KR20120026754A - Airconditioing circulation system - Google Patents

Abstract

PURPOSE: A ventilation and cooling-and-heating all in one system is provided to omit a blowing fan installed in a cooling-and-heating facilities because a ventilation is performed by using a blowing fan installed in a total heat exchanger and facilities for ventilation and cooling-and-heating are formed to be integrated by a flow path unit. CONSTITUTION: A ventilation and cooling-and-heating all in one system comprises a total heat exchanger(100), a heat pump(200), and a flow path unit. The total heat exchanger performs a heat exchange between indoor and outdoor air. The blowing fan(130) is installed inside of the total heat exchanger. The heat pump is connected to the total heat exchanger and performs cooling or heating thorough heat exchanging indoor air by using a cooling cycle circulation or heating cycle circulation. The flow path unit comprises a bypass valve. The indoor or outdoor air passed through the total heat exchanger is selectively supplied to the heat pump.

Description

Ventilation and heating integrated system {Airconditioing Circulation System}

The present invention relates to a ventilation and heating and heating system, and more particularly to a ventilation and heating and heating system capable of simultaneously or selectively ventilating and heating and heating.

Ventilation facilities are installed in large buildings such as apartments, buildings, and libraries. In particular, according to the recently announced building equipment standard, the installation of such ventilation equipment is mandatory when new apartments with more than 100 households are constructed.

In general, the ventilation system has a structure such as a duct whose ends are connected to the inside and outside of the building, respectively. The duct is divided into an air supply duct for introducing outside air and an exhaust duct for discharging the air inside, respectively, to flow air inside and outside the building.

On the other hand, apart from these ventilation facilities, the building is equipped with a heating and cooling system, such air conditioning and heating system is used for the air conditioner and heater. Of course, in recent years, such as a heat pump may be installed to install both cooling and heating.

However, the prior art as described above has the following problems.

Conventional ventilation equipment is operated separately from the cooling and heating system, a blower fan for ventilation and a blower fan for cooling and heating were operated separately. Therefore, it is difficult to build a unified system because the cost for the installation of the ventilation / air conditioning system increases and must be controlled separately.

In addition, in the case of a heat pump for cooling and heating at the same time, there is an advantage that both cooling and heating can be performed, but when the outdoor temperature falls below 5 degrees in winter, the efficiency drops sharply to 60% or less, and in extreme cases, the outdoor unit There is a problem that is damaged.

The present invention is to solve the problems of the prior art as described above, the present invention is to unify the ventilation equipment and heating and heating equipment to reduce the number of blowers and control the system can be made collectively.

Another object of the present invention is to be able to perform ventilation and cooling or heating respectively, or to simultaneously perform ventilation together with air conditioning.

Still another object of the present invention is to prevent the temperature of the outdoor unit from falling sharply in winter through heat exchange of the heat exchanger.

According to a feature of the present invention for achieving the above object, the present invention provides a heat exchange between the indoor air and the outdoor air in the ventilation and air conditioning system for circulating the indoor or outdoor air for ventilation or air conditioning A heat pump having a blower fan installed therein, and a heat pump connected to the heat exchanger and heat-cooling the indoor air through a cooling cycle circulation or a heating cycle (reverse cycle) circulation to perform cooling or heating of the indoor air, and the And a flow path unit having a bypass valve for controlling the indoor air or the outdoor air passing through the heat exchanger to be selectively supplied to the heat pump.

The heat exchanger includes a pair of heat exchangers for heat exchange while indoor air and outdoor air pass through each other, and a blower fan installed at each of the pair of heat exchangers to blow indoor air and outdoor air to the outside of the heat exchanger. It is provided.

The flow path unit is a first flow path for guiding indoor air from the indoor space to the outdoor unit of the heat pump through the heat exchanger and directing indoor air from the indoor space to the indoor unit of the heat pump through the heat exchanger. A first bypass valve positioned between a second flow path and the first flow path and the second flow path to selectively supply the indoor air to the first flow path or the second flow path, and the outdoor air to the heat transfer from the outdoor space. A third flow passage guiding the heat pump to the indoor unit of the heat pump, a fourth flow passage guiding the outdoor air from the outdoor space toward the outdoor unit of the heat pump through the heat exchanger, and the third flow passage and the third flow passage. A second bypass valve positioned between four flow paths and selectively supplying the indoor air to a third flow path or a fourth flow path includes a second bypass valve. do.

