Engineering machinery air conditioning evaporator and engineering machinery

Abstract

The utility model relates to an air conditioning device, in particular to an air conditioning evaporator for engineering machinery, which comprises a box body and the like, the box body is a flat cuboid, one of two opposite side surfaces of the box body is provided with an internal circulation air inlet, and the other side surface of the box body is provided with a box body air outlet; the evaporation core body is rectangular, is arranged in the box body, is positioned between the internal circulation air inlet side surface and the air outlet side surface, and divides the space in the box body into an air inlet cavity and an air outlet cavity; the air blower is arranged in the air outlet cavity; an outer circulation air inlet side face of an outer circulation air inlet is arranged on one of the other two opposite side faces of the four side faces between the upper side face and the lower side face of the box body; the outer circulation air inlet is connected with the air inlet cavity, and an air door device used for opening and closing the outer circulation air inlet is arranged at the outer circulation air inlet. The engineering machinery air conditioning evaporator is in a regular cuboid shape, the rectangular evaporation core body is arranged in the engineering machinery air conditioning evaporator, a fresh air external circulation structure is integrated, and the engineering machinery air conditioning evaporator has the advantages of being compact in structure, efficient, convenient to install and the like.

Description

Technical Field

[0001] The utility model relates to an air-conditioning device, and more specifically, to an engineering machinery air-conditioning evaporator and the engineering machinery. Background Art

[0002] In construction machinery, the air conditioning evaporator is an important part of the cab air conditioning system. It is a device that regulates the temperature, humidity, cleanliness, flow rate, etc. of the air in the cab. The air conditioning evaporator can heat, cool, ventilate and purify the air in the cab to meet people's requirements for a comfortable operating environment.

[0003] The installation form of the evaporator of the construction machinery air conditioner is usually determined according to the layout of the cab, including installation at the front, side, rear, top and under the seat. When installed under the seat, there are strict requirements on the thickness of the evaporator. If it is too thick, the seat will be too high, thus affecting the operator's field of vision; if it is too low, the evaporator performance will not meet the design requirements. Therefore, it is necessary to develop a relatively compact evaporator to adapt to the limited space inside the construction machinery. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an engineering machinery air-conditioning evaporator, which is convenient for arrangement and installation in the engineering machinery driving room.

[0005] The utility model provides a technical solution to achieve its purpose: an engineering machinery air conditioning evaporator, which includes:

[0006] The box body is in the shape of a flat rectangular parallelepiped; one of a pair of opposite side surfaces among the four side surfaces between the upper and lower side surfaces is provided with an internal circulation air inlet, and the other side surface is provided with a box body air outlet;

[0007] The evaporation core is rectangular in shape and is disposed in the box body, located between the internal circulation air inlet and the box body air outlet and divides the space in the box body into an air inlet chamber and an air outlet chamber;

[0008] The blower is arranged in the air outlet cavity, and its air outlet is connected to the air outlet of the box body;

[0009] An external circulation air inlet communicating with the air inlet cavity is arranged on one side of another pair of opposite sides among the four sides between the upper and lower sides of the box body; a damper device for opening and closing the external circulation air inlet is arranged at the external circulation air inlet.

[0010] In the utility model of the engineering machinery air conditioning evaporator, the air conditioning evaporator also includes a warm air core arranged in the air outlet cavity, the warm air core is rectangular in shape, and is located between the evaporation core and the blower. The four sides of the evaporation core are connected to the corresponding four walls of the box body.

[0011] In the utility model of the engineering machinery air-conditioning evaporator, the warm air core is arranged vertically.

[0012] In the utility model engineering machinery air conditioner evaporator, the evaporation core is arranged in an inclined shape in the vertical direction, so that the area of ​​the evaporation core is increased within a limited box height, thereby improving its refrigeration capacity.

[0013] In the utility model of the engineering machinery air-conditioning evaporator, the top of the evaporation core is adjacent to the top of the warm air core.

[0014] In the utility model engineering machinery air conditioner evaporator, the external circulation air inlet is provided with a fresh air filter for filtering the external circulation fresh air entering the box body; the internal circulation air inlet is provided with a return air filter for filtering the internal circulation air entering the box body.

[0015] In the utility model of the engineering machinery air-conditioning evaporator, the pipeline outlet connected to the evaporation core is arranged on the side of the box body where the external circulation air inlet is located.

[0016] In the utility model of the engineering machinery air-conditioning evaporator, the damper device comprises a damper and a damper motor for driving the damper to open and close.

[0017] In the utility model of the engineering machinery air-conditioning evaporator, the blower comprises an electric motor and two groups of centrifugal fans driven by the electric motor, and the two groups of centrifugal fans are respectively arranged at two ends of the motor shaft of the electric motor.

[0018] The utility model provides a technical solution for achieving the purpose: an engineering machine, wherein the aforementioned engineering machine air-conditioning evaporator is installed in the driving room, and a driver's seat is arranged on the upper side of the box body.

