Air conditioning assemblies and operating machinery

Abstract

This utility model relates to the field of work machinery technology, and discloses an air conditioning assembly and work machinery. The air conditioning assembly includes: an evaporator having an air inlet and a first air outlet; and a first duct assembly including a face-blowing duct, a defrosting duct, and a first common duct. One end of the first common duct is connected to the first air outlet, and the other end is connected to the face-blowing duct and the defrosting duct, respectively. In this utility model, the face-blowing duct and the defrosting duct are connected to the first air outlet of the evaporator through the first common duct. Compared with the original independent duct, the first common duct has a larger flow cross-sectional area. Under the same air volume at the first air outlet, the air velocity in the first common duct is lower, thus effectively reducing the eddy current intensity in the first common duct, thereby reducing the air pressure loss during the air guiding process of the first duct assembly, increasing the air velocity at the air outlets of the face-blowing duct and the defrosting duct, so that the air conditioning assembly has a better air outlet effect under the same working power.

Description

Technical Field

[0001] This utility model relates to the field of work machinery technology, specifically to air conditioning assemblies and work machinery. Background Technology

[0002] A wheeled crane is a mobile crane mounted on a wheeled chassis. Because the operator's cab of a wheeled crane requires a high degree of visibility, there are few obstructions around the cab. Operators are usually directly exposed to the sun when working. In order to ensure the comfort of the operators, the air conditioning in the cab needs to have good performance. The arrangement of the air conditioning ducts usually directly affects the comfort of the operators.

[0003] Currently, the air conditioning assemblies in existing control rooms typically include an evaporator and multiple independent air ducts. These ducts are independently connected to the evaporator to guide airflow to the corresponding locations. Due to space limitations within the control room, the air ducts are often irregularly shaped. Because of the high complexity of the independent air ducts, there is a significant pressure loss during air delivery, which will affect the air volume of each duct and consequently lead to poor user comfort of the air conditioning assembly. Utility Model Content

[0004] In view of this, the present invention provides an air conditioning assembly and operating machinery to solve the problem of poor user comfort in existing air conditioning assemblies.

[0005] In a first aspect, the present invention provides an air conditioning assembly, comprising: an evaporator having an air inlet and a first air outlet; and a first duct assembly including a face-blowing duct, a defrosting duct, and a first common duct, one end of the first common duct being connected to the first air outlet, and the other end being connected to the face-blowing duct and the defrosting duct respectively, wherein the flow cross-sectional area of ​​the first common duct is greater than the sum of the flow cross-sectional areas of the face-blowing duct and the defrosting duct.

[0006] Beneficial effects: In the first duct assembly, the face blowing duct and the defrosting duct are connected to the first air outlet of the evaporator through the first common duct. Compared with the original independent duct, the first common duct has a larger flow cross-sectional area. Under the same air volume at the first air outlet, the air velocity in the first common duct is lower. Therefore, it can effectively reduce the eddy current intensity in the first common duct, thereby reducing the air pressure loss during the air guiding process of the first duct assembly. It also increases the air velocity at the air outlet of the face blowing duct and the defrosting duct, so that the air conditioning assembly has a better air outlet effect under the same operating power, effectively solving the problem of poor user comfort of the existing air conditioning assembly.

[0007] In one optional embodiment, the first common air duct includes a first connecting section, a second connecting section, and a third connecting section. The first connecting section is connected to the third connecting section via the second connecting section. The first connecting section is connected to both the face blowing duct and the defrosting duct. The third connecting section is connected to the first air outlet. The flow cross-sectional area of ​​the third connecting section is larger than that of the first connecting section. The flow cross-sectional area of ​​the second connecting section gradually decreases along the direction of opening into the first connecting section.

[0008] Beneficial effects: Due to the limited space in the control room, this type of first shared air duct can not only effectively reduce the space it occupies and flexibly avoid the need for seats and other components, but also smoothly guide the airflow and avoid the shape of its inner wall from causing significant obstruction to the airflow.

[0009] In one alternative implementation, the first connecting segment and the second connecting segment are integral components.

