CN220250163U - Fresh air conditioner - Google Patents

Abstract

The utility model relates to the technical field of air conditioners, and particularly discloses a fresh air conditioner which comprises an outer shell and a heat exchange core body, wherein an installation inner cavity is formed in the outer shell, and the installation inner cavity is formed by surrounding an upper cover plate, a lower cover plate and a peripheral side plate positioned between the upper cover plate and the lower cover plate; the heat exchange core body is detachably connected in the installation cavity; the lower cover plate is provided with an access hole, the access hole is detachably connected with the access hole, and the access hole is positioned right below the heat exchange core body and is communicated with an outdoor air inlet area and an indoor air return area at two sides of the heat exchange core body; in the actual overhaul process, the overhaul port can be used for overhauling the heat exchange core body and overhauling working parts in the outdoor air inlet area and the indoor air return area at two sides; the number of the access holes is obviously reduced, assembly and processing cost is saved, and the influence of the structural strength of the outer shell is small.

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, combines an air purification function, has the effects of dehumidification, humidification and the like, is better in user experience, and is convenient to overhaul the internal working parts of the fresh air conditioner, an overhaul port is usually required to be formed in the outer shell of the corresponding working parts, so that the overhaul port is formed in a plurality of positions, the overall structural strength of the outer shell is affected, and in the actual production and assembly process, the production cost and the assembly cost are both higher.

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 solves the problems of excessive number of overhauling holes formed on an outer shell, reduced structural strength of the outer shell, higher production and assembly cost, high labor intensity of operators and the like in the prior art.

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

the utility model provides a fresh air conditioner, which comprises:

the shell is internally provided with an installation cavity, and the installation cavity is formed by surrounding an upper cover plate, a lower cover plate and a peripheral side plate positioned between the upper cover plate and the lower cover plate; the installation cavity comprises an outdoor air inlet area, an outdoor air exhaust area, an indoor air supply area and an indoor return air area;

the heat exchange core is positioned between the outdoor air inlet area and the indoor return air area and is detachably connected in the installation inner cavity;

the heat exchange device comprises a heat exchange core body, and is characterized in that an overhaul port is arranged on the lower cover plate, the overhaul port is detachably connected with the overhaul cover plate, and the overhaul port is located right below the heat exchange core body and communicated with an outdoor air inlet area and an indoor air return area on two sides of the heat exchange core body.

In some embodiments of the present application, the access opening is formed with a connection edge recessed toward the direction of the installation cavity, the access panel is detachably connected to the connection edge through a fastener, the connection edge is formed at least on two opposite edges of the access opening, the connection edge is formed with a sealing layer, and in the installation state, the outer surface of the lower panel is flush with the outer surface of the access panel.

In some embodiments of the present application, the access opening is formed with a flange extending toward the direction of the installation cavity, and a protective layer is formed on one side of the flange, which is close to the access opening, and the protective layer is made of a rubber layer or a fleece layer.

In some embodiments of the present application, a cover flange extending towards the direction of the installation cavity is further formed on the access cover, the cover flange is matched with the position of the flanging, and the tail end of each cover flange is formed with a bending extending relatively, so that damage to the protective layer in the installation process of the access cover is avoided.

In some embodiments of the present application, a hemming opening is formed on each hemming of the cover plate, a core sealing portion is further installed between the service cover plate and the heat exchange core, and two ends of the core sealing portion extend to the outer sides of the hemming openings respectively.

In some embodiments of the present application, the heat exchange core is detachably connected in the installation cavity through a support assembly, the support assembly comprises a fixed support member and a movable support member which are oppositely arranged along a first direction, support positions are formed on the fixed support member and the movable support member, and two sides of the heat exchange core extend into the support positions respectively.

In some embodiments of the present application, the heat exchange core includes at least two core units arranged along a direction perpendicular to the first direction, the support positions are opening structures gradually expanding towards the core units, and two opposite edges of each core unit are respectively supported in the support positions on the fixed support member and the movable support member.

