CN104121676B - Fresh air handling unit and temperature and humidity adjusting method - Google Patents

Fresh air handling unit and temperature and humidity adjusting method Download PDF

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Publication number
CN104121676B
CN104121676B CN201410386553.5A CN201410386553A CN104121676B CN 104121676 B CN104121676 B CN 104121676B CN 201410386553 A CN201410386553 A CN 201410386553A CN 104121676 B CN104121676 B CN 104121676B
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air
air outlet
cavity
heat exchanger
compressor
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CN104121676A (en
Inventor
杜辉
刘煜
詹朝永
梁思静
苏炳珲
李博
刘莹
符美军
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Abstract

The invention relates to a fresh air handling unit and a temperature and humidity adjusting method, wherein the fresh air handling unit comprises a compressor, a heat exchanger, at least two cavities and at least one reversing assembly, the heat exchanger is arranged in the cavities, an air inlet and an air outlet are formed in the cavities, and the reversing assembly is used for controlling air in the cavities to blow indoors or outdoors. The indoor temperature and humidity can be adjusted simultaneously to meet the requirements of adjusting the indoor temperature and humidity under different conditions.

Description

Fresh air handling unit and temperature and humidity adjusting method
Technical Field
The invention relates to the field of indoor air conditioning and ventilation, in particular to a fresh air handling unit and a temperature and humidity adjusting method.
Background
At present, more and more attention is paid to energy conservation and heat preservation in the aspect of house building, but the air circulation is prevented while the heat insulation, heat preservation and sealing performances are achieved, turbid harmful gas is generated in a gathering mode in a sealed heat preservation space, so that the oxygen content in the air is reduced, and the health of people is influenced. In order to solve the problem of air pollution, the conventional method is to open a window for ventilation, but the opening of the window for ventilation can cause the loss of indoor cold and heat energy, destroy the whole heat insulation system of the building and cause outdoor dust and noise to enter the room.
The fresh air system can carry out indoor and outdoor air replacement under the condition that indoor door and window close keeps warm, but, most of fresh air systems on the existing market are large in size and complex in structure, are generally suitable for industrial application, and are not suitable for entering ordinary families.
Moreover, most of the existing fresh air systems can only adjust the temperature independently, but cannot adjust the temperature and the humidity simultaneously.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a fresh air handling unit and a temperature and humidity adjusting method, which can adjust temperature and humidity simultaneously in a simple manner.
In order to achieve the purpose, the invention provides a fresh air handling unit which comprises a compressor, a heat exchanger, at least two cavities and at least one reversing assembly, wherein the heat exchanger is arranged in the cavities, an air inlet and an air outlet are formed in the cavities, and the reversing assembly is used for controlling air in the cavities to blow indoors or outdoors.
In a preferred or optional embodiment, in the cooling and dehumidifying mode, the reversing assembly enables an air outlet of the cavity generating cold air to be communicated with the indoor space; in the heating mode, the reversing assembly enables an air outlet of the cavity which generates hot air to be communicated with the indoor space; under the dehumidification mode, the switching-over subassembly makes the air outlet that produces cold wind the cavity with produce hot-blast the air outlet of cavity communicate with indoor simultaneously.
In a preferred or optional embodiment, the fresh air handling unit is of an integral structure arranged outdoors.
In a preferred or optional embodiment, the reversing assembly is arranged in the cavity and/or in an air supply pipe connected with an air outlet of the cavity.
In a preferred or optional embodiment, at least two air outlets are arranged on at least one cavity, at least one air outlet is communicated with the indoor space, one air outlet is communicated with the outdoor space, and the reversing assembly controls the opening and closing of the air outlets.
In a preferred or optional embodiment, the reversing assembly comprises two cavities, namely a first cavity and a second cavity;
the first cavity is provided with a first air outlet and a first air inlet,
the second cavity is provided with a second air outlet, a third air outlet and a second air inlet,
the first reversing component is used for controlling the second air outlet and the third air outlet to be opened and closed;
the first air outlet and the second air outlet are both connected with an air supply pipe communicated into a room.
