WO2024080517A1

WO2024080517A1 - Drying apparatus

Info

Publication number: WO2024080517A1
Application number: PCT/KR2023/011229
Authority: WO
Inventors: 나중원; 김민수; 서국정
Original assignee: 삼성전자주식회사
Priority date: 2022-10-13
Filing date: 2023-08-01
Publication date: 2024-04-18

Abstract

A drying apparatus comprises: a main body; a drying chamber which is formed inside the main body; a circulation duct which supplies air, discharged from the drying chamber, to the drying chamber, thereby forming a circulation flow path for circulating air in the drying chamber; an evaporator which is provided in the circulation duct; a first condenser which is provided in the circulation duct; a second condenser which is provided outside the circulation duct; and a control valve which selectively supplies a refrigerant to the first condenser, wherein the control valve may block or enable the supplying of the refrigerant to the first condenser so as to control the air temperature in the drying chamber.

Description

drying device

The present disclosure relates to a drying device, and more specifically, to a drying device capable of controlling the temperature of air supplied into a drying room.

A drying device is a device for managing objects in a drying room, such as drying or cleaning them and removing odors from the objects.

The drying device may have devices that constitute a heat pump cycle, such as an evaporator, condenser, and compressor, therein. In the drying and/or cooling process, the air in the drying room may flow out of the drying room and be cooled and dehumidified through an evaporator and condenser. Then, the cooled and dehumidified air is returned to the drying room. In other words, the air circulates through the flow path that passes through the drying room and the machine room.

In the case of a closed circulation method, because the air is continuously circulated and heated inside the drying room, continuous heat accumulation may occur. The temperature of the air inside the drying room may increase due to continuous heat accumulation.

One aspect of the present disclosure provides a drying device with improved heat pump cycle operation rate.

One aspect of the present disclosure provides a drying device that can smoothly cool and dehumidify air supplied to a drying room.

The technical problem to be achieved in this document is not limited to the technical problem mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

A drying apparatus according to an example includes a main body, a drying chamber formed inside the main body, a circulation duct forming a circulation passage for circulating the air in the drying chamber by supplying air discharged from the drying chamber to the drying chamber, and the circulation duct. It includes an evaporator provided within, and a first condenser provided within the circulation duct. The drying device according to one example includes a second condenser provided outside the circulation duct and a control valve that selectively supplies refrigerant to the first condenser. The control valve blocks or supplies refrigerant to the first condenser to control the air temperature in the drying chamber.

The second condenser may be arranged in parallel with the first condenser so that the refrigerant passing through the control valve flows through one of the first condenser and the second condenser.

It may further include a compressor that compresses the refrigerant and is provided outside the circulation duct. The refrigerant passing through the control valve may pass through one of the first condenser and the second condenser and then circulate through the evaporator and the compressor to the control valve.

The control valve may be a three-way valve that flows the refrigerant compressed by the compressor into one of the second condenser and the first condenser.

The drying device according to one example may further include an expansion device provided upstream of the evaporator in the circulation direction of the refrigerant to expand the refrigerant that has passed through the first condenser or the second condenser.

A drying device according to an example includes a first refrigerant pipe that is provided to guide the refrigerant that has passed through the first condenser and has one end connected to the first condenser, and is provided to guide the refrigerant that has passed through the second condenser; A second refrigerant pipe having one end connected to the second condenser and the other end connected to the other end of the first refrigerant pipe, and the refrigerant flowing along the second refrigerant pipe to the first condenser through the first refrigerant pipe. It may further include a check valve provided in the first refrigerant pipe to prevent backflow.

The control valve may be provided to selectively introduce refrigerant that has passed through the second condenser into the first condenser.

The drying device according to one example may further include a compressor that compresses the refrigerant and is provided outside the circulation duct. The refrigerant passing through the second condenser flows into the control valve, and passes through the first condenser by the control valve, or is bypassed so as not to pass through the first condenser, and passes through the evaporator and the compressor to the second condenser. It can be cycled.

The control valve has a three-way valve connected to an inlet pipe through which the refrigerant passing through the second condenser flows, a first discharge pipe connected directly from the control valve to the evaporator, and a second discharge pipe connected to the first condenser. It could be a valve.

The drying device according to one example is an expansion device provided upstream of the evaporator in the circulation direction of the refrigerant to expand the refrigerant that has passed through the second condenser and the first condenser or the refrigerant that has passed through the second condenser. It may further include.

The drying device according to one example includes a first refrigerant pipe provided to guide the refrigerant that has passed through the first condenser and one end of which is connected to the first condenser, and the refrigerant that has passed through the three-way valve is directly transferred to the expansion device. A second refrigerant pipe, one end of which is connected to the three-way valve and the other end of which is connected to the other end of the first refrigerant pipe, and the refrigerant flowing through the second refrigerant pipe passes through the first refrigerant pipe to the first refrigerant pipe. It may further include a check valve provided in the first refrigerant pipe to prevent backflow to the condenser.

The control valve may be a four-way valve provided to allow the refrigerant passing through the second condenser to bypass the first condenser.

The drying device according to one example may further include an expansion device provided upstream of the evaporator in the circulation direction of the refrigerant to expand the refrigerant toward the evaporator. The four-way valve may be provided so that the refrigerant that has passed through the second condenser is directed directly to the expansion device, or the refrigerant that has passed through the second condenser is directed to the expansion device after passing through the first condenser. .

The drying device according to one example may further include a cooling fan provided outside the circulation duct to cool the second condenser, and a control unit that drives the cooling fan while the refrigerant passes through the second condenser.

The drying device according to one example may further include a control unit that operates the first condenser and the second condenser according to the air temperature inside the drying chamber.

A drying apparatus according to an example includes a main body, a drying chamber formed inside the main body, a circulation duct forming a circulation passage for circulating the air in the drying chamber by supplying air discharged from the drying chamber to the drying chamber, and the circulation duct. It includes an evaporator provided within, a circulation fan provided within the circulation duct to circulate air discharged from the drying chamber into the drying chamber, and a condenser disposed outside the circulation duct. A drying device according to one example includes a heater provided in the circulation duct to heat air discharged from the drying chamber.

The drying device according to one example may further include a compressor provided outside the circulation duct to compress the refrigerant. The refrigerant compressed by the compressor may circulate back to the compressor through the condenser and the evaporator.

The drying device according to one example may further include an expansion device provided upstream of the evaporator in the circulation direction of the refrigerant to expand the refrigerant that has passed through the condenser.

The drying device according to one example may further include a cooling fan provided outside the circulation duct to cool the condenser, and a control unit that drives the cooling fan while the refrigerant passes through the condenser.

The drying apparatus according to one example may further include a control unit that operates the heater according to the air temperature inside the drying chamber.

According to the spirit of the present disclosure, since the first condenser inside the circulation duct can be selectively controlled, the air inside the drying room can be dehumidified and cooled.

According to the spirit of the present disclosure, the air inside the drying room can respond to thermal shock due to the flow of refrigerant flowing through the second condenser and the first condenser.

According to the spirit of the present disclosure, the refrigerant that has passed through the second condenser can be prevented from flowing back into the first condenser due to the configuration of the four-way valve or check valve.

The effects according to the spirit of the present disclosure are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description below. .

