Water-cooling direct expansion type air conditioner

Abstract

The utility model relates to the technical field of air conditioners, in particular to a water-cooling direct expansion type air conditioner. The water-cooling direct-expansion type air conditioner comprises a machine box, a water-cooling direct-expansion type air conditioner and a water-cooling direct-expansion type air conditioner, and the at least one electric control cabinet is arranged in the case, each preset opening is correspondingly provided with one electric control cabinet, and a cabinet door of the electric control cabinet can be opened or closed from the outer side of the case. According to the water-cooling direct-expansion type air conditioner, the case is provided with the preset opening communicated with the internal space and the external space of the case, the electric control cabinet is installed at the preset opening, the electric control cabinet can be maintained or debugged through the preset opening, the electric control cabinet does not need to enter the interior of the case, and the electric control cabinet is more convenient to maintain or debug.

Description

Technical Field

[0001] The utility model belongs to the technical field of air conditioners, and in particular relates to a water-cooled direct expansion air conditioner. Background Art

[0002] In subways, stations, shopping malls and other places with large areas and large cooling capacity requirements, the refrigeration system generally uses water-cooled direct expansion air-conditioning units. Water-cooled direct expansion air-conditioning units combine the main system and the terminal into a complete machine and eliminate the chilled water transportation system to achieve the purpose of saving energy and reducing engineering installation costs.

[0003] The current water-cooled direct expansion air-conditioning unit includes a main unit part and an electronic control unit, both of which are arranged inside a chassis. The main unit part and the electronic control unit share the same inspection channel during maintenance. It is necessary to remove the chassis inspection panel to enter the chassis to debug or repair the electronic control unit, which is inconvenient. Utility Model Content

[0004] The purpose of the utility model is to at least solve the problem of inconvenient maintenance and debugging of the electric control part. This purpose is achieved by the following methods:

[0005] According to an embodiment of the utility model, a water-cooled direct expansion air conditioner is proposed, which includes: a chassis, the chassis is provided with at least one preset opening connecting the internal and external spaces of the chassis; at least one electric control cabinet is arranged in the chassis, each of the preset openings corresponds to an electric control cabinet installed, and the cabinet door of the electric control cabinet can be opened or closed from the outside of the chassis.

[0006] According to the water-cooled direct expansion air conditioner of the utility model, a preset opening connecting the internal and external spaces of the chassis is provided, and the electric control cabinet is installed at the preset opening. The electric control cabinet can be repaired or debugged through the preset opening without entering the interior of the chassis, making the repair or debugging of the electric control cabinet more convenient.

[0007] In addition, the water-cooled direct expansion air conditioner according to the utility model may also have the following additional technical features:

[0008] In some embodiments of the utility model, the chassis includes a connected bottom wall and side walls, and the preset opening is arranged on the side wall; the water-cooled direct expansion air conditioner also includes a host system, the host system is arranged in the chassis, and the electrical control cabinet is located on at least one side of the host system along the horizontal direction.

[0009] In some embodiments of the utility model, an inspection channel is provided inside the chassis on one side of the host system along the first direction, and both ends of the inspection channel in the length direction extend to the two opposite side walls of the chassis respectively, and the length direction of the inspection channel is perpendicular to the first direction; wherein the preset opening is located at at least one end of the inspection channel along the length direction.

[0010] In some embodiments of the utility model, the at least one preset opening includes a first preset opening and a second preset opening, the first preset opening and the second preset opening are respectively located at both ends of the length direction of the maintenance passage, and the at least one electric control cabinet includes a starting cabinet and a control cabinet, the starting cabinet is installed at the first preset opening, and the control cabinet is installed at the second preset opening.

[0011] In some embodiments of the present invention, the water-cooled direct expansion air conditioner further includes at least one bracket, the bracket is mounted on the bottom wall, and each of the electric control cabinets is connected to the bottom wall via one of the brackets.

[0012] In some embodiments of the utility model, a support member is provided at the inner edge of the preset opening, and a sealing connector is provided at the outer periphery of the electric control cabinet, and the sealing connector is detachably connected to the support member.

[0013] In some embodiments of the present invention, the support member extends along at least a portion of an inner edge of the preset opening, the sealing connector extends along at least a portion of an outer periphery of the electric control cabinet, and the sealing connector is sealingly connected to the support member.

[0014] In some embodiments of the utility model, the side wall of the chassis is also provided with an inspection door, and the inspection door is located on one side of the inspection passage along the first direction; wherein, along the second direction, the inspection door is opposite to the host system and is spaced apart, and the second direction is parallel to the length direction of the inspection passage.

