CN208247913U - Thermostatic type refrigeration unit suitable for refrigerated van type transport vehicle - Google Patents
Thermostatic type refrigeration unit suitable for refrigerated van type transport vehicle Download PDFInfo
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- CN208247913U CN208247913U CN201820779803.5U CN201820779803U CN208247913U CN 208247913 U CN208247913 U CN 208247913U CN 201820779803 U CN201820779803 U CN 201820779803U CN 208247913 U CN208247913 U CN 208247913U
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- evaporator
- temperature sensor
- evaporating fan
- compressor
- fan
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Abstract
The utility model discloses a kind of thermostatic type refrigeration units suitable for refrigerated van type transport vehicle, including being sequentially communicated compressor, condenser, fluid reservoir, drying bottle, expansion valve, the refrigerating circulation of evaporator, evaporating fan is provided with above the evaporator, defrost pipeline is provided between the compressor outlet and evaporator, the first temperature sensor is provided between the evaporating fan and evaporator, the second temperature sensor being provided in compartment near evaporating fan air outlet, first temperature sensor and the signal output end of second temperature sensor are connected with the signal input part of controller respectively, the control output end of the controller and the control signal of compressor and evaporating fan are respectively connected with.The utility model structure is simple, and investment is low, quick, by the intelligent starting of evaporating fan, the temperature in compartment is made to keep constant no fluctuation, not only increases cargo freshness, and reduce transportation cost.
Description
Technical field
The utility model relates to refrigeration unit technical fields, more particularly, to a kind of constant temperature suitable for refrigerated van type transport vehicle
Type refrigeration unit.
Background technique
Refrigerated van type transport vehicle is usually used in the long-distance transportation of frozen food, dairy produce, vegetable and fruit, vaccine drug etc.,
, with independent refrigeration unit and sealed loading space, the cold air that unit refrigeration generates is sent into loading space through evaporating fan for it.
When the surface temperature of unit evaporating fan is lower than 0 DEG C, it may occur that frost influences fan heat transfer, and then reduces refrigeration effect
Fruit.Therefore, refrigeration unit is other than comprising refrigerating circulation, is additionally provided with defroster duct, when work, refrigeration mode and defrosting
Mode is alternately.Under normal conditions, the surface temperature of defrosting finisher fin is up to 15 DEG C, and unit opens refrigeration mould at this time
Formula, evaporating fan can bring the waste heat on evaporator fin in loading space into, cause temperature in compartment to rise, influence the fresh-keeping of article
Effect.
Summary of the invention
To solve the above-mentioned problems, the utility model provides a kind of thermostatic type refrigeration machine suitable for refrigerated van type transport vehicle
Group.
To achieve the above object, the utility model can take following technical proposals:
Thermostatic type refrigeration unit described in the utility model suitable for refrigerated van type transport vehicle, including it has been sequentially communicated compression
The refrigerating circulation of machine, condenser, fluid reservoir, drying bottle, expansion valve, evaporator, the evaporator top are provided with evaporation
Fan is provided with defrost pipeline, sets between the evaporating fan and evaporator between the compressor outlet and evaporator
It is equipped with the first temperature sensor, the second temperature sensor being provided in compartment near evaporating fan air outlet, described
One temperature sensor and the signal output end of second temperature sensor are connected with the signal input part of controller respectively, the control
The control output end of device and the control signal of compressor and evaporating fan are respectively connected with.
Thermostatic type refrigeration unit provided by the utility model suitable for refrigerated van type transport vehicle, structure is simple, and investment is low, sees
Effect is fast, by the intelligent starting of evaporating fan, so that the temperature in compartment is kept constant no fluctuation, it is fresh-keeping to not only increase cargo
Degree, and reduce transportation cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
As shown in Figure 1, the thermostatic type refrigeration unit described in the utility model suitable for refrigerated van type transport vehicle, including successively
The refrigerating circulation of compressor 1, condenser 2, fluid reservoir 3, drying bottle 4, expansion valve 5, evaporator 6 is communicated with, on evaporator 6
Side is provided with the evaporating fan 7 for being blown to cold air in compartment, is provided between the outlet of compressor 1 and 6 import of evaporator
Defrost pipeline 8 is provided with the first temperature sensor 9 between evaporating fan 7 and evaporator 6, be provided in compartment and be located at evaporation wind
Fan the second temperature sensor 10 near 7 air outlets, the signal output end of the first temperature sensor 9 and second temperature sensor 10
It is connected respectively with the signal input part of controller, the control of the control output end of controller and compressor 1 and evaporating fan 7 inputs
End is respectively connected with.
In defrost mode, the refrigerant of high temperature and pressure is directly entered condensation in evaporator 6 by defrost pipeline 8 and dissipates unit
Heat, melts the frost of core surface, is returned in compressor 1 later.Unit completes defrosting operation, into refrigeration wait state.First
Temperature sensor 9 and second temperature sensor 10 transmit temperature signal to controller, when controller judge in compartment with evaporator 6
The temperature difference of fin surface sends a signal to compressor 1 and evaporating fan 7 at 1-3 DEG C, and unit opens refrigeration mode.In defrost
Terminate to refrigeration to restart in this period, the defrosting water of 6 fin surface of evaporator flows out outside vehicle by discharge pipe line, that is, is dripped
Aqueous mode.
Refrigeration unit described in the utility model implements delay refrigeration after defrosting, and it is following bad to can be avoided generation
Situation:
1, after unit defrosting operating condition, there is a large amount of moisture in evaporator core, if unit starts refrigeration immediately,
Evaporation fan then starts immediately, and the moisture remained on it is evaporated blower blowout core, is attached to cargo surfaces and easily causes knot
Frost causes damages to cargo, especially fruits cargo, will affect its mouthfeel.Again, when blower starts, a large amount of moisture is attached
On evaporation core body fin, unit refrigeration is easy to happen frosting again at this time, and then influences fan heat transfer, reduces unit refrigeration effect
Fruit.
2, evaporation fan intelligent starting, after unit defrosting operating condition, evaporation core body fin temperature is higher, at this time if opened
Dynamic refrigeration mode, evaporation fan enter the hot-air around evaporator in compartment, occur with the lower cold air of temperature in compartment
Heat exchange causes temperature fluctuation in compartment, needs to draw temperature again, makes the increase of transportation cost；Meanwhile in compartment temperature fluctuation
It is impaired to will also result in cargo, even more increases transportation cost, causes unnecessary loss.
Claims (1)
1. a kind of thermostatic type refrigeration unit suitable for refrigerated van type transport vehicle, including it has been sequentially communicated compressor (1), condenser
(2), the refrigerating circulation of fluid reservoir (3), drying bottle (4), expansion valve (5), evaporator (6), evaporator (6) top are set
It is equipped with evaporating fan (7), is provided with defrost pipeline (8), feature between compressor (1) outlet and evaporator (6) import
It is: is provided with the first temperature sensor (9) between the evaporating fan (7) and evaporator (6), is provided with to be located in compartment and steam
Send out the second temperature sensor (10) near fan (7) air outlet, first temperature sensor (9) and second temperature sensor
(10) signal output end is connected with the signal input part of controller respectively, the control output end of the controller and compressor
(1) it is respectively connected with the control signal of evaporating fan (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820779803.5U CN208247913U (en) | 2018-05-24 | 2018-05-24 | Thermostatic type refrigeration unit suitable for refrigerated van type transport vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820779803.5U CN208247913U (en) | 2018-05-24 | 2018-05-24 | Thermostatic type refrigeration unit suitable for refrigerated van type transport vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208247913U true CN208247913U (en) | 2018-12-18 |
Family
ID=66481207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820779803.5U Active CN208247913U (en) | 2018-05-24 | 2018-05-24 | Thermostatic type refrigeration unit suitable for refrigerated van type transport vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208247913U (en) |
-
2018
- 2018-05-24 CN CN201820779803.5U patent/CN208247913U/en active Active
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