CN218269311U - Fresh air dehumidification all-in-one machine - Google Patents

Abstract

The utility model discloses a fresh air dehumidification integrated machine, which comprises a heat pump refrigerant system; the air-conditioning system comprises a compressor, a four-way valve, an exhaust heat exchanger, a first air inlet heat exchanger and a second air inlet heat exchanger which are connected together through refrigerant pipelines, wherein the other end of the exhaust heat exchanger is connected with a first refrigerant branch, and the first refrigerant branch is connected with the first air inlet heat exchanger through a first refrigerant auxiliary path respectively; the first air inlet heat exchanger is connected with a first refrigerant auxiliary path, and the output end of the first air inlet heat exchanger is communicated with a first port of a four-way valve through a first refrigerant branch path; the output end of the second air inlet heat exchanger is communicated with the refrigerant main path through a third refrigerant branch; a first expansion valve is arranged on the first refrigerant branch, and a second expansion valve is arranged on the second refrigerant auxiliary path; and the first expansion valve and the second expansion valve are used cooperatively, so that the dehumidification quantity is not attenuated when the dehumidification mode is used for controlling the temperature.

Description

Fresh air dehumidification all-in-one machine

Technical Field

The utility model belongs to the technical field of the air conditioner, specifically speaking relates to a new trend dehumidification all-in-one.

Background

Along with the continuous progress of living standard and quality, people also improve gradually the comfortable degree requirement of indoor environment, when realizing indoor outer circulation of air and heat exchange, furthest's assurance indoor comfort level and energy saving are the research and development focus in current air conditioner field.

The existing dehumidifier rarely has the functions of refrigeration and heating, and the dehumidification without temperature reduction is mostly electric heating temperature rise, so that the energy consumption is high; the total heat exchanger mostly depends on the total heat exchange core body to recover the energy of the fresh air machine, and the energy recovery efficiency is low and the fresh air machine does not have the functions of refrigeration and heating; the air treatment device is poor in user experience, high in energy consumption and large in size, so that the compact air treatment device is designed, the energy consumption is reduced to the greatest extent under different working modes, and the energy is saved.

Application number is 202210465101.0's patent application discloses a new trend dehumidification all-in-one, including total heat exchanger and heat pump refrigerant system, the new trend dehumidification all-in-one that this application relates to compact structure, it is multiple functional, and can carry out a lot of recycle to the heat in refrigerant transportation process, be favorable to the energy saving, but the refrigerant circulation in this refrigerant system is adjusted by first expansion valve and is influenced great, when first expansion valve is closed, the refrigerant circulation volume reduces, the dehumidification volume also can reduce, first expansion valve simultaneous control dehumidification volume and air-out temperature, it is big to adjust the degree of difficulty, the precision is poor, can't realize control and regulatory function to the dehumidification temperature, also can't solve the inconsistent problem of refrigeration/heating in-process refrigerant.

Disclosure of Invention

An object of the utility model is to provide a new trend dehumidification all-in-one to the air conditioner energy consumption that exists among the solution prior art is higher, and energy utilization is lower, and the refrigerant is adjusted limitedly, adjusts the precision poor, can't realize carrying out the adjustment control scheduling problem to the dehumidification temperature.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

the utility model provides a new trend dehumidification all-in-one, it includes:

a total heat exchanger;

a heat pump refrigerant system: the system comprises a compressor, a four-way valve, an exhaust heat exchanger, a first air inlet heat exchanger and a second air inlet heat exchanger which are connected together through a refrigerant pipeline; the four-way valve comprises an input port, a backflow port, a first port and a second port;

the air exhaust heat exchanger is connected with the other end of the air exhaust heat exchanger through a first refrigerant branch, and the first refrigerant branch is connected with the first air inlet heat exchanger through a first refrigerant auxiliary path respectively; the second air inlet heat exchanger is connected with the second refrigerant auxiliary path, and the output end of the first air inlet heat exchanger is communicated with a second port of the four-way valve through a second refrigerant branch; the output end of the second air inlet heat exchanger is communicated with the refrigerant main path through a third refrigerant branch; and a first expansion valve is arranged on the first refrigerant branch, and a second expansion valve is arranged on the second refrigerant auxiliary path.

