Unitary air conditioning unit

Abstract

This disclosure relates to the field of air conditioning, and particularly to a unitary air conditioning unit. The unitary air conditioning unit includes a compressor (10), an evaporator (2), a condenser (3), and a housing (9), wherein the housing (9) has an internal receiving cavity comprising multiple chambers, and the compressor (10), the condenser (3), and the evaporator (2) are respectively located in different chambers among the multiple chambers. Embodiments of this disclosure can improve explosion-proof performance and cooling performance.

Description

Technical Field

[0001] This disclosure relates to the field of air conditioning, and in particular to a unitary air conditioning unit. Background Technology

[0002] In underground work spaces, the ambient temperature increases with depth, and the equipment generates significant heat during operation, further raising the temperature. For personnel health, air conditioning is necessary to reduce temperature and humidity. Furthermore, some underground work spaces, such as mines and tunnels, may contain explosive gases, requiring air conditioning systems with excellent explosion-proof properties.

[0003] In some related technologies, a refrigeration unit located outside the underground work space provides chilled water, which is then transported to an air cooler inside the underground work space via insulated pipes. In the air cooler, the chilled water exchanges heat with the airflow, losing its cooling capacity, while the airflow gains cooling capacity, thus cooling and dehumidifying the underground work space. However, this method results in significant energy loss due to the numerous heat exchange cycles, and the cooling loss increases as the underground work space is advanced. Furthermore, it requires continuous relocation of the air cooler and the laying of new pipes, leading to extremely high costs.

[0004] In other related technologies, unit air conditioners are used in underground working spaces. However, due to the close proximity of the condenser, evaporator, and compressor, there are problems such as heat and vibration affecting each other, leading to hot and cold air leakage. There is also the problem that flammable and explosive gases or dust in the environment can easily enter the compressor and cause an explosion, making it difficult to effectively meet the requirements for explosion protection and refrigeration. Utility Model Content

[0005] In view of this, the present disclosure provides a unitary air conditioning unit that can improve explosion-proof performance and cooling performance.

[0006] In one aspect of this disclosure, a unitary air conditioning unit is provided, comprising a compressor, an evaporator, a condenser, and a housing, wherein:

[0007] The housing has an internal accommodating cavity, which includes multiple chambers. The compressor, the condenser, and the evaporator are located in different chambers of the multiple chambers.

[0008] In some embodiments, the unitary air conditioning unit further includes:

[0009] A partition assembly is disposed within the receiving cavity to divide the receiving cavity into a plurality of chambers, the plurality of chambers including a compression chamber for receiving the compressor, an evaporation chamber for receiving the evaporator, and a condensation chamber for receiving the condenser;

[0010] The compression chamber and the evaporation chamber are both located on the opposite side of the condensation chamber along a first direction, which is perpendicular to the vertical direction, and the compression chamber and the evaporation chamber are arranged along the vertical direction.

[0011] In some embodiments, the evaporation chamber is located above the compression chamber.

[0012] In some embodiments, the partition assembly includes a first partition located between the evaporation chamber and the compression chamber, the first partition having a water receiving tray.

[0013] In some embodiments, the condenser is disposed obliquely in the condensation chamber, and the baffle assembly includes a first baffle located between the evaporation chamber and the compression chamber, with a portion of the condenser located above the plane of the first baffle and another portion located below the plane of the first baffle.

[0014] In some embodiments, the evaporator is disposed at an angle within the evaporation chamber.

[0015] In some embodiments, the unitary air conditioning unit further includes:

[0016] An explosion-proof electrical control box is installed in the condensation chamber and is fixedly connected to the housing.

[0017] The explosion-proof electrical control box is equipped with a heat sink, and the explosion-proof electrical control box exchanges heat with the condenser through the heat sink to cool down the electronic components inside the explosion-proof electrical control box.

[0018] In some embodiments, the unitary air conditioning unit further includes:

[0019] A first fan is disposed in the condensation chamber. The housing has an air outlet. The first fan discharges the heat of the condenser through the air outlet, wherein the air outlet is vertically arranged.

[0020] In some embodiments, the housing has an air inlet, which is disposed on a first sidewall and a second sidewall in a second direction, and on a third sidewall in a first direction away from the evaporation chamber. The air inlet includes:

[0021] The first air inlet, which is formed on the first sidewall, is located in the area between the condenser and the third sidewall;

[0022] A second air inlet is formed on the second sidewall, located in the area between the condenser and the third sidewall; and

[0023] A third air inlet is provided on the third side wall, and the third air inlet is provided at a position not higher than the projection of the condenser on the third side wall.

[0024] In some embodiments, the unitary air conditioning unit further includes:

[0025] A second fan is installed in the evaporation chamber. The housing has an air outlet, and the second fan supplies air to the working surface through the air outlet, wherein the air outlet is horizontally positioned.

