KR102229506B1 - Cooling and Heating System for Ventilation in the Interior - Google Patents

Abstract

The present invention relates to an indoor ventilation combined cooling and heating system that is installed in a residential space such as apartments, houses, and condos to keep the room in a pleasant state according to the season. The heat pump is operated by the exhausted indoor air while always maintaining a comfortable state, so that the indoor cooling and heating as well as hot water can be performed.
To this end, the present invention is installed in the intake pipe 10 and the exhaust pipe 20 in which the inlet 11 and the exhaust port 21 are installed so as to communicate with the outside, and the intake pipe 10 and the exhaust pipe 20, respectively. A first intake fan 12 and an exhaust fan 22 for forcibly inhaling or discharging air, and each installed in the intake pipe 10 and the exhaust pipe 20 to filter odors and dust contained in the air. , 2 filters 13, 23, the intake pipe 10 and the exhaust pipe 20 are installed to be accommodated to allow heat exchange between intake air and exhaust air, a heat recovery unit 30, and a main body ( 1) a heat pump 40 that heats or cools the circulating water by exchanging heat with the air exhausted to the outdoors, and the circulating water connected to the heat pump 40 and the first circulation pipe 51 A hot water tank 50 for supplying water, a circulation pump 52 installed in the first circulation pipe 51 to circulate circulating water, and an intake pipe 10 located at a rear end of the heat recovery unit 30 It is connected to both ends of the cooling/heating unit 60 installed in the first circulation pipe 51 and supplies hot water or cold water to the cooling/heating unit 60 according to the driving of the first pump 62 to provide cooling, The second circulation pipe 61 for heat exchange in the heating unit 60, and a three-way side installed at the connection portion between the first and second circulation pipes 51 and 61 to switch the flow path of the circulating water ( It is characterized by consisting of a 3-way valve) (53).

Description

Cooling and Heating System for Ventilation in the Interior}

The present invention relates to an indoor ventilation combined cooling and heating system installed in a residential space such as apartments, houses, condos, shopping centers, schools, etc. to keep the indoor in a pleasant state according to the season. Ventilation is performed according to the pollution level to keep the indoor air in a comfortable state, and at the same time, the heat pump is operated by the exhausted indoor air to allow indoor cooling and heating as well as hot water supply. , It relates to the heating system.

In general, in a residential space of a house, an officetel, or a work space of a building such as an office or school, cooling in summer and heating in winter are the main factors of energy consumption.

In recent years, the demand for energy required for cooling and heating is rapidly increasing due to the expansion of residential spaces due to the increase of population and the increase of factory sites and offices due to industrial development.

This rapid demand for energy is acting as a factor that increases the price of fossil fuels such as oil and natural gas.

In particular, in the fields of agriculture, livestock and fisheries, facility farmers and managers of aquaculture industry are under management pressure due to the rise in cooling and heating costs due to the increase in the price of fossil fuels. Due to the rise, the production cost of the product has risen, causing many difficulties.

In addition, this energy over-consumption phenomenon acts as a major factor in global warming due to environmental pollution caused by soot generated in the combustion process of fossil fuels.

In recent years, it uses the heat generated and recovered in the circulation process of compression, evaporation, and condensation of refrigerant so that it can obtain energy almost equal to the cooling and heating effect of fossil fuel combustion without causing pollution. The use of air conditioners to perform heating is common.

On the other hand, in the winter when the outside air temperature drops below zero, the air conditioner as described above expands in volume while the cooling coil as a heat exchanger and the water as the heat exchange medium flowing inside the heating coil are frozen. This volume expansion acts as a pressure. Accordingly, there is a problem in that the cooling coil and the heating coil of the heat exchanger are damaged, so that partial repair or total replacement is required, resulting in time and economic loss due to repair and replacement.

The air conditioner of this structure has the above problems and is capable of cooling and heating the room to some extent, but it does not have the function of ventilating the indoor air or controlling the temperature of the incoming outdoor air, so a separate purchase of an expensive air purifier, etc. Therefore, it is purifying the indoor air.

(Prior technical literature)

(Patent Document 0001) Republic of Korea Utility Model Publication 20-2015-0001662 (published on May 4, 2015)

(Patent Document 0002) Registered Korean Patent Publication No. 10-1371641 (registered on February 26, 2014)

However, these conventional indoor ventilation, cooling, and heating devices perform separate functions, so not only are economical burdens associated with the purchase of devices, but also have many difficulties in their maintenance.

