KR20130119655A

KR20130119655A - Dehumidified system and method for dehumidification using the system

Info

Publication number: KR20130119655A
Application number: KR1020120042625A
Authority: KR
Inventors: 전창덕
Original assignee: 한국교통대학교산학협력단
Priority date: 2012-04-24
Filing date: 2012-04-24
Publication date: 2013-11-01

Abstract

The present invention relates to a dehumidification system and an operation method thereof. More specifically, the dehumidification system includes a compressor compressing a drawn refrigerant; a condenser coil installed in a plurality of rows, wherein a high pressure and high temperature refrigerant discharged from the compressor is drawn and heats the air drawn from the outside; an expansion valve discharging a low pressure and low temperature refrigerant by expanding the refrigerant discharged from the condenser coil; a dehumidification coil in which the refrigerant discharged from the expansion valve is drawn and removes moisture of the humid air drawn from the outside by being evaporated; an electric valve controlling the refrigerant drawn into the condenser coil by being installed on one or more front ends among a plurality of rows included in the condenser coil; a three way valve converting the flowing direction of the refrigerant by being included on a plurality of rear ends including the dehumidification coil; a control valve drawing the refrigerant discharged from the compressor with heat in which frosting is generated when the frosting is generated in one among the rows forming the dehumidification coil; and a blower sucking the humid air into the dehumidification system or discharging the humid air in order to perform heat exchange in the dehumidification coil and the condenser coil. [Reference numerals] (AA) All heat perform evaporating function;(BB) Wet air;(CC) Inflow air;(DD) All heat perform condensing function

Description

Dehumidified system and method for dehumidification using the system

The present invention relates to a dehumidifier and a method of operating the dehumidifier. More specifically, efficient dehumidification operation is possible in the temperature range near 25 ° C. (high temperature condition), the temperature range near 15 ° C. (medium temperature condition), and the temperature range near 5 ° C. (low temperature condition) as well as outside temperature. When defrosting occurs when the dehumidification coil is operated at low temperature conditions when 0 ~ 5 ℃ occurs, the present invention relates to a dehumidifier capable of dehumidifying operation simultaneously with defrosting.

The test conditions for evaluating the performance of the dehumidifier specified in KS C 9317 (Dehumidifier) are the standard condition of dry bulb temperature 27 ℃, overload condition of 32 ℃, low temperature condition of 18 ℃ (type A), low temperature condition of 5 ℃ (type B). )to be. However, it is difficult to manufacture a dehumidifier with excellent dehumidification performance in all temperature ranges as in the above test conditions. Therefore, existing dehumidifiers are manufactured to effectively dehumidify only in a specific temperature range.

1 is a schematic view illustrating a dehumidifying method of a general dehumidifier according to the prior art. As shown in FIG. 1, the dehumidifier unit 90 includes a compressor 10, a high temperature, high pressure refrigerant pipe 20, The reheat coil (condenser) 30, expansion valve 40, dehumidifying coil (evaporator) 50, low temperature, low pressure refrigerant pipe 60, water tank 70, blower fan (80).

When the blower fan 80 is operated, the humid air is introduced into the dehumidifying coil 50 of the dehumidifier unit 90 to contact the surface of the cold dehumidifying coil 50 to generate condensed water to remove moisture of the humid air. The air cooled while passing through the dehumidification coil 50 receives the condensation heat while passing through the reheat coil 30 and is discharged to the indoor space after the temperature is raised.

When the dehumidifier of this structure is dehumidified while maintaining the temperature of the dehumidification space at a low temperature condition, for example, 0 ° C to 5 ° C, frost is easily formed in the dehumidification coil, so frequent defrosting operation is required. Therefore, in such a case, the compressor should be stopped to perform natural defrosting or to be manufactured using a heat pump to reverse defrost the product. However, since the dehumidification can no longer be performed during natural defrosting or reverse cycle defrosting, the overall dehumidifying performance is inevitably reduced.

In addition, when the high temperature dehumidifier designed for the temperature range of 25 ℃ and the dehumidification operation is used at low temperature near 5 ℃, the evaporation outside air temperature condition (5 ℃) of the dehumidification coil (evaporator) is much higher than the high temperature condition (25 ℃). While worse, condensation outside temperature conditions (5 ° C.) are very good. Therefore, the capacity of the reheating coil (condenser) is too high to condense the refrigerant at an appropriate level or higher, so that a proper high pressure is not formed, and thus there is a problem in that stable refrigeration cycle operating conditions cannot be secured.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, the present invention is a coil of the dehumidifier unit with one dehumidification coil (evaporator) consisting of one condensation coil composed of a plurality of rows and the same heat as the number of condensing coils And install a solenoid valve and a check valve on the heat inlet side and the outlet side of the condensation coil, respectively, to open and close the solenoid valve according to the ambient temperature conditions so that the size (capacity) of the condensation coil can be changed to optimal refrigeration. Cycle operation conditions can be secured, and in case of defrosting of the dehumidifying coil, a part of the high temperature and high pressure refrigerant from the compressor is alternately supplied to one of a plurality of rows constituting the dehumidifying coil by a period of time or a defrosting sensor. The purpose is to provide a dehumidifier capable of removing defrost and allowing continuous dehumidification. .