[0026] In some embodiments, the housing is further provided with a return air inlet, and the air supply inlet and the return air inlet are disposed on a fourth side wall away from the condensation chamber in a first direction.

[0027] In some embodiments, the housing is provided with lifting lugs.

[0028] In some embodiments, the unitary air conditioning unit is an explosion-proof air conditioning unit for underground work spaces.

[0029] In some embodiments, the compressor comprises, in sequence:

[0030] An explosion-proof junction box, wherein a motor terminal block is provided in the explosion-proof junction box;

[0031] The upper body, wherein the explosion-proof junction box is sealed to the upper body; and

[0032] The lower body is sealed to the upper body.

[0033] In some embodiments, the explosion-proof junction box includes a cover plate and an explosion-proof junction box body. The cover plate covers the explosion-proof junction box body, and the cover plate and the explosion-proof junction box body are fastened together by a first fastener. The contact surfaces of the cover plate and the explosion-proof junction box body are coated with a sealant.

[0034] The explosion-proof junction box and the upper body are fastened together by a second fastener, and the contact surfaces of the explosion-proof junction box and the upper body are coated with sealant.

[0035] In some embodiments, the motor terminal block includes an upper power terminal, a lower power terminal, an upper temperature measuring terminal, and a lower temperature measuring terminal, wherein the upper temperature measuring terminal and the lower temperature measuring terminal are used to monitor the temperature inside the compressor.

[0036] In some embodiments, the number of the upper temperature measuring terminals is at least two.

[0037] According to the embodiments of this disclosure, by housing the compressor, condenser and evaporator in different cavities, it is beneficial to reduce the possibility of flammable and explosive gases or dust in the environment entering the compressor, thereby improving the explosion-proof performance of the air conditioning unit. At the same time, it can also reduce the mutual influence between the compressor condenser and evaporator in terms of heat and vibration, which is beneficial to improve the heat exchange efficiency of the evaporator and reduce or eliminate the situation of hot and cold gas leakage, thereby improving the cooling performance of the unitary air conditioning unit. Attached Figure Description

[0038] The accompanying drawings, which form part of this specification, illustrate embodiments of this disclosure and, together with the specification, serve to explain the principles of this disclosure.

[0039] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein:

[0040] Figure 1 These are cross-sectional schematic diagrams of some embodiments of the unitary air conditioning unit according to this disclosure;

[0041] Figure 2 This is a schematic diagram of the frame of the housing of some embodiments of the unitary air conditioning unit according to the present disclosure;

[0042] Figure 3 This is a schematic diagram of the housing of some embodiments of the unitary air conditioning unit according to the present disclosure;

[0043] Figure 4 This is a schematic diagram illustrating the working principle of some embodiments of the unitary air conditioning unit according to this disclosure;

[0044] Figure 5 This is an exploded schematic diagram of the compressor according to some embodiments of the unitary air conditioning unit disclosed herein;

[0045] Figure 6 This is a structural schematic diagram of the explosion-proof junction box according to some embodiments of the unitary air conditioning unit disclosed herein;

[0046] Figure 7 This is a structural schematic diagram of the upper body according to some embodiments of the unitary air conditioning unit disclosed herein;

[0047] Figure 8 This is a schematic diagram of the wiring board structure in some embodiments of the unitary air conditioning unit according to this disclosure.

[0048] It should be understood that the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Furthermore, the same or similar reference numerals denote the same or similar components. Detailed Implementation

[0049] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that the present disclosure will be thorough and complete, and will fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless specifically stated otherwise, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0050] The terms "first," "second," and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0051] In this disclosure, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0052] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0053] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0054] In some related technologies, the condenser, evaporator and compressor of unit air conditioners used in underground working spaces are close together, which can lead to problems such as heat and vibration affecting each other and causing hot and cold air leakage. There is also the problem that flammable and explosive gases or dust in the environment can easily enter the compressor and cause an explosion, making it difficult to effectively meet the requirements for explosion protection and refrigeration.

[0055] In view of this, the present disclosure provides a unitary air conditioning unit that can improve explosion-proof performance and cooling performance.

[0056] In one aspect of this disclosure, a unitary air conditioning unit is provided. A unitary air conditioning unit refers to an air conditioning unit that integrates the main components of the compression refrigeration cycle (compressor, condenser, evaporator, fan, etc.) into a single independent housing, and can independently perform functions such as air cooling, heating, and dehumidification.

[0057] The unitary air conditioning unit according to the embodiments of this disclosure can be used, but is not limited to, in underground working spaces. In this disclosure, underground working space refers to an enclosed or semi-enclosed space that is artificially excavated or constructed and located below the ground surface.

