KR102759027B1 - A system for performing ventilation and cooling while removing latent heat through direct heat exchange between a refrigerant and a moisture adsorbent, and a method for performing ventilation and cooling - Google Patents

Abstract

One embodiment of the present invention provides a technology capable of simultaneously performing ventilation, dehumidification, and cooling with one system. A latent heat removal ventilation and cooling system using a direct heat exchange method of refrigerant to adsorbent according to an embodiment of the present invention includes: a first heat exchange unit which dehumidifies or humidifies air passing through it; a second heat exchange unit which dehumidifies or humidifies air passing through it and alternately performs dehumidification or humidification with the first heat exchange unit; a cooling unit including a compressor, an evaporator, a first expansion valve which is an expansion valve, and a condenser; and a four-way valve which is connected to the compressor and transfers refrigerant discharged from the compressor to the first heat exchange unit or the second heat exchange unit and transfers refrigerant discharged from the first heat exchange unit or the second heat exchange unit to the compressor.

Description

{A system for performing ventilation and cooling while removing latent heat through direct heat exchange between a refrigerant and a moisture adsorbent, and a method for performing ventilation and cooling}

The present invention relates to a ventilation cooling system and a ventilation cooling method using a direct heat exchange method between a refrigerant and an adsorbent, and more specifically, to a technology capable of simultaneously performing ventilation, dehumidification, and cooling with one system.

Recently, the importance of indoor ventilation has been continuously increasing due to worsening fine dust, increased carbon dioxide due to indoor activities, and the generation of harmful factors. In particular, if ventilation is not performed for a long time, various chemicals such as formaldehyde can accumulate in the house, worsening the air quality.

Even if ventilation is performed, air quality purification is necessary due to yellow dust, fine dust, etc., and in the summer, indoor temperature and humidity increase due to ventilation.

To solve this problem, heat exchangers (sensible heat) are used to prevent the indoor temperature from rising rapidly, but this requires a separate dehumidification system to remove humidity and a refrigerator to reduce the indoor temperature.

Korean Patent No. 10-1525849 (Title of the Invention: Compressor and Air Conditioner Using Same) discloses an air conditioner including a compressor that compresses a refrigerant, an outdoor heat exchanger that performs heat exchange between outdoor air and the refrigerant, an indoor heat exchanger that performs heat exchange between indoor air and the refrigerant, and an expansion valve that reduces the pressure of the refrigerant, wherein the refrigerant uses hydrofluorocarbon.

Republic of Korea Patent No. 10-1525849

The purpose of the present invention to solve the above problems is to simultaneously perform ventilation, dehumidification, and cooling with one system.

And, the purpose of the present invention is to utilize waste heat within the system as an energy source necessary for removing latent heat load generated due to ventilation.

The technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

The present invention for achieving the above purpose comprises: a first heat exchanger which dehumidifies or humidifies air passing through it; a second heat exchanger which dehumidifies or humidifies air passing through it and alternately dehumidifies or humidifies it with the first heat exchanger; a cooling unit which includes a compressor, an evaporator, a first expansion valve which is an expansion valve, and a condenser; and a four-way valve which is connected to the compressor, transfers refrigerant discharged from the compressor to the first heat exchanger or the second heat exchanger, and transfers refrigerant discharged from the first heat exchanger or the second heat exchanger to the compressor.

In an embodiment of the present invention, a second expansion valve may be further included, one side of which is connected to the first heat exchanger and the other side is connected to the second heat exchanger.

In an embodiment of the present invention, the first heat exchange unit and the second heat exchange unit can alternately perform adsorption and desorption on moisture in air passing therethrough.

In an embodiment of the present invention, the apparatus may further include a first damper unit that transfers outside air to the first heat exchange unit or the second heat exchange unit; a second damper unit that transfers air discharged from the first heat exchange unit or the second heat exchange unit to the outdoors; a third damper unit that transfers dehumidified air passing through the first heat exchange unit to the indoors or transfers indoor air to the first heat exchange unit; and a fourth damper unit that transfers dehumidified air passing through the second heat exchange unit to the indoors or transfers indoor air to the second heat exchange unit.

In an embodiment of the present invention, the first damper unit may include a first damper for controlling outside air flowing from a point outdoors to the first heat exchange unit; and a first damper for controlling outside air flowing from another point outdoors to the second heat exchange unit.

In an embodiment of the present invention, the second damper unit may include a 2-1 damper that controls outside air flowing from another outdoor location to the second heat exchange unit; and a 2-2 damper that controls outside air flowing from one outdoor location to the first heat exchange unit.

In an embodiment of the present invention, the third damper unit may include a 3-1 damper that controls air flowing from the first heat exchange unit to a point in the room; and a 3-2 damper that controls air flowing from another point in the room to the first heat exchange unit.