[0015] In some embodiments of the present invention, a transition passage is further provided between the inspection door and the host system, and the transition passage is communicated with the inspection passage.

[0016] In some embodiments of the present invention, along the first direction, the host system is located between the side wall and the inspection passage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. Among them:

[0018] Figure 1 This is a schematic diagram of the structure of a water-cooled direct expansion air conditioner from an upper left perspective of an embodiment of the utility model;

[0019] Figure 2 It is a structural schematic diagram of a water-cooled direct expansion air conditioner from a left-side perspective according to an embodiment of the utility model;

[0020] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the AA part;

[0021] Figure 4 It is a structural schematic diagram of a water-cooled direct expansion air conditioner from a right side perspective according to an embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of a water-cooled direct expansion air conditioner from an upper right perspective of an embodiment of the utility model;

[0023] Figure 6 for Figure 1 A partial enlarged schematic diagram of part B;

[0024] Figure 7 for Figure 5 A partial enlarged schematic diagram of part C in the middle.

[0025] The reference numerals in the accompanying drawings represent the following:

[0026] 100. Water-cooled direct expansion air conditioner;

[0027] 10. chassis; 11. bottom wall; 12. side wall; 13. preset opening; 131. first preset opening; 132. second preset opening; 14. maintenance passage; 15. transition passage;

[0028] 20. Electric control cabinet; 21. Starter cabinet; 22. Control cabinet; 201. Cabinet door;

[0029] 30. Host system;

[0030] 40. Bracket;

[0031] 51. Support member; 52. Sealing connector;

[0032] 60. Inspection door;

[0033] X-first direction; Y-length direction of the maintenance passage. DETAILED DESCRIPTION

[0034] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0035] It should be understood that the terms used in the text are only for the purpose of describing specific example embodiments, and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used in the text may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described in the text are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0036] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the exemplary embodiment.

[0037] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is rotated, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.

[0038] The water-cooled direct expansion air conditioning unit includes a main unit and an electric control unit. The main unit includes a compressor, a shell and tube condenser, and refrigerant pipelines and water cooling pipelines supporting the compressor and the shell and tube condenser. The electric control unit includes an electric control cabinet for power distribution and operation control of various electrical components in the water-cooled direct expansion air conditioner, such as a starter cabinet and a control cabinet. In the current water-cooled direct expansion air conditioning main unit, the starter cabinet and the control cabinet are installed on the main unit. However, due to the small size of the main unit and the complex pipelines supporting it, and the large size of the starter cabinet and the control cabinet, the layout between the electric control cabinet and the main unit is difficult. In addition, due to size restrictions, one side of the main unit is close to the chassis panel, and a maintenance channel is reserved on the other side of the main unit. The main components are concentrated in the space on one side of the maintenance channel. Installing the starter cabinet and the control cabinet on the main unit will inevitably block the maintenance vision and space of the main components in the main unit, which is not conducive to the maintenance work of the main unit. It should also be noted that since the starter cabinet, control cabinet and main machine are all arranged inside the chassis, it is necessary to frequently enter the inside of the chassis when inspecting or adjusting the starter cabinet and control cabinet, which is inconvenient.

[0039] Based on the above considerations, to solve at least one of the above problems, please combine Figure 1 , Figure 2 and Figure 3 As shown, the utility model provides a water-cooled direct expansion air conditioner 100 , which includes a chassis 10 , a host system 30 and at least one electric control cabinet 20 .

[0040] Specifically, the chassis 10 is roughly in the shape of a rectangular parallelepiped, and includes a frame structure and a plate arranged on the frame structure so that the chassis 10 encloses an internal accommodation space for accommodating devices such as the host system 30 and the electric control cabinet 20. The chassis 10 includes a bottom wall 11, a side wall 12 and a top wall connected to each other. The bottom wall 11 is arranged at the bottom of the chassis 10, and one end of the side wall 12 facing the bottom is connected to the bottom wall 11, and one end of the side wall 12 facing the top is connected to the top wall. The bottom wall 11, the side wall 12 and the top wall together enclose an accommodation space.

