CN220250164U - Fresh air conditioner - Google Patents

Abstract

The utility model discloses a fresh air conditioner, which comprises a total heat exchanger and a refrigerant system, wherein the refrigerant system comprises an exhaust heat exchanger, an inlet air heat exchanger and an auxiliary heat exchanger which are connected together through refrigerant pipelines, an ice melting section is arranged below the exhaust heat exchanger, and at least part of the ice melting section extends into a water receiving disc; one end of the air exhaust heat exchanger is connected with the auxiliary heat exchanger and the ice melting section respectively, and the other end of the ice melting section is connected with the air inlet heat exchanger; in a heating state in winter, the ice melting section is connected with the air inlet heat exchanger so as to improve the temperature of the bottom of the air exhaust heat exchanger, prevent condensed water in the water receiving disc from freezing and improve the heating stability; in the cooling state or the non-cooling dehumidification state in summer, the ice melting section positioned at the bottom of the air exhaust heat exchanger is connected with the output end of the air exhaust heat exchanger, and the temperature of the refrigerant flowing in the ice melting section is reduced after the temperature of the refrigerant is reduced through the air exhaust heat exchanger, so that the damage to a water receiving disc caused by high-temperature refrigerant in the air exhaust heat exchanger can be avoided.

Description

Fresh air conditioner

Technical Field

The utility model relates to the technical field of air conditioners, in particular to a fresh air conditioner.

Background

In recent years, demands for quality of life have been increasing, but environmental problems have been increasing, so that capacities of air purification markets have been rapidly developed in recent years, and air conditioning systems for adjusting indoor air temperature and air quality have been updated and advanced.

Compared with the traditional air conditioner, the fresh air conditioner can provide better air quality, the fresh air conditioner combines the air purification function and has the effects of dehumidification, humidification and the like, the user experience is better, the heat exchanger in the fresh air conditioner is used as an important heat exchange dehumidification component, a key effect is achieved in the air conditioner, the comprehensive heat recovery efficiency in the fresh air conditioner is high, the exhaust air is lower than zero degree in a heating state in winter, the water receiving disc has freezing risks, and the problems that the cooling in summer and the dehumidifying state are higher in exhaust air temperature and the condenser is directly connected with the compressor for exhausting, the bottom temperature of the condenser exceeds 80 ℃, and the plastic water receiving disc has softening or even melting risks, so that condensed water is not completely discharged are solved.

The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The utility model aims to provide a fresh air conditioner, which is used for solving the problems that in the prior art, in a heating state in winter, exhaust air is lower than zero, a water receiving disc has freezing risk, in a cooling and dehumidifying state in summer, the exhaust air temperature is higher, a condenser is directly connected with a compressor for exhausting, the bottom temperature of the condenser is too high, and the water receiving disc has softening and even melting risks.

In order to achieve the aim of the utility model, the utility model is realized by adopting the following technical scheme:

the application provides a fresh air conditioner, it includes:

total heat exchanger: the heat exchange type air conditioner comprises an outer shell, a heat exchange core body arranged in the outer shell, an air exhaust fan and an air supply fan;

refrigerant system: the air conditioner comprises a compressor, a four-way valve and a heat exchanger group which are connected together through a refrigerant pipeline, wherein the heat exchanger group comprises an exhaust heat exchanger, an air inlet heat exchanger and an auxiliary heat exchanger, and a water receiving disc is arranged below the heat exchanger group; an ice melting section is arranged below the exhaust heat exchanger, an ice melting pipe section is formed in the ice melting section, and at least part of the ice melting section extends into the water receiving disc;

the air exhaust heat exchanger is connected with a first valve port of the four-way valve, the other end of the air exhaust heat exchanger is connected with the auxiliary heat exchanger through a first refrigerant branch and connected with the ice melting section through a second refrigerant branch, the other end of the auxiliary heat exchanger is connected with the second refrigerant branch through a first refrigerant auxiliary path, the other end of the ice melting section is connected with the air inlet heat exchanger through a second refrigerant auxiliary path, and the other end of the air inlet heat exchanger is connected with a second valve port of the four-way valve.

In some embodiments of the present application, an input end of the compressor is connected with a third valve port of the four-way valve, an output end of the compressor is connected with a fourth valve port of the four-way valve, a first expansion valve is arranged on the first refrigerant branch, a second expansion valve is arranged on the second refrigerant auxiliary, and two ends of the first expansion valve and two ends of the second expansion valve are respectively connected with a filter.

In some embodiments of the present application, the second refrigerant branch is provided with a switch valve and a check valve, and the check valve is used for controlling the refrigerant to flow from the exhaust heat exchanger to the ice melting section direction through the switch valve.

In some embodiments of the present application, in the heating mode, the fourth valve port is connected to the second valve port, the third valve port is connected to the first valve port, the second expansion valve is in a fully opened state, the air intake heat exchanger and the auxiliary heat exchanger are used as condensers, and the air exhaust heat exchanger is used as an evaporator;

the refrigerant output from the compressor is input into the air inlet heat exchanger through the four-way valve, the refrigerant output after heat exchange of the air inlet heat exchanger is input into the auxiliary heat exchanger through the second expansion valve and the ice melting section, the ice melting section is used for heating condensed water in the water tray to prevent the condensed water from freezing, and the refrigerant output from the auxiliary heat exchanger is input back into the compressor through the air exhaust heat exchanger after passing through the first expansion valve.