The present invention was devised to solve such a problem in the related art, and the indoor air is always kept in a comfortable state by ventilating according to the pollution level of the room, and at the same time, the heat pump is operated by the exhausted indoor air. Its purpose is to provide a cooling and heating system for indoor ventilation that enables not only cooling and heating, but also hot water supply.

According to an aspect of the present invention for achieving the above object, an intake pipe and an exhaust pipe provided with an inlet port and an exhaust port through the outside, and an intake fan installed at each of the intake pipe and the exhaust pipe to forcibly inhale or discharge air And an exhaust fan, first and second filters respectively installed in the intake pipe and the exhaust pipe to filter odors and dust contained in the air, and the intake pipe and the exhaust pipe are installed to receive heat of the intake air and the exhaust air. A heat recovery unit for exchange, a heat pump installed inside the main body to heat or cool circulating water by exchanging heat with air exhausted to the outside, and circulating water connected to the heat pump through a first circulation pipe. A hot water tank for hot water supply, a circulation pump installed in the first circulation pipe to circulate circulating water, a cooling and heating unit installed in an intake pipe positioned at a rear end of the heat recovery unit, and both ends of the first circulation pipe It is connected to the second circulation pipe to supply hot or cold water to the cooling/heating unit according to the driving of the first pump to exchange heat in the cooling/heating unit, and installed at the connection part of the first and second circulation pipes. Thus, there is provided a cooling and heating system for indoor ventilation, characterized in that it consists of a 3-way valve that switches the flow path of circulating water.

The present invention has several advantages as follows.

First, when fresh air from outside is introduced for indoor cooling and heating, about 30% of the contaminated air from the kitchen and bathroom is discharged to the outside through the exhaust pipe, and 70% of the indoor air is Since it is circulated through the indoor air circulation pipe, it is possible to keep the indoor air in a comfortable state while minimizing heat loss.

Second, the refrigerant is heated or cooled using the heat of the indoor air exhausted from the heat pump to exchange heat with the circulating water to perform indoor cooling and heating, thus minimizing the use of fossil fuels while minimizing the use of fossil fuels. Heating becomes possible.

Third, since the circulating water in the hot water tank can always be maintained at a constant temperature, hot hot water can be used in the kitchen or bathroom not only in winter but also in summer.

1 is a block diagram showing a ventilation combined cooling and heating system of the present invention
2 is a circuit diagram showing the configuration of the present invention
3 is a circuit diagram showing an indoor ventilation state
4 is a circuit diagram showing a state in which indoor air cooling and heating are performed
5 is a circuit diagram showing a state in which floor heating in the room is performed
6 is a circuit diagram showing a state in which hot water is performed

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. The present invention may be implemented in various different forms and is not limited to the embodiments described herein. It should be noted that the drawings are schematic and have not been drawn to scale. Relative dimensions and ratios of parts in the drawings are exaggerated or reduced in size for clarity and convenience in the drawings, and any dimensions are merely exemplary and not limiting. In addition, the same reference numerals are used to indicate similar features to the same structure, element, or part appearing in two or more drawings.

1 is a block diagram showing a cooling and heating system for both ventilation and heating of the present invention, and FIG. 2 is a circuit diagram showing the configuration of the present invention. 10) and an exhaust pipe 20, an intake fan 12 and an exhaust fan 22 that are respectively installed in the intake pipe 10 and the exhaust pipe 20 to forcibly inhale or discharge air, and the intake air First and second filters 13 and 23 respectively installed in the pipe 10 and the exhaust pipe 20 to filter odors and dust contained in the air, and the intake pipe 10 and the exhaust pipe 20 A heat recovery unit 30 that is installed to be accommodated so that heat exchange between intake air and exhaust air occurs, and a heat recovery unit 30 installed inside the main body 1 to heat or cool the circulating water by exchanging heat with the air exhausted to the outside. A heat pump 40, a hot water tank 50 connected to the heat pump 40 and the first circulation pipe 51 to supply circulating water, and the first circulation pipe 51 to supply circulating water. It is connected to both ends of the circulation pump 52 to circulate, the cooling/heating unit 60 installed in the intake pipe 10 located at the rear end of the heat recovery unit 30, and the first circulation pipe 51 A second circulation pipe 61 for supplying hot or cold water to the cooling/heating unit 60 according to the driving of the first pump 62 so that heat exchange is performed in the cooling/heating unit 60, and the first , It consists of a three-way valve 53 installed at the connection part of the two circulation pipes 51 and 61 to switch the flow path of the circulating water.