1 is a perspective view of a drying apparatus according to an embodiment of the present disclosure.

Figure 2 is a perspective view showing a state in which the door of a drying apparatus according to an embodiment of the present disclosure is opened.

FIG. 3 is a front cross-sectional view of a drying device according to an embodiment of the present disclosure shown in FIG. 1.

Figure 4 is a schematic diagram of a drying device according to an embodiment of the present disclosure.

FIG. 5 is a schematic diagram showing the flow of refrigerant when the first condenser of the drying device shown in FIG. 4 operates.

FIG. 6 is a schematic diagram showing the flow of refrigerant when the first condenser of the drying device shown in FIG. 4 is not operating.

Figure 7 is a schematic diagram of a drying apparatus shown in Figure 6 with a check valve added.

Figure 8 is a schematic diagram of a drying device according to an embodiment of the present disclosure.

FIG. 9 is a schematic diagram showing the flow of refrigerant when the first condenser of the drying device shown in FIG. 8 operates.

FIG. 10 is a schematic diagram showing the flow of refrigerant when the first condenser of the drying device shown in FIG. 8 is not operating.

FIG. 11 is a schematic diagram of a drying device shown in FIG. 10 to which a check valve is further added.

Figure 12 is a schematic diagram showing the flow of refrigerant in a drying device according to an embodiment of the present disclosure.

FIG. 13 is a schematic diagram showing the flow of refrigerant bypassing the first condenser in the drying device shown in FIG. 12.

Figure 14 is a schematic diagram showing the flow of refrigerant in a drying device according to an embodiment of the present disclosure.

Figure 15 is a control block diagram of a drying device according to an embodiment of the present disclosure.

Figure 16 is a flow chart showing a control method of a drying device according to an embodiment of the present disclosure.

Figure 17 is a flow chart showing a control method of a drying device according to an embodiment of the present disclosure.

The embodiments described in this specification and the configurations shown in the drawings are only preferred examples of the disclosed invention, and at the time of filing this application, there may be various modifications that can replace the embodiments and drawings in this specification.

In addition, the same reference numbers or symbols shown in each drawing of this specification indicate parts or components that perform substantially the same function.

Additionally, the terms used herein are used to describe embodiments and are not intended to limit and/or limit the disclosed invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. The existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not excluded in advance.

In addition, terms including ordinal numbers such as “first”, “second”, etc. used in this specification may be used to describe various components, but the components are not limited by the terms, and the terms It is used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component without departing from the scope of the present invention, and similarly, the second component may also be named a first component. The term “and/or” includes any of a plurality of related stated items or a combination of a plurality of related stated items.

Meanwhile, the terms “up and down direction,” “bottom side,” and “front and back direction” used in the following description are defined based on the drawings, and the shape and location of each component are not limited by these terms.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

1 is a perspective view of a drying apparatus according to an embodiment of the present disclosure. Figure 2 is a perspective view showing a state in which the door of a drying apparatus according to an embodiment of the present disclosure is opened. FIG. 3 is a front cross-sectional view of a drying device according to an embodiment of the present disclosure shown in FIG. 1.

Referring to FIGS. 1 to 3 , the drying device 1 may include a main body 10 forming an exterior and a door 20 rotatably coupled to the main body 10 .

The main body 10 may be provided in a rectangular parallelepiped shape with an open front surface. An opening 10a may be formed in the open front surface of the main body 10. The door 20 may be rotatably coupled to the main body 10 to open and close the open front of the main body 10. The door 20 may be coupled to the main body 10 by a hinge 23.

The main body 10 may be formed to have a different front length extending in the first direction (X) and a side length extending in the second direction (Y). That is, the length L1 of the front of the main body 10 may be formed to be longer than the length L2 of the side of the main body 10. Because of this, the management device 1 can be easily installed even in a narrow entrance. The length of the front of the main body 10 may be defined as a first length (L1), and the length of the side of the main body 10 may be defined as a second length (L2).

The door 20 may include a control panel 22 provided on the front and/or top. The control panel 22 can receive various commands from the user. Additionally, the control panel 22 may display various information regarding the operation of the drying device 1. For example, the user can use the control panel 22 to select the type of object to be managed and set a management course appropriate for the object.

The control panel 22 may include a display that displays information regarding the operation of the management device 1 . Additionally, the control panel 22 may include at least one of buttons or a touch screen.

The door 20 may include a hanging member 21. The hanging member 21 may be provided on one side of the door 20 facing the inside of the drying room 30, and at least one hanging member may be provided. The hanging member 21 may be used to hang the handle 55 of the stand 50. Storage of the holder 50 can be facilitated by the hanging member 21. The hanging member 21 may also be used for other purposes.

The main body 10 may include an outer case 11 and an inner case 12 disposed inside the outer case 11. A drying chamber 30 may be formed inside the main body 10. For example, the inner case 12 may form a drying room 30. The inner case 12 may also be referred to as a case.

The drying room 30 may form a space where shoes are accommodated. The drying room 30 has the upper surface 12a, lower surface 12b, left side 12c, right side 12d, and rear side 12e of the inner case 12, respectively, and the upper wall 12a and lower wall of the inner case 12. (12b), left wall (12c), right wall (12d), and rear wall (12e).

A holder 50 and a mounting rail 80 may be provided in the drying room 30. The holder 50 and the mounting rail 80 may be installed on the left side 12c or the right side 12d of the inner case 12. That is, the holder 50 may be installed so that the side of the object is visible when viewed from the front of the drying device 1. To this end, the length of the side of the main body 10 may be shorter than the length of the front of the main body 10. However, the positions of the holder 50 and the mounting rail 80 are not limited to those illustrated.

At least one holder 50 may be provided. The holder 50 may be provided in a shape that can be inserted inside an object. Additionally, the holder 50 is detachable from the drying room 30. That is, the holder 50 may be coupled to the mounting rail 80 provided on the side of the drying room 30, or may be separated from the mounting rail 80. For example, the holder 50 may be inserted into the mounting rail 80 along the second direction (Y). Since the stand 50 is detachable, the space in the drying room 30 can be used efficiently depending on the size of the shoes.

The management device 10 may include an air outlet hole 31 and an air inlet hole 60. The air outlet hole 31 may be formed on the side wall of the inner case 12. For example, the air outlet hole 31 may be formed on the left side 12c of the drying chamber 30. A plurality of air outlet holes 31 may be provided. The air outlet hole 31 allows air that has passed through the duct 100 to flow out into the drying room 30. In other words, the air flows to the first condenser 43 by the evaporator 42 within the duct 100, and the air heated by the first condenser 43 flows into the drying chamber 30 through the air outlet hole 31. can be supplied. Meanwhile, the duct 100 may be referred to as a circulation duct 100.

The air inlet hole 60 may be formed on one side of the inner case 12. For example, the air inlet hole 60 may be formed on the lower surface 12b of the inner case 12. Specifically, the air inlet hole 60 may be provided in front of the lower surface 12b. Air in the drying room 30 may flow into the duct 100 through the air inlet hole 60. The air inlet hole 60 may be composed of a central hole 60a and a plurality of side holes 60b.

The drying device 1 may include a machine room 32, a compressor 41, an evaporator 42, a first condenser 43, and a second compressor 43.

