KR20210002209A - Hybrid depressurizing-type heat pump dryer capable of checking the condition of the object to be dried, and drying method of the object to be dried using the same - Google Patents

Abstract

According to an embodiment of the present invention, provided are a dryer, which can measure a state of an object to be dried in real time, and has enhanced performance of maintaining a high-temperature drying state to improve drying performance and to efficiently operate energy, and a drying method using the same. According to an embodiment of the present invention, the hybrid depressurizing-type heat pump dryer capable of checking an object to be dried, comprises: a chamber; a support frame unit installed inside the chamber, and formed by coupling a plurality of support frames for supporting a tray supporting an object to be dried by removing moisture; a heat pump module installed inside the chamber, and drying the object to be dried; a pressure control unit coupled to the chamber to adjust a pressure inside the chamber; a load sensor formed on a portion of the support frame unit being in contact with the tray to measure a load of the object to be dried and the tray; and a thermal image sensor installed inside the chamber, and measuring heat distribution on a surface of the object to be dried.

Description

Hybrid depressurizing-type heat pump dryer capable of checking the condition of the object to be dried and drying method of the object to be dried using the same {HYBRID DEPRESSURIZING-TYPE HEAT PUMP DRYER CAPABLE OF CHECKING THE CONDITION OF THE OBJECT TO BE DRIED, AND DRYING METHOD OF THE OBJECT TO BE DRIED USING THE SAME }

The present invention relates to a hybrid pressure-sensitive heat pump dryer capable of confirming the state of an object to be dried, and a method of drying an object to be dried using the same, and more particularly, a real-time state measurement of the object to be dried is possible, and the high-temperature drying state maintenance performance is increased, It relates to a dryer capable of improving performance and operating energy efficiently, and a drying method using the same.

As the demand for processed foods of agricultural and marine products continues to increase, the development of agricultural and marine product dryers for drying various agricultural and aquatic products is increasing, and accordingly, various dryers are being released.

However, in the dryer of the prior art, there is a problem that the overall efficiency of the dryer is lowered by mainly implementing a drying function and introducing outside air into the dryer for dehumidification. And, in the dryer of the prior art, when controlling the drying of the object to be dried, real-time drying control is implemented by performing drying control by measuring the humidity or temperature inside the dryer, but direct state information of the object to be dried is obtained. Since it is not used, there is a problem that the accuracy of control is deteriorated.

In Korean Patent Application Laid-Open No. 10-2010-0012164 (name of the invention: a dehumidifying drying device using a heat pump), a drying chamber 16 having a hot air supply chamber 12 having an air inlet 10 and an air discharge path 14 The condenser 30 and the evaporator 32 of the heat pump 24 are installed in the hot air supply chamber 12 to be partitioned by the partition plate 22 having the up and down circulation paths 18 and 20. (28), and a blower fan (26) is installed under the condenser (30), and an air damper (36) is installed at the air inlet (10), and the controller 44 that controls them is a heat pump. The pressure sensor 54 of (24) and the temperature sensor 50 and the humidity sensor 52 installed in the drying chamber 16 are connected so that the refrigerant pressure of the heat pump 24 or the temperature or humidity in the drying chamber 16 are reduced. There is disclosed a dehumidifying and drying apparatus using a heat pump, characterized in that the air damper 36 is opened when reaching a pre-input reference value.

Republic of Korea Patent Publication No. 10-2010-0012164

An object of the present invention for solving the above problems is to improve drying performance in a dryer using a heat pump.

In addition, an object of the present invention is to control the temperature inside the dryer to a predetermined temperature using a simple structure.

In addition, an object of the present invention is to increase the drying efficiency of the object to be dried by grasping the drying state of the object in real time and controlling the dryer.

The technical problem to be achieved by the present invention is not limited to the technical problems mentioned above, and other technical problems that are not mentioned can be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. There will be.

The configuration of the present invention for achieving the above object, the chamber; A support frame portion installed inside the chamber and formed by combining a plurality of support frames for supporting a tray for supporting an object to be dried by removing moisture; A heat pump module installed inside the chamber and drying the object to be dried; A pressure control unit coupled to the chamber to adjust the pressure inside the chamber; A load sensor formed on a portion of the support frame portion in contact with the tray to measure the load of the object and the tray; And a thermal image sensor installed inside the chamber and measuring heat distribution on the surface of the object to be dried.

