Cabinet air conditioner

Abstract

The embodiment of the present invention provides a cabinet air conditioner, including an air conditioner shell, a refrigeration system, a middle partition and a fresh air device. The air conditioner shell has a receiving chamber; the refrigeration system is installed in the receiving chamber; the middle partition divides the receiving chamber into a first circulation chamber and a second circulation chamber spaced apart from each other, and the middle partition is provided with a drainage hole, and the drainage hole connects the first circulation chamber and the second circulation chamber; the fresh air device includes a fresh air baffle rotatably installed on the middle partition, and the fresh air baffle selectively opens or closes the drainage hole by rotating relative to the middle partition; when the fresh air baffle closes the drainage hole, there is no circulation between the first circulation chamber and the second circulation chamber; when the fresh air baffle opens the drainage hole, the refrigeration system drives air to circulate between the first circulation chamber and the second circulation chamber. The cabinet air conditioner provided by the present invention selectively opens or closes the drainage hole on the fresh air baffle, so that the refrigeration system does not need to be in a refrigeration state all the time, which reduces the energy consumption of the cabinet air conditioner throughout the year and reduces the maintenance cost of the cabinet air conditioner failure.

Description

Technical Field

[0001] The invention relates to the technical field of cabinet air conditioners. Background Art

[0002] At present, cabinet air conditioners have been widely used in industries such as outdoor communication cabinets, highway ETC integrated cabinets, industrial power cabinets and equipment control cabinets. There are generally heat sources such as continuously working servers and electrical components in industrial cabinets. Therefore, cabinet air conditioners are installed on the cabinets to ensure the working temperature of servers and electrical components in the closed cabinets.

[0003] The cabinet air conditioners commonly used in domestic and foreign industries are mainly compressor cooling. Due to the particularity of the industry, the cabinet air conditioners are always in a power supply cooling state throughout the year, resulting in high electricity bills and energy consumption every year. At the same time, due to the long-term operation of the compressor in the cabinet air conditioner, the failure rate is high, so the maintenance cost of the communication cabinet air conditioner is high. Summary of the invention

[0004] The purpose of the embodiment of the present invention is to provide a cabinet air conditioner to solve the above problem. The embodiment of the present invention achieves the above purpose through the following technical solutions.

[0005] The embodiment of the present invention provides a cabinet air conditioner, comprising an air conditioner housing, a refrigeration system, a middle partition and a fresh air device. The air conditioner housing has a receiving chamber; the refrigeration system is installed in the receiving chamber; the middle partition divides the receiving chamber into a first circulation chamber and a second circulation chamber spaced apart from each other, the middle partition is provided with a drainage hole, and the drainage hole connects the first circulation chamber and the second circulation chamber; the fresh air device comprises a fresh air baffle rotatably mounted on the middle partition, the fresh air baffle selectively opens or closes the drainage hole by rotating relative to the middle partition; when the fresh air baffle closes the drainage hole, the first circulation chamber and the second circulation chamber are not circulated; when the fresh air baffle opens the drainage hole, the refrigeration system drives air to circulate between the first circulation chamber and the second circulation chamber.

[0006] In one embodiment, the fresh air device also includes a fresh air drive motor, which is mechanically connected to the fresh air baffle and is used to drive the fresh air baffle to rotate relative to the middle partition; the cabinet air conditioner also includes a control circuit, which is connected to the fresh air drive motor signal to control whether the fresh air drive motor is started.

[0007] In one embodiment, the cabinet air conditioner also includes a temperature comparison circuit, which is used to compare the temperature difference between the first circulation chamber and the second circulation chamber. The temperature comparison circuit is connected to the control circuit signal, and the control circuit controls whether the fresh air drive motor is started according to the comparison result of the temperature comparison circuit.

