Direct expansion type air conditioning unit

Abstract

The utility model relates to the technical field of air treatment, and discloses a direct expansion type air conditioning unit which comprises a refrigeration cycle system, and the refrigeration cycle system comprises a compressor, a condenser, an expansion valve and an evaporator. The cold supply and air supply module comprises a first shell, an evaporator and an air supply fan, and the evaporator and the air supply fan are arranged in the first shell; an air outlet and an air return opening are formed in the first shell; the compressor module comprises a second shell, a condenser and a compressor, wherein the condenser and the compressor are arranged in the second shell. The cold and air supply module and the compressor module can be stacked up and down or separately placed; and the refrigeration pipeline connected with the cold supply and air supply module and the refrigeration pipeline connected with the compressor module are fixedly connected outside the first shell and the second shell. According to the expansion type air conditioning unit, modular design is adopted, integrated installation can be achieved, split installation can also be achieved, and flexible configuration can be achieved according to actual application scenes; meanwhile, the unit can select an integral or split supply mode; and the production line can realize sub-line body production, so that the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air treatment, in particular to a direct expansion air conditioning unit. Background Art

[0002] In the current field of air conditioning technology, direct expansion units (direct expansion air conditioning units) as an important refrigeration equipment have been widely used in various occasions, including but not limited to commercial buildings, industrial facilities and public transportation facilities such as subways. The core feature of the direct expansion unit is that the unit itself integrates a compressor, and the liquid refrigerant directly evaporates (expands) in the evaporator coil. Through this physical process, the heat of the air outside the coil is absorbed, thereby achieving a cooling effect.

[0003] Direct expansion units usually include various forms of air conditioning products, such as ceiling air conditioners, cabinet air conditioners, etc. In subway construction, due to space limitations and special environmental requirements, direct expansion units are often designed as integral structures and installed in specific machine rooms to ensure stable and reliable cooling effects. However, in actual applications, in some cases, due to limited machine room space or limited transportation routes, direct expansion units may not be installed properly.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In response to the problems pointed out in the background technology, the present application provides a direct expansion air-conditioning unit with a modular design. The cooling and air supply module and the compressor module can be installed in an integrated manner or separately, and can be flexibly configured according to the actual application scenario. At the same time, the unit can choose the overall or separate supply method to reduce logistics costs. The production line can also be divided into modules to realize split-line production and improve production efficiency.

[0006] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:

[0007] In some embodiments of the present application, a direct expansion air conditioning unit is provided, comprising:

[0008] A refrigeration cycle system, the refrigeration cycle system comprising a compressor, a condenser, an expansion valve and an evaporator connected in sequence by a refrigeration pipeline;

[0009] The direct expansion air conditioning unit also includes:

[0010] A cooling air supply module, the cooling air supply module comprising a first shell, an evaporator and an air supply fan arranged in the first shell; an air outlet and an air return port are arranged on the first shell; the air supply fan is used to drive air to enter from the air return port and be sent out from the air outlet after being cooled by the evaporator;

[0011] A compressor module, the compressor module comprising a second shell, the condenser and the compressor arranged in the second shell;

[0012] The cooling air supply module and the compressor module can be stacked up and down or placed separately; the refrigeration pipeline connecting the cooling air supply module and the refrigeration pipeline connecting the compressor module are connected and fixed outside the first shell and the second shell.

[0013] The direct expansion air-conditioning unit adopts a modular design. The cooling and air supply modules and the compressor modules can be flexibly configured according to the actual application scenarios. They can be installed in an integrated or split manner.

[0014] In some embodiments of the present application, the first shell includes a first frame and a first box plate connected to the first frame, and the first box plate is a heat preservation plate. The heat preservation plate not only has good heat preservation performance, effectively reduces internal and external heat exchange, reduces energy loss, but also has excellent sound insulation effect, reducing noise interference when the air conditioner is running.