In some embodiments of the present application, in the refrigeration mode, the fourth valve port is connected to the first valve port, the third valve port is connected to the second valve port, the switch valve is opened, the auxiliary heat exchanger is bypassed, the air intake heat exchanger is an evaporator, and the air exhaust heat exchanger is a condenser;

the refrigerant output from the compressor flows into the exhaust heat exchanger through the four-way valve, the refrigerant output from the exhaust heat exchanger is directly input into the ice melting section from the second refrigerant branch, the ice melting section is used for cooling condensed water in the exhaust heat exchanger and the water receiving disc, and the refrigerant output from the ice melting section is returned to the compressor after heat exchange of the air inlet heat exchanger.

In some embodiments of the present application, in a non-cooling dehumidification mode, the fourth valve port is connected to the first valve port, the third valve port is connected to the second valve port, the switch valve is closed, and the first expansion valve is fully opened; the air exhaust heat exchanger and the auxiliary heat exchanger are used as condensers, and the air inlet heat exchanger is an evaporator;

the refrigerant output from the compressor flows into the exhaust heat exchanger through the four-way valve, the refrigerant output from the exhaust heat exchanger is input into the ice melting section through the auxiliary heat exchanger, the ice melting section is used for cooling condensed water in the exhaust heat exchanger and the water receiving disc, and the refrigerant output from the ice melting section is returned to the compressor after heat exchange of the air inlet heat exchanger.

In some embodiments of the present application, the outer casing is formed with an outdoor air inlet, an outdoor air outlet, an indoor air supply port and an indoor air return port;

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 outlet and the outdoor air exhaust outlet and used for conveying indoor polluted air; the air exhaust heat exchanger and the air inlet heat exchanger are longitudinally and fixedly connected to the heat exchange support, the air exhaust heat exchanger is arranged in the air exhaust channel, and the air inlet heat exchanger and the auxiliary heat exchanger are sequentially formed in the air inlet channel along the flowing direction of air flow.

In some embodiments of the present application, the water pan is located below the heat exchanger group, including first water receiving area and second water receiving area, first water receiving area is located air inlet heat exchanger below, the bottom surface height of first water receiving area is higher than the bottom surface height of second water receiving area, air inlet heat exchanger with still be provided with the sealing member between the water pan, be formed with drainage channel on the sealing member, be used for with comdenstion water in the first water receiving area is discharged to in the second water receiving area.

In some embodiments of the present application, wherein, the both ends of air inlet heat exchanger are connected with first connecting piece respectively, the both ends of assisting the heat exchanger are connected with the second connecting piece respectively, be formed with first connection outer edge on the first connecting piece, be formed with the second connection outer edge on the second connecting piece, be formed with at least one first joint portion on the first connection outer edge, be formed with on the second connection outer edge with each first joint portion position looks adaptation's second joint portion, under the installed state, first joint portion with second joint portion connects.

In some embodiments of the present application, the outer casing is formed with 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 opening, and an indoor air return area communicated with the indoor air return opening;

the outdoor air exhaust area is connected with the indoor air supply area through the refrigerant pipe group, the refrigerant pipe group comprises a first pipe group connected with the compressor and a second pipe group connected with the heat exchanger group, an inserting section is formed at the end part of the second pipe group, and the end part of the first pipe group is inserted into the inserting section.

Compared with the prior art, the utility model has the advantages and positive effects that:

according to the fresh air conditioner, the exhaust heat exchanger is used as an evaporator, the bottommost part of the exhaust heat exchanger is connected with the ice melting section, the temperature of the exhaust heat exchanger is lower in a heating state in winter, the ice melting section is connected with the air inlet heat exchanger, the temperature of the bottom of the exhaust heat exchanger can be increased, condensed water in the water receiving disc is prevented from being frozen, and the heating stability is improved;

in a refrigerating state or a non-cooling dehumidification state in summer, the air exhaust heat exchanger is used as a condenser to be connected with the output end of the compressor, the ice melting section at the bottom of the air exhaust heat exchanger is connected with the output end of the air exhaust heat exchanger, and the temperature of the refrigerant flowing in the ice melting section is reduced after the refrigerant is cooled by the air exhaust heat exchanger, so that damage to a water tray caused by high-temperature refrigerant in the air exhaust heat exchanger can be avoided;

the fresh air conditioner does not need to be provided with an additional heating or cooling structure on the water receiving disc, and the temperature regulation of the water receiving disc can be realized by utilizing the state change of the refrigerant passing through each heat exchanger, so that the generation of the problems of freezing condensed water or damaging the water receiving disc and the like is avoided.