In a preferred or optional embodiment, the reversing assembly further includes a reversing valve, and in the dehumidification and cooling mode, the first reversing assembly closes the second air outlet and opens the third air outlet, and the reversing valve controls the refrigerant in the compressor to sequentially pass through the heat exchanger in the second cavity and the heat exchanger in the first cavity and then return to the compressor.
In a preferred or optional embodiment, the reversing assembly further includes a reversing valve, and in a dehumidification mode, the first reversing assembly closes the third air outlet and opens the second air outlet, and the reversing valve controls the refrigerant in the compressor to sequentially pass through the heat exchanger in the second cavity and the heat exchanger in the first cavity and then return to the compressor.
In a preferred or optional embodiment, the reversing assembly further includes a reversing valve, and in a heating mode, the first reversing assembly closes the second air outlet and opens the third air outlet, and the reversing valve controls the refrigerant in the compressor to sequentially return to the compressor through the heat exchanger in the first cavity and the heat exchanger in the second cavity.
In a preferred or optional embodiment, the reversing assembly further comprises a second reversing assembly, the first cavity is further provided with a fourth air outlet, and the second reversing assembly is used for controlling the opening and closing of the first air outlet and the fourth air outlet.
In a preferred or optional embodiment, in the dehumidification cooling mode, the second reversing component closes the fourth air outlet and opens the first air outlet, the first reversing component closes the second air outlet and opens the third air outlet, and the refrigerant in the compressor returns to the compressor after sequentially passing through the heat exchanger in the second cavity and the heat exchanger in the first cavity.
In a preferred or optional embodiment, in a dehumidification mode, the second reversing component closes the fourth air outlet and opens the first air outlet, the first reversing component closes the third air outlet and opens the second air outlet, and the refrigerant in the compressor sequentially passes through the heat exchanger in the second cavity and the heat exchanger in the first cavity and returns to the compressor.
In a preferred or optional embodiment, in a heating mode, the second reversing component closes the first air outlet and opens the fourth air outlet, the first reversing component closes the third air outlet and opens the second air outlet, and the refrigerant in the compressor sequentially passes through the heat exchanger in the second cavity and the heat exchanger in the first cavity and returns to the compressor.
In a preferred or optional embodiment, the reversing component is a position conversion door for controlling the opening and closing of the air outlet.
In a preferred or alternative embodiment, the position conversion door is a rotary door or a sliding door.
In a preferred or optional embodiment, a fan is further arranged in the cavity.
In order to achieve the above object, the present invention further provides a temperature and humidity adjusting method for a fresh air handling unit, where the fresh air handling unit includes a compressor, a heat exchanger, a reversing component, and at least two cavities, and the temperature and humidity adjusting method includes:
in a cooling and dehumidifying mode, an air outlet of the cavity generating cold air is communicated with the indoor space through the reversing assembly, and the cold air is fed into the indoor space, so that the purposes of dehumidification and cooling are achieved;
in the heating mode, an air outlet of the cavity for generating hot air is communicated with the indoor space through the reversing assembly, and the hot air is fed into the indoor space to achieve the purpose of heating;
under the dehumidification mode, the air outlet of the cavity for generating cold air and the air outlet of the cavity for generating hot air are simultaneously communicated with the indoor space through the reversing assembly, the cold air quantity and the hot air quantity sent into the indoor space are equivalent, and the purposes of keeping the indoor temperature and dehumidifying are achieved.