[0015] In some embodiments of the present application, the second housing includes a second frame, a second box plate connected to the second frame, and the second box plate is a sheet metal component. The sheet metal component is conducive to heat dissipation of the compressor module, and has low production cost and a firm structure.

[0016] In some embodiments of the present application, part of the second box panels or all of the second box panels of the second housing are detachably connected to the second frame. The second box panels are freely detachable, which is convenient for disassembly and maintenance.

[0017] In some embodiments of the present application, the four corners of the second frame are provided with edging pieces, and the edging pieces are flush with the second box board. The edging design not only enhances the overall stability of the frame, but also improves the visual appearance of the entire frame.

[0018] In some embodiments of the present application, the cooling air supply module is arranged on the upper side of the compressor module; the air outlet is opened at the top of the first shell, the air supply fan is arranged on the lower side of the air outlet, the evaporator is arranged on the lower side of the air supply fan, and the return air outlet is arranged on the first shell on one side of the evaporator.

[0019] In some embodiments of the present application, the condenser is a plate heat exchanger or a shell and tube heat exchanger, and the water inlet pipe and the water outlet pipe of the condenser extend out of the second shell.

[0020] In some embodiments of the present application, a first through hole is opened on the side of the first shell for passing the refrigeration pipeline of the cooling air supply module; a second through hole is opened on the side of the second shell for passing the refrigeration pipeline of the compressor module; according to the setting position of the cooling air supply module and the compressor module, the refrigeration pipeline of the cooling air supply module is connected with the refrigeration pipeline of the compressor module through a connecting pipeline.

[0021] In some embodiments of the present application, the length and width of the first shell of the cooling and air supply module are respectively equal to the length and width of the second shell of the compressor module, and the integrity of the appearance is ensured when they are stacked up and down.

[0022] In some embodiments of the present application, the first frame is a rectangular frame structure, and the first frame is connected by connecting tees at corners and frame profiles, thereby ensuring the stability and strength of the structure.

[0023] Compared with the prior art, the advantages and positive effects of the utility model are:

[0024] In the above embodiment, the direct expansion air-conditioning unit adopts a modular design. The cooling and air supply modules and the compressor module can be flexibly configured according to the actual application scenario. They can be installed in an integrated manner to adapt to spacious spaces, or installed in separate parts, which are suitable for narrow or structurally restricted areas, greatly broadening the scope of application. At the same time, the unit can choose to be supplied in an integrated or separate manner, effectively avoiding transportation obstacles and reducing logistics costs and risks. In addition, the production line can be divided into modules to realize separate line production, optimize the production process, and improve production efficiency.

[0025] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 The structure of the direct expansion air conditioning unit according to some embodiments is shown. Figure 1 ;

[0028] Figure 2 A schematic diagram of the internal structure of a direct expansion air conditioning unit according to some embodiments is shown;

[0029] Figure 3 The structure of the direct expansion air conditioning unit according to some embodiments is shown. Figure 2 ;

[0030] Figure 4 A schematic diagram of a structure in which a direct expansion air conditioning unit is installed up and down according to some embodiments is shown;

[0031] Figure 5 A schematic diagram of the structure of a cooling and air supply module in a direct expansion air conditioning unit according to some embodiments is shown;

[0032] Figure 6 A schematic diagram showing the internal structure of a cooling and air supply module in a direct expansion air conditioning unit according to some embodiments is shown;

[0033] Figure 7 A schematic structural diagram of a compressor module in a direct expansion air conditioning unit according to some embodiments is shown;

[0034] Figure 8 The internal structure of the compressor module in the direct expansion air conditioning unit according to some embodiments is shown. Figure 1 ;

[0035] Fig. 9 The internal structure of the compressor module in the direct expansion air conditioning unit according to some embodiments is shown. Figure 2 ;

[0036] Fig.10 A partial cross-sectional view of a second shell in a direct expansion air conditioning unit according to some embodiments is shown;

[0037] Fig.11 It shows a schematic diagram of the structure of the left and right installation of a direct expansion air conditioning unit according to some embodiments;

[0038] Description of reference numerals:

[0039] 100- cooling and air supply module;

[0040] 110-first shell; 111-first frame; 1111-frame profile; 1112-connecting tee; 112-first box plate; 113-air outlet; 114-return air outlet;

[0041] 120-evaporator;

[0042] 130-air supply fan; 140-refrigeration pipeline of the cooling air supply module;

[0043] 200-compressor module;

[0044] 210 - second shell; 211 - second frame; 212 - second box board; 213 - edge piece;

[0045] 220-condenser; 221-water inlet pipe; 222-water outlet pipe;

[0046] 230 - compressor; 240 - refrigeration pipeline of the compressor module. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0049] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0050] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0052] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0053] The direct expansion air conditioning unit in the present application performs a refrigeration cycle of the air conditioning unit by using a compressor, a condenser, an expansion valve and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation to cool or heat the indoor space.

[0054] The direct expansion air conditioning unit itself has an integrated compressor. The liquid refrigerant evaporates (expands) directly in the evaporator coil. Through this physical process, it absorbs heat from the air outside the coil, thereby achieving a cooling effect.

[0055] The low-temperature and low-pressure refrigerant enters the compressor, which compresses it into high-temperature and high-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0056] The expansion valve expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the low-temperature and low-pressure refrigerant gas to the compressor. The evaporator can achieve a cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the entire cycle, the air conditioning unit can adjust the temperature of the indoor space.

[0057] like Figure 1-Figure 11As shown, some embodiments of the present application provide a direct expansion air-conditioning unit.

[0058] The direct expansion air conditioning unit includes a refrigeration cycle system, which includes a compressor 230, a condenser 220, an expansion valve and an evaporator 120, which are connected in sequence by refrigeration pipelines to form a closed cycle.

[0059] Specifically, the direct expansion air conditioning unit is divided into two modules, including a cooling and air supply module 100 and a compressor module 200 .

[0060] like Figure 5 and Figure 6 As shown, the cooling air supply module 100 includes a first shell 110 , an evaporator 120 and an air supply fan 130 disposed in the first shell 110 .

[0061] An air outlet 113 and an air return outlet 114 are provided on the first housing 110 .

[0062] The air outlet 113 can be connected to an air duct to supply air to the room.

[0063] The air supply fan 130 is the power source for the air supply of the entire unit. The air supply fan 130 drives the air to enter from the return air port 114 , and after being cooled by the evaporator 120 , the air is sent out from the air outlet 113 .

[0064] The evaporator 120 is a direct expansion heat exchanger.

[0065] like Figure 7-Figure 9 As shown, the compressor module 200 includes a second shell 210 , a condenser 220 and a compressor 230 disposed in the second shell 210 .

[0066] The electric control cabinet and the like are also disposed in the second housing 210 .

[0067] See also Figure 1 The refrigeration pipeline 140 (the gas pipe and liquid pipe of the evaporator 120 ) connected to the cooling and air supply module extends out of the first shell 110 .

[0068] The refrigeration pipeline 240 (the gas pipe and the liquid pipe of the compressor 230 ) connected to the compressor module extends out of the second shell 210 .

[0069] The refrigeration pipeline 140 of the cooling air supply module and the refrigeration pipeline 240 of the compressor module need to be welded together outside the first shell 110 and the second shell 210 to ensure that the compressor module 200 provides low-temperature refrigerant for the evaporator 120.

[0070] The cooling air supply module 100 and the compressor module 200 can be stacked up and down or placed separately.

[0071] If the transportation channel is not restricted, the gas pipe and liquid pipe can be welded on site, and the whole machine can be shipped directly to the installation site for floor installation.

[0072] If the transportation channel is limited, the cooling air supply module 100 and the compressor module 200 can be shipped separately, stacked after being transported to the designated location, and the air pipe and liquid pipe can be connected by welding on site.

[0073] If the height of the installation site is limited, the cooling air supply module 100 and the compressor module 200 may not be stacked up and down, but may be placed separately in a suitable installation position. After being placed and fixed, the gas pipe and liquid pipe of the two parts are connected by welding connecting pipes, such as Fig.11 shown.