In some embodiments of the present application, the fixing support comprises an upper fixing support and a lower fixing support, an upper flanging is formed on the upper fixing support, a lower flanging is formed on the lower fixing support, and the support is located between the upper flanging and the lower flanging.

In some embodiments of the present application, the movable support comprises an upper movable support and a lower movable support, the lower movable support comprises a detachable support and a lower support, and the length of the detachable support is not less than the length of any one of the core units; the upper movable support is provided with an upward inclined flanging, the lower movable support is provided with a downward inclined flanging, and the support is positioned between the upward flanging and the downward flanging.

In some embodiments of the present application, a through routing hole is formed on the movable support and/or the fixed support, and a sealing plug may be disposed in the routing hole.

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

the overhaul port of the fresh air conditioner is positioned on the lower cover plate, is particularly positioned under the heat exchange core body and is communicated with the outdoor air inlet area and the indoor air return area, so that in the actual overhaul process, the heat exchange core body can be overhauled through the overhaul port, and working parts in the outdoor air inlet area and the indoor air return area at two sides can be overhauled; the number of the overhaul holes is obviously reduced, so that the assembly and processing cost is saved, and the influence of the structural strength of the outer shell is small;

in addition, the inner overhaul port on the heat exchange support is combined, so that working components such as a compressor and a refrigerant pipeline positioned on the opposite side of the heat exchange support can be overhauled, and the universality is strong.

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 a schematic view of an internal structure of a fresh air conditioner according to an embodiment;

FIG. 2 is a schematic diagram of an upper cover plate split according to an embodiment;

FIG. 3 is a schematic view of an access port location according to an embodiment;

FIG. 4 is a schematic view of an access panel disassembly according to an embodiment;

FIG. 5 is a schematic view of a heat exchange core disassembly according to an embodiment;

FIG. 6 is a schematic view of a lower cover plate structure according to an embodiment;

FIG. 7 is a schematic view of the location of the flange on the lower cover plate according to an embodiment;

FIG. 8 is a schematic view of an access panel detached from a core seal according to an embodiment;

FIG. 9 is a schematic illustration of the relative positioning of an access panel and a heat exchange core;

FIG. 10 is a schematic view of a heat exchange core installation;

FIG. 11 is a schematic view of a support assembly;

FIG. 12 is a schematic view of a fixed support disassembled;

FIG. 13 is a schematic view of the moveable support in an exploded view;

FIG. 14 is a schematic view of the detachable stand in a detached state;

FIG. 15 is a schematic view of a heat exchange bracket position;

FIG. 16 is a schematic view of a heat exchange bracket structure;

FIG. 17 is a schematic view of an inner access panel construction;

FIG. 18 is a schematic view of a bridge assembly position;

FIG. 19 is a schematic view of a bridge assembly;

FIG. 20 is a schematic diagram of a bridge assembly disassembled;

reference numerals:

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;

110. an upper cover plate;

120. a peripheral plate;

130. a lower cover plate; 131. an access opening; 1311. a connecting edge; 1312. flanging;

140. an access panel; 141. hemming the cover plate; 142. hemming the notch;

150. a core sealing portion;

200. a heat exchange core; 201. a support position;

210. a first core unit;

220. a second core unit;

230. a fixed support; 231. an upper fixing bracket; 232. a lower fixing bracket;

240. a movable support; 241. an upper movable bracket; 242. a lower support frame; 243. a detachable support;

250. a wiring hole;

260. a lower flanging is carried out;

270. up-flanging;

280. a bridge assembly;

281. wire slot supporting plates; 2811. a lower turning plate;

282. a trunking cover plate; 2821. an upper turning plate;

283. a middle bridge; 2831. a bottom plate; 2832. a vertical plate; 2833. connecting and flanging;

284. wiring notch;

285. a seal;

300. an air inlet heat exchanger;

400. an exhaust heat exchanger;

500. a compressor;

600. an air inlet fan;

700. an exhaust fan;

800. a heat exchange bracket; 801. an inner access port;

810. an inner access panel; 811. the imaginary part of threading; 812. a hand-held part;

900. a wire clamp;

1000. and (5) sealing plugs.