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments with reference to the accompanying drawings.

An object of the present invention, in the dehumidification system, a compressor for compressing the introduced refrigerant; provided with a plurality of heat, the high-temperature, high-pressure refrigerant discharged from the compressor is introduced into the condensation while heating the inlet air introduced from the outside; An expansion valve configured to expand the refrigerant discharged from the condensation coil and discharge the refrigerant having a low temperature and a low pressure; A dehumidifying coil provided with a plurality of heat and removing moisture of the wet air introduced from the outside while the refrigerant discharged from the expansion valve is introduced and evaporated; A solenoid valve provided at a front end of at least one of a plurality of rows provided in the condensation coil to control a refrigerant flowing into the condensation coil; A three-way valve provided at the rear end of the plurality of rows including the dehumidifying coil to change the flow direction of the refrigerant; A control valve for introducing the refrigerant discharged from the compressor into the heat generated when the frost occurs when any of the heat constituting the dehumidification coil occurs; And a blower that sucks and discharges the humid air into the dehumidification system so as to perform heat exchange in the dehumidification coil and the condensation coil.

The plurality of rows constituting the dehumidifying coil may be separated from each other and installed to face each other, and the plurality of rows constituting the dehumidification coil may be separated from each other and installed to face each other.

Refrigerant may be selectively introduced into some heat constituting the condensation coil by the solenoid valve depending on the temperature of the inlet air.

It may be characterized in that it further comprises an implantation detection sensor installed in a plurality of rows constituting the dehumidification coil to detect the formation of frost.

It may be characterized in that it further comprises an accumulator provided in the refrigerant pipe connecting the dehumidification coil and the compressor to prevent the liquid refrigerant from flowing into the compressor.

And a check valve provided in the refrigerant pipe connecting the compressor and the condensation coil to prevent a backflow of the refrigerant.

A drain pan for collecting condensed water condensed with moisture by a dehumidifying coil; And it may be characterized in that it further comprises a water tank for storing the condensed water collected in the drain pan.

It may be characterized in that it further comprises a drain pipe for connecting between the drain pan and the water tank.

A second object of the present invention is a compressor for compressing the introduced refrigerant; A condensing coil provided in the first row, the second row, and the third row, and heating the inflow air introduced from the outside while the condensed high temperature and high pressure refrigerant discharged from the compressor is introduced; An expansion valve configured to expand the refrigerant discharged from the condensation coil and discharge the refrigerant having a low temperature and a low pressure; A dehumidifying coil provided in a first row, a second row, and a third row and removing moisture of the wet air introduced from the outside while the refrigerant discharged from the expansion valve is introduced and evaporated; A solenoid valve provided at a front end of at least one of a plurality of rows provided in the condensation coil to control a refrigerant flowing into the condensation coil; A three-way valve provided at a rear end of the plurality of rows including the dehumidification coil to change the flow direction of the refrigerant; when an extraction occurs in any one of the heat constituting the dehumidification coil, the refrigerant discharged from the compressor is introduced into the heat generated by the defrosting coil. Control valves; And a blower that sucks and discharges the humid air into the dehumidification system so as to perform heat exchange in the dehumidification coil and the condensation coil.

According to a third aspect of the present invention, there is provided a method of operating a dehumidification system, comprising: discharging a refrigerant having a high temperature and a high pressure from a compressor when the inflow air introduced from the outside corresponds to an overload temperature condition; The high temperature and high pressure refrigerant discharged from the compressor flows into the first row, the second row and the third row of the condensing coil to condense, and heats the inlet air introduced from the outside; Discharging the refrigerant discharged from the condensation coil to the low temperature and low pressure refrigerant through the expansion valve; The refrigerant passing through the expansion valve is introduced into the first row, the second row and the third row of the dehumidifying coil to be evaporated, and dehumidified air is dehumidified; And the refrigerant discharged from the dehumidification coil can be achieved as an operating method of the dehumidification system comprising the step of flowing into the compressor via the accumulator.

According to a fourth aspect of the present invention, there is provided a method of operating a dehumidification system, the method comprising: discharging a refrigerant having a high temperature and a high pressure from a compressor when the inflow air introduced from the outside corresponds to a standard temperature condition; The high temperature and high pressure refrigerant discharged from the compressor is not introduced into the third row of the condensation coil by the solenoid valve, but is introduced into the first row and the second row to be condensed, and the inflow air introduced from the outside is heated; Discharging the refrigerant discharged from the condensation coil to the low temperature and low pressure refrigerant through the expansion valve; The refrigerant passing through the expansion valve is introduced into the first row, the second row and the third row of the dehumidifying coil to be evaporated, and dehumidified air is dehumidified; And the refrigerant discharged from the dehumidification coil can be achieved as an operating method of the dehumidification system comprising the step of flowing into the compressor via the accumulator.