The machine room 32 may be provided on one side of the drying room 30. For example, the machine room 32 may be provided below the drying room 30. At least a portion of the duct 100 may be accommodated inside the machine room 32. In the machine room 32, a heat pump device 40 including a compressor 41, an evaporator 42, a first condenser 43, a second condenser 44, and an expansion device 46 (see FIG. 4) will be disposed. You can. The machine room 32 can accommodate a compressor 41, an evaporator 42, a first condenser 43, a second condenser 44, and an expansion device 46. Additionally, a sterilizing device (not shown) may be provided inside the drying room 30 or the machine room 32.

The air inside the machine room 32 may communicate with the outside air of the management device 1 through the communication hole 34. The communication hole 34 may be provided at the rear of the machine room 32. The communication hole 34 may be provided on the rear wall of the main body 10. For example, the communication hole 34 may be provided on the rear wall 11e of the external case 11.

A machine room outlet hole 33 may be provided on the left wall 11d of the external case 11 disposed on the left side of the machine room 32. A machine room inlet hole 35 may be provided on the right wall 11c of the external case 11 disposed on the right side of the machine room 32. External air of the main body 10 may flow into the machine room 32 through the machine room inlet hole 35, and air inside the machine room 32 may flow out to the outside through the machine room outlet hole 33. It is not limited to this, and the communication hole 34, machine room inlet hole 35, and machine room outlet hole 33 can be provided at various locations as long as the machine room 32 and the outside of the main body 10 can communicate. For example, it is also possible to form it on the

side walls

11c and 11d of the outer case 11.

The duct 100 may be provided on one side of the drying room 30. For example, the duct 100 may be disposed below the drying room 30, on the left wall 12c and/or the right wall 12d. Additionally, the duct 100 may be provided on one side of the machine room 32. For example, duct 100 may be placed at the top of machine room 32. An evaporator 42, a first compressor 43, a deodorizing device 47, a circulation fan 47, a first temperature sensor 121, and a second temperature sensor 122 may be provided in the duct 100. .

The compressor 41, the evaporator 42, the first condenser 43, the second condenser 44, the control valve 45, and the expansion device 46 may be defined as the heat pump device 40. The refrigerant is supplied through the refrigerant pipe 50 of the heat pump device 40 to the compressor 41, the evaporator 42, the first compressor 43, the second compressor 44, the control valve 45, and the expansion device 46. ) can flow.

The heat pump device 40 can cool, dehumidify, and heat the air circulating in the drying room 30. The heat pump device 40 may dehumidify the air discharged from the drying chamber 30 and then introduce the heated air into the drying chamber 30 through the first condenser 43.

The duct 100 may include a first duct 101 located below the drying room 30. The first duct 101 may be referred to as the lower duct 101. The duct 100 is connected to the air inlet hole 60 of the drying room 30 and may form a flow path that guides the air passing through the air inlet hole 60 to the circulation fan 48. The duct 100 may include a second duct 102 provided on the left wall 12c and/or the right wall 12d forming the drying room 30. The first duct 101 may be connected to the second duct 102 provided on the side wall of the main body 10. The second duct 102 may be referred to as the side duct 102.

The second duct 102 may be provided outside the side wall of the inner case 12 in the second direction (Y) of the drying device 1. One end of the second duct 102 may be connected to at least one air outlet hole 31, and the other end may be connected to the first duct 101. The second duct 102 may form an exhaust passage 104 that guides air to the air outlet hole 31.

An evaporator 42 and a first condenser 43 may be disposed in the first duct 101. The evaporator 42, the first condenser 43, and the circulation fan 48 may be arranged in the first direction (X). The evaporator 42 may be located upstream of the first condenser 43 based on the air flow.

The circulation fan 48 is provided between the heat pump device 40 and the drying room 30 to circulate air. The circulation fan 48 may rotate based on a predetermined RPM (Rotate Per Minute). Specifically, the circulation fan 48 may suck in air flowing into the first duct 101 and discharge the air toward the second duct 102. The air introduced into the first duct 101 through the air inlet hole 60 is dried while passing through the evaporator 42 of the heat pump device 40, is heated while passing through the first condenser 43, and is heated while passing through the second condenser 43. It can be discharged back to the drying room 30 through the duct 102 and the air outlet hole 31.

Additionally, a deodorizing device 47 may be disposed within the first duct 101. The deodorizing device 47 may include a deodorizing filter 47a and a UV LED 47b. The deodorizing filter 47a and UV LED 47b may be placed close to the air inlet hole 60 of the drying room 30. The UV LED 47b can remove odors from the air by irradiating light to the deodorizing filter 47a. For example, the deodorizing filter 47a may include at least one of a ceramic filter, a photocatalytic filter, and an activated carbon filter.

A sterilizing device 130 may be further disposed inside the drying room 30 or the first duct 101. The sterilizing device 130 can remove bacteria contained in the air. The sterilizing device 130 may include at least one of an ultraviolet lamp, an ultraviolet LED, a xenon lamp, an ozone generator, or a disinfectant spray.

The drain tank 140 may be disposed in the lower part of the main body 10, that is, in the lower part of the machine room 32. The sump 140 may store condensed water generated by the evaporator 42. That is, the air flowing out of the drying room 30 can be cooled and dehumidified in the evaporator 42 provided in the duct 100, and the condensed water generated during cooling and dehumidification can be collected in the sump 140. The drain tank 140 may be separable from the main body 10. The drain tank 140 may be referred to as a water collection tank 140.

At least one shelf 90 may be provided in the drying room 30. Shoes may be placed on the shelf 90. Additionally, the shelf 90 may include a duct shelf 91. The duct shelf 91 may have a duct passage 91b formed therein and may include a lower hole 91a formed on the lower surface. Air blown from the circulation fan 48 through the second duct 102 may be discharged into the drying chamber 30 through the bottom hole 91a of the duct shelf 91. Additionally, a top hole 93 may also be provided on the top surface of the duct shelf 91.

A side of the duct shelf 91 may be connected to a circular duct 92 disposed within the second duct 102. Air may be discharged into the drying room 30 through the nozzle 92a of the circular duct 92. Air may be supplied to the duct shelf 91 after passing through the circular duct 92. The circular duct 92 may have various shapes.

The first temperature sensor 121 may measure the first temperature of air heated by the first condenser 43. For example, the first temperature sensor 121 may be disposed downstream of the first condenser 43 and sense the temperature of the air flowing out of the first condenser 43. Hereinafter, the air temperature measured by the first temperature sensor 121 is defined as the first temperature. The first temperature sensor 121 may be provided in the flow path between the first condenser 43 and the circulation fan 49. However, the location of the first temperature sensor 121 is not limited to the above example. The control unit 300 of the drying device 1 may adjust the operating frequency of the compressor 41 based on the first temperature measured by the first temperature sensor 121.

The second temperature sensor 122 may measure the temperature of the air in the air inlet hole 60 of the drying chamber 30 and/or the temperature of the air before it flows into the evaporator 42. For example, the second temperature sensor 122 may be disposed upstream of the evaporator 42 to sense the temperature of air before flowing into the evaporator 42. The second temperature sensor 122 may be provided in the flow path between the air inlet hole 60 and the deodorizing filter 47a or between the deodorizing filter 47a and the evaporator 42. Hereinafter, the air temperature measured by the second temperature sensor 122 is defined as the second temperature. The control unit 300 of the drying device 1 may determine the outside air temperature based on the second temperature measured by the second temperature sensor 122 when the drying device 1 starts operating.

