CN201434544Y

CN201434544Y - Vertical evaporator assembly of air-conditioning device of engineering vehicle

Info

Publication number: CN201434544Y
Application number: CN2009200465925U
Authority: CN
Inventors: 陈雪峰; 高志金; 毛蓓蓓
Original assignee: CHUANGDAO AIR-CONDITIONER Co Ltd JIANGSU
Current assignee: CHUANGDAO AIR-CONDITIONER Co Ltd JIANGSU
Priority date: 2009-06-13
Filing date: 2009-06-13
Publication date: 2010-03-31
Anticipated expiration: 2019-06-13

Abstract

The utility model discloses a vertical evaporator assembly of an air-conditioning device of an engineering vehicle, which belongs to the technical field of air conditioners of engineering vehicles andcomprises a shell 1, an evaporating core body 2 arranged in the shell 1, a blower 3, an air return inlet 4, a defrosting sensor 5, a water dripping port 6, a flat pipe 7, a heat radiating plate 8 andan air outlet 9. The evaporating core body 2 is vertically arranged and a windward face of the evaporating core body 2 corresponds to the air return inlet 4 on an evaporator assembly. Through the technical scheme, air entering the evaporator assembly from the air return inlet passes through a core in a direction vertical to the radiating plate of the evaporating core body and formed condensed water drips on the bottom surface of the shell and flows out from the water dripping port, thus the temperature sensed by the defrosting sensor is ensured to be always the temperature of the surface of the evaporating core body in normal working state, the working stability of a refrigeration working pipeline of an air-conditioning system can be improved and the problems that the surface of the evaporating core body frosts or ices, the system frequently performs interval work and the like can be avoided.

Description

The vertical type evaporator assembly of engineering truck aircondition

Technical field

The utility model belongs to the engineering truck air-conditioning technical field, specifically is the vertical type evaporator assembly of the engineering truck aircondition used of a kind of engineering machinery vehicle driver's cabin.

Background technology

At present, adopt the air conditioner for engineering vehicle of vertical type evaporator assembly, its evaporation core body all is horizontally disposed being installed in the evaporator assembly.This structure makes in the air conditioner refrigerating work, return air is through the direction of evaporation core body and the condensed water self gravitation direction of evaporation core body surface generation in the driver's cabin, be that the mobile direction of condensed water is opposite, cause the condensed water discharging not smooth, accumulate on the fin of evaporation core body.Because the evaporation core body surface temperature is low, make the condensed water that accumulates on the fin under cold service, form frost or ice, not only reduced the heat exchange area of heat exchange fuse, also increased the windage of fuse fin, make the airborne heat of return air can not be in time, on the evaporation core body fin, transmit fully, heat pump performance is affected, causes the evaporation core body surface temperature to be reduced to below the design temperature rapidly again.After this temperature is sensed by defrosting sensor, system will stop refrigeration work, the frost of core surface to be evaporated or ice dissolving, core surface temperature are increased to design temperature when above, air-conditioning system is recovered refrigeration work, but can repeat said process again soon, cause problems such as air-conditioning system frequent intermittent work, not only reduced the refrigeration of air-conditioning system, frequent discontinuous operation has also shortened the service life of core components such as compressor.

Summary of the invention

For solving the problems of the technologies described above, the utility model provides a kind of vertical type evaporator assembly of engineering truck aircondition, helps the discharging of evaporator core condensed water, and can effectively reduce evaporation core body heat-transfer surface windage, reduces the air-conditioning system discontinuous operation frequency.

The utility model is achieved through the following technical solutions: a kind of vertical type evaporator assembly of engineering truck aircondition, comprise housing, be installed in the evaporation core body in the housing, air blast, return air inlet, defrosting sensor, water dropping openings, flat tube, fin, air outlet is characterized in that evaporation core body vertically arranges installation, the return air inlet on the corresponding evaporator assembly in its windward side.During air-conditioning work, under the effect of air blast, the return air air that enters evaporator assembly vertically is blown into evaporation core body, the return air air is when abundant heat exchange is carried out on the evaporation core body surface, also under its mobilization, the condensed water that core surface is produced blows out from core surface, makes condensed water from the smooth landing in fuse edge, and the water dropping openings from evaporator assembly flows out.