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 a four-way valve 810, which is specifically referred to the conventional air conditioner, and will not be 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 core 200 in the fresh air conditioner can be an efficient and energy-saving heat recovery device, and the introduced fresh air is preheated or precooled by recovering the waste heat in the exhaust gas, so that the enthalpy value of the fresh air is reduced or increased before the fresh air is subjected to heat-humidity treatment. The system load is effectively reduced, the energy consumption and the operation 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.

Because each working part in the fresh air conditioner needs to be overhauled in the actual working process, an overhauling hole 131 is generally needed to be reserved on the fresh air conditioner, and in the traditional mode, the overhauling hole 131 needs to be correspondingly reserved at the corresponding positions of the working parts such as the compressor 500, the heat exchange core 200 and the heat exchanger, so that the number of the overhauling holes 131 on the fresh air conditioner is excessive, and the integral structural strength of the fresh air conditioner is affected.

The utility model relates to a fresh air conditioner is equipped with including shell body 100, shell body 100 includes upper cover plate 110, lower apron 130 and is located the week curb plate 120 between upper cover plate 110 and the lower apron 130, and upper cover plate 110 is used for being connected with the building roof, with fresh air conditioner whole articulates in the building, and lower apron 130 is located the below of fresh air conditioner, and access hole 131 sets up on lower apron 130, makes things convenient for operating personnel to overhaul.

An outdoor air inlet 101, an outdoor air outlet 102, an indoor air supply outlet 103 and an indoor air return outlet 104 are formed on the peripheral plate 120; an air supply channel is formed between the outdoor air inlet 101 and the indoor air supply outlet 103, and an air exhaust channel is formed between the indoor air return outlet 104 and the outdoor air outlet 102.

The upper cover plate 110, the lower cover plate 130 and the peripheral side plate 120 are surrounded to form an installation cavity, 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 peripheral side plate 120 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 transverse barrier, the outer shell and the longitudinal barrier divide the installation cavity into an indoor air supply area 1031 and an outdoor air exhaust area 1021 respectively, the indoor air supply area 1031 is communicated with the indoor air supply opening 103, and the indoor air supply area 1031 is communicated with the outdoor air exhaust opening 102.

The longitudinal baffle, the outer shell 100 and the heat exchange core 200 divide the installation cavity into an indoor return air area 1041 and an outdoor air inlet area 1011, the indoor return air area 1041 is communicated with the indoor return air inlet 104, and the outdoor air inlet area 1011 is communicated with the outdoor air inlet 101.

An exhaust fan 700 is installed in the outdoor exhaust area 1021, an air inlet fan 600 is arranged in the indoor air supply area 1031, the air inlet fan 600 is started to drive outdoor air flow to be conveyed into a room through an air inlet channel, and the exhaust fan 700 is started to drive indoor air flow to be output to the outside through an exhaust air channel.

Referring to fig. 3 to 9, an access cover plate 140 is detachably connected to the access hole 131, for closing the access hole 131, in order to reduce the number of the access holes 131 and improve the structural strength of the outer case 100, the access hole 131 is located directly under the heat exchange core 200 and is communicated with the outdoor air inlet area 1011 and the indoor air return area 1041 at both sides of the heat exchange core 200.

The service hole 131 can be used as a service window of the heat exchange core 200, and simultaneously, the service positions of part of working components in the outdoor air inlet area 1011 and the indoor air return area 1041 are satisfied.