Based on the technical scheme, the invention at least has the following beneficial effects:
the indoor air conditioner has the advantages that the heat exchanger is used for refrigerating, dehumidifying and heating, the reversing assembly is used for controlling cold air or/and hot air entering the room, when the cold air enters the room, the indoor air conditioner is used for cooling and dehumidifying the room, when the hot air enters the room, the indoor air conditioner is used for heating the room, and when the cold air and the hot air enter the room, the indoor temperature is kept unchanged and the dehumidification effect is achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic structural diagram of a fresh air handling unit according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a fresh air handling unit according to a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of the embodiment shown in FIG. 1 in a dehumidification cooling mode;
FIG. 4 is a schematic structural diagram of the embodiment shown in FIG. 1 in a dehumidification mode;
FIG. 5 is a schematic diagram of the embodiment of FIG. 1 in a heating mode;
FIG. 6 is a schematic structural diagram of the embodiment shown in FIG. 2 in a dehumidification cooling mode;
FIG. 7 is a schematic structural diagram of the embodiment shown in FIG. 2 in a dehumidification mode;
fig. 8 is a schematic structural view of the embodiment shown in fig. 2 in a heating mode.
In the drawings:
an A/B-heat exchanger; c-a throttle valve; a D-compressor; e-a reversing valve; K1/K2-commutating component;
1-a first cavity; 11-a first air outlet; 12-a first air inlet; 13-a fourth air outlet; 14-a first heat exchanger; k2 — a second reversing component;
2-a second cavity; 21-a second air outlet; 22-a third air outlet; 23-a second air inlet; 24-a second heat exchanger; k1 — a first reversing component;
and 3, an air supply pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
The principles used in the present invention will first be explained.
The refrigeration principle is as follows: the compressor compresses working medium from low-temperature low-pressure gas into high-temperature high-pressure gas, the high-temperature high-pressure gas passes through the condenser and is condensed into low-temperature high-pressure liquid in the condenser, and the low-temperature high-pressure liquid is throttled by the throttle valve and becomes low-temperature low-pressure liquid. The low-temperature low-pressure liquid working medium is sent to the evaporator, absorbs heat in the evaporator and evaporates to become steam with lower pressure, thereby completing the refrigeration cycle.
The dehumidification principle is as follows: dew point dehumidification is carried out by reducing the temperature of air, and the dew point dehumidification means that the temperature of the air is reduced to be lower than the dew point temperature corresponding to the air temperature and humidity so as to achieve the aim of dehumidification. One of the heat exchangers is in a refrigeration state, the temperature of fresh air passing through the heat exchanger is reduced, and when the temperature is reduced to be below the dew point temperature corresponding to the air temperature and humidity, water vapor is separated out, condensed water appears, and the condensed water is removed to achieve the purpose of dehumidification.
As shown in fig. 1 and 2, the fresh air handling unit provided by the invention comprises a heat exchanger a/B and a compressor D, and further comprises at least two cavities; the heat exchanger A/B is arranged in the cavity, an air inlet and an air outlet are formed in the cavity, the heat exchanger further comprises at least one reversing assembly K1/K2, and the reversing assembly K1/K2 is used for controlling air in the cavity to blow to the indoor or outdoor through the air outlet. In the cooling and dehumidifying mode, the reversing component K1/K2 enables an air outlet of the cavity generating cold air to be communicated with the indoor space; in the heating mode, the reversing component K1/K2 enables the air outlet of the cavity generating hot air to be communicated with the indoor space, and in the dehumidification mode, the reversing component K1/K2 enables the air outlet of the cavity generating cold air and the air outlet of the cavity generating hot air to be communicated with the indoor space simultaneously.
The reversing component K1/K2 can not only control the air in the cavity to be sent to the indoor or blown to the outdoor, but also control the air quantity sent to the indoor or blown to the outdoor.
The temperature and humidity adjusting method of the fresh air handling unit provided by the invention comprises the following steps: the reversing component K1/K2 controls the air in the cavity to be sent into the room or blown out of the room, and air outlets of different cavities can be enabled to be sent to the indoor air quantity to be matched, so that the indoor temperature and humidity can be adjusted simultaneously, and the requirements for adjusting the indoor temperature and humidity of air under different conditions can be met.