In an embodiment of the present invention, the fourth damper unit may include a 4-1 damper that controls air flowing from another point in the room to the second heat exchange unit; and a 4-2 damper that controls air flowing from the second heat exchange unit to a point in the room.

In an embodiment of the present invention, the device may further include a first blower formed outdoors and connected to the first damper portion; and a second blower formed outdoors and connected to the second damper portion.

In an embodiment of the present invention, a control unit for transmitting a control signal to the four-way valve, the first damper unit, the second damper unit, the third damper unit, or the fourth damper unit may be further included.

In order to achieve the above object, the present invention comprises: a first step in which the refrigerant discharged from the compressor passes through the four-way valve and is delivered to the second heat exchange unit, and the refrigerant that has passed through the second heat exchange unit sequentially passes through the second expansion valve, the first heat exchange unit, and the four-way valve, and then is delivered to the compressor; a second step in which the temperature of the first heat exchange unit decreases and the temperature of the second heat exchange unit increases, and moisture adsorption is performed in the first heat exchange unit and moisture desorption is performed in the second heat exchange unit, thereby decreasing the temperature and humidity of the air that has passed through the first heat exchange unit and increasing the humidity of the air that has passed through the second heat exchange unit; a third step in which the refrigerant discharged from the compressor passes through the four-way valve and is delivered to the first heat exchange unit, and the refrigerant that has passed through the first heat exchange unit sequentially passes through the second expansion valve, the second heat exchange unit, and the four-way valve, and then is delivered to the compressor; And a fourth step in which the temperature of the first heat exchanger is increased, the temperature of the second heat exchanger is decreased, moisture desorption is performed in the first heat exchanger, and moisture adsorption is performed in the second heat exchanger, thereby increasing the humidity of air passing through the first heat exchanger, and decreasing the temperature and humidity of air passing through the second heat exchanger, is included, and the first to fourth steps are sequentially repeated and performed.

In an embodiment of the present invention, in the second step, outside air transferred from an outdoor point to the first heat exchange unit can pass through the first heat exchange unit and be supplied to an indoor point, and indoor air transferred from another indoor point to the second heat exchange unit can pass through the second heat exchange unit and be discharged to another outdoor point.

In an embodiment of the present invention, in the fourth step, outside air transferred from an outdoor point to the second heat exchange unit can pass through the second heat exchange unit and be supplied to an indoor point, and indoor air transferred from another indoor point to the first heat exchange unit can pass through the first heat exchange unit and be discharged to another outdoor point.

The effect of the present invention according to the above configuration is that a cooling refrigeration cycle and a dehumidifying refrigeration cycle are performed in one system, so that ventilation, dehumidification, and cooling can be performed simultaneously, thereby improving the dehumidification and cooling efficiency.

In addition, the effect of the present invention is that by obtaining and utilizing a heat source from a compressor of an electric compression type refrigeration cycle for cooling, the latent heat load generated by ventilation is removed through a dehumidification process, and at the same time, waste heat is utilized as a heat source necessary for removing the latent heat load, thereby improving the total energy efficiency of the system.

The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the composition of the invention described in the claims.

Figure 1 is a schematic diagram of fluid flow when outside air passes through a first heat exchanger according to one embodiment of the present invention.
FIG. 2 is an enlarged view of the fluid flow when outside air passes through the first heat exchanger according to one embodiment of the present invention.
FIG. 3 is a schematic diagram of fluid flow when outside air passes through a second heat exchanger according to one embodiment of the present invention.
FIG. 4 is an enlarged view of the fluid flow when outside air passes through a second heat exchanger according to one embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the attached drawings. However, the present invention can be implemented in various different forms, and therefore is not limited to the embodiments described herein. In addition, in order to clearly describe the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are assigned similar drawing reference numerals throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, joined)" to another part, this includes not only the case where it is "directly connected" but also the case where it is "indirectly connected" with another member in between. Also, when a part is said to "include" a certain component, this does not mean that other components are excluded, unless otherwise specifically stated, but that other components can be included.

The terminology used herein is only used to describe particular embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. It should be understood that the terms "comprises" or "has" in this specification are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

The present invention will be described in detail with reference to the attached drawings below.

FIG. 1 is a schematic diagram of fluid flow when outside air passes through a first heat exchange unit (110) according to one embodiment of the present invention, and FIG. 2 is an enlarged diagram of fluid flow when outside air passes through a first heat exchange unit (110) according to one embodiment of the present invention.

And, FIG. 3 is a schematic diagram of fluid flow when outside air passes through a second heat exchanger (120) according to one embodiment of the present invention, and FIG. 4 is an enlarged diagram of fluid flow when outside air passes through a second heat exchanger (120) according to one embodiment of the present invention.

In Figures 1 and 3, indoor can represent an indoor space and outdoor can represent the outdoors.