In some embodiments of the present application, a controller is further included and is electrically connected to the compressor, the four-way valve, the first expansion valve, and the second expansion valve.

In some embodiments of the present application, a filter is connected to both sides of the first expansion valve and the second expansion valve, respectively.

In some embodiments of this application, the total heat exchanger includes the shell body and sets up the heat transfer core in the shell body, be formed with outdoor air intake, outdoor air exit, indoor supply-air outlet and indoor return air inlet on the shell body.

In some embodiments of the present application, a first temperature detection element is disposed on the indoor air supply outlet and used for detecting the air outlet temperature, and the first temperature detection element is connected to the controller.

In some embodiments of the present application, the input end and the output end of the first air intake heat exchanger are further respectively provided with a second temperature detection piece and a third temperature detection piece connected with the controller.

In some embodiments of the present application, an air intake channel is formed between the outdoor air inlet and the indoor air supply outlet for conveying outdoor fresh air, and an air exhaust channel is formed between the indoor air return inlet and the outdoor air outlet for conveying indoor dirty air.

In some embodiments of the present application, the exhaust heat exchanger is disposed in the exhaust passage, and the first intake heat exchanger and the second intake heat exchanger are sequentially formed in the intake passage along a flow direction of an air flow.

In some embodiments of this application, be formed with the installation inner chamber in the shell body, the installation inner chamber include with the outdoor air inlet district of outdoor air intake intercommunication, with the outdoor air discharge district of outdoor air exit intercommunication, with the indoor air supply district of indoor air supply outlet intercommunication and with the indoor return air district of indoor return air inlet intercommunication.

In some embodiments of this application, be provided with air intake fan in the indoor air inlet district for the outdoor new trend of drive is followed indoor supply-air outlet input is indoor, be provided with the fan of airing exhaust in the outdoor air outlet district for the indoor foul air of drive is followed outdoor air outlet output is outdoor.

Compared with the prior art, the utility model discloses an advantage is with positive effect:

according to the fresh air dehumidification integrated machine, under the dehumidification mode, the refrigerant flow of the first exhaust heat exchanger is controlled through the first expansion valve, so that the reheat is controlled, the outlet air temperature is adjustable, and the first expansion valve and the second expansion valve are in synergistic effect, so that the dehumidification amount is not attenuated when the temperature is controlled in the dehumidification mode;

the multifunctional air conditioner integrates fresh air, dehumidification, refrigeration and heating, avoids a user from installing a plurality of air treatment devices, and can reduce the cost and space arrangement; the additional energy sources such as electric heating are saved for fresh air heating, and indoor energy is recovered; avoid energy loss, save energy, have high efficiency and good economic benefit.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a heat pump refrigerant system of the fresh air dehumidification integrated machine provided by the invention;

FIG. 2 is a schematic diagram of refrigerant delivery of the fresh air and dehumidification integrated machine according to the present invention;

fig. 3 is a second schematic diagram of refrigerant delivery of the fresh air dehumidification integrated machine according to the present invention;

FIG. 4 is one of the schematic gas flow processes;

FIG. 5 is a schematic perspective view of an embodiment of a fresh air and dehumidification integrated machine according to the present invention;

FIG. 6 is a second schematic structural perspective view of an embodiment of the integrated fresh air and moisture removal machine according to the present invention;

FIG. 7 is a schematic structural plan view of an embodiment of a fresh air dehumidification all-in-one machine provided by the invention;

FIG. 8 is a schematic side view of a structure of an embodiment of a fresh air dehumidification all-in-one machine according to the present disclosure;

FIG. 9 is a schematic forward view of the air flow circulation process;

FIG. 10 is a schematic side view of the airflow communication process;

in the figure, the position of the upper end of the main shaft,

100. a compressor;

200. a four-way valve; 210. an input port; 220. a return port; 230. a first port; 240. a second port;

310. an exhaust heat exchanger; 320. a first intake air heat exchanger; 330. a second air intake heat exchanger;

410. a first expansion valve; 420. a second expansion valve;

500. a filter;

610. a refrigerant main path; 620. a first refrigerant branch; 630. a first refrigerant auxiliary path; 631. a liquid side stop valve; 640. a second refrigerant auxiliary path; 650. a second refrigerant branch; 660. a third refrigerant branch;

700. an outer housing; 701. an outdoor air inlet area; 702. an outdoor exhaust area; 703. an indoor air supply area; 704. an indoor return air zone;

710. an outdoor air inlet; 720. an outdoor air outlet; 730. an indoor air supply outlet; 740. an indoor return air inlet;

800. and a heat exchange core body.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; may be mechanically coupled, may be directly coupled, or may be indirectly coupled through an intermediary. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed.