Referring specifically to fig. 6 and 7, for convenient processing and installation, the access port 131 and the access panel 140 are both square structures, and opposite edges of the access port 131 are provided with a connecting edge 1311 recessed toward the direction of the installation cavity, and the connecting edge 1311 is used for directly overlapping the access panel 140 and is fixed by fasteners.

The corresponding positions of the connecting edge 1311 and the access cover are provided with through holes, and the access cover is detachably connected to the connecting edge 1311 through fasteners.

The connecting edge 1311 is formed at least on two opposite edges of the access hole 131, the connecting edge 1311 and the lower cover plate 130 are integrally formed, and in the installation state, the outer surface of the lower cover plate 130 is flush with the outer surface of the access cover plate 140, so that the surface of the fresh air conditioner is smooth and attractive.

Of course, the access port 131 and the access cover plate 140 may have other shapes, and are not limited to the square shape as mentioned above, as long as it is satisfied that the heat exchange core 200 is detachable from the access port 131 and communicates with the outdoor air intake area 1011 and the indoor air return area 1041 at both sides of the heat exchange core 200.

In order to improve the sealability of the connection between the access panel 140 and the access port 131, a sealing layer is formed at the upper surface of the connection edge 1311.

Because the heat exchange core 200 needs to be disassembled from the position of the overhaul hole 131 for overhaul, in order to avoid the scratch of the heat exchange core 200 by the sharp inner edge on the periphery of the overhaul hole 131, the service life of the heat exchange core 200 is influenced, correspondingly, the edge of the overhaul hole 131, which is in contact with the heat exchange core 200, is provided with a flanging 1312 extending upwards, and one side, close to the overhaul hole 131, of the flanging 1312 is provided with a protective layer which is used for protecting the heat exchange core 200 in the assembling and disassembling process.

The material of the protective layer is a rubber layer (EPDM layer, etc.) or a fleece layer, reducing damage to the heat exchange core 200.

Referring to fig. 7-9, two side edges corresponding to the flange 1312 of the access panel 140 are respectively formed with a cover flange 141 extending toward the direction of the installation cavity, in order to prevent the cover flange 141 from damaging the protective layer on the flange 1312 during the installation process of the access panel 140, the end of each cover flange 141 is formed with a bend extending relatively, and the bend turns inwards over, so that the smooth transition position on the cover flange 141 is in contact with the protective layer during the installation process of the access panel 140, and the protective layer is prevented from being damaged during the installation process of the access panel 140.

In fig. 9, referring to fig. 15, since an installation gap is formed between the service cover plate 140 and the heat exchange core 200 in an actual installation state, the generation of the installation gap may affect the sealing between the outdoor air inlet area and the indoor return air area at both sides of the heat exchange core 200.

In order to solve the above problems, a bead opening 142 is formed on each cover bead 141, a core sealing part 150 is further installed between the service cover 140 and the heat exchange core 200, and both ends of the core sealing part 150 extend to the outside of the bead opening 142, respectively, to seal between the outdoor air inlet area and the indoor return area.

Referring to fig. 10 and 11, the heat exchange core 200 is detachably connected to the inner cavity through a support assembly, specifically, two sides of the heat exchange core 200 are respectively close to the space between the outdoor air inlet 1011 and the indoor air return 1041, and two ends of the heat exchange core 200 are respectively connected to the inner wall of the outer casing 100 and the heat exchange bracket 800.

The heat exchange bracket 800 is used for fixing the exhaust heat exchanger 400 and the intake heat exchanger 300, the heat exchange bracket 800 penetrates through the whole installation cavity, and two ends of the heat exchange bracket are respectively connected to the peripheral plates 120 at two ends of the outer shell 100.

Defining the extending direction of the heat exchange bracket 800 as the first direction, the support assembly includes a fixed support 230 and a movable support 240 which are oppositely arranged along the first direction, the fixed support 230 and the movable support 240 are arranged in parallel, the fixed support 230 and the movable support 240 are respectively formed with a support position 201, two sides of the heat exchange core 200 extend into the support positions 201 respectively, and the shape of the support positions 201 is matched with the shape of two sides of the heat exchange core 200.