The temperature and humidity adjusting method of the fresh air handling unit provided by the invention specifically comprises the following three modes:
in a cooling and dehumidifying mode, an air outlet of a cavity for generating cold air is communicated with the interior of the room through a reversing assembly, so that the amount of the cold air sent to the interior of the room is larger than that of the hot air, and the purposes of cooling and dehumidifying are achieved;
in the heating mode, an air outlet of the cavity for generating hot air is communicated with the indoor space through the reversing assembly, so that the amount of the hot air sent to the indoor space is larger than that of the cold air, and the purpose of temperature rise is achieved;
in a dehumidification mode, the air outlet of the cavity for generating cold air and the air outlet of the cavity for generating hot air are simultaneously communicated with the indoor space through the reversing assembly, so that the amount of the hot air and the amount of the cold air fed into the indoor space are equivalent, and the purposes of keeping the indoor temperature and dehumidifying are achieved.
The fresh air handling unit provided by the invention can be of an integral structure, and specifically can be as follows: each cavity sets up in same casing, and simple structure is compact, and whole fresh air unit can install outdoors, and simple to operate can the noise reduction to the wind that gets into the cavity through the air intake all is the new trend, and then sends indoor wind also all to be the new trend through the air outlet, can improve indoor oxygen content, is convenient for replace indoor dirty gas.
In the exemplary embodiment of the fresh air handling unit provided by the invention, the reversing component K1/K2 may be disposed in the cavity, and/or disposed in an air supply pipe connected with an air outlet of the cavity, and the air supply pipe may be led to the indoor or outdoor. At least one cavity can be provided with at least two air outlets, at least one air outlet is communicated with the indoor space, one air outlet is communicated with the outdoor space, and the reversing component K1/K2 is used for controlling the opening and closing of the air outlets.
Through the reversing component K1/K2, the air outlet can be in a fully open state or a fully closed state or a half open and half closed state, so that the aim of controlling the air output of the air outlet is fulfilled.
In the exemplary embodiment of the fresh air handling unit provided by the present invention, the reversing component K1/K2 may be a position changing door, a louver or other components capable of controlling the opening and closing of the air outlet and the opening and closing amount. The position conversion door may take the form of a rotating door or a sliding door. The position conversion door can be driven by a motor when rotating, and the motor can be arranged on a rotating shaft of the position conversion door; the position conversion door can also be driven to rotate through gear or belt transmission. When the position conversion door moves in parallel, the position conversion door can also be driven by a gear rack.
In the exemplary embodiment of the fresh air handling unit provided by the invention, a fan may be disposed in each cavity.
The following description will be made in detail by taking a first embodiment and a second embodiment of a fresh air handling unit according to the present invention as an example.
Fig. 1 shows a first embodiment of a fresh air handling unit according to the present invention, and fig. 3 to 5 show schematic diagrams of the first embodiment shown in fig. 1 in a cooling and dehumidifying mode, a dehumidifying mode and a heating mode, respectively.
As shown in fig. 3, in the first embodiment, the fresh air handling unit includes a first cavity 1 and a second cavity 2;
a first air outlet 11 and a first air inlet 12 are arranged on the first cavity 1, and a heat exchanger arranged in the first cavity 1 is a first heat exchanger 14;
a second air outlet 21, a third air outlet 22 and a second air inlet 23 are arranged on the second cavity 2, and the heat exchanger arranged in the second cavity 2 is a second heat exchanger 24;
the air conditioner further comprises a reversing assembly which is a first reversing assembly K1, and the first reversing assembly K1 is used for controlling the opening and closing of the second air outlet 21 and the third air outlet 22. For example: the first reversing component K1 may be configured to close the second air outlet 21 and open the third air outlet 22, or close the third air outlet 22 and open the second air outlet 21;
the first air outlet 11 and the second air outlet 21 are both connected with the blast pipe 3 which is led into the room, and the third air outlet 22 is led out of the room.