[0058] Specifically, underground work spaces can include scenarios such as mines, underground quarries, highway tunnels, and railway tunnels. Among these, mines, especially coal mines, pose a risk of gas explosions. Furthermore, in other scenarios, sulfide minerals may release flammable gases during oxidation, or dust generated by machinery in poorly ventilated underground work spaces may also pose an explosion risk. In the presence of flammable and explosive gases or dust in the environment, the electrical sparks and high temperatures generated by the compressor of an air conditioning unit during operation may ignite these gases, potentially causing an internal explosion. Therefore, air conditioning units used in underground work spaces have high requirements for explosion-proof performance.

[0059] Furthermore, the ambient temperature increases with depth in the workspace, and the equipment operating in the underground workspace generates a large amount of heat, further increasing the ambient temperature. For the health of personnel, air conditioning is required to reduce the ambient temperature and humidity.

[0060] Figure 1 This is a cross-sectional schematic diagram of some embodiments of the unitary air conditioning unit according to the present disclosure. Figure 2 This is a schematic diagram of the frame of the housing 9 according to some embodiments of the unitary air conditioning unit of this disclosure. Figure 3 This is a schematic diagram of the housing 9 of some embodiments of the unitary air conditioning unit according to the present disclosure.

[0061] refer to Figure 1 According to an embodiment of the present disclosure, the unitary air conditioning unit includes a compressor 10, an evaporator 2, a condenser 3, and a housing 9. The housing 9 has an internal receiving cavity, which includes multiple cavities. The compressor 10, the condenser 3, and the evaporator 2 are located in different cavities of the multiple cavities.

[0062] In this embodiment, the compressor 10, condenser 3, and evaporator 2 are respectively disposed in different cavities within the housing 9. The forced air cooling process during the condenser 3's heat dissipation may introduce flammable and explosive gases into the air conditioning unit. Containing the compressor 10 and condenser 3 in separate cavities helps to prevent external flammable and explosive gases or dust from entering the compressor 10, thereby reducing the risk of the compressor 10 exploding and improving the explosion-proof performance of the air conditioning unit. Furthermore, in the event of an internal explosion in the compressor 10, the cavities act as barriers, reducing the risk of flame propagation to the outside of the cavity containing the compressor 10. This reduces the impact of the internal explosion on the evaporator 2 and condenser 3, and also reduces the risk of the flame igniting more external flammable and explosive gases or dust, leading to a large-scale explosion, thus improving the explosion-proof performance of the air conditioning unit.

[0063] Furthermore, the compressor 10 and the evaporator 2 and condenser 3 are located in different chambers, which reduces the mutual influence of the compressor 10 and the evaporator 2 and condenser 3 in terms of heat and vibration. This helps to reduce the possibility of accelerated aging and wear of the evaporator 2 and condenser 3 and the pipes, valves and seals in their respective chambers due to the high temperature and vibration of the compressor 10 and condenser 3, leading to hot and cold air leakage, thereby improving the lifespan and reliability of the air conditioning unit. At the same time, it also avoids the situation where the evaporator 2 is affected by the high temperature of the compressor 10 and condenser 3, resulting in low heat absorption efficiency, thereby improving the cooling performance of the unitary air conditioning unit.

[0064] refer to Figure 1 In some embodiments, a partition assembly 4 may be provided in the housing to divide the housing into multiple chambers. The multiple chambers include a compression chamber A for housing the compressor 10, an evaporation chamber B for housing the evaporator 2, and a condensation chamber C for housing the condenser 3.

[0065] refer to Figures 1-3 The partition assembly 4 can be formed by combining multiple partitions. In some embodiments, the partition assembly 4 can be formed by combining a first partition 41, a second partition 42, and a third partition 43. The first partition 41 is horizontally disposed on the side wall of the housing 9 and extends in the receiving cavity. The second partition 42 is vertically disposed on the bottom wall 96 of the housing 9 and extends in the receiving cavity. The second partition 42 and the first partition 41 are connected and together separate the compression cavity A from the inner wall of the receiving cavity. The third partition 43 is vertically disposed on the top wall 95 of the housing 9 and extends in the receiving cavity. The third partition 43 and the second partition 42 are connected and located or substantially located in the same vertical plane. The second partition 42 and the third partition 43 together separate the condensing cavity C for accommodating the condenser 3 from the inner wall of the receiving cavity. The first partition 41 and the third partition 43 together separate the evaporating cavity B for accommodating the evaporator 2 from the inner wall of the receiving cavity. In other embodiments, the partition assembly 4 can be integrally formed.