[0041] In this embodiment, please combine Figure 1 , Figure 2 and Figure 3As shown, at least one preset opening 13 is provided on the chassis 10, and the preset opening 13 is used to connect the internal and external spaces of the chassis 10. The preset opening 13 can be provided on the side wall 12 and / or the top wall. The electric control cabinet 20 is provided inside the chassis 10, and an electric control cabinet 20 is installed at each preset opening 13 position. By providing a preset opening 13 connecting the internal and external spaces of the chassis 10, and installing the electric control cabinet 20 at the preset opening 13, the cabinet door 201 of the electric control cabinet 20 can be opened or closed from the outside of the chassis 10, and the electric control cabinet 20 can be repaired or debugged through the preset opening 13 without entering the interior of the chassis 10, making the repair or debugging of the electric control cabinet 20 more convenient. In this embodiment, the shape contour of the preset opening 13 matches the shape contour of the electric control cabinet 20. When the electric control cabinet 20 is installed at the preset opening 13, the electric control cabinet 20 can block the preset opening 13, so that the position of the preset opening 13 remains sealed.

[0042] In some embodiments of the present invention, please combine Figure 1 and Figure 3 As shown, the preset opening 13 is provided on the side wall 12, the host system 30 is located in the case 10 and installed on the bottom wall 11, the host system 30 includes a compressor, a shell and tube condenser, and a refrigerant pipeline and a water cooling pipeline matched with the compressor and the shell and tube condenser, and the electric control cabinet 20 is provided on one side of the host system 30 in the horizontal direction to reduce the blocking effect of the electric control cabinet 20 on the maintenance vision and space of the host system 30, so that the host system 30 has a larger maintenance vision and maintenance space, and it is convenient for maintenance personnel to maintain the host system 30 from the upper side of the host system 30. In this embodiment, the compressor, condenser, throttling device and evaporator assembly in the host system 30 are connected through the piping assembly to form a refrigerant circuit capable of refrigeration cycle, and by arranging a gas-liquid separator in the refrigerant circuit between the evaporator assembly and the compressor, the gas-liquid separator is used to separate the refrigerant between the evaporator assembly and the compressor, and the gas-liquid separator can carry excessive liquid droplets with the low-pressure and low-temperature steam returning to the compressor, thereby reducing the risk of liquid refrigerant entering the compressor and causing liquid hammer to the compressor. At the same time, it can also reduce the risk of excessive refrigerant diluting the compressor oil, helping to improve the performance and service life of the compressor.

[0043] Furthermore, please combine Figure 1 and Figure 3As shown, in this embodiment, the side wall 12 of the chassis 10 includes a panel and a side panel connected to the panel, and a preset opening 13 is provided on the side panel. Along the first direction, one side of the host system 30 is arranged close to the panel of the chassis 10, and the inside of the chassis 10 is provided with an inspection channel 14 on the other side of the host system 30. The inspection channel 14 is a long strip-shaped space structure, and maintenance personnel can inspect and maintain the host system 30 in the inspection channel 14. Specifically, the first direction is parallel to the horizontal direction and perpendicular to the panel, the length direction of the inspection channel 14 is parallel to the horizontal direction and perpendicular to the side panel, the first direction is perpendicular to the length direction of the inspection channel 14, and the two ends of the length direction of the inspection channel 14 extend to two opposite side panels in the chassis 10 respectively. Among them, the preset opening 13 is located at at least one end of the length direction of the inspection channel 14. It can be understood that since the electric control cabinet 20 is installed in the preset opening 13, the setting position of the electric control cabinet 20 is at least one end of the length direction of the maintenance channel 14. In the first direction and the second direction, the electric control cabinet 20 and the host system 30 are staggered, thereby reducing the interference of the electric control cabinet 20 on the maintenance space and maintenance field of view of the host system 30.

[0044] In some embodiments of the present invention, Figure 2 . Figure 3 and Figure 4 As shown, at least one preset opening 13 includes a first preset opening 131 and a second preset opening 132, and the first preset opening 131 and the second preset opening 132 are respectively located at the two ends of the length direction of the maintenance channel 14, and at least one electric control cabinet 20 includes a starter cabinet 21 and a control cabinet 22, and the starter cabinet 21 is used to control the start and stop of the host system 30 in the water-cooled direct expansion air conditioner 100. The starter cabinet 21 senses the power supply voltage and current through a current controller and a voltage controller to achieve control of the host system 30. At the same time, the starter cabinet 21 can also monitor and control the temperature, protection, braking and other aspects of the host system 30 in real time. The control cabinet 22 is mainly used to control and adjust the operating state of the host system 30. Specifically, the control cabinet 22 can receive signals from sensors, detect environmental factors such as indoor temperature and humidity in real time, and automatically control and adjust according to set parameters to ensure that the indoor air reaches the preset temperature, humidity and air quality requirements. In this embodiment, the starter cabinet 21 and the control cabinet 22 are respectively arranged at both ends of the length direction of the maintenance passage 14, so as to avoid the middle area of ​​the maintenance passage 14, so that the host system 30 can be inspected and maintained by using the maintenance passage 14.