[0010] Beneficial effects: The integrated component can not only reduce the number of seams between the first and second connecting sections, but also effectively reduce the number of parts, making it easier to assemble the first common air duct.

[0011] In one alternative embodiment, the second connecting segment and the third connecting segment are detachably connected, and the second connecting segment is sealed to the third connecting segment by a seal.

[0012] Beneficial effects: Due to the limited assembly space in the control room, the segmented first common air duct is easier to install. In addition, the installation of seals can effectively reduce the risk of air leakage at the splicing points of the second and third connecting sections.

[0013] In one alternative implementation, the evaporator has a second air outlet;

[0014] The air conditioning assembly also includes a second duct assembly, which includes a bottom duct and a rear duct connected to a second air outlet.

[0015] Beneficial effects: It enables the air conditioning unit to also deliver air to the operator's legs and back, improving the comfort of using the air conditioning unit.

[0016] In one optional embodiment, the second duct assembly further includes a second common duct, one end of which is connected to the second air outlet, and the other end is connected to the bottom duct and the rear duct, respectively.

[0017] Beneficial effects: Compared with existing independent air ducts, this type of second air duct assembly can reduce the air pressure loss during the air guiding process of the second air duct assembly, thereby increasing the air velocity at the air outlet of the bottom air duct and the rear air duct.

[0018] In one alternative embodiment, the evaporator, the first duct assembly, and the second duct assembly are all provided with an insulation layer on their exteriors.

[0019] Beneficial effects: It can effectively reduce the heat exchange between the internal airflow and the external environment, ensuring the comfort of the blown air.

[0020] In one alternative implementation, the bends in both the first and second duct assemblies are rounded.

[0021] Beneficial effects: It can improve the smoothness of internal airflow, reduce eddies, and reduce the obstruction of internal airflow by the inner wall of the passage.

[0022] In one optional embodiment, a support structure is provided in the first air outlet, and the two ends of the support structure are fixedly connected to two opposite walls in the first air outlet; and / or, a support structure is provided in the second air outlet, and the two ends of the support structure are fixedly connected to two opposite walls in the second air outlet.

[0023] Beneficial effects: The supporting structure can effectively support the first air outlet, improve the structural strength of the first air outlet, and effectively prevent gaps from forming due to deformation after assembly, thus reducing the risk of air leakage.

[0024] Secondly, this utility model also provides a working machine, which includes: a machine body having an operator's cab; the aforementioned air conditioning assembly being disposed on the machine body, with the air blowing duct and defrosting duct of the air conditioning assembly located in the operator's cab. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a three-dimensional schematic diagram of an air conditioning assembly according to an embodiment of the present utility model;

[0027] Figure 2 for Figure 1 A three-dimensional schematic diagram of the evaporator of the air conditioning assembly shown.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Evaporator; 101. Air inlet; 102. First air outlet; 103. Second air outlet;

[0030] 2. First duct assembly; 201. Facial air blowing duct; 202. Defrosting duct; 203. First common duct;

[0031] 2031, First connecting segment; 2032, Second connecting segment; 2033, Third connecting segment;

[0032] 3. Second duct assembly; 301. Bottom duct; 302. Rear duct; 303. Second common duct;

[0033] 4. Supporting structure. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] In related technologies, the existing air conditioning assemblies in the control room typically include an evaporator and multiple independent air ducts, which are independently connected to the evaporator through different air ducts to guide the airflow to the corresponding positions. This type of air conditioning assembly has a number of disadvantages.

[0036] Firstly, due to the limited space in the control room, the air ducts are mostly irregularly shaped. Because the independent air ducts are complex and have a small diameter, the vortex intensity in the air ducts is high during the air supply process, which will generate greater resistance during the air supply process, resulting in a lower air velocity at the air duct outlet. To compensate for this problem, it is necessary to increase the speed of the blower in the evaporator. As the working intensity of the evaporator increases, its working noise will also increase.