In some embodiments of the present application, tapered edges are formed on two sides of the heat exchange core 200, the corresponding support positions 201 are also open structures gradually expanding towards the heat exchange core 200, and two sides of the heat exchange core 200 are inserted into the support positions 201 to fix the whole heat exchange core 200.

The heat exchange core 200 may be polygonal prism or other shapes, so long as the heat exchange function of vertical placement of the characteristic section can be achieved, and in addition, operations such as simple chamfering on the basis of polygonal prism are all within the scope of the present application.

To reduce the size of the service port, and facilitate disassembly, in some embodiments of the present application, the heat exchange core 200 is designed to include at least two core units arranged along a direction perpendicular to the first direction, and end surfaces of the core units are in direct contact to form one heat exchange core 200 as a whole.

Then, the width of the access hole 131 along the first direction is not necessarily designed to be greater than the length of the heat exchange core 200 along the first direction, and only the length of any one of the core units needs to be ensured, so that each core unit is detached respectively in the actual detachment process, which is favorable for reducing the size of the access hole 131, improving the structural strength of the outer shell 100 and reducing the detachment difficulty.

Referring to fig. 12 to 14, since the core unit is removed from the bottom to the outside at the time of disassembly, the fixed support 230 and the movable support 240 are respectively designed as upper and lower components, that is, the fixed support 230 includes the upper fixed bracket 231 and the lower fixed bracket 232, and the movable support 240 includes the upper movable bracket 241 and the lower movable bracket.

The upper fixing bracket 231 and the lower fixing bracket 232 are spliced up and down, an upward flanging 270 is formed on the upper fixing bracket 231, a downward flanging 260 is formed on the lower fixing bracket 232, and a gradually expanding supporting position 201 is formed between the upward flanging 270 and the downward flanging 260.

The upper movable bracket 241 is formed with an upper flange 270 inclined upward, and the lower movable bracket is formed with a lower flange 260 inclined downward, and the support position 201 of the movable support 240 is located between the upper flange 270 and the lower flange 260.

The movable support 240 needs to be partially removed during the actual overhaul process, specifically, the lower movable support is partially removed to realize that the core unit moves out of the installation cavity downwards.

The lower movable bracket comprises a detachable bracket 243 and a lower supporting bracket 242, the length of the detachable bracket 243 is not less than that of any core unit, when in maintenance, the detachable bracket 243 is detached from the upper fixed bracket 231, and after being taken out from a maintenance port, each core unit can be detached from the detachable position formed after the detachable bracket 243 is detached one by one.

Because many working parts such as electrical boxes need to be externally connected with many wire harnesses in the actual operation process of the fresh air conditioner, in order to facilitate connection of the wire harnesses, a penetrating wire routing hole 250 is formed in the movable support 240 and/or the fixed support 230, the wire harnesses pass through the wire routing hole 250 up and down, further, a sealing plug 1000 can be arranged in the wire routing hole 250, a penetrating wire passing channel is formed in the sealing plug 1000, the sealing plug 1000 is made of rubber materials, and certain sealing elasticity is provided, so that the wire harnesses can pass through the wire routing channel and simultaneously the sealing of the periphery of the wire harnesses is ensured.

The wire clamps 900 are further arranged on the fixed support member 230 and the movable support member 240, and the wire clamps 900 can fix the passing wire harness in a clamping or winding fixing mode, so that the connection uniformity of the wire harness is improved.

The detachable bracket 243 is located at an end far from the heat exchange bracket 800, that is, an end near the peripheral plate 120, taking the heat exchange core 200 including the first core unit 210 and the second core unit 220 as an example, in the actual detachment process, after the detachable bracket 243 is detached, the first core unit 210 far from the heat exchange bracket 800 is first detached from the access hole 131, then the second core unit 220 near the heat exchange bracket 800 is moved to a corresponding position of the first core unit 210 along the supporting position 201, and then is detached from the access hole 131.

