CN215983494U - Refrigerator car capable of defrosting by using waste heat of automobile exhaust - Google Patents

Abstract

The utility model discloses a refrigerator car for defrosting by using waste heat of automobile exhaust. Comprises a shell-and-tube type flue gas heat exchanger and a refrigerating box. The refrigerating box is internally provided with an equipment room and a refrigerating room, and the equipment room is internally provided with a fin evaporator and a fan; the shell-and-tube type flue gas heat exchanger is arranged outside the refrigerating box and is connected with the equipment room through a heat insulation pipeline with a heat insulation check valve. During refrigeration, the heat-preservation check valve is closed, the fan in the heat-preservation pipeline stops working, and low-temperature gas enters the refrigerating chamber through the electric swing blade; during defrosting, the electric swing blade of the refrigerating chamber is closed, the fan and the refrigerating system in the equipment room stop working, the fan in the heat-insulating pipeline is started, the heat-insulating check valve is opened, gas in the equipment room is blown into the shell and tube type smoke heat exchanger by the fan in the heat-insulating pipeline, and the gas is changed into high-temperature gas after absorbing waste heat of automobile tail gas and blown to the fin evaporator through the heat-insulating pipeline, so that defrosting is realized. The utility model reduces the cold chain transportation cost, reduces the emission of carbon dioxide, and promotes China to realize 'carbon peak reaching and carbon neutralization' early.

Description

Refrigerator car capable of defrosting by using waste heat of automobile exhaust

The technical field is as follows: the utility model relates to the field of automobile exhaust waste heat utilization refrigerator cars, in particular to the field of defrosting by utilizing automobile exhaust waste heat.

Background art: the refrigerator car is used as an important link of cold chain logistics and relates to the safety problem of food and vaccines. In recent years, a series of policies and regulations for supporting cold-chain logistics transportation are provided from the state to local governments, and cold-chain logistics development action plans are provided from the governments of all parts, such as Chongqing city, Zhejiang province and the like, which clearly provide future development scale requirements for the refrigerated transport vehicle and become important supports for promoting the rapid development of the refrigerated transport vehicle. As the humidity in the refrigerator car is high, the fin evaporator is easy to frost, the heat transfer resistance is increased along with the thickening of the frost layer on the surface of the fin evaporator, and the heat exchange efficiency of the fin evaporator is reduced. Therefore, the realization of the frostless environment of the fin evaporator or the efficient defrosting of the heat exchanger has important significance for improving the refrigeration efficiency and reducing the energy consumption of the system. At present, the refrigeration vehicle mainly carries out electric heating defrosting, and the traditional defrosting method needs to consume a large amount of energy, and does not meet the requirements of energy conservation and system energy consumption reduction advocated by the current society. Other defrosting modes such as manual defrosting, natural defrosting and the like cannot defrost in time, a large amount of cold energy is wasted, manpower and material resources are wasted, and the defrosting mode is not an ideal defrosting mode.

This patent is through the utilization to the automobile exhaust waste heat, uses shell and tube formula gas heat exchanger to carry the tail gas waste heat for the fin evaporator, has not only realized defrosting for the fin evaporator, has still realized the reutilization to the energy. The refrigeration efficiency is improved, the cold chain transportation cost is reduced, the economic benefit of a transport company is improved, the refrigeration efficiency of the refrigerated truck is also improved, the emission of carbon dioxide is reduced, and the effects of energy conservation and emission reduction are achieved.

The utility model has the following contents: the utility model aims to more efficiently utilize the waste heat of the automobile exhaust and reduce the energy consumption of the refrigerator car, and provides the refrigerator car for defrosting by utilizing the waste heat of the automobile exhaust.

The technical scheme adopted for realizing the purpose of the utility model is as follows:

a refrigerator car for defrosting by using waste heat of automobile exhaust comprises a shell-and-tube type smoke heat exchanger and a refrigerator, wherein the shell-and-tube type smoke heat exchanger is arranged outside the refrigerator and is connected with a refrigeration equipment room through a heat insulation pipeline with a heat insulation check valve; when refrigerating, the fan in the heat-insulating pipeline stops working, the heat-insulating check valve is closed, and low-temperature gas generated in the fin evaporator is blown to the tail part of the equipment room through the fan in the equipment room and enters the refrigerating room through the electric swing blade at the top part; when defrosting is carried out, the swing blade at the top of the refrigerating chamber is closed, the fan in the equipment room stops rotating, the refrigerating system stops refrigerating, the fan in the pipeline starts to operate, the heat-preservation check valve is opened, cold air in the equipment room is blown into the shell-and-tube type flue gas heat exchanger by the fan in the heat-preservation pipeline, and the cold air is changed into high-temperature gas after absorbing the waste heat of automobile tail gas and then is blown into the equipment room through the pipeline to the fin evaporator, so that defrosting is realized.