The first flow passage is provided with a third bypass valve between the heat exchanger and the indoor unit to allow the indoor air or outdoor air passing through the heat exchanger to selectively discharge the indoor air through the indoor unit.

The second flow passage is provided with a fourth bypass valve between the heat exchanger and the outdoor unit to allow the indoor air or outdoor air passing through the heat exchanger to selectively discharge the outdoor air through the outdoor unit.

The first bypass valve to the fourth bypass valve is controlled by a control unit,

i) When the ventilation system is input, the indoor air is discharged to the outside via the first heat exchanger through the first flow path, and the outdoor air is discharged to the inside via the heat exchanger through the third flow path,

ii) When the air conditioning system is input, the indoor air is discharged to the room via the heat exchanger and the indoor unit through the second flow path, and the outdoor air is discharged to the outside through the heat exchanger and the outdoor unit through the fourth flow path, respectively. ,

iii) When the ventilation and air conditioning system is input at the same time, the indoor air is discharged to the outside through the first heat exchanger and the outdoor unit through the first flow path, and the outdoor air is passed through the heat exchanger and the indoor unit to the inside through the third flow path. Discharged.

The first to fourth bypass valves are each operated by a motor according to the control of the control unit.

The heat pump is composed of an indoor unit and an outdoor unit, the indoor unit is provided with an evaporator, and the outdoor unit is provided with a compressor, a condenser, an expansion valve and a four-way valve.

In the ventilation and air conditioning system according to the present invention as described above, the following effects can be expected.

In the present invention, since the ventilation and cooling and heating facilities are united by the flow path unit to blow the air for heating and cooling by using the blower fan installed in the heat exchanger, the blower fan installed in the air conditioning and heating facility can be omitted, thus improving the maintenance and construction. The price is relatively low. In addition, the unified system has the effect that the control of the system can be achieved collectively.

In addition, in the present invention, ventilation and cooling or heating may be performed, respectively, but if necessary, ventilation may be performed together with air-conditioning and heating, so that the convenience of the user may be improved and the degree of freedom of the ventilation equipment may be expected.

In addition, in the present invention, since the relatively warm air is transferred to the outdoor unit through the heat exchange of the total heat exchanger, it is possible to prevent the temperature of the outdoor unit from dropping drastically in winter to prevent damage to the ventilation and air conditioning system.

1 is a block diagram showing the configuration of a preferred embodiment of a ventilation and air conditioning system according to the present invention.
Figure 2 is a block diagram showing the configuration of a heat pump constituting an embodiment of the present invention.
3 is a block diagram of a ventilation system using the embodiment of the present invention.
Figure 4 is a block diagram of a cooling or heating system using an embodiment of the present invention.
5 is a block diagram configured to simultaneously perform heating and cooling by using the embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings a specific embodiment of the ventilation and air conditioning system according to the present invention as described above will be described in detail.

1 is a configuration diagram of a preferred embodiment of a ventilation and air conditioning system according to the present invention, and FIG. 2 is a configuration diagram of a heat pump constituting an embodiment of the present invention.

As shown in these figures, the ventilation and air conditioning system according to the present invention is provided with a total heat exchanger (100). The heat exchanger 100 may be installed indoors or outdoors, and reference numeral I of FIG. 1 denotes an indoor space, and O denotes an outdoor space.

The heat exchanger 100 is to allow the heat of the air in the indoor space (I) and the outdoor space (O) to be exchanged with each other, the heat exchange unit 110 and the blowing fan 130 is provided therein. The heat exchange part 110 is installed so that a flow path through which indoor air passes and a flow path through which outdoor air passes to form a pair so that heat exchange occurs, and more specifically, may be provided in a condenser structure.

The pair of heat exchangers 110 is provided with a blowing fan 130, respectively. The blowing fan 130 is for blowing indoor air and outdoor air, respectively, and is composed of a first fan 140 and a second fan 150 as shown.

Indoor air or outdoor air blown by the blower fan 130 may be supplied to the indoor unit 220 or the outdoor unit 240 of the indoor and outdoor or the heat pump 200 along the flow path unit to be described later.

The heat pump 200 is connected to the total heat exchanger (100). The heat pump 200 is for cooling and heating the indoor air, and may simultaneously perform a cooling function and a heating function.