As shown in FIGS. 1 to 4, the ventilation cooling system of the present invention includes: a first heat exchange unit (110) that dehumidifies or humidifies air passing through it; a second heat exchange unit (120) that dehumidifies or humidifies air passing through it and alternately dehumidifies or humidifies it with the first heat exchange unit (110); a cooling unit including a compressor (710), an evaporator (740), a first expansion valve (730) that is an expansion valve, and a condenser (720); and a four-way valve (210) that is connected to the compressor (710) and transfers refrigerant discharged from the compressor (710) to the first heat exchange unit (110) or the second heat exchange unit (120) and transfers refrigerant discharged from the first heat exchange unit (110) or the second heat exchange unit (120) to the compressor (710).

In each of the first heat exchange unit (110) and the second heat exchange unit (120), a space through which air passes and a space through which refrigerant passes are separated by a partition, and heat exchange is performed between air passing through the first heat exchange unit (110) and the refrigerant, and heat exchange can be performed between air passing through the second heat exchange unit (120) and the refrigerant.

In addition, a moisture absorbent is coated on the surface of each of the first heat exchange unit (110) and the second heat exchange unit (120) that comes into contact with air, and the first heat exchange unit (110) and the second heat exchange unit (120) can alternately perform adsorption and desorption of moisture in the air passing through each of them.

Specifically, when the first heat exchange unit (110) is relatively low temperature, the second heat exchange unit (120) becomes relatively high temperature, and moisture in the air passing through while in contact with the moisture absorbent of the first heat exchange unit (110) is adsorbed to the moisture absorbent of the first heat exchange unit (110), and moisture adsorbed to the moisture absorbent of the second heat exchange unit (120) is desorbed and can flow as air passing through the second heat exchange unit (120).

And, when the first heat exchanger (110) is relatively high temperature, the second heat exchanger (120) becomes relatively low temperature, and moisture adsorbed on the moisture absorbent can be desorbed and flow into the air passing through the first heat exchanger (110), and moisture in the air passing through while contacting the moisture absorbent of the second heat exchanger (120) can be adsorbed on the moisture absorbent of the second heat exchanger (120).

Matters related to the operation of the first heat exchanger (110) and the second heat exchanger (120) as described above will be described in detail below.

The ventilation cooling system of the present invention may further include a second expansion valve (220) which is connected to the first heat exchanger (110) at one end and to the second heat exchanger (120) at the other end as an expansion valve. As described above, a refrigerant that performs heat exchange with air passes through each of the first heat exchanger (110) and the second heat exchanger (120), and such a refrigerant may pass through the second expansion valve (220).

In addition to the refrigeration cycle by the cooling unit as described above, a refrigeration cycle by the compressor (710) of the cooling unit, the first heat exchange unit (110), the second heat exchange unit (120), and the second expansion valve (220) can be formed.

Specifically, in one refrigeration cycle by the second expansion valve (220), the high temperature and high pressure refrigerant discharged from the compressor (710) is transferred to the four-way valve (210), and the high temperature and high pressure refrigerant can be transferred to the second heat exchange unit (120) by the four-way valve (210), and the first heat exchange unit (110) can perform a function such as an evaporator (740) and the second heat exchange unit (120) can perform a function such as a condenser (720).

In this case, the refrigerant delivered to the second heat exchanger (120) passes through the second heat exchanger (120), the second expansion valve (220), and the first heat exchanger (110) sequentially and is then delivered to the four-way valve (210), and the refrigerant delivered to the four-way valve (210) is then delivered again to the compressor (710), thereby forming a refrigeration cycle.

At this time, the temperature of the first heat exchanger (110) may decrease and the temperature of the second heat exchanger (120) may increase. Here, by passing the outside air through the first heat exchanger (110), the moisture of the outside air is adsorbed by the moisture absorbent of the first heat exchanger (110), and the outside air is cooled through heat exchange between the refrigerant passing through the first heat exchanger (110) and the outside air, so that the outside air with reduced moisture and reduced temperature can be supplied to the room.

And, by passing indoor air through the second heat exchanger (120), moisture adsorbed on the moisture absorbent of the second heat exchanger (120) is desorbed and transferred to the indoor air, and the desorbed moisture can be discharged outdoors together with the indoor air.

In another refrigeration cycle by the second expansion valve (220), the high temperature and high pressure refrigerant discharged from the compressor (710) is transferred to the four-way valve (210), and the high temperature and high pressure refrigerant can be transferred to the second heat exchange unit (120) by the four-way valve (210), and the first heat exchange unit (110) can perform a function like a condenser (720) and the second heat exchange unit (120) can perform a function like an evaporator (740).

In this case, the refrigerant delivered to the first heat exchange unit (110) passes through the first heat exchange unit (110), the second expansion valve (220), and the second heat exchange unit (120) sequentially and is then delivered to the four-way valve (210), and the refrigerant delivered to the four-way valve (210) is then delivered again to the compressor (710), thereby forming a refrigeration cycle.