[0045] In some embodiments of the present invention, Figure 1 and Figure 5As shown, the water-cooled direct expansion air conditioner 100 also includes at least one bracket 40, which is installed on the bottom wall 11, and each electric control cabinet 20 is connected to the bottom wall 11 through a bracket 40. It can be understood that the side wall 12 of the chassis 10 is a non-load-bearing structure, and the starter cabinet 21 and the control cabinet 22 have a large weight. Therefore, by arranging the bracket 40 at the bottom of the starter cabinet 21 and the control cabinet 22, the starter cabinet 21 and the control cabinet 22 are supported by the bracket 40 to prevent the starter cabinet 21 and the control cabinet 22 from pulling the side wall 12 of the chassis 10 under the action of gravity and causing it to deform. It should also be noted that by arranging the bracket 40 between the electric control cabinet 20 and the bottom wall 11, the height of the electric control cabinet 20 can be raised to improve the comfort of the maintenance personnel when debugging and repairing the electric control cabinet 20, which is conducive to improving the maintenance efficiency.

[0046] In this embodiment, the bracket 40 includes a frame welded by angle steel and U-shaped steel and a sealing plate installed on the top of the frame. The sealing plate is a bent plate-like structure. The sealing plate includes a support portion connected to the top of the frame and a connecting portion connected to the support portion. The connecting portion is perpendicular to the support portion so that the sealing plate is roughly L-shaped. The bottom of the electric control cabinet 20 is placed on the support portion and connected to the electric control cabinet 20 by the connecting portion. Specifically, the angle steel at the bottom of the frame is provided with a waist-shaped hole, and the frame is fixed to the bottom wall 11 of the chassis 10 by passing bolts through the waist-shaped hole. A connecting hole is provided on the connecting portion, and bolts are passed through the connecting hole and connected to the electric control cabinet 20, so that the electric control cabinet 20 is fixedly installed on the sealing plate.

[0047] In some embodiments of the present invention, Figure 6 and Figure 7 As shown, in order to improve the connection strength between the electric control cabinet 20 and the side wall 12, a support member 51 is provided at the inner edge of the preset opening 13, and a sealing connector 52 is provided at the outer periphery of the electric control cabinet 20, and the sealing connector 52 is detachably connected to the support member 51. In some embodiments, one of the support member 51 and the sealing connector 52 is provided with a card slot, and the other of the two is provided with a buckle, so that the support member 51 and the sealing connector 52 are snapped together for quick assembly and disassembly. In other embodiments, the support member 51 and the sealing connector 52 can also be provided with threaded holes and connecting holes respectively, and the support member 51 and the sealing connector 52 are connected and fixed by using screws or bolts to cooperate with the connecting holes and the threaded holes.

[0048] In some embodiments of the present invention, Figure 6 and Figure 7As shown, the support member 51 is in the shape of a long strip and extends along the inner edge of the preset opening 13. The support member 51 is a U-shaped sheet metal. The inner edge of the preset opening 13 is inserted into the groove of the U-shaped sheet metal, so that the support member 51 is fixed at the inner edge of the preset opening 13. The preset opening 13 is in the shape of a rectangle. Four support members 51 are arranged at the inner edge of the preset opening 13. The four support members 51 are connected end to end to form a rectangular frame structure, so that the four support members 51 are connected as a whole, thereby improving the overall support strength of the support member 51. The sealing connector 52 is in the shape of a long strip and extends along the outer periphery of the electric control cabinet 20. The length of the sealing connector 52 matches that of the support member 51. The sealing connector 52 is provided with a screw hole, and the support member 51 is provided with a through hole. The screw is inserted into the screw hole through the through hole, so that the sealing connector 52 is connected to the support member 51, and the gap between the electric control cabinet 20 and the preset opening 13 is sealed by the cooperation of the sealing connector 52 and the support member 51.

[0049] In some embodiments of the present invention, please combine Figure 1 and Figure 4 As shown, the electric control cabinet 20 has a cabinet door 201 that can open or close the electric control cabinet 20, and the cabinet door 201 is embedded in the preset opening 13. During the inspection or debugging of the electric control cabinet 20, it is only necessary to open the cabinet door 201 through the preset opening 13, and there is no need to enter the interior of the chassis 10, which makes the inspection and debugging of the electric control cabinet 20 more convenient and quick.

