Air conditioning unit

Abstract

The utility model discloses an air conditioning unit which comprises a shell, a heat exchanger and a heat exchanger. The surface air cooler is arranged in the mounting cavity, and the surface air cooler is used for exchanging heat with gas flowing through the surface air cooler; the anti-freezing switch is used for controlling on and off of a circuit according to the temperature of the surface air cooler, the anti-freezing switch comprises a controller and a sensor, and the sensor is used for detecting the temperature of the surface air cooler; the controller is used for receiving the temperature, detected by the sensor, of the surface air cooler; the air conditioning unit is characterized in that the air conditioning unit further comprises a first fixing piece, a second fixing piece and a third fixing piece, the first fixing piece is fixedly connected with the controller; the second fixing piece is inserted into the side wall of the shell, and a capillary tube of the sensor penetrates through the second fixing piece to be connected with the controller. The first fixing piece and the second fixing piece are additionally arranged, so that a controller can be conveniently fixed, the exposed length of a capillary tube outside a unit is effectively reduced, the effective length of a sensor copper tube for testing the temperature in the unit is increased, and the detection protection precision error value of the unit is reduced; and meanwhile, the risk that the capillary tube is scratched is reduced, the problem of sealing the hole is solved, the anti-freezing switch component can be replaced by a subsequent unit under the condition that the sensor copper tube is not damaged, and the operation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to an air conditioning unit. Background Art

[0002] The antifreeze switch, also known as the antifreeze alarm, is an important device used to warn the unit when the temperature enters a dangerous range in the freezing season or to directly and automatically control the start and stop of the unit, thereby ensuring the safe operation of the equipment. It is mainly composed of a controller and a sensor, and is usually installed on the leeward side of the surface cooler.

[0003] The existing antifreeze switch component controller is usually installed and fixed in the following way: select an appropriate position on the leeward side of the surface cooler, and then use a marker to mark the installation and fixing point. Use a drill to pre-drill a fixing hole with a diameter of 3mm~5mm inside the unit. Pass the sensor copper tube of the antifreeze switch through the round hole and extend it into the box; use the accessory self-tapping screws to fix the controller on the installation plane.

[0004] However, the following problems are likely to occur when using the above installation steps: On the one hand, if the marking position is wrong during fixing, the controller cannot be installed normally, and it is necessary to re-mark the position and drill holes before fixing. In addition, when the hole position is close to the cooler position, the sensor copper tube will contact the cooler end plate sheet metal when it is arranged on the leeward side. The micro-vibration generated during the transportation of the unit or when the unit is running will increase the risk of the sensor copper tube wearing and leaking, causing the sensor to fail to work properly.

[0005] On the other hand, when the sensor copper tube is passed into the unit, since the fixing hole is drilled on site, burrs are easily generated on the edge of the hole, and there is a risk of scratches when the sensor copper tube is inserted. In addition, in order to reduce the air leakage rate of the unit, the hole needs to be sealed after the sensor is installed, usually by applying sealant. This method is difficult to operate during subsequent disassembly and replacement, and it also increases the possibility of damage to the sensor copper tube.

[0006] 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

[0007] In view of the problems pointed out in the background technology, the utility model proposes an air conditioning unit to adjust the installation position of the controller and protect the structure of the sensor.

[0008] In order to achieve the above-mentioned invention object, the utility model adopts the following technical solutions:

[0009] In some embodiments of the present application, an air conditioning unit is provided, comprising:

[0010] a housing, wherein a mounting cavity is formed;

[0011] A surface cooler, which is arranged in the installation cavity, and the surface cooler is used to perform heat exchange with the gas flowing through it;

[0012] An antifreeze switch is used to control the switch of the circuit according to the temperature of the surface cooler.

[0013] The antifreeze switch includes a controller and a sensor, wherein the sensor is used to detect the temperature of the surface cooler; the controller is used to receive the temperature of the surface cooler detected by the sensor; and the air conditioning unit further includes:

[0014] A first fixing member, which is disposed on a side wall of the housing; the first fixing member is fixedly connected to the controller;

[0015] The second fixing member is plugged into the side wall of the shell, and the capillary of the sensor passes through the second fixing member and is connected with the controller.

[0016] In some embodiments of the present application, the first fixing member includes a mounting plate and a first contact member and a second contact member symmetrically arranged; the first contact member and the second contact member are respectively fixed on both sides of the mounting plate; the mounting plate is provided with a plurality of mounting portions for fixing the controller; the first contact member and the second contact member are in contact with the side wall and fixedly connected.

