CN212673554U - Superheat high-temperature compensation control system - Google Patents
Superheat high-temperature compensation control system Download PDFInfo
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- CN212673554U CN212673554U CN202021594280.0U CN202021594280U CN212673554U CN 212673554 U CN212673554 U CN 212673554U CN 202021594280 U CN202021594280 U CN 202021594280U CN 212673554 U CN212673554 U CN 212673554U
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- temperature compensation
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Abstract
The utility model discloses a superheat degree high temperature compensation control system, including compressor, cross valve, condenser, flash vessel one and evaporimeter, the cross valve is connected to the compressor, and condenser and evaporimeter are still connected respectively to the cross valve, and flash vessel one is still connected to the condenser, and compressor and evaporimeter are connected respectively to flash vessel one minute two way output, the utility model discloses superheat degree high temperature compensation control system can solve the main valve and close the problem that leads to exhaust temperature to rise for a short time, guarantees that the control ability of main valve is in the optimal state simultaneously.
Description
Technical Field
The utility model relates to a control by temperature change technical field specifically is a superheat degree high temperature compensation control system.
Background
At present, return air superheat degree control modes commonly used in a heat pump system are applicable under common conditions, but under the condition of overhigh exhaust temperature, the exhaust temperature of a press needs to be controlled in time, the purpose of reducing the running load of the machine is achieved, the superheat degree of the temperature of a coil pipe and a return air pipe at the moment can not completely detect the exhaust change, so that the problem can not be completely solved, the opening degree of an electronic expansion valve for controlling the flow of a machine refrigerant is not proper, the exhaust temperature is further increased, and the conditions of whole machine high-pressure protection and the like can be caused. Therefore, a superheat high temperature compensation control scheme needs to be provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a superheat degree high temperature compensation control system to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the superheat degree high-temperature compensation control system comprises a compressor, a four-way valve, a condenser, a first flash evaporator and an evaporator, wherein the compressor is connected with the four-way valve, the four-way valve is further respectively connected with the condenser and the evaporator, the condenser is further connected with the first flash evaporator, and the first flash evaporator is divided into two paths to output and is respectively connected with the compressor and the evaporator.
As a further technical solution of the present invention: and a first electronic expansion valve is arranged between the condenser and the first flash evaporator.
As a further technical solution of the present invention: and a second electronic expansion valve is arranged between the first flash evaporator and the evaporator.
As a further technical solution of the present invention: and an electromagnetic valve is arranged between the first flash evaporator and the compressor.
As a further technical solution of the present invention: the electromagnetic valve is an enthalpy-increasing electromagnetic valve.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses superheat degree high temperature compensation control system can solve the main valve and close the problem that leads to exhaust temperature to rise for a short time, guarantees that the control of main valve can be in the optimal state simultaneously.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is a graph of main valve opening versus temperature.
In the figure: the system comprises a compressor-1, a four-way valve-2, a condenser-3, an electronic expansion valve I-4, a flash evaporator I-5, an electronic expansion valve II-6, a solenoid valve-7 and an evaporator-8.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, example 1: the utility model provides a superheat degree high temperature compensation control system, includes compressor 1, cross valve 2, condenser 3, flash vessel 5 and evaporimeter 8, four-way valve 2 is connected to compressor 1, and cross valve 2 still connects condenser 3 and evaporimeter 8 respectively, and condenser 3 still connects flash vessel 5, and flash vessel 5 divides two way output, connects compressor 1 and evaporimeter 8 respectively.
When the machine works at an ultralow temperature, the temperature of the outdoor coil pipe and the temperature of the compressor air return pipe are far lower than the ambient temperature, and the temperature acquisition error is larger. The opening of an electronic expansion valve for controlling the flow of a refrigerant of a machine is not proper, so that the whole machine is not ideal in work, and on the basis, the invention adds another control mode: when the exhaust temperature is higher than a certain value, the electronic expansion valve can not be closed, and only the electronic expansion valve is opened or stopped on one side, so that the problem of exhaust rising caused by valve closing is avoided, but if the condition is continuously worsened, the opening degree of the valve is forcibly increased when the exhaust continues to rise. See fig. 2. Specific control method examples are as follows: when the exhaust temperature is higher than 75 deg (EE 23 parameter), the main valve opening is increased and not decreased, when the exhaust temperature is higher than 75 + m deg (m can be changed in EE), the main valve opening is increased at the speed of 6 steps/period, if the exhaust is not decreased, the opening is increased to the maximum: the temperature difference is n degrees (ee can be changed).
In embodiment 2, on the basis of embodiment 1, a first electronic expansion valve 4 is arranged between the condenser 3 and the first flash evaporator 5, a second electronic expansion valve 6 is arranged between the first flash evaporator 5 and the evaporator 8, a solenoid valve 7 is arranged between the first flash evaporator 5 and the compressor 1, and the solenoid valve 7 is an enthalpy-increasing solenoid valve.
It is obvious to a person skilled in the art that the invention is not limited to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention, and that the embodiments are therefore to be considered in all respects as exemplary and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides a superheat degree high temperature compensation control system, includes compressor (1), cross valve (2), condenser (3), flash vessel (5) and evaporimeter (8), its characterized in that, cross valve (2) are connected in compressor (1), and cross valve (2) still connect condenser (3) and evaporimeter (8) respectively, and flash vessel (5) are still connected in condenser (3), and flash vessel (5) divide two tunnel outputs, connect compressor (1) and evaporimeter (8) respectively.
2. A superheat degree high temperature compensation control system according to claim 1, wherein an electronic expansion valve (4) is provided between the condenser (3) and the flash evaporator (5).
3. A superheat degree high temperature compensation control system according to claim 1, wherein an electronic expansion valve two (6) is provided between the flash evaporator one (5) and the evaporator (8).
4. A superheat degree high temperature compensation control system according to claim 1, wherein a solenoid valve (7) is provided between the flash evaporator one (5) and the compressor (1).
5. A superheat high temperature compensation control system according to claim 4, characterized in that the solenoid valve (7) is an enthalpy-increasing solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021594280.0U CN212673554U (en) | 2020-08-04 | 2020-08-04 | Superheat high-temperature compensation control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021594280.0U CN212673554U (en) | 2020-08-04 | 2020-08-04 | Superheat high-temperature compensation control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212673554U true CN212673554U (en) | 2021-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021594280.0U Active CN212673554U (en) | 2020-08-04 | 2020-08-04 | Superheat high-temperature compensation control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212673554U (en) |
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2020
- 2020-08-04 CN CN202021594280.0U patent/CN212673554U/en active Active
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