Other features and advantages of the present utility model will become apparent upon review of the detailed description of the utility model in conjunction with the drawings.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

Fig. 1 is one of internal structural schematic diagrams of a fresh air conditioner according to an embodiment;

FIG. 2 is a second schematic view of an internal structure of a fresh air conditioner according to an embodiment;

FIG. 3 is a schematic diagram of a refrigerant system connection;

FIG. 4 is a schematic diagram showing the flow of refrigerant in the heating state;

fig. 5 is a schematic diagram showing the flow of the refrigerant in the cooling state;

FIG. 6 is a schematic diagram showing the flow of refrigerant in a non-cooling dehumidification state;

FIG. 7 is a schematic diagram of a connection of a heat exchanger package to a drip tray according to an embodiment;

FIG. 8 is a schematic view of a seal position;

FIG. 9 is a schematic view of a water pan structure;

FIG. 10 is a schematic view of a seal configuration;

FIG. 11 is a schematic diagram of the connection of an exhaust heat exchanger, an intake heat exchanger and an auxiliary heat exchanger;

FIG. 12 is a schematic view illustrating the disassembly of the first connector, the second connector and the first fastener;

FIG. 13 is a schematic illustration of a refrigerant tube set connection between a compressor and a heat exchanger set;

FIG. 14 is an enlarged schematic view at A in FIG. 13;

reference numerals:

10. a four-way valve; 11. a first valve port; 12. a second valve port; 13. a third valve port; 14. a fourth valve port;

21. a first refrigerant main path; 22. a second refrigerant main path; 23. the method comprises the steps of carrying out a first treatment on the surface of the A first refrigerant branch; 24. a second refrigerant branch; 25. a first refrigerant auxiliary passage; 26. a second refrigerant auxiliary passage;

30. a first expansion valve; 40. a switch valve; 50. a one-way valve; 60. a second expansion valve; 70. a filter; 80. a filling valve;

100. an outer housing;

101. an outdoor air inlet; 1011. an outdoor air inlet area;

102. an outdoor air outlet; 1021. an outdoor exhaust area;

103. an indoor air supply port; 1031. an indoor air supply area;

104. an indoor air return port; 1041. an indoor return air area;

200. a heat exchange core;

300. an air inlet heat exchanger;

310. an auxiliary heat exchanger;

320. a first connector; 321. a first connecting outer edge; 3211. a first clamping part;

330. a second connector; 331. a second connecting outer edge; 3311. a second clamping part;

340. a first fixing member; 341. a first lap joint;

400. an exhaust heat exchanger;

410. an ice melting section;

420. a third connecting member;

430. a second fixing member;

440. a foaming member;

500. a compressor;

510. a first tube group;

520. a second tube group;

530. a plug section;

600. an air inlet fan;

700. an exhaust fan;

800. a heat exchange bracket;

900. a water receiving tray; 901. a first water receiving area; 902. a second water receiving area; 903. supporting and profiling;

910. a seal;

911. a mounting groove;

912. and (5) cutting.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should 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 the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

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

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

The present embodiment provides a fresh air conditioner that performs a cooling and heating cycle of the air conditioner by using a compressor 500, a condenser, an expansion valve, and an evaporator. The refrigeration and heating cycle includes a series of processes involving compression, condensation, expansion and evaporation and supplying a refrigerant medium to the conditioned and heat exchanged air.

The air conditioner in this application performs a refrigerating cycle of the air conditioner by using the compressor 500, the condenser, the expansion valve, and the evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and refrigerating or heating an indoor space.

The low-temperature low-pressure refrigerant enters the compressor 500, the compressor 500 compresses the refrigerant gas in a high-temperature high-pressure state, and the compressed refrigerant gas is discharged. 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 liquid-phase refrigerant in a high-temperature and high-pressure state formed by condensation 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 500. The evaporator may achieve a cooling effect by exchanging heat with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner may adjust the temperature of the indoor space throughout the cycle.

The outdoor unit of the air conditioner refers to a portion of the refrigeration cycle including the compressor 500 and the outdoor heat exchanger, the indoor unit of the air conditioner includes the indoor heat exchanger, and the expansion valve may be provided in the indoor unit or the outdoor unit.

The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater of a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler of a cooling mode.

The air intake heat exchanger 300 and the air exhaust heat exchanger 400 are converted into a condenser or an evaporator, and generally use the four-way valve 10, and the arrangement of the conventional air conditioner is specifically referred to, which is not described herein.

The refrigeration working principle of the air conditioner is as follows: the compressor 500 works to make the inside of the air intake heat exchanger 300 (in the air intake channel, at this time, the evaporator) in an ultra-low pressure state, the liquid refrigerant in the air intake heat exchanger 300 evaporates rapidly to absorb heat, the air blown out by the indoor fan is cooled by the coil pipe of the air intake heat exchanger 300 and then changed into cold air to blow into the indoor, the evaporated refrigerant is condensed into liquid state in the high pressure environment in the air exhaust heat exchanger 400 (in the air exhaust channel, at this time, the condenser) after being pressurized by the compressor 500, the heat is released, and the heat is dissipated into the atmosphere by the air exhaust fan 700, so that the refrigerating effect is achieved.

The heating working principle of the air conditioner is as follows: the gaseous refrigerant is pressurized by the compressor 500 to become high-temperature and high-pressure gas, and enters the air intake heat exchanger 300 (a condenser in this case), and is condensed, liquefied and released to become liquid, and at the same time, the indoor air is heated, so that the purpose of increasing the indoor temperature is achieved. The liquid refrigerant is decompressed by the throttle device, enters the exhaust heat exchanger 400 (an evaporator at this time), evaporates and gasifies to absorb heat, becomes gas, absorbs heat of the outdoor air (the outdoor air becomes colder) and becomes a gaseous refrigerant, and enters the compressor 500 again to start the next cycle.