[0037] Secondly, since the air ducts are all independently installed and connected to the evaporator separately, there are a large number of air ducts and many splicing points between different sections of the air ducts. In addition, the evaporator also needs to be equipped with an air outlet for each air duct. This type of assembly has many splicing points. During long-term use, the splicing points are prone to air leakage, which will lead to air volume loss in the air ducts. To compensate for this problem, the speed of the blower in the evaporator needs to be increased. As the workload of the evaporator increases, its operating noise will also increase.

[0038] Thirdly, since the air ducts are all independently installed and connected to the evaporator separately, there are a large number of air ducts, which makes the assembly time-consuming and labor-intensive, and also presents a cumbersome assembly problem.

[0039] The following is combined with Figure 1 and Figure 2 The following describes embodiments of the present invention.

[0040] According to an embodiment of the present invention, an air conditioning assembly is provided, comprising: an evaporator 1 and a first duct assembly 2.

[0041] The evaporator 1 has an air inlet 101 and a first air outlet 102; the first duct assembly 2 includes a face blowing duct 201, a defrost duct 202 and a first common duct 203, one end of the first common duct 203 is connected to the first air outlet 102, and the other end is connected to the face blowing duct 201 and the defrost duct 202 respectively, and the flow cross-sectional area of ​​the first common duct 203 is greater than the sum of the flow cross-sectional areas of the face blowing duct 201 and the defrost duct 202.

[0042] In the air conditioning assembly of this embodiment, in the first duct assembly 2, the face blowing duct 201 and the defrost duct 202 are connected to the first air outlet 102 of the evaporator 1 through the first common duct 203. Compared with the original independent duct, the first common duct 203 has a larger flow cross-sectional area. Under the same air volume at the first air outlet 102, the air velocity in the first common duct 203 is lower. Therefore, it can effectively reduce the eddy current intensity in the first common duct 203, thereby reducing the air pressure loss in the air guiding process of the first duct assembly 2, increasing the air velocity at the air outlets of the face blowing duct 201 and the defrost duct 202, so that the air conditioning assembly has a better air outlet effect under the same operating power, effectively solving the problem of poor user comfort of the existing air conditioning assembly.

[0043] Specifically, since the air conditioning assembly of this embodiment reduces the vortex intensity in the first common air duct 203 and reduces the air pressure loss in the air guiding process of the first air duct assembly 2, compared with the existing air conditioning assembly with independent air ducts, the blower structure in the evaporator 1 of this embodiment only needs a smaller rotation speed to meet the air outlet speed requirement, thus effectively reducing the noise during the operation of the air conditioning assembly.

[0044] Furthermore, since the blowing air duct 201 and the defrosting air duct 202 in this embodiment are connected to the first air outlet 102 of the evaporator 1 through the first common air duct 203, it can not only effectively reduce the number of defrosting air duct 202 sections and reduce the number of splice positions, but also reduce the number of air outlets on the evaporator 1. Therefore, the air conditioning assembly in this embodiment also has the advantages of simpler assembly and reduced risk of air leakage.

[0045] It should be noted that there are no restrictions on the specific extension method and length of the face blowing duct 201 and the defrosting duct 202, which can be selected according to the actual situation of the control room.

[0046] In one possible implementation, such as Figure 1As shown, the first common air duct 203 includes a first connecting section 2031, a second connecting section 2032, and a third connecting section 2033. The first connecting section 2031 is connected to the third connecting section 2033 through the second connecting section 2032. The first connecting section 2031 is connected to the face blowing duct 201 and the defrosting duct 202 respectively. The third connecting section 2033 is connected to the first air outlet 102. The flow cross-sectional area of ​​the third connecting section 2033 is larger than that of the first connecting section 2031. The flow cross-sectional area of ​​the second connecting section 2032 gradually decreases along the direction of opening into the first connecting section 2031. Due to the limited space in the control room, this type of first common air duct 203 can not only effectively reduce the space it occupies and flexibly avoid parts such as seats, but also smoothly guide the airflow and avoid its inner wall shape from causing significant obstruction to the airflow.

[0047] It is understood that, as an alternative implementation, the flow cross-sectional area of ​​the first connecting section 2031 or the third connecting section 2033 can gradually decrease along the airflow direction. The first connecting section 2031, the second connecting section 2032, and the third connecting section 2033 can also have the same flow cross-sectional area, which can be selected according to actual layout requirements.

