A type of split-type cabinet air conditioner

Abstract

This utility model discloses a split-type cabinet air conditioner, including an indoor unit and an outdoor unit. The outdoor unit is installed outdoors and includes a mounting shell, an external circulation axial flow fan, a condenser, and a compressor. The indoor unit is installed indoors and includes a casing, an internal circulation centrifugal fan, and an evaporator. The evaporator is fixedly installed inside the casing. An evaporator outlet pipe and an evaporator inlet pipe are provided on one side of the evaporator. The evaporator outlet pipe and the compressor are connected through an airflow pipe. The compressor and the condenser are connected through a condensation pipe. The condenser and the evaporator inlet pipe are connected through a return pipe. The evaporator, compressor, and condenser form a closed-loop refrigeration cycle through pipes. The closed-loop refrigeration cycle is filled with refrigerant, which undergoes alternating liquid and gaseous changes in the closed-loop refrigeration cycle, discharging indoor heat to the outside and achieving indoor cooling. This split-type air conditioner not only has flexible installation location but also effectively exchanges heat between the internal and external circulation, resulting in high cooling efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of refrigeration equipment technology, specifically relating to a split-type cabinet air conditioner. Background Technology

[0002] Air conditioning is a common cooling device in daily life. Over the long term, air conditioning has evolved into different types. Early window air conditioners and portable air conditioners were noisy, complicated and restricted in installation, and the heat dissipation efficiency of the condenser was limited by the narrow installation environment. Indoor and outdoor air could leak out or flow back through the installation gaps, resulting in relatively low cooling efficiency. Central air conditioning is suitable for residential or commercial spaces with large areas, many rooms, and sufficient ceiling height. Not only is the initial cost high, but the installation is also complicated, the operating cost is high, the cleaning of the internal duct system is difficult, the maintenance of the main unit requires high professionalism and is expensive, and its versatility is lacking. Utility Model Content

[0003] To address the aforementioned problems and technical needs, this utility model provides a split-type cabinet air conditioner that adopts a separate indoor unit and outdoor unit design. This design specifically solves the main pain points of other types of air conditioners, making installation more flexible and effectively preventing cross-contamination of internal and external air circulation and heat exchange, resulting in higher cooling efficiency.

[0004] The technical solution of this utility model is as follows: A split-type cabinet air conditioner includes an indoor unit and an outdoor unit. The outdoor unit is installed outdoors and includes a mounting shell, an external circulation axial flow fan, a condenser, and a compressor. The indoor unit is installed indoors and includes a casing, an internal circulation centrifugal fan, and an evaporator. The evaporator is fixedly installed inside the casing. An evaporator outlet pipe and an evaporator inlet pipe are provided on one side of the evaporator. The evaporator outlet pipe and the compressor are connected through an airflow pipe. The compressor and the condenser are connected through a condensation pipe. The condenser and the evaporator inlet pipe are connected through a return pipe. The evaporator, compressor, and condenser form a closed refrigeration cycle through pipes. The closed refrigeration cycle is filled with refrigerant. The refrigerant undergoes alternating liquid and gaseous changes in the closed refrigeration cycle, releasing indoor heat to the outside and achieving indoor cooling.

[0005] Since the external circulation fan generates noise when it is working, and is the main source of noise, it is installed in the outdoor unit to isolate it from the indoor environment. The internal circulation fan in the indoor unit operates relatively quietly, creating a quieter and more comfortable indoor environment.

[0006] Furthermore, a condenser is provided on the rear side of the outdoor unit's mounting housing, and a condensing coil is provided inside the condenser. An external circulation axial flow fan is embedded in the front side of the mounting housing. The external circulation axial flow fan can draw in outdoor air and blow the air over the condenser to dissipate heat from the condensing coil.

[0007] Furthermore, the compressor is fixedly installed inside the mounting housing. The compressor and the external circulation axial flow fan are separated by a vertical plate. The compressor and the condensing coil are connected by multiple condensing pipes. The condensing coil is provided with multiple output pipes, which eventually converge into a main output pipe. The main output pipe is connected to the evaporator through a return pipe.