The utility model provides an utilize refrigerator car of automobile exhaust waste heat defrosting, in order to make the freezer interior temperature unanimous, cut apart into two parts with heated board for the refrigerator, be walk-in and equipment room respectively, the electronic swing leaf in walk-in top is used for communicateing between the equipment room, there are fan, fin evaporator between the equipment room, the fan is in food walk-in top, and fin evaporator is in the equipment room top, and when refrigerating, the check valve also closed in the time of the fan stop work, and the fan of walk-in top blows in the back top between the equipment room with the low temperature gas that fin evaporator produced, evenly sends into in the freezer room by electronic swing leaf, realizes the even refrigeration of article.

According to the refrigerator car capable of defrosting by using the waste heat of the automobile exhaust, the outlet of the shell-and-tube type smoke heat exchanger is connected with the refrigerating box equipment room through the heat preservation pipe, the heat preservation check valve is used for controlling high-temperature gas generated by the shell-and-tube type smoke heat exchanger to enter the equipment room, the heat preservation check valve is closed during refrigeration, and during defrosting, the high-temperature gas generated by the shell-and-tube type smoke heat exchanger enters the equipment room through the heat preservation check valve to defrost the fin evaporator.

The refrigerator car defrosting by using the waste heat of the automobile exhaust is different from the traditional defrosting control mode, the defrosting start and stop control method uses the intelligent capacitive defrosting control method, the thickness of a frost layer formed on an evaporator is continuously increased, the capacitance value between two radiating fins is gradually increased, when the capacitance value is increased to a certain value, defrosting starts, the two capacitance values are reduced along with the reduction of the thickness of the frost layer on the evaporator, when the thickness is reduced to a certain value, the defrosting stop is compared with the traditional defrosting control method, the intelligent capacitive defrosting control method is higher in accuracy, and the refrigerating efficiency is improved

The refrigerator car for defrosting by using the waste heat of the automobile exhaust is characterized in that a refrigerator of the refrigerator car is made of heat-insulating materials, an air inlet and an air outlet of a shell-and-tube type smoke heat exchanger of the refrigerator car are connected with equipment room of the refrigerator car through heat-insulating pipelines, the heat-insulating pipelines are made of heat-insulating materials, a fan in each heat-insulating pipeline is arranged in an air inlet channel, and an air inlet and an air outlet check valve of the shell-and-tube type smoke heat exchanger are heat-insulating check valves.

The utility model provides a novel defrosting mode, solves the problems that the traditional defrosting mode, such as manual defrosting and natural defrosting, cannot timely defrost, improves the defrosting stability of a refrigerator car, and provides good storage conditions for transported objects.

Drawings

Fig. 1 is a schematic structural view of a refrigerator car for defrosting by using waste heat of tail gas according to the present invention.

Fig. 2 is a schematic view of a refrigeration process of a refrigerator car for defrosting by using waste heat of tail gas according to the present invention.

Fig. 3 is a schematic diagram of a defrosting process of a refrigerator car using waste heat of tail gas to defrost.

In fig. 1, 11-electric swinging vane; 2-shell and tube type flue gas heat exchanger; 3-air outlet of the shell-and-tube type flue gas heat exchanger; 4-refrigerator car exhaust funnel; 5, 9, 20-heat preservation check valve; 6, 18-heat preservation pipeline; 7-a parallel plate capacitor; 8, 19-blower; 10, 17-temperature probe; 12-refrigerator car body; 13-equipment room; 14-heat preservation partition board; 15-a refrigerating chamber; 16-fin evaporator; 21-shell and tube type gas heat exchanger air inlet; 22-refrigerator car engine.

The specific implementation mode is as follows:

the utility model is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1, the refrigerator car for defrosting by using waste heat of automobile exhaust according to the present invention includes: 1, swinging a blade electrically; a shell-and-tube heat exchanger 2; a gas outlet 3 of the shell-and-tube type flue gas heat exchanger; 4, an exhaust funnel of the refrigerator car; 5, a heat preservation check valve; 6, insulating the pipeline; 7 a parallel plate capacitor; 8, a fan; 9, a heat preservation check valve; 10 a temperature detector; 11, swinging the leaves electrically; 12 a refrigerated vehicle cabinet; 13, equipment room; 14 heat preservation partition boards; 15 a refrigerating chamber; a 16-fin evaporator; 17 a temperature detector; 18 heat-insulating pipelines; 19 a fan; 20, a heat-preservation check valve; 21 shell and tube type gas inlet of the flue gas heat exchanger; 22 refrigerated vehicle engine.

The utility model relates to an utilize refrigerator car of automobile exhaust waste heat defrosting, when the refrigerator car refrigeration, the electronic pendulum leaf (11) of cold-stored room (15) top in refrigerator car box (12) are opened, and electronic pendulum leaf (1) is in addition in order to open shell and tube heat exchanger and the air heat transfer of being convenient for. A fan (8) in an equipment room (13) in a refrigerator car body (12) starts to rotate, a heat preservation check valve (5) is closed, a heat preservation check valve (20) blade is closed, the heat preservation check valve (1) is opened, a fan (19) in a heat preservation pipeline (18) stops rotating, and the fan (8) in the equipment room (13) blows low-temperature air generated by a fin evaporator (16) into a refrigerating chamber (15) from the equipment room (13) in the refrigerator car body (12) through an electric swinging blade (11) so as to achieve the effects of freezing and refrigerating food.