At this time, the heat recovery unit 30 is installed to accommodate the intake pipe 10 and the exhaust pipe 20 so that heat exchange between the intake and exhaust air is performed. In one embodiment of the present invention, a plate-type heat exchanger is applied. , It is understandable that it can be applied in various forms by experts in the relevant field.

The heat pump 40 applied to the present invention includes an outdoor heat exchanger 41 that is installed toward the outdoor side and serves as a condenser or evaporator, and an indoor heat exchanger 41 that is installed indoors and serves as an evaporator or condenser. The exchanger 42, the compressor 43 that compresses and circulates the refrigerant, and the refrigerant compressed by the compressor circulate to the outdoor heat exchanger 41 or the indoor heat exchanger 42 according to the type of cycle. It is composed of a four-way valve 44 for switching the flow path so as to be performed, and an expansion valve 45 installed on the circulation pipe 46 for adiabatic expansion of the condensed refrigerant at low pressure.

In addition, since there is no need to adjust the temperature of the outside air in spring and autumn when the temperature of the outside air is comfortable, the air flowing into the room through the intake pipe 10 is configured to be directly introduced without passing through the heat recovery unit 30.

That is, the bypass pipe 14 is installed on both sides of the heat recovery unit 30 installed in the intake pipe 10 and the exhaust pipe 20 so as to communicate with the intake pipe 10, and the bypass pipe 14 In summer and winter, the damper 15 is installed to open and close, so that the air flowing in through the intake pipe 10 passes through the heat recovery unit 30 by closing the damper 15 in summer and winter when the temperature of the outside air is high or low. As it is introduced, heat exchange with exhaust air is made, and in relatively cool spring and autumn, the damper 15 is opened so that external air is directly introduced into the room through the bypass pipe 14.

An indoor air circulation pipe 31 for circulating indoor air is installed to be connected to an intake pipe 10 connected to the rear end of the heat recovery unit 30, and the indoor air circulation pipe 31 has air circulating indoors. A third filter 32 is installed that filters foreign substances such as odors and dust contained in the inside, and at this time, the air volume of the intake fan 12 is set larger than the air volume of the exhaust fan 22, Through the exhaust pipe 20, 30% of contaminated air is exhausted, and 70% of indoor air is circulated through the indoor air circulation pipe 31.

When performing indoor ventilation, air from places where pollutants exist, such as kitchens and bathrooms, is discharged to the outside, and uncontaminated indoor air such as living rooms and rooms is circulated through the indoor air circulation pipe 31, It is to be able to increase the thermal efficiency.

A third circulation pipe 63 is further connected to the second circulation pipe 61, and a second pump 64 is installed in the third circulation pipe 63. Alternatively, indoor heating is performed by circulating cold water through the radiator or the floor pipe 65.

Accordingly, it is possible to maximize the indoor cooling and heating efficiency.

The third circulation pipe 63 connected to the radiator or the bottom pipe 65 is connected to the second circulation pipe 61 by an extension pipe 66, and the storage tank 70 in which hot or cold water is stored in the extension pipe 61. ) Is installed, and a check valve 67 is installed in the extension pipe 66 adjacent to the second circulation pipe 61.

This is to make it possible to continuously perform indoor cooling and heating while circulating cold water or hot water in the storage tank 70 even if the hot water supply mode is executed as needed.

A preheating heater 16 for preheating the intake air by generating heat by power is installed in the intake pipe 10 located at the front end of the heat recovery unit 30, and the first circulation pipe 61 has a heat pump 40 When the temperature of the circulating water that is heat exchanged by) is low, an auxiliary heater 68 for heating the circulating water is installed.

In the drawings, reference numeral 80 denotes a blowing fan that cools the heat exchanger 41 on the outdoor side of the heat pump 40, and 90 denotes a bathroom to which the hot water pipe 91 is connected.

The operation of the present invention will be described as follows.