[0008] Furthermore, a dryer filter and an electronic expansion valve are sequentially connected between the output main pipe and the return pipe via a pipeline. The dryer filter filters impurities from the flowing liquid refrigerant, and the liquid refrigerant undergoes a throttling effect when passing through the electronic expansion valve, continuously reducing temperature and pressure.

[0009] Furthermore, a mounting bracket is provided at the bottom of the mounting housing.

[0010] Furthermore, two internal circulation centrifugal fans are installed side by side inside the casing of the indoor unit, and two air outlet grilles corresponding to the internal circulation centrifugal fans are provided on the front side panel of the casing.

[0011] The beneficial effects of this invention are as follows: Split-type air conditioners move the core components that generate noise and heat, namely the compressor and condenser, to the outdoor installation, perfectly solving the problem of excessive noise from window air conditioners and portable air conditioners. At the same time, they avoid the problems of blocking windows, affecting aesthetics, and being inefficient. Compared with central air conditioning, split-type air conditioners offer lower initial costs, more flexible installation methods, simpler maintenance, and energy-saving advantages with independent room control. For most home rooms, small and medium-sized offices, and other application scenarios that require independent and comfortable temperature control, split-type air conditioners achieve a good balance in terms of performance, noise, cost, flexibility, and aesthetics. Attached Figure Description

[0012] Figure 1 This is a structural diagram of the outdoor unit in a split-type cabinet air conditioner according to this utility model;

[0013] Figure 2 This is a structural diagram of the indoor unit in a split-type cabinet air conditioner according to this utility model;

[0014] The components are labeled as follows: mounting shell 1, vertical plate 11, mounting bracket 12, external circulation axial flow fan 2, condenser 3, condenser pipe 31, condenser coil 32, output pipe 33, compressor 4, output main pipe 5, dryer filter 51, electronic expansion valve 52, cover 6, exhaust grille 61, internal circulation centrifugal fan 7, evaporator 8, evaporator exhaust pipe 81, evaporator inlet pipe 82. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1-2The illustration shows a split-type cabinet air conditioner of this utility model, including an indoor unit and an outdoor unit. The outdoor unit is installed outdoors and includes a mounting shell 1, an external circulation axial flow fan 2, a condenser 3, and a compressor 4. The indoor unit is installed indoors and includes a cover 6, an internal circulation centrifugal fan 7, and an evaporator 8. The evaporator 8 is fixedly installed inside the cover 6. One side of the evaporator 8 is provided with an evaporator outlet pipe 81 and an evaporator inlet pipe 82. The evaporator outlet pipe 81 and the compressor 4 are connected by an airflow pipe (not shown). The compressor 4 and the condenser 3 are connected by a condensation pipe 31. The condenser 3 and the evaporator inlet pipe 82 are connected by a return pipe (not shown). The evaporator 8, the compressor 4, and the condenser 3 form a closed refrigeration cycle through pipes. The closed refrigeration cycle is filled with refrigerant, which undergoes alternating liquid and gaseous changes in the closed refrigeration cycle, releasing indoor heat to the outside and achieving indoor cooling.

[0017] The outdoor unit's mounting housing 1 has a condenser 3 at its rear, with a condensing coil 32 inside. An external circulation axial flow fan 2 is mounted on the front of the mounting housing 1. This fan draws in outdoor air, directing it across the condenser 3 to dissipate heat from the condensing coil 31. A compressor 4 is fixedly mounted inside the mounting housing 1, separated from the external circulation axial flow fan 2 by a vertical plate 11. The compressor 4 and the condensing coil 32 are connected by multiple condensing pipes 31. Multiple output pipes 33 are located on the condensing coil 32, converging into a main output pipe 5. This main output pipe 5 is connected to the evaporator 8 via a return pipe. A mounting bracket 12 is located at the bottom of the mounting housing 1.

[0018] The output main pipe 5 and the return pipe are connected in sequence by a dryer filter 51 and an electronic expansion valve 52. The dryer filter 51 filters impurities from the flowing liquid refrigerant. When the liquid refrigerant passes through the electronic expansion valve 52, it undergoes a throttling effect, continuously reducing temperature and pressure.