Figure 4 is a schematic diagram of a drying device according to an embodiment of the present disclosure. FIG. 5 is a schematic diagram showing the flow of refrigerant when the first condenser of the drying device shown in FIG. 4 operates. FIG. 6 is a schematic diagram showing the flow of refrigerant when the first condenser of the drying device shown in FIG. 4 is not operating.

In FIG. 4 , the circulation flow path flowing through the drying room 30 and the machine room 32 in the drying apparatus 1 shown in FIG. 3 and the flow of air flowing through the internal flow path of the duct 100 are explained in detail.

Referring to FIG. 4, the drying device 1 may include a circulation passage 100a through which air circulates between the drying chamber 30 and the machine room 32, and a circulation fan 48 through which air circulates within the circulation passage 100a. You can.

The circulation passage 100a can circulate the air in the drying room 30 by supplying air discharged from the drying room 30 to the drying room 30. The circulation flow path 100a may include a first circulation flow path 103 and a second circulation flow path 104. Additionally, the drying device 1 may include a duct 100 and a circulation passage 100a provided on one side of the drying chamber 30.

The duct 100 may include a first duct 101 and a second duct 102. The first duct 101 may be provided below the drying room 30. The second duct 102 may be formed on the

side walls

12c and 12d forming the drying room 30. The first duct 101 and the second duct 102 may be connected to each other to allow air to communicate. The first duct 101 and the second duct 102 may be formed as one piece. However, the present invention is not limited to this, and the first duct 101 and the second duct 102 may be formed separately and then combined.

A circulation flow path 100a may be formed within the duct 100. The evaporator 42, the first condenser 43, and the circulation fan 49 may be disposed within the circulation passage 100a.

The first circulation passage 103 may be provided to allow air in the drying room 30 to flow into the duct 100. The first circulation passage 103 can receive air from the air inlet hole 60 and allow it to flow through the evaporator 42, the first condenser 43, and the circulation fan 48. The air inlet hole 60 may be formed on the lower surface 12b of the inner case 12 forming the drying chamber 30. The first circulation passage 103 may be formed from the air inlet hole 60 to the circulation fan 48.

The air on the first circulation passage 103 may pass through the evaporator 42 and become low-temperature, low-humidity air. The air passing through the evaporator 42 may pass through the first condenser 43 and become high-temperature, low-humidity air.

*The second circulation passage 104 may be formed within the duct 100. A portion of the second circulation passage 104 may be formed within the second duct 102. The second circulation passage 104 may be provided to allow air in the duct 100 to flow into the drying room 30 where objects are accommodated. The second circulation passage 104 is connected to the air outlet hole 31 to allow air passing through the circulation fan 48 to flow into the drying chamber 30. The air outlet hole 31 may be formed on the

side walls

12c and 12d of the inner case 12 forming the drying chamber 30. The second circulation passage 104 may be formed from the circulation fan 48 to the air outlet hole 31.

The heat pump device 40 (see FIG. 2) includes a compressor 41, an evaporator 42, a first condenser 43 provided within the duct 100, and a second condenser 44 provided outside the duct 100. It can be included.

*The evaporator 42 can convert the high-temperature, high-pressure air discharged from the drying chamber 30 through the air outlet hole 60 into low-temperature, low-humidity air. Through this, the refrigerant vaporized in the evaporator 42 can flow to the compressor 41 through the first refrigerant pipe 51. The refrigerant gas passing through the compressor 41 may be a high-temperature, high-pressure refrigerant.

High-temperature and high-pressure refrigerant may flow to the control valve 45 through the eighth refrigerant pipe 58. The control valve 45 may be configured to selectively supply refrigerant to the first condenser 43. The control valve 45 may block or supply refrigerant to the first condenser 43 to control the air temperature in the drying chamber 30.

The second condenser 44 provided outside the duct 100 with the control valve 45 as the center and the first condenser 43 provided inside the duct 100 may be arranged in parallel with each other. That is, the second condenser 44 may be arranged in parallel with the first condenser 43 so that the refrigerant passing through the control valve 45 flows through one of the first condenser 43 and the second condenser 44. there is. The refrigerant passing through the control valve 45 may pass through one of the first condenser 43 and the second condenser 44 and then circulate back to the control valve 45 through the evaporator 42 and the compressor 41. there is.

Referring to FIGS. 5 and 6 , the flow of refrigerant when the first condenser 43 is operating and when the first condenser 43 is not operating will be described in detail.

As shown in FIG. 5, when the refrigerant flows into the seventh refrigerant pipe 57 through the control valve 45 and the refrigerant flows into the first condenser 43, the low temperature and low humidity air passing through the evaporator 42 is It may pass through the first condenser 43 and become air of high temperature and low humidity.

The refrigerant condensed while passing through the first condenser 43 may flow to the expansion device 46 through the fourth refrigerant pipe 54 and the third refrigerant pipe 53. The refrigerant that has passed through the expansion device 46 is constricted to become a low-temperature, low-pressure refrigerant and can flow back to the evaporator 42 through the second refrigerant pipe 52.

In this way, the expansion device 46 may be provided upstream of the evaporator 42 with respect to the direction of circulation of the refrigerant to expand the refrigerant. Additionally, the compressor 41 may be provided outside the duct 100 and downstream of the evaporator 42 in the direction of circulation of the refrigerant, and may compress the refrigerant that has passed through the evaporator 42.

Meanwhile, the control unit 300 (see FIG. 15) may control the control valve 45 so that the refrigerant does not flow into the first condenser 43, as shown in FIG. 6. That is, the control valve 45 allows refrigerant to flow to the sixth refrigerant pipe 56, allowing the refrigerant to flow into the second condenser 44 and to the fifth refrigerant pipe 55. The refrigerant flowing through the fifth refrigerant pipe 55 and the third refrigerant pipe 53 may circulate back to the second refrigerant pipe 52 and the evaporator 42 in a constricted state through the expansion device 46.

In this case, in order to prevent the refrigerant from flowing into the first condenser 43 provided inside the duct 100, the refrigerant can only flow to the second condenser 44. The air in the first circulation passage 103 flowing through the evaporator 42 may not be high temperature and low humidity air even if it passes through the first condenser 43.

If the air inside the drying room 30 approaches the target temperature, the operating rate of the heat pump device 40 may decrease. According to this structure, even if the air inside the drying room 30 reaches close to the target temperature, the low temperature and low humidity Air may flow into the drying chamber 30 to enable cooling. In other words, as the heat pump device 40 performs the cooling function after the dehumidifying function, the heat pump operation rate can be improved and the time required to manage the object can be shortened.

In the summer, the user's discomfort due to the temperature of the objects in the drying room 30 or the temperature of the air in the drying room 30 can be relieved in the drying device 1 or through the cooling function.

That is, the control valve 45 can control the refrigerant to flow to the second condenser 44 through the sixth refrigerant pipe 56, and expand through the fifth refrigerant pipe 55 and the third refrigerant pipe 53. Refrigerant may flow into the device 46. The refrigerant that has passed through the expansion device 46 may likewise be constricted and circulated back to the evaporator 42 through the second refrigerant pipe 52 .