[0017] In some embodiments of the present application, a plurality of limiting portions are further provided on the installation plate; the plurality of limiting portions form a positioning space, and during the installation process, the controller is embedded in the positioning space.

[0018] In some embodiments of the present application, the first contact member and the second contact member are structures bent toward the side wall on both sides of the mounting plate; the first contact member includes a first supporting portion and a first fitting portion; the second contact member includes a second supporting portion and a second fitting portion; and a gap is formed between the first fitting portion and the second fitting portion and the mounting plate.

[0019] In some embodiments of the present application, the second fixing member includes a connecting tube and a connecting plate, wherein the connecting plate is sleeved on the outer peripheral wall of the connecting tube; the connecting plate is fixed on the side wall of the shell; the connecting tube passes through the side wall of the shell and extends into the installation cavity; the capillary tube passes through the inner cavity of the connecting tube.

[0020] In some embodiments of the present application, the second fixing member is further provided with a sealing gasket, which is arranged between the connecting disk and the side wall of the shell; the sealing gasket is used to seal the gap where the connecting disk and the side wall of the shell meet.

[0021] In some embodiments of the present application, the sealing gasket is provided with a first through hole for the connecting pipe to pass through, and the inner diameter of the first through hole is not larger than the outer diameter of the connecting pipe; the side wall is provided with a second through hole for the connecting pipe to pass through, and the inner diameter of the second through hole is not smaller than the outer diameter of the connecting pipe.

[0022] In some embodiments of the present application, a sealing member for sealing the capillary tube and the port is provided at the port of the connecting tube close to the sensor.

[0023] In some embodiments of the present application, the mounting plate is further provided with an avoidance hole, and during the installation process, the connecting pipe passes through the avoidance hole to the controller.

[0024] In some embodiments of the present application, an air conditioning unit is provided, comprising:

[0025] a housing, wherein a mounting cavity is formed;

[0026] A surface cooler, which is arranged in the installation cavity, and the surface cooler is used to perform heat exchange with the gas flowing through it;

[0027] An antifreeze switch is used to control the switch of the circuit according to the temperature of the surface cooler.

[0028] The antifreeze switch includes a controller and a sensor, the controller is connected to the sensor, the controller is located outside the installation cavity, and the sensor is arranged on the surface cooler; characterized in that the air conditioning unit also includes:

[0029] A first fixing member, which is disposed on a side wall of the housing; the first fixing member is fixedly connected to the controller;

[0030] The second fixing member is plugged into the side wall of the shell, and the capillary of the sensor passes through the second fixing member and is connected with the controller.

[0031] Compared with the prior art, the advantages and positive effects of the utility model are:

[0032] The utility model can conveniently fix the controller and effectively reduce the exposed length of the capillary outside the unit by adding the first fixing part and the second fixing part, so that the effective length of the sensor copper tube for testing the temperature inside the unit is increased, and the error value of the detection and protection accuracy of the unit is reduced; at the same time, the risk of scratching the capillary tube is also reduced, and the problem of closed holes is solved. The antifreeze switch component of the subsequent unit can be replaced without damaging the sensor copper tube, and the operation is also more convenient.

[0033] 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

[0034] 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.

[0035] Figure 1 is one of the structural schematic diagrams of an air conditioning unit according to an embodiment;

[0036] Figure 2 This is a second structural schematic diagram of an air conditioning unit according to an embodiment;

[0037] Figure 3 for Figure 1 A longitudinal cross-sectional diagram of the location of the central controller;

[0038] Figure 4 for Figure 3 A magnified view of part A;

[0039] Figure 5 is one of the connection diagrams of the controller and the first fixing member according to an embodiment;

[0040] Figure 6 is a second schematic diagram of connection between the controller and the first fixing member according to an embodiment;

[0041] Figure 7 is an exploded schematic diagram of the controller, the first fixing member and the second fixing member according to an embodiment;

[0042] Figure 8 is one of the structural schematic diagrams of the first fixing member according to the embodiment;

[0043] Fig. 9 is a second structural schematic diagram of the first fixing member according to the embodiment;

[0044] Fig.10 Schematic diagram of the structure of the second fixing member according to an embodiment.