[0066] like Figures 1-3 As shown, in some embodiments, the compression chamber A and the evaporation chamber B are both located on the opposite side of the condensation chamber C along the first direction X. Figure 1 As shown, compression chamber A and evaporation chamber B are both located in front of condensation chamber C along the first direction X, while condensation chamber C is located behind compression chamber A and evaporation chamber B along the first direction X. The first direction X is perpendicular to the vertical direction Z, and compression chamber A and evaporation chamber B are arranged along the vertical direction Z. Thus, condensation chamber C occupies the space between the bottom wall 96 and the top wall 95 of the shell in the vertical direction Z, and the combined height of compression chamber A and evaporation chamber B in the vertical direction Z occupies the space between the bottom wall 96 and the top wall 95 of the shell.

[0067] Compared to arranging the compression chamber A, evaporation chamber B, and condensation chamber C sequentially along one direction, this arrangement makes better use of the space in both the first direction X and the vertical direction Z, thus reducing the excessive space occupied by the unitary air conditioning unit in either direction X or Z. Especially for underground work spaces, where there are confined environments such as mine chambers, this arrangement allows the air conditioning unit to be more easily transported to the required location, improving flexibility during transport and use.

[0068] refer to Figure 1 In some embodiments, the evaporator chamber B is located above the compression chamber A. Since the compressor 10 is the main source of noise and vibration in the air conditioning unit, this arrangement has two advantages: firstly, when the air conditioning unit is used upright on the ground, the compressor 10 is located on the lower side, that is, further away from people, so that people are less affected by noise; secondly, the vibration caused by the compressor 10 being located on the lower side is less, which helps to reduce the problem of damage to electronic components or other structures in the air conditioning unit due to vibration.

[0069] refer to Figure 1 and Figure 2 In some embodiments, a drip tray 5 is provided on the first partition 41. The drip tray 5 can collect condensate from the evaporator 2 and guide the condensate to the drain pipe 98, preventing condensate from flowing into the compressor 10 below. It can also further assist the first partition 41 in its separating function. In other embodiments, the drip tray 5 can replace the first partition 41.

[0070] At least two drain pipes 98 are installed near the four corners of the bottom wall 96. For example, a drain pipe 98 can be installed near each of the four corners of the bottom wall 96. This will allow the air conditioning unit to drain smoothly even if the ground of the underground working space is uneven.

[0071] To meet the heat dissipation requirements of condenser 3, a ventilation system can be installed in the underground working space to supply fresh air to the condensing chamber C and exhaust the hot air discharged by condenser 3.

[0072] refer to Figure 1 In some embodiments, the condenser 3 is inclinedly arranged in the condensation chamber C, and the condenser 3 can be fixedly arranged in the condensation chamber C by a bracket. Compared with a straight arrangement, the inclined arrangement of the condenser 3 can make more efficient use of the space in the condensation chamber C and achieve higher heat dissipation performance in a limited space. A part of the condenser 3 is located above the plane of the first partition 41, and another part is lower than the plane of the first partition 41, so that the condenser 3 can have a larger volume. In some embodiments, the condenser 3 can be larger than the evaporator 2. The increased volume of the condenser 3 can effectively increase the contact area between the condenser 3 and the air, making the heat dissipation performance of the condenser 3 stronger and more suitable for the high temperature and high humidity environment in underground working spaces.

[0073] refer to Figure 1 In some embodiments, the condenser 3 has an angle β with respect to the first direction X. The angle β can be between 50° and 60°, for example, 50°, 55° or 60°, to achieve comprehensive optimization of space and performance.

[0074] refer to Figure 1 In some embodiments, the evaporator 2 is arranged at an angle in the evaporation chamber B. The evaporator 2 can be fixedly mounted in the evaporation chamber B by an evaporator bracket. Compared to a straight arrangement, arranging the evaporator 2 at an angle increases the contact area with the air, thereby improving heat exchange efficiency.

[0075] refer to Figure 1 In some embodiments, the evaporator 2 has an angle α with respect to the first direction X. The angle α can be between 45° and 65°, for example, 45°, 50°, 55°, 60° or 65°, to achieve comprehensive optimization of space and performance.

[0076] Arranging the evaporator 2 and condenser 3 at an angle can improve the space utilization of the evaporation chamber B and the condensation chamber C, thereby reducing the volume of the air conditioning unit, making the air conditioning unit easier to move, and also reducing the production and transportation costs of the air conditioning unit.

[0077] refer to Figure 1 In some embodiments, the inner walls of the evaporator chamber B can be insulated, for example, by providing a layer of insulation material, to prevent the evaporator B from leaking cold and to further reduce the impact of the high temperature of the compressor 10 and the condenser 3.