The utility model relates to a refrigerator car utilizing automobile exhaust waste heat to defrost, go on along with the refrigerator car refrigeration, the temperature in the cold-stored room in the refrigerator car box (12) reduces gradually, again because the humidity is great in the cold-stored room, when the temperature that detects of temperature detector (17) between the cold-stored room is less than the dew point temperature that the humidity corresponds in cold-stored room (15), will produce frost in cold-stored room (15), also can corresponding production frost on fin evaporator (16) in cold-stored room (15), along with the refrigerating output of cold-stored room (15) constantly increases, the temperature that temperature detector (17) shows in the cold-stored room reduces constantly, the frost layer on fin evaporator (16) is continuous and the bodiness is continuous, plate capacitor (7) capacitance value increases, when the thickness of frost reaches a definite value on the fin in fin evaporator (16), the capacitance value that shows on plate capacitor (7) reaches the defrosting setting value, the defrosting is started, the electric swing blades (1) and (11) are closed, the fan (8) stops rotating, the heat-preservation check valve (5) is opened, the heat-preservation check valve (20) is opened, at the moment, the fan (19) in the heat-preservation pipeline (18) starts rotating, low-temperature air in an equipment room (16) in the refrigerator car body (12) enters the shell-and-tube type smoke heat exchanger (2) through the fan (19) and the heat-preservation check valve (20) at the heat-preservation pipeline (18), the heat of tail gas from the exhaust cylinder (4) of the refrigerator car is absorbed in the shell-and-tube type smoke heat exchanger (2) and is changed into high-temperature gas, the generated high-temperature gas enters the equipment room (13) in the refrigerator car body (12) through the heat-preservation check valve (5) in the heat-preservation pipeline (6) to defrost the fin evaporator (16), when the thickness of a frost layer on fins in the fin evaporator (16) is gradually reduced, the capacitance value measured by the flat capacitor (7) is also reduced, when the capacitance value measured by the flat capacitor (7) is reduced to a set defrosting stop fixed value, the defrosting operation on the fin evaporator (16) is stopped, the electric swing blade (10) is opened, the electric swing blade (1) is also opened, at the moment, the fan (8) in the equipment room (13) in the refrigerator car body (12) starts to rotate, the heat-preservation check valve (5) is closed, the heat-preservation check valve (20) is closed, the fan (19) stops rotating, and the refrigerator car transport car starts a new round of refrigeration cycle.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (4)

1. The utility model provides an utilize refrigerator car of automobile exhaust waste heat defrosting, includes defroster, its characterized in that, defroster include shell and tube formula gas heater, vehicle vent-pipe, fan and heat preservation check valve, and during the defrosting, refrigerating system stop work, and electronic swing leaf is closed, and equipment room fan stall, and the interior fan of heat preservation pipeline drives cold air, and the heat preservation check valve opens, and cold air in the equipment room gets into shell and tube formula gas heater and absorbs the heat that comes from in the vehicle vent-pipe and form high-temperature gas, and high-temperature gas gets into the equipment room by shell and tube formula gas heater.

2. The refrigerator car for removing frost by using waste heat of automobile exhaust according to claim 1, wherein the temperature in the refrigerator compartment is uniform, the refrigerator compartment is divided into a refrigerating compartment and an equipment room, a partition board used in the refrigerating compartment and the equipment room is a heat insulation partition board, the refrigerating compartment and the equipment room are connected through an electric swing vane, the equipment room is provided with a fan and a fin evaporator, the fan is arranged above the refrigerating compartment, the fin evaporator is arranged above the equipment room, during refrigeration, a heat insulation check valve of the fan in the heat insulation pipeline stops working, the fan in the equipment room starts working, and low-temperature gas generated by the fin evaporator uniformly enters the refrigerating compartment through the electric swing vane.

3. The refrigerator car for removing frost by using waste heat of automobile exhaust according to claim 2, wherein the outlet of said shell-and-tube type flue gas heat exchanger is connected to the equipment room of the refrigerator through a heat-insulating pipe, and a heat-insulating check valve controls the high-temperature gas generated by the flue gas heat exchanger to enter the equipment room.

4. The refrigerator car for defrosting by using the waste heat of the tail gas of the automobile as claimed in claim 3, wherein the air inlet and the air outlet of the shell-and-tube type flue gas heat exchanger are connected with the equipment through heat preservation pipelines, the fan is arranged in the air inlet channel, and the check valves of the air inlet and the air outlet of the shell-and-tube type flue gas heat exchanger are heat preservation check valves.

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