CN214469206U - High-efficiency defrosting and icing device for outdoor unit of air-cooled heat pump type air conditioning unit under cooperative control - Google Patents

Abstract

The utility model provides a high-efficient defrosting of forced air cooling heat pump type air conditioning unit off-premises station, ice device of cooperative control, it includes the off-premises station, its characterized in that: a defrosting and icing device is arranged below the coil pipe of the outdoor unit, a temperature sensor and a pressure sensor which are electrically connected with an external self-checking device are arranged in the shell of the outdoor unit, and an electric heating soft belt for assisting defrosting and icing is wound outside the shaft sleeve of the fan; the defrosting and icing device comprises a plurality of electric heating pipes arranged at the bottom of the outdoor unit, a heating component consisting of electric heating plates transversely arranged among the electric heating pipes, a screw driven by a unidirectional direct current motor and used for driving the electric heating plates to move forwards, and a guide rod sleeved with a return spring and used for driving the electric heating plates to move backwards and return.

Description

High-efficiency defrosting and icing device for outdoor unit of air-cooled heat pump type air conditioning unit under cooperative control

Technical Field

The utility model relates to a high-efficient defrosting of forced air cooling heat pump type air conditioning unit off-premises station, ice device of cooperative control.

Background

Along with the continuous and rapid development of economy in China, the living standard of people is remarkably improved, the air-conditioning refrigeration industry is rapidly developed, the requirements of people on air-conditioning are higher and higher, and the air-conditioning refrigeration industry becomes necessary living necessities gradually. In recent years, due to the emergence of energy crisis and the increasing awareness of environmental protection of people, most families can choose to use air conditioners for heating in view of low temperature and high humidity in winter, overcast and rainy days and remarkable cool feeling in non-heating areas in the south of China, and new and more serious challenges are provided for the improvement of the heating performance of the heat pump type air conditioning unit. Therefore, whether a reasonable, efficient, practical, economical and feasible air-conditioning heating system can be designed or not, whether deep research can be carried out or not and the like become the research direction of the air-conditioning industry of various countries at present. Meanwhile, in order to meet the requirement that residents feel comfortable to the indoor body and guarantee a good heating effect, the problem that the outdoor unit is subjected to real-time deicing and defrosting at low temperature is increasingly concerned. On the other hand, various conventional defrosting (ice) technologies have low efficiency and high energy consumption, or cannot synchronize the heating of an indoor unit (during a defrosting mode, the indoor unit performs a cooling process) and the defrosting (ice) operation of an outdoor unit, and thus, the air-cooled heat pump type air conditioning unit is difficult to stably and reliably operate during low-temperature heating in winter. Meanwhile, the existing various defrosting (ice) technologies and methods have the phenomena of incomplete defrosting (ice), low efficiency, high defrosting (ice) energy consumption, large indoor temperature fluctuation and the like.

Disclosure of Invention

The utility model aims at providing a high-efficient defrosting of forced air cooling heat pump type air conditioning unit off-premises station, ice device of a cooperative control just to the weak point that exists among the above-mentioned prior art and the patent.

The purpose of the utility model can be realized by the following technical measures:

the utility model discloses a high-efficient defrosting of air-cooled heat pump type air conditioning unit off-premises station of cooperative control, ice device include the off-premises station, be provided with in the below of outdoor station coil pipe except that defrosting, ice device, be equipped with temperature sensor, the pressure sensor of being connected with outside self-checking device electricity in the outdoor station casing, twine the electric heating soft area of supplementary defrosting, ice outside the fan axle sleeve; the defrosting and icing device comprises a plurality of electric heating pipes arranged at the bottom of the outdoor unit, a heating component consisting of electric heating plates transversely arranged among the electric heating pipes, a screw driven by a unidirectional direct current motor and used for driving the electric heating plates to move forwards, and a guide rod sleeved with a return spring and used for driving the electric heating plates to move backwards and return.

The utility model discloses fan air-out of forced air cooling heat pump type air conditioning unit off-premises station is intraductal sets up vortex ring disturbance generator and air distributor, and vortex ring disturbance generator and air distributor are for utilizing the spring to hang the metal ring on the wind channel, are cut apart into on the ring and run through inside and outside tangent line recess, and the wind that comes can pass the recess export that tangent line recess entry reachd the opposite side to the air supply in heat exchanger surface fin and clearance.

The utility model discloses set up vortex ring disturbance generator and cloth wind ware in the air outlet top of indoor set heat exchanger, vortex ring disturbance generator and cloth wind ware are for utilizing the spring to hang the metal ring on the wind channel, cut apart into the tangent line recess that runs through inside and outside on the ring, when hot-blast sending, because the elasticity of the spring of top can the mobility, vortex ring disturbance generator and cloth wind ware will produce the skew on the position, the incoming flow wind can pass the recess and change the wind direction, the entrainment is raised, flow from each recess export of equidirectional, send to each position, it is even to have the cloth wind, the advantage of the control amount of wind.