[0078] refer to Figure 1 and Figure 3In embodiment (b), the unitary air conditioning unit further includes an explosion-proof electrical control box 8, which is disposed in the condensing cavity C and fixedly connected to the housing 9. This utilizes the space between the condenser 3 and the housing 9 in the condensing cavity C, further improving the space utilization rate of the condensing cavity C. The explosion-proof electrical control box 8 can be fixedly connected to the fourth side wall 94 of the housing 9. The fourth side wall 94 can have a hole to accommodate the explosion-proof electrical control box 8, so that the explosion-proof electrical control box 8 protrudes from the hole in the fourth side wall 94, allowing personnel to perform maintenance on the explosion-proof electrical control box 8 without disassembling the air conditioning unit.

[0079] In some embodiments, the explosion-proof electrical control box 8 is equipped with a heat sink. The explosion-proof electrical control box 8 exchanges heat with the condenser 3 and the air through the heat sink to cool the electronic components inside the explosion-proof electrical control box 8. The electronic components inside the explosion-proof electrical control box 8 may include a frequency converter (VFD). Since the temperature of the electronic components in the explosion-proof electrical control box 8 is usually higher than that of the refrigerant in the condenser 3, the refrigerant in the condenser 3 can be used to cool the electronic components such as the frequency converter (VFD) inside the explosion-proof electrical control box 8. This is beneficial to improving the reliability of the electronic components such as the frequency converter (VFD) and eliminates the need for additional devices such as fans to cool the electronic components inside the explosion-proof electrical control box 8, thus improving the compactness of the air conditioning unit structure.

[0080] Figure 4 This is a schematic diagram illustrating the working principle of some embodiments of the unitary air conditioning unit according to this disclosure. (See reference) Figure 1 and Figure 4 In the refrigeration cycle of some embodiments of the unitary air conditioning unit according to this disclosure, refrigerant gas is drawn into the compressor 10, compressed, and then discharged into the condenser 3, where it condenses and exchanges heat to become a high-temperature, high-pressure refrigerant liquid. The condenser 3 can be a finned tube condenser. Subsequently, the refrigerant liquid flows through the inverter VFD in the explosion-proof electrical control box 8. After absorbing heat from the inverter VFD through the heat sink on the explosion-proof electrical control box 8, it is filtered through the filter AF and enters the thermostatic expansion valve TEV. When the refrigerant liquid passes through the thermostatic expansion valve TEV, it is throttled and depressurized, becoming a low-temperature, low-pressure gas-liquid mixture. Most of this gas-liquid mixture is in the liquid phase and flows into the evaporator 2 through the main path. In the evaporator 2, it absorbs heat from the airflow, evaporates, and exchanges heat to become a gas phase, which flows out of the evaporator 2 in a gaseous state. A small portion of this gas-liquid mixture is in the gas phase and flows into the suction port of the compressor 10 through the branch bypass. The gaseous refrigerant from evaporator 2 merges with the gaseous refrigerant from the branch bypass circuit and enters the suction port of compressor 10, where it is drawn in, completing one cycle. This process repeats continuously, cooling the airflow and delivering it to the working surface, thus achieving continuous refrigeration.

[0081] refer to Figure 2 and Figure 3In some embodiments, the housing 9 may include a first sidewall 91 and a second sidewall 92 disposed opposite each other in the second direction Y, a third sidewall 93 and a fourth sidewall 94 disposed away from the compression chamber A and the evaporation chamber B in the first direction X, and a top wall 95 and a bottom wall 96.

[0082] refer to Figure 2 and Figure 3 In some embodiments, the housing 9 may be composed of a frame and multiple panels, the frame providing a mounting base, and the multiple panels being fixedly connected to the frame to form a first sidewall 91, a second sidewall 92, a third sidewall 93, a fourth sidewall 94, a top wall 95, and a bottom wall 96. To increase the stability of the housing 9, crossbeams and columns may also be provided between the panels to connect adjacent panels and support the air conditioning unit.

[0083] refer to Figure 1 , Figure 3 and Figure 4 In some embodiments, the unitary air conditioning unit further includes a first fan 7 to enhance condensation heat exchange. The first fan 7 can be as follows: Figure 1 The image shows an axial flow fan. The first fan 7 can be installed in the condensing cavity C via a first fan bracket, for example, in the space enclosed by the condenser 3, the third side wall 93, the partition assembly 4, and the top wall 95, and fixedly connected to the top wall 95, so as to make fuller use of the space in the condensing cavity C, thereby reducing the volume of the air conditioning unit.

[0084] refer to Figure 1 and Figure 3 In some embodiments, as shown in (a), the housing 9 has an air outlet 951 through which the first fan 7 exhausts heat from the condenser 3. The air outlet 951 can be located on the top wall 95 and can be fitted with a guide ring to direct airflow. The air outlet 951 can be vertically or substantially vertically positioned so that the first fan 7 exhausts air vertically or substantially upwards. Since there is usually a large amount of dust on the ground in underground work spaces, this arrangement minimizes the amount of dust stirred up by the air exhausted by the first fan 7, and also ensures that the relatively hot air exhausted by the first fan 7 does not affect personnel, thus making the working environment more comfortable.