In the first embodiment, the first cavity 1 may further be provided with a first fan, and the second cavity 2 may further be provided with a second fan.
The first heat exchanger 14 and the second heat exchanger 24 are communicated through a connecting pipeline, a throttle valve C is arranged on the connecting pipeline, the first heat exchanger 14 and the second heat exchanger 24 are respectively connected with a first working port and a second working port of a reversing valve E, and a third working port and a fourth working port of the reversing valve E are both connected with a compressor D.
The fresh air handling unit provided in this embodiment mainly carries out temperature, humidity control through switching-over valve E and switching-over subassembly, and it has dehumidification cooling mode, dehumidification mode and the mode of heating at least.
As shown in fig. 3, in the dehumidification and cooling mode, the first heat exchanger 14 is an evaporator, the second heat exchanger 24 is a condenser, the first reversing component K1 closes the second air outlet 21, opens the third air outlet 22, and the refrigerant comes out of the compressor D, enters the second heat exchanger 24 first under the action of the reversing valve E, then enters the first heat exchanger 14 after being throttled by the throttle valve C, and finally returns to the compressor D through the reversing valve E; in the process, the fresh air acted by the second heat exchanger 24 is hot air and is blown to the outside through the third air outlet 22; the fresh air after the action of the first heat exchanger 14 is cold air, is cooled by the first heat exchanger 14, is dehumidified and cooled, enters the air supply pipe 3 through the first air outlet 11, and is finally supplied to the indoor. The dehumidification cooling mode is suitable for summer.
As shown in fig. 4, in the dehumidification mode, the first heat exchanger 14 is an evaporator, the second heat exchanger 24 is a condenser, the first reversing component K1 closes the third air outlet 22, opens the second air outlet 21, and the refrigerant comes out of the compressor D, and under the action of the reversing valve E, enters the second heat exchanger 24 first, then enters the first heat exchanger 14 after being throttled by the throttle valve C, and finally returns to the compressor D after passing through the reversing valve E; in the process, the fresh air acted by the second heat exchanger 24 is hot air, and the hot air enters the blast pipe 3 through the second air outlet 21; the fresh air acted by the first heat exchanger 14 is cold air, the dehumidification effect is achieved after the fresh air is acted by the first heat exchanger 14, and the cold air enters the air supply pipe 3 through the first air outlet 11; the cold air and the hot air are mixed in the blast pipe 3, the temperature is balanced, and finally the mixture is sent to the indoor through the blast pipe 3.
In the dehumidification mode, the air passing through the first heat exchanger 14 is dehumidified and cooled, the air passing through the second heat exchanger 24 is not dehumidified, half of the air fed into the room is dehumidified, the temperatures of cold air and hot air are balanced, neither temperature rise nor temperature reduction is performed, and only dehumidification is performed.
As shown in fig. 5, in the heating mode, the first heat exchanger 14 is a condenser, the second heat exchanger 24 is an evaporator, the first reversing component K1 closes the second air outlet 21, opens the third air outlet 22, and the refrigerant comes out of the compressor D, and under the action of the reversing valve E, enters the first heat exchanger 14, then enters the second heat exchanger 24 after being throttled by the throttle valve C, and finally returns to the compressor D through the reversing valve E; in the process, the fresh air acted by the first heat exchanger 14 is hot air, enters the blast pipe 3 through the first air outlet 11 and is finally blown to the indoor; the fresh air after passing through the second heat exchanger 24 is cold air, and the cold air is blown to the outside through the third air outlet 22. The heating mode is applicable to winter.
In the first embodiment, the reversing valve E may be a four-way valve, which is a commonly used component of a refrigeration system, and may be a solenoid valve that is energized to realize a flow direction of a refrigerant.
Fig. 2 shows a second embodiment of the fresh air handling unit according to the present invention, and fig. 6 to 8 show schematic diagrams of the second embodiment shown in fig. 2 in a cooling and dehumidifying mode, a dehumidifying mode and a heating mode, respectively.