The control valve 45 can selectively supply or block the supply of refrigerant to the first condenser to control the air temperature in the drying chamber 30. The control valve 45 controls the sixth refrigerant pipe 56 and the seventh refrigerant pipe so that the refrigerant flowing from the eighth refrigerant pipe 58 flows into either the sixth refrigerant pipe 56 or the seventh refrigerant pipe 57. It may be a 3-way valve that controls the pipe 57. Due to the structure of the three-way valve, the control unit 300 can relatively easily control the control valve 45, which allows the drying device 1 to selectively supply or block the supply of refrigerant to the first condenser 43. You can.

Meanwhile, when the second condenser 44 operates, external air flowing into the machine room 32 through the machine room inlet 35 may flow into the second condenser 44 by the cooling fan 49. . That is, the cooling fan 49 may be controlled by the control unit 300 (see FIG. 15) to operate while the refrigerant passes through the second condenser 44. The cooling fan 49 may be referred to as a blowing fan 49.

The cooling fan 49 may be provided outside the duct 100 to cool the second condenser 44. In this way, the cooling fan 49 can cool the second condenser 44, thereby accelerating condensation of the refrigerant. Condensation of the second condenser 44 can be further improved, so that the management course time of the drying device 1 can be shortened.

Figure 7 is a schematic diagram of a drying apparatus shown in Figure 6 with a check valve added. Referring to FIG. 7, in the structure of FIG. 6, the refrigerant flowing through the second condenser 44 passes through the fifth refrigerant pipe 55 and flows into the first condenser through the fourth refrigerant pipe 54 rather than the third refrigerant pipe 53. The configuration of a check valve (54a) to prevent flow to (43) may be further included.

The check valve 54a may be provided in the fourth refrigerant pipe 54. The fourth refrigerant pipe 54 may be a refrigerant pipe connected to the first condenser 43 to guide the refrigerant that has passed through the first condenser 43, and one end is connected to the first condenser 43 and the other end is connected to the fifth condenser 43. It can be connected to the refrigerant pipe (55). The fifth refrigerant pipe (55) is connected to the second condenser (44) to guide the refrigerant that has passed through the second condenser (44), one end is connected to the second condenser (44), and the other end is connected to the fourth refrigerant pipe (54). It can be connected to the other end of . The other end of the fifth refrigerant pipe 55 and the other end of the fourth refrigerant pipe 54 meet each other and can be connected to the third refrigerant pipe 53.

The check valve 54a may be provided in the fourth refrigerant pipe 54 to allow the refrigerant flowing through the fifth refrigerant pipe 55 to flow only into the third refrigerant pipe 53. According to this structure, even in the case of cooling the air in the drying chamber 30 to allow the refrigerant to flow only to the second condenser 44, the refrigerant is prevented from flowing to the first condenser 43, thereby forming the heat pump device 40, The operation rate (see FIG. 2) can be improved.

Figure 8 is a schematic diagram of a drying device according to an embodiment of the present disclosure. FIG. 9 is a schematic diagram showing the flow of refrigerant when the first condenser of the drying device shown in FIG. 8 operates. FIG. 10 is a schematic diagram showing the flow of refrigerant when the first condenser of the drying device shown in FIG. 8 is not operating.

Referring to FIG. 8, the second condenser 44 provided outside the duct 100 may be provided between the compressor 41 and the control valve 45 in the circulation direction of the refrigerant. The refrigerant passing through the second condenser 44 may be selectively supplied to the first condenser 43 through the control valve 45.

That is, the eighth refrigerant pipe 158 guides the refrigerant compressed by the compressor 41 to the second condenser 44, and the seventh refrigerant pipe 157 controls the refrigerant that passed through the second condenser 44. It can be guided to the valve (45). The control valve 45 may be provided so that the refrigerant that has passed through the second condenser 44 selectively flows into the first condenser 43.

Referring to FIGS. 9 and 10 , the flow of refrigerant when the first condenser 43 is operating and when the first condenser 43 is not operating will be described in detail.

As shown in FIG. 9, when the refrigerant flows into the sixth refrigerant pipe 56 through the control valve 45 and the refrigerant flows into the first condenser 43, the low temperature and low humidity air passing through the evaporator 42 is After passing through the first condenser 43, the air becomes high-temperature and low-humidity air, which may increase the temperature inside the drying chamber 30.

The refrigerant condensed while passing through the first condenser 43 may flow to the expansion device 46 through the fourth refrigerant pipe 154 and the third refrigerant pipe 153. The refrigerant that has passed through the expansion device 46 is constricted to become a low-temperature, low-pressure refrigerant and can flow back to the evaporator 42 through the second refrigerant pipe 152.

In this case, refrigerant flows through both the second condenser 44 and the first condenser 43, so that both the first condenser 43 and the second condenser 44 can operate. That is, the low-temperature, low-humidity air that has passed through the evaporator 42 may be introduced into the drying chamber 30 through the second circulation passage 104 as high-temperature, low-humidity air through the first condenser 43. According to this structure, compared to the structure of FIG. 9, which flows only through the first condenser 43, in the structure of FIG. 10, the refrigerant that has passed through the second condenser 44 flows into the first condenser 43, so that the refrigerant flows into the first condenser 43. The temperature of the incoming refrigerant may be relatively low. Because of this, the thermal shock of the air passing through the first condenser 43 can be alleviated.

As shown in FIG. 10, the refrigerant condensed by the second condenser 44 through the control valve 45 passes through the fifth refrigerant pipe 155 and the third refrigerant pipe 153 to the expansion device 46. After passing through and being constricted, it may flow into the second refrigerant pipe 152 and flow into the evaporator 42. The refrigerant that has passed through the evaporator 42 may flow back into the second condenser 44 through the compressor 41 and the eighth refrigerant pipe 158 through the first refrigerant pipe 151.

According to this structure, by not operating the first condenser 43, the temperature inside the drying chamber 30 can be prevented from rising further, and the operation rate of the heat pump device 40 (see FIG. 2) is improved to improve the temperature of the object. Drying time may be reduced overall.

The control valve 45 may supply or block the supply of refrigerant to the first condenser 43 to control the air temperature in the drying chamber 30. The control valve 45 may be controlled by the control unit 300 (see FIG. 15). The control valve 45 is connected to the sixth refrigerant pipe 156 so that the refrigerant passing through the second condenser 44 passes through the first condenser 43 and heads to the evaporator 42 or directly to the evaporator 42. 5 The refrigerant pipe 155 can be controlled. In terms of the flow of refrigerant, the refrigerant passing through the second condenser 44 flows into the control valve 45, and passes through the first condenser 43 or does not pass through the first condenser 43 by the control valve 45. It can be bypassed and circulated to the second condenser 44 through the evaporator 42 and compressor 41.