In this embodiment, according to the actual loading and unloading position of the heat exchange core 200, the position of the flange 1312 and the position of the protection layer may be disposed on the side parallel to the heat exchange bracket 800 and far from the access hole 131 of the heat exchange bracket 800.

After the heat exchange core 200 is disassembled, an operator can directly overhaul working components such as an air valve assembly, an electric box and the like in the indoor air return area 1041 and the outdoor air inlet area 1011 beside the heat exchange core 200 through the overhaul port 131.

Referring to fig. 15, a heat exchange bracket 800 penetrating through the installation cavity is used to fix the air intake heat exchanger 300 and the air exhaust heat exchanger 400, the air intake heat exchanger 300 and the air exhaust heat exchanger 400 are previously fixed at one side of the heat exchange bracket 800, and the movable support 240 and the fixed support 230 are fixed at the other side of the heat exchange bracket 800.

Referring to fig. 16, an inner access hole 801 is formed in the heat exchange bracket 800, the inner access hole 801 is located between the exhaust air heat exchanger 400 and the intake air heat exchanger 300, and when the heat exchange core 200 is detached from the access hole 131, a serviceman can repair a working part located at the other side of the heat exchange bracket 800 through the inner access hole 801.

Specifically, the compressor 500 is installed between the exhaust heat exchanger 400 and the intake heat exchanger 300, and the maintenance of the compressor 500 may be performed through the inner maintenance hole 801, and thus, a maintenance location for maintaining the compressor 500 may be omitted on the lower cover plate 130.

Specifically, an inner access panel 810 is detachably connected to the inner access opening 801, and the inner access opening 801 is detachably connected to the inner access panel 810 by fasteners, similar to the lower cover panel 130.

Referring to fig. 17, in order to facilitate the disassembly of the inner access panel by an operator, a hand-held portion 812 bent toward the heat exchange core 200 is further formed on the inner access panel, and the inner access panel is disassembled by the operator through the hand-held portion 812 when the inner access panel is disassembled.

The inner access panel 810 is formed with a threading part, which is a threading imaginary part 811 or a threading hole, and the threading hole is provided with a sealing plug 1000.

Similar to the sealing plug 1000 in the wiring hole 250, the sealing plug 1000 on the threading part is also formed with a threading channel penetrating through, the sealing plug 1000 is made of rubber material and has a certain sealing elasticity, and then the wire harness can pass through the wire harness channel and simultaneously ensure the sealing of the periphery of the wire harness.

When the threading portion is the threading imaginary part 811, the threading imaginary part 811 can be knocked down in the maintenance, the wire harness after maintenance passes through the position, the threading imaginary part 811 after knocking down also forms a threading hole structure, and in the actual maintenance process, the sealing plug 1000 is also configured for the threading portion, and the tightness of the threading portion after the wire harness passes through is improved.

Referring to fig. 18 and 19, since many working components in the fresh air conditioner require an external wire harness to provide signal or power transmission thereto, a bridge assembly 280 for passing the wire harness is further provided between the upper cover plate 110 and the heat exchange core 200 in order to more standardize the layout of the wire harness.

A portion of the wire harness in the mounting cavity passes through the bridge assembly 280 and is connected to the outside.

Both ends of the bridge assembly 280 are respectively connected to the outer housing 100 and the heat exchange bracket 800, a threading channel is formed on the bridge assembly 280, and the wire harness passes through the threading channel and is connected to the corresponding working part in the installation cavity.

Referring to fig. 20, in particular, the bridge assembly 280 includes a wire groove support plate 281 and a wire groove cover plate 282 detachably connected, a threading passage is formed between the wire groove support plate 281 and the wire groove cover plate 282, and a plurality of wire clamps 900 are formed in a dispersed manner in the threading passage for fixing the wire harness.