The utility model has the advantages as follows:

the utility model discloses can be effectively to the real-time deicing of air condensing units, defrost for the speed of defrosting (ice), improve the coefficient of heat transfer and the air conditioning unit work efficiency of its heat exchanger. Meanwhile, the problems that the exhaust temperature of a compressor of the unit is too high when the air-cooled heat pump type air conditioning system developed at present operates under the low-temperature working condition in winter, the power consumption of the air conditioning unit during heating in winter is reduced, and the surface (clearance) of fins of an outdoor unit (heat exchanger) of a heat source in the external low-temperature environment is defrosted (iced) and the like can be solved.

Drawings

Fig. 1 is a schematic view of an outdoor unit.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a front view of the outdoor unit.

Fig. 4 is a plan view of the outdoor unit.

Fig. 5 is a left side view of the outdoor unit.

Fig. 6 left side view of the indoor unit.

Fig. 7 is a front view of the indoor unit.

Fig. 8 is a schematic control diagram of the deicing device.

Fig. 9 is a circuit diagram of a deicer.

Fig. 10 is a sectional view a-a of fig. 4.

Fig. 11 is a cross-sectional view C-C of fig. 3.

Sequence number designation in the figure: in the figure: 1-a water outlet; 2-a water pan; 3-an outdoor machine motor; 4-an air duct; 5-a fin; 6-water baffle; 7-soft air pipe joint; 8-an electric heating tube; 9-evaporator heat exchange tubes; 10-guide rod (outer spring); 11-a unidirectional direct current motor; 12-a screw; 13-a direction converter; 14-an electrical heating plate; 15-a temperature sensor; 16-a pressure sensor; 17-a regulator; 18-vortex ring disturbance generator and air distributor; 19-a spraying device; 20-blower oversleeve; 21-electrically heating the soft belt; 22-a current stabilizer; 23-resistor.

Detailed Description

The invention will be further described with reference to the following examples (drawings):

as shown in fig. 1-11, the utility model discloses a high-efficient defrosting of air-cooled heat pump type air conditioning unit outdoor unit of cooperative control, ice device includes the outdoor unit, be provided with in the below of outdoor unit coil pipe and remove defrosting, ice device, be equipped with in the outdoor unit casing with outside self-checking device electricity connect temperature sensor 15, pressure sensor 16, twine the supplementary defrosting outside fan axle sleeve 20, the soft area 21 of electric heating of ice, when the numerical value that judges the result is frosting (ice) is greater than or equal to preset value, the soft area work of electric heating, defrost, deicing; the defrosting and icing device comprises a heating component consisting of a plurality of electric heating pipes 8 arranged at the bottom of the outdoor unit, an electric heating plate 14 transversely arranged among the plurality of electric heating pipes, a screw 12 driven by a unidirectional direct current motor 11 through a direction converter 13 and used for driving the electric heating plate 14 to move forwards, and a guide rod 10 sleeved with a return spring and used for driving the electric heating plate 14 to move backwards and return.

The utility model discloses fan air-out of forced air cooling heat pump type air conditioning unit off-premises station sets up vortex ring disturbance generator and air distributor 18 in managing, and vortex ring disturbance generator and air distributor 18 are for utilizing the spring to hang the metal ring on the wind channel, are cut apart into on the ring and run through inside and outside tangent line recess, and the wind that comes can pass the recess export that tangent line recess entry reachd the opposite side to in the air supply in heat exchanger surface fin and clearance.

The utility model discloses set up vortex ring disturbance generator and cloth wind ware 18 above the air outlet of indoor set heat exchanger, vortex ring disturbance generator and cloth wind ware 18 are for utilizing the spring to hang the metal ring on the wind channel, cut apart into on the ring and run through inside and outside tangent line recess, when hot-blast sending, because the elasticity of the spring of top can mobility, vortex ring disturbance generator and cloth wind ware 18 will produce the skew on the position, the incoming flow wind can pass the recess and change the wind direction, the entrainment is raised, each recess export outflow from different directions, send to each position, it is even to have the cloth wind, the advantage of the control amount of wind.

The utility model discloses a deicing method as follows:

the temperature and the pressure are detected in a frost (ice) area through the temperature sensor and the pressure sensor, the frost (ice) thickness and speed data are analyzed and judged, and when the judgment result shows that the numerical value of the frost (ice) is larger than or equal to a preset value, the direct current motor 11 is started to drive the electric heating plate 14 to move forwards (in the direction of the fins), the frost (ice) is pushed to the water receiving tray 2, and the frost (ice) is discharged from the water outlet 1 along with water. Because the spring is in a stretching state outside the guide rod, the electric heating plate is restored to the original position under the action of the stretching force; when the presence of frost (ice) is detected again, the above process is continued. In addition, an emergency measure scheme is added, if the direct current motor 11 or other components break down, the electric heating pipe 8 is started to defrost (ice), the filter screen dedusting effect is achieved by adding disturbance to the air duct 18, the spraying device 19 sprays inwards to form atomization, and then the purpose of dedusting is achieved along with heat absorption.