The control valve 45 may be a three-way valve that allows the refrigerant flowing in the seventh refrigerant pipe 157 to flow to the sixth refrigerant pipe 156 or the fifth refrigerant pipe 155. The control valve 45 includes a seventh refrigerant pipe 157 through which the refrigerant passing through the second condenser 44 flows, a fifth refrigerant pipe 155 directly connected from the control valve 45 to the evaporator 42, and It may be connected to the sixth refrigerant pipe 156 connected from the control valve 45 to the first condenser 43. Here, the seventh refrigerant pipe 157 may be an inflow pipe, the fifth refrigerant pipe 155 may be a first discharge pipe, and the sixth refrigerant pipe 156 may be a second discharge pipe. Due to the configuration of the three-way valve, the control unit 300 can control the drying device 1 so that the refrigerant is selectively supplied to the first condenser 43 through the control valve 45.

The expansion device 46 may be provided upstream of the evaporator 42 in the direction of circulation of the refrigerant so that the refrigerant that has passed through the first condenser 43 and the second condenser 44 expands. The compressor 41 may be provided outside the duct 100 and downstream of the evaporator 42 to compress the refrigerant that has passed through the evaporator 42. A second condenser 44 and a control valve 45 may be provided downstream of the compressor 41.

FIG. 11 is a schematic diagram of a drying device shown in FIG. 10 to which a check valve is further added. Referring to FIG. 11, in the structure of FIG. 10, the refrigerant flow through the fifth refrigerant pipe 155 and the third refrigerant pipe 153 is not designed to flow through the first condenser 43. According to this structure, the refrigerant passing through the fifth refrigerant pipe 155 can flow to the first condenser 43 through the fourth refrigerant pipe 154 rather than the third refrigerant pipe 153. To prevent this problem, the check valve 154a may be provided on the fourth refrigerant pipe 154.

As described above, one end of the fourth refrigerant pipe 154 may be connected to the first condenser 43 and the other end may be connected to the fifth refrigerant pipe 155 and the third refrigerant pipe 153. The fourth refrigerant pipe 154 can receive the refrigerant from the first condenser 43 and guide it to the third refrigerant pipe 153. One end of the fifth refrigerant pipe 155 may be connected to the three-way valve 45 and the other end may be connected to the fourth refrigerant pipe 154 and the third refrigerant pipe 153. The fifth refrigerant pipe 155 may be provided to guide the refrigerant that has passed through the second condenser 44 directly to the expansion device 46.

The refrigerant flowing through the seventh refrigerant pipe 157 and the fifth refrigerant pipe 155 by the control valve 45 flows into the first condenser 43 through the fourth refrigerant pipe 154 due to the configuration of the check valve 154a. Backflow into the furnace can be prevented. That is, in order to prevent the air temperature in the drying chamber 30 from rising higher, the check valve 154a may be provided in the fourth refrigerant pipe 154.

Figure 12 is a schematic diagram showing the flow of refrigerant in a drying device according to an embodiment of the present disclosure. FIG. 13 is a schematic diagram showing the flow of refrigerant bypassing the first condenser in the drying device shown in FIG. 12.

12 and 13, the structure of the flow path that bypasses the first condenser 43 will be described in detail with respect to the arrangement of the second condenser 44 and the first condenser 43 shown in FIG. 8.

Referring to FIGS. 12 and 13 , the refrigerant vaporized through the evaporator 42 may flow into the compressor 41 through the first refrigerant pipe 251 and become a high-temperature, high-pressure refrigerant. High-temperature, high-pressure refrigerant may flow into the control valve 245 through the second condenser 44 through the eighth refrigerant pipe 258. The control valve 245 may be provided so that the refrigerant passing through the second condenser 44 bypasses the first condenser 43.

The control valve 245 may be a valve that guides the refrigerant flowing from the seventh refrigerant pipe 257 to the sixth refrigerant pipe 256 or the third refrigerant pipe 253. That is, the control valve 245 is a 4-way valve for guiding the refrigerant in the 7th refrigerant pipe 257, 6th refrigerant pipe 256, 4th refrigerant pipe 254, and 3rd refrigerant pipe 253. Valve).

The four-way valve 245 directs the refrigerant that has passed through the second condenser (44) directly to the expansion device (46) or directs the refrigerant that has passed through the second condenser (44) to the expansion device after passing through the first condenser (43). It can be arranged to be directed to (46).

The four-way valve 245 can connect the seventh refrigerant pipe 257 and the sixth refrigerant pipe 256 when the first condenser 43 is operated, and the fourth refrigerant pipe 254 and the third refrigerant The pipes 253 can be connected to each other.

That is, due to the refrigerant flowing into the first condenser 43 through the seventh refrigerant pipe 257 and the sixth refrigerant pipe 256, the low-temperature, low-humidity air passing through the evaporator 42 is transferred to the first condenser 43. As it passes through, it becomes high-temperature, high-humidity air. High-temperature, high-humidity air may flow into the drying room 30 to increase the temperature inside the drying room 30.

As the temperature inside the drying room increases and approaches the target temperature, the first condenser 43 may not be operated. Accordingly, as shown in FIG. 13, the four-way valve 245 can connect the seventh refrigerant pipe 257 and the third refrigerant pipe 253 to each other, and the sixth refrigerant pipe 256 and the fourth refrigerant The pipes 254 can be connected to each other. According to this structure, the refrigerant that has passed through the second condenser 44 may not flow to the first condenser 43, so it bypasses the first condenser 43 and directly flows into the constricted state through the expansion device 46. It may flow into the evaporator 42.

Even with this structure, all of the above-described effects can be achieved.

Figure 14 is a schematic diagram showing the flow of refrigerant in a drying device according to an embodiment of the present disclosure. Referring to FIG. 14 , unlike the above-described configuration, the heater 143 may be provided inside the duct 100 instead of the first condenser 43.

The heater 143 may be configured to heat air that has been brought into a low-temperature and low-humidity state by the evaporator 42 into high-temperature and low-humidity air. The heater 143 may be provided downstream of the evaporator 42 with respect to the flow direction of air circulating on the first circulation passage 103. A circulation fan 48 may be provided downstream of the heater 143. The circulation fan 48 is provided inside the duct 100 to circulate the air discharged from the drying room 30 into the drying room 30.

Meanwhile, the refrigerant passing through the evaporator 42 can be directed to the compressor 41 through the first refrigerant pipe 351, and the refrigerant compressed by the compressor 41 is ducted through the fourth refrigerant pipe 354. 100) It may flow into the condenser 44 provided externally.

The refrigerant condensed by the condenser 44 may be constricted by the expansion device 46 through the third refrigerant pipe 353 and flow into the evaporator 42 through the second refrigerant pipe 352.

According to this structure, unlike the structure of the condenser provided inside the duct 100, the heater 143 can be controlled separately even if the air temperature inside the drying room 30 reaches the target temperature, so the heater 143 is turned off. Depending on this, the cooling function of the drying room 30 may be possible.

In addition, as the temperature inside the drying chamber 30 does not increase further, the operating rate of the heat pump device 40 can be improved, and thus the drying time of the object can be relatively shortened.

A compressor 41, a condenser 44, and an expansion device 46 may be provided outside the duct 100. The refrigerant can be compressed by the compressor 41 and circulated back to the compressor 41 through the condenser 44, the expansion device 46, and the evaporator 42. The expansion device 46 may be provided upstream of the evaporator 42 in the direction of circulation of the refrigerant so that the refrigerant that has passed through the condenser 44 expands.