[0008] In one embodiment, the temperature comparison circuit includes a first temperature sensor, a second temperature sensor and a comparator, the comparator is connected to the first temperature sensor, the second temperature sensor and the control circuit signal, the first temperature sensor is used to measure the first temperature value in the first circulation chamber, the second temperature sensor is used to measure the second temperature value in the second circulation chamber, the comparator is used to compare the first temperature value with the second temperature value, when the first temperature value is greater than the second temperature value, the comparator sends a first signal, and the control circuit controls the fresh air drive motor to start and drive the fresh air baffle to open the drainage hole according to the first signal; when the first temperature value is less than or equal to the second temperature value, the comparator sends a second signal, and the control circuit controls the fresh air drive motor to turn off according to the second signal, so that the fresh air baffle closes the drainage hole.

[0009] In one embodiment, the fresh air baffle includes a first baffle and a second baffle connected to each other. When the fresh air baffle selectively opens the drainage hole by rotating relative to the middle partition, the first baffle separates the first circulation chamber into a first upper circulation chamber and a first lower circulation chamber, and the second baffle separates the second circulation chamber into a second upper circulation chamber and a second lower circulation chamber. The first upper circulation chamber is connected to the second upper circulation chamber through the drainage hole, and the first lower circulation chamber is connected to the second lower circulation chamber through the drainage hole.

[0010] In one embodiment, when the fresh air baffle selectively opens the drainage hole by rotating relative to the middle partition, the first baffle intersects with the middle partition at an angle and contacts with the air conditioner casing; the second baffle is parallel to the first baffle and contacts with the air conditioner casing.

[0011] In one embodiment, the refrigeration system includes a compressor, a condenser and an evaporator, the condenser and the evaporator are both connected to the compressor airflow, the cabinet air conditioner also includes a first circulation centrifugal fan and a second circulation centrifugal fan, the evaporator and the first circulation centrifugal fan are installed in a first circulation chamber, the first circulation centrifugal fan is used to guide external air into the first circulation chamber; the condenser, the compressor and the second circulation centrifugal fan are installed in the second circulation chamber, and the second circulation centrifugal fan is used to guide external air into the second circulation chamber.

[0012] In one embodiment, when the fresh air baffle opens the drainage hole by rotating relative to the middle partition, the first circulation centrifugal fan guides the external air into the first circulation chamber, and is discharged from the second circulation chamber through the drainage hole and the condenser in sequence; the second circulation centrifugal fan guides the external air into the second circulation chamber, and is discharged from the first circulation chamber through the drainage hole and the evaporator in sequence; when the fresh air baffle closes the drainage hole by rotating relative to the middle partition, the first circulation centrifugal fan guides the external air into the first circulation chamber, and is discharged from the first circulation chamber through the evaporator; the second circulation centrifugal fan guides the external air into the second circulation chamber, and is discharged from the second circulation chamber through the condenser.

[0013] In one embodiment, the cabinet air conditioner further includes a filtering device, which is installed on the air conditioner casing and corresponds to the second circulation centrifugal fan.

[0014] In one embodiment, the cabinet air conditioner also includes a control circuit, which is connected to the compressor, the first circulation centrifugal fan, the second circulation centrifugal fan and the fresh air device by signal. When the control circuit controls the fresh air baffle to close the drainage hole by rotating relative to the middle partition, the control circuit controls the compressor, the first circulation centrifugal fan and the second circulation centrifugal fan to start; when the control circuit controls the fresh air baffle to open the drainage hole by rotating relative to the middle partition, the control circuit controls the compressor to shut down, and controls the first circulation centrifugal fan and the second circulation centrifugal fan to start.

[0015] Compared with the prior art, the cabinet air conditioner provided by the present invention controls the refrigeration system to drive air to circulate between the first circulation chamber and the second circulation chamber when the fresh air baffle opens the drainage hole; when the fresh air baffle closes the drainage hole, there is no circulation between the first circulation chamber and the second circulation chamber, and the first circulation chamber and the second circulation chamber are respectively connected to the outside world, so that the refrigeration system does not need to be in a cooling state all the time, reducing the energy consumption and fault maintenance costs of the cabinet air conditioner.

[0016] These and other aspects of the present invention will become more apparent from the following description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the cabinet air conditioner provided by an embodiment of the present invention from a viewing angle.