[0085] refer to Figure 1 and Figure 3 In embodiments (a) and (b), the housing 9 has an air inlet, which may be in the form of a louver. The air inlet may be located on the first sidewall 91, the second sidewall 92, and the third sidewall 93. The air inlet includes a first air inlet 911, a second air inlet 921, and a third air inlet 931. The first air inlet 911 is located in the area between the condenser 3 and the third sidewall 93 on the first sidewall 91. The first air inlet 911 may resemble... Figure 3 The area is filled as shown. The second air inlet 921 is located in the area between the condenser 3 and the third side wall 93 on the second side wall; similarly, the second air inlet 921 can also fill this area. The third air inlet 931 is located at a position no higher than the projection of the condenser 3 onto the third side wall 93. In this way, an airflow organization pattern of three-sided air intake and one-sided air outlet can be formed in the condensing chamber C, which helps to increase the ventilation area and reduce airflow resistance.

[0086] refer to Figure 1 In some embodiments, the explosion-proof electrical control box 8 can be located in the space enclosed by the condenser 3, the third side wall 93, the partition assembly 4 and the bottom wall 96, so that the air entering through the first air inlet 911 and the second air inlet 921 can also dissipate heat from the frequency converter VFD and other electronic components in the explosion-proof electrical control box 8.

[0087] refer to Figure 1 , Figure 3 and Figure 4 In some embodiments, the unitary air conditioning unit further includes a second fan 6, which can be as follows: Figure 1 The image shows an axial flow fan. A second fan 6 can be mounted in the evaporation chamber B via a second fan bracket. The housing 9 has an air outlet 941, through which the second fan 6 supplies air to the working surface. The air outlet 941 can be horizontal or approximately horizontal to allow direct airflow to the working surface.

[0088] Participate Figure 3 In some embodiments, the housing 9 is further provided with a return air inlet 942, and both the supply air inlet 941 and the return air inlet 942 are located on the fourth side wall 94. In this way, a single-sided return air and supply air airflow organization can be formed in the evaporation chamber B, which can shorten the airflow path, reduce the loss along the path, and prevent the supply airflow from short-circuiting.

[0089] refer to Figure 3 In some embodiments, the housing 9 is provided with lifting lugs 97 to facilitate the hoisting and relocation of the air conditioning unit. Since the unitary air conditioning unit can be easily moved in underground working spaces, the lifting lugs 97 further facilitate the relocation of the unitary air conditioning unit.

[0090] In some underground workspaces, such as mines, air conditioning units need to be moved to different chambers as the mine is being excavated. Compared to split-type air conditioners in related technologies, the unit-type air conditioning unit according to this disclosure does not require the laying of new pipes during transportation and relocation, which can reduce the waste of cooling capacity and save a significant amount of costs.

[0091] In some embodiments, the unitary air conditioning unit may be, but is not limited to, an explosion-proof air conditioning unit for underground work spaces. An explosion-proof air conditioning unit refers to an air conditioning unit that can prevent and suppress explosion accidents in places with explosive hazardous gases and dust.

[0092] Figure 5 This is an exploded schematic diagram of compressor 10 according to some embodiments of the unitary air conditioning unit disclosed herein.

[0093] refer to Figure 5 In some embodiments, the compressor 10 sequentially includes an explosion-proof junction box 11, an upper body 12, and a lower body 13. A motor terminal block 15 is disposed within the explosion-proof junction box 11, and the motor terminal block 15 is sealed to the upper body 12 via a sealing gasket 16. Furthermore, the explosion-proof junction box 11 and the upper body 12 are sealed together, and the upper body 12 and the lower body 13 are sealed together, thereby isolating flammable and explosive gases and dust from the environment from the interior of the compressor 10 to reduce the risk of explosion. Even if flammable and explosive gases enter the compressor 10 and cause an internal explosion, this sealed connection can prevent the flames and high-temperature gases generated by the explosion from igniting flammable and explosive gases in the external environment.

[0094] In some embodiments, the compressor 10 may be a variable frequency compressor to meet the need for adjusting the cooling capacity.

[0095] refer to Figure 5 In some embodiments, the compressor 10 is fixedly connected to the housing 9 via a compressor mounting bracket. Metal feet may be provided below the lower body 13 to fix the compressor 10 to the bottom wall 96. The compressor 10 may include a gas-liquid separator 17, which can be fixedly connected to the lower body 13 via a clamp. This interconnects the various components of the compressor 10, which helps to reduce the impact of compressor 10 vibration on each component.

[0096] In some embodiments, the lower body 13 can be as follows: Figure 5 As shown, it can be welded together from the cover and the lower body body, or it can be integrally formed from the cover and the lower body body. The lower body body 13 can house components such as a motor, crankshaft, rotary disc, bearings, and bearing housings.