In an embodiment of the present invention, the load sensor may be installed at a portion of the support frame where the lower portion of the tray and the support frame contact.

In an embodiment of the present invention, the thermal image sensor may be coupled to another portion of the support frame toward the surface of the object to be dried.

In an embodiment of the present invention, a control signal is transmitted to the heat pump module so that the state information of the object is received from the load sensor or the thermal image sensor, and the heat pump module is controlled according to the state information of the object. It may further include a control unit for transmitting.

In an embodiment of the present invention, the pressure regulating unit may include a pressure regulating pump, which is a pump connected to the chamber.

In an embodiment of the present invention, the chamber may have a plurality of through holes connected to the pressure control unit.

In an embodiment of the present invention, the chamber has a cylindrical shape, and each of a plurality of through holes in a circular cross section of the chamber may be spaced apart at a predetermined angle along a circumferential direction.

In an embodiment of the present invention, the heat pump module includes a main condenser installed inside the chamber to supply heat to the to-be-dried object, and an auxiliary condenser installed outside the chamber to control a temperature inside the chamber. , Can be provided.

In an embodiment of the present invention, the heat pump module may further include an evaporator, and a blower installed between the evaporator and the main condenser to circulate air in the chamber.

In an embodiment of the present invention, the heat pump module may further include a housing accommodating the evaporator, the blower, the main condenser, and the auxiliary condenser, and having an inlet and an outlet of the air inside the chamber.

In an embodiment of the present invention, a drain part connected to the evaporator may be further included.

In an embodiment of the present invention, the drain unit includes a drain pipe that collects and drains moisture condensed on the surface of the evaporator, a drain pump connected to the drain pipe, and a storage container connected to the drain pump to store moisture, It can be provided.

The configuration of the present invention for achieving the above object comprises: a first step of adjusting the internal pressure of the chamber in which the object to be dried is provided; A second step of circulating the air inside the chamber with a blower and heating the air inside the chamber with the condenser; A third step of controlling heat supplied to the to-be-built by using state information of the to-be-built from the load sensor or the thermal image sensor; And a fourth step of removing moisture contained in the air inside the chamber with an evaporator.

The effect of the present invention according to the above configuration is that the inside of the chamber is decompressed and the air inside the chamber is maintained in a high-temperature dry state to improve drying performance and energy-efficient operation.

In addition, the effect of the present invention is that the main condenser is disposed inside the chamber and the auxiliary condenser is disposed outside the chamber, so that the temperature of the air inside the chamber can be adjusted to a predetermined temperature through the auxiliary condenser. That is, regardless of the presence or absence of a device for controlling the internal air of a separate chamber, the temperature of the internal air of the chamber can be adjusted to a predetermined temperature due to the structure of the heat pump unit. Here, the temperature of the air inside the chamber may be adjusted to about 65 degrees Celsius. Thereby, efficient operation of energy may be possible.

In addition, the effect of the present invention is that the evaporator, blower, and condenser are surrounded by a housing, and the outlet of the housing is disposed on one side of the support frame supporting the tray, so that the high-temperature dry internal air is transferred from one side of the support frame to the other side of the cylindrical chamber. It is possible to blow air along the central axis.

In addition, by arranging a plurality of outlets and blowers between the lower end and the upper end of the support frame, the high-temperature dry internal air can be blown entirely from the lower end to the upper end of the support frame.

In addition, since the load sensor is used to determine the drying level of the object to be dried in real time, and the thermal image sensor is used to determine the surface drying state of the object to be dried in real time, the dryer can be controlled in real time according to the drying state of the object. Therefore, the drying efficiency of the object to be dried is increased.

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

1 is a schematic diagram of a lateral cross section of a heat pump dryer according to an embodiment of the present invention.
2 is a schematic diagram of a cross section in a forward direction of a heat pump dryer according to an embodiment of the present invention.
3 is a schematic diagram of an internal structure of a heat pump dryer according to an embodiment of the present invention.
4 is a schematic view showing the inside of the heat pump dryer according to an embodiment of the present invention cut in half.
5 is a perspective view of a support frame according to an embodiment of the present invention
6 is a perspective view of a tray according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be implemented in a number of different forms, and therefore is not limited to the exemplary embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are assigned to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, bonded)" with another part, it is not only "directly connected", but also "indirectly connected" with another member in the middle. "Including the case. In addition, when a part "includes" a certain component, it means that other components may be further provided, rather than excluding other components unless specifically stated to the contrary.

The terms used in this specification are used only to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram of a lateral cross-section of a heat pump dryer according to an embodiment of the present invention, FIG. 2 is a schematic diagram of a forward cross-section of a heat pump dryer according to an embodiment of the present invention, and FIG. It is a schematic diagram of an internal structure of a heat pump dryer according to an embodiment of the present invention. In addition, Figure 4 is a schematic diagram showing the interior of the heat pump dryer according to an embodiment of the present invention cut in half. For convenience of understanding, in FIG. 3, the support frame 200 is simply expressed, and in FIG. 4, only the arrangement of the support frame 200 in the chamber 600 is expressed.

And, Figure 5 is a perspective view of the support frame 200 according to an embodiment of the present invention, Figure 6 is a perspective view of the tray 300 according to an embodiment of the present invention.

As shown in Figures 1 to 6, the heat pump dryer of the present invention, the chamber 600; A support frame portion formed by combining a plurality of support frames 200 installed inside the chamber 600 and supporting the tray 300 supporting the object to be dried by removing moisture; A heat pump module installed inside the chamber 600 and drying the object to be dried; A pressure control unit 500 coupled to the chamber 600 to adjust the pressure inside the chamber 600; A load sensor 110 formed at a portion of the support frame portion in contact with the tray 300 to measure the load of the to-be-dried object and the tray 300; And a thermal image sensor 120 installed inside the chamber 600 and measuring heat distribution on the surface of the object to be dried.

As shown in Figure 5, the support frame 200 has a square frame formed at the upper and lower, the upper frame 210, which is the upper square frame, and the lower frame 220, which is the lower square frame, the upper frame 210 ) And the lower frame 220 may have a shape connected by a vertical bar 230 that is a bar perpendicular to each of the lower frame 220. In the support frame 200, the lower frame 220 may include a horizontal bar 240, which is a bar that supports the load of the tray 300, and the horizontal bar 240 is provided with a tray 300 on the support frame 200. It may be formed in a direction perpendicular to the direction in which the is inserted. Further, a plurality of horizontal bars 240 may be formed on the lower frame 220, and each of the plurality of horizontal bars 240 may be formed parallel to each other.

As shown in Figure 6, the tray 300, a support plate 310 for supporting the object to be built, a tray frame 320 formed along the edge of the support plate 310 and coupled to the support plate 310, and a tray frame When combined with the 320 and the tray 300 is disposed on the support frame 200, a support bar 330 that is seated on the support frame 200 may be provided. Here, the support bar 330 may be formed in a direction horizontal to the direction in which the tray 300 is inserted into the support frame 200. In addition, the lower surface of the support bar 330 may be formed as a curved surface protruding outward from the support bar 330. The support plate 310 may be formed in a mesh shape or may have a plurality of holes as shown in FIG. 6 in order to increase drying efficiency of the object to be dried.

The load sensor 110 may be installed at a portion of the support frame 200 in which the lower portion of the tray 300 and the support frame 200 are in contact. In addition, the load sensor 110 may support the support bar 330 of the tray 300 disposed on the support frame 200. The upper surface of the load sensor 110 may be formed as a curved surface that goes in the inner direction of the load sensor 110. Accordingly, when the tray 300 is supported by the load sensor 110 and disposed on the support frame 200, the lower surface of the support bar 330 adheres to the upper surface of the load sensor 110, thereby drying the object to be dried. Accordingly, even if the center of gravity of the object to be built varies, the load sensor 110 can measure the load of the tray 300 while stably supporting the tray 300.

The thermal image sensor 120 may be coupled to another portion of the support frame 200 toward the surface of the object to be dried. Specifically, the thermal image sensor 120 may measure the heat distribution on the surface of the object to be dried in real time by combining with the upper frame 210 of the support frame 200. Further, a thermal image sensor 120 may be installed on each of the plurality of support frames 200, and heat distribution on the surface of each object disposed on each support frame 200 may be measured.

Excessive heat concentration occurs in a specific part of the surface of the object to be dried, and a phenomenon such as thermal deformation or discoloration may occur in the corresponding part. Alternatively, an excessive heat concentration phenomenon occurs on the surface of the to-be-dried object disposed on some of the support frames 200, such as thermal deformation or surface discoloration on the surface of some of the entire to-be-built. Symptoms may occur.

Therefore, in order to prevent this, the thermal image sensor 120 measures the heat distribution on the surface of the object to be dried in real time, and when heat is concentrated on a specific part of the surface of the object to be dried or some of the plurality of objects to be dried When heat is concentrated on the object to be dried, information about this can be transferred to the control unit.

The heat pump dryer of the present invention receives the state information of the object to be dried from the load sensor 110 or the thermal image sensor 120, and transmits a control signal to the heat pump module to control the heat pump module according to the state information of the object. It may further include a control unit for transmitting.

First, the control unit may receive load information for each object to be built contained in the tray 300 disposed on each support frame 200 from the load sensor 110. In addition, the degree of drying of each object may be determined by using the load information for each object. As the moisture of the object evaporates, the load of the object decreases, so the dry state of the object can be determined by measuring the load of each object, and the estimated time of completion of drying of the object can be derived by quantifying this. In addition, the degree of drying progress of the to-be-dried can be quantified and derived. In addition, the estimated drying completion time and the degree of drying of the object contained in each tray 300 may be displayed on a display installed outside the chamber 600.

And, in the heat pump dryer of the present invention, since the air inside the chamber 600 is circulated by the plurality of blowers 430, each area in which air is mainly circulated by each blower 430 is set, and each It is possible to distinguish the support frame 200 installed in the area. Here, a number is assigned to each support frame 200, and a number may be assigned to each area. The control unit receives the load information for each support frame 200, and when the estimated drying completion time increases in a predetermined area, increases the output of the blower 430 that circulates air in the corresponding area. It is possible to reduce the estimated time to complete drying.

In addition, the controller may receive heat distribution information on the surface of each object contained in the tray 300 disposed on each support frame 200 from the thermal image sensor 120. And, by using the heat distribution information for each object to be dried, it is possible to determine the heat concentration for a specific part of the surface of a predetermined object or the heat concentration for some of the plurality of objects to be dried. When the concentration phenomenon occurs, information on the heat concentration phenomenon may be displayed on the display. The heat concentration may be determined by the control unit as occurring when the average value of the surface heat distribution of each object exceeds a preset value input to the control unit, and the heat distribution image of the object in which such a heat concentration phenomenon occurs is at least More than one may be displayed on the display. In this case, the user may perform predetermined checks and corrections on the heat pump dryer of the present invention, such as checking the position of the tray 300 in order to remove the abnormal heat concentration phenomenon.

And, as described for the load sensor 110, each support frame 200 and each area are divided, and the control unit receives information on the surface heat distribution of each object, and When the heat concentration phenomenon occurs in the dry matter, the output of the blower 430 that circulates the air in the area where the object to be dried is located may be reduced.

The chamber 600 may have a cylindrical shape having a space therein. Chamber 600 may be a sealed container to reduce the pressure therein. In addition, the heat pump module may heat and circulate the air inside the chamber 600. In addition, the heat pump module may improve drying performance by removing moisture contained in the air inside the chamber 600. The pressure control unit 500 may be connected to the chamber 600 to reduce the internal pressure of the chamber 600. Thereby, the drying performance of the object to be dried can be improved.

The heat pump module may include a compressor 450, a condenser connected to the compressor 450, and an evaporator 420 connected to the condenser. The compressor 450 and the condenser may condense the fluid and emit heat. The evaporator 420 may absorb heat by vaporizing the condensed fluid. In addition, the heat pump module, a main condenser 411 installed inside the chamber 600 to supply heat to the object to be dried, and an auxiliary unit installed outside the chamber 600 to control the temperature inside the chamber 600 A condenser 412, may be provided. In addition, the heat pump module may further include an evaporator 420 and a blower 430 installed between the evaporator 420 and the main condenser 411 to circulate the air inside the chamber 600.

The condenser may heat the air inside the chamber 600 to a predetermined temperature. The condenser may supply heated air to the tray 300. The evaporator 420 removes moisture contained in the internal air of the chamber 600. The evaporator 420 removes moisture from the internal air contained by absorption from the object to be dried. The blower 430 may continuously circulate the internal air to continuously supply hot dry air to the tray 300.

Meanwhile, the condenser may include a main condenser 411 and an auxiliary condenser 412. The main condenser 411 may be disposed inside the chamber 600, and the auxiliary condenser 412 may be disposed outside the chamber 600. The main condenser 411 may heat the internal air circulated by the blower 430 to a predetermined temperature. The auxiliary condenser 412 may auxiliaryly condense the fluid that has passed through the main condenser 411.

That is, the auxiliary condenser 412 may auxiliaryly condense the fluid outside the chamber 600 in order to maintain the internal air at a constant temperature through the main condenser 411. Accordingly, the heat pump module according to an embodiment of the present invention may structurally heat the temperature of the air inside the chamber 600 to a predetermined temperature through the auxiliary condenser 412. That is, without a separate temperature control device, the temperature of the air inside the chamber 600 can be controlled within a certain range. Therefore, economic operation of the dryer may be possible.

The blower 430 may be disposed between the evaporator 420 and the main condenser 411. In addition, the blower 430 may circulate the air inside the chamber 600. That is, the blower 430 may flow internal air heated in the condenser from one side of the support frame to the other side. The internal air may hit the wall of the chamber 600 adjacent to the other side of the support frame and may be introduced back into the evaporator 420 through a space between the inner circumferential surface of the chamber 600 and the support frame.

The heat pump dryer of the present invention may further include a drain part 700 connected to the evaporator 420. In addition, the drain unit 700 is a drain pipe 710 for collecting and draining moisture condensed on the surface of the evaporator 420, a drain pump connected to the drain pipe 710, and a drain pump connected to the drain pump to store moisture. It may have a storage container. The drain pipe 710 may collect and drain moisture condensed on the surface of the evaporator 420. The drain pump may be connected to the drain pipe 710. When the pressure inside the chamber 600 is reduced, the drain pump may discharge moisture collected from the inside of the chamber 600 to the outside of the chamber 600. In order to remove moisture from the object to be dried, the air inside the chamber 600 must be maintained at a high temperature and dryness, and thus moisture condensed on the surface of the evaporator 420 may be discharged to the outside of the chamber 600. The storage container is connected to the vacuum drain pump, and the moisture discharged by the drain pump is stored in the storage container.

The heat pump module houses the evaporator 420, the blower 430, the main condenser 411 and the auxiliary condenser 412, and has an inlet 441 and an outlet 442 of the internal air of the chamber 600. (440) may be further provided. The housing 440 may accommodate the evaporator 420, the blower 430, and the main condenser 411. The housing 440 may have an inlet 441 disposed on one side and an outlet 442 disposed on the other side. The inlet 441, the evaporator 420, the blower 430, and the main condenser 411 may be arranged in the order along the central axis of the cylindrical chamber 600. The housing 440 guides the air inside the chamber 600 to pass through the inlet 441, the evaporator 420, the main condenser 411, and the outlet 442 in order. Accordingly, the air inside the chamber 600 may be dehumidified and heated to be supplied to the tray 300 in a high temperature dry state. Meanwhile, the housing 440 may be disposed to be spaced apart from the inner surface of the chamber 600 by a separate supporting member (not shown). This may be the same for the drying chamber 620. Accordingly, cleaning and maintenance of the interior of the housing 440 may be performed inside the chamber 600 and thus may be facilitated. In addition, by separating the housing 440, it is possible to minimize induction and obstacles to circulating inside the chamber 600 of the air inside the chamber 600.

The heat pump dryer of the present invention is formed in a shape surrounding a support frame portion formed of a plurality of support frames 200 inside the chamber 600 to fix and support each support frame 200, and the housing 440 It may further include a drying room 620 connected to. The drying chamber 620 may be formed to be spaced apart from the inner surface of the chamber 600, so that a recovery passage 640 that is a passage between the inner surface of the chamber 600 and the drying chamber 620 may be formed. The drying chamber 620 may have a polygonal cylindrical shape or a cylindrical shape.

Accordingly, as shown in the arrow of FIG. 1, the air (gas) discharged from the outlet 442 of the housing 440 flows into the drying chamber 620 and then passes through the drying chamber 620 to dry the object to be dried. The flow direction may be changed by the first circulation wall 631 of the chamber 600. In addition, the air whose flow direction is changed flows along the recovery passage 640 in a direction opposite to the flow direction when passing through the drying chamber 620, and then the flow direction is changed again by the second circulation wall 632, and the inlet 441 And may flow into the housing 440. And, such a cycle may be continuously repeated.

In the embodiment of the present invention, the inner surfaces of the first circulation wall 631 and the second circulation wall 632 are expressed as being flat, but are not limited thereto, and the first circulation wall 631 and the second circulation wall Since the inner surface of the wall 632 is formed in a curved surface, it is possible to easily change the direction of air.

The pressure control unit 500 may be connected to the chamber 600 to decompress the interior of the chamber 600. Here, when the objects to be dried are dried under reduced pressure, drying performance may be improved. As an example, the pressure control unit 500 may adjust the internal pressure of the chamber 600 in a range from -0.4 bar to 0 bar. Drying performance may be improved as the internal pressure of the chamber 600 is reduced. However, when considering both drying performance and power consumption, it is preferable to adjust the internal pressure of the economical chamber 600 to -0.2 bar.

The pressure control unit 500 may include a pressure control pump, which is a pump connected to the chamber 600. In addition, the chamber 600 may include a plurality of through holes 610 connected to the pressure control unit 500, and the chamber 600 has a cylindrical shape, and a plurality of through holes in the circular cross section of the chamber 600 ( 610) Each may be spaced apart by a predetermined angle (a) along the circumferential direction. As shown in Fig. 2, each through hole 610 is simply expressed for convenience of understanding, and the inside of the chamber 600 and the pressure control unit 500 are connected by each through hole 610. I can.

At least one pressure regulating pump may be disposed. Meanwhile, the chamber 600 may have a plurality of through holes 610 connected to the pressure control unit 500. During the drying process, the air inside the chamber 600 may be circulated by the heat pump module. In addition, the internal pressure of the chamber 600 may be reduced. Accordingly, when the internal pressure of the chamber 600 is reduced, the circulation of the internal air of the chamber 600 may be affected.

In order to solve this, the plurality of through holes 610 may be spaced apart from each other at a predetermined angle (a) along the circumferential direction on the circular cross-section of the cylindrical chamber 600. That is, the plurality of through holes 610 may be disposed at 90 degrees apart from each other on a circular cross-section of the cylindrical chamber 600. Since the plurality of through holes 610 are arranged at regular intervals, the effect of the internal pressure reduction of the chamber 600 on the internal air circulation of the chamber 600 can be minimized. As an example, any one through hole 610 may be disposed at 12 o'clock in a circular cross section. In addition, the other through hole 610 may be disposed in the direction of 3 o'clock in a circular cross section. Another through hole 610 may be disposed at 6 o'clock, and the other through hole 610 may be disposed at 9 o'clock.

Hereinafter, a method of drying an object to be dried using the heat pump dryer of the present invention will be described.

First, in the first step, the internal pressure of the chamber 600 in which the object to be dried is provided may be adjusted. In addition, in the second step, the air inside the chamber 600 may be circulated by the blower 430 and the air inside the chamber 600 may be heated by the condenser. And, in the third step, the heat supplied to the object may be controlled by using the state information of the object from the load sensor 110 or the thermal image sensor 120. Next, in the fourth step, the evaporator 420 may remove moisture contained in the air inside the chamber 600.

The internal pressure of the chamber 600 may be reduced in the range of -0.4 bar to 0 bar. In particular, economic operation taking into account power consumption and drying performance may be -0.2 bar. The blower 430 may supply the air inside the chamber 600 in a high-temperature drying state to the tray 300. Moisture absorbed from the to-be-dried object disposed on the tray 300 may be removed through the evaporator 420. Meanwhile, the air inside the chamber 600 may be heated to about 65 degrees Celsius through a condenser.