The fresh air conditioner provided by the embodiment executes a cooling and heating cycle of the air conditioner by using the compressor, the condenser, the expansion valve and the evaporator. The cooling and heating cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies a refrigerant medium to the air that has been conditioned and heat-exchanged.

The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve, and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigerating effect by heat exchange with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor, an exhaust heat exchanger, and an exhaust fan, the indoor unit of the air conditioner includes portions of an intake heat exchanger and an intake fan, and a throttling device (such as a capillary tube or an electronic expansion valve) may be provided in the indoor unit or the outdoor unit.

The intake air heat exchanger and the exhaust air heat exchanger are used as a condenser or an evaporator. The air conditioner performs a heating mode when the intake air heat exchanger functions as a condenser, and performs a cooling mode when the intake air heat exchanger functions as an evaporator.

The mode that the air inlet heat exchanger and the air exhaust heat exchanger are converted to be used as a condenser or an evaporator generally adopts a four-way valve, and the setting of a conventional air conditioner is specifically referred to, which is not described herein again.

The refrigeration working principle of the air conditioner is as follows: the compressor works to enable the interior of the air inlet heat exchanger (in the indoor unit, the evaporator at the moment) to be in an ultralow pressure state, liquid refrigerant in the air inlet heat exchanger is rapidly evaporated to absorb heat, air blown out by the indoor fan is cooled by the coil pipe of the air inlet heat exchanger to become cold air to be blown into a room, the evaporated and vaporized refrigerant is pressurized by the compressor, is condensed into liquid in a high-pressure environment in the air exhaust heat exchanger (in the outdoor unit, the condenser at the moment) to release heat, and the heat is dissipated into the atmosphere through the air exhaust fan, so that the refrigeration effect is achieved through circulation.

The heating working principle of the air conditioner is as follows: the gaseous refrigerant is pressurized by the compressor to become high-temperature and high-pressure gas, and the high-temperature and high-pressure gas enters the air inlet heat exchanger (the condenser at the moment), is condensed, liquefied and released heat to become liquid, and simultaneously heats indoor air, thereby achieving the purpose of improving the indoor temperature. The liquid refrigerant is decompressed by the throttling device, enters the exhaust heat exchanger (an evaporator at the moment), is evaporated, gasified and absorbs heat to form gas, absorbs the heat of outdoor air (the outdoor air becomes cooler) to form gaseous refrigerant, and enters the compressor again to start the next cycle.

The total heat exchanger in the fresh air conditioner can be a high-efficiency energy-saving heat recovery device, the introduced fresh air is preheated or precooled by recovering waste heat in exhaust gas, and the enthalpy value of the fresh air is reduced or increased before the fresh air is subjected to heat-humidity treatment. The load of the system is effectively reduced, the energy consumption and the operating cost of the system are saved, and the contradiction between the improvement of the indoor air quality and the energy saving of the system is effectively solved.

The operating principle of the total heat exchanger is as follows: when the air-flow heat exchanger works, indoor exhaust air and fresh air respectively flow through the heat exchanger core in a quadrature-fork mode, because the air flow on the two sides of the air flow partition plate has temperature difference and steam partial pressure difference, the heat transfer and mass transfer phenomena are generated when the two air flows pass through the partition plate, and the total heat exchange process is caused. When the air conditioner runs in summer, the fresh air obtains cold energy from the air exhaust of the air conditioner, so that the temperature is reduced, and meanwhile, the fresh air is dried by the air conditioner, so that the moisture content of the fresh air is reduced; when the air conditioner runs in winter, the fresh air is exhausted from the air conditioning room to obtain heat, and the temperature is increased. Therefore, the energy of the fresh air is recovered from the air exhaust of the air conditioner through the total heat exchange process of the heat exchange core body.

The application relates to a fresh air dehumidification all-in-one machine, including total heat exchanger and heat pump refrigerant system.