3 is a circuit diagram showing an indoor ventilation state. When the exhaust fan 22 installed in the exhaust pipe 20 is driven, odors generated from kitchens and bathrooms are discharged to the outside through the exhaust pipe 20, as described above. Likewise, in the process of discharging indoor air to the exhaust pipe 20, the intake fan 12 installed in the intake pipe 10 is driven, so that fresh air from the outside flows into the room through the intake pipe 10, and the first filter ( After the pollutant is removed by 13), it passes through a heat recovery unit 30 such as a plate heat exchanger, exchanges heat with exhaust air, and then is supplied to the room.

At this time, in the summer season, the temperature of the exhausted indoor air is low, so hot outside air passes through the heat recovery unit 30, and the temperature drops due to heat exchange with the exhaust air, and on the contrary, in winter, the exhausted air is exhausted. The temperature of the indoor air is high, so that the cold outside air passes through the heat recovery unit 30, and the temperature rises due to heat exchange with the exhaust air and is supplied to the room.

However, in the case of spring and autumn when the temperature of the outside air is cool, the intake fan 12 and the exhaust fan 22 are driven with the damper 15 installed in the bypass pipe 14 open for indoor ventilation. Ventilation is performed.

Therefore, heat exchange between exhaust air and intake air is not performed in the heat recovery unit 30.

4 is a circuit diagram showing a state in which indoor air cooling and heating are performed, and indoor ventilation is performed in the same manner as in the ventilation mode as described above, and about 70% of indoor air is circulated through the indoor air circulation pipe 31 The process of doing is added.

At this time, when the outside air temperature flowing into the intake pipe 10 is -15°C or less, it is more preferable to heat the incoming air by applying power to the preheating heater 16 installed in the intake pipe 10 to increase the heating effect. desirable.

At the same time, when the heat pump 40 is operated and the circulation pump 52 installed in the first circulation pipe 51 is operated, the outdoor heat exchanger 41 acting as a condenser is exhausted through the exhaust pipe 20. After the refrigerant exchanges heat by the exhaust air, heat exchange with the circulating water is performed in the indoor heat exchanger 42 serving as an evaporator to increase the temperature of the circulating water.

At this time, the hot water supply mode is off, so that the flow path of the three-way side 53 passes through the second circulation pipe 61, and the first pump 62 installed in the second circulation pipe 61 drives the circulating water. The temperature is increased by exchanging heat with air circulating through the indoor air circulation pipe 31 while passing through the cooling/heating unit 60.

In this way, the circulating water obtained by exchanging heat with the air circulating in the room in the cooling and heating unit 60 is recovered to the indoor heat exchanger 42 by driving the circulation pump 52 installed in the first circulation pipe 51. Heat exchange with the refrigerant increases the temperature of the outside air entering the room.

However, in the case of indoor cooling, the heat pump 40 is driven in reverse to cool the circulating water as the outdoor heat exchanger 41 acts as an evaporator and the indoor heat exchanger 42 acts as a condenser. Since it is possible to cool the outside air flowing into the intake pipe 10, it is possible to perform indoor cooling.

As described above, when heating or cooling the room, ventilation of indoor air circulates about 70% of indoor air in a non-polluted place (living room, room, etc.) through the indoor air circulation pipe 31, and The contaminated air in a place such as a bathroom is exhausted to the outside through the exhaust pipe 20 by about 30%, so that the interior can be kept in a comfortable state at all times.

5 is a circuit diagram showing a state in which floor heating in the room is performed. As described above, when the second pump 64 installed in the third circulation pipe 63 is driven in the indoor heating mode, the heat pump 40 Since a part of the heated circulating water is supplied to the radiator or the floor pipe 65 through the third circulation pipe 63, floor heating as well as indoor air heating is performed at the same time.

6 is a circuit diagram showing a state in which hot water is performed, and in the process of heating circulating water by driving the heat pump 40, a hot water supply mode is performed as needed, or a sensor in the hot water tank 50 (not shown) When the hot water in the hot water tank 50 falls below the set temperature, the flow path of the three-way side 53 is switched to form a closed circuit with the indoor heat exchanger 42 of the heat pump 40, and accordingly, the hot water tank Since the hot water in 50 can be heated with the set hot water, hot water can be used in the bathroom 90.