[0048] In one possible implementation, such as Figure 1 As shown, the first connecting section 2031 and the second connecting section 2032 are integral components. The integral components can not only reduce the number of seams between the first connecting section 2031 and the second connecting section 2032, but also effectively reduce the number of parts, making it easier to assemble the first common air duct 203.

[0049] It is understood that, as an alternative implementation, the second connecting segment 2032 and the third connecting segment 2033 may be an integral component, or the first connecting segment 2031, the second connecting segment 2032 and the third connecting segment 2033 may be an integral component.

[0050] In one possible implementation, such as Figure 1 As shown, the second connecting section 2032 and the third connecting section 2033 are detachably connected. The second connecting section 2032 is sealed to the third connecting section 2033 through a sealing element. Due to the limited assembly space in the control room, the segmented first common air duct 203 is easier to install. In addition, the sealing element can effectively reduce the risk of air leakage at the splicing position of the second connecting section 2032 and the third connecting section 2033.

[0051] Specifically, it can be understood that, as an alternative implementation, the first connecting segment 2031 and the second connecting segment 2032 can also be detachably connected, and both are sealed together by a seal.

[0052] Furthermore, such as Figure 1 As shown, a connecting ring is provided at the connection position of the second connecting section 2032 and the third connecting section 2033. The second connecting section 2032 and the third connecting section 2033 are connected by the connecting ring. The connecting ring is provided with a connecting structure. The connecting ring can be connected to the wall of the control room or a fixed component through its own connecting ring, thereby fixing the position of the first common air duct 203 in the control room.

[0053] The connecting structure on the connecting ring can be a connecting plate, a connecting hole, or anything else that can connect to external components.

[0054] In one possible implementation, such as Figure 1 and Figure 2 As shown, the evaporator 1 has a second air outlet 103;

[0055] The air conditioning assembly also includes a second duct assembly 3, which includes a bottom duct 301 and a back duct 302 connected to the second air outlet 103, enabling the air conditioning assembly to also deliver air to the operator's legs and back, thereby improving the comfort of using the air conditioning assembly.

[0056] Specifically, the air ducts of the air conditioning assembly are not limited to the first air duct assembly 2 and the second air duct assembly 3. The number of air ducts can be increased as needed to supply air to the operator above, to the side and other positions, thereby further improving the comfort of using the air conditioning assembly.

[0057] In one possible implementation, such as Figure 1 As shown, the second duct assembly 3 also includes a second common duct 303. One end of the second common duct 303 is connected to the second air outlet 103, and the other end is connected to the bottom duct 301 and the back duct 302 respectively. Compared with the existing independent duct, this type of second duct assembly 3 can reduce the air pressure loss during the air guiding process of the second duct assembly 3, thereby increasing the air velocity at the air outlets of the bottom duct 301 and the back duct 302.

[0058] It should be noted that there are no restrictions on the specific extension method and length of the bottom air duct 301 and the rear air duct 302, which can be selected according to the actual situation of the control room.

[0059] Furthermore, there is no limit to the number of air outlets in each of the face blowing duct 201, defrosting duct 202, bottom duct 301, and rear duct 302, such as... Figure 1 As shown in the figure, this embodiment demonstrates a configuration where each duct has two air outlets, but the specific number can also be set to one or more.

[0060] Specifically, there are no restrictions on the materials of the face blowing duct 201, defrosting duct 202, bottom duct 301 and back duct 302, which can be plastic, metal or other materials.

[0061] Preferably, the face blowing duct 201, the defrosting duct 202, the bottom duct 301, and the back duct 302 are all PE ducts.

[0062] In one possible implementation, such as Figure 1 As shown, the evaporator 1, the first duct assembly 2, and the second duct assembly 3 are all equipped with heat insulation layers on their exteriors, which can effectively reduce the heat exchange between the internal airflow and the external environment, ensuring the comfort of the blown airflow.

[0063] The insulation layer can be made of rubber and plastic insulation materials, polyurethane foam, or polyethylene foam, as long as it can achieve the insulation effect.