[0019] Figure 2 It is a schematic structural diagram of the cabinet air conditioner provided by an embodiment of the present invention from another perspective.

[0020] Figure 3 It is a structural schematic diagram of a cabinet air conditioner provided by an embodiment of the present invention in a compressor cooling mode.

[0021] Figure 4 It is a structural schematic diagram of the cabinet air conditioner provided by an embodiment of the present invention in the fresh air energy-saving mode.

[0022] Figure 5It is a connection diagram of the control circuit provided in an embodiment of the present invention and a compressor, a first circulation centrifugal fan, a second circulation centrifugal fan, a fresh air drive motor, a first temperature sensor and a second temperature sensor. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the embodiments of the present invention, the embodiments of the present invention will be described more comprehensively with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the embodiments of the present invention herein are only for the purpose of describing specific implementations and are not intended to limit the present invention.

[0025] See also Figure 1 , Figure 2 and Figure 3 The embodiment of the present invention provides a cabinet air conditioner 1, comprising an air conditioner housing 10, a refrigeration system 20, a middle partition 30 and a fresh air device 40. The air conditioner housing 10 has a receiving chamber 11; the refrigeration system 20 is installed in the receiving chamber 11; the middle partition 30 divides the receiving chamber 11 into a first circulation chamber 111 and a second circulation chamber 112 spaced apart from each other, and the middle partition 30 is provided with a drainage hole 31, and the drainage hole 31 connects the first circulation chamber 111 and the second circulation chamber 112; the fresh air device 40 comprises a fresh air baffle 42 rotatably mounted on the middle partition 30, and the fresh air baffle 42 selectively opens or closes the drainage hole 31 by rotating relative to the middle partition 30; when the fresh air baffle 42 closes the drainage hole 31, there is no air flow between the first circulation chamber 111 and the second circulation chamber 112; when the fresh air baffle 42 opens the drainage hole 31, the refrigeration system 20 drives air to flow between the first circulation chamber 111 and the second circulation chamber 112.

[0026] The cabinet air conditioner 1 can be installed in a cabinet to cool the heating device in the cabinet and increase the service life of the heating device. Specifically, the cabinet air conditioner 1 can absorb the heat generated by the heating device and discharge it to the external environment, and can also deliver cold air into the cabinet to reduce the temperature of the heating device.

[0027] See also Figure 2 and Figure 3In this embodiment, the air conditioner housing 10 is a substantially hollow rectangular parallelepiped structure. Specifically, the air conditioner housing 10 includes an upper cover plate 12, a lower cover plate 13, a front cover plate 14, a rear cover plate 15, a first side cover plate 16, and a second side cover plate 17, wherein the front cover plate 14, the rear cover plate 15, the first side cover plate 16, and the second side cover plate 17 are connected end to end, the upper cover plate 12 and the lower cover plate 13 are parallel and opposite, the front cover plate 14 and the rear cover plate 15 are parallel and opposite, and the first side cover plate 16 and the second side cover plate 17 are parallel and opposite. The accommodating cavity 11 is formed by enclosing the front cover plate 14, the first side cover plate 16, the rear cover plate 15, and the second side cover plate 17. In this embodiment, the middle partition plate 30 is substantially parallel to the front cover plate 14 and the rear cover plate 15. The first circulation chamber 111 is formed by the front cover plate 14, the first side cover plate 16, the second side cover plate 17 and the middle partition plate 30; the second circulation chamber 112 is formed by the rear cover plate 15, the first side cover plate 16, the second side cover plate 17 and the middle partition plate 30, and is connected to the first circulation chamber 111 through the drainage hole 31.