[0019] The indoor unit has two internal circulation centrifugal fans 7 installed side by side inside the casing 6, and the front side panel of the casing 6 has two air outlet grilles 61 corresponding to the internal circulation centrifugal fans 7.

[0020] The working principle of this utility model is as follows: After the air conditioner is started, the compressor 4 begins to work. The compressor 4 draws in the low-temperature, low-pressure gaseous refrigerant flowing back from the indoor unit through the airflow pipe. The compressor 4 compresses the refrigerant gas, turning it into a high-temperature, high-pressure gaseous refrigerant, providing power for the refrigerant circulation. The high-temperature, high-pressure gaseous refrigerant is discharged from the compressor and enters the condenser coil 32 inside the condenser 3 through several condensing pipes 31. As the high-temperature, high-pressure refrigerant gas flows through the condenser coil 32, it releases heat to the outdoor air. At the same time, the external circulation axial flow fan 2 operates, drawing air towards the condenser 3, carrying away the heat. As the refrigerant is released, the refrigerant gas gradually cools and condenses, becoming a medium-temperature, high-pressure liquid refrigerant. The liquid refrigerant first passes through the dryer filter 51 to remove impurities, and then passes through the electronic expansion valve 52 where a throttling phenomenon occurs, causing a significant pressure drop. The refrigerant leaving the electronic expansion valve 52 becomes a low-temperature, low-pressure liquid and flows back to the evaporator 8 of the indoor unit through the return pipe. After absorbing heat, the refrigerant liquid in the evaporator 8 rapidly boils and evaporates, becoming a low-temperature, low-pressure gaseous refrigerant again. The indoor hot air loses heat, its temperature drops, and it becomes cold air, which is then blown back into the room by the internal circulation centrifugal fan 7, achieving the effect of indoor cooling.

[0021] The above descriptions are merely several preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations and substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A split type cabinet air conditioner, characterized by: It includes an indoor unit and an outdoor unit. The outdoor unit is installed outdoors and includes a housing, an external circulation axial fan, a condenser, and a compressor. The indoor unit is installed indoors and includes a casing, an internal circulation centrifugal fan, and an evaporator. The evaporator is fixedly installed inside the casing. The evaporator has an evaporator outlet pipe and an evaporator inlet pipe on one side. The evaporator outlet pipe and the compressor are connected by an airflow pipe. The compressor and the condenser are connected by a condensation pipe. The condenser and the evaporator inlet pipe are connected by a return pipe. The evaporator, compressor, and condenser form a closed refrigeration cycle through pipes. The closed refrigeration cycle is filled with refrigerant, which undergoes alternating liquid and gaseous changes in the closed refrigeration cycle, releasing indoor heat to the outside and achieving indoor cooling.

2. The split-type cabinet air conditioner according to claim 1, wherein: The outdoor unit has a condenser at the rear of its mounting housing, which contains a condensing coil. An external circulation axial flow fan is installed on the front side of the mounting housing. The external circulation axial flow fan can draw in outdoor air and blow it over the condenser to dissipate heat from the condensing coil.

3. The split-type cabinet air conditioner according to claim 2, wherein: The compressor is fixedly installed inside the mounting housing. The compressor and the external circulation axial flow fan are separated by a vertical plate. The compressor and the condenser coil are connected by multiple condenser pipes. The condenser coil is equipped with multiple output pipes, which eventually converge into a main output pipe. The main output pipe is connected to the evaporator through a return pipe.

4. A split-type cabinet air conditioner according to claim 3, characterized in that: A dryer filter and an electronic expansion valve are connected in sequence between the output main pipe and the return pipe. The dryer filter filters impurities from the flowing liquid refrigerant, and the liquid refrigerant undergoes a throttling effect when passing through the electronic expansion valve, continuously reducing temperature and pressure.

5. A split-type cabinet air conditioner according to claim 4, characterized in that: The bottom of the mounting housing is provided with a mounting bracket.

6. A split-type cabinet air conditioner according to claim 5, characterized in that: The indoor unit has two internal circulation centrifugal fans installed side by side inside its casing, and two air outlet grilles corresponding to the internal circulation centrifugal fans are provided on the front side panel of the casing.

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