Owing to adopted technique scheme, make enter the air of evaporator assembly by return air inlet can be with the direction of vertical evaporation core body fin through fuse, the condensed water that forms in the process can not be trapped on the radiating surface of warm braw fuse, but under the effect that is subjected to power that the evaporator assembly air blast forming on the condensed water and condensed water self gravitation, drop onto the bottom surface of housing, and flow out from water dropping openings, guaranteed that defrosting sensor institute sensed temperature is the temperature on evaporation core body surface under the air-conditioning system normal operating conditions all the time, improve the stability of air-conditioning system refrigeration work path and work, avoided evaporation core body surface frosting or ice, reach problems such as system's frequent intermittent work.

The utility model has the advantages that: the condensed water on evaporation core body surface is discharged under blasting action smoothly, can not produce owing to condensed water is built up the phenomenon that increases fuse heat-transfer surface windage, in addition, can not produce because the condensed water discharging does not freely cause the core surface frosting or freezes yet, the core surface temperature decrease appears, the phenomenon of air-conditioning system frequent intermittent work has improved the refrigerating efficiency of air-conditioning system, and the steady running condition of each parts when having guaranteed air-conditioning work.

Description of drawings

Fig. 1 is that structure of the present utility model is formed schematic diagram;

Fig. 2 is that the A of Fig. 1 is to view.

Among the figure: 1. housing, 2. evaporation core body, 3. air blast, 4. return air inlet, 5. defrosting sensor, 6. water dropping openings, 7. flat tube, 8. fin, 9. air outlet.Being the condensed water emission direction shown in the parabola, is air-flow direction shown in the double solid line arrow, the right → be the return air approach axis.

The specific embodiment

As shown in Figure 1 and Figure 2, housing 1, device evaporation core body 2, air blast 3, return air inlet 4, defrosting sensor 5, water dropping openings 6, flat tube 7, fin 8 and the air outlet 9 in housing 1 formed the vertical type evaporator assembly of engineering truck aircondition; Evaporation core body 2 is vertically installed, the return air inlet 4 on the corresponding evaporator assembly in its windward side.After opening air-conditioning system refrigeration work switch, air blast 3 parts such as grade are started working in the evaporator assembly, the liquid refrigerant of low-temp low-pressure enters evaporation core body 2 in the system, the cold-producing medium of low-temp low-pressure reduces fin 8 surfaces of evaporation core body 2 and flat tube 7 surface temperatures by flowing in flat tube 7.Under the blasting action of air blast 3, drive room air, according to direction as shown in Figure 2, by return air inlet 4, vertical fins 8 is blown into and through evaporation core body 2.Because it is higher to drive indoor air temperature, when flowing through evaporation core body 2, its heat carries out heat exchange at the heat-delivery surface of evaporation core body 2 and the cold-producing medium in the flat tube 7, cooled air is blown into construction-vehicle cab at the air outlet 9 from the evaporator assembly under the effect of air blast 3, thereby reaches the purpose to the driver's cabin air cooling-down.

In the process of refrigerastion, owing to contain water vapour in the driver's cabin air, produce when when the lower evaporation core body of excess temperature is surperficial, having condensed water, because warm braw fuse 2 is vertically to install near evaporator assembly return air inlet 4, the condensed water that produces at the fuse heat-delivery surface is under the blasting action of air blast 3, can not be trapped on the flat tube 7 and fin 8 of evaporation core body 2, but flow to the edge of flat tube 7, and at self gravitation, enter under the opposite dynamic action of return air inlet 4 directions with return air under the blasting action of air blast 3, drop onto according to as shown in Figure 2 parabola direction on the bottom surface of housing 1 of evaporator assembly, flow out by water dropping openings 6.Because the condensed water on evaporation core body 2 surfaces can in time flow away; so can not occur because condensed water is detained; and frosting or icing phenomenon appear in core surface; avoided because the core surface condensed water condenses and makes heat exchange fuse radiating surface reduce to increase with windage; and the problem of evaporation core body 2 surface temperature rapid drawdowns takes place; guarantee the surface temperature that 5 sensed temperature of defrosting sensor are evaporation core body 2 under system's normal operating conditions all the time simultaneously; can not occur that air conditioner refrigerating does not reach requirement and phenomenon that system works stops, reduce the problem that makes the reduction of system unit life-span owing to system's frequent intermittent work to a great extent.

Claims

1, a kind of vertical type evaporator assembly of engineering truck aircondition, comprise housing (1), be installed in the evaporation core body (2) in the housing (1), air blast (3), return air inlet (4), defrosting sensor (5), water dropping openings (6), flat tube (7), fin (8), air outlet (9) is characterized in that vertically layout installation of evaporation core body (2), the return air inlet (4) on the corresponding evaporator assembly in its windward side.