CN202648304U - Variable frequency freezer - Google Patents
Variable frequency freezer Download PDFInfo
- Publication number
- CN202648304U CN202648304U CN 201220267672 CN201220267672U CN202648304U CN 202648304 U CN202648304 U CN 202648304U CN 201220267672 CN201220267672 CN 201220267672 CN 201220267672 U CN201220267672 U CN 201220267672U CN 202648304 U CN202648304 U CN 202648304U
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- compressor
- control module
- variable frequency
- freezer
- frequency conversion
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Abstract
The utility model belongs to the field of refrigeration equipment, and in particular relates to a variable frequency freezer which is convenient to control and good in energy conservation. The variable frequency freezer comprises a mechanical temperature controller, a variable frequency control module and a compressor, wherein the mechanical temperature controller is connected onto the variable frequency control module through an interface circuit and is responsible for sensing the interior temperature of the freezer and transmitting a switching signal to a micro-programmed control unit (MCU) of the variable frequency control module; and the MCU acquires the switching signal from the mechanical temperature controller, analyzes and processes the signal and intelligently analyzes the on-off ratio of the compressor to control the running speed of the compressor. The variable frequency freezer is simple in structure, convenient to operate and particularly suitable for the refrigeration control of the freezer; and the variable frequency control module of the variable frequency freezer can intelligently record the on-off ratio of the compressor so as to control the running speed of the compressor and achieve the aim of energy conservation.
Description
Technical field
The utility model belongs to art of refrigeration units, particularly a kind of frequency conversion refrigerator of controlling convenience, good energy saving property.
Background technology
Household electrical appliance, such as air-conditioning, refrigerator, washing machine etc. more and more adopted VFC, to reach purpose energy-conservation and the reduction noise; Traditional frequency-variable controller comprises VFC module and control signal module two parts, wherein, the control signal module is human-computer interaction module, can realize according to people's signal input the control to the VFC module, after the instruction of VFC module reception control signal module, regulate the running speed of compressor, to reach the process of VFC.
Refrigerator-freezer as a kind of refrigeration plant, does not need complicated human-computer interaction interface, and therefore, above-mentioned VFC is for nobody's machine interactive interfaces such as refrigerator-freezer, the simple refrigeration plant of control, and is and impracticable.
The utility model content
The utility model proposes a kind of frequency conversion refrigerator, utilize the mechanical thermostat realization to the variable frequency adjustment of compressor, have convenient, the simple in structure and good energy-saving effect of control.
To achieve these goals, the technical solution adopted in the utility model is:
The frequency conversion refrigerator, comprise mechanical thermostat, VFC module, compressor, mechanical thermostat is connected on the VFC module by interface circuit, and the VFC module comprises control module, inverter circuit, the input of inverter circuit is the DC voltage input, and output is connected with compressor.
Preferably, described mechanical thermostat comprises gear adjusting knob, spring leaf switch, refrigerant temperature sensor and switching signal lead-out terminal, and the switching signal lead-out terminal is connected with interface circuit.
Preferably, described control module is the MCU control module.
Preferably, described inverter circuit is by mains-supplied, is provided with the EMC filter rectifier at the connecting circuit of civil power and inverter circuit, and the input terminal voltage of inverter circuit is the 310V DC voltage.
Preferably, described compressor is frequency-changeable compressor.
Preferably, be provided with feedback protection circuit on the connecting circuit of described inverter circuit and compressor, this feedback protection circuit is connected on the control module.
Preferably, described MCU control module is by the 5V DC-voltage supply.
The utility model has the advantages that:
Frequency conversion refrigerator in the utility model utilizes mechanical thermostat to set the cryogenic temperature of refrigerator inside, and is easy and simple to handle, overcome the interactive process of household electrical appliance complexity such as air-conditioning, refrigerator, washing machine; The switching signal of MCU control module collection machinery temperature controller output, the startup-shutdown time of intellectual analysis compressor, by voltage and the frequency change of control inverter circuit, adjust the speed of service of compressor, control is simple; The circuit that is connected with compressor at inverter circuit is provided with feedback protection circuit, in time cuts off the power supply when guaranteeing to occur overcurrent, overvoltage or overload, guarantees the job security of compressor; The VFC module can be according to the switching of freezer door body, the intelligent speed of service of regulating compressor of variation of load, to reach energy-conservation purpose.