At this time, the temperature of the first heat exchanger (110) may increase and the temperature of the second heat exchanger (120) may decrease. Here, by passing the outside air through the second heat exchanger (120), the moisture of the outside air is adsorbed by the moisture absorbent of the second heat exchanger (120), and the outside air is cooled through heat exchange between the refrigerant passing through the second heat exchanger (120) and the outside air, so that the moisture is reduced and the outside air with the reduced temperature can be supplied to the room.

And, by passing indoor air through the first heat exchange unit (110), moisture adsorbed on the moisture absorbent of the first heat exchange unit (110) is desorbed and transferred to the indoor air, and the desorbed moisture can be discharged outdoors together with the indoor air.

The ventilation cooling system of the present invention may further include a first damper unit that transfers outside air to a first heat exchange unit (110) or a second heat exchange unit (120); a second damper unit that transfers air discharged from the first heat exchange unit (110) or the second heat exchange unit (120) to the outdoors; a third damper unit that transfers air dehumidified while passing through the first heat exchange unit (110) to an indoor space or transfers indoor air to the first heat exchange unit (110); and a fourth damper unit that transfers air dehumidified while passing through the second heat exchange unit (120) to an indoor space or transfers indoor air to the second heat exchange unit (120).

The first damper section may include a first-first damper (311) that controls outside air flowing from a point outdoors to the first heat exchange section (110); and a first-second damper (312) that controls outside air flowing from another point outdoors to the second heat exchange section (120).

The second damper section may include a second-first damper (321) that controls outside air flowing from another outdoor location to the second heat exchange section (120); and a second-second damper (322) that controls outside air flowing from one outdoor location to the first heat exchange section (110).

The third damper section may include a third-first damper (331) that controls air flowing from the first heat exchange section (110) to a point in the room; and a third-second damper (332) that controls air flowing from another point in the room to the first heat exchange section (110).

The fourth damper section may include a fourth-first damper (341) that controls air flowing from another point in the room to the second heat exchange section (120); and a fourth-second damper (342) that controls air flowing from the second heat exchange section (120) to a point in the room.

Here, each damper can control the passage or blocking of air passing through the installed path, and can also regulate the amount of air passing through the corresponding path.

The ventilation and cooling system of the present invention may include a housing having an internal space, and a four-way valve (210), a first heat exchanger (110), and a second heat exchanger (120) may be installed inside the housing. However, the four-way valve (210) may also be installed outside the housing.

The ventilation and cooling system of the present invention may further include a first blower (610) formed outdoors and connected to a first damper section; and a second blower (620) formed outdoors and connected to a second damper section.

A first blower (610) and a second blower (620) may be formed on the outside of the housing, and the first blower (610) may be formed at one point outdoors and the second blower (620) may be formed at another point outdoors.

In addition, a duct, such as a 1-1 duct (411), which is coupled at one end to the first blower (610), at the other end to the first heat exchanger (110), and at the other end to the 1-1 damper (311), a duct, such as a 2-1 duct (421), which is coupled at one end to the second blower (620), at the other end to the second heat exchanger (120), and at the other end to the 2-1 damper (321), a duct, such as a 3-1 duct (431), which is coupled at one end to the first heat exchanger (110) and at the other end to be placed indoors, and a duct, such as a 4-1 duct (441), which is coupled at one end to the second heat exchanger (120) and at the other end to be placed indoors, can be formed.

In addition, a duct, a 1-2 duct (412), which is a duct that is connected at one end to the upper portion of the 1-1 duct (411) formed between the 1st blower (610) and the 1-1 damper (311) and at the other end to the lower portion of the 2-1 duct (421) formed between the 2-1 damper (321) and the second heat exchanger (120) and is connected to the 1-2 damper (312), and a 2-2 duct (422), which is a duct that is connected at one end to the upper portion of the 2-1 duct (421) formed between the 2nd blower (620) and the 2-1 damper (321) and at the other end to the lower portion of the 1-1 duct (411) formed between the 1-1 damper (311) and the 1st heat exchanger (110) and is connected to the 2-2 damper (322), can be formed.

And, a 3-2 duct (432) which is a duct that is coupled to the upper part of the 3-1 duct (431) formed between the 1st heat exchanger (110) and the 3-1 damper (331) at one end and is coupled to the lower part of the 4-1 duct (441) formed by extending from the 4-1 damper (341) toward the interior and is coupled to the 3-2 damper (332), and a 4-2 duct (442) which is a duct that is coupled to the upper part of the 4-1 duct (441) formed between the 2nd heat exchanger (120) and the 4-1 damper (341) at one end and is coupled to the lower part of the 3-1 duct (431) formed by extending from the 3-1 damper (331) toward the interior and is coupled to the 4-2 damper (342) can be formed.