[0028] Please continue reading Figure 1 , Figure 2 and Figure 3 The air conditioner housing 10 further includes a first inner air guide plate 18, a second inner air guide plate 19, a first outer air guide plate 101 and a second outer air guide plate 102. The first inner air guide plate 18 is connected between the middle partition plate 30 and the front cover plate 14 and connected to the first side cover plate 16, and the first inner air guide plate 18 is parallel to the rotation axis of the fresh air baffle 42; the second inner air guide plate 19 is connected between the middle partition plate 30 and the front cover plate 14 and connected to the second side cover plate 17, there is a gap between the second inner air guide plate 19 and the first inner air guide plate 18, and the gap between the second inner air guide plate 19 and the first inner air guide plate 18 is equal to the width of the fresh air baffle 42. The first outer air guide plate 101 is connected between the middle partition plate 30 and the rear cover plate 15 and is connected to the first side cover plate 16, and the first outer air guide plate 101 is connected to the first inner air guide plate 18; the second outer air guide plate 102 is connected between the middle partition plate 30 and the rear cover plate 15 and is connected to the second side cover plate 17, there is a gap between the second outer air guide plate 102 and the first outer air guide plate 101, and the distance between the second outer air guide plate 102 and the first outer air guide plate 101 is equal to the width of the fresh air baffle 42.

[0029] The refrigeration system 20 includes a compressor 21, a condenser 23 and an evaporator 25. The condenser 23 and the evaporator 25 are both connected to the compressor 21 by airflow. The compressor 21 is used to extract the vapor in the evaporator 25, maintain low temperature and low pressure, and increase the pressure and temperature of the refrigerant vapor by compression, and transfer the heat of the refrigerant vapor to the external environment medium. That is, the compressor 21 can compress the low-temperature and low-pressure refrigerant vapor to a high-temperature and high-pressure state; the compressor 21 is installed in the second circulation chamber 112. The evaporator 25 is installed in the first circulation chamber 111, and can use the environmental cooling medium (such as air or water) to take away the heat of the high-temperature and high-pressure refrigeration vapor from the compressor 21, so that the high-temperature and high-pressure refrigerant vapor is cooled and condensed into a high-pressure and normal-temperature refrigerant liquid, and the cooled cold air is blown to the heating device. The condenser 23 is installed in the second circulation chamber 112. The condenser 23 is used to evaporate the refrigerant liquid into vapor, absorb the heat of the cooled substance, reduce the temperature of the substance, and discharge the heat in the air-conditioning cabinet to the external environment.

[0030] The cabinet air conditioner 1 further includes a first circulation centrifugal fan 50 and a second circulation centrifugal fan 60. The first circulation centrifugal fan 50 is installed in the first circulation chamber 111 and is used to guide external air into the first circulation chamber 111, thereby absorbing the heat emitted by the heating device. The second circulation centrifugal fan 60 is installed in the second circulation chamber 112 and is used to guide external air into the second circulation chamber 112.

[0031] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The fresh air baffle 42 is a roughly rectangular plate-shaped structure. The fresh air baffle 42 includes a first baffle 421 and a second baffle 423 connected to each other. When the fresh air baffle 42 selectively opens the drainage hole 31 by rotating relative to the middle partition 30, the first baffle 421 intersects with the middle partition 30 at an angle and contacts with the air-conditioning housing 10, and separates the first circulation chamber 111 into a first upper circulation chamber 1112 and a first lower circulation chamber 1114. Specifically, the first baffle 421 is connected between the first inner air guide plate 18 and the second inner air guide plate 19. The second baffle 423 is parallel to the first baffle 421 and contacts with the air-conditioning housing 10, and separates the second circulation chamber 112 into a second upper circulation chamber 1122 and a second lower circulation chamber 1124. Specifically, the second baffle 423 is connected between the first outer air guide plate 101 and the second outer air guide plate 102. In this embodiment, the first upper circulation chamber 1112 is connected to the second upper circulation chamber 1122 through the drainage hole 31, and the first lower circulation chamber 1114 is connected to the second lower circulation chamber 1124 through the drainage hole 31. Figure 3As shown, when the fresh air baffle 42 closes the drainage hole 31, the fresh air baffle 42 is parallel to the middle partition 30 and corresponds to the drainage hole 31, where the correspondence means that the size of the fresh air baffle 42 is the same as the size of the drainage hole 31. Figure 4 As shown, when the fresh air baffle 42 opens the drainage hole 31, there is an angle between the fresh air baffle 42 and the middle partition 30. Specifically, when the fresh air baffle 42 opens the drainage hole 31 and contacts both the front cover 14 and the rear cover 15, the fresh air baffle 42 also contacts the first inner air guide plate 18, the second inner air guide plate 19, the first outer air guide plate 101 and the second outer air guide plate 102, thereby dividing the receiving chamber 11 into a third circulation chamber 113 and a fourth circulation chamber 114, wherein the third circulation chamber 113 is formed by the first inner air guide plate 18, the second inner air guide plate 19, the first outer air guide plate 101, the second outer air guide plate 102, the middle partition plate 30, the front cover plate 14, the rear cover plate 15, the first side cover plate 16, the second side cover plate 17 and the upper cover plate 12 form a fourth circulation chamber 114, which is formed by the first inner air guide plate 18, the second inner air guide plate 19, the first outer air guide plate 101, the second outer air guide plate 102, the middle partition plate 30, the front cover plate 14, the rear cover plate 15, the first side cover plate 16, the second side cover plate 17 and the lower cover plate 13.