[0050] In some embodiments of the present invention, Figure 3 , Figure 4 and Figure 5 As shown, the side wall 12 of the chassis 10 is further provided with an inspection door 60, which is located at one side of the inspection passage 14 along the first direction, and the inspection door 60 is arranged opposite to the host system 30 along the second direction, and the second direction is parallel to the length direction of the inspection passage 14. In this embodiment, maintenance personnel can enter the chassis 10 through the inspection door 60 to inspect the host system 30.

[0051] In some embodiments of the present invention, Figure 3 As shown, a transition passage 15 is further provided between the inspection door 60 and the host system 30 , and the transition passage 15 is communicated with the inspection passage 14 . After opening the inspection door, maintenance personnel can enter the inspection passage 14 through the transition passage 15 to inspect the host system 30 .

[0052] The water-cooled direct expansion air conditioner proposed in the utility model also includes an evaporator assembly, and the host system is connected to the evaporator assembly through a piping assembly. In the present embodiment, the water-cooled direct expansion air conditioner is an air conditioning system that can rely on water and air for heat exchange, thereby taking away the high temperature of the condenser and realizing refrigeration. For example, the water can be cooled by a cooling water tower, a cooling water pump, etc., so that the refrigerant in the condenser is cooled, and the cooled refrigerant flows into the evaporator, and the circulating water is cooled by the evaporator, and then sent to the indoor terminal equipment to exchange heat with the indoor air to achieve temperature regulation. In addition, in addition to the daily cooling function, the water-cooled direct expansion air conditioner can be provided with an air inlet and an air outlet, as well as a filter assembly, so that it has ventilation, dust removal, deodorization and other effects.

[0053] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A water-cooled direct expansion air conditioner, characterized in that: The water-cooled direct expansion air conditioner comprises: A chassis, wherein the chassis is provided with at least one preset opening connecting the interior and exterior spaces of the chassis; At least one electric control cabinet is arranged in the chassis, and each of the preset openings is correspondingly installed with one electric control cabinet, and the cabinet door of the electric control cabinet can be opened or closed from the outside of the chassis.

2. The water-cooled direct expansion air conditioner according to claim 1, characterized in that: The chassis comprises a bottom wall and a side wall connected to each other, and the preset opening is arranged on the side wall; The water-cooled direct expansion air conditioner also includes a host system, which is arranged in the chassis, and the electric control cabinet is located on at least one side of the host system along the horizontal direction.

3. The water-cooled direct expansion air conditioner according to claim 2, characterized in that: An inspection passage is provided inside the chassis at one side of the host system along the first direction. Both ends of the inspection channel in the length direction extend to the two opposite side walls of the chassis respectively, and the length direction of the inspection channel is perpendicular to the first direction; Wherein, the preset opening is located at at least one end of the inspection passage along the length direction.

4. The water-cooled direct expansion air conditioner according to claim 3, characterized in that: The at least one preset opening includes a first preset opening and a second preset opening, the first preset opening and the second preset opening are respectively located at two ends of the length direction of the inspection passage, and the at least one electric control cabinet includes a starting cabinet and a control cabinet, the starting cabinet is installed at the first preset opening, and the control cabinet is installed at the second preset opening.

5. The water-cooled direct expansion air conditioner according to claim 2, characterized in that: The water-cooled direct expansion air conditioner also includes at least one bracket, which is installed on the bottom wall, and each of the electric control cabinets is connected to the bottom wall via one of the brackets.

6. The water-cooled direct expansion air conditioner according to claim 2, characterized in that: A support is provided at the inner edge of the preset opening, and a sealing connector is provided at the outer periphery of the electric control cabinet. The sealing connector is detachably connected to the support.

7. The water-cooled direct expansion air conditioner according to claim 6, characterized in that: The support member extends along at least a portion of the inner edge of the preset opening, the sealing connection member extends along at least a portion of the outer periphery of the electric control cabinet, and the sealing connection member is sealingly connected to the support member.

8. The water-cooled direct expansion air conditioner according to claim 3, characterized in that: The side wall of the chassis is also provided with an inspection door, and the inspection door is located on one side of the inspection passage along the first direction; Among them, the inspection door and the host system are directly opposite and spaced apart along the second direction, and the second direction is parallel to the length direction of the inspection passage.

9. The water-cooled direct expansion air conditioner according to claim 8, characterized in that: A transition passage is also provided between the inspection door and the host system, and the transition passage is communicated with the inspection passage.

10. The water-cooled direct expansion air conditioner according to claim 3, characterized in that: Along the first direction, the host system is located between the side wall and the access passage.

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