Referring to fig. 1-4, the heat pump refrigerant system includes a compressor 100, a four-way valve 200, an exhaust heat exchanger 310, a first intake heat exchanger 320, and a second intake heat exchanger 330, all of which are connected together by refrigerant lines.

An air inlet channel is formed between the outdoor air inlet 710 and the indoor air supply outlet 730 and used for conveying outdoor fresh air, and an air exhaust channel is formed between the indoor air return inlet 740 and the outdoor air outlet 720 and used for conveying indoor dirty air.

The exhaust air heat exchanger 310 is disposed in the exhaust air passage, and the first intake air heat exchanger 320 and the second intake air heat exchanger 330 are sequentially formed in the intake air passage along the circulation direction of the air flow.

The four-way valve 200 includes an input port 210, a return port 220, a first port 230, and a second port 240, and different working states of each of the intake heat exchanger and the exhaust heat exchanger 310 are realized by switching the communication relationship between the input port 210 and the first port 230 or the second port 240, thereby achieving the purpose of cooling or heating.

The refrigerant outlet of the compressor 100 is communicated with the inlet port 210, the return port 220 is communicated with the refrigerant return port of the compressor 100, and the first port 230 is connected with the exhaust heat exchanger 310 through the refrigerant main path 610.

The other end of the exhaust heat exchanger 310 is connected with a first refrigerant branch 620, and the first refrigerant branch 620 is respectively connected with the first intake heat exchanger 320 through a first refrigerant auxiliary circuit 630; is connected with the second intake heat exchanger 330 through the second refrigerant auxiliary passage 640.

The output end of the first intake air heat exchanger 320 is communicated with the second port 240 of the four-way valve 200 through a second refrigerant branch 650.

The output end of the second intake heat exchanger 330 is communicated with the main refrigerant path 610 through a third refrigerant branch 660.

The first refrigerant branch 620 is provided with a first expansion valve 410, and the second refrigerant auxiliary 640 is provided with a second expansion valve 420.

The first coolant auxiliary 630 is further provided with a liquid side stop valve 631.

Both sides of the first expansion valve 410 and the second expansion valve 420 are respectively connected with a filter 500 for filtering impurities doped in the refrigerant to prevent the expansion valves from being blocked.

The compressor 100, the four-way valve 200, the first expansion valve 410, and the second expansion valve 420 are all connected to a controller, and the controller controls the operation and the on/off state of the compressor 100, the four-way valve 200, the first expansion valve 410, and the second expansion valve 420 in different operation states.

Specifically, the controller controls the opening and closing of the first expansion valve 410 and the second expansion valve 420, and controls the mutual opening and closing of the input port 210, the return port 220, the first port 230, and the second port 240 in the four-way valve 200.

Referring to fig. 5 to 8, the total heat exchanger includes an outer case 700 and a heat exchange core 800 disposed in the outer case 700.

An outdoor air inlet 710, an outdoor air outlet 720, an indoor air supply outlet 730, and an indoor air return outlet 740 are formed in the outer case 700.

For the total heat exchanger, the outer casing 700 is used as a mounting and fixing component and is installed in the home of the user during the actual use process.

The shell body 700 is usually formed by processing sheet metal materials, and the whole shell body 700 is of a flat rectangular structure and can be hung in a suspended ceiling of a user home in the installation and use process.

An installation cavity is formed in the outer case 700 for installing working components such as the heat exchangers and the compressor 100.

The installation cavity includes an outdoor air intake area 701 communicating with an outdoor air intake 710, an outdoor air exhaust area 702 communicating with an outdoor air discharge 720, an indoor air supply area 703 communicating with an indoor air supply opening 730, and an indoor air return area 704 communicating with an indoor air return opening 740.

The heat exchange core 800 is a key component of a total heat exchanger, and is used for exchanging heat between indoor dirty air and outdoor fresh air, and the heat exchange core 800 is generally provided with a first air flow channel (not labeled) for exhausting air to the outdoor side and a second air flow channel for introducing the outdoor fresh air into the indoor, and heat can be transferred between the first air flow channel and the second air flow channel.

Meanwhile, in order to meet the requirement of indoor and outdoor air flow, an air inlet fan and an air exhaust fan are arranged in the shell.

The air inlet fan is arranged in the indoor air inlet area and used for driving outdoor fresh air to be input into the room from the indoor air supply opening 730.