[0019] Compared with the prior art, the engineering machinery air-conditioning evaporator of the utility model is in a regular rectangular parallelepiped shape, a rectangular evaporation core is arranged inside, and a fresh air external circulation structure is integrated, which has the characteristics of compact structure, high efficiency, easy installation, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an engineering machinery air-conditioning evaporator of the utility model.

[0021] Figure 2 The utility model is a schematic diagram of the arrangement and installation structure of the engineering machinery air-conditioning evaporator in the cab.

[0022] Figure 3 It is a top view of the evaporator of the engineering machinery air conditioner of the utility model.

[0023] Figure 4 It is a structural schematic diagram of the air outlet side of an evaporator of an engineering machinery air conditioner of the utility model.

[0024] Figure 5 It is a structural schematic diagram of the air inlet side of the utility model engineering machinery air conditioner evaporator.

[0025] Figure 6 It is a structural schematic diagram of the external circulation air inlet side of the utility model engineering machinery air conditioner evaporator.

[0026] Parts names and serial numbers in the figure:

[0027] Box body 1, internal circulation air inlet 11, return air filter 12, external circulation air inlet 13, fresh air filter 14, inlet air temperature sensor 15, outlet air temperature sensor 16, air inlet chamber 17, outlet air chamber 18, box body air outlet 19, blower 2, motor 20, fan 21, damper device 3, damper 31, damper motor 32, evaporator core 4, expansion valve 41, warm air core 5, heat source pipeline 51. DETAILED DESCRIPTION

[0028] The specific implementation scheme is described below with reference to the accompanying drawings.

[0029] like Figure 1 As shown, the engineering machinery air-conditioning evaporator includes a box body 1, an evaporation core 4, a blower 2, etc.

[0030] The box body 1 is in the shape of a flat rectangular parallelepiped; one of two opposite side surfaces among four side surfaces between the upper and lower side surfaces is provided with an internal circulation air inlet 11, and the other side surface is provided with a box body air outlet 19.

[0031] The evaporation core 4 is rectangular in shape and is disposed in the housing 1 , between the internal circulation air inlet 11 and the housing air outlet 19 , and divides the space in the housing 1 into an air inlet chamber 17 and an air outlet chamber 18 .

[0032] The blower 2 is disposed in the air outlet cavity 18 , and its air outlet is connected to the air outlet 19 of the box body.

[0033] An external circulation air inlet 13 is provided on one of the other two opposite sides of the four sides between the upper and lower sides of the box body 1; the external circulation air inlet 13 is communicated with the air inlet cavity 17, and a damper device 3 for opening and closing the external circulation air inlet is provided at the external circulation air inlet 13.

[0034] Specifically, the six surfaces of the box body 1 are the top surface, the bottom surface, the front side surface between the top surface and the bottom surface, the rear side surface, the left side surface and the right side surface, wherein the front and rear side surfaces are one pair of opposite side surfaces, and the left and right side surfaces are another pair of opposite side surfaces. The external circulation air inlet 13 is arranged on the right side surface of the box body 1. In some embodiments, the external circulation air inlet 13 can also be arranged on the left side surface of the box body.

[0035] The external circulation air inlet 13 is provided with a fresh air filter 14 for filtering the external circulation fresh air entering the box body 1; the internal circulation air inlet 11 is provided with a return air filter 12 for filtering the internal circulation air entering the box body 1. The external circulation fresh air refers to the air entering from outside the cab, and the internal circulation air refers to the air in the cab.

[0036] An inlet temperature sensor 15 is provided on the outside of the internal circulation air inlet 11, and an outlet temperature sensor 16 is provided in the box air outlet 19. The inlet temperature sensor 15 is used to detect the temperature of the return air entering the box 1, that is, the temperature of the air in the cab. The outlet temperature sensor 16 is used to detect the temperature of the air coming out of the box 1. The inlet temperature sensor 15 and the outlet temperature sensor 16 detect the temperature parameters of the air entering and leaving the box 1 for controlling the evaporation core 4, the blower 2 and other devices.

[0037] The evaporation core 4 is rectangular. Figure 1 Figure 3 As shown, the space inside the box 1 is divided into two chambers, namely, an air inlet chamber 17 at the rear side and an air outlet chamber 18 at the front side. The internal circulation air inlet 11 is arranged on the rear side of the box, and the box air outlet 19 is arranged on the front side of the box 1.

[0038] The upper and lower sides and the left and right sides of the evaporation core 4 correspond to the top, bottom, left and right sides of the housing 1, and separate the inner space of the housing 1 into an air inlet chamber 17 and an air outlet chamber 18. The evaporation core 4 is arranged in an inclined shape, and its top is inclined toward the front side, so that within a limited height, the length of the left and right sides of the evaporation core 4 is increased, and the windward surface area of ​​the evaporation core 4 is increased, thereby improving its heat dissipation effect.

[0039] The blower 2 comprises a motor 20 and two groups of centrifugal fans 21 driven by the motor 20. The two groups of centrifugal fans 21 are respectively arranged at two axial ends of the motor 20. The blower air outlet, i.e., the fan air outlet, is communicated with the box air outlet 19.