In FIGS. 1 to 4, the 1-2 duct (412) and the 2-2 duct (422) are expressed as intersecting, but the 1-2 duct (412) and the 2-2 duct (422) are separated from each other. In addition, the 3-2 duct (432) and the 4-2 duct (442) are expressed as intersecting, but the 3-2 duct (432) and the 4-2 duct (442) are separated from each other.

In connecting the compressor (710) and the four-way valve (210), the first heat exchanger (110) and the second heat exchanger (120), a first pipe (510) which is a pipe having one end connected to the four-way valve (210) and the other end connected to the first heat exchanger (110), and a second pipe (520) which is a pipe having one end connected to the four-way valve (210) and the other end connected to the second heat exchanger (120) can be formed.

In addition, a third pipe (530) that is connected to the four-way valve (210) at one end and the compressor (710) at the other end and delivers the refrigerant discharged from the compressor (710) to the four-way valve (210), and a fourth pipe (540) that is connected to the four-way valve (210) at one end and the compressor (710) at the other end and delivers the refrigerant that has passed through the four-way valve (210) to the compressor (710) can be formed.

In FIGS. 1 to 4, each of the first to fourth pipes (510) to (540) is indicated by a dotted line for ease of understanding.

And, a connecting pipe (550) can be formed that is connected at one end to the first heat exchanger (110), at the other end to the second heat exchanger (120), and at the other end to the second expansion valve (220).

In the cooling section, a first cooling pipe (751) having one end connected to a compressor (710) and the other end connected to a condenser (720), a second cooling pipe (752) having one end connected to the condenser (720) and the other end connected to a first expansion valve (730), a third cooling pipe (753) having one end connected to the first expansion valve (730) and the other end connected to an evaporator (740), and a fourth cooling pipe (754) having one end connected to the compressor (710) and the other end connected to an evaporator (740) can be formed.

The ventilation and cooling system of the present invention may further include a control unit that transmits a control signal to a four-way valve (210), a first damper unit, a second damper unit, a third damper unit, or a fourth damper unit.

The control unit is equipped with a program for operating the ventilation and cooling system of the present invention, and the control unit can transmit control signals to all components operating in the ventilation and cooling system of the present invention, such as the first-first damper (311) to the fourth-second damper (342), the four-way valve (210), the second expansion valve (220), the first blower (610) and the second blower (620), and the cooling unit.

The control unit can operate each component by transmitting a control signal generated over time from an equipped program, and can also perform control for each component by using temperature and humidity information of the indoor space.

Specifically, a temperature sensor for measuring temperature and a humidity sensor for measuring humidity can be formed in the indoor space.

And, as shown in FIGS. 1 and 2, the mode in which the ventilation and cooling system of the present invention operates may be referred to as the first mode, and as shown in FIGS. 3 and 4, the mode in which the ventilation and cooling system of the present invention operates may be referred to as the second mode. A control signal may be transmitted from the control unit so that the first mode or the second mode is selected according to temperature or humidity information of each indoor space.

During operation in the first mode, if the temperature measurement value of the temperature sensor is outside the reference temperature range stored in the control unit, the control unit transmits a control signal to the cooling unit, the four-way valve (210), the first heat exchange unit (110), the second heat exchange unit (120), and the second expansion valve (220) so that the temperature measurement value of the temperature sensor is within the reference temperature range, thereby controlling the output of one or more of the two refrigeration cycles.

And, when the humidity measurement value of the humidity sensor is outside the standard humidity range stored in the control unit, the first mode is changed to the second mode by a control signal from the control unit, so that dehumidification by the first heat exchange unit (110) is terminated and dehumidification by the second heat exchange unit (120) can be performed.

Similarly, during operation of the second mode, if the temperature measurement value of the temperature sensor is outside the reference temperature range stored in the control unit, the control unit can control the output of one or more of the two refrigeration cycles by transmitting a control signal to the cooling unit, the four-way valve (210), the first heat exchange unit (110), the second heat exchange unit (120), and the second expansion valve (220) so that the temperature measurement value of the temperature sensor is within the reference temperature range.

And, when the humidity measurement value of the humidity sensor is outside the standard humidity range stored in the control unit, the second mode is changed to the first mode by a control signal from the control unit, so that dehumidification by the second heat exchange unit (120) is terminated and dehumidification by the first heat exchange unit (110) can be performed.

Hereinafter, a ventilation cooling method using the ventilation cooling system of the present invention will be described.

In the following, steps 1 and 2 are descriptions of the first mode, steps 3 and 4 are descriptions of the second mode, and the first and second modes can be performed alternately and repeatedly. That is, steps 1 to 4 described below can be performed sequentially and repeatedly.

And, even without separate explanation, the operation of each configuration below is performed by a control signal transmitted from the control unit.

First, in the first stage, the refrigerant discharged from the compressor (710) passes through the four-way valve (210) and is delivered to the second heat exchanger (120), and the refrigerant that has passed through the second heat exchanger (120) can be delivered to the compressor (710) after sequentially passing through the second expansion valve (220), the first heat exchanger (110), and the four-way valve (210).

Specifically, when a control signal for performing the first mode is transmitted from the control unit to each configuration, the refrigerant discharged from the compressor (710) flows along the third pipe (530) and is then transmitted to the four-way valve (210), and the refrigerant whose flow direction is controlled by the four-way valve (210) can flow along the second pipe (520) and then be transmitted to the second heat exchange unit (120). At this time, the second heat exchange unit (120) can perform the same function as the condenser (720).

In addition, the refrigerant that has passed through the second heat exchange unit (120) flows through the other end of the connecting pipe (550) and then passes through the second expansion valve (220) while flowing along the connecting pipe (550), and the refrigerant that has passed through the second expansion valve (220) can flow along the connecting pipe (550) to one end of the connecting pipe (550) and be delivered to the first heat exchange unit (110). At this time, the first heat exchange unit (110) can perform the same function as the evaporator (740).

And, the refrigerant that has passed through the first heat exchanger (110) flows along the first pipe (510) and is then delivered to the four-way valve (210), and the refrigerant whose flow direction is controlled by the four-way valve (210) can flow along the fourth pipe (540) and then be delivered to the compressor (710).

In the second stage, the temperature of the first heat exchange unit (110) decreases and the temperature of the second heat exchange unit (120) increases, moisture adsorption is performed in the first heat exchange unit (110) and moisture desorption is performed in the second heat exchange unit (120), so that the temperature and humidity of air passing through the first heat exchange unit (110) decrease and the humidity of air passing through the second heat exchange unit (120) can increase.

In the second stage, outside air transferred from an outdoor point to the first heat exchange unit (110) can pass through the first heat exchange unit (110) and be supplied to an indoor point, and indoor air transferred from another indoor point to the second heat exchange unit (120) can pass through the second heat exchange unit (120) and be discharged to another outdoor point.

Specifically, by performing the first step as described above, the temperature of the first heat exchanger (110) can be reduced and the temperature of the second heat exchanger (120) can be increased, and as seen in FIGS. 1 and 2, the 1-1 damper (311) can be opened and the 1-2 damper (312) can be closed, the 2-1 damper (321) can be opened and the 2-2 damper (322) can be closed, the 3-1 damper (331) can be opened and the 3-2 damper (332) can be closed, and the 4-1 damper (341) can be opened and the 4-2 damper (342) can be closed.

Accordingly, by the operation of the first blower (610), outside air is introduced into the 1-1 duct (411), and while flowing along the 1-1 duct (411), the outside air passing through the 1-1 damper (311) can be delivered to the first heat exchanger (110). At this time, moisture in the outside air can be adsorbed to the moisture absorbent of the first heat exchanger (110), thereby reducing the humidity of the outside air.

Additionally, air passing through the first heat exchanger (110) can flow along the 3-1 duct (431) and pass through the 3-1 damper (331) to be supplied indoors.

And, indoor air can be introduced into the 4-1 duct (441), pass through the 4-1 damper (341), and then be delivered to the second heat exchanger (120). At this time, moisture desorbed from the moisture absorbent of the second heat exchanger (120) can be delivered to the air passing through the second heat exchanger (120).

In addition, the air that has passed through the second heat exchanger (120) flows along the second-1 duct (421) and passes through the second-1 damper (321), and can be discharged to the outdoors according to the operation of the second blower (620).

In the third step, the refrigerant discharged from the compressor (710) passes through the four-way valve (210) and is delivered to the first heat exchanger (110), and the refrigerant that has passed through the first heat exchanger (110) can be delivered to the compressor (710) after sequentially passing through the second expansion valve (220), the second heat exchanger (120), and the four-way valve (210).

Specifically, when a control signal for performing the second mode is transmitted from the control unit to each configuration, the refrigerant discharged from the compressor (710) flows along the third pipe (530) and is then transmitted to the four-way valve (210), and the refrigerant whose flow direction is controlled by the four-way valve (210) can flow along the first pipe (510) and then be transmitted to the first heat exchange unit (110). At this time, the first heat exchange unit (110) can perform the same function as the condenser (720).

In addition, the refrigerant that has passed through the first heat exchange unit (110) flows into one end of the connecting pipe (550) and then passes through the second expansion valve (220) while flowing along the connecting pipe (550), and the refrigerant that has passed through the second expansion valve (220) can flow along the connecting pipe (550) to the other end of the connecting pipe (550) and be delivered to the second heat exchange unit (120). At this time, the second heat exchange unit (120) can perform the same function as the evaporator (740).

And, the refrigerant that has passed through the second heat exchanger (120) flows along the second pipe (520) and is then delivered to the four-way valve (210), and the refrigerant whose flow direction is controlled by the four-way valve (210) can flow along the fourth pipe (540) and then be delivered to the compressor (710).

In the fourth step, the temperature of the first heat exchange unit (110) increases and the temperature of the second heat exchange unit (120) decreases, moisture desorption is performed in the first heat exchange unit (110) and moisture adsorption is performed in the second heat exchange unit (120), so that the humidity of the air passing through the first heat exchange unit (110) increases and the temperature and humidity of the air passing through the second heat exchange unit (120) can decrease.

In the fourth stage, outside air transferred from an outdoor point to the second heat exchange unit (120) can pass through the second heat exchange unit (120) and be supplied to an indoor point, and indoor air transferred from another indoor point to the first heat exchange unit (110) can pass through the first heat exchange unit (110) and be discharged to another outdoor point.

Specifically, by performing the third step as described above, the temperature of the first heat exchanger (110) can be increased and the temperature of the second heat exchanger (120) can be decreased, and as seen in FIGS. 3 and 4, the first-first damper (311) can be closed and the first-second damper (312) can be opened, the second-first damper (321) can be closed and the second-second damper (322) can be opened, the third-first damper (331) can be closed and the third-second damper (332) can be opened, and the fourth-first damper (341) can be closed and the fourth-second damper (342) can be opened.

Accordingly, by the operation of the first blower (610), outside air is introduced into the upper part of the first-first duct (411), then into the first-second duct (412), and while flowing along the first-second duct (412), the outside air passing through the first-second damper (312) can be delivered to the second heat exchanger (120). At this time, moisture in the outside air can be adsorbed to the moisture absorbent of the second heat exchanger (120), thereby reducing the humidity of the outside air.

In addition, air passing through the second heat exchanger (120) flows into the upper part of the 3-1 duct (431) and then flows into the 3-2 duct (432), and while flowing along the 3-2 duct (432), passes through the 3-2 damper (332) and can be supplied to the interior.

And, the indoor air can be introduced into the lower part of the 4-1 duct (441), then introduced into the 4-2 duct (442), and while flowing along the 4-2 duct (442), pass through the 3-2 duct (432), and then be delivered to the first heat exchange unit (110). At this time, the moisture desorbed from the moisture absorbent of the first heat exchange unit (110) can be delivered to the air passing through the first heat exchange unit (110).

In addition, air passing through the first heat exchanger (110) flows into the lower part of the first-1 duct (411) and then into the second-2 duct (422), flows along the second-2 duct (422) and passes through the second-2 damper (322), and can be discharged to the outside according to the operation of the second blower (620).

By implementing a refrigeration cycle using the first heat exchanger (110) and the second heat exchanger (120) that perform dehumidification through valve switching of the four-way valve (210) without using a separate pump as described above, a refrigeration cycle for cooling and a refrigeration cycle for dehumidification are performed in one system, so that ventilation, dehumidification, and cooling can be performed simultaneously, thereby improving the dehumidification and cooling efficiency.

In addition, since the heat source is obtained from the compressor (710) of the electric compression type refrigeration cycle, the latent heat load generated by ventilation is removed through the dehumidification process, and waste heat is used as the heat source required to remove the latent heat load, thereby improving the total energy efficiency of the system.

The above description of the present invention is for illustrative purposes, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical idea or essential features of the present invention. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single component may be implemented in a distributed manner, and likewise, components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the claims described below, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

110: 1st heat exchanger 120: 2nd heat exchanger
210: Four-way valve 220: Second expansion valve
311: Damper 1-1 312: Damper 1-2
321: 2-1 damper 322: 2-2 damper
331: 3-1 damper 332: 3-2 damper
341: 4-1 damper 342: 4-2 damper
411: Duct 1-1 412: Duct 1-2
421: Duct 2-1 422: Duct 2-2
431: Duct 3-1 432: Duct 3-2
441: Duct 4-1 442: Duct 4-2
510: 1st pipe 520: 2nd pipe
530: 3rd pipe 540: 4th pipe
550: connecting pipe 610: first blower
620: Second blower 710: Compressor
720: Condenser 730: First expansion valve
740: Evaporator 751: First cooling pipe
752: Second cooling pipe 753: Third cooling pipe
754: 4th cooling pipe

Claims (13)