The structure of the heat pump 200 is shown well in FIG. As shown in the drawing, the indoor unit 220 of the heat pump 200 is provided with an evaporator 221, and the outdoor unit 240 includes a compressor 241, a condenser 243, an expansion valve 244, and a quadrilateral valve 242. It is provided.

The operating principle of the heat pump 200 will be described briefly. During cooling, the compressor 241, the four-sided 242, the condenser 243, the expansion valve 244, the evaporator 221 and the compressor 241 are operated by hand. do. As a result, the refrigeration cycle is executed, and the cold air generated by the evaporator 221 is sprayed indoors. The cold air may be blown by the blowing fan 130 of the total heat exchanger (100).

On the contrary, during the heating, the compressor 241, the four-sided 242, the evaporator 221, the expansion valve 244, the condenser 243 and the compressor 241 is operated, the heat generated in the condenser 243 in the process The room is heated by blowing air into the room. Of course, as described above, such warm air may be blown by the blowing fan 130 of the total heat exchanger (100).

At this time, as will be seen below, the indoor air or outdoor air passing through the heat exchanger 100 may selectively pass through the heat pump 200.

Next, the flow path unit will be described. The flow path unit is connected between the indoor space (I) and the outdoor space (O) and the heat exchanger 100 and the heat pump 200, and includes the entire connection pipe of the ventilation and heating and heating system.

The flow path unit is selectively connected between the indoor space (I) and the outdoor space (O) and the total heat exchanger (100) and the heat pump (200), the ventilation and heating and cooling system is a ventilation function or air conditioning function or a ventilation function and heating and cooling It will control so that the function can be performed at the same time.

More specifically, as shown in FIG. 1, the flow path unit includes the first to fourth flow paths L1, L2, D1, and D2 and the first bypass valves S1 to fourth bypass valves S1 to S4. ), Which will be examined below one by one.

First, the first passage L1 serves to guide the indoor air from the indoor space I to the outdoor unit 240 of the heat pump 200 through the heat exchanger 100. To this end, the first flow path L1 is connected between the indoor space I and the total heat exchanger 100 and from the total heat exchanger 100 to the fourth bypass valve S4.

The second flow path L2 serves to guide indoor air from the indoor space I to the indoor unit 220 of the heat pump 200 via the heat exchanger 100. To this end, the second flow path L2 is connected between the indoor space I and the total heat exchanger 100 and from the total heat exchanger 100 to the third bypass valve S3.

In this case, a first bypass valve S1 is provided between the first flow path L1 and the second flow path L2. The first bypass valve S1 rotates to change the direction of the flow path, and is operated by a motor in this embodiment.

The first bypass valve S1 selectively supplies the indoor air to the first flow path L1 or the second flow path L2, and as shown in FIG. 3, the first flow path L1 is provided for ventilation. In the case of selecting air-conditioning as shown in FIG. 4, the second flow path L2 is selected.

Next, referring to the third flow path D1, the third flow path D1 is the indoor unit 220 of the heat pump 200 through the electrothermal heat exchanger 100 from the outdoor space O. It will guide you in the direction. To this end, the third flow path D1 is connected between the outdoor space O and the total heat exchanger 100 and from the total heat exchanger 100 to the third bypass valve S3.

In addition, referring to the fourth flow path D2, the fourth flow path D2 is an outdoor unit 240 of the heat pump 200 passing through the electrothermal heat exchanger 100 from the outdoor space O. It will guide you in the direction. To this end, the fourth flow path D2 is connected between the outdoor space O and the total heat exchanger 100 and from the total heat exchanger 100 to the fourth bypass valve S4.

In this case, a second bypass valve S2 is provided between the third passage D1 and the fourth passage D2. The second bypass valve S2 is for selectively supplying the indoor air to the third flow path D1 or the fourth flow path D2. Similarly to the first bypass valve S1, the second bypass valve S2 is provided. The valve S2 rotates to change the direction of the flow path, and is operated by a motor in this embodiment.

In addition, the first flow path (L1) is provided with a third bypass valve (S3) between the heat exchanger 100 and the indoor unit 220, the indoor air or outdoor air passing through the heat exchanger (100) Optionally, it passes through the indoor unit 220 to be discharged into the room.

Similarly, the second flow path L2 is provided with a fourth bypass valve S4 between the heat exchanger 100 and the outdoor unit 240 to pass through the heat exchanger 100. Air is selectively passed through the outdoor unit 240 to be discharged to the outside.