[0040] The external circulation air inlet 13 is connected to the outside of the cab through a pipeline. The damper device 3 includes a damper 31 and a damper motor 32 for driving the damper 31 to rotate. The external circulation air inlet 13 is connected to the air inlet chamber 17. In the fresh air mode, the damper motor 32 drives the damper 31 to rotate and open, and the external air enters the box body 1.

[0041] Optionally, the engineering machinery air conditioning evaporator further includes a heater core 5, which is used for heating, and uses a heat source such as engine or motor coolant to exchange heat with the air flowing through the box 1 to provide warm air for the cab. The heater core 5 can also be an electric heating core that uses electrical energy to generate heat.

[0042] The warm air core 5 is rectangular and arranged in the air outlet cavity 18, between the evaporation core 4 and the blower 3, and its upper, lower, left, and right sides are connected to the corresponding four walls of the box body 1. Optionally, the warm air core 5 is arranged vertically, and the top of the evaporation core 4 is adjacent to the top of the warm air core 5.

[0043] The outlet of the pipeline connected to the evaporation core 4 is arranged on the side of the external circulation air inlet. The connecting pipeline of the evaporation core 4 includes an expansion valve 41. The outlet of the pipeline of the heat source pipeline 51 connected to the warm air core 5 is arranged on the side of the external circulation air inlet.

[0044] This embodiment also provides a construction machine, in which the aforementioned construction machine air conditioning evaporator 100 is installed in the driving room, and a driver's seat 200 is installed on the upper side of the box body 1. Figure 2 As shown, the box 1 is fixed to the cab floor 300 by bolts, and the driver's seat 200 is fixed to the top of the box 1. The outer circulation air inlet side of the box 1 faces the rear of the cab, and the outer circulation air inlet 13 is connected to the outside of the cab through a pipeline. The inner circulation air inlet side of the box 1 faces the left side of the cab, and the box air outlet faces the right side of the cab.

[0045] In some embodiments, the installation arrangement of the engineering machinery air conditioning evaporator 100 is as follows: Figure 3 As shown, the inner circulation air inlet side faces the rear of the cab, the air (return air) in the cab enters the box through the inner circulation air inlet 11, the box air outlet faces the front of the cab, and the outer circulation air inlet side faces the left side of the cab. In some other embodiments, the outer circulation air inlet side can also face the right side of the cab.

[0046] In this embodiment, the engineering machinery air-conditioning evaporator is in the shape of a regular rectangular parallelepiped, in which a rectangular evaporation core is arranged, and an integrated fresh air external circulation structure has the characteristics of compact structure, high efficiency, and easy installation.

Claims

1. An evaporator for an engineering machinery air conditioner, characterized in that: include, The box body is in the shape of a flat rectangular parallelepiped; one of a pair of opposite side surfaces among the four side surfaces between the upper and lower side surfaces is provided with an internal circulation air inlet, and the other side surface is provided with a box body air outlet; The evaporation core is rectangular in shape and is disposed in the box body, located between the internal circulation air inlet and the box body air outlet and divides the space in the box body into an air inlet chamber and an air outlet chamber; The blower is arranged in the air outlet cavity, and its air outlet is connected to the air outlet of the box body; An external circulation air inlet communicating with the air inlet cavity is arranged on one side of another pair of opposite sides among the four sides between the upper and lower sides of the box body; a damper device for opening and closing the external circulation air inlet is arranged at the external circulation air inlet.

2. The engineering machinery air conditioning evaporator according to claim 1, characterized in that: The air conditioner evaporator also includes a warm air core arranged in the air outlet cavity. The warm air core is rectangular in shape and is located between the evaporation core and the blower. The four sides of the evaporation core are connected to the corresponding four walls of the box body.

3. The engineering machinery air conditioning evaporator according to claim 2, characterized in that: The warm air core is arranged vertically.

4. The engineering machinery air conditioning evaporator according to claim 2 or 3, characterized in that: The evaporation core is arranged in an inclined shape in the up-down direction.

5. The engineering machinery air conditioning evaporator according to claim 4, characterized in that: The top of the evaporation core is adjacent to the top of the warm air core.

6. The engineering machinery air conditioning evaporator according to claim 1, characterized in that: The external circulation air inlet is provided with a fresh air filter for filtering the external circulation fresh air entering the box body; the internal circulation air inlet is provided with a return air filter for filtering the internal circulation air entering the box body.

7. The engineering machinery air conditioning evaporator according to claim 1, characterized in that: The outlet of the pipeline connected to the evaporation core is arranged on the side of the box body where the external circulation air inlet is located.

8. The engineering machinery air conditioning evaporator according to claim 1, characterized in that: The damper device comprises a damper and a damper motor for driving the damper to rotate and open and close.

9. The engineering machinery air conditioning evaporator according to claim 1, characterized in that: The blower comprises an electric motor and two centrifugal fans driven by the electric motor. The two centrifugal fans are respectively arranged at two ends of a motor shaft of the electric motor.

10. An engineering machine, characterized in that: The invention provides an engineering machinery air-conditioning evaporator according to any one of claims 1 to 9, wherein the engineering machinery air-conditioning evaporator is arranged in a cab, and a driver's seat is arranged on the upper side of the box.

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