[0045] Reference numerals:

[0046] 100, shell; 110, side wall; 111, second through hole; 200, surface cooler; 300, controller; 400, first fixing member; 410, mounting plate; 411, mounting portion; 412, limiting portion; 413, second connecting hole; 414, avoidance hole; 420, first contact member; 421, first supporting portion; 422, first fitting portion; 423, first connecting hole; 430, second contact member; 431, second supporting portion; 432, second fitting portion; 500, second fixing member; 510, connecting pipe; 511, first branch pipe portion; 512, second branch pipe portion; 513, port; 520, connecting plate; 521, first through hole; 530, sealing gasket; 600, sensor; 610, capillary. 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] This embodiment discloses an air conditioning unit, such as an air conditioning unit, a cabinet unit, a ceiling air conditioning unit, a ceiling jet unit, etc. When the air conditioning unit is used in cold areas, the air conditioning unit is equipped with an antifreeze switch.

[0054] Specifically, refer to Figure 1 to Figure 2 The air conditioning unit includes a housing 100, a mounting cavity is formed in the housing 100, and components such as a surface cooler 200, a fan, and a water receiving pan are arranged in the mounting cavity. The surface cooler 200 is used to exchange heat with the gas flowing through it. The fan is used to drive the gas circulation. The water receiving pan is used to receive the condensed water dripping from the surface cooler 200. Figure 2 Components such as the fan are omitted in order to illustrate the installation structure on the surface cooler 200.

[0055] The antifreeze switch is also called an antifreeze alarm. The antifreeze switch is installed on the surface cooler 200 and is used to control the switch of the circuit according to the temperature of the surface cooler 200. In other words, the antifreeze switch is used to warn the unit temperature to enter a dangerous range in the freezing season or to directly and automatically control the start and stop of the unit, thereby ensuring the safe operation of the equipment.

[0056] The antifreeze switch is mainly composed of a controller 300 and a sensor 600. The sensor 600 is usually installed on the leeward side of the air conditioner condenser 200. The sensor 600 is used to detect the temperature of the heat exchanger tube of the condenser 200. The sensor 600 uploads the detected reaching temperature information to the controller 300, and the controller 300 then uploads the temperature information to the control system of the air conditioner unit.

[0057] The working principle of the antifreeze switch is: the capillary tube of the sensor 600 is filled with refrigerant. Since the capillary tube of the sensor 600 is in contact with the heat exchange tube of the surface cooler 200, heat exchange occurs between the two, causing the temperature of the capillary tube of the sensor 600 to change. The pressure generated by thermal expansion and contraction pushes the spring in the controller 300, driving the normally open and normally closed contacts to switch.

[0058] In this application, the air conditioning unit includes an outdoor unit and an indoor unit, and the air conditioning unit performs the refrigeration cycle of the air conditioner 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.

[0059] 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.

[0060] 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 conditioner can adjust the temperature of the indoor space.

[0061] The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

[0062] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger functions as a condenser, the air conditioner functions as a heater in a heating mode, and when the indoor heat exchanger functions as an evaporator, the air conditioner functions as a cooler in a cooling mode.

[0063] Reference Figure 1 In the outdoor unit shown, the controller is arranged on the outside of the outdoor unit housing. The present application focuses on improving the fixing structure of the controller on the housing, which can not only realize the convenient fixing of the controller, but also reduce the impact on the sensor.

[0064] Reference Figure 3 and Figure 4 As shown, the air conditioning unit also includes:

[0065] A first fixing member 400 is disposed on the side wall 110 of the housing 100 ; the first fixing member 400 is fixedly connected to the controller 300 ;

[0066] The second fixing member 500 is plugged into the side wall 110 of the housing 100 , and the capillary of the sensor 600 passes through the second fixing member 500 and is connected to the controller 300 .

[0067] In some embodiments of the present application, the first fixing member 400 is used to connect the controller 300 and the housing 100 to prevent the controller 300 from being unable to adjust its installation position at will when the controller 300 is directly installed on the housing 100.

[0068] In some embodiments of the present application, refer to Figure 5 and Figure 6 As shown, the first fixing member 400 includes a mounting plate 410 and a first contact member 420 and a second contact member 430 symmetrically arranged; the first contact member 420 and the second contact member 430 are respectively fixed on both sides of the mounting plate 410; the first contact member 420 and the second contact member 430 are in contact with and fixedly connected to the side wall 110.

[0069] The mounting plate 410 is provided with a plurality of mounting portions 411 for fixing the controller 300 .

[0070] Reference Figure 7 As shown, the mounting portion 411 may be a through hole opened on the mounting plate 410 .

[0071] The mounting portion 411 can be used to fix the controller 300 on the mounting plate 410 by cooperating with fixing parts such as screws.