The heat exchange fresh air fan mainly comprises a total heat exchanger and a refrigerant system, wherein the total heat exchanger is used for realizing heat exchange between indoor exhaust air and outdoor fresh air, and the refrigerant system is used for carrying out heat exchange with air through the air inlet heat exchanger 300 so as to change the indoor environment temperature.

Referring to fig. 1 and 2, the fresh air conditioner according to the present application includes a total heat exchanger and a refrigerant system, wherein the total heat exchanger includes an outer case 100, and a heat exchange core 200, an exhaust fan 700 and an air supply fan which are disposed in the outer case 100; an outdoor air inlet 101 and an outdoor air outlet 102 are formed on the side of the outer case 100 communicating with the outside, and an indoor air supply opening 103 and an indoor air return opening 104 are formed on the side communicating with the inside.

An installation cavity is formed in the outer shell 100, a longitudinal baffle extending longitudinally is arranged in the installation cavity, and two ends of the longitudinal baffle extend to the inner side of the outer shell 100 respectively; one side of the longitudinal baffle is provided with a transverse baffle, and the other side is provided with a heat exchange core 200.

The outer shell 100, the transverse barrier and the longitudinal barrier divide the installation cavity into an indoor air supply area 1031 communicated with the indoor air supply opening 103 and an outdoor air exhaust area 1021 communicated with the outdoor air exhaust opening 102;

the outer housing 100, heat exchange core 200 and longitudinal baffles divide the mounting cavity into an indoor return air zone 1041 in communication with the indoor return air inlet 104 and an outdoor inlet air zone 1031 in communication with the outdoor inlet 101.

An exhaust duct is formed between the indoor return air inlet 104 and the outdoor exhaust air outlet 102, and an intake duct is formed between the outdoor intake air inlet 101 and the indoor supply air inlet 103.

The air intake fan 600 is located in the air intake passage, and the air exhaust fan 700 is located in the air exhaust passage.

The air intake fan 600 is turned on to drive outdoor air flow to be conveyed indoors through the air intake channel, and the air exhaust fan 700 is turned on to drive indoor air flow to be output outdoors through the air exhaust channel.

The refrigerant system comprises a compressor 500, a four-way valve 10 and a heat exchanger group which are connected together through refrigerant pipelines, wherein the heat exchanger group specifically comprises an exhaust heat exchanger 400, an inlet heat exchanger 300 and an auxiliary heat exchanger 310.

The exhaust heat exchanger 400 is disposed between the outdoor air intake area 1011 and the outdoor air exhaust area 1021, the air intake heat exchanger 300 is disposed between the indoor air supply area 1031 and the indoor return area 1041, and the auxiliary heat exchanger 310 is disposed side by side on the air flow output side of the air intake heat exchanger 300.

Referring to fig. 3, the four-way valve 10 specifically includes a first valve port 11, a second valve port 12, a third valve port 13, and a fourth valve port 14, the first valve port 11 is connected to the exhaust heat exchanger 400, the second valve port 12 is connected to the intake heat exchanger 300, the third valve port 13 is connected to an input end of the compressor 500, and the fourth valve port 14 is connected to an output end of the compressor 500.

A water pan 900 is arranged below the heat exchanger group, an ice melting section 410 is arranged below the exhaust heat exchanger 400, an ice melting pipe section is formed in the ice melting section 410, and the ice melting section 410 at least partially extends into the water pan 900.

The following describes each working element in the refrigerant system in detail:

the exhaust heat exchanger 400 is connected to the first valve port 11 of the four-way valve 10 through the first refrigerant main path 21, two refrigerant paths extend from the other end of the exhaust heat exchanger 400, one of the two refrigerant paths is connected to the auxiliary heat exchanger 310 through the first refrigerant branch path 23, the other path is connected to the ice melting section 410 through the second refrigerant branch path 24, and the other end of the auxiliary heat exchanger 310 is connected to the second refrigerant branch path 24 through the first refrigerant auxiliary path 25, that is, the refrigerant output from the auxiliary heat exchanger 310 is also connected to the ice melting section 410 through the first refrigerant auxiliary path 25.

The first refrigerant branch 23 is provided with a first expansion valve 30, the second refrigerant branch 24 is provided with a switch valve 40 and a check valve 50, and the check valve 50 is used for controlling the refrigerant to flow from the exhaust heat exchanger 400 to the ice melting section 410 through the switch valve 40.

The other end of the ice melting section 410 is connected to the air intake heat exchanger 300 through a second refrigerant auxiliary path 26, and a second expansion valve 60 is disposed on the second refrigerant auxiliary path 26.

The intake air heat exchanger 300 is connected to the second valve port 12 of the compressor 500 through the second refrigerant main passage 22.

The expansion valve is a common part in a refrigeration system, is arranged between the condenser and the evaporator, plays a role of throttling and reducing pressure, and is connected with a filter 70 at two ends of the first expansion valve 30 and the second expansion valve 60 respectively in order to prevent impurities from being deposited when the refrigerant passes through the first expansion valve 30 and the second expansion valve 60.

