, thereby greatly reducing power consumption.

As described above, the present invention actively recovers 70% of the waste heat discarded indoors by the waste heat recovery unit 10 toward the air supply unit 120 by controlling the opening and closing of the bypass damper 12, while maintaining thermal efficiency. Through this excellent rotary heat exchanger 20 to achieve an efficient heat exchange with the remaining 30% of the waste heat discarded to the outside and the external air introduced from the outside to compensate the temperature to some extent by reducing the temperature deviation, By providing an efficient waste heat recovery system in which the temperature is raised again in the process of remixing with the waste heat recovered to the air supply unit 120 side, the power loss according to the operating cost is greatly reduced to save energy.

The present invention does not need to install a separate recovery device that can recover the waste heat, the installation space is reduced, as well as easy to replace and clean the rotary heat exchanger. In particular, the energy loss is minimized by the efficient heat recovery system waste heat, it is possible to effectively reduce the operating costs due to the initial equipment cost and the operation of the cooling, heating coils can maximize the user's benefits.

Claims (1)

The exhaust unit 110 and the air supply unit 120 configured to enable the control of the supply and discharge amount by the dampers 130 and 140 are configured to be upper and lower compartments, and the front and rear exhaust ports 170 and the air supply unit 180 are provided. An exhaust fan 150 and an air supply fan 160 driven by a motor M are installed in the air supply, respectively, and the cooling and heating coils 200 and 210 and the humidifier 220 are formed inside the air supply. In the air-conditioning apparatus for combined heating (100), the waste heat recovery unit (10) including the bypass damper (12) is formed at the inner central portion of the device, and the indoor air at the exhaust side is supplied according to the control of opening and closing of the bypass damper. The heat exchanger 20 is configured to be circulated and circulated, and the one side of the waste heat recovery unit 10 is configured to include a rotary heat exchanger 20 at the center between the dampers 130 and 140 so that both sections of the supply and exhaust portions are covered. Combined air conditioning and heating system with waste heat recovery function.