Because in the maintenance process, the wire slot supporting plate 281 positioned at the lower side needs to be dismantled, the wire harness is prevented from falling after the wire slot supporting plate 281 is dismantled for convenient disassembly and maintenance, a middle bridge 283 is further arranged between the wire slot supporting plate 281 and the wire slot cover plate 282, and the connection between the bridge assembly 280 and the outer shell 100 and the heat exchange bracket 800 is realized through the middle bridge 283.

The middle bridge 283 includes a base 2831 contacting the wire slot supporting plate 281 and a plurality of vertical plates 2832 formed at both sides of the base 2831, and a gap is formed between the adjacent vertical plates 2832 to facilitate the wire harness to be connected out from the corresponding gap.

The two ends of the bottom plate 2831, which are in contact with the outer shell 100 and the heat exchange bracket 800, are respectively formed with a connection flange 2833, and the connection flanges 2833 are detachably connected to the outer shell 100 and the heat exchange bracket 800 through fasteners.

A plurality of maintenance ports are formed in the base plate 2831 in a scattered mode, and an operator can conveniently overhaul the wire harness from a position below the maintenance ports.

The slot supporting plate 281 is clamped below the middle bridge 283, specifically, a plurality of lower turning plates 2811 extending upwards are formed on the slot supporting plate 281, and the lower turning plates 2811 are clamped outside the vertical plate 2832 of the middle bridge 283.

The trunking cover plate 282 is formed with a plurality of upper turning plates 2821 that extend downwards, and similarly, upper turning plates 2821 are respectively clamped outside the vertical plates 2832 of the middle bridge 283, and then, the height of the vertical plates 2832 is at least greater than the sum of the heights of the upper turning plates 2821 and the lower turning plates 2811, so that the interference of the upper turning plates 2821 and the lower turning plates 2811 is avoided.

A routing notch 284 is formed between adjacent lower flaps 2811, similar to the routing notch 284 on the riser 2832, for the harness to pass through.

In other embodiments of the present application, the vertical plate 2832 of the middle bridge 283 is detachably connected with the slot cover plate 282 through a fastener, so as to improve the stability of connection, in this embodiment state, the lower flap 2811 of the slot cover plate 282 can be tightly clamped with the middle bridge 283, and also can be directly tightly clamped with the upper flap 2821 on the slot cover plate 282, at this time, the height of the vertical plate 2832 is smaller than the sum of the heights of the upper flap 2821 and the lower flap 2811, so that the lower flap 2811 can be ensured to be clamped outside the upper flap 2821.

In order to prevent air flow between the outdoor air inlet region 1011 and the indoor air return region 1041 from passing through the bridge assembly 280, a sealing element 285 is arranged between the middle bridge 283 and the wire slot cover plate 282, and the sealing element 285 extends along the length direction of the middle bridge 283 to isolate the outdoor air inlet region 1011 from the indoor air return region 1041, thereby improving the sealing effect.

When the heat exchange core 200 is installed for the first time, after the heat exchange core 200 is installed, the wire groove supporting plate 281 is placed on the upper surface of the heat exchange core 200, then the middle bridge frame 283 is placed on the wire groove supporting plate 281, the lower turning plates 2811 beside the wire groove supporting plate 281 are tightly matched and clamped on the outer side of the middle bridge frame 283, the connection flanges 2833 at the two ends of the middle bridge frame 283 are respectively fixed between heat exchange and on the outer shell 100, then a wire harness is connected to each working part of an installation cavity from the middle of the middle bridge frame 283, after wiring is completed, the wire groove cover plate 282 is covered on the middle bridge frame 283, and finally the upper cover plate 110 is covered on the surface.