The exhaust fan is disposed in the outdoor exhaust area 702, and is configured to drive indoor dirty air to be output outdoors through the outdoor exhaust outlet 720.

Outdoor fresh air enters the outer casing 700 from the outdoor air inlet 710 and is input into the room through the indoor air supply outlet 730.

Indoor dirty air enters the outer case 700 through the indoor air return opening 740, and is output to the outside through the outdoor air outlet 720.

Indoor dirty air and outdoor fresh air selectively pass through the heat exchange core body 800, and heat exchange is carried out in the heat exchange core body 800.

< heating mode >

Referring to fig. 2, 9 and 10, in the heating state, the controller controls the first expansion valve 410 to be opened, the second expansion valve 420 to be closed, and the input port 210 and the second port 240 of the four-way valve 200 to communicate with each other.

The high-temperature and high-pressure refrigerant is inputted into the second air intake heat exchanger 330 through the second port 240 of the four-way valve 200, and at this time, the first air intake heat exchanger 320 and the second air intake heat exchanger 330 serve as condensers, and the exhaust heat exchanger 310 serves as an evaporator.

The refrigerant releases heat in the first air intake heat exchanger 320 and the second air intake heat exchanger 330 in sequence, absorbs heat in the exhaust heat exchanger 310, and then is input back to the compressor 100 through the first port 230 and the return port 220 of the four-way valve 200, thereby completing a refrigerant cycle.

In the process that indoor dirty air is introduced into the heat exchange core body 800 through the exhaust fan to exchange heat with outdoor fresh air, the cold load of the outdoor fresh air is transferred to the indoor dirty air, so that the temperature of the outdoor fresh air is increased, and the cold load of an air conditioning system is favorably reduced; the indoor dirty air output from the heat exchange core 800 is still higher than the outdoor temperature, and the indoor dirty air takes away more cold load through the exhaust heat exchanger 310 (evaporator) again and is discharged to the outdoor, and the cold load of the air conditioning system is reduced again.

In the heating state, the outdoor fresh air is introduced by the air inlet fan, then is subjected to heat exchange with indoor dirty air through the heat exchange core 800, is subjected to primary temperature rise, and is subjected to secondary temperature rise through the first air inlet heat exchanger 320 and the second air inlet heat exchanger 330, so that the heating function is realized.

At this time, the second expansion valve 420 is closed, and a part of the refrigerant output from the discharge heat exchanger 310 is stored in the second intake heat exchanger 330.

At this time, the second intake air heat exchanger 330 is at the low pressure side, and the air flowing through the second intake air heat exchanger 330 has been processed by the first intake air heat exchanger 320, and the temperature is high.

At this time, only low-pressure gaseous refrigerant is in the second air intake heat exchanger 330, and most of the refrigerant still participates in circulation in the system, so that the problems of refrigerant shortage and frequent defrosting of the system can be effectively solved under the working condition of low-temperature heating.

< refrigeration mode >

Referring to fig. 3, 9 and 10, in the cooling state, the controller controls the first expansion valve 410 to be opened, the second expansion valve 420 to be closed, and the input port 210 of the four-way valve 200 to communicate with the first port 230.

The exhaust air heat exchanger 310 now functions as a condenser and the first intake air heat exchanger 320 as an evaporator.

The high-temperature and high-pressure refrigerant passes through the four-way valve 200 and the main refrigerant path 610 and then is input into the exhaust heat exchanger 310, the refrigerant is discharged in the exhaust heat exchanger 310 and then enters the first refrigerant branch 620, passes through the first expansion valve 410 on the first refrigerant branch 620 for throttling, then enters the first air intake heat exchanger 320 through the first refrigerant auxiliary path 630, absorbs heat in the first air intake heat exchanger 320, and then is input back into the compressor 100 through the second port 240 of the four-way valve 200 and the return port 220, thereby completing a refrigerant cycle.

Indoor dirty air is introduced into the heat exchange core 800 through the exhaust fan to exchange heat with outdoor fresh air, and the heat load of the outdoor fresh air is transferred to the indoor dirty air, so that the temperature of the outdoor fresh air is reduced, and the heat load of an air conditioning system is reduced; the indoor dirty air output from the heat exchange core 800 is still lower than the outdoor temperature, and the indoor dirty air passes through the exhaust heat exchanger 310 (condenser) again to take away more heat load and is discharged to the outdoor, so that the heat load of the air conditioning system is reduced again.