As shown in fig. 6, in the second embodiment, the fresh air handling unit includes a first cavity 1 and a second cavity 2;
a first air outlet 11, a fourth air outlet 13 and a first air inlet 12 are arranged on the first cavity 1, and a heat exchanger arranged in the first cavity 1 is a first heat exchanger 14;
a second air outlet 21, a third air outlet 22 and a second air inlet 23 are arranged on the second cavity 2, and the heat exchanger arranged in the second cavity 2 is a second heat exchanger 24;
the device also comprises two reversing assemblies which are respectively a first reversing assembly K1 and a second reversing assembly K2
The second reversing component K2 is used for controlling the opening and closing of the first air outlet 11 and the fourth air outlet 13.
The first reversing component K1 is used for controlling the opening and closing of the second air outlet 21 and the third air outlet 22.
The first air outlet 11 and the second air outlet 21 are both connected with the blast pipe 3 which is led into the room, and the third air outlet 22 and the fourth air outlet 13 are led out of the room.
In the second embodiment, the first cavity 1 may further be provided with a first fan, and the second cavity 2 may further be provided with a second fan.
The first heat exchanger 14 and the second heat exchanger 24 are communicated through a connecting pipeline, a throttle valve C is arranged on the connecting pipeline, and the first heat exchanger 14 and the second heat exchanger 24 are both connected with a compressor D.
In the second embodiment, the first reversing component K1 may close the second air outlet 21 and open the third air outlet 22, or close the third air outlet 22 and open the second air outlet 21. The second reversing component K2 can close the first air outlet 11 and open the fourth air outlet 13, or close the fourth air outlet 13 and open the first air outlet 11.
The fresh air handling unit provided in this embodiment mainly carries out dehumidification and temperature regulation through first switching-over subassembly K1 and second switching-over subassembly K2, and it has dehumidification cooling mode, dehumidification mode and heating mode at least.
As shown in fig. 6, in the dehumidification and cooling mode, the first heat exchanger 14 is an evaporator, the second heat exchanger 24 is a condenser, the second reversing component K2 closes the fourth air outlet 13, opens the first air outlet 11, the first reversing component K1 closes the second air outlet 21, opens the third air outlet 22, and the refrigerant comes out of the compressor D, enters the second heat exchanger 24, then enters the first heat exchanger 14 after being throttled by the throttle valve C, and finally returns to the compressor D. In the process, the fresh air acted by the second heat exchanger 24 is hot air and is blown to the outside through the third air outlet 22; the fresh air after the action of the first heat exchanger 14 is cold air, the humidity in the air is removed after the fresh air passes through the first heat exchanger 14, the temperature is reduced, and the cooled and dehumidified fresh air enters the air supply pipe 3 through the first air outlet 11 and is finally supplied to the indoor. The dehumidification cooling mode is suitable for summer.
As shown in fig. 7, in the dehumidification mode, the first heat exchanger 14 is an evaporator, the second heat exchanger 24 is a condenser, the second reversing component K2 closes the fourth air outlet 13, opens the first air outlet 11, the first reversing component K1 closes the third air outlet 22, opens the second air outlet 21, and the refrigerant comes out of the compressor D, enters the second heat exchanger 24, then enters the first heat exchanger 14 after being throttled by the throttle valve C, and finally returns to the compressor D. In the process, the fresh air acted by the second heat exchanger 24 is hot air and enters the blast pipe 3 through the second air outlet 21; the fresh air after the action of the first heat exchanger 14 is cold air, the humidity in the air is removed after the fresh air passes through the first heat exchanger 14, the temperature is reduced, the cooled and dehumidified fresh air enters the air supply pipe 3 through the first air outlet 11, the cold air and the hot air are mixed in the air supply pipe 3, the temperature is balanced, and finally the air is supplied to the indoor through the air supply pipe 3.