A first heat exchanger for dehumidifying or humidifying the passing air;
A second heat exchanger that dehumidifies or humidifies the air passing through it, and alternately dehumidifies or humidifies it with the first heat exchanger;
A refrigeration unit including a compressor, an evaporator, a first expansion valve which is an expansion valve, and a condenser;
A four-way valve connected to the compressor, transferring refrigerant discharged from the compressor to the first heat exchange unit or the second heat exchange unit, and transferring refrigerant discharged from the first heat exchange unit or the second heat exchange unit to the compressor;
A first damper unit for transmitting outside air to the first heat exchange unit or the second heat exchange unit;
A second damper unit that transmits air discharged from the first heat exchange unit or the second heat exchange unit to the outdoors;
A third damper section that delivers dehumidified air to the room while passing through the first heat exchange section or delivers indoor air to the first heat exchange section; and
A ventilation and cooling system for removing latent heat, characterized by including a fourth damper unit that delivers dehumidified air to a room while passing through the second heat exchange unit or delivers indoor air to the second heat exchange unit.
In claim 1,
A latent heat removal ventilation and cooling system of a refrigerant-to-adsorbent direct heat exchange type, characterized in that it further includes a second expansion valve having one side connected to the first heat exchanger and the other side connected to the second heat exchanger as an expansion valve.
In claim 1,
A latent heat removal ventilation and cooling system of a refrigerant-to-adsorbent direct heat exchange method, characterized in that the first heat exchanger and the second heat exchanger alternately perform adsorption and desorption on moisture in the air passing therethrough, respectively.
delete In claim 1,
The above first damper part,
A first damper for controlling outside air flowing from a point outside to the first heat exchanger; and
A latent heat removal ventilation cooling system characterized by having first and second dampers for controlling outside air flowing from an outdoor location to the second heat exchanger using a refrigerant-adsorbent direct heat exchange method.
In claim 1,
The above second damper part,
A second-1 damper for controlling outside air flowing from another point outside to the second heat exchanger; and
A latent heat removal ventilation cooling system using a refrigerant-adsorbent direct heat exchange method, characterized by having a second damper for controlling outside air flowing from an outdoor point to the first heat exchanger.
In claim 1,
The above third damper part,
A 3-1 damper that controls air flowing from the first heat exchanger to a point in the room; and
A latent heat removal ventilation cooling system characterized by having a 3-2 damper for controlling air flowing from another point indoors to the first heat exchanger, wherein the refrigerant-to-adsorbent direct heat exchange method is used.
In claim 1,
The above fourth damper section,
A 4-1 damper for controlling air flowing from another point in the room to the second heat exchanger; and
A latent heat removal ventilation cooling system using a refrigerant-adsorbent direct heat exchange method, characterized by having a 4-2 damper for controlling air flowing from the second heat exchanger to a point indoors.
In claim 1,
A first blower formed outdoors and connected to the first damper section; and
A latent heat removal ventilation cooling system characterized in that it further includes a second blower formed outdoors and connected to the second damper section.
In claim 1,
A ventilation and cooling system for latent heat removal of a refrigerant-to-adsorbent direct heat exchange method, characterized in that it further includes a control unit that transmits a control signal to the four-way valve, the first damper unit, the second damper unit, the third damper unit, or the fourth damper unit.
In a ventilation cooling method using a latent heat removal ventilation cooling system of direct heat exchange between refrigerant and adsorbent of claim 2,
A first step in which the refrigerant discharged from the compressor passes through the four-way valve and is delivered to the second heat exchanger, and the refrigerant passing through the second heat exchanger sequentially passes through the second expansion valve, the first heat exchanger, and the four-way valve and is then delivered to the compressor;
A second step in which the temperature of the first heat exchanger decreases, the temperature of the second heat exchanger increases, moisture adsorption is performed in the first heat exchanger, and moisture desorption is performed in the second heat exchanger, thereby decreasing the temperature and humidity of air passing through the first heat exchanger and increasing the humidity of air passing through the second heat exchanger;
A third step in which the refrigerant discharged from the compressor passes through the four-way valve and is delivered to the first heat exchanger, and the refrigerant passing through the first heat exchanger passes through the second expansion valve, the second heat exchanger, and the four-way valve sequentially and is then delivered to the compressor; and
A fourth step is included in which the temperature of the first heat exchanger increases, the temperature of the second heat exchanger decreases, moisture desorption is performed in the first heat exchanger, and moisture adsorption is performed in the second heat exchanger, thereby increasing the humidity of air passing through the first heat exchanger and decreasing the temperature and humidity of air passing through the second heat exchanger.
A ventilation and cooling method characterized in that the first to fourth steps are sequentially repeated and performed.
In claim 11,
A ventilation and cooling method characterized in that, in the second step, outside air transferred from an outdoor point to the first heat exchanger is supplied to an indoor point through the first heat exchanger, and indoor air transferred from another indoor point to the second heat exchanger is discharged to another outdoor point through the second heat exchanger.
In claim 11,
A ventilation and cooling method characterized in that, in the fourth step, outside air transferred from an outdoor point to the second heat exchanger passes through the second heat exchanger and is supplied to an indoor point, and indoor air transferred from another indoor point to the first heat exchanger passes through the first heat exchanger and is discharged to another outdoor point.