[0032] The fresh air device 40 further includes a fresh air drive motor 44, which is mechanically connected to the fresh air baffle 42 and is used to drive the fresh air baffle 42 to rotate relative to the middle partition 30. Specifically, the fresh air baffle 42 can be mounted on the output shaft of the fresh air drive motor 44, and the axis of the output shaft is parallel to the length direction of the fresh air baffle 42, and the output shaft is arranged in the middle position of the fresh air baffle 42.

[0033] See also Figure 2 , Figure 3 and Figure 5 The cabinet air conditioner 1 also includes a control circuit 70 and a temperature comparison circuit 80. The temperature comparison circuit 80 is used to compare the temperature difference between the first circulation chamber 111 and the second circulation chamber 112. The temperature comparison circuit 80 is connected to the control circuit 70 by signal; the control circuit 70 controls whether the fresh air drive motor 44 is started according to the comparison result of the temperature comparison circuit 80.

[0034] The control circuit 70 is connected to the compressor 21, the first circulation centrifugal fan 50, the second circulation centrifugal fan 60 and the fresh air device 40 by signal. Specifically, the control circuit 70 is connected to the fresh air drive motor 44 by signal to control whether the fresh air drive motor 44 is started. When the control circuit 70 controls the fresh air drive motor 44 to turn off so that the fresh air baffle 42 closes the drainage hole 31 by rotating relative to the middle partition 30, the control circuit 70 controls the compressor 21, the first circulation centrifugal fan 50 and the second circulation centrifugal fan 60 to start. At this time, the cabinet air conditioner 1 is in the compressor 21 cooling mode, the first circulation centrifugal fan 50 guides the external air into the first circulation chamber 111, and discharges it from the first circulation chamber 111 through the evaporator 25, and the second circulation centrifugal fan 60 guides the external air into the second circulation chamber 112, and discharges it from the second circulation chamber 112 through the condenser 23. When the control circuit 70 controls the fresh air drive motor 44 to start and drives the fresh air baffle 42 to open the drainage hole 31 by rotating relative to the middle partition 30, the control circuit 70 controls the compressor 21 to turn off, and controls the first circulation centrifugal fan 50 and the second circulation centrifugal fan 60 to start, and the cabinet air conditioner 1 is in the fresh air energy-saving mode. At this time, the first circulation centrifugal fan 50 guides the external air into the first circulation chamber 111, and is discharged from the second circulation chamber 112 through the drainage hole 31 and the condenser 23 in turn. The second circulation centrifugal fan 60 guides the external air into the second circulation chamber 112, and is discharged from the first circulation chamber 111 through the drainage hole 31 and the evaporator 25 in turn.