In the dehumidification mode, the air passing through the first heat exchanger 14 is dehumidified, the air passing through the second heat exchanger 24 is not dehumidified, half of the air fed into the room is dehumidified, the temperatures of the cold air and the hot air are balanced, neither temperature rise nor temperature drop is performed, and only dehumidification is performed.
As shown in fig. 8, in the heating mode, the first heat exchanger 14 is an evaporator, the second heat exchanger 24 is a condenser, the second reversing component K2 closes the first air outlet 11, opens the fourth air outlet 13, the first reversing component K1 closes the third air outlet 22, opens the second air outlet 21, and the refrigerant comes out of the compressor D, enters the second heat exchanger 24, then enters the first heat exchanger 14 after being throttled by the throttle valve C, and finally returns to the compressor D. In the process, the fresh air acted by the second heat exchanger 24 is hot air, enters the blast pipe 3 through the second air outlet 21 and is finally sent to the indoor; the fresh air after the action of the first heat exchanger 14 is cold air, and the cold air is blown to the outside through the fourth air outlet 13. The heating mode is applicable to winter.
In the first and second embodiments, the first reversing component K1 and the second reversing component K2 can both completely open the air outlet or completely close the air outlet, or make the air outlet have a certain opening and closing amount, and be in a half-open and half-closed state.
In the first and second embodiments, the refrigerant state changes such that the compressor D compresses the high-temperature and high-pressure gas; after the condensation of the condenser, the liquid with medium temperature and high pressure; after throttling by the throttle valve, low-temperature and low-pressure two-phase flow flows; after the evaporator evaporates, the gas is low-temperature and low-pressure.
In the first and second embodiments, a common R22 refrigerant can be used, the temperature is generally 70-90 ℃, and after condensation, the temperature is about 40 ℃.
The fresh air handling unit provided by the invention can dehumidify and cool when the temperature and the humidity are high in summer; when the temperature is proper in spring and autumn but the humidity is high, dehumidification can be carried out without cooling; the temperature is lower in winter, and when humidity was suitable, can carry out the intensification processing, consequently, can satisfy the indoor temperature and the humidity's of the air regulation demand under the different situation, and its structure is integral, and simple structure is compact, is particularly useful for ordinary family.
In the description of the present invention, it should be understood that the terms "first", "second", "third", "fourth", etc. are used to define parts or portions, and are used only for the convenience of distinguishing the parts or portions, and if not otherwise stated, the terms have no special meaning, and thus, should not be construed as limiting the scope of the present invention.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.

Claims (14)

1. The utility model provides a fresh air handling unit, includes compressor, heat exchanger and two at least cavitys, the heat exchanger sets up in the cavity, be provided with air intake and air outlet on the cavity, its characterized in that: the fresh air unit is of an integral structure arranged outdoors, the air entering the cavity through the air inlet is fresh air, and the reversing assembly is arranged in the cavity and/or arranged in an air supply pipe connected with an air outlet of the cavity; in a cooling and dehumidifying mode, the reversing assembly enables an air outlet of the cavity which generates cold air to be communicated with the indoor space; in the heating mode, the reversing assembly enables an air outlet of the cavity which generates hot air to be communicated with the indoor space; under the dehumidification mode, the switching-over subassembly makes the air outlet that produces cold wind the cavity with produce hot-blast the air outlet of cavity communicate with indoor simultaneously.
2. The fresh air handling unit of claim 1 wherein: at least one cavity is provided with at least two air outlets, at least one air outlet leads to indoors, one air outlet leads to outdoors, the switching-over subassembly control the opening and shutting of air outlet.
3. The fresh air handling unit of any of claims 1-2 wherein: the device comprises two cavities, namely a first cavity and a second cavity;
the first cavity is provided with a first air outlet and a first air inlet,
the second cavity is provided with a second air outlet, a third air outlet and a second air inlet,
the first reversing component is used for controlling the second air outlet and the third air outlet to be opened and closed;
the first air outlet and the second air outlet are both connected with an air supply pipe communicated into a room.