At this time, indoor air or outdoor air passing through the ventilation and air conditioning system is blown by the blower fan 130 inside the heat exchanger 100. That is, the heat exchanger 100 and the heat pump 200 are connected to each other by a flow path unit, and since the indoor air and outdoor air always pass through the heat exchanger 100, the heat exchanger 100 is provided. When the blowing fan 130 blows the indoor air or the outdoor air, the indoor air or the outdoor air can move on the entire ventilation and air conditioning system.

Although not shown, the control unit is provided with the ventilation and air conditioning system. The control unit serves to adjust the blower fan 130 and the first bypass valve to the fourth bypass valve (S1 ~ S4), and is connected to a separate input unit can be adjusted according to the user's input It can also be adjusted by the automatic control.

Hereinafter, the operation of the ventilation and air conditioning system according to the present invention as described above will be described in detail with reference to the accompanying drawings.

First, the ventilation system is described. If a user or an administrator does not need heating and cooling and only wants to enter the ventilation system, the ventilation system is activated. The ventilation system largely discharges the indoor air to the outside through the first heat exchanger 100 through the first flow path L1, and the outdoor air passes through the heat exchanger 100 through the third flow path D1. It is composed of a series of processes that are discharged into the interior.

That is, as shown in FIG. 3, the internal air and the external air are exchanged with each other in the total heat exchanger 100, and then discharged into the external space and the internal space, respectively, so that fresh air is circulated continuously.

At this time, the pre-heat exchanger 100 is responsible for heat exchange between the indoor air and the outdoor air, it is possible to improve the energy efficiency. For example, when there is a cool indoor air and outdoor air having a relatively high temperature in summer, the temperature is primarily lowered when the outdoor air is inhaled to meet cold indoor air, thereby increasing energy efficiency.

On the other hand, when the user or manager wants to heat and heat the heat pump 200 is operated. The heat pump 200 can perform both cooling and heating. Hereinafter, cooling is taken as an example.

The heat pump 200 enables cooling, the process

i) compression of gas through compressor 241, ii) liquefaction of gas through condenser 243, iii) low temperature, low pressure of gas through expansion, iv) and finally evaporation through evaporator 221 do.

At this time, since the evaporator 221 is in the indoor unit 220, when the blowing force is transmitted from the blower fan 130, the indoor air passing through the evaporator 221 is discharged back to the room in a cool state and cooled. The heating is done in the reverse order.

On the other hand, when cooling is performed, indoor air is returned to the interior, and outdoor air is returned to the outdoors. Specifically, the indoor air is first blown again through the pre-heat exchanger 100 and the indoor unit 220, and the outdoor air is first blown again through the pre-heat exchanger 100 and the outdoor unit 240, respectively.

To this end, the first bypass valve S1 and the third bypass valve S3 guide the flow of the indoor air. That is, the first bypass valve S1 guides the indoor air to the second flow path L2, and the third bypass valve S3 guides the induced indoor air back to the indoor unit 220. .

In addition, the second bypass valve S2 and the fourth bypass valve S4 guide the flow of the outdoor air. The fourth bypass valve S4 guides the induced outdoor air to the outdoor unit 240 again to D1).

Accordingly, the indoor air is cooled while passing through the indoor unit 220.

On the other hand, in the case of heating, indoor air and outdoor air pass through the same path, but only the difference that the heat pump 200 acts as a heater.

However, when the heat pump 200 is used as a heater, the temperature of the outdoor unit 240 may be buffered due to the total heat exchanger 100. That is, when the heat pump 200 is a heater, the indoor unit 220 is warm, but the outdoor unit 240 becomes cold. In particular, when the temperature of the outdoor space O is less than or equal to minus 5 degrees, the heat pump 200. ), The greater the likelihood of breakage or malfunction or degradation of efficiency.

At this time, the outdoor air warmed by heat exchange with the warm indoor air through the heat exchanger 100 supplies heat to the condenser 243 in the process of passing through the outdoor unit 240, and thus the outdoor unit 240 is damaged or It is possible to prevent the efficiency from dropping.

Next, the process of simultaneously ventilating and heating and using the ventilation and air conditioning system according to the present invention will be described. As shown in Figure 5, when viewed as a whole indoor air is outdoor, outdoor air is sucked into the room while the ventilation is made.

