CN202281338U - Post-heating control device in cooler - Google Patents
Post-heating control device in cooler Download PDFInfo
- Publication number
- CN202281338U CN202281338U CN201120417463XU CN201120417463U CN202281338U CN 202281338 U CN202281338 U CN 202281338U CN 201120417463X U CN201120417463X U CN 201120417463XU CN 201120417463 U CN201120417463 U CN 201120417463U CN 202281338 U CN202281338 U CN 202281338U
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- Prior art keywords
- valve
- air
- valves
- hot gas
- air inlet
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Abstract
The utility model discloses a post-heating control device in a cooler, comprising an air inlet, a plurality of air paths, a valve group, a controller and an air outlet, wherein the air inlet is connected with an exhaust port of a compressor; the plurality of air paths are respectively connected with the air inlet in parallel and used for shunting hot air; the valve group is used for controlling hot air flow rate passing through the air paths and comprises a plurality of valves each of which controls connection and disconnection of one air path, wherein the effective pass-through areas of the valves are sequentially increased by about 2 times; the controller is used for controlling connection and disconnection of the plurality of valves in the valve group; and the air outlet is connected with the plurality of air paths and is connected with the air inlet of a rear heater. In the utility model, hot air pulse and valve loss, caused by the situation that the valve is frequently switched on and off, are avoided, the effect of connection and disconnection of the valve on post-heating pulse ripple is effectively eliminated, temperature and humidity control precision of the cooler is improved, the service life of the valve is prolonged and the fault maintaining cost is reduced.
Description
Technical field
The utility model relates to a kind of back heating control apparatus, relates in particular to the back heating control apparatus that is used to regulate air humidity in a kind of cooler
Background technology
Need air cooling equipment that the constant temperature and humidity air is provided under many occasions, like constant temperature and humidity machine and grain cooling machine.Grain cooling machine needs accurate control air-out air humidity when cereal is lowered the temperature, with the storage safe (high humility causes cereal mouldy, rotten, and low humidity can cause cereal to lose moisture) that guarantees cereal.The control method of the air-out relative humidity of air cooling machine is generally: the highly humid air to after the cooling heats; Improve relative air humidity (that is: back heating and dehumidification method); Through the control degree of heat, obtain the relative air humidity of needs, reach the purpose of humidity control.
Common heating and dehumidification is that a post-heater is installed after evaporimeter; This post-heater is connected with exhaust outlet of compressor through controllable magnetic valve; Make-and-break time control hot gas through magnetic valve gets into the flow of back heating; Thereby control the back degree of heat through control hot gas flow, reach the purpose of regulating control air-out relative air humidity.
Utilize the flow of the break-make control hot gas entering post-heater of magnetic valve, have 2 unfavorable factors:
1. the logical and disconnected action of magnetic valve forms the hot gas pulse, causes the transient fluctuation of back heating bigger, and transient fluctuation can influence air humidity and temperature control simultaneously.
2. the frequent break-make of magnetic valve influences magnetic valve service life, increases fault, increases maintenance cost.
The utility model content
The utility model technical problem to be solved is that a kind of back heating control apparatus that can adjust the hot gas flow flexibly need be provided, and when avoiding the too frequent break-make of valve, required multiple different hot gas flow can be provided.
In order to solve the problems of the technologies described above, the utility model provides the back heating control apparatus in a kind of cooler, it is characterized in that, comprising: air inlet, link to each other with exhaust outlet of compressor, and be used to receive the hot gas that said compressor is discharged; A plurality of gas circuits, parallel connection ground links to each other with said air inlet respectively, is used for said hot gas is shunted; Valve sets is used to control the hot gas flow through said gas circuit, comprises a plurality of valves that equate with said gas circuit quantity, and said a plurality of valves are respectively controlled the break-make of a said gas circuit, and the effective discharge area of said a plurality of valves is big with about 2 multiplications successively; Controller is used for controlling the break-make of said a plurality of valves of said valve sets; The gas outlet links to each other with said a plurality of gas circuits and links to each other with the post-heater air inlet, is used for the hot gas through said valve sets is transported to said post-heater.
Further, the said controller valve break-make that is used for controlling said valve sets any amount is to be combined into the different areas that passes through.
Further, the valve in the said valve sets is a magnetic valve.
Further, the quantity of said valve is at least 3.
Further, in the valve in the said valve sets, has the pairing area that passes through of hot gas changes in flow rate precision that the effective discharge area of smallest effective through the valve of area is said back heating control apparatus.
Further, the valve quantity in the said valve sets is 3, and effective discharge area is about A, 2A and 4A successively, and wherein A is the pairing area that passes through of said hot gas changes in flow rate precision.
Compared with prior art, the utlity model has following advantage:
Obtain the multiple area that passes through through the valve that is combined into different effective discharge areas; Can regulate hot gas flow neatly through the back heating control apparatus of the utility model; Avoided hot gas pulse and valve loss that frequent on-off valve brought, thereby can effectively eliminate of the influence of valve break-make, improved the Temperature and Humidity Control precision of cooler the back heating; Prolong the service life of valve, reduce the breakdown maintenance cost.
Further feature of the utility model and advantage will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through implementing the utility model.The purpose of the utility model can realize through the structure that in specification, claims and accompanying drawing, is particularly pointed out and obtain with other advantages.
Description of drawings
Accompanying drawing is used to provide the further understanding to the utility model, and constitutes the part of specification, is used to explain the utility model with the embodiment of the utility model, does not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 is the structural representation according to the back heating control apparatus of the utility model;
Fig. 2 is according to the valve effective discharge area table in the back heating control apparatus of the utility model;
Fig. 3 is according to combination in the back heating control apparatus of the utility model and effective discharge area corresponding tables.