A cooling fan 49 may be provided adjacent to the condenser 44. The cooling fan 49 may be configured to flow air flowing into the machine room 32 through the machine room inlet hole 35 to the condenser 44. The control unit 300 (see FIG. 15) may drive the cooling fan 49 while the refrigerant passes through the condenser 44. According to this structure, the temperature of the condenser 44 can be lowered to further accelerate condensation of the refrigerant.

Figure 15 is a control block diagram of a drying device according to an embodiment of the present disclosure. Referring to FIG. 15, the drying device 1 may include a control panel 22, a circulation fan 48, a cooling fan 49, a heat pump device 40, a temperature sensor 120, and a control unit 300. You can.

The control panel 22 may include at least one of buttons or a touch screen, and may receive various inputs from the user. The control panel 22 may transmit commands received from the user (hereinafter referred to as 'user input') to the control unit 300.

As described above, the circulation fan 48 can blow the air in the circulation passage 100a in the first direction, and the cooling fan 49 allows the air in the machine room 32 to be transferred to the second condenser 44 or the condenser ( The air in the machine room 32 may be blown in the second direction so that it passes through 44).

The circulation fan 48 and/or the cooling fan 49 may be controlled by the control unit 300.

The heat pump device 40 may include a compressor 41, an evaporator 42, a first condenser 43, a second condenser 44, a control valve 45, and an expansion device 46 (FIG. 4 to Figure 13). The heat pump device 40 may include a compressor 41, an evaporator 42, a compressor 44, and an expansion device 46 (see FIG. 14). The heat pump device 40 may transmit operation information (eg, the operating frequency of the compressor 41) to the control unit 300, and the control unit 300 may control the heat pump device 40.

According to one embodiment, the control unit 300 may control the operating frequency and/or operating rate of the compressor 41. Additionally, the control unit 300 may control the operation rate of the first condenser 43 and/or the second condenser 44. The control unit 300 can control the

control valves

44 and 245.

The temperature sensor 120 can sense the temperature at each location of the drying device 1.

For example, the temperature sensor 120 may include at least one of a first temperature sensor 121 and a second temperature sensor 122. The temperature sensor 120 may sense the temperature at each location of the drying device 1 and send a signal to the control unit 300.

For example, the temperature sensor 120 sends at least one of information about the first temperature measured by the first temperature sensor 121 and information about the second temperature measured by the second temperature sensor 122 to the control unit. It can be delivered to (300).

The control unit 300 may include at least one processor 310 and at least one memory 320, and may control at least one other component of the drying apparatus 1.

The processor 310, for example, executes software (e.g., a program) to execute at least one other component (e.g., the heat pump device 40, the circulation fan 48) of the drying device 1 connected to the processor 310. ) and/or the cooling fan 49, and may perform various data processing or calculations. As at least part of the data processing or calculation, the processor 310 may control other components (e.g., the temperature sensor 120). ), the main processor 310 may store commands or data received from the control panel 22 in the volatile memory, process the commands or data stored in the volatile memory, and store the resulting data in the non-volatile memory. (e.g., a central processing unit) or a auxiliary processor (e.g., a processor for controlling a heat pump device) that can operate independently or together. For example, when the processor 310 includes a main processor and a auxiliary processor. , the auxiliary processor may be set to use less power than the main processor or may be implemented separately from the main processor or as a part of it.

The memory 320 may store various data used by at least one component of the drying apparatus 1 (eg, the processor 310 or the temperature sensor 120). Data may include, for example, input data or output data for software and instructions related thereto. Memory 320 may include volatile memory or non-volatile memory.

According to various embodiments, the memory 320 may store software (eg, a program) that performs operations described later when executed by the processor 310.

제어 모드control mode	조건condition	히트 펌프 사이클 운전heat pump cycle driving	제1 응축기1st condenser	냉매 제어refrigerant control	냉각팬cooling fan
내부 기류 온도 상승internal airflow temperature rise	기류 온도< 관리 온도Airflow Temperature< management temperature	ONON	ONON	제1 응축기1st condenser	OFFOFF
내부 기류 온도 하강internal airflow temperature drop	기류 온도> 관리 온도airflow temperature> management temperature	ONON	OFFOFF	제2 응축기2nd condenser	ONON
대상물 가열quid pro quo heating	기류 온도< 행정완료시 희망 온도Airflow Temperature< Desired temperature upon completion of administration	ONON	ONON	제1 응축기1st condenser	OFFOFF
대상물 냉각quid pro quo Cooling	기류 온도> 행정완료시 희망 온도airflow temperature> Desired temperature upon completion of administration	ONON	OFFOFF	제2 응축기2nd condenser	ONON

<Table 1. Control method having a first condenser and a second condenser of the present disclosure> Referring to FIG. 16 and Table 1, the operation mode of the drying device 1 may include a first operation mode and a second operation mode. there is. The first operation mode is a normal mode and may mean an operation mode for drying objects contained in the drying chamber 30 with high temperature air that has passed through the first condenser 43 or the heater 143. The second operation mode may refer to an operation mode for cooling the first condenser 43 or the heater 143.

Depending on the embodiment, the first operation mode and the second operation mode may be divided depending on whether the cooling fan 49 is operating or whether the first condenser 43 is operating.

For example, when the cooling fan 49 operates, the drying device 1 may operate in the second operation mode, and when the cooling fan 49 does not operate, the drying device 1 may operate in the first operation mode. It may operate as .

The control unit 300 (see FIG. 15) may operate the first condenser 43 (see FIG. 4) and the second condenser 44 according to the air temperature inside the drying chamber 30. The air temperature inside the drying room may be the temperature measured by the second temperature sensor 122.

Based on the start of the management course selected by the user through the control panel 22 (1000), the control unit 300 operates each component of the drying device 1 (e.g., a heat pump device) with an algorithm corresponding to the selected management course. 40) and/or the cooling fan 49) can be controlled.

The control unit 300 can turn the cooling fan 49 on or off depending on the airflow temperature. More specifically, if the air flow temperature is less than the target temperature (T1) corresponding to the management course (example at 1100), the refrigerant can pass through the first condenser 43 (1110). At this time, the control unit can operate the first condenser 43, and the control unit 300 can turn off the cooling fan 49 (1120). This control mode may be the first mode.

If the airflow temperature is greater than the target temperature (T1) corresponding to the management course (No of 1100), the refrigerant can pass through the second condenser 44 (1130). At this time, the cooling fan 49 may be turned on (1140). This control mode may be the second mode.

If the course time of the drying room 32 is not reached (No in 1150), the control unit 300 senses the airflow temperature again and compares it with the target temperature (T1) corresponding to the management course to turn the cooling fan 49 on or off. You can.

The control unit 300 can heat the object when the course time of the drying room 32 reaches (example of 1150). Thereafter, if the airflow temperature is less than the desired temperature (T2) at the completion of the stroke (example at 1200), the refrigerant can pass through the first condenser 43 (1210). Accordingly, the control unit 300 can turn off the cooling fan 49 (1220). The control mode at this time may be the first mode.

If the airflow temperature is greater than the desired temperature (T2) at the end of the stroke (no of 1200), the refrigerant can pass through the second condenser 44 (1230). Accordingly, the control unit 300 can turn on the cooling fan 49 (1240). The control mode at this time may be the second mode.