Description of drawings
Fig. 1 is the structured flowchart of VFC refrigerator in the utility model;
Fig. 2 is the structure chart of mechanical thermostat in the utility model;
Fig. 3 is the system block diagram of frequency conversion control circuit in the utility model;
Fig. 4 is the VFC flow chart of frequency conversion refrigerator in the utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and the specific embodiment:
Embodiment
The frequency conversion refrigerator, comprise mechanical thermostat 1, VFC module 2, compressor 3, mechanical thermostat 1 is connected on the VFC module 2 by interface circuit, the VFC module comprises the MCU control module, inverter circuit, inverter circuit is powered by civil power, connecting circuit at civil power and inverter circuit is provided with the EMC filter rectifier, the input terminal voltage of inverter circuit is the 310V DC voltage, the output of inverter circuit is connected with compressor, inverter circuit is under the control of VFC module, the 310V direct current is converted to all any adjustable alternating currents of frequency and voltage, realizes the frequency control to compressor, this compressor is frequency-changeable compressor; The MCU control module is by the 5V DC-voltage supply.
Mechanical thermostat comprises gear adjusting knob, spring leaf switch, refrigerant temperature sensor and switching signal lead-out terminal, and the gear adjusting knob is for the cryogenic temperature of setting refrigerator-freezer inside; Refrigerant temperature sensor, compare the actual temperature of refrigerator-freezer inside and the size of cryogenic temperature, when the actual temperature of refrigerator-freezer inside is higher than cryogenic temperature, the spring leaf switch connection, mechanical thermostat output starting-up signal, when the actual temperature of refrigerator-freezer inside is lower than cryogenic temperature, spring leaf switch connection, mechanical thermostat output off signal; The switching signal lead-out terminal is responsible for the switching signal of mechanical thermostat is passed to the MCU control module, and its end is connected on the spring leaf switch, and the other end is connected on the interface circuit.
Connecting circuit at inverter circuit and compressor is provided with feedback protection circuit; this feedback protection circuit is connected on the control module; in time outage when overcurrent, overvoltage or overload occurring on the MCU control module detects the connecting circuit of inverter circuit and compressor is to guarantee the job security of compressor.
Its work engineering is roughly as follows:
1, starts the frequency conversion refrigerator;
2, set the cryogenic temperature of refrigerator-freezer inside by mechanical thermostat;
3, compare the actual temperature of refrigerator-freezer inside and the size of cryogenic temperature, if actual temperature is higher than cryogenic temperature, mechanical thermostat output starting-up signal, frequency conversion control circuit work, compressor operating forwards step 4 to; If actual temperature is lower than cryogenic temperature, mechanical thermostat output off signal, frequency conversion control circuit quits work, and compressor does not move;
4, compressor moves with the power speed of maximum first, the refrigerator-freezer internal temperature is reduced rapidly, the startup-shutdown time of VFC plate analysis compressor, when if the start-stop during twice operation in compressor front and back is less than or equal to setting value M than difference, compressor operating speed begins close to best COP value spot speed gradually, forwards step 5 to; If still greater than setting value M, compressor continues high-speed cruising to the start-stop during twice operation in compressor front and back than difference;
5, behind the compressor operating Speed Reduction, the startup-shutdown time of VFC plate analysis compressor, if before and after the compressor start-stop in twice when operation than difference greater than setting value N, compressor operating speed continues close to best COP value spot speed; When the start-stop when twice operation in compressor front and back was less than or equal to setting value N than difference, compressor operating speed continued to reduce, until compressor moves with the speed of best COP value point, compressor is in steady operational status;
6, compressor stable operation is when best COP value spot speed, if the twice startup-shutdown ratio in front and back changes greater than the M value, compressor withdraws from steady operational status, forwards step 4 to, rebulids a new steady operational status.