In a refrigerating state, outdoor fresh air is introduced by the air inlet fan, then is subjected to heat exchange with indoor dirty air through the heat exchange core 800, is subjected to primary cooling, and is subjected to secondary cooling through the first air inlet heat exchanger 320, so that a refrigerating function is realized.

Under the refrigeration mode, second air inlet heat exchanger 330 is in the high pressure side, and the air that flows through second air inlet heat exchanger 330 has already been handled through first air inlet heat exchanger 320 simultaneously, and the temperature is lower, and second air inlet heat exchanger 330 can store up high-pressure microthermal liquid refrigerant this moment, acts as the reservoir. Under the refrigeration overload working condition, the problem of too much refrigerant in the system can be effectively improved.

< dehumidification without temperature reduction and temperature control >

In the processes of cooling-free dehumidification and temperature-controlled dehumidification, the controller controls the first expansion valve 410 and the second expansion valve 420 to be opened, and the input port 210 of the four-way valve 200 is communicated with the first port 230.

The exhaust air heat exchanger 310 and the second intake air heat exchanger 330 are both condensers, and the first intake air heat exchanger 320 is an evaporator.

After being output from the compressor 100, the high-temperature and high-pressure refrigerant respectively passes through the first expansion valve 410 and the second expansion valve 420, and is then conveyed into the first air intake heat exchanger 320, and after being subjected to heat exchange by the first air intake heat exchanger 320, the refrigerant is conveyed back into the compressor 100.

At this time, indoor dirty air and indoor dirty air circulate from heat exchange core 800, heat recovery is completed in heat exchange core 800 for the first time, indoor dirty air heat rises, outdoor fresh air heat falls, indoor dirty air after rising passes through exhaust heat exchanger 310, temperature further rises after absorbing heat at exhaust heat exchanger 310, and then, the indoor dirty air is discharged outdoors.

Outdoor new trend is after heat transfer cooling with indoor dirty wind in heat transfer core 800 department, carries out the dehumidification of cooling through first air inlet heat exchanger 320, and the outdoor new trend after the dehumidification of cooling further heaies up the back through second air exhaust heat exchanger 310 again, reaches suitable temperature, exports to indoorly, improves user's comfort level.

In some embodiments of the present application, a first temperature detection element is disposed on the indoor air supply outlet 730 for detecting the air outlet temperature T1, and the first temperature detection element is connected to the controller.

The input end and the output end of the first air inlet heat exchanger 320 are also respectively provided with a second temperature detection piece and a third temperature detection piece which are connected with the controller, and the first detection piece and the second detection piece are respectively used for detecting the temperatures T2 and T3 of the refrigerants before and after entering the first air inlet heat exchanger 320.

The second temperature detection part and the third temperature detection part are used for detecting the temperature T2 and T3 of the refrigerant before and after entering the first air inlet heat exchanger 320, the superheat degree T = T2-T3 at the outlet of the first air inlet heat exchanger 320, and when T is 0 ℃, the optimal amount of the refrigerant passing through the first air inlet heat exchanger 320 is indicated.

The first temperature detection piece transmits the collected temperature information to the controller, and the controller compares the temperature information with the preset temperature.

In the temperature control dehumidification mode, the opening degree of the first expansion valve 410 can be adjusted in real time through the outlet air temperature of the indoor air supply outlet 730, so as to ensure that the indoor return air temperature is the same as the outlet air temperature.

The principle of the temperature control dehumidification mode is basically the same as that of the non-cooling dehumidification mode, and the difference lies in that: in the temperature control dehumidification mode, the outlet air temperature of the indoor air supply outlet 730 is controlled by the set value of the user, and the second expansion valve 420 is adjusted to control the amount of heat again, so that double control of the outlet air temperature and the outlet air humidity is realized.

No matter in the cooling dehumidification mode or the temperature control dehumidification mode, the throttling of the second expansion valve 420 affects the circulation quantity of the system refrigerant, and further affects the dehumidification quantity.