[0097] Figure 6 This is a structural schematic diagram of an explosion-proof junction box according to some embodiments of the unitary air conditioning unit disclosed herein.

[0098] refer to Figure 6 In some embodiments, the explosion-proof junction box 11 includes a cover plate 111 and an explosion-proof junction box body 112. The cover plate 111 and the explosion-proof junction box body 112 can be circular or other shapes.

[0099] The cover plate 111 covers the explosion-proof junction box body 112. To improve the reliability of the seal between the cover plate 111 and the explosion-proof junction box body 112, the explosion-proof junction box body 112 and the cover plate 111 are connected by a flange and fastened by a first fastener 141, which can be a combination of screws, spring washers, and gaskets. The contact surfaces of the cover plate 111 and the explosion-proof junction box body 112 form an explosion-proof mating surface, which is coated with sealant and designed with specific flatness and roughness to ensure explosion-proof requirements. This further improves the reliability of the seal, thereby improving the explosion-proof performance of the compressor 10.

[0100] Similarly, the explosion-proof junction box 11 and the upper body 12 are connected by a flange and fastened by a second fastener 142, which can be a combination of screws, spring washers, and gaskets. The mating surfaces of the explosion-proof junction box 11 and the upper body 12 also constitute explosion-proof mating surfaces, which are coated with sealant and have preset flatness and roughness to meet explosion-proof requirements.

[0101] refer to Figure 6 In the two sets of explosion-proof joint surfaces mentioned above, the width of the explosion-proof joint surface L ≥ 25.5 mm, and the explosion-proof distance l ≤ 14.2 mm.

[0102] In some embodiments, the upper body 12 and the lower body 13 may be connected by welding or by fasteners to improve the sealing and explosion-proof performance between the upper body 12 and the lower body 13.

[0103] refer to Figure 6 The explosion-proof junction box 11 is also equipped with an A3 pressure plate type cable entry device and an A0 cable entry device, which are respectively fastened to the first connector and the second connector by threads. The explosion-proof junction box 11 is also equipped with an internal grounding bolt and an external grounding bolt.

[0104] Figure 7 This is a schematic diagram of the upper body structure according to some embodiments of the unitary air conditioning unit disclosed herein. (See reference) Figure 7 The upper body 12 includes hooks 121 for easier hoisting of the upper body 12 and the compressor 10.

[0105] Figure 8 This is a schematic diagram of the wiring board structure according to some embodiments of the unitary air conditioning unit disclosed herein. (Reference) Figure 8In some embodiments, the motor terminal block 15 includes an upper power terminal 151 and a lower power terminal 151', as well as an upper temperature sensing terminal 152 and a lower temperature sensing terminal 152'. The upper power terminal 151 and the upper temperature sensing terminal 152 are used for external cable connections, while the lower power terminal 151' and the lower temperature sensing terminal 152' are used for internal compressor cable connections. The temperature sensing terminal 152 is used to monitor the temperature of the motor inside the compressor 10, reducing the risk of explosion or motor burnout caused by abnormally high motor temperature due to overload, poor heat dissipation, or lubrication failure.

[0106] refer to Figure 8 In some embodiments, insulating sleeves are used to isolate the terminals to achieve insulation. To achieve a seal between the terminals and the insulating sleeves, each terminal and the insulating sleeve are encapsulated on the terminal block and then screwed onto each terminal in sequence with washers, nuts, and spring washers.

[0107] refer to Figure 8 In some embodiments, the upper power terminal 151 may include an upper W terminal, an upper U terminal, and an upper V terminal, and the lower power terminal 151' may include a lower V terminal, a lower U terminal, and a lower W terminal.

[0108] refer to Figure 8 In some embodiments, the number of upper temperature sensing terminals 152 is at least two, and the number of lower temperature sensing terminals 152' is the same as the number of upper temperature sensing terminals 152. For example, if there are two temperature sensing terminals 152, the upper temperature sensing terminals 152 may include upper temperature sensing terminal B and upper temperature sensing terminal A, and the lower temperature sensing terminals 152' may include lower temperature sensing terminal B and lower temperature sensing terminal A. The two temperature sensing terminals can be used alternately or simultaneously to improve the reliability of monitoring motor temperature.

[0109] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0110] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. A packaged air conditioning unit, comprising: It includes a compressor (10), an evaporator (2), a condenser (3), and a housing (9), wherein: The housing (9) has an internal cavity, which includes multiple chambers. The compressor (10), the condenser (3), and the evaporator (2) are located in different chambers of the multiple chambers.