[0035] The temperature comparison circuit 80 includes a first temperature sensor 81, a second temperature sensor 82 and a comparator. The comparator is connected to the first temperature sensor 81, the second temperature sensor 82 and the control circuit 70 by signal. The first temperature sensor 81 is used to measure the first temperature value in the first circulation chamber 111, the second temperature sensor 82 is used to measure the second temperature value in the second circulation chamber 112, and the comparator is used to compare the first temperature value with the second temperature value. When the first temperature value is greater than the second temperature value, the comparator sends a first signal, and the control circuit 70 controls the fresh air drive motor 44 to start and drive the fresh air baffle 42 to open the drainage hole 31 according to the first signal. When the first temperature value is less than or equal to the second temperature value, the comparator sends a second signal, and the control circuit 70 controls the fresh air drive motor 44 to close according to the second signal, so that the fresh air baffle 42 closes the drainage hole 31.

[0036] The second temperature sensor 82 is also used to detect whether the compressor 21 fails. Specifically, when the second temperature sensor 82 detects that the temperature in the second circulation chamber 112 is greater than the preset temperature value, the control circuit 70 controls the fresh air baffle 42 to rotate and open the drainage hole 31, and controls the first circulation centrifugal fan 50 and the second circulation centrifugal fan 60 to start, that is, the cabinet air conditioner 1 is in the fresh air energy-saving mode.

[0037] In this embodiment, the cabinet air conditioner 1 further includes a filter device 90, which is installed on the air conditioner housing 10 and corresponds to the second circulation centrifugal fan 60. The filter device 90 can effectively reduce the dust particles entering the cabinet air conditioner 1. In this embodiment, the filter device 90 can be a filter net. In other embodiments, the filter device 90 can also be a filter membrane or other structure with the function of filtering dust particles.

[0038] See also Figure 1 , Figure 3 , Figure 4 The working principle of the cabinet air conditioner 1 provided by the present invention is described below from the perspectives of the compressor 21 cooling mode and the fresh air energy-saving mode:

[0039] 1. Rack air conditioner 1 is in compressor 21 cooling mode

[0040] See also Figure 1 and Figure 3 , the first temperature value is less than or equal to the second temperature value, the comparator sends a second signal, and the control circuit 70 controls the fresh air drive motor 44 to close according to the second signal, so that the fresh air baffle 42 closes the drainage hole 31 by rotating relative to the middle partition plate 30. The control circuit 70 controls the compressor 21, the first circulation centrifugal fan 50 and the second circulation centrifugal fan 60 to start. The first circulation centrifugal fan 50 guides the external air into the first circulation chamber 111 and discharges it from the first circulation chamber 111 through the evaporator 25, that is, the first circulation centrifugal fan 50 draws air from the cabinet and then blows the cooled cold air into the cabinet after evaporation and heat absorption through the evaporator 25, thereby forming the first circulation airflow path of the refrigeration mode of the compressor 21; the second circulation centrifugal fan 60 guides the external air into the second circulation chamber 112 and discharges it from the second circulation chamber 112 through the condenser 23, that is, the air in the outdoor environment is blown to the condenser 23 by the second circulation centrifugal fan 60 through the filter device 90, and the heat in the condenser 23 is discharged to the atmosphere, thereby forming the second circulation airflow path of the refrigeration mode of the compressor 21. The refrigeration mode of the compressor 21 realizes the cooling of the heating device in the refrigeration mode of the compressor 21 through the first circulation airflow path and the second circulation airflow path, thereby improving the service life of the heating device.