[0072] In some embodiments of the present application, a plurality of limiting portions 412 are further provided on the mounting plate 410 ; the plurality of limiting portions 412 form a positioning space, and during the installation process, the controller 300 is embedded in the positioning space.

[0073] The limiting portion 412 may be a structure that is bent upward relative to the plane of the mounting plate 410 . The limiting portion 412 may be in contact with the housing of the controller 300 to limit its displacement on the mounting plate 410 .

[0074] In some embodiments of the present application, continue to refer to Figure 5 and Figure 6As shown, there are four limiting portions 412 , which are distributed on both sides and the bottom of the controller 300 , and can better support and assist in fixing the controller 300 during the installation process.

[0075] Two of the limiting portions 412 are located at two sides of the controller 300 , respectively, and the other two limiting portions 412 are located at the bottom of the controller 300 .

[0076] The setting of the limiting portion 412 can better position the controller 300 on the mounting plate 410 , thereby improving the installation efficiency of the controller 300 .

[0077] In some embodiments of the present application, continue to refer to Figure 5 and Figure 6 As shown, the first contact member 420 and the second contact member 430 are structures respectively bent at two sides of the mounting plate 410 toward the side wall 110 .

[0078] That is, the first contact member 420 and the second contact member 430 are directly fixedly connected to the side wall 110 of the housing 100. The first contact member 420 and the second contact member 430 are arranged as a bent structure, which can effectively increase the gap between the mounting plate 410 and the side wall 110 of the housing 100, thereby providing installation space for the second fixing member 500.

[0079] In some embodiments of the present application, the first contact member 420 includes a first supporting portion 421 and a first fitting portion 422 ; the second contact member 430 includes a second supporting portion 431 and a second fitting portion 432 ; and a gap is formed between the first fitting portion 422 and the second fitting portion 432 and the mounting plate 410 .

[0080] The first contact member 420 and the second contact member 430 have the same structure and are symmetrically arranged. The first contact member 420 is taken as an example.

[0081] Reference Figure 8 and Fig. 9 As shown, the first support portion 421 is a structure in which the edge of the mounting plate 410 is bent inwardly, and the width of the first support portion 421 determines the width of the gap. The gap is set to provide installation space for the second fixing member 500.

[0082] The first supporting portion 421 may be disposed perpendicular to a plane direction of the mounting plate 410 .

[0083] The first fitting portion 422 is fixedly connected to the first supporting portion 421 , and the two may be an integrally formed structure.

[0084] The first fitting portion 422 is used to fit and fix with the side wall 110 of the housing 100. The first fitting portion 422 can be arranged parallel to the mounting plate 410.

[0085] In some embodiments of the present application, in order to connect the first fixing member 400 to the side wall 110, a first connecting hole 423 is provided on the first fitting portion 422, and the first fixing member 400 can be installed on the side wall 110 by using fixing members such as screws in cooperation with the first connecting hole 423.

[0086] In some embodiments of the present application, a second connection hole 413 coaxial with the first connection hole 423 is opened at a corresponding position of the mounting plate 410, and screws and other fixing parts are directly connected to the side wall 110 through the second connection hole 413 on the mounting plate 410 and the first connection hole 423 on the first fitting portion 422 in sequence.

[0087] In some embodiments of the present application, the number of the first connecting holes 423 for fixing the first fixing member 400 is four, and the first fitting parts 422 and the second fitting parts 432 are respectively provided with two, and the position of the second connecting hole 413 corresponding to the second connecting hole 413 on the mounting plate 410 is for the top corner, which can effectively improve the fixing strength of the first fixing member 400 and solve the problem that the first fixing member 400 is not firmly fixed.

[0088] In some embodiments of the present application, refer to Fig.10 As shown, the second fixing member 500 includes a connecting tube 510 and a connecting plate 520, wherein the connecting plate 520 is sleeved on the outer peripheral wall of the connecting tube 510; the connecting plate 520 is fixed on the side wall 110 of the shell 100; the connecting tube 510 passes through the side wall 110 of the shell 100 and extends into the installation cavity; the capillary passes through the inner cavity of the connecting tube 510.

[0089] The connection disk 520 is fixed at either end of the connection pipe 510 . The connection pipe 510 is divided into a first branch pipe portion 511 and a second branch pipe portion 512 with the connection disk 520 as a boundary.

[0090] As mentioned Fig.10 Taking the second fixing member 500 as an example, the length of the second branch pipe portion 512 is greater than the length of the first branch pipe portion 511. The first straight pipe portion and the connecting plate 520 are both located outside the installation cavity, that is, outside the side wall 110 of the housing 100; the second branch pipe portion 512 is located inside the installation cavity, and the capillary of the sensor 600 passes through the port 513 of the second branch pipe portion 512, and then passes through the port 513 of the first straight pipe portion to the controller 300.