Therefore, in the dehumidification mode, the control target of the first expansion valve 410 is set to 0 degree of superheat T at the outlet of the first intake air heat exchanger 320, and the control target of the second expansion valve 420 is the outlet air temperature of the indoor air supply outlet 730, as follows:

when the opening degree of the second expansion valve 420 is too large, the refrigerant entering the first intake heat exchanger 320 will be excessive, the superheat degree of the outlet decreases, and even the refrigerant changes into a two-phase state, and the liquid returns to the compressor 100.

At this time, the controller controls the first expansion valve 410 to close, so as to ensure that the superheat degree of the first intake air heat exchanger 320 is unchanged.

When the second expansion valve 420 is opened too small, the refrigerant entering the first intake air heat exchanger 320 is reduced, the superheat degree of the outlet is too large, the evaporation temperature is increased, and the dehumidification amount is reduced. The controller controls the first expansion valve 410 to open the valve to a large extent, so as to ensure that the superheat degree of the first air intake heat exchanger 320 is unchanged.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments of the present invention are only examples, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also intended to be covered by the scope of the present invention.

Claims (10)

1. The utility model provides a new trend dehumidification all-in-one which characterized in that includes:

a total heat exchanger;

a heat pump refrigerant system: the system comprises a compressor, a four-way valve, an exhaust heat exchanger, a first air inlet heat exchanger and a second air inlet heat exchanger which are connected together through a refrigerant pipeline; the four-way valve comprises an input port, a backflow port, a first port and a second port;

the air exhaust heat exchanger is connected with the other end of the air exhaust heat exchanger through a first refrigerant branch, and the first refrigerant branch is connected with the first air inlet heat exchanger through a first refrigerant auxiliary path respectively; the first air inlet heat exchanger is connected with a first refrigerant auxiliary path, and the output end of the first air inlet heat exchanger is communicated with a first port of the four-way valve through a first refrigerant branch path; the output end of the second air inlet heat exchanger is communicated with the refrigerant main path through a third refrigerant branch; the first refrigerant branch is provided with a first expansion valve, and the second refrigerant auxiliary channel is provided with a second expansion valve.

2. The fresh air and dehumidification integrated machine according to claim 1,

the compressor is electrically connected with the four-way valve, and the first expansion valve and the second expansion valve are electrically connected with the controller.

3. The integrated fresh air and dehumidification machine according to claim 1,

and two sides of the first expansion valve and the second expansion valve are respectively connected with a filter.

4. The fresh air and dehumidification integrated machine according to claim 2,

the total heat exchanger comprises an outer shell and a heat exchange core body arranged in the outer shell, wherein an outdoor air inlet, an outdoor air outlet, an indoor air supply outlet and an indoor air return inlet are formed in the outer shell.

5. The fresh air and dehumidification integrated machine according to claim 4,

the indoor air supply outlet is provided with a first temperature detection piece for detecting the air outlet temperature, and the first temperature detection piece is connected with the controller.

6. The fresh air and dehumidification integrated machine according to claim 2,

and the input end and the output end of the first air inlet heat exchanger are respectively provided with a second temperature detection piece and a third temperature detection piece which are connected with the controller.

7. The fresh air and dehumidification integrated machine according to claim 4,

an air inlet channel is formed between the outdoor air inlet and the indoor air supply outlet and used for conveying outdoor fresh air, and an air exhaust channel is formed between the indoor air return inlet and the outdoor air outlet and used for conveying indoor dirty air.

8. The integrated fresh air and dehumidification machine according to claim 7,

the air exhaust heat exchanger is arranged in the air exhaust channel, and the first air intake heat exchanger and the second air intake heat exchanger are sequentially formed in the air intake channel along the circulation direction of air flow.

9. The integrated fresh air and dehumidification machine according to claim 4,

an installation inner cavity is formed in the outer shell and comprises an outdoor air inlet area communicated with the outdoor air inlet, an outdoor air outlet area communicated with the outdoor air outlet, an indoor air supply area communicated with the indoor air supply outlet and an indoor air return area communicated with the indoor air return inlet.

10. The integrated fresh air and dehumidification machine according to claim 9,

the indoor air supply area is provided with an air inlet fan for driving outdoor fresh air to be input into the indoor air supply outlet, and the outdoor air exhaust area is provided with an air exhaust fan for driving indoor dirty air to be output out of the outdoor air outlet.

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