The specific embodiment
Below will combine accompanying drawing and embodiment to specify the embodiment of the utility model, how the application technology means solve technical problem to the utility model whereby, and the implementation procedure of reaching technique effect can make much of and implement according to this.Need to prove that only otherwise constitute conflict, each embodiment in the utility model and each characteristic among each embodiment can mutually combine, formed technical scheme is all within the protection domain of the utility model.
The utility model provides a kind of back heating control apparatus, and main composition is air inlet, gas outlet, a plurality of gas circuit, controller and valve sets.
The structure of the back heating control apparatus of the utility model is as shown in Figure 1, and air inlet links to each other with exhaust outlet of compressor, is used to receive the hot gas that compressor is discharged.The gas outlet links to each other with the post-heater air inlet, is used for the hot gas input post-heater through this control device.Parallelly connected between air inlet and gas outlet a plurality of gas circuits are set, are used for the hot gas that flows into is shunted.Valve sets is used to control the hot gas flow through gas circuit, wherein comprises a plurality of valves, and valve quantity can equate that with gas circuit quantity valve is preferably magnetic valve, the break-make of a gas circuit of each valve control.Controller is used for the break-make of each valve of by-pass valve control group, can the by-pass valve control group in any amount valve break-make at any time, that is, the break-make of valve is made up.
Each valve in valve sets is set to have different effective and passes through area.Through each valve break-make being made up to realize multiple different hot gas flow.Concrete, the effective discharge area of each valve has little of multiplication greatly successively, valve effective discharge area table as shown in Figure 2; The effective discharge area of the valve 1 that effective discharge area is minimum is A; Then the effective discharge area of other valve doubles successively by sequence number and is about 2A, 4A, 8A......2
N-1Deng, n is a valve quantity.Like this, the break-make combination through the controller by-pass valve control can obtain the arbitrary integer combination of passing through area doubly with A, and the minimum gross area is A, and the maximum gross area is about: A+2A+...2
N-1A=(2
n-1) A, thus according under the different situations to the needs of different hot gas flows, control different valve break-makes to be combined into the area that passes through that needs.
Shown in valve combination among Fig. 3 and effective discharge area corresponding tables, when needs were A or 2A through area, only Open valve 1 or valve 2 got final product, when needs 3A, and then simultaneously Open valve 1 and valve 2, and the like.With 3 valves is example, can obtain the effective discharge area of A to 7A respectively.Can select the suitable valve smallest effective through area A according to the needs of working control precision, the A of selection be more little, and the difference of each grade variation is more little, and control accuracy is high more.Preferably, pass through area A through area as smallest effective with hot gas changes in flow rate precision is pairing.
The break-make of the utility model through valve in the controller by-pass valve control group is to be combined into the different areas that passes through; Hot gas flow to through the back heating control apparatus of the utility model is controlled; Can adapt to thus when under different condition, regulating humidity, the needs of hot gas flow.The back heating control apparatus of the utility model has been avoided hot gas pulse and the valve loss that frequent on-off valve brought; Thereby can effectively eliminate of the influence of valve break-make to the pulse ripple of back heating; Improved the Temperature and Humidity Control precision of cooler; Prolong the service life of valve, reduce the breakdown maintenance cost.
Certainly; The utility model also can have other various embodiments; Under the situation that does not deviate from the utility model spirit and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the claim of the utility model.
Claims (6)
1. the back heating control apparatus in the cooler is characterized in that, comprising:
Air inlet links to each other with exhaust outlet of compressor, is used to receive the hot gas that said compressor is discharged;
A plurality of gas circuits, parallel connection ground links to each other with said air inlet respectively, is used for said hot gas is shunted;
Valve sets is used to control the hot gas flow through said gas circuit, comprises a plurality of valves that equate with said gas circuit quantity, and said a plurality of valves are respectively controlled the break-make of a said gas circuit, and the effective discharge area of said a plurality of valves is big with about 2 multiplications successively;
Controller is used for controlling the break-make of said a plurality of valves of said valve sets;
The gas outlet links to each other with said a plurality of gas circuits and links to each other with the post-heater air inlet, is used for the hot gas through said valve sets is transported to said post-heater.
2. device according to claim 1 is characterized in that, the valve break-make that said controller is used for controlling said valve sets any amount is to be combined into the different areas that passes through.
3. device according to claim 1 is characterized in that, the valve in the said valve sets is a magnetic valve.
4. device according to claim 1 is characterized in that, the quantity of said valve is at least 3.
5. device according to claim 1 is characterized in that, in the valve in the said valve sets, has the pairing area that passes through of hot gas changes in flow rate precision that the effective discharge area of smallest effective through the valve of area is said back heating control apparatus.
6. device according to claim 5 is characterized in that, the valve quantity in the said valve sets is 3, and effective discharge area is about A, 2A and 4A successively, and wherein A is the pairing area that passes through of said hot gas changes in flow rate precision.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120417463XU CN202281338U (en) | 2011-10-27 | 2011-10-27 | Post-heating control device in cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120417463XU CN202281338U (en) | 2011-10-27 | 2011-10-27 | Post-heating control device in cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202281338U true CN202281338U (en) | 2012-06-20 |
Family
ID=46227505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120417463XU Expired - Lifetime CN202281338U (en) | 2011-10-27 | 2011-10-27 | Post-heating control device in cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202281338U (en) |
-
2011
- 2011-10-27 CN CN201120417463XU patent/CN202281338U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120620 |