[0041] 2. Cabinet air conditioner 1 is in fresh air energy-saving mode

[0042] See also Figure 1 and Figure 4, when the first temperature value is greater than the second temperature value, that is, when the temperature in the cabinet is higher than the outdoor ambient temperature, the comparator sends a first signal, and the control circuit 70 controls the fresh air drive motor 44 to start according to the first signal and drives the fresh air baffle 42 to open the drainage hole 31 by rotating relative to the middle partition 30, and the cabinet air conditioner 1 is in the fresh air energy-saving mode. The control circuit 70 controls the compressor 21 to turn off, and controls the first circulation centrifugal fan 50 and the second circulation centrifugal fan 60 to start. At this time, the first circulation centrifugal fan 50 guides the external air into the first circulation chamber 111, and discharges it from the second circulation chamber 112 through the drainage hole 31 and the condenser 23 in sequence, so as to discharge the heat in the cabinet to the outdoor atmosphere, thereby forming the third circulation airflow path of the fresh air energy-saving mode; the second circulation centrifugal fan 60 guides the external air into the second circulation chamber 112, and discharges it from the first circulation chamber 111 through the drainage hole 31 and the evaporator 25 in sequence, so as to introduce the fresh air from the outdoor environment into the cabinet air conditioner 1, thereby forming the fourth circulation airflow path of the fresh air energy-saving mode. The fresh air energy-saving mode introduces fresh air into the cabinet through the third circulation airflow path and the fourth circulation airflow path, and discharges the heat in the cabinet, which can also cool the heating device and increase the service life of the heating device. Since the compressor 21 in the fresh air energy-saving mode is in the off state, that is, the refrigeration system 20 does not need to be in the refrigeration state all the time, the annual energy consumption of the cabinet air conditioner 1 is reduced, and the maintenance cost of the cabinet air conditioner 1 is reduced.

[0043] When the compressor 21 fails to work, that is, the second temperature sensor 82 detects that the temperature in the second circulation chamber 112 is greater than the preset temperature value, the control circuit 70 controls the fresh air baffle 42 to rotate and open the drainage hole 31, and the cabinet air conditioner 1 is in the fresh air energy-saving mode. The heat dissipation and temperature control of the equipment in the cabinet can still be achieved, thereby reducing the safety problem of temperature control failure of the equipment in the cabinet due to the failure of the refrigeration system 20 of the cabinet air conditioner 1.

[0044] In summary, the cabinet air conditioner 1 provided by the present invention controls the refrigeration system 20 to drive air to circulate between the first circulation chamber 111 and the second circulation chamber 112 when the fresh air baffle 42 opens the drainage hole 31; when the fresh air baffle 42 closes the drainage hole 31, there is no circulation between the first circulation chamber 111 and the second circulation chamber 112, and the first circulation chamber 111 and the second circulation chamber 112 are respectively connected to the outside world, so that the refrigeration system 20 does not need to be in a cooling state all the time, thereby reducing the energy consumption and fault maintenance cost of the cabinet air conditioner 1.