2. The unitary air conditioning package of claim 1, wherein, Also includes: A partition assembly (4) is disposed in the receiving cavity to divide the receiving cavity into a plurality of cavities, the plurality of cavities including a compression cavity (A) for receiving the compressor (10), an evaporation cavity (B) for receiving the evaporator (2) and a condensation cavity (C) for receiving the condenser (3); The compression chamber (A) and the evaporation chamber (B) are both located on the opposite side of the condensation chamber (C) along the first direction (X), which is perpendicular to the vertical direction (Z). The compression chamber (A) and the evaporation chamber (B) are arranged along the vertical direction (Z).

3. The unitary air conditioning unit of claim 2, wherein, The evaporation chamber (B) is located above the compression chamber (A).

4. The unitary air conditioning unit of claim 3, wherein, The partition assembly (4) includes a first partition (41) located between the evaporation chamber (B) and the compression chamber (A), and the first partition (41) is provided with a water receiving tray (5).

5. The unitary air conditioning unit of claim 3, wherein, The condenser (3) is inclinedly disposed in the condensation chamber (C), and the baffle assembly (4) includes a first baffle (41) located between the evaporation chamber (B) and the compression chamber (A), with a portion of the condenser (3) located above the plane of the first baffle (41) and another portion below the plane of the first baffle (41).

6. The unitary air conditioning unit of claim 3, wherein, The evaporator (2) is inclinedly disposed in the evaporation chamber (B).

7. The unitary air conditioning unit of claim 3, wherein, Also includes: An explosion-proof electrical control box (8) is installed in the condensation chamber (C) and is fixedly connected to the housing (9); The explosion-proof electrical control box (8) is equipped with a heat sink plate. The explosion-proof electrical control box (8) exchanges heat with the condenser (3) through the heat sink plate to cool down the electronic components inside the explosion-proof electrical control box (8).

8. The unitary air conditioning unit of claim 3, wherein, Also includes: A first fan (7) is installed in the condensing chamber (C). The housing (9) has an air outlet (951). The first fan (7) discharges the heat of the condenser (3) through the air outlet (951). The air outlet (951) is vertically arranged.

9. The unitary air conditioning unit of claim 8, wherein, The housing (9) has an air inlet, which is located on the first sidewall (91) and the second sidewall (92) in the second direction (Y), and on the third sidewall (93) in the first direction (X) away from the evaporation chamber (B). The air inlet includes: The first air inlet (911) is opened on the first side wall (91) and is located in the area between the condenser (3) and the third side wall (93); A second air inlet (921) is formed on the second sidewall (92), located in the area between the condenser (3) and the third sidewall (93); and A third air inlet (931) is provided on the third side wall (93), and the third air inlet (931) is provided at a position not higher than the projection of the condenser (3) on the third side wall (93).

10. The unitary air conditioning unit of claim 3, wherein, Also includes: A second fan (6) is installed in the evaporation chamber (B). The housing (9) has an air outlet (941). The second fan (6) delivers air to the working surface through the air outlet (941). The air outlet (941) is horizontally arranged.

11. The unitary air conditioning unit of claim 10, wherein, The housing (9) is also provided with a return air inlet (942), and the air supply inlet (941) and the return air inlet (942) are located on the fourth side wall (94) away from the condensation chamber (C) in the first direction (X).

12. The unitary air conditioning unit according to claim 1, characterized in that, The housing (9) is provided with a lifting lug (97).

13. The unitary air conditioning package of any of claims 1-12, wherein, The unit-type air conditioning unit is an explosion-proof air conditioning unit used in underground working spaces.

14. The unitary air conditioning unit of claim 13, wherein, The compressor (10) comprises, in sequence: An explosion-proof junction box (11) is provided with a motor terminal block (15); Upper body (12), wherein the explosion-proof junction box (11) is sealed to the upper body (12); and The lower carcass (13) is sealed to the upper carcass (12).

15. The unitary air conditioning unit according to claim 14, characterized in that, The explosion-proof junction box (11) includes a cover plate (111) and an explosion-proof junction box body (112). The cover plate (111) covers the explosion-proof junction box body (112). The cover plate (111) and the explosion-proof junction box body (112) are fastened together by a first fastener (141). The contact surfaces of the cover plate (111) and the explosion-proof junction box body (112) are coated with sealant. The explosion-proof junction box (11) and the upper body (12) are fastened together by a second fastener (142), and the contact surfaces of the explosion-proof junction box (11) and the upper body (12) are coated with sealant.

16. The unitary air conditioning unit of claim 14, wherein, The motor terminal block (15) includes an upper power terminal (151), a lower power terminal (151'), an upper temperature measuring terminal (152), and a lower temperature measuring terminal (152'). The upper temperature measuring terminal (152) and the lower temperature measuring terminal (152') are used to monitor the temperature inside the compressor (10).

17. The unitary air conditioning unit of claim 16, wherein, The number of the upper temperature measuring terminals (152) is at least two.

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