[0091] In some embodiments of the present application, the inner diameter of the port 513 of the second branch portion 512 gradually decreases in a direction away from the connecting plate 520 so as to better fit the outer diameter of the capillary tube, thereby reducing the air leakage rate of the unit.

[0092] In some embodiments of the present application, a sealing member for sealing the capillary tube and the port 513 is provided at the port 513 of the connecting tube 510 close to the sensor 600 .

[0093] As mentioned Fig.10 Taking the second fixing member 500 shown as an example, a seal is arranged at the port 513 of the second branch pipe portion 512, i.e., the pressure taking port. The seal can be made of sealing tape. The sealing tape wraps the pressure taking port and the capillary tube to seal, thereby reducing the air leakage rate of the unit and solving the problem of subsequent disassembly difficulties.

[0094] In some embodiments of the present application, the connection plate 520 is provided with symmetrical fixing holes, which are used to cooperate with fixing members such as screws to install the second fixing member 500 on the side wall 110. The fixing holes are symmetrically arranged relative to the connection pipe 510.

[0095] In some embodiments of the present application, the second fixing member 500 is further provided with a sealing gasket 530, which is arranged between the connecting plate 520 and the side wall 110 of the shell 100; the sealing gasket 530 is used to seal the gap where the connecting plate 520 and the side wall 110 of the shell 100 meet.

[0096] In some embodiments of the present application, the sealing gasket 530 is provided with a first through hole 521 for the connecting tube 510 to pass through, and the inner diameter of the first through hole 521 is not greater than the outer diameter of the connecting tube 510; the side wall 110 is provided with a second through hole 111 for the connecting tube 510 to pass through, and the inner diameter of the second through hole 111 is not less than the outer diameter of the connecting tube 510.

[0097] During the installation process, the sealing gasket 530 is made of a flexible material and can be sealed with the opening, thereby solving the air leakage problem at the opening and reducing the air leakage rate of the unit.

[0098] The inner diameters of the first through hole 521 and the second through hole 111 are also set to reduce air leakage of the unit.

[0099] In some embodiments of the present application, the sealing gasket 530 is also provided with through holes corresponding to the connecting holes on the connecting plate 520 to facilitate the installation operation of the fixing parts.

[0100] In some embodiments of the present application, an avoidance hole 414 is further provided on the mounting plate 410 . During the installation process, the connecting pipe 510 passes through the avoidance hole 414 to the controller 300 .

[0101] The avoidance hole 414 is in the shape of a long hole. During the installation process, the capillary of the sensor 600 passes through the connecting tube 510 and reaches the controller 300 through the avoidance hole 414. The setting of the long hole shape can adjust the problem of the center of the connecting tube 510 and the controller 300 not being concentric, thereby improving the fault tolerance space.

[0102] The installation process of the controller 300 is as follows:

[0103] According to the size of the unit, determine the coldest area of ​​the cooler 200 on the leeward side of the cooler 200, and then mark the fixing point of the sensor 600;

[0104] A hole is drilled from the inside to the outside on the side wall 110 of the housing 100 using a drill, which is called a second through hole 111;

[0105] The second fixing member 500 is mounted on the side wall 110 , the connecting pipe 510 passes through the second through hole 111 , and a sealing gasket 530 is disposed between the connecting plate 520 and the side wall 110 ;

[0106] The capillary tube of the sensor 600 extends out of the installation cavity through the connecting tube 510;

[0107] Use the self-tapping screws to fix the controller 300 on the first fixing member 400, and then pass the sensor 600 through the anti-scratch connecting tube 510 and extend it into the controller 300;

[0108] The first fixing member 400 is installed on the side wall 110 by using self-tapping screws or the like.

[0109] In some embodiments of the present application, the sensor 600 is installed on the leeward side of the cooler 200 and can be fixed on the cooler 200 by a structure such as a fixing frame.

[0110] In some embodiments of the present application, during the installation process, the coldest area through the cooler 200 is located on the leeward side of the cooler 200 according to the size of the unit, and then the fixing point of the sensor 600 is marked.

[0111] In some embodiments of the present application, during the installation of the sensor 600, the fixing frame is first fixed to the side end plate of the cooler 200 by means of screws or other connectors, and then the capillary of the sensor 600 is fixed to the fixing frame by means of a wire tie. The end of the capillary of the sensor 600 then extends from the fixing frame to the cooler 200 for temperature detection.