[0064] In one possible implementation, such as Figure 1 As shown, the bends in the first duct assembly 2 and the second duct assembly 3 are all rounded, which can improve the smoothness of internal airflow, reduce eddies, and reduce the obstruction of the passage wall to the internal airflow.

[0065] In one possible implementation, such as Figure 2 As shown, a support structure 4 is provided in the first air outlet 102, and the two ends of the support structure 4 are fixedly connected to two opposite walls in the first air outlet 102 respectively; a support structure 4 is provided in the second air outlet 103, and the two ends of the support structure 4 are fixedly connected to two opposite walls in the second air outlet 103 respectively. The support structure 4 can effectively support the first air outlet 102, improve the structural strength of the first air outlet 102, and effectively prevent the first air outlet 102 from having gaps due to deformation after assembly, thereby reducing the risk of air leakage.

[0066] According to an embodiment of the present invention, in another aspect, a working machine is provided, comprising: a body and the aforementioned air conditioning assembly, the body having an operator's cab; the air conditioning assembly is disposed on the body, and the air blowing duct 201 and defrosting duct 202 of the air conditioning assembly are located in the operator's cab.

[0067] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An air conditioning assembly, characterized in that, include: Evaporator (1) has an air inlet (101) and a first air outlet (102); The first duct assembly (2) includes a face blowing duct (201), a defrosting duct (202) and a first common duct (203). One end of the first common duct (203) is connected to the first air outlet (102), and the other end is connected to the face blowing duct (201) and the defrosting duct (202) respectively. The flow cross-sectional area of ​​the first common duct (203) is greater than the sum of the flow cross-sectional areas of the face blowing duct (201) and the defrosting duct (202).

2. The air conditioning assembly according to claim 1, characterized in that, The first shared air duct (203) includes a first connecting section (2031), a second connecting section (2032), and a third connecting section (2033). The first connecting section (2031) is connected to the third connecting section (2033) through the second connecting section (2032). The first connecting section (2031) is connected to the face blowing duct (201) and the defrosting duct (202) respectively. The third connecting section (2033) is connected to the first air outlet (102). The flow cross-sectional area of ​​the third connecting section (2033) is larger than that of the first connecting section (2031). The flow cross-sectional area of ​​the second connecting section (2032) gradually decreases along the direction of opening into the first connecting section (2031).

3. The air conditioning assembly according to claim 2, characterized in that, The first connecting segment (2031) and the second connecting segment (2032) are integral components.

4. The air conditioning assembly according to claim 2, characterized in that, The second connecting segment (2032) is detachably connected to the third connecting segment (2033), and the second connecting segment (2032) is sealed to the third connecting segment (2033) through a sealing element.

5. The air conditioning assembly according to any one of claims 1 to 4, characterized in that, The evaporator (1) has a second air outlet (103); The air conditioning assembly also includes a second duct assembly (3), which includes a bottom duct (301) and a rear duct (302) connected to the second air outlet (103).

6. The air conditioning assembly according to claim 5, characterized in that, The second duct assembly (3) also includes a second common duct (303), one end of which is connected to the second air outlet (103), and the other end is connected to the bottom duct (301) and the back duct (302) respectively.

7. The air conditioning assembly according to claim 5, characterized in that, The evaporator (1), the first duct assembly (2), and the second duct assembly (3) are all provided with heat insulation layers on their exteriors.

8. The air conditioning assembly according to claim 5, characterized in that, The bends in the first duct assembly (2) and the second duct assembly (3) are all rounded.

9. The air conditioning assembly according to claim 5, characterized in that, A support structure (4) is provided in the first air outlet (102), and the two ends of the support structure (4) are fixedly connected to two opposite walls in the first air outlet (102); And / or, a support structure (4) is provided in the second air outlet (103), and the two ends of the support structure (4) are fixedly connected to two opposite walls in the second air outlet (103).

10. A type of operating machinery, characterized in that, include: The fuselage includes a control room; The air conditioning assembly according to any one of claims 1 to 9 is disposed in the body, and the air blowing duct (201) and defrosting duct (202) of the air conditioning assembly are located in the control room.

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