When the hot water in the hot water tank 50 rises to a set temperature by the above-described operation, the flow path of the three-way side 53 is switched by a control unit (not shown), so that indoor cooling and heating are possible.

As described above, even in the hot water supply mode, when the first pump 62 installed in the second circulation pipe 61 is driven so that heat exchange with external air flowing into the room through the intake pipe 10 is performed, the extension pipe 66 ), since the circulating water in the storage tank 70 installed in) is supplied to the cooling and heating unit 60 through the second circulation pipe 61, heat exchange with external air is continuously performed.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains will be able to understand that it can be implemented in other specific forms without changing the technical idea or essential features. will be.

Therefore, it should be understood that the embodiments described above are illustrative and non-limiting in all respects, and the scope of the present invention described in the detailed description is indicated by the claims to be described later, and the meaning of the claims and The scope and all changes or modified forms derived from the concept of equivalent should be construed as being included in the scope of the present invention.

10: intake pipe 12: intake fan
13: first filter 14: bypass pipe
15: damper 20: exhaust pipe
22: exhaust fan 23: second filter
30: heat recovery unit 31: indoor air circulation pipe
40: heat pump 50: hot water tank
51: first circulation pipe 62: first pump
63: 3rd circulation pipe 64: 2nd pump
65: radiator or floor pipe 66: extension pipe
68: check valve 70: storage tank

Claims (8)

The inlet 11 and the exhaust 21 are respectively installed in the intake pipe 10 and the exhaust pipe 20, and the intake pipe 10 and the exhaust pipe 20 installed so as to communicate with the outside to forcibly suck air or , The intake fan 12 and the exhaust fan 22 to be discharged, and the first and second filters 13 respectively installed in the intake pipe 10 and the exhaust pipe 20 to filter odors and dust contained in the air (23), a heat recovery unit (30) that is installed to accommodate the intake pipe (10) and the exhaust pipe (20) to exchange heat between the intake air and the exhaust air, and installed inside the main body (1) A heat pump 40 that heats or cools the circulating water by exchanging heat with the air exhausted to the outdoors, and a hot water tank connected to the heat pump 40 and the first circulation pipe 51 to supply hot water to the circulating water ( 50), a circulation pump 52 installed in the first circulation pipe 51 to circulate circulating water, and a cooling and heating unit installed in an intake pipe 10 located at a rear end of the heat recovery unit 30 In the cooling and heating unit 60, hot water or cold water is supplied to the cooling/heating unit 60 according to the driving of the first pump 62 and connected to both ends of the first circulation pipe 51 and 60. The second circulation pipe 61 for exchanging heat, and a three-way valve installed at the connection portion between the first and second circulation pipes 51 and 61 to switch the flow path of the circulating water ( 53) and, by connecting the third circulation pipe 63 to the second circulation pipe 61 and driving the second pump 64 installed in the third circulation pipe 63, hot water or cold water to the radiator or floor pipe (65) is circulated, and the third circulation pipe (63) connected to the radiator or the bottom pipe (65) is connected to the second circulation pipe (61) through an extension pipe (66), and the extension pipe (66) includes hot or cold water. A storage tank (70) in which is stored is installed, and a check valve (67) is installed in the extension pipe (66) adjacent to the second circulation pipe (61).
The method according to claim 1,
Indoor ventilation combined cooling and heating system, characterized in that the heat recovery unit (30) is a plate-type heat exchanger.
The method according to claim 1 or 2,
A bypass pipe 14 is installed on both sides of the heat recovery unit 30 installed in the intake pipe 10 and the exhaust pipe 20 so as to communicate with the intake pipe 10, and the bypass pipe 14 has a damper ( 15), a cooling and heating system for indoor ventilation, characterized in that the opening and closing is possible.
The method according to claim 1,
Indoor ventilation combined cooling and heating system, characterized in that the indoor air circulation pipe (31) for circulating indoor air is installed to be connected to the intake pipe (10) connected to the rear end of the heat recovery unit (30).
delete delete The method according to claim 1,
Indoor ventilation combined cooling and heating system, characterized in that a preheating heater (16) that generates heat by power is further installed in the intake pipe (10) located at the front end of the heat recovery unit (30).
The method according to claim 1,
An auxiliary heater (68) for heating circulating water is further installed in the first circulation pipe (51).

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