4. The fresh air handling unit of claim 3 wherein: the air conditioner further comprises a reversing valve, and in a dehumidification cooling mode, the first reversing assembly closes the second air outlet and opens the third air outlet, and the reversing valve controls the refrigerant in the compressor to sequentially pass through the heat exchanger in the second cavity and the heat exchanger in the first cavity and then return to the compressor.
5. The fresh air handling unit of claim 3 wherein: the first reversing assembly closes the third air outlet and opens the second air outlet in a dehumidification mode, and the reversing valve controls the refrigerant in the compressor to sequentially pass through the heat exchanger in the second cavity and the heat exchanger in the first cavity and then return to the compressor.
6. The fresh air handling unit of claim 3 wherein: the air conditioner further comprises a reversing valve, in a heating mode, the first reversing assembly closes the second air outlet and opens the third air outlet, and the reversing valve controls the refrigerant in the compressor to sequentially pass through the heat exchanger in the first cavity and the heat exchanger in the second cavity and return to the compressor.
7. The fresh air handling unit of claim 3 wherein: the air conditioner further comprises a second reversing assembly, a fourth air outlet is further formed in the first cavity, and the second reversing assembly is used for controlling the opening and closing of the first air outlet and the fourth air outlet.
8. The fresh air handling unit of claim 7 wherein: and in a dehumidification cooling mode, the second reversing assembly closes the fourth air outlet and opens the first air outlet, the first reversing assembly closes the second air outlet and opens the third air outlet, and the refrigerant in the compressor returns to the compressor after sequentially passing through the heat exchanger in the second cavity and the heat exchanger in the first cavity.
9. The fresh air handling unit of claim 7 wherein: in a dehumidification mode, the second reversing assembly closes the fourth air outlet and opens the first air outlet, the first reversing assembly closes the third air outlet and opens the second air outlet, and the refrigerant in the compressor sequentially passes through the heat exchanger in the second cavity and the heat exchanger in the first cavity and returns to the compressor.
10. The fresh air handling unit of claim 7 wherein: in a heating mode, the second reversing assembly closes the first air outlet and opens the fourth air outlet, the first reversing assembly closes the third air outlet and opens the second air outlet, and a refrigerant in the compressor sequentially passes through the heat exchanger in the second cavity and the heat exchanger in the first cavity and returns to the compressor.
11. The fresh air handling unit of any of claims 1-2 wherein: the reversing component is a position conversion door for controlling the opening and closing of the air outlet.
12. The fresh air handling unit of claim 11 wherein: the position conversion door is a rotating door or a sliding door.
13. The fresh air handling unit of any of claims 1-2 wherein: a fan is further arranged in the cavity.
14. The fresh air handling unit temperature and humidity adjusting method based on claim 1, characterized by comprising the following steps: the fresh air handling unit comprises a compressor, a heat exchanger, a reversing assembly and at least two cavities, and the temperature and humidity adjusting method comprises the following steps:
in a cooling and dehumidifying mode, an air outlet of the cavity generating cold air is communicated with the indoor space through the reversing assembly, and the cold air is fed into the indoor space, so that the purposes of dehumidification and cooling are achieved;
in the heating mode, an air outlet of the cavity for generating hot air is communicated with the indoor space through the reversing assembly, and the hot air is fed into the indoor space to achieve the purpose of heating;
under the dehumidification mode, the air outlet of the cavity for generating cold air and the air outlet of the cavity for generating hot air are simultaneously communicated with the indoor space through the reversing assembly, the cold air quantity and the hot air quantity sent into the indoor space are equivalent, and the purposes of keeping the indoor temperature and dehumidifying are achieved.
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CN106016466A (en) * 2016-06-29 2016-10-12 潘国飞 Air conditioner with fresh air
CN111425948A (en) * 2020-04-03 2020-07-17 宁波奥克斯电气股份有限公司 Dehumidification control method and device and air conditioner

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