[0112] Compared with the prior art, the advantages and positive effects of the utility model are:

[0113] The utility model can conveniently fix the controller 300 and effectively reduce the exposed length of the capillary outside the unit by adding the first fixing member 400 and the second fixing member 500, so that the effective length of the copper tube of the sensor 600 for testing the temperature inside the unit is increased, and the error value of the detection and protection accuracy of the unit is reduced; at the same time, the risk of scratching the capillary is also reduced, and the problem of closed holes is solved. The subsequent unit can replace the antifreeze switch component without damaging the copper tube of the sensor 600, and the operation is also more convenient.

[0114] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0115] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by technicians familiar with the technical field within the technical scope disclosed by 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. Air conditioning unit, including: a housing, wherein a mounting cavity is formed; A surface cooler, which is arranged in the installation cavity, and the surface cooler is used to perform heat exchange with the gas flowing through it; An antifreeze switch is used to control the switch of the circuit according to the temperature of the surface cooler. The antifreeze switch includes a controller and a sensor, wherein the sensor is used to detect the temperature of the surface cooler; The controller is used to receive the temperature of the surface cooler detected by the sensor; Characterized in that the air conditioning unit also includes: A first fixing member, which is disposed on a side wall of the housing; the first fixing member is fixedly connected to the controller; The second fixing member is plugged into the side wall of the shell, and the capillary of the sensor passes through the second fixing member and is connected with the controller.

2. The air conditioning unit according to claim 1, characterized in that: The first fixing member includes a mounting plate and a first contact member and a second contact member that are symmetrically arranged; the first contact member and the second contact member are respectively fixed on both sides of the mounting plate; the mounting plate is provided with a plurality of mounting portions for fixing the controller; the first contact member and the second contact member are in contact with the side wall and are fixedly connected.

3. The air conditioning unit according to claim 2, characterized in that: The installation plate is also provided with a plurality of limiting parts; the plurality of limiting parts form a positioning space, and during the installation process, the controller is embedded in the positioning space.

4. The air conditioning unit according to claim 2, characterized in that: The first contact member and the second contact member are structures bent toward the side wall on both sides of the mounting plate; the first contact member includes a first supporting portion and a first fitting portion; the second contact member includes a second supporting portion and a second fitting portion; and gaps are formed between the first fitting portion and the second fitting portion and the mounting plate.

5. The air conditioning unit according to claim 2, characterized in that: The second fixing member includes a connecting tube and a connecting plate, wherein the connecting plate is sleeved on the outer peripheral wall of the connecting tube; the connecting plate is fixed on the side wall of the shell; the connecting tube passes through the side wall of the shell and extends into the installation cavity; the capillary tube passes through the inner cavity of the connecting tube.

6. The air conditioning unit according to claim 5, characterized in that: The second fixing member is further provided with a sealing gasket, which is arranged between the connecting plate and the side wall of the shell; the sealing gasket is used to seal the gap at the junction of the connecting plate and the side wall of the shell.

7. The air conditioning unit according to claim 6, characterized in that: The sealing gasket is provided with a first through hole for the connecting pipe to pass through, and the inner diameter of the first through hole is not greater than the outer diameter of the connecting pipe; the side wall is provided with a second through hole for the connecting pipe to pass through, and the inner diameter of the second through hole is not less than the outer diameter of the connecting pipe.

8. The air conditioning unit according to claim 5, characterized in that: A sealing member for sealing the capillary tube and the port is arranged at the port of the connecting pipe close to the sensor.

9. The air conditioning unit according to any one of claims 5 to 7, characterized in that: The mounting plate is also provided with an avoidance hole, and during the installation process, the connecting pipe passes through the avoidance hole to the controller.

10. An air conditioning unit, comprising: a housing, wherein a mounting cavity is formed; A surface cooler, which is arranged in the installation cavity, and the surface cooler is used to perform heat exchange with the gas flowing through it; An antifreeze switch is used to control the switch of the circuit according to the temperature of the surface cooler. The antifreeze switch includes a controller and a sensor, wherein the controller is connected to the sensor, the controller is located outside the installation cavity, and the sensor is arranged on the surface cooler; Characterized in that the air conditioning unit also includes: A first fixing member, which is disposed on a side wall of the housing; the first fixing member is fixedly connected to the controller; The second fixing member is plugged into the side wall of the shell, and the capillary of the sensor passes through the second fixing member and is connected with the controller.

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