Afterwards, when the course time of the drying room 30 reaches (example at 1250), the management course of the drying device 1 (see FIG. 1) may be ended. On the other hand, if the course time of the drying room 30 has not been reached (No of 1250), the drying device 1 can sense the airflow temperature again and compare it with the desired temperature (T2) at the completion of the cycle.

제어 모드control mode	조건condition	히트 펌프 사이클 운전heat pump cycle driving	히터heater	냉매 제어refrigerant control	냉각팬cooling fan
내부 기류 온도 상승internal airflow temperature rise	기류 온도< 관리 온도Airflow Temperature< management temperature	ONON	ONON	응축기condenser	ONON
내부 기류 온도 하강internal airflow temperature drop	기류 온도> 관리 온도airflow temperature> management temperature	ONON	OFFOFF	응축기condenser	ONON
대상물 가열quid pro quo heating	기류 온도< 행정완료시 희망 온도Airflow Temperature< Desired temperature upon completion of administration	ONON	ONON	응축기condenser	ONON
대상물 냉각quid pro quo Cooling	기류 온도> 행정완료시 희망 온도airflow temperature> Desired temperature upon completion of administration	ONON	OFFOFF	응축기condenser	ONON

<Table 2. Control method with condenser and heater of the present disclosure> Referring to FIG. 17 and Table 2, the control unit 300 (see FIG. 15) controls the heater 143 (see FIG. 14) according to the air temperature inside the drying chamber 30. ) can operate. Based on the start of the management course selected by the user through the control panel 22 (1500), the control unit 300 operates each component of the drying device 1 (e.g., a heat pump device) with an algorithm corresponding to the selected management course. 40) and/or the cooling fan 49) can be controlled.

The control unit 300 can turn the heater 143 ON or OFF depending on the airflow temperature. More specifically, if the airflow temperature is less than the target temperature (T1) corresponding to the management course (example in 1600), the heater 143 may be turned on (1610). The control mode at this time may be the first mode.

If the airflow temperature is greater than the target temperature (T1) corresponding to the management course (No in 1600), the heater 143 may be turned off (1620). The control mode at this time may be the second mode.

Accordingly, the object provided inside the drying chamber 32 can be heated and/or cooled. If the management course of the drying room 32 does not reach the predetermined course time (No in 1650), the control unit 300 senses the airflow temperature again, compares it with the target temperature (T1) corresponding to the management course, and operates the heater 143. It can be turned ON or OFF.

The control unit 300 may heat and/or cool the object when the course time of the drying room 32 reaches (example of 1650). Thereafter, if the air flow temperature is less than the desired temperature (T2) at the completion of the stroke (example in 1700), the heater 143 may be turned on (1710). The control mode at this time may be the first mode.

If the airflow temperature is greater than the desired temperature (T2) at the completion of the stroke (No in 1700), the heater (OFF) may be turned off under the control of the controller 300 (1720). The control mode at this time may be the second mode.

Afterwards, when the course time of the drying room 30 reaches (example 1750), the management course of the drying device 1 (see FIG. 1) may be ended. Likewise, if the course time of the drying chamber 30 is not reached (No in 1750), the drying device 1 can sense the airflow temperature again and compare it again with the desired temperature T2 at the completion of the stroke.

In the above, specific embodiments are shown and described. However, it is not limited to the above-mentioned embodiments, and those skilled in the art can make various changes without departing from the gist of the technical idea of the invention as set forth in the claims below. .

Claims

main body;

a drying chamber formed inside the main body;

a circulation duct that supplies air discharged from the drying room to the drying room, thereby forming a circulation passage that circulates the air in the drying room;

an evaporator provided within the circulation duct;

a first condenser provided in the circulation duct;

a second condenser provided outside the circulation duct; and

a control valve selectively supplying refrigerant to the first condenser; Including,

The control valve is a drying device that blocks or supplies refrigerant to the first condenser to control the air temperature in the drying chamber.
According to paragraph 1,

Drying apparatus wherein the second condenser is arranged in parallel with the first condenser such that the refrigerant passing through the control valve flows through one of the first condenser and the second condenser.
According to paragraph 2,

a compressor that compresses the refrigerant and is provided outside the circulation duct; It further includes,

A drying device in which the refrigerant passing through the control valve passes through one of the first condenser and the second condenser and then circulates through the evaporator and the compressor to the control valve.
According to paragraph 3,

The control valve is a three-way valve that flows the refrigerant compressed by the compressor into one of the second condenser and the first condenser.
According to paragraph 3,

an expansion device provided upstream of the evaporator in the direction of circulation of the refrigerant to expand the refrigerant that has passed through the first condenser or the second condenser; A drying device further comprising:
According to clause 5,

a first refrigerant pipe provided to guide the refrigerant that has passed through the first condenser and one end of which is connected to the first condenser;

a second refrigerant pipe provided to guide the refrigerant that has passed through the second condenser, one end of which is connected to the second condenser, and the other end of which is connected to the other end of the first refrigerant pipe; and

a check valve provided in the first refrigerant pipe to prevent the refrigerant flowing along the second refrigerant pipe from flowing back into the first condenser through the first refrigerant pipe; A drying device further comprising:
According to paragraph 1,

The control valve is provided to selectively introduce the refrigerant that has passed through the second condenser into the first condenser.
In clause 7,

a compressor that compresses the refrigerant and is provided outside the circulation duct; It further includes,

The refrigerant passing through the second condenser flows into the control valve, and passes through the first condenser by the control valve, or is bypassed so as not to pass through the first condenser, and passes through the evaporator and the compressor to the second condenser. A drying device that circulates.
According to clause 8,

The control valve has a three-way valve connected to an inlet pipe through which the refrigerant passing through the second condenser flows, a first discharge pipe connected directly from the control valve to the evaporator, and a second discharge pipe connected to the first condenser. Valve-in drying device.
According to clause 9,

an expansion device provided upstream of the evaporator in the circulation direction of the refrigerant to expand the refrigerant that has passed through the second condenser and the first condenser or the refrigerant that has passed through the second condenser; A drying device further comprising:
According to clause 10,

a first refrigerant pipe provided to guide the refrigerant that has passed through the first condenser and one end of which is connected to the first condenser;

a second refrigerant pipe having one end connected to the three-way valve and the other end connected to the other end of the first refrigerant pipe to guide the refrigerant that has passed through the three-way valve directly to the expansion device; and

a check valve provided in the first refrigerant pipe to prevent the refrigerant flowing in the second refrigerant pipe from flowing back into the first condenser through the first refrigerant pipe; A drying device further comprising:
According to clause 8,

The control valve is a four-way valve provided to allow the refrigerant passing through the second condenser to bypass the first condenser.
According to clause 12,

an expansion device provided upstream of the evaporator in the direction of circulation of the refrigerant to expand the refrigerant heading toward the evaporator; It further includes,

The four-way valve is a drying device that directs the refrigerant that has passed through the second condenser directly to the expansion device or directs the refrigerant that has passed through the second condenser to the expansion device after passing through the first condenser. .
According to paragraph 1,

a cooling fan provided outside the circulation duct to cool the second condenser; and

a control unit that drives the cooling fan while the refrigerant passes through the second condenser; A drying device further comprising:
According to paragraph 1,

a control unit that operates the first condenser and the second condenser according to the air temperature inside the drying chamber; A drying device further comprising: