WO2016082745A1

WO2016082745A1 - Laterally-arranged heat pump clothes drying cabinet of deep dehumidification device

Info

Publication number: WO2016082745A1
Application number: PCT/CN2015/095428
Authority: WO
Inventors: 薛世山; 李成伟; 王亮; 马骥; 刘玉恩; 王庆伦
Original assignee: 浙江普林艾尔电器工业公司
Priority date: 2014-11-28
Filing date: 2015-11-24
Publication date: 2016-06-02

Abstract

A laterally-arranged heat pump clothes drying cabinet of a deep dehumidification device comprises a drying room (1) and a refrigeration and dehumidification unit. The refrigeration and dehumidification unit is placed on a side surface of the drying room (1) to form a high-position air suction and low-position air exhaust mode or a low-position air suction and high-position air exhaust mode. An air inlet (3) of the drying room is provided with an air bag (8), and drying air uniformly enters the drying room (1) through through-holes (801) formed on the air bag (8). The refrigeration and dehumidification unit comprises a first condenser (501), a second condenser (502), a third condenser (504) and an evaporator (503). Wet air is divided into two paths, one path of wet air flows through the first condenser (501) and the second condenser (502) for heating to obtain high-temperature drying air; the other path of wet air flows through the evaporator (503) for cooling and dehumidification and flows through the third condenser (504) for heating to obtain drying air; and the two paths of drying air are input into the drying room (1) after being mixed. The refrigeration and dehumidification unit solves the problem that because the condensation pressure and condensation temperature of an existing heat pump clothes drying machine at a speed-reduction drying stage are continuously increased, the power consumption of a compressor is increased, the pressure difference is increased, the compression ratio is increased, the energy efficiency ratio is decreased, the working condition is severely worsened, and even the compressor is burned down.

Description

Deep dehumidification equipment laterally placed heat pump dry closet

Technical field

The invention relates to the technical field of dry closet design, in particular to a heat pump dry closet which is arranged on the side of the dehumidification system and has a low condensing pressure and a deep subcooling depth dehumidification.

Background technique

The energy-saving characteristics of the heat pump have made it widely used in the fields of heating, hot water, drying and the like. Among them, the drying of wet materials requires a huge amount of heat, which is a large energy consumer. When the wet material is heated and dried, a large amount of low-grade hot humid air is generated after the drying operation. If heat pump technology can be used for heat and moisture recovery of these low-grade hot humid air, the energy is saved and the energy is reduced. The pollution of hot and humid air to the environment has important economic and environmental significance.

The existing heat pump dryers are mostly based on the drum washing machine, and are equipped with heat pump type heating and dehumidification equipment; most of the heat pump type clothes dryers adopt air closed circuit circulation mode. The air closed loop heat pump dryer is used for intermittent wet clothes drying operation, that is, the wet clothes are dried and dehumidified in the dry air after being placed in a cage in a cage (intermittently) in the heat pump condenser. When the air is heated by the condenser into a high temperature, low humidity dry air, flowing through the wet clothes for drying; in the early stage of the drying process, that is, the constant speed drying stage, the dry air changes "equal", the air devaluation (Energy density) is constant, but the temperature of the dry air drops sharply, the relative humidity and the absolute moisture content increase rapidly, and the sensible heat of the dry air is converted into the latent heat of the water vapor, and the wet load of the air increases rapidly. After the drying operation is completed, the hot and humid air carrying a large amount of wet load (water vapor) flows into the heat pump evaporator, and the heat is cooled in the evaporator. When the temperature of the hot and humid air drops below the corresponding dew point of the humid air, the air is in the air. The water vapor is condensed and released on the evaporator. The saturated air of part of the water vapor is separated by the evaporator, and is again heated by the condenser into a high-temperature, low-humidity dry air to enter the next drying cycle.

However, existing heat pump drying and refrigeration dehumidification technologies have the following problems:

1. The condenser ventilation is small, and the condensing pressure is raised, which causes the power consumption of the compressor to increase, the differential pressure to increase, the compression ratio to increase, and the energy efficiency ratio to decrease.

In the prior art refrigeration dehumidification system, during operation, the condensation heat release of the high temperature and high pressure refrigerant gas in the condenser is the sensible heat Q1 released by the humid air when the refrigerant gas is cooled and dehumidified by the evaporator. The sum of the steam condensation heat Q2 and the compressor's compression work A for the low-pressure refrigerant gas is generally about three times that of the sensible heat Q1 released by the humid air on the evaporator side. The condenser and evaporator of the refrigeration dehumidification system are in the same air duct, sharing a fan and ventilating in series; in order to dehumidify the suction air by the evaporator to effectively cool down to the dew point of the air, the ventilation of the fan is It can't be too big; it satisfies the ventilation of the evaporator to reduce the temperature and dehumidification, which is too small for the condenser; the temperature of the air flowing through the condenser rises too much, and the condenser condensation temperature rises, that is, the condensation pressure rises. The pressure difference between the condensing pressure and the evaporation pressure of the refrigeration dehumidification system is increased, the power consumption of the compressor is increased, the compression ratio is increased, and the energy efficiency ratio is lowered.

The outlet temperature of a conventional heat pump drying system (or refrigeration dehumidification system) in series with the evaporator condenser air duct can be derived from the wet air wetting diagram.

Referring to Fig. 9, it is assumed that the air state inhaled by the cooling and dehumidifying device in series with the evaporator condenser air passage corresponds to point a on the air enthalpy map, that is, the temperature, humidity, and enthalpy of the intake air are 40 ° C, 40% RH, respectively. , 89KJ / (kg dry air); starting from point a, 40 ° C, 40% RH, 89kJ / (kg dry air) of humid air, flowing through the evaporator is cooled to 24 ° C, 100% RH, 72kJ / ( b point of kg dry air), that is, saturated air; saturated air is further cooled in the evaporator, that is, water vapor is exothermicly condensed and precipitated, and the temperature and humidity enthalpy of the air when the evaporator is discharged becomes 21 ° C of point c, 100% RH, 62kJ / (kg dry air), dehumidification 3.3g / (kg dry air); in the process of a → b → c, the wet air enthalpy change (焓 difference) is 27kJ / (kg dry air) The enthalpy difference (heat) of the 27kJ/(kg dry air) wet air is absorbed by the evaporator, converted into the heat of vaporization of the refrigerant, and then sent to the condenser by the compressor to be released; only the condenser releases the piece.焓 difference (heat), c point air is heated by the condenser to dry to c' point, the air state changes from point c to 48.3 ° C, 22% RH, 89 kJ / (kg dry The c' point of the gas; and the heat release of the condenser is the sum of the heat absorbed by the evaporator and the compression work of the compressor, so the compressor's compression work is added, and the state of the air flowing through the condenser is from 48.3 ° C, 22 The c' point of %RH, 89kJ/(kg dry air) further rises to 56°C, 15% RH, The c" point of 97kJ / (kg dry air). The outlet temperature of the condenser reaches 56 ° C, in order to achieve the condenser condensation temperature of the refrigerant in the air discharge condenser is higher than the outlet temperature, up to 60 ° C about.

If the refrigerant evaporation temperature in the evaporator is further reduced to achieve deep dehumidification with humid air, for example, starting from point a on the wetting diagram, a point of 40 ° C, 40% RH, 89 kJ / (kg dry air) The humid air, flowing through the evaporator and dehumidifying to the point e of 15.2 ° C, 100% RH, 43 kJ / (kg dry air), the temperature, humidity and enthalpy of the outlet of the condenser will reach 70 ° C, 5.5% RH respectively. 99kJ / (kg dry air), the condensation temperature of the refrigerant in the condenser will reach about 75 °C.

The pressure difference between the condensing pressure and the evaporating pressure of such a refrigeration dehumidification system is too large, the power consumption of the compressor is too large, the compression ratio is too high, and the energy efficiency ratio is too low, such a working condition is unsafe!

2. The monolithic condenser weakens the "supercooling" of the refrigerant liquid at the end of the condenser, causing the evaporator to absorb heat and absorb the dehumidification capacity.

The existing heat pump dryer and the refrigeration dehumidifier adopt an integral condenser, and attempt to continuously complete the heat release and the condensation of the refrigerant gas in the sensible heat portion of the superheated refrigerant gas discharged from the compressor in one integral condenser. The exothermic liquefaction and the refrigerant liquid are further cooled and subcooled.

In fact, since the materials selected for the monolithic condenser are good conductors of heat such as copper and aluminum, the "heat release and cooling of the sensible heat of the refrigerant gas", "condensation and liquefaction of the refrigerant gas" and " The refrigerant liquid is further cooled and subcooled." The three regions with significant temperature drop form a "thermal bridge" along the fin direction, causing heat to "heat release and cooling of the sensible heat of the refrigerant gas" and "refrigerant The gas condensation exothermic liquefaction zone is transferred along the fins to the "refrigerant liquid cooling and subcooling" zone, severely impairing the "supercooling" of the refrigerant liquid at the end of the condenser.

Since the refrigerant liquid is "subcooled" at the end of the condenser, the temperature of the refrigerant liquid is much higher than the evaporation temperature of the refrigerant in the evaporator, and the refrigerant liquid first lowers its temperature before evaporating and absorbing heat in the evaporator. To the evaporation temperature, for this reason, in the throttle valve (capillary) before entering the evaporator, a small amount of liquid refrigerant evaporates and vaporizes without entering the evaporator, absorbing the sensible heat of most liquid refrigerants to promote its "supercooling" "To the evaporation temperature. And a small amount of liquid refrigerant does not enter the evaporator The vaporization is vaporized in advance in the capillary, which in turn causes the evaporator to absorb heat and absorb the dehumidification capacity.

3, dry area, even distribution of air evenly flow and other issues

Many companies and R&D personnel have tried to set up a vapor compression refrigeration dehumidification system on the closet, so that the wardrobe can store the clothes and have the function of cooling and dehumidifying and drying the clothes by using the heat pump system.

However, for the heat pump type dry closet, how to solve the problem that the air is evenly distributed and evenly distributed in the main space area of the closet, that is, the dry area, that is, how to make the dry air outputted between the cooling and dehumidifying equipment flow uniformly through the horizontal section of the closet and the wet clothes. The problem of efficient heat exchange and no dead ends has not been solved very well.

Also, how to solve the problem that the wire scraping off from the clothes during the drying process adheres to the air inlet of the evaporator and the condenser during the circulation, and the blockage caused by the fin gap of the evaporator and the condenser of the refrigeration dehumidification system; How to solve the problem of the natural effluent caused by the difference in space height due to the condensed water deposited by the evaporator of the dehumidification system on the humid air cooling and dehumidification; there is no effective solution to these problems.

Summary of the invention

In order to solve the above problems, the present invention provides a deep dehumidification apparatus for laterally arranging a heat pump dry wardrobe, comprising a drying room and a equipment room, wherein the equipment room is provided with a cooling and dehumidifying device, and between the drying room and the equipment room An air inlet and an air outlet are respectively disposed, and a closed air circulation is formed between the drying room and the device; wherein the cooling and dehumidifying device comprises a first condenser, a second condenser, a third condenser, and a section Flow valves, evaporators, fans and compressors;

The first condenser is disposed side by side with the second condenser, the evaporator is disposed side by side with the third condenser, and the fan is disposed at a lower side of the evaporator and the third condenser; The first condenser and the second condenser are connected in series or in parallel with the refrigeration line, and then connected in series with the refrigeration line of the third condenser; the first condenser, the second condenser, the third condenser, and the section The flow valve is connected to a pipe in the evaporator and forms a circulation passage with the compressor for the refrigerant to flow through;

The humid air formed after the hot air exchange between the dry air and the wet clothes in the drying chamber is divided into two paths after entering the device from the air inlet, and a humid air is sequentially passed through the first condenser and the first The second condenser is heated to obtain high-temperature dry air, and the other path contains humid air, which is sequentially passed through the evaporator to cool down and dehumidify, and the third condenser is heated and heated to obtain dry air; the high-temperature dry air and the dry air are mixed and then sucked by the fan, and then The fan outlet is discharged into the drying chamber.

Preferably, the equipment room is disposed at a side of the drying room, and the air inlet and the air outlet are disposed at upper and lower ends of the equipment room and the drying room.

Preferably, the first condenser, the second condenser, the third condenser and the evaporator constitute an entire condensing evaporation module, the condensing evaporation module is inclined, and both sides of the condensing evaporation module are respectively Two separate wedge-shaped channels are formed between the two side walls of the device.

Preferably, the first condenser and the second condenser are arranged side by side to form an upper condensing evaporation module, and the first condenser and the second condenser are spaced apart from each other; the third condenser The lower condensing evaporation module is formed side by side with the evaporator, and the third condenser and the evaporator are spaced apart from each other.

Preferably, the upper condensing evaporation module and the lower condensing evaporation module are separated by a partition between the upper and lower sides.

Preferably, the bottom of the evaporator is provided with a water collecting tray.

Preferably, a wind bag is disposed at a bottom of the drying room, and an air outlet of the device is connected to the air bag; a plurality of through holes are disposed on the wind bag, and dry air is emitted from the air outlet of the device. After passing through the wind pack, the drying chamber is accessed through the through hole.

Preferably, the diameter of the through hole on the wind pack gradually decreases from one side to the other side toward the other side.

The invention provides a deep dehumidification device for laterally arranging a heat pump dry wardrobe, comprising a drying room and a device disposed on a side of the drying room, wherein the equipment room is provided with a cooling and dehumidifying device, and the drying room and the device are Between the air inlet and the air outlet; the air inlet between the equipment and the air outlet between the equipment Separating at an upper end and a lower end of the drying chamber, or between the air inlet of the device and the air outlet of the device respectively at a lower end and an upper end of the drying room;

Forming a closed circuit air circulation between the drying room and the device, wherein the humid air formed by the hot and dry exchange of the dry air and the wet clothes in the drying room enters the device through the air inlet port, and the cooling and dehumidifying device is Drying air is obtained after cooling and dehumidifying and heating; the air inlet of the drying room is provided with a wind bag communicating with the air outlet of the drying room and the device, and the dry air in the equipment room passes through the device The air outlet enters the wind bag, and the dry air is evenly distributed into the drying room through the wind bag.

Preferably, the wind bag is provided with a plurality of through holes, and the dry air from the air outlet passes through the air bag and then uniformly enters the drying room through the through holes.

Preferably, the diameter of the through hole of the wind bag gradually decreases from the side closer to the device to the other side.

Preferably, a filter screen is disposed on the air inlet of the device.

The invention relates to a deep dehumidification device for laterally arranging a heat pump dry closet. The above technical solution is adopted, which has the following advantages and positive effects compared with the prior art:

1. A deep dehumidification device for laterally arranging a heat pump dry closet, providing a low condensing pressure deep subcooling depth dehumidification heat pump dry closet, dividing the humid air into two paths, only a part of which contains humid air flowing through The evaporator, so that the amount of humid air flowing through the evaporator is reduced; and the amount of air to be dehumidified by the evaporator is reduced, which reduces the evaporation pressure and evaporation temperature of the evaporator, thereby cooling the humid air flowing through the evaporator. The amplitude is enlarged, and the amount of water condensed and discharged by the water vapor in the humid air is increased, thereby improving the dehumidification amount and the dehumidification efficiency, and achieving deep dehumidification.

2. The invention provides a deep dehumidification device for laterally arranging a heat pump dry closet, which divides the humid air into two paths, so that one air directly flows through the first condenser and the second condenser, which is compared with the conventional technology. The invention greatly increases the ventilation amount of the first condenser and the second condenser when the evaporator flows through the condenser, and reduces the refrigerant gas in the first condenser, the second condenser and the third condenser. The condensing pressure improves the compressor operating conditions, thereby increasing the dehumidification energy efficiency ratio.

3. The invention provides a deep dehumidification device for laterally arranging a heat pump dry closet, dividing the condenser into three, and splitting into a first condenser, a second condenser and a third condenser, wherein the refrigerant pipeline communicates with each other. Thereby, the fin thermal bridge between the first condenser, the second condenser and the third condenser is disconnected, the subcooling degree of the refrigerant liquid at the end of the third condenser is greatly improved, and the refrigerant liquid is reduced in the section. The vaporization ratio in the flow device increases the evaporation heat absorption capacity of the refrigerant in the evaporator, and greatly improves the dehumidification energy efficiency ratio.

4. A deep dehumidification device provided by the present invention laterally houses a heat pump dry closet, and the equipment room is disposed on one side of the drying room, and a wind bag is arranged at the air inlet of the drying room, and dry air is sprayed from the air outlet of the device. After entering the wind bag, the dynamic pressure head is transformed into a static pressure head, and a positive pressure zone is formed in the wind bag. The dry air in the positive pressure zone uniformly enters the dry space through the through hole on the wind bag, and effectively exchanges heat with the wet clothes without leaving a dead angle;

5. The invention provides a deep dehumidification device for laterally arranging a heat pump dry closet, wherein the space near the air outlet of the drying room is a buffer zone containing dry air after drying, and the air circulation cross-sectional area is larger than the air circulation cross-sectional area of the central portion of the suspended wet clothes. The dry air passes through the wet clothes and enters the buffer space near the air outlet of the drying room, and then the speed is greatly reduced, and the wire dust wrapped by the air naturally separates and settles.

DRAWINGS

The above and other features and advantages of the present invention will be more clearly understood from

1 is a schematic view showing the overall structure of a laterally disposed heat pump dry closet of a deep dehumidification apparatus according to the present invention;

Figure 2 is a partial cross-sectional view showing a laterally disposed heat pump dry closet of a deep dehumidification apparatus according to the present invention;

3 is a schematic structural view of a refrigeration and dehumidification apparatus of the present invention;

4 is a schematic structural view of a condensing evaporation module of the present invention;

Figure 5 is a schematic structural view of the wind bag of the present invention;

Figure 6 is a schematic view showing the flow of air in the drying room and the equipment room of the present invention;

Figure 7 is a cycle diagram of the wetting diagram of the present invention;

Figure 8 is a comparison diagram of a refrigeration dehumidification pressure map of the prior art and a refrigeration dehumidification pressure map of the embodiment of the present invention;

Fig. 9 is a compression and dehumidification cycle pressure diagram of the prior art in which the evaporator condenser has the same ventilation capacity.

Symbol Description:

1-dry room

2-device room

3-air inlet

4-air outlet

5-condensation evaporation module

501-first condenser

502-second condenser

503-evaporator

504-third condenser

505-separator

506-drain tray

507-bracket

6-fan

7-compressor

8-wind package

801-through hole

9-water tank

10- clothes rail

11-narrow cabinet

detailed description

Referring to the drawings showing embodiments of the invention, the invention will be described in more detail below. However, the invention may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are presented so that this disclosure will be thorough and complete, and the scope of the invention is fully understood by those skilled in the art. In the drawings, the size and relative dimensions of layers and regions may be exaggerated for clarity.

Embodiment 1

Referring to Figures 1-8, the present invention provides a deep dehumidification apparatus for laterally arranging a heat pump dry closet, which is composed of a drying room 1 and a equipment room 2, and a cooling and dehumidifying device is arranged in the equipment room 2, and the dried clothes are suspended in a drying room. 1 on the clothes rail 10; a closed air circulation is formed between the drying room 1 and the equipment room 2, and the humid air in the drying room 1 is cooled and dehumidified by the cooling and dehumidifying device and heated to obtain dry air, and then sent to the drying room. Dry the clothes in 1 .

Specifically, the shell of the dry closet can be composited by a heat insulating material such as a wooden wall panel, a steel wood panel or a polyurethane foam, and is not limited herein. As shown in Fig. 2, the entire dry closet is divided into a drying room 1 and a equipment room 2, and the equipment room 2 may be located on the side of the drying room 1, or may be located at the bottom of the drying room 1, and the like, and is not limited herein. The preferred drying rooms 1 are arranged side by side on the side of the equipment room 2, and the equipment room 2 as a whole is arranged in a vertical direction. The air inlets 3 and the equipment are arranged between the drying room 1 and the upper and lower ends of the equipment room 2. The air outlet 4 is located at the upper end, and the air outlet 4 is located at the lower end. Of course, the air outlet 4 is located at the upper end and the lower end of the air inlet 3, which is not limited herein; in this embodiment, the air inlet 3 is located at the upper end. The air outlet 4 is located at the lower end as an example for description. The air supply mode between the drying room 1 and the equipment room 2 is “top suction bottom row” from the perspective of the equipment, and is cooled and dehumidified by the inter-equipment cooling and dehumidifying device. The dry air heated by the heating is discharged upward from the bottom of the drying chamber 1.

In the present embodiment, in addition to the equipment room 2 on the side of the drying room 1, the excess space can be further provided with a narrow cabinet 11, and the narrow cabinet 11 and the equipment room 2 are arranged side by side, thereby having the advantage of making full use of the wardrobe space.

In the present embodiment, the cooling and dehumidifying apparatus includes a condensing evaporation module 5, a fan 6, and a compressor 7 which are disposed from top to bottom along the equipment room 1. The condensing evaporation module 5 includes a first condenser 501, a second condenser 502, a third condenser 504, and an evaporator 503; a first condenser 501, a second condenser 502, a third condenser 504, and an evaporator. 503 is composed of a serpentine refrigeration pipeline and fins disposed outside the serpentine refrigeration pipeline, and the serpentine refrigeration pipelines of the first condenser 501 and the second condenser 502 are connected in series or in parallel, and then to the third condenser. 504 is connected in series with the refrigeration line in the evaporator 503, and is connected to the compressor 7 to form a circulation passage through which the refrigerant flows.

In this embodiment, the first condenser 501 and the second condenser 502 are arranged side by side to form an upper condensing evaporation module for the air to flow through; and the first condenser 501 and the second condenser 502 are spaced apart by a certain distance, so that the first The fins of a condenser 501 are not in contact with the fins of the second condenser 502, thereby breaking the fin thermal bridge between the first condenser 501 and the second condenser 502, so as to sequentially enter the second condenser 502. The heat exchange between the air of the first condenser 501 and the refrigerant flowing in the refrigeration line of the first condenser 501 and the second condenser 502 maintains the characteristics of the reverse flow operation to exert the second condensation from the compressor 7 The large temperature difference of the high temperature overheating of the refrigerant gas at the front end of the 502 is advantageous. The evaporator 503 and the third condenser 504 are arranged side by side to form a lower condensing evaporation module for the air to flow through, and the same evaporator 503 and the third condenser 504 are spaced apart from each other, and the copper tube of the third condenser 504 is arranged. The fins are also broken and spaced a certain distance, thereby breaking the fin thermal bridge between the evaporator 503 and the third condenser 504 and between the copper tubes of the third condenser 504 itself, improving the third The subcooling degree of the refrigerant liquid at the end of the condenser 504 is beneficial to reducing the vaporization ratio of the refrigerant liquid in the throttling device, and ensuring the integrity and effectiveness of the evaporation heat absorption capability of the refrigerant liquid in the evaporator 503, thereby improving The evaporation endothermic capacity and dehumidification ability of the evaporator 503.

The lower condensing evaporation module is disposed on the lower side of the upper condensing evaporation module, and the first condenser 501 and the evaporator 503 are located on the same side, and the upper condensing evaporation module and the lower condensing evaporation module are spaced apart by a partition 505 to prevent the flow. The air passing through the condensing evaporation module interacts with the air flowing through the lower condensing evaporation module; the lower end of the lower condensing evaporation module is provided with a water collecting tray 506 for collecting the condensed water on the evaporator 503, and the water collecting tray 506 is also combined with The water tanks 9 are connected, and the condensed water in the water collecting tray 506 is directly discharged into the water tank 9, and the water tank 9 The location of the settings is not limited here. The first condenser 501, the second condenser 502, the third condenser 504, the evaporator 503, the partition 505, and the water collecting tray 506 are connected by a bracket 507 to form an entire condensing evaporation module 5, a fan 6, and a compressor 7. , as shown in Figure 4.

Referring to FIG. 6, in the embodiment, the condensing evaporation module 5 is inclined in a whole manner, and the upper end thereof abuts against the side wall of the device room 2 on the side close to the drying room 1, and the lower end abuts against the other side wall of the equipment room 2, Two independent wedge-shaped passages are formed between the left and right sides of the condensing evaporation module 5 and the two side walls of the equipment room 2, the wedge-shaped passages are favorable for ensuring that the air uniformly passes through the condensing evaporation module 5; the humid air in the drying room 1 enters through the air inlet 3 After the equipment room 2, the wedge channel of the left side of the condensing evaporation module 5 is first flowed into, and then the humid air is divided into two paths, respectively, passing through the upper condensing module and the lower condensing evaporation module; a part of the humidified air is heated to a high temperature through the upper condensing module. Dry air, another part containing humid air passes through the lower condensing evaporation module, first cooled and dehumidified by the evaporator 503, and then heated by the condenser 504 to form dry air, and the two airs are mixed in the right wedge channel of the condensing evaporation module 5, The fan 6 is discharged from the air outlet 4 into the drying chamber.

A wind bag 8 is disposed at the bottom of the drying room 1, and the air outlet 4 communicates with the wind bag 8. The dry air from the air outlet 4 passes through the wind bag 8 and enters the drying room 1. The wind bag 8 is provided with a plurality of through holes 801 arranged in sequence, and the high-temperature dry air in the wind bag 8 is discharged into the drying room 1 through the through holes 801; wherein, as shown in FIG. 5, from the side close to the equipment room 1 Starting from the other side, the diameter of the through hole 801 on the wind pack 8 is gradually reduced, and the present invention ensures that the air in the wind pack 8 can be uniformly discharged to the dry space 1 by setting the diameter of the through hole 801.

The invention provides a deep dehumidification device for laterally arranging a heat pump dry closet, and the working process thereof is as follows:

1. Dehumidification process with humid air

The humid air in the drying room 1 enters into the equipment room 2 from the air inlet; under the action of the fan 7, the humid air flows to the condensing evaporation module 5; the humid air is divided into two paths, and the humid air flows in one pass. The first condenser 501 and the second condenser 502 exchange heat with the refrigerant in the first condenser 501 and the second condenser 502 through the fins, so that the humidified air of the road absorbs heat and heats up (at the same time, the first The condenser 501 and the refrigerant in the second condenser 502 are cooled and condensed to become high-temperature dry air; the larger the flow rate of the air, the greater the decrease in the condensing pressure of the refrigeration and dehumidification device. The other path of humid air first flows through the evaporator 503, cools and dehumidifies into a low temperature saturated air, and then flows through the third condenser 504 to absorb heat. (At the same time, the refrigerant inside the third condenser 504 is cooled and condensed and supercooled) to become dry air. Then, the two dry air are mixed to become new dry air; the new dry air is pushed by the blower 7 from the air outlet 4 into the wind pack 8, and then flows from the plurality of through holes 801 into the dry space 1, and is dried. The wet clothes in the room 1 are subjected to heat and moisture exchange, and after moisture absorption and cooling, the buffer is inserted into the top buffer transition zone of the wardrobe, and the dry dehumidification system is again sucked from the air inlet 3 to enter the next cycle.

7 is a cycle diagram of a humidification diagram of air in a laterally placed heat pump dry closet of a deep dehumidification apparatus according to the present invention, wherein a path a→c→d→a is flowed through the first condenser 501 and the second condensation Schematic diagram of the change of the enthalpy, temperature and moisture content of the air of the device 502; the path a→b→b′→b”→d→a is the enthalpy and temperature of the air flowing through the evaporator 503 and the third condenser 504 And a schematic diagram of the change in moisture content.

Second, the refrigerant recycling process

The pressurized high-temperature refrigerant gas from the compressor 7 first flows through the second condenser 502, the first condenser 501, and the third condenser 504 in order to condense and liquefy the refrigerant gas to become a low temperature. The refrigerant liquid is supercooled; the refrigerant liquid passes through the throttle valve and the evaporator 503, absorbs the heat of the air flowing through the evaporator 503, and then evaporates into a low-pressure refrigerant gas; the compressor 7 further reduces the low pressure coming from the evaporator 503. After the refrigerant gas is pressurized, it is supplied to the second condenser 502, the first condenser 501, and the third condenser 504, thereby forming a complete refrigerant cycle.

8 is a comparison diagram of a refrigeration dehumidification pressure map in the conventional art and a refrigeration dehumidification pressure map according to an embodiment of the present invention, in which:

1-2-3-4-5-6-1 is a refrigeration dehumidification cycle in the prior art;

1'-2'-3'-4'-5'-6'-1' is the refrigeration and dehumidification cycle in the present embodiment.

It can be seen that the condensing pressure in the low condensing pressure deep supercooling high efficiency dehumidifier provided by the present invention is lowered, the degree of subcooling is increased, the cooling capacity is increased, and the cooling and dehumidifying efficiency is improved.

The heat pump dry wardrobe provided by the invention divides the humid air into two paths, and only a part of the moisture-containing air flows through the evaporator, so that the amount of humid air flowing through the evaporator is reduced; and the evaporator is cooled and dehumidified. The amount of reduction reduces the evaporation pressure and evaporation temperature of the refrigerant in the evaporator, thereby The cooling air flowing through the outside of the evaporator is expanded, and the amount of water condensed and discharged by the water vapor in the humid air is increased, thereby improving the dehumidification amount and the dehumidification efficiency, and achieving deep dehumidification.

The heat pump dry wardrobe with low condensing pressure and deep subcooling deep dehumidification characteristic provided by the invention divides the humidified air into two paths, so that one air directly flows through the first condenser 501 and the second condenser 502, compared with the conventional technology. In the case where the evaporator first flows through the condenser and then flows through the condenser, the present invention greatly increases the ventilation amount of the first condenser 501 and the second condenser 502, and reduces the first condenser 501, the second condenser 502, and the first The condensing pressure of the refrigerant gas in the triple condenser 504 improves the operating condition of the compressor 7, thereby improving the dehumidification energy efficiency ratio.

In addition, the present invention divides the condenser into three, and splits into a first condenser 501, a second condenser 502, and a third condenser 504, which are connected to the refrigerant pipeline, thereby disconnecting the first condenser 501, The fin thermal bridge between the two condenser 502 and the third condenser 504 and the fin thermal bridge between the copper tube rows of the third condenser 504 itself greatly increase the refrigerant liquid at the end of the third condenser 504 The degree of subcooling is beneficial to reduce the vaporization ratio of the refrigerant liquid in the throttling device, improve the evaporation heat absorption capacity of the refrigerant in the evaporator, and greatly improve the energy efficiency ratio of the dehumidifier.

The following table shows the operating condition performance test table of the American Emerson Copeland ZW108KS compressor in 2011. It can be seen that as the condensing temperature (condensing pressure) of the refrigeration system decreases, the energy efficiency ratio of the system increases rapidly. An empirical case in which the dehumidification energy efficiency ratio of the deep dehumidification equipment laterally placed in the heat pump dry closet is greatly improved.

In the above table, H is the heating capacity, P is the motor suction power; evaporation temperature 10 ° C, condensation temperature 65 ° C, energy efficiency ratio is 3.87; evaporation temperature 10 ° C, condensation temperature 55 ° C, energy efficiency ratio is 4.83; evaporation temperature 10 ° C, The condensation temperature was 45 ° C and the energy efficiency ratio was 6.12. It can be seen that the condensation temperature drops from 65 ° C to 55 ° C, down 10 ° C, the compressor energy efficiency ratio increased from 3.87 to 4.83, an increase of 24%; the condensation temperature dropped to 45 ° C, decreased by 20 ° C, the compressor The energy efficiency ratio increased from 3.87 to 6.12, an increase of 58%. At the same time, the "supercooling" degree of the refrigerant liquid at the end of the condenser is increased, thereby improving the evaporation endothermic capacity and the dehumidifying ability of the evaporator, and specific verification can also be obtained. The calculation results show that for every 1 °C increase in the degree of subcooling of the refrigerant R134a in the condenser, the average increase rate of the refrigerant per unit mass of the refrigerant is about 0.8% (calculated the degree of subcooling range of 1 to 50 ° C); The average increase rate of the refrigeration capacity per unit mass of refrigerant caused by the increase in the degree of subcooling of the refrigerant R22 in the condenser is about 1%.

As described above, the heat pump dry wardrobe provided by the present invention has a low condensing pressure and a deep subcooling depth dehumidification characteristic, and basically solves the problem that the evaporation pressure and the evaporation temperature of the conventional heat pump dryer are continuously pushed up in the slowdown drying stage, which in turn further pushes up the condensation. The pressure and condensation temperature cause the power consumption of the compressor to increase, the pressure difference increases, the compression ratio increases, the energy efficiency ratio decreases, the working conditions deteriorate seriously, and even the compressor burns out.

Embodiment 2

The invention also provides a heat pump dry closet disposed on the side of the dehumidification system, comprising a drying room 1 and a equipment room 2 disposed on the side of the drying room 1. The equipment room 2 is provided with a cooling and dehumidifying device, wherein the specific structure of the cooling and dehumidifying device The cooling and dehumidifying device described in the first embodiment can be used, and can also be designed according to specific conditions, and is not limited herein. Between the drying room 1 and the upper and lower ends of the equipment room 2, there is an air inlet 3 between the equipment and an air outlet 4 between the equipment. The air inlet 3 can be located at the upper end, the air outlet 4 is at the lower end, or the air outlet 4 is located at the upper end and the air inlet. 3 is located at the end, there is no limit here. The following is an example in which the air inlet 3 is located at the upper end and the air outlet 4 is located at the lower end. A closed air circulation is formed between the drying room 2 and the equipment room 2; wherein the air inlet 3 is provided with a filter screen for preventing the inside of the drying room. The wire chips enter the equipment room and adhere to the air inlet of the evaporator condenser, which affects the normal operation of the refrigeration and dehumidification system.

The humid air in the drying room 2 enters the equipment room 2 from the air inlet 3, and the dry air is obtained through the cooling and dehumidifying device, and then sent to the drying room 1 through the air outlet 4, thereby forming a high-level suction and low-level exhaust. Air supply mode; thus making the head space of the dry room 1 a buffer zone containing dry air after drying, air circulation The area is larger than the air circulation cross-sectional area of the central part of the suspended wet clothes. The dry air passes through the wet clothes and enters the head space, and then the speed is greatly reduced, and the wire scraped by the air naturally separates and settles.

The heat pump dry closet disposed on the side of the dehumidification system is further provided with a wind bag 8 at the bottom of the drying room 1, and the wind bag 8 is connected with the air outlet 3 and the drying room 1, and is cooled by the cooling and dehumidifying device, and then heated and heated to become dry. The air is discharged from the air outlet 4 of the equipment room 2 and then sent to the wind pack 8. The air bag 8 is provided with a plurality of through holes, and the dry air from the air outlet 4 passes through the wind bag 8 and enters the drying room 1 through the through hole 801; wherein, from the side closer to the device room 2 to the other side through hole 801 The diameter gradually decreases, and the dry air sprayed from the air outlet 4 enters the wind pack 8 and the dynamic pressure head is converted into a static pressure head, and the wind pack 8 forms a positive pressure zone, and the dry air in the positive pressure zone can be uniformly passed through the through holes 801 having different diameters. Enter the drying room 1, and effectively exchange heat with damp clothes, leaving no dead angle, and the drying effect is better.

In summary, the present invention provides a deep dehumidification device laterally disposed heat pump dry closet, including a drying room and a cooling and dehumidifying device; the present invention places the cooling and drying system on the side of the drying room; the air inlet of the drying room is the air outlet of the device. A wind bag is arranged at the place to allow dry air to uniformly enter the drying room through the through holes in the wind bag. The refrigeration dehumidification device comprises a first condenser, a second condenser, a third condenser and an evaporator. The humid air is divided into two paths, one through the first condenser and the second condenser to obtain high temperature dry air, and the other flow through the evaporation. And the third condenser obtains dry air, and the two channels of dry air are mixed and input into the drying chamber; the cooling and dehumidifying device solves the evaporation pressure and the evaporation temperature of the conventional heat pump dryer in the slowing down drying stage, and the pushing temperature is pushed up. The condensing pressure and the condensing temperature cause the power consumption of the compressor to increase, the pressure difference increases, the compression ratio increases, the energy efficiency ratio decreases, the working condition is seriously deteriorated, and the compressor is burned.

It will be appreciated by those skilled in the art that the present invention may be embodied in many other specific forms without departing from the spirit or scope of the invention. While the embodiments of the present invention have been described, it is understood that the invention is not limited to the embodiments, and the modifications and modifications may be made within the spirit and scope of the invention as defined by the appended claims.

Claims

A deep dehumidification device laterally arranging a heat pump dry closet, comprising: a drying room and a equipment room, wherein the equipment room is provided with a cooling and dehumidifying device, and an air inlet is respectively arranged between the drying room and the device Forming a closed circuit air circulation between the drying chamber and the equipment; and the cooling and dehumidifying device comprises a first condenser, a second condenser, a third condenser, a throttle valve, and an evaporator , fans and compressors;

The first condenser is disposed side by side with the second condenser, the evaporator is disposed side by side with the third condenser, and the fan is disposed at a lower side of the evaporator and the third condenser; The first condenser and the second condenser are connected in series or in parallel with the refrigeration line, and then connected in series with the refrigeration line of the third condenser; the first condenser, the second condenser, the third condenser, and the section The flow valve is connected to a pipe in the evaporator and forms a circulation passage with the compressor for the refrigerant to flow through;

The humid air in the drying chamber is divided into two paths after entering the equipment room from the air inlet, and a humid air is sequentially heated through the first condenser and the second condenser to obtain high temperature dry air. The other wet air is sequentially passed through the evaporator to cool down and dehumidify, and the third condenser is heated and heated to obtain dry air; the high-temperature dry air and the dry air are mixed and sucked by the fan, and then discharged into the drying chamber from the fan outlet. .
The deep dehumidification apparatus according to claim 1, wherein the equipment room is disposed at a side of the drying room, and the air inlet and the air outlet are disposed between the devices. The upper and lower ends of the drying chamber.
The deep dehumidification apparatus according to claim 1 or 2, wherein the first condenser, the second condenser, the third condenser and the evaporator constitute an entire condensing evaporation module, The condensing evaporation module is inclined, and two independent wedge-shaped passages are formed between the two sides of the condensing evaporation module and the two sides between the devices.
The deep dehumidification apparatus of claim 3, wherein the first condenser and the second condenser are arranged side by side to form an upper condensing evaporation module, and the first condenser and the first condenser are The second condenser is spaced apart from left to right; the third condenser and the evaporator are arranged side by side to form a lower condensing evaporation module, and the third condenser and the evaporator are spaced apart from each other.
The deep dehumidification apparatus of claim 4, wherein the upper condensing evaporation module and the lower condensing evaporation module are separated by a partition between the upper and lower sides.
The deep dehumidification apparatus according to claim 1 or 2, wherein the bottom of the evaporator is provided with a water collecting tray.
The deep dehumidification device of claim 2, wherein the bottom of the drying room is provided with a wind bag, the air outlet is connected to the wind bag; and the wind bag is arranged There are a plurality of through holes, and the dry air from the air outlet passes through the air bag and enters the drying room through the through holes.
The deep dehumidification apparatus according to claim 7, wherein the diameter of the through hole is gradually decreased from the side closer to the apparatus to the other side.
A deep dehumidification device laterally arranging a heat pump dry closet, comprising: a drying room and a device disposed on a side of the drying room, wherein the equipment room is provided with a cooling and dehumidifying device, and the drying room and the device are An air inlet and an air outlet are disposed; an air inlet between the equipment and an air outlet between the equipment are respectively disposed at an upper end and a lower end of the drying room, or between an air inlet of the equipment and the equipment Air outlets are respectively disposed at a lower end and an upper end of the drying chamber;

Forming a closed circuit air circulation between the drying room and the equipment, humid air in the drying room enters the equipment room from the air inlet, and obtains dry air after the cooling and dehumidifying device; The air inlet is provided with a wind bag communicating with the air outlet of the drying room and the device, and the dry air in the equipment room enters the wind bag through the air outlet, and the dry air passes through the wind bag. The package is evenly distributed into the drying chamber.
The deep dehumidification apparatus of claim 9, wherein the wind bag is provided with a plurality of through holes, and the dry air from the air outlet passes through the wind bag, A through hole enters the drying chamber.
The deep dehumidification apparatus according to claim 10, wherein the wind pack is gradually reduced in diameter from the side closer to the apparatus to the other side.
The deep dehumidification apparatus according to claim 9, wherein the filter is disposed on the air inlet of the device.