More specifically:

analysis of frost (ice) cause: when the temperature of the outdoor air-conditioning unit is lower than 0 ℃ in winter, water vapor in the air can be condensed out due to high humidity in the humid air, and then the water is frozen and attached to the inner wall of the air duct 4 of the outdoor air-conditioning unit. When the dryer freezes, the intake reduces, can hinder motor 3's normal operating, can make the motor burn down when serious. During defrosting and deicing, condensed water drops generally accumulate at the lower part of the air duct in the falling process due to the existence of wind speed, and because the outdoor temperature in winter is low, when the outdoor unit of the air-cooled heat pump type air conditioning unit heats in winter, because the external environment temperature is too low, the outdoor unit fins are frosted (iced), the unit is stopped easily due to the frosted (iced) of the outdoor unit fins, even the defrosting (iced) mode is too long, and the indoor heating effect is seriously influenced. On the other hand, if the condensed water drops are not discharged in time and the freezing phenomenon can occur, the accumulated ice layer can freeze the outdoor unit blade and the air duct 4 together, when the motor 3 of the outdoor unit is restarted, the motor can be blocked, and if the power is not cut off in time, the motor is burnt.

II, defrosting (ice) device works: the working process is as follows: the temperature and the pressure are detected in the frost (ice) formation area through the temperature sensor 15 and the pressure sensor 16, the frost (ice) formation thickness and the speed data are analyzed and judged, and when the judgment result shows that the value of the frost (ice) is larger than or equal to the preset value, the direct current motor 11 is started to drive the electric heating plate 14 to move forwards (in the direction of the fins), the frost (ice) is pushed to the water receiving tray 2, and the frost (ice) is discharged from the water outlet 1 along with water. Because the spring is in a stretching state outside the guide rod, the electric heating plate is restored to the original position under the action of the stretching force; when the presence of frost (ice) is detected again, the above process is continued. In addition, if the direct current motor or other parts break down, the electric heating pipe is started to defrost (ice), the vortex ring disturbance generator and the air distributor are used for increasing disturbance in the air duct, the dust removal effect of the filter screen is achieved, and the purpose of removing dust of fins and gaps on the surface of the heat exchanger is achieved through the effect of the spraying device.

Negative feedback regulation: the temperature sensor 15 and the pressure sensor 16 compare the temperature signal and the pressure signal with a system set value, the signal obtained after the comparison is transmitted to the regulator 17, and the regulator sends out a signal and transmits the signal to an actuator, namely the unidirectional direct current motor and the electric heating plate. When the existence of frost (ice) is detected, starting a switch S2, disconnecting the switch S1, and starting the unidirectional direct current motor to deice; when the unidirectional direct current motor or other parts have faults, the switch S2 is switched off, the switch S1 is switched on, and the electric heating pipe 8 is started to deice.

Iii auxiliary system defrosting (ice): under the influence of gravitational potential energy, water flow in a vertical sewer pipe and a pipeline of a building (rainwater or domestic drainage wastewater) impacts the wall surface of the pipe section in the falling process to generate water hammer to form cavitation reaction, and the generated heat energy, together with a roof solar panel, exchanges heat with a heat exchanger special for an air conditioner outdoor unit and then is used for defrosting (icing) an auxiliary system.

Claims (2)

1. The utility model provides a high-efficient defrosting of forced air cooling heat pump type air conditioning unit off-premises station, ice device of cooperative control, it includes the off-premises station, its characterized in that: a defrosting and icing device is arranged below the outdoor unit coil, a temperature sensor and a pressure sensor which are electrically connected with an external self-checking device are arranged in the outdoor unit shell, and an electric heating soft belt for assisting defrosting and icing is wound outside the fan shaft sleeve; the defrosting and icing device comprises a heating component consisting of a plurality of electric heating pipes arranged at the bottom of the outdoor unit, an electric heating plate transversely arranged among the plurality of electric heating pipes, a screw driven by a unidirectional direct current motor and used for driving the electric heating plate to move forwards, and a guide rod sleeved with a return spring and used for driving the electric heating plate to move backwards and return.

2. The outdoor unit efficient defrosting and icing device of a cooperative controlled air-cooled heat pump type air conditioning unit according to claim 1, further comprising: the air-cooled heat pump type air conditioning unit outdoor unit is characterized in that a vortex ring disturbance generator and an air distributor are arranged in a fan air outlet pipe of the air-cooled heat pump type air conditioning unit outdoor unit, the vortex ring disturbance generator and the air distributor are metal circular rings which are hung on an air channel by utilizing springs, the circular rings are divided into tangential grooves which penetrate through the inside and the outside, incoming air can penetrate through tangential groove inlets to reach groove outlets on the other side, and therefore air supply of fins on the surface of a heat exchanger and gaps is facilitated.

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