[0074] The above-mentioned direct expansion air-conditioning unit adopts a modular design. The cooling and air supply module 100 and the compressor module 200 can be flexibly configured according to the actual application scenario. They can be installed in an integrated manner to adapt to spacious spaces, or can be installed in separate parts, which are suitable for narrow or structurally restricted areas, greatly broadening the scope of application. At the same time, the unit can choose to be supplied as a whole or in separate parts, effectively avoiding transportation obstacles and reducing logistics costs and risks. In addition, the production line can be divided into modules to realize separate line production, optimize the production process, and improve production efficiency.

[0075] In some embodiments of the present application, Figure 6 As shown, the first housing 110 includes a first frame 111 and a first box plate 112 connected to the first frame 111 .

[0076] The first frame 111 serves as a supporting structure and is a rectangular parallelepiped frame structure.

[0077] The first frame 111 is connected by the connecting tees 1112 at the corners and the frame profile 1111, which ensures the stability and strength of the structure.

[0078] The first box plate 112 is fixed on the first frame 111 , and the first box plate 112 is made of a highly efficient heat-insulating material, namely, a heat-insulating plate.

[0079] The insulation board not only has good thermal insulation performance, effectively reducing internal and external heat exchange and reducing energy loss, but also has excellent sound insulation effect, reducing noise interference during air conditioning operation.

[0080] In some embodiments of the present application, Figure 7 and Fig.10 As shown, the second shell 210 includes a second frame 211 and a second box plate 212 connected to the second frame 211 .

[0081] The second frame 211 serves as a supporting structure and is a rectangular parallelepiped frame structure.

[0082] The second box plate 212 is a sheet metal part. The second box plate 212 adopts a sheet metal part, which is beneficial to the heat dissipation of the compressor module 200. At the same time, the compressor module 200 adopts a frame + sheet metal part structure, which has low production cost and firm structure.

[0083] See also Fig. 9 Part or all of the second box plates 212 of the second shell 210 are detachably connected to the second frame 211, that is, part or all of the second box plates 212 can be used as inspection plates, which is convenient for disassembly and maintenance.

[0084] In some embodiments of the present application, the four corners of the second frame 211 are provided with edge pieces 213, such as Fig.10 , the edge piece 213 is flush with the second box board 212.

[0085] The frame is surrounded by an edge design, which not only enhances the overall stability of the frame, but also makes the edge piece 213 flush with the second box board 212, thereby improving the visual appearance of the entire frame.

[0086] In some embodiments of this application, see Figure 1 The cooling air supply module 100 is arranged on the upper side of the compressor module 200.

[0087] The cooling air supply module 100 adopts a top air outlet mode.

[0088] The air outlet 113 is opened at the top of the first shell 110 of the cooling air supply module 100 .

[0089] The air supply fan 130 is disposed at the lower side of the air outlet 113 .

[0090] The evaporator 120 is disposed at the lower side of the air supply fan 130 , and a return air port 114 is disposed on the first housing 110 at one side of the evaporator 120 .

[0091] In other embodiments of the present application, the air outlet 113 may also be opened on the side of the first shell 110 of the cooling air supply module 100, and the cooling air supply module 100 may adopt a lateral air outlet method.

[0092] When the side air outlet mode is adopted, the compressor module 200 can also be arranged on the upper side of the cooling air supply module 100.

[0093] In some embodiments of the present application, Figure 2 As shown, the condenser 220 is a plate heat exchanger or a shell and tube heat exchanger, and the water inlet pipe 221 and the water outlet pipe 222 of the condenser 220 extend out of the second shell 210, so as to be connected to a cold source such as an external cooling tower.

[0094] In some embodiments of the present application, a first through hole is opened on the side of the first shell 110 for passing the refrigeration pipeline 140 of the cooling and air supply module.