The above description of the present invention is for illustrative purposes only, and those of ordinary skill in the art to which the present invention pertains will be able to understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative and non-limiting in all respects. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

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

110: load sensor 120: thermal image sensor
200: support frame 210: upper frame
220: lower frame 230: vertical bar
240: horizontal bar 300: tray
310: support plate 320: tray frame
330: support bar 411: main condenser
412: auxiliary condenser 420: evaporator
430: blower 440: housing
441: inlet 442: outlet
450: compressor 500: pressure control unit
600: chamber 610: through hole
620: drying room 631: first circulation wall
632: second circulation wall 640: recovery passage
700: drain part 710: drain pipe

Claims (13)

chamber;
A support frame portion installed in the chamber and formed by combining a plurality of support frames for supporting a tray supporting an object to be dried by removing moisture;
A heat pump module installed inside the chamber and drying the object to be dried;
A pressure control unit coupled to the chamber to adjust the pressure inside the chamber;
A load sensor formed at a portion of the support frame portion in contact with the tray to measure the load of the object and the tray; And
And a thermal image sensor installed inside the chamber and measuring the heat distribution on the surface of the object to be dried.
The method according to claim 1,
The load sensor is a hybrid pressure-sensitive heat pump dryer capable of confirming a state of an object to be dried, wherein the load sensor is installed at a portion of the support frame in which the lower portion of the tray and the support frame are in contact.
The method according to claim 1,
The thermal image sensor is a hybrid pressure-sensitive heat pump dryer capable of checking the state of the object to be dried, characterized in that coupled to the other portion of the support frame toward the surface of the object to be dried.
The method according to claim 1,
The load sensor or the thermal image sensor receives the state information of the object to be built, further comprising a control unit for transmitting a control signal to the heat pump module to control the heat pump module according to the state information of the object Hybrid pressure-sensitive heat pump dryer capable of checking the condition of the object to be dried.
The method according to claim 1,
The pressure control unit, a hybrid pressure reducing heat pump dryer capable of checking the state of the object to be dried, characterized in that it has a pressure control pump that is a pump connected to the chamber.
The method of claim 5,
The chamber is a hybrid pressure-sensitive heat pump dryer capable of checking the state of the object to be dried, characterized in that it has a plurality of through holes connected to the pressure control unit.
The method of claim 6,
The chamber has a cylindrical shape, and each of a plurality of through-holes on a circular cross-section of the chamber is spaced apart at a predetermined angle along a circumferential direction.
The method according to claim 1,
The heat pump module,
A main condenser installed inside the chamber to supply heat to the object to be dried, and
And an auxiliary condenser installed outside the chamber to control a temperature inside the chamber.
The method of claim 8,
The heat pump module,
Evaporator, and
And a blower installed between the evaporator and the main condenser to circulate the air inside the chamber.
The method of claim 9,
The heat pump module accommodates the evaporator, the blower, the main condenser, and the auxiliary condenser, and further includes a housing having an inlet and an outlet of the air inside the chamber. Heat pump dryer.
The method of claim 10,
Hybrid pressure-sensitive heat pump dryer capable of checking the state of the object to be dried, characterized in that it further comprises a drain connected to the evaporator.
The method of claim 11,
The drain part,
A drain pipe for collecting and draining moisture condensed on the surface of the evaporator,
A drain pump that is a pump connected to the drain pipe, and
A hybrid pressure-sensitive heat pump dryer capable of checking a condition of an object to be dried, comprising: a storage container connected to the drainage pump to store moisture.
In the drying method of the object to be dried using a hybrid pressure-sensitive heat pump dryer capable of checking the state of the object to be dried of claim 1,
A first step of adjusting the internal pressure of the chamber in which the object to be dried is provided;
A second step of circulating the air inside the chamber with a blower and heating the air inside the chamber with the condenser;
A third step of controlling heat supplied to the to-be-built by using state information of the to-be-dried from the load sensor or the thermal image sensor; And
And a fourth step of removing moisture contained in the air inside the chamber with an evaporator.

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