According to a fifth aspect of the present invention, there is provided a method of operating a dehumidification system, comprising: discharging a refrigerant having a high temperature and a high pressure from a compressor when the inflow air introduced from the outside corresponds to a low temperature condition lower than a standard temperature; The high temperature and high pressure refrigerant discharged from the compressor flows into the first row without condensing into the second row and the third row of the condensing coil by the solenoid valve, and heats the inflow air introduced from the outside; Discharging the refrigerant discharged from the condensation coil to the low temperature and low pressure refrigerant through the expansion valve; The refrigerant passing through the expansion valve is introduced into the first row, the second row and the third row of the dehumidifying coil to be evaporated, and dehumidified air is dehumidified; And the refrigerant discharged from the dehumidification coil can be achieved as an operating method of the dehumidification system comprising the step of flowing into the compressor via the accumulator.

According to a sixth object of the present invention, in the method of operating the dehumidification system, when the inflow air introduced from the outside corresponds to a low temperature condition lower than the standard temperature and an frost is generated in some heat constituting the dehumidifying coil, Detecting specific heat in which implantation has occurred; Discharging the high temperature and high pressure refrigerant from the compressor; Sending a portion of the refrigerant discharged from the compressor by the control valve to the dehumidification coil side, and sending the remaining refrigerant to the condensation coil side; Refrigerant sent to the dehumidification coil side is introduced into a specific heat generated by the three-way valve to remove frost; Refrigerant sent to the condensation coil side is introduced into the first row without condensing into the second row and the third row of the condensation coil by the solenoid valve, the condensation, the inlet air flowing from the outside is heated; Discharging the refrigerant discharged from the condensation coil to the low temperature and low pressure refrigerant through the expansion valve; A step of combining the refrigerant passing through the expansion valve and the refrigerant discharged from the specific heat, inflowing into the heat of the dehumidifying coil except for the specific heat, and evaporating the moisture to enter the humidifying air; And the refrigerant discharged from the dehumidification coil can be achieved as an operating method of the dehumidification system comprising the step of flowing into the compressor via the accumulator.

The check valve provided in the refrigerant pipe connecting the compressor and the condensation coil may further comprise the step of preventing the back flow of the refrigerant.

A drain pan collecting condensate in which humid air is condensed by a dehumidifying coil; And storing the condensed water collected in the drain pan in the water tank.

As described above, the dehumidifier unit according to the present invention constitutes a dehumidifying coil with a plurality of heat, and when defrosting occurs in the dehumidifying coil, a condenser condenser heats one of the plurality of heat constituting the dehumidifying coil by a certain period of time or by a detection sensor. The remaining heat of the furnace sequentially or selectively flows the high-temperature, high-pressure refrigerant from the compressor to the evaporator has the effect of dehumidification and at the same time.

In addition, the condensing coil is composed of the same heat as the dehumidifying coil, and the solenoid valve and the check valve are installed on the heat inlet side and the outlet side of the condensing coil, respectively. It is possible to effectively dehumidify a single dehumidifier under high, medium and low temperature air conditions.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be appreciated by those skilled in the art that various other modifications and variations can be made without departing from the spirit and scope of the invention, All fall within the scope of the appended claims.

1 is a schematic diagram of a dehumidifying method of a dehumidifier according to the prior art;
Figure 2b is a flow chart of the operation method of the dehumidification system showing the overload temperature condition dehumidification operation method according to an embodiment of the present invention,
Figure 2b is a block diagram of a dehumidification system showing an overload temperature condition dehumidification operation method according to the present invention,
3A is a flowchart illustrating a method of operating a dehumidification system showing a method for operating a standard temperature condition dehumidification according to an embodiment of the present invention;
Figure 3b is a block diagram of a dehumidification system showing a standard temperature condition dehumidification operation method according to an embodiment of the present invention,
4A is a flowchart illustrating a method of operating a dehumidification system showing a method for operating a dehumidifying low temperature condition according to an embodiment of the present invention;
Figure 4b is a block diagram of a dehumidification system showing a low temperature temperature condition dehumidification operation method according to an embodiment of the present invention,
5A is a flowchart illustrating a method of operating a dehumidification system showing a simultaneous defrosting and dehumidifying operation method (dehumidification coil first row defrosting) at a low temperature temperature condition according to an embodiment of the present invention;
Figure 5b is a block diagram of a dehumidification system showing a simultaneous defrosting and dehumidification operation method (dehumidification coil first row defrost) in a low temperature temperature condition according to an embodiment of the present invention,
FIG. 6A is a flowchart illustrating a method of operating a dehumidification system showing a simultaneous defrost and dehumidification operation method (dehumidification coil second row defrost) under a low temperature condition according to an embodiment of the present invention; FIG.
Figure 6b is a block diagram of a dehumidification system showing a simultaneous defrosting and dehumidification operation method (dehumidification coil second row defrost) in a low temperature temperature condition according to an embodiment of the present invention,
7A is a flowchart illustrating a method of operating a dehumidification system showing a simultaneous defrosting and dehumidifying operation method (dehumidification coil third row defrosting) at a low temperature temperature condition according to an embodiment of the present invention;
7B is a block diagram of a dehumidification system showing a simultaneous defrosting and dehumidifying operation method (dehumidification coil third row defrosting) at a low temperature temperature condition according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

The same reference numerals are used for portions having similar functions and functions throughout the drawings. Throughout the specification, when a part is connected 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 element in between. In addition, the inclusion of an element does not exclude other elements, but may include other elements, unless specifically stated otherwise.

Figure 2a shows a flow chart of the operation method of the dehumidification system when the dehumidification operation in an overload condition according to an embodiment of the present invention, Figure 2b is a case of performing the dehumidification operation in an overload condition according to an embodiment of the present invention The configuration diagram of the dehumidification system is shown. In the case of overload operation conditions, the outdoor air temperature is high and the capability of the condensation coil is greatly demanded. As shown in FIGS. 2A and 2B, the high temperature and high pressure refrigerant from the compressor 150 is divided into the refrigerant pipes L2, L3, and L4 through the refrigerant pipe L1 (S1), and then the first row of the condensation coil 200. 200-1, the second column 200-2, and the third column 200-3 are respectively introduced (S2).

At this time, since the solenoid valves 750-1 and 750-2 maintain the open state, the entire condensation coil 200 can be used as a condenser, thus ensuring condensation capacity that meets an overload condition. The refrigerant that has undergone the condensation process in the condensation coil 200 comes out along the refrigerant pipes L5, L6, and L7 and is combined in the refrigerant pipe L8.

The combined refrigerant passes through the expansion valve 300 and becomes a low-temperature, low-pressure refrigerant and flows along the refrigerant pipe L9 (S3). Then, the refrigerant is branched into the refrigerant pipes L10, L11, and L12 and the first row of the dehumidifying coil 400 (400-). 1), the evaporation process is performed while passing through the second row 400-2 and the third row 400-3, respectively. The refrigerant passing through the dehumidification coil 400 is evaporated by absorbing heat from the humid air, and the humid air is dehumidified by condensing moisture contained in the humid air during the process of depriving heat (S4).

The refrigerant evaporated in the first column 400-1 of the dehumidification coil 400 flows along the refrigerant pipe L13, the first three-way valve 850-1, and the refrigerant pipe L16, and evaporates in the second column 400-2. The refrigerant flows through the refrigerant pipe L14, the second three-way valve 850-2, and the refrigerant pipe L17, and the refrigerant evaporated in the third row 400-3 is the refrigerant pipe L15, the third three-way valve 850-3, After flowing along the refrigerant pipe L18, they are combined in the refrigerant pipe L19 and sent to the accumulator 500.

The refrigerant passing through the accumulator 500 flows into the compressor 150 to complete the cycle. The condensed water condensed on the surface of the dehumidifying coil 400 is collected in the drain pan 920 and then stored in the water tank 800 via the drain 930 and the water pipe L24 (S5). This process is repeated repeatedly if the outdoor air is in an overload condition (S6).

3A is a flowchart illustrating a method of operating a dehumidification system when dehumidifying at standard conditions according to an embodiment of the present invention, and FIG. 3B is a diagram illustrating a dehumidification operation at standard conditions according to an embodiment of the present invention. The configuration diagram of the system is shown. In the case of the standard operating conditions, the outdoor air temperature is lower than in the case of the overload operating conditions, and a relatively small size of the condensation coil is required. 3A and 3B, the high temperature and high pressure refrigerant from the compressor 150 is divided into the refrigerant pipes L2 and L3 through the refrigerant pipe L1 (S10), and then the first row of the condensation coil 200 ( 200-1) and flow into the second row 200-2, respectively. At this time, the solenoid valve 750-1 is in the open state, and the solenoid valve 750-2 is in the closed state, so the first row 200-1 and the second row 200-2 of the condensation coil 200 are maintained. It acts as a condenser and can therefore be adjusted to a condenser size that meets the standard conditions.

The refrigerant that has performed the condensation process in the first row 200-1 and the second row 200-2 of the condensation coil 200 (S20) flows along the refrigerant pipes L5 and L6 and then merges in the refrigerant pipe L8. The combined refrigerant passes through the expansion valve 300 to become a low temperature and low pressure refrigerant (S30), passes through the refrigerant pipe L9, branches from the refrigerant pipes L10, L11, and L12, and then opens the first row 400-1 of the dehumidification coil 400. ), The second row 400-2, and the third row 400-3 are respectively passed through the evaporation process. The refrigerant passing through the dehumidification coil 400 is evaporated by absorbing heat from the humid air, and the humid air is dehumidified by condensing moisture contained in the humid air during the process of depriving heat (S40).