[0095] A second through hole is formed on the side surface of the second shell 210 for passing the refrigeration pipeline 240 of the compressor module.

[0096] When the cooling air supply module 100 is disposed on the compressor module 200 for stacking, the first through hole and the second through hole are located on the same side, which is convenient for welding connection of the refrigeration pipeline.

[0097] In order to ensure the integrity of the appearance of the cooling air supply module 100 and the compressor module 200 when they are installed up and down, the length and width of the first shell 110 of the cooling air supply module 100 are respectively equal to the length and width of the second shell 210 of the compressor module 200.

[0098] In some other embodiments of the present application, the cooling and air supply module 100 and the compressor module 200 may also be of equal height so as to maintain a uniform appearance when placed adjacent to each other on the left and right.

[0099] In some embodiments of this application, see Figure 8 , the refrigeration cycle system may use two or more compressors 230 .

[0100] The multi-compressor system can flexibly adjust the number of compressors in operation according to the changes in indoor load, realizing energy supply on demand. Under partial load conditions, only some compressors can be operated, thereby improving system efficiency and saving energy.

[0101] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

[0102] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A direct expansion air conditioning unit, comprising: A refrigeration cycle system, the refrigeration cycle system comprising a compressor, a condenser, an expansion valve and an evaporator connected in sequence by a refrigeration pipeline; Characterized in that the direct expansion air conditioning unit comprises: A cooling air supply module, the cooling air supply module comprising a first shell, an evaporator and an air supply fan arranged in the first shell; an air outlet and an air return port are arranged on the first shell; the air supply fan is used to drive air to enter from the air return port and be sent out from the air outlet after being cooled by the evaporator; A compressor module, the compressor module comprising a second shell, the condenser and the compressor arranged in the second shell; The cooling air supply module and the compressor module can be stacked up and down or placed separately; the refrigeration pipeline connecting the cooling air supply module and the refrigeration pipeline connecting the compressor module are connected and fixed outside the first shell and the second shell.

2. The direct expansion air conditioning unit according to claim 1, characterized in that: The first shell includes a first frame and a first box plate connected to the first frame, and the first box plate is a heat preservation plate.

3. The direct expansion air conditioning unit according to claim 2, characterized in that: The second shell includes a second frame and a second box plate connected to the second frame, wherein the second box plate is a sheet metal part.

4. The direct expansion air conditioning unit according to claim 3, characterized in that: Part of the second box panels or all of the second box panels of the second shell are detachably connected to the second frame.

5. The direct expansion air conditioning unit according to claim 4, characterized in that: The four corners of the second frame are provided with edging pieces, and the edging pieces are flush with the second box board.

6. The direct expansion air conditioning unit according to claim 1, characterized in that: The cooling air supply module is arranged on the upper side of the compressor module; the air outlet is opened at the top of the first shell, the air supply fan is arranged on the lower side of the air outlet, the evaporator is arranged on the lower side of the air supply fan, and the return air outlet is arranged on the first shell on one side of the evaporator.

7. The direct expansion air conditioning unit according to claim 1, characterized in that: The condenser is a plate heat exchanger or a shell and tube heat exchanger, and the water inlet pipe and the water outlet pipe of the condenser extend out of the second shell.

8. The direct expansion air conditioning unit according to claim 1, characterized in that: A first through hole is provided on the side of the first shell for passing the refrigeration pipeline of the cooling air supply module; a second through hole is provided on the side of the second shell for passing the refrigeration pipeline of the compressor module; according to the setting position of the cooling air supply module and the compressor module, the refrigeration pipeline of the cooling air supply module is connected with the refrigeration pipeline of the compressor module through a connecting pipeline.

9. The direct expansion air conditioning unit according to claim 1, characterized in that: The length and width of the first shell of the cooling and air supply module are respectively equal to the length and width of the second shell of the compressor module.

10. The direct expansion air conditioning unit according to claim 2, characterized in that: The first frame is a rectangular parallelepiped frame structure, and the first frame is formed by connecting tees at corners and frame profiles.

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