[0045] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A cabinet air conditioner, characterized in that: include: An air conditioner housing, wherein the air conditioner housing has a receiving cavity; A refrigeration system, the refrigeration system is installed in the receiving cavity; the refrigeration system includes a compressor, a condenser and an evaporator, the condenser and the evaporator are both in airflow communication with the compressor, the cabinet air conditioner also includes a first circulation centrifugal fan and a second circulation centrifugal fan, the evaporator and the first circulation centrifugal fan are installed in the first circulation cavity, and the first circulation centrifugal fan is used to guide external air into the first circulation cavity; The condenser, the compressor and the second circulation centrifugal fan are installed in the second circulation cavity, and the second circulation centrifugal fan is used to guide external air into the second circulation cavity; A middle partition, wherein the middle partition divides the receiving cavity into a first circulation cavity and a second circulation cavity which are spaced apart from each other, and the middle partition is provided with a drainage hole, wherein the drainage hole connects the first circulation cavity and the second circulation cavity; and A fresh air device, the fresh air device comprising a fresh air baffle rotatably mounted on the middle partition, the fresh air baffle selectively opening or closing the drainage hole by rotating relative to the middle partition; when the fresh air baffle closes the drainage hole, no air circulates between the first circulation chamber and the second circulation chamber; when the fresh air baffle opens the drainage hole, the refrigeration system drives air to circulate between the first circulation chamber and the second circulation chamber; the fresh air device also comprises a fresh air drive motor, the fresh air drive motor is mechanically connected to the fresh air baffle, and is used to drive the fresh air baffle to rotate relative to the middle partition; the cabinet air conditioner also comprises a control circuit, and the control circuit is connected to the fresh air drive motor signal to control whether the fresh air drive motor is started; A temperature comparison circuit, the temperature comparison circuit is used to compare the temperature difference between the first circulation chamber and the second circulation chamber, the temperature comparison circuit is connected to the control circuit signal, and the control circuit controls whether the fresh air drive motor is started according to the comparison result of the temperature comparison circuit; the temperature comparison circuit includes a first temperature sensor, a second temperature sensor and a comparator, the comparator is connected to the first temperature sensor, the second temperature sensor and the control circuit signal, the first temperature sensor is used to measure a first temperature value in the first circulation chamber, the second temperature sensor is used to measure a second temperature value in the second circulation chamber, the comparator is used to compare the first temperature value with the second temperature value, when the first temperature value is less than or equal to the second temperature value, the comparator sends a second signal, and the control circuit controls the fresh air drive motor to turn off according to the second signal, so that the fresh air baffle closes the drainage hole; when the first temperature value is greater than the second temperature value, the comparator sends a first signal, and the control circuit controls the fresh air drive motor to start according to the first signal and drives the fresh air baffle to open the drainage hole; The cabinet air conditioner is in the fresh air energy-saving mode, the control circuit controls the compressor to turn off, and controls the first circulation centrifugal fan and the second circulation centrifugal fan to start, at this time, the first circulation centrifugal fan guides the external air into the first circulation cavity, and discharges it from the second circulation cavity through the drainage hole and the condenser in sequence, so as to discharge the heat in the cabinet to the outdoor atmosphere, thereby forming the third circulation airflow path of the fresh air energy-saving mode; The second circulation centrifugal fan guides external air into the second circulation chamber, and is discharged from the first circulation chamber through the drainage holes and the evaporator in sequence, so as to introduce fresh air from the outdoor environment into the cabinet air conditioner, thereby forming the fourth circulation airflow path of the fresh air energy-saving mode; when the second temperature sensor detects that the temperature in the second circulation chamber is greater than the preset temperature value, the control circuit controls the fresh air baffle to rotate and open the drainage holes, and the cabinet air conditioner is in the fresh air energy-saving mode.

2. The cabinet air conditioner according to claim 1, characterized in that: The fresh air baffle includes a first baffle and a second baffle connected to each other. When the fresh air baffle selectively opens the drainage hole by rotating relative to the middle partition, the first baffle separates the first circulation chamber into a first upper circulation chamber and a first lower circulation chamber, and the second baffle separates the second circulation chamber into a second upper circulation chamber and a second lower circulation chamber. The first upper circulation chamber is connected to the second upper circulation chamber through the drainage hole, and the first lower circulation chamber is connected to the second lower circulation chamber through the drainage hole.

3. The cabinet air conditioner according to claim 2, characterized in that: When the fresh air baffle selectively opens the drainage hole by rotating relative to the middle partition, the first baffle intersects with the middle partition at an angle and contacts with the air-conditioning shell, and the second baffle is parallel to the first baffle and contacts with the air-conditioning shell.

4. The cabinet air conditioner according to claim 1, characterized in that: When the fresh air baffle closes the drainage hole by rotating relative to the middle partition, the first circulation centrifugal fan guides external air into the first circulation chamber and is discharged from the first circulation chamber through the evaporator; The second circulation centrifugal fan guides external air into the second circulation chamber, and the air is discharged from the second circulation chamber through the condenser.

5. The cabinet air conditioner according to claim 1, characterized in that: The cabinet air conditioner further comprises a filtering device, which is installed on the air conditioner casing and corresponds to the second circulating centrifugal fan.

6. The cabinet air conditioner according to claim 1, characterized in that: The cabinet air conditioner also includes a control circuit, which is signal-connected to the compressor, the first circulating centrifugal fan, the second circulating centrifugal fan and the fresh air device. When the control circuit controls the fresh air baffle to close the drainage hole by rotating relative to the middle partition, the control circuit controls the compressor, the first circulating centrifugal fan and the second circulating centrifugal fan to start; when the control circuit controls the fresh air baffle to open the drainage hole by rotating relative to the middle partition, the control circuit controls the compressor to shut down, and controls the first circulating centrifugal fan and the second circulating centrifugal fan to start.

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