When the heat exchange core 200 is overhauled, after the heat exchange core 200 is disassembled, an operator removes the wire groove supporting plate 281 which is in direct contact with the heat exchange core 200 from the position of the overhauling hole 131 from the middle bridge 283, then overhauls the corresponding wire harness from the repairing hole of the middle bridge 283, in the overhauling process, as part of the wire harness is separated from the threading channel and is difficult to access again, the corresponding part of the wire harness can be accessed into the corresponding working part from the threading part on the heat exchange bracket 800, and after the wire harness overhauling is completed, the wire groove supporting plate 281 is clamped below the middle bridge 283.

The bridge assembly 280 is convenient to maintain except that the wire harness is more regular, the maintenance efficiency is greatly improved, the wire harness passes through the threading channel, direct contact between the wire harness and the heat exchange core 200 is reduced, heat insulation is facilitated, the service life is prolonged, and the safety is greatly improved.

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:

the shell is internally provided with an installation cavity, and the installation cavity is formed by surrounding an upper cover plate, a lower cover plate and a peripheral side plate positioned between the upper cover plate and the lower cover plate; the installation cavity comprises an outdoor air inlet area, an outdoor air exhaust area, an indoor air supply area and an indoor return air area;

the heat exchange core is positioned between the outdoor air inlet area and the indoor return air area and is detachably connected in the installation inner cavity;

the heat exchange device comprises a heat exchange core body, and is characterized in that an overhaul port is arranged on the lower cover plate, the overhaul port is detachably connected with the overhaul cover plate, and the overhaul port is located right below the heat exchange core body and communicated with an outdoor air inlet area and an indoor air return area on two sides of the heat exchange core body.

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

the maintenance opening is provided with a connecting edge which is sunken towards the direction of the installation cavity, the maintenance cover plate is detachably connected to the connecting edge through a fastener, the connecting edge is at least formed on two opposite edges of the maintenance opening, the connecting edge is provided with a sealing layer, and in the installation state, the outer surface of the lower cover plate is flush with the outer surface of the maintenance cover plate.

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

the flange extending towards the direction of the installation cavity is formed on the access hole, a protective layer is formed on one side, close to the access hole, of the flange, and the protective layer is made of a rubber layer or a velvet layer.

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

the maintenance cover plate is further provided with cover plate curled edges extending towards the direction of the installation cavity, the cover plate curled edges are matched with the position of the flanging, the tail ends of the cover plate curled edges are provided with bending extending relatively, and damage to the protective layer in the installation process of the maintenance cover plate is avoided.

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

and a hemming opening is formed on each cover plate hemming, a core sealing part is further arranged between the overhaul cover plate and the heat exchange core, and two ends of the core sealing part extend to the outer sides of the hemming openings respectively.

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

the heat exchange core body is detachably connected in the installation cavity through the support component, the support component comprises a fixed support piece and a movable support piece which are oppositely arranged along a first direction, support positions are formed on the fixed support piece and the movable support piece, and two sides of the heat exchange core body extend into the support positions respectively.

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

the heat exchange core comprises at least two core units which are arranged along the direction perpendicular to the first direction, the supporting positions are of opening structures which are gradually expanded towards the core units, and two opposite edges of each core unit are respectively supported in the supporting positions on the fixed supporting piece and the movable supporting piece.

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

the fixed support comprises an upper fixed support and a lower fixed support, an upward inclined flanging is formed on the upper fixed support, a downward inclined flanging is formed on the lower fixed support, and the support is located between the upward flanging and the downward flanging.

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

the movable support piece comprises an upper movable support and a lower movable support, the lower movable support comprises a detachable support and a lower support frame, and the length of the detachable support is not smaller than that of any core unit; the upper movable support is provided with an upward inclined flanging, the lower movable support is provided with a downward inclined flanging, and the support is positioned between the upward flanging and the downward flanging.

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

the movable support piece and/or the fixed support piece are/is provided with a penetrating wiring hole, and a sealing plug can be arranged in the wiring hole.