In this process, the indoor air passes through the heat exchanger 100 and the outdoor unit 240, and the outdoor air passes through the heat exchanger 100 and the indoor unit 220. If cooling is taken as an example, the cold indoor air receives heat from the relatively high temperature outdoor air through the heat exchanger (100), and in this process, the outdoor air, which has been reduced in temperature, passes through the indoor unit (220). Will fall.

In this case, the first bypass valve S1 and the fourth bypass valve S4 guide the flow of the indoor air. That is, the first bypass valve S1 guides the indoor air to the first flow path L1, and the fourth bypass valve guides the guided indoor air to the outdoor unit 240 again.

In addition, the second bypass valve S2 and the third bypass valve S3 guide the flow of the outdoor air, and specifically, the second bypass valve S2 is the third air path ( D4) and the fourth bypass valve (S4) guides the induced outdoor air toward the outdoor unit (240).

Accordingly, the indoor air and the outdoor air can be cooled and heated by the heat pump 200 together with the ventilation.

The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and those skilled in the art can make various modifications and adaptations within the scope of the claims. It is self-evident.

100: heat exchanger 110: heat exchanger
130: blower fan 200: heat pump

Claims (8)

In a ventilation and air conditioning system that circulates indoor or outdoor air for ventilation or air conditioning,
A heat exchanger that performs heat exchange between indoor air and outdoor air, and has a blower fan installed therein;
A heat pump connected to the total heat exchanger and performing cooling or heating of indoor air by heat-exchanging the indoor air through a cooling cycle circulation or a heating cycle (reverse cycle) circulation;
And a flow path unit having a bypass valve for controlling the indoor or outdoor air passing through the heat exchanger to be selectively supplied to the heat pump.
The heat exchanger of claim 1, wherein the electrothermal heat exchanger is provided with a pair of heat exchangers each configured to perform heat exchange while the indoor air and outdoor air pass through each other, and the pair of heat exchangers, respectively, to allow the indoor air and outdoor air to be external to the heat exchanger. Ventilation and cooling integrated system, characterized in that the blowing fan is provided to blow the air.
According to claim 1 or claim 2, wherein the flow path unit
A first flow path for guiding indoor air from an indoor space to the outdoor unit of the heat pump through the electrothermal heat exchanger;
A second flow path for guiding indoor air from the indoor space to the indoor unit of the heat pump through the heat exchanger;
A first bypass valve positioned between the first channel and the second channel to selectively supply the indoor air to the first channel or the second channel;
A third flow passage for guiding the outdoor air from the outdoor space to the indoor unit of the heat pump through the heat exchanger;
A fourth flow path for guiding the outdoor air from the outdoor space to the outdoor unit of the heat pump through the heat exchanger;
And a second bypass valve positioned between the third channel and the fourth channel to selectively supply the indoor air to the third channel or the fourth channel.
[4] The method of claim 3, wherein the first flow path is provided with a fourth bypass valve between the heat exchanger and the outdoor unit, so that indoor air or outdoor air passing through the heat exchanger is selectively discharged through the outdoor unit. Ventilation and cooling and heating integrated system characterized in that.
The air conditioner of claim 4, wherein a third bypass valve is provided between the heat exchanger and the indoor unit so that the indoor air or outdoor air passing through the heat exchanger is selectively discharged through the indoor unit. Ventilation and cooling and heating integrated system characterized in that.
The method of claim 5, wherein the first bypass valve to the fourth bypass valve is controlled by a control unit,
i) When the ventilation system is input, the indoor air is discharged to the outside via the first heat exchanger through the first flow path, and the outdoor air is discharged to the inside via the heat exchanger through the third flow path,
ii) When the air conditioning system is input, the indoor air is discharged to the room via the heat exchanger and the indoor unit through the second flow path, and the outdoor air is discharged to the outside through the heat exchanger and the outdoor unit through the fourth flow path, respectively. ,
iii) When the ventilation and air conditioning system is input at the same time, the indoor air is discharged to the outside through the first heat exchanger and the outdoor unit through the first flow path, and the outdoor air is passed through the heat exchanger and the indoor unit to the inside through the third flow path. Ventilation and heating integrated system, characterized in that the discharge.
The system of claim 6, wherein the first bypass valve and the fourth bypass valve are operated by a motor according to the control of the control unit.
The system of claim 7, wherein the heat pump comprises an indoor unit and an outdoor unit, the indoor unit is provided with an evaporator, and the outdoor unit is provided with a compressor, a condenser, an expansion valve, and an all-round valve.

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