The refrigerant evaporated in the first column 400-1 of the dehumidification coil 400 flows along the refrigerant pipe L13, the first three-way valve 850-1, and the refrigerant pipe L16, and evaporates in the second column 400-2. The refrigerant flows through the refrigerant pipe L14, the second three-way valve 850-2, and the refrigerant pipe L17, and the refrigerant evaporated in the third row 400-3 is the refrigerant pipe L15, the third three-way valve 850-3, After flowing along the refrigerant pipe L18, they are combined in the refrigerant pipe L19 and sent to the accumulator 500. The refrigerant passing through the accumulator 500 is introduced into the compressor 150 to complete the cycle. The condensed water condensed on the surface of the dehumidifying coil 400 is collected in the drain pan 920 and then stored in the water tank 800 via the drain 930 and the water pipe L24 (S50). This process is repeated if the outdoor air is in the standard temperature conditions (S60).

4A is a flowchart illustrating a method of operating a dehumidification system when dehumidifying at a low temperature condition according to an embodiment of the present invention, and FIG. 4B is a diagram illustrating a dehumidification operation at a low temperature condition according to an embodiment of the present invention. The configuration diagram of the system is shown. In low temperature operating conditions, the outdoor air temperature is lower than in standard operating conditions, requiring a relatively small size of the condensing coil.

4A and 4B, the high temperature and high pressure refrigerant from the compressor 150 is transferred to the first row 200-1 of the condensing coil 200 through the refrigerant pipe L1 and the refrigerant pipe L2 (S100). Inflow. At this time, since the solenoid valves 750-1 and 750-2 maintain the closed state, only the first row 200-1 of the condensation coil 200 serves as a condenser, and thus the condenser size can be adjusted to a suitable temperature condition. (S200). The refrigerant that has performed the condensation process in the first column 200-1 of the condensation coil 200 passes through the expansion pipe 300 after the refrigerant pipes L5 and L8 and becomes a low temperature, low pressure refrigerant (S300).

The refrigerant, which has become low temperature and low pressure while passing through the expansion valve 300, flows along the refrigerant pipe L9 and branches to the refrigerant pipes L10, L11, and L12, so that the first row 400-1 and the second row of the dehumidification coil 400 are formed. 400-2 and the evaporation process is performed while passing through the third column 400-3, respectively. The refrigerant passing through the dehumidification coil 400 is evaporated by absorbing heat from the humid air, and the humid air is dehumidified by condensing moisture contained in the humid air during the process of depriving heat (S400).

The refrigerant passing through the accumulator 500 is introduced into the compressor 150 to complete the cycle. The condensed water condensed on the surface of the dehumidifying coil 400 is collected in the drain pan 920 and then stored in the water tank 800 via the drain 930 and the water pipe L24 (S500). This process is repeated if the outdoor air is in a low temperature condition (S600).

5A is a flowchart illustrating a method of operating a dehumidification system that performs dehumidification operation simultaneously with defrosting (dehumidification coil first row defrost) when dehumidification operation occurs in a dehumidification coil when the dehumidification system is operated in a low temperature condition according to the present invention. 5B is a block diagram of a dehumidification system that performs dehumidification operation simultaneously with defrosting (first defrosting of the dehumidification coil) when dehumidification operation occurs in the dehumidification coil during the dehumidification operation of the dehumidification system according to the present invention. . As illustrated in FIGS. 5A and 5B, the implantation detection sensor installed in the dehumidification coil detects the implantation in the first row of the dehumidification coil (S100-1).

Then, some of the high temperature and high pressure refrigerant (S200-1) from the compressor 150 to the refrigerant pipe L20 by the control valve 800, the remaining refrigerant passes through the refrigerant pipe L1, the first solenoid valve (750-) Since 1) and the second solenoid valve 750-2 are kept closed, they can flow only into the refrigerant pipe L2 and flow into the first row 200-1 of the condensation coil 200 (S300-1).

The refrigerant flowing along the refrigerant pipe L20 is metered by the control valve 800 and then passes through the refrigerant pipe L21 and the first three-way valve 850-1 to the first row 400-1 of the dehumidifying coil 400 through the refrigerant pipe L13. ) Is dissolved in the frost formed on the surface of the first row 400-1 of the dehumidification coil. The dehumidified coil transfers heat required to remove frost from the first column 400-1, and the condensed refrigerant exits the first row 400-1 of the dehumidified coil and flows along the refrigerant pipe L10.

Meanwhile, the refrigerant that has performed the condensation process in the first column 200-1 of the condensation coil 200 passes through the expansion pipe 300 after passing through the refrigerant pipes L5 and L8 and becomes a low temperature, low pressure refrigerant (S400-1). ). The refrigerant, which is in a low temperature and low pressure state while passing through the expansion valve 300, flows along the refrigerant pipe L9. After the coalescing with the refrigerant from the refrigerant pipe L10, the refrigerant branches to the refrigerant pipe L11 and the refrigerant pipe L12, respectively. 400-2) and the third column 400-3 are introduced to perform an evaporation process. The refrigerant passing through the dehumidification coil 400 is evaporated by absorbing heat from the humid air, and the humid air is dehumidified by condensing moisture contained in the humid air during the process of depriving heat (S500-1).

The refrigerant evaporated in the second column 400-2 of the dehumidification coil 400 flows along the refrigerant pipe L14, the second three-way valve 850-2, and the refrigerant pipe L17, and is evaporated in the third column 400-3. The coolant flows along the coolant pipe L15, the third three-way valve 850-3, and the coolant pipe L18, and is then combined in the coolant pipe L19 to be sent to the accumulator 500 (S600-1). The refrigerant passing through the accumulator 500 is introduced into the compressor 150 to complete a cycle capable of dehumidifying and dehumidifying at the same time (S700-1).

Figure 6a is a method of operating a dehumidification system showing a dehumidification operation method simultaneously with defrosting (dehumidification coil second row defrost) when the dehumidification system in the dehumidification operation when the dehumidification system in a low temperature condition according to an embodiment of the present invention. 6B is a flowchart illustrating a dehumidification operation method simultaneously with defrosting (dehumidification coil second row defrosting) when dehumidification operation occurs in a dehumidifying coil when the dehumidification system is operated in a low temperature condition according to one embodiment of the present invention. The schematic diagram of the dehumidification system shown is shown. First, the implantation detection sensor installed in the dehumidification coil detects the implantation in the second row of the dehumidification coil (S100-2).

As shown in FIGS. 6A and 6B, some of the high temperature and high pressure refrigerants S200-2 from the compressor 150 pass through the refrigerant pipe L20, and the remaining refrigerant passes through the refrigerant pipe L1, and then the first solenoid valve 750. -1) and the second solenoid valve 750-2 are kept closed, so that only the refrigerant pipe L2 can flow to flow into the first row 200-1 of the condensation coil 200 (S300-2).

The refrigerant flowing along the refrigerant pipe L20 is metered by the control valve 800 and then passes through the refrigerant pipe L22 and the second three-way valve 850-2 to the second row of the dehumidifying coil 400 through the refrigerant pipe L14 (400-2). ) Is dissolved in the frost formed on the surface of the dehumidification coil second row (400-2). The dehumidified coil transfers heat necessary to remove frost from the second column 400-2, and the condensed refrigerant exits the second column 400-2 of the dehumidification coil and flows along the refrigerant pipe L11.

Meanwhile, the refrigerant that has performed the condensation process in the first row 200-1 of the condensation coil 200 passes through the refrigerant pipes L5 and L8 and then passes through the expansion valve 300 to become a refrigerant having a low temperature and low pressure (S400-2). ). The refrigerant, which has been in a state of low temperature and low pressure while passing through the expansion valve 300, flows along the refrigerant pipe L9. After being combined with the refrigerant from the refrigerant pipe L11, the refrigerant branches to the refrigerant pipe L10 and the refrigerant pipe L12, respectively. 400-1) and the third column 400-3 are introduced to perform an evaporation process.

The refrigerant passing through the dehumidification coil 400 is evaporated by absorbing heat from the humid air, and the humid air is dehumidified by condensing moisture contained in the humid air during the process of depriving heat (S500-1). The refrigerant evaporated in the first column 400-1 of the dehumidification coil 400 flows along the refrigerant pipe L13, the first three-way valve 850-1, and the refrigerant pipe L16, and evaporates in the third row 400-3. The refrigerant flows along the refrigerant pipe L15, the third three-way valve 850-3, and the refrigerant pipe L18, and then is combined in the refrigerant pipe L19 to be sent to the accumulator 500 (S600-2). The refrigerant passing through the accumulator 500 is introduced into the compressor 150 to complete a cycle capable of dehumidifying and dehumidifying at the same time (S700-2).

7A is a method of operating a dehumidification system showing a dehumidification operation method simultaneously with defrosting (dehumidification coil third row defrosting) when dehumidification operation occurs in a dehumidification coil when the dehumidification system is operated in a low temperature condition according to an embodiment of the present invention. 7B illustrates a dehumidification operation method simultaneously with defrosting (dehumidification coil third row defrosting) when dehumidification coils are defrosted during dehumidification operation of the dehumidification system in a low temperature condition according to an embodiment of the present invention. The schematic diagram of the dehumidification system shown is shown. First, the implantation detection sensor installed in the dehumidification coil detects the implantation of the third row of the dehumidification coil (S100-3).

As shown in FIGS. 7A and 7B, some of the high temperature and high pressure refrigerants S200-3 from the compressor 150 pass through the refrigerant pipe L20, and the remaining refrigerant passes through the refrigerant pipe L1, and then the first solenoid valve ( Since the 750-1 and the second solenoid valve 750-2 are kept closed, only the refrigerant pipe L2 may flow to flow into the first row 200-1 of the condensing coil 200 (S300-3). .

The refrigerant flowing along the refrigerant pipe L20 is metered by the control valve 800 and then passes through the refrigerant pipe L23 and the third three-way valve 850-3 through the refrigerant pipe L15 in the third row (400-3) of the dehumidification coil 400. ) Is dissolved in the frost formed on the surface of the dehumidification coil third row (400-3). The dehumidified coil 3rd row 400-3 transfers heat necessary to remove frost and the condensed refrigerant exits the 3rd row 400-3 of the dehumidified coil and flows along the refrigerant pipe L12.

On the other hand, the refrigerant that has performed the condensation process in the first column 200-1 of the condensation coil 200 passes through the expansion pipe 300 after the refrigerant pipes L5 and L8 and becomes a low temperature and low pressure refrigerant (S400-3). ). The refrigerant, which is in a low temperature low pressure state through the expansion valve 300, flows along the refrigerant pipe L9. After the coalescing with the refrigerant from the refrigerant pipe L12, the refrigerant branches to the refrigerant pipe L10 and the refrigerant pipe L11, respectively. -1) and the second column 400-2 is introduced to perform an evaporation process.

The refrigerant passing through the dehumidification coil 400 is evaporated by absorbing heat from the humid air, and the humid air is dehumidified by condensing moisture contained in the humid air during the process of depriving heat (S500-3). The refrigerant evaporated in the first column 400-1 of the dehumidification coil 400 flows along the refrigerant pipe L13, the first three-way valve 850-1, and the refrigerant pipe L16, and is evaporated in the second column 400-2. The coolant flows along the coolant pipe L14, the second three-way valve 850-2, and the coolant pipe L17, and is then combined in the coolant pipe L19 to be sent to the accumulator 500 (S600-3). The refrigerant passing through the accumulator 500 is introduced into the compressor 150 to complete a cycle capable of dehumidifying and dehumidifying at the same time (S700-3).

As described above, the dehumidifier unit of the present invention alternates defrosting operation such as reverse cycle operation by alternately operating the evaporator and the condenser by alternating the first row, the second row, and the third row of the dehumidifying coils by a predetermined time interval or an idea sensor. The basic technical idea is to allow dehumidification and continuous dehumidification without defrosting and to change the size of the condensation coil according to the outside temperature.

Although the present invention has been described above by using a preferred embodiment of the present invention, the principles of the present invention are not limited by the scope described in the above embodiments, and those skilled in the art can make various modifications within the technical scope defined by the claims. Modifications may be made and such modifications should also be construed as falling within the scope of the present invention.

100: dehumidifier unit 150: compressor
200: condensing coil 200-1: condensing coil first row
200-2: second row of condensing coil 200-3: third row of condensing coil
300: expansion valve 400: dehumidification coil
400-1: dehumidification coil first row 400-2: dehumidification coil second row
400-3: dehumidification coil third row 500: accumulator
600: water tank 700-1, 700-2: check valve
750-1, 750-2: Solenoid valve 800: Control valve
850-1: first three-way valve 850-2: second three-way valve
850-3: third three-way valve 900: blower
910: grill 920: drain pan
930: drain port L1, L2 ~ L22, L23: refrigerant piping
L24: water pipe

Claims

In the dehumidification system,
A compressor for compressing the introduced refrigerant;
A condensation coil provided with a plurality of heat and heating the inflow air introduced from the outside while condensed by the high-temperature and high-pressure refrigerant discharged from the compressor;
An expansion valve configured to expand the refrigerant discharged from the condensation coil and discharge the refrigerant having a low temperature and a low pressure;
A dehumidifying coil provided with a plurality of heat and removing moisture of the wet air introduced from the outside while the refrigerant discharged from the expansion valve is introduced and evaporated;
A solenoid valve provided at a front end of at least one of a plurality of heats provided in the condensation coil to control a refrigerant flowing into the condensation coil;
A three-way valve provided at a rear end of a plurality of rows provided with the dehumidifying coil to change a flow direction of the refrigerant;
A control valve which introduces the refrigerant discharged from the compressor into the heat generated when the defrosting occurs in any one of the heat constituting the dehumidifying coil; And
And a blower that sucks and discharges the humid air into the dehumidification system to perform heat exchange between the dehumidification coil and the condensation coil.

The method of claim 1,
The plurality of rows constituting the dehumidifying coil are separated from each other and installed oppositely,
The dehumidification system, characterized in that the plurality of heat constituting the condensation coil is installed opposite to each other.

The method of claim 1,
Dehumidifier system, characterized in that the refrigerant flows into the partial heat constituting the condensation coil selectively depending on the temperature of the inlet air by the solenoid valve.

The method of claim 1,
And a frost detection sensor installed in a plurality of rows constituting the dehumidification coil to detect that frost is formed.

The method of claim 1,
And a accumulator provided in the refrigerant pipe connecting the dehumidification coil and the compressor to prevent the liquid refrigerant from flowing into the compressor.

The method of claim 1,
And a check valve provided in the refrigerant pipe connecting the compressor and the condensation coil to prevent backflow of the refrigerant.

The method of claim 1,
A drain pan collecting condensed water condensed with moisture by the dehumidifying coil; And
And a water tank for storing condensate collected in the drain pan.

And a drain pipe connecting the drain pan and the water tank.

In the dehumidification system,
A compressor for compressing the introduced refrigerant;
A condensing coil provided in a first row, a second row, and a third row, and configured to heat the inflow air introduced from the outside while condensing the high-temperature and high-pressure refrigerant discharged from the compressor;
An expansion valve configured to expand the refrigerant discharged from the condensation coil and discharge the refrigerant having a low temperature and a low pressure;
A dehumidifying coil provided in a first row, a second row, and a third row and removing moisture of the wet air introduced from the outside while the refrigerant discharged from the expansion valve is introduced and evaporated;
A solenoid valve provided at a front end of at least one of a plurality of heats provided in the condensation coil to control a refrigerant flowing into the condensation coil;
A three-way valve provided at a rear end of a plurality of rows provided with the dehumidifying coil to change a flow direction of the refrigerant;
A control valve which introduces the refrigerant discharged from the compressor into the heat generated when the defrosting occurs in any one of the heat constituting the dehumidifying coil; And
And a blower that sucks and discharges the humid air into the dehumidification system to perform heat exchange between the dehumidification coil and the condensation coil.

In the operation method of the dehumidification system,
When the inflow air from outside is subject to overload temperature condition,
Discharging the high temperature and high pressure refrigerant from the compressor;
The high temperature and high pressure refrigerant discharged from the compressor flows into the first row, the second row and the third row of the condensing coil to condense, and heats the inflow air introduced from the outside;
Discharging the refrigerant discharged from the condensation coil to the low temperature and low pressure refrigerant through an expansion valve;
The refrigerant passing through the expansion valve is introduced into the first row, the second row and the third row of the dehumidifying coil to be evaporated, and dehumidified air is introduced therein; And
And the refrigerant discharged from the dehumidification coil flows into the compressor via an accumulator.

In the operation method of the dehumidification system,
If the inflow air from outside is within the standard temperature conditions,
Discharging the high temperature and high pressure refrigerant from the compressor;
The high temperature and high pressure refrigerant discharged from the compressor is not introduced into the third row of the condensation coil by the solenoid valve, but is introduced into the first row and the second row to condense, and the inflow air introduced from the outside is heated;
Discharging the refrigerant discharged from the condensation coil to the low temperature and low pressure refrigerant through an expansion valve;
The refrigerant passing through the expansion valve is introduced into the first row, the second row and the third row of the dehumidifying coil to be evaporated, and dehumidified air is introduced therein; And
And the refrigerant discharged from the dehumidification coil flows into the compressor via an accumulator.

In the operation method of the dehumidification system,
If the inflow air from the outside falls under a cold temperature condition below the standard temperature,
Discharging the high temperature and high pressure refrigerant from the compressor;
The high temperature and high pressure refrigerant discharged from the compressor flows into the first row without condensing into the second row and the third row of the condensing coil by the solenoid valve, and heats the inflow air introduced from the outside;
Discharging the refrigerant discharged from the condensation coil to the low temperature and low pressure refrigerant through an expansion valve;
The refrigerant passing through the expansion valve is introduced into the first row, the second row and the third row of the dehumidifying coil to be evaporated, and dehumidified air is introduced therein; And
And the refrigerant discharged from the dehumidification coil flows into the compressor via an accumulator.

In the operation method of the dehumidification system,
If the inflow air from outside is a low temperature condition lower than the standard temperature, and some of the heat constituting the dehumidification coil is formed,
Detecting a specific heat in which an implantation has occurred in the implantation sensor;
Discharging the high temperature and high pressure refrigerant from the compressor;
Sending a part of the refrigerant discharged from the compressor by a control valve to a dehumidifying coil side, and sending the remaining refrigerant to the condensing coil side;
Refrigerant sent to the dehumidification coil side is introduced into a specific heat generated by the three-way valve to remove frost;
Refrigerant sent to the condensation coil side is introduced into the first row without condensing into the second row and the third row of the condensation coil by the solenoid valve, and condensed, the inlet air introduced from the outside is heated;
Discharging the refrigerant discharged from the condensation coil to the low temperature and low pressure refrigerant through an expansion valve;
The refrigerant passing through the expansion valve and the refrigerant discharged from the specific heat are combined to flow into the heat of the dehumidifying coil except for the specific heat, and to be evaporated to dehumidify the introduced humid air; And
And the refrigerant discharged from the dehumidification coil flows into the compressor via an accumulator.

The method according to any one of claims 10 to 13,
The plurality of rows constituting the dehumidification coil are installed opposite to each other and the plurality of heat constituting the condensation coil are separated from each other and installed oppositely installed.

The method according to any one of claims 10 to 13,
The check valve provided in the refrigerant pipe connecting the compressor and the condensation coil further comprises the step of preventing a back flow of the refrigerant.

The method according to any one of claims 10 to 13,
Collecting, by a drain pan, condensed water condensed with humid air by the dehumidifying coil; And
Storing the condensed water collected in the drain pan in a water tank.