The design of the ice melting section 410 in the fresh air conditioner can avoid the excessively low temperature of the exhaust heat exchanger 400 and the freezing of the water pan 900 in the heating state in winter; or in the state of refrigeration in summer and no temperature reduction and dehumidification, the exhaust heat exchanger 400 is directly connected with the output end of the compressor 500, so that the water pan 900 is softened and damaged.

Referring to fig. 4, in the heating mode, the fourth valve port 14 of the compressor 500 is connected to the second valve port 12, the third valve port 13 is connected to the first valve port 11, the second expansion valve 60 is in a fully opened state, and the air intake heat exchanger 300 and the auxiliary heat exchanger 310 are used as condensers, and the air exhaust heat exchanger 400 is used as an evaporator.

The refrigerant output from the compressor 500 is input into the air intake heat exchanger 300 through the second refrigerant main path 22 after passing through the fourth valve port 14 and the second valve port 12 of the four-way valve 10, the refrigerant output after heat exchange by the air intake heat exchanger 300 is input into the auxiliary heat exchanger 310 through the second expansion valve 60 and the ice melting section 410, the refrigerant output from the auxiliary heat exchanger 310 is changed into a low-temperature low-pressure liquid refrigerant after passing through the first expansion valve 30, and the liquid refrigerant is evaporated and absorbed by the air exhaust heat exchanger 400 and then is input into the compressor 500.

In this state, the exhaust heat exchanger 400 is an evaporator, and the surface temperature is lower, so that after the exhaust heat exchanger is directly contacted with the water tray 900, condensed water in the water tray 900 is easy to freeze.

The first refrigerant main path 21 and the first refrigerant branch path 23 are further provided with a charging valve 80 for supplementing the refrigerant into the pipeline.

Referring to fig. 5, in the cooling mode, the fourth valve port 14 of the compressor 500 is connected to the first valve port 11, the third valve port 13 is connected to the second valve port 12, the switching valve 40 is opened, the auxiliary heat exchanger 310 is bypassed, the intake heat exchanger 300 is an evaporator, and the exhaust heat exchanger 400 is a condenser.

The refrigerant outputted from the compressor 500 flows into the exhaust heat exchanger 400 through the four-way valve 10, and the refrigerant outputted from the exhaust heat exchanger 400 is directly inputted into the ice melting section 410 from the second refrigerant branch 24.

Because the air exhaust heat exchanger 400 is used as a condenser in this shape and is connected with the output end of the compressor 500, the high-temperature and high-pressure refrigerant output by the compressor 500 is directly connected with the water receiving disc 900 in the air exhaust heat exchanger 400, so that the water receiving disc 900 is easy to deform due to heating, the bottom of the air exhaust heat exchanger 400 is provided with the ice melting section 410, the ice melting section 410 is connected with the output end of the air exhaust heat exchanger 400, the refrigerant cooled by the air exhaust heat exchanger 400 passes through the ice melting section 410 after being cooled, the ice melting section 410 is connected with the water receiving disc 900, and the water receiving disc 900 can avoid being directly connected with the air exhaust heat exchanger 400, and the ice melting section 410 plays a role in cooling the bottom of the air exhaust heat exchanger 400 and the surface of the water receiving disc 900.

The refrigerant outputted from the ice melting section 410 is returned to the compressor 500 after heat exchange by the air intake heat exchanger 300.

Referring to fig. 6, in the non-cooling dehumidification mode, the fourth valve port 14 in the compressor 500 is connected to the first valve port 11, the third valve port 13 is connected to the second valve port 12, the switching valve 40 is closed, and the first expansion valve 30 is fully opened; the air exhaust heat exchanger 400 and the auxiliary heat exchanger 310 serve as condensers, and the air intake heat exchanger 300 serves as an evaporator;

the refrigerant output from the compressor 500 flows into the exhaust heat exchanger 400 through the four-way valve 10, the refrigerant output from the exhaust heat exchanger 400 is input into the ice melting section 410 through the auxiliary heat exchanger 310, the ice melting section 410 is used for cooling condensed water in the exhaust heat exchanger 400 and the water pan 900, and the refrigerant output from the ice melting section 410 is returned to the compressor 500 after heat exchange by the air inlet heat exchanger 300.

In the non-cooling dehumidification mode, the refrigerant output by the auxiliary heat exchanger 310 is cooled to be a low-temperature high-pressure liquid refrigerant, and the refrigerant in the state is introduced into the bottom end of the condenser through the ice melting section 410 to cool the bottom end of the exhaust heat exchanger 400 and the surface of the water receiving disc 900, so that the high-temperature refrigerant at the upper part of the exhaust heat exchanger 400 is prevented from being directly conducted to the water receiving disc 900, and the water receiving disc 900 is prevented from being damaged.

Referring to fig. 7, the intake air heat exchanger 300 and the exhaust air heat exchanger 400 are fixed in the installation cavity by a heat exchange bracket 800.

The air inlet heat exchanger 300 and the air outlet heat exchanger 400 are longitudinally arranged on the heat exchange bracket 800, and two ends of the heat exchange bracket 800 extend to the indoor side and the outdoor side of the whole installation cavity, at this time, the heat exchange bracket 800 serves as a longitudinal baffle to realize the partition purpose of the installation cavity.

That is, one end of the heat exchange bracket 800 is connected between the indoor air supply port 103 and the indoor air return port 104, and the other end of the heat exchange bracket 800 is connected between the outdoor air outlet 102 and the outdoor air inlet 101.

Referring to fig. 9, corresponding to the exhaust heat exchanger 400 and the intake heat exchanger 300 in the heat exchanger group, a water receiving cavity extending downward is formed in the water receiving tray 900, and the water receiving cavity is divided into a first water receiving area 901 and a second water receiving area 902 according to specific positions, the first water receiving area 901 is located below the intake heat exchanger 300 and the auxiliary heat exchanger 310, the exhaust heat exchanger 400 is located above the second water receiving area 902, and the bottom surface height of the first water receiving area 901 is higher than the bottom surface height of the second water receiving area 902.

That is, there is a height difference between the bottom of the first water receiving area 901 and the bottom of the second water receiving area 902, and the design of the height difference can offset the influence of the pressure difference formed between the indoor air supply area 1031 and the outdoor air exhaust area 1021 on the drainage of condensed water after the air intake fan 600 and the air exhaust fan 700 are turned on, so as to avoid the problem that the condensed water in the first water receiving area 901 cannot be completely drained into the second water receiving area 902 and the condensed water in the first water receiving area 901 is not completely drained when the pressure of the outdoor air exhaust area 1021 is greater than the pressure in the indoor air supply area 1031.

The second water receiving area 902 communicates with the drain assembly to drain the condensed water in the water receiving tray 900.

The bottoms of the first water receiving area 901 and the second water receiving area 902 are formed with upward supporting profiling 903, and the supporting profiling 903 protrudes to a certain height from the bottom of the water receiving tray 900 for supporting the heat exchanger group.

At least two support profiling 903 are respectively and alternately arranged at the bottoms of the air exhaust heat exchanger 400, the air inlet heat exchanger 300 and the auxiliary heat exchanger 310, and then the heat exchanger group is supported above the water pan 900, so that the bottoms of the heat exchanger group are prevented from being soaked in condensed water.

A drain assembly is connected to the second water receiving area 902 for draining condensed water in the second water receiving area 902.

In some embodiments of the present application, in conjunction with fig. 8-10, in order to avoid the air flow between the indoor supply area 1031 and the outdoor exhaust area 1021 from flowing from the water tray 900 to each other, a seal 910 is further provided between the air intake heat exchanger 300, the auxiliary heat exchanger 310, and the water tray 900.

A drain passage is formed in the sealing member 910 for draining condensed water in the first water receiving area 901 into the second water receiving area 902.

The width of the sealing member 910 is adapted to the width of the first water receiving area 901, the sealing member 910 seals the indoor air supply area 1031, and the first water receiving area 901 discharges condensed water from the water discharge passage into the second water receiving area 902.

Specifically, the sealing member 910 is formed with a mounting groove 911 adapted to the inlet air heat exchanger 300 and the auxiliary heat exchanger 310, and the inlet air heat exchanger and the auxiliary heat exchanger 310 are supported in the mounting groove 911.

The sealing member 910 is formed with a cut groove, a drainage channel is formed between the cut groove and the water receiving tray 900, and condensed water is discharged from the drainage channel on the sealing member 910, so that the flow of air flow between the outdoor air discharge area 1021 and the indoor air supply area 1031 is reduced, and the working effect of the air conditioner is improved.

In the traditional heat exchanger group installation, generally all heat exchangers are independently fixed in an installation cavity, and in the installation mode, the installation space is limited in the installation process, so that the installation efficiency of operators is low, and the installation is inconvenient.

Besides, the heat exchangers are independently installed, relatively large installation errors exist between the heat exchangers, the follow-up refrigerant pipeline is inconvenient to install due to accumulation of errors, and large installation gaps can be formed, so that the problems of leakage of indoor and outdoor air flow and the like are solved.

In order to improve the shortcut degree of each heat exchanger in the installation process, reduce the installation error between the heat exchangers, the new trend heat exchanger that this application provided installs between the installation inner chamber at the heat exchanger group, preinstalls in the outside earlier.

The air inlet heat exchanger 300 and the auxiliary heat exchanger 310 are arranged side by side, the auxiliary heat exchanger 310 is positioned at the output end of the air inlet heat exchanger 300, and two ends of the air inlet heat exchanger 300 are detachably connected with the auxiliary heat exchanger 310.

Referring to fig. 11 and 12, specifically, first connectors 320 are disposed at two ends of the air intake heat exchanger 300, second connectors 330 are disposed at two ends of the auxiliary heat exchanger 310, at least one first clamping portion 3211 is formed on the first connectors 320 along the height direction thereof, and second clamping portions 3311 are formed on the second connectors 330 to be matched with the positions of the first clamping portions 3211, wherein in an installed state, the first clamping portions 3211 are connected with the second clamping portions 3311.

Specifically, a first connecting outer edge 321 extending and bending to one side is formed on the first connecting piece 320, a second connecting outer edge 331 bending in the same direction as the first connecting outer edge 321 is formed on the second connecting piece 330, a first clamping portion 3211 is formed on the first connecting outer edge 321, and a second clamping portion 3311 is formed on the second connecting outer edge 331.

The first connection outer edge 321 and the second connection outer edge 331 positioned at the two ends of the air inlet heat exchanger 300 and the auxiliary heat exchanger 310 may be in the same direction or may be opposite to each other.

That is, the first connection outer edge 321 and the second connection outer edge 331 may both extend toward the heat exchanger, and the cover is disposed at two sides of the heat exchanger; the first connecting outer edge 321 and the second connecting outer edge 331 may both extend away from the heat exchanger; or the first connecting outer edge 321 and the second connecting outer edge 331 at one end of the heat exchanger extend towards the direction of the heat exchanger, and the first connecting outer edge 321 and the second connecting outer edge 331 at the other end extend away from the direction of the heat exchanger; it is only necessary to ensure that the first clamping portion 3211 and the second clamping portion 3311 located at both ends can be clamped to each other during the installation process.

The first clamping portion 3211 or the second clamping portion 3311 is a buckle protruding out of the surface of the first connecting outer edge 321, the second clamping portion 3311 or the first clamping portion 3211 is a notch formed on the second connecting outer edge 331, and the size of the buckle is matched with the notch.

The buckle can be of an upward structure with an opening or can be in a way that the opening is downwards clamped into the notch.

Taking the first clamping portion 3211 as a fastening structure, the second clamping portion 3311 as a notch structure as an example, and the fastening structure as an example with an upward opening direction as an example.

In the installation process, the auxiliary heat exchanger 310 is installed from top to bottom, and along with the downward movement of the auxiliary heat exchanger 310, the second clamping parts 3311 at two ends are clamped at the outer sides of the first clamping parts 3211 and are connected into the openings in a clamping manner, so that the auxiliary heat exchanger 310 and the air inlet heat exchanger 300 are connected and fixed.

The first fixing piece 340 is further arranged above the first connecting piece 320 and the second connecting piece 330, the first fixing piece 340 is of a sheet metal structure, first lap joint portions 341 extending downwards are formed at two ends of the first fixing piece 340, the first lap joint portions 341 are detachably connected to the first connecting piece 320 and the second connecting piece 330 through fasteners respectively, and the air inlet heat exchanger 300 and the auxiliary heat exchanger 310 are further fixed.

The exhaust heat exchanger 400 is provided with a third connecting piece 420 at both ends respectively, a second fixing piece 430 is provided above the third connecting piece 420, a second lap joint part extending downwards is formed at both ends of the second fixing piece 430 respectively, and the second lap joint parts are detachably connected to the third connecting piece 420 through fasteners respectively.

The first fixing piece 340 and the second fixing piece 430 are further used for being connected with the heat exchange bracket 800, specifically, a connection flanging extending towards the air inlet heat exchanger 300 and the air outlet heat exchanger 400 is formed on the heat exchange bracket 800, and the flanging is located above the first fixing piece 340 and the second fixing piece 430 to connect and fix the air inlet heat exchanger 300 and the auxiliary heat exchanger 310 on the heat exchange bracket 800.

Besides, the first connecting piece 320, the second connecting piece 330 and the third connecting piece 420 are formed with connecting holes in a dispersed manner, the positions of the connecting holes are matched with the positions of the refrigerant pipes in the corresponding air inlet heat exchanger 300, the auxiliary heat exchanger 310 or the air exhaust heat exchanger 400, and the refrigerant pipes in the heat exchangers pass through the corresponding connecting holes, so that the connection and fixation between the first connecting piece 320 and the air inlet heat exchanger 300, the connection between the first connecting piece 320 and the auxiliary heat exchanger 310 and the connection between the third heat exchanger and the air exhaust heat exchanger 400 can be realized.

Referring to fig. 7 again, a foaming member 440 is further disposed above the exhaust heat exchanger 400, and an upper cover plate of the outer case 100 is covered on the foaming member 440 for heat preservation of the exhaust heat exchanger 400, thereby reducing heat loss.

Referring to fig. 13 and 14, the compressor 500 and the heat exchanger block are connected by a refrigerant tube block, and in particular, the refrigerant tube block includes a first tube block 510 connected to the compressor 500 and a second tube block 520 connected to the heat exchanger block, an insertion section 530 is formed at an end of the second tube block 520, and an end of the first tube block 510 is inserted into the insertion section 530 and then welded at a junction of the first tube block 510 and the second tube block 520.

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

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. A fresh air conditioner, comprising:

total heat exchanger: the heat exchange type air conditioner comprises an outer shell, a heat exchange core body arranged in the outer shell, an air exhaust fan and an air supply fan;

refrigerant system: the air conditioner comprises a compressor, a four-way valve and a heat exchanger group which are connected together through a refrigerant pipeline, wherein the heat exchanger group comprises an exhaust heat exchanger, an air inlet heat exchanger and an auxiliary heat exchanger, and a water receiving disc is arranged below the heat exchanger group; an ice melting section is arranged below the exhaust heat exchanger, an ice melting pipe section is formed in the ice melting section, and at least part of the ice melting section extends into the water receiving disc;

the air exhaust heat exchanger is connected with a first valve port of the four-way valve, the other end of the air exhaust heat exchanger is connected with the auxiliary heat exchanger through a first refrigerant branch and connected with the ice melting section through a second refrigerant branch, the other end of the auxiliary heat exchanger is connected with the second refrigerant branch through a first refrigerant auxiliary path, the other end of the ice melting section is connected with the air inlet heat exchanger through a second refrigerant auxiliary path, and the other end of the air inlet heat exchanger is connected with a second valve port of the four-way valve.

2. The fresh air conditioner according to claim 1, wherein,

the input end of the compressor is connected with a third valve opening of the four-way valve, the output end of the compressor is connected with a fourth valve opening of the four-way valve, a first expansion valve is arranged on a first refrigerant branch path, a second expansion valve is arranged on a second refrigerant auxiliary path, and two ends of the first expansion valve and two ends of the second expansion valve are respectively connected with a filter.

3. The fresh air conditioner according to claim 2, wherein,

the second refrigerant branch is provided with a switch valve and a one-way valve, and the one-way valve is used for controlling the refrigerant to flow from the exhaust heat exchanger to the direction of the ice melting section through the switch valve.

4. The fresh air conditioner according to claim 2, wherein,

in a heating mode, the fourth valve port is communicated with the second valve port, the third valve port is communicated with the first valve port, the second expansion valve is in a full-open state, the air inlet heat exchanger and the auxiliary heat exchanger are used as condensers, and the air exhaust heat exchanger is used as an evaporator;

the refrigerant output from the compressor is input into the air inlet heat exchanger through the four-way valve, the refrigerant output after heat exchange of the air inlet heat exchanger is input into the auxiliary heat exchanger through the second expansion valve and the ice melting section, the ice melting section is used for heating condensed water in the water tray to prevent the condensed water from freezing, and the refrigerant output from the auxiliary heat exchanger is input back into the compressor through the air exhaust heat exchanger after passing through the first expansion valve.

5. The fresh air conditioner according to claim 3, wherein,

in a refrigeration mode, the fourth valve port is communicated with the first valve port, the third valve port is communicated with the second valve port, the switch valve is opened, the auxiliary heat exchanger is bypassed, the air inlet heat exchanger is an evaporator, and the air exhaust heat exchanger is a condenser;

the refrigerant output from the compressor flows into the exhaust heat exchanger through the four-way valve, the refrigerant output from the exhaust heat exchanger is directly input into the ice melting section from the second refrigerant branch, the ice melting section is used for cooling condensed water in the exhaust heat exchanger and the water receiving disc, and the refrigerant output from the ice melting section is returned to the compressor after heat exchange of the air inlet heat exchanger.

6. The fresh air conditioner according to claim 3, wherein,

in the cooling-free dehumidification mode, the fourth valve port is communicated with the first valve port, the third valve port is communicated with the second valve port, the switch valve is closed, and the first expansion valve is fully opened; the air exhaust heat exchanger and the auxiliary heat exchanger are used as condensers, and the air inlet heat exchanger is an evaporator;

the refrigerant output from the compressor flows into the exhaust heat exchanger through the four-way valve, the refrigerant output from the exhaust heat exchanger is input into the ice melting section through the auxiliary heat exchanger, the ice melting section is used for cooling condensed water in the exhaust heat exchanger and the water receiving disc, and the refrigerant output from the ice melting section is returned to the compressor after heat exchange of the air inlet heat exchanger.

7. The fresh air conditioner according to claim 2, wherein,

an outdoor air inlet, an outdoor air outlet, an indoor air supply outlet and an indoor air return outlet are formed on the outer shell;

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 outlet and the outdoor air exhaust outlet and used for conveying indoor polluted air; the air exhaust heat exchanger and the air inlet heat exchanger are longitudinally and fixedly connected to the heat exchange support, the air exhaust heat exchanger is arranged in the air exhaust channel, and the air inlet heat exchanger and the auxiliary heat exchanger are sequentially formed in the air inlet channel along the flowing direction of air flow.

8. The fresh air conditioner according to claim 2, wherein,

the water pan is located the below of heat exchanger group, including first water receiving area and second water receiving area, first water receiving area is located the air inlet heat exchanger below, the bottom surface height of first water receiving area is higher than the bottom surface height of second water receiving area, the air inlet heat exchanger with still be provided with the sealing member between the water pan, be formed with drainage channel on the sealing member, be used for with the comdenstion water in the first water receiving area is discharged to in the second water receiving area.

9. The fresh air conditioner according to claim 4, wherein,

the air inlet heat exchanger comprises an air inlet heat exchanger, and is characterized in that two ends of the air inlet heat exchanger are respectively connected with a first connecting piece, two ends of the auxiliary heat exchanger are respectively connected with a second connecting piece, a first connecting outer edge is formed on the first connecting piece, a second connecting outer edge is formed on the second connecting piece, at least one first clamping part is formed on the first connecting outer edge, a second clamping part matched with each first clamping part in position is formed on the second connecting outer edge, and in an installation state, the first clamping part is connected with the second clamping part.

10. The air conditioner according to claim 7, wherein,

the outer shell is provided with an outdoor air inlet area communicated with the outdoor air inlet, an outdoor air exhaust area communicated with the outdoor air outlet, an indoor air supply area communicated with the indoor air supply opening and an indoor air return area communicated with the indoor air return opening;

the outdoor air exhaust area is connected with the indoor air supply area through the refrigerant pipe group, the refrigerant pipe group comprises a first pipe group connected with the compressor and a second pipe group connected with the heat exchanger group, an inserting section is formed at the end part of the second pipe group, and the end part of the first pipe group is inserted into the inserting section.