Because compressor is during first with the power speed operation of maximum so that the inner actual temperature of refrigerator-freezer is rapidly near cryogenic temperature, stable after, the startup-shutdown ratio before and after the compressor during twice operation changes little; After this; compressor speed reduces; and close to best COP value spot speed; in this process; compressor startup-shutdown ratio changes greatly; therefore, twice start-stop in the front and back of compressor stable operation in the high-speed cruising process set difference N less than compressor to the start-stop ratio in the best COP value spot speed approach process than setting difference M.
When occurring that switch refrigerator door, chilled load increase or during the situation such as minimizing; the available machine time of compressor or downtime can change; so that before and after the compressor twice start-stop than difference greater than M; compressor withdraws from steady operational status; at this moment; VFC plate control compressor operating speed raises or reduces, and rebulids a new steady operational status.
Certainly; above-described embodiment is not to restriction of the present utility model; the utility model also is not limited to above-mentioned giving an example; should be noted that; those skilled in the art is under the instruction of this specification; any distortion of making, variation, change or replacement form all drop within the scope of this specification, ought to be subject to protection of the present utility model.
Claims (7)
1. frequency conversion refrigerator, it is characterized in that: comprise mechanical thermostat, VFC module, compressor, mechanical thermostat is connected on the VFC module by interface circuit, the VFC module comprises control module, inverter circuit, the input of inverter circuit is the DC voltage input, and output is connected with compressor.
2. frequency conversion refrigerator according to claim 1, it is characterized in that: described mechanical thermostat comprises gear adjusting knob, spring leaf switch, refrigerant temperature sensor and switching signal lead-out terminal, and the switching signal lead-out terminal is connected with interface circuit.
3. frequency conversion refrigerator according to claim 1, it is characterized in that: described control module is the MCU control module.
4. frequency conversion refrigerator according to claim 1 is characterized in that: described inverter circuit is by mains-supplied, is provided with the EMC filter rectifier at the connecting circuit of civil power and inverter circuit, and the input terminal voltage of inverter circuit is the 310V DC voltage.
5. frequency conversion refrigerator according to claim 1, it is characterized in that: described compressor is frequency-changeable compressor.
6. according to claim 1 to the described frequency conversion refrigerator of 5 any one, it is characterized in that: be provided with feedback protection circuit on the connecting circuit of described inverter circuit and compressor, this feedback protection circuit is connected on the control module.
7. frequency conversion refrigerator according to claim 3, it is characterized in that: described MCU control module is by the 5V DC-voltage supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220267672 CN202648304U (en) | 2012-06-07 | 2012-06-07 | Variable frequency freezer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220267672 CN202648304U (en) | 2012-06-07 | 2012-06-07 | Variable frequency freezer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202648304U true CN202648304U (en) | 2013-01-02 |
Family
ID=47417401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220267672 Expired - Lifetime CN202648304U (en) | 2012-06-07 | 2012-06-07 | Variable frequency freezer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202648304U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441732A (en) * | 2013-09-10 | 2013-12-11 | 时光科技有限公司 | Refrigerator and inverter compressor controlling device thereof |
| CN107422762A (en) * | 2017-06-20 | 2017-12-01 | 合肥天鹅制冷科技有限公司 | Cold liquid electrical-mechanical control system with switch control with fine adjustment |
| CN112524852A (en) * | 2020-12-03 | 2021-03-19 | 中电海康集团有限公司 | Self-adaptive frequency conversion method and system of refrigeration compressor |
-
2012
- 2012-06-07 CN CN 201220267672 patent/CN202648304U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441732A (en) * | 2013-09-10 | 2013-12-11 | 时光科技有限公司 | Refrigerator and inverter compressor controlling device thereof |
| CN107422762A (en) * | 2017-06-20 | 2017-12-01 | 合肥天鹅制冷科技有限公司 | Cold liquid electrical-mechanical control system with switch control with fine adjustment |
| CN112524852A (en) * | 2020-12-03 | 2021-03-19 | 中电海康集团有限公司 | Self-adaptive frequency conversion method and system of refrigeration compressor |
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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 |
Granted publication date: 20130102 |
|
| CX01 | Expiry of patent term |