CN214275921U - Refrigerating system suitable for northern cold area - Google Patents
Refrigerating system suitable for northern cold area Download PDFInfo
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- CN214275921U CN214275921U CN202120240412.8U CN202120240412U CN214275921U CN 214275921 U CN214275921 U CN 214275921U CN 202120240412 U CN202120240412 U CN 202120240412U CN 214275921 U CN214275921 U CN 214275921U
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Abstract
The utility model discloses a refrigeration system suitable for northern cold areas, which comprises a compressor, a condenser and an evaporator, wherein the high-pressure outlet of the compressor is connected with the inlet of the condenser through a pipeline, the outlet of the condenser is connected with the inlet of the evaporator through a pipeline, and the inlet of the evaporator is connected with the low-pressure inlet of the compressor through a pipeline; a normal temperature pressure controller and a low temperature pressure controller are arranged on a pipeline between the compressor and the condenser; the compressor and the evaporator are installed in the outer case body, and the wall of the outer case body is provided with the cooling fan and the atmospheric temperature controller. The atmospheric temperature is detected through the atmospheric temperature controller, different pressure controllers are selected to be connected into the working circuit through detection, the specific low-temperature pressure controller is used for detecting the pressure of the refrigerant in winter, the compressor halt caused by abnormal pressure of the refrigerant influenced by the atmospheric temperature is avoided, and the refrigerating effect in winter is ensured.
Description
The technical field is as follows:
the utility model relates to a refrigeration field, concretely relates to refrigerating system suitable for cold area in the north.
Background art:
at present, a refrigeration device mainly comprises a compressor, a condenser, an evaporator and a heat dissipation fan, wherein the compressor is used for compressing refrigerant steam, the heat dissipation fan is used for cooling the whole external unit in a heat dissipation manner, in normal use, the pressure controller detects the pressure of a low-pressure pipe of the compressor, and the pressure controller controls the compressor to stop when the pressure is lower than a set value.
In northern cold regions, the atmospheric temperature is lower than 0 ℃ in winter, but the room temperature can be kept at about 25 ℃ due to the indoor heating equipment; therefore, the atmospheric temperature can influence the temperature of the outer machine, the pressure of the low-pressure pipe of the compressor can be reduced, and the compressor can be frequently stopped or even not started, so that the refrigerating effect in winter is influenced.
The utility model has the following contents:
an object of the utility model is to provide a can be according to the refrigerating system of ambient temperature regulation compressor low pressure protection setting value.
The utility model discloses by following technical scheme implement:
a refrigerating system suitable for northern cold regions comprises a compressor, a condenser and an evaporator, wherein a high-pressure outlet of the compressor is connected with an inlet of the condenser through a pipeline, an outlet of the condenser is connected with an inlet of the evaporator through a pipeline, and an inlet of the evaporator is connected with a low-pressure inlet of the compressor through a pipeline; a normal temperature pressure controller and a low temperature pressure controller are arranged on a pipeline between the compressor and the condenser;
the compressor and the evaporator are arranged in an outer box body, and a heat dissipation fan and an atmospheric temperature controller are arranged on the box wall of the outer box body;
the atmospheric temperature controller is connected with a coil of a first relay in series to form a closed loop, a normally open contact of the first relay is connected with the normal temperature pressure controller in series to form a first series circuit, a normally closed contact of the first relay is connected with the low temperature pressure controller in series to form a second series circuit, and the first series circuit is connected with the second series circuit in parallel and then connected with the coil of the first contactor in series to form a closed loop; and the normally open contacts of the first contactor are arranged on circuits of the compressor and the cooling fan connected with the power supply.
Preferably, an outer machine inner temperature controller is further installed in the outer machine box body, the outer machine inner temperature controller is connected with the normally closed contact of the first relay and the coil of the delay relay in series to form a closed loop, the normally open contact of the delay relay is connected with the coil of the second contactor in series to form a closed loop, and the normally open contact of the second contactor is installed on a circuit of the cooling fan connected with the power supply.
The utility model has the advantages that: the atmospheric temperature is detected through the atmospheric temperature controller, different pressure controllers are selected to be connected into the working circuit through detection, the specific low-temperature pressure controller is used for detecting the pressure of the refrigerant in winter, the compressor halt caused by abnormal pressure of the refrigerant influenced by the atmospheric temperature is avoided, and the refrigerating effect in winter is ensured.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic diagram of the control circuit of the present invention.
In the figure: the air conditioner comprises a compressor 1, a condenser 2, an evaporator 3, a normal temperature pressure controller 4, a low temperature pressure controller 5, an outer machine box 6, a cooling fan 7, an atmospheric temperature controller 8, a first relay 9, a first contactor 10, an outer machine inner temperature controller 11, a time delay relay 12 and a second contactor 13.
The specific implementation mode is as follows:
as shown in fig. 1 and 2, a refrigeration system suitable for northern cold regions comprises a compressor 1, a condenser 2 and an evaporator 3, wherein a high-pressure outlet of the compressor 1 is connected with an inlet of the condenser 2 through a pipeline, an outlet of the condenser 2 is connected with an inlet of the evaporator 3 through a pipeline, and an inlet of the evaporator 3 is connected with a low-pressure inlet of the compressor 1 through a pipeline; a normal temperature pressure controller 4 and a low temperature pressure controller 5 are arranged on a pipeline between the compressor 1 and the condenser 2;
the compressor 1 and the evaporator 3 are arranged in an outer machine box body 6, a heat radiation fan 7 and an atmospheric temperature controller 8 are arranged on the box wall of the outer machine box body 6, and an outer machine temperature controller 11 is also arranged in the outer machine box body 6;
an atmospheric temperature controller 8 is connected with a coil of a first relay 9 in series to form a closed loop, a normally open contact of the first relay 9 is connected with a normal temperature pressure controller 4 in series to form a first series circuit, a normally closed contact of the first relay 9 is connected with a low temperature pressure controller 5 in series to form a second series circuit, the first series circuit and the second series circuit are connected in parallel and then connected with a coil of a first contactor 10 in series to form a closed loop, an outdoor temperature controller 11 is connected with the normally closed contact of the first relay 9 and a coil of a time delay relay 12 in series to form a closed loop, and the normally open contact of the time delay relay 12 is connected with a coil of a second contactor 13 in series to form a closed loop; a normally open contact of a first contactor 10 is arranged on a circuit of the compressor 1 connected with a power supply, and a normally open contact of a second contactor 13 is arranged on a circuit of the cooling fan 7 connected with the power supply;
in the refrigeration process, the compressor 1 extracts the refrigerant from a low-pressure area where the evaporator 3 is located, the refrigerant is sent to the condenser 2 of a high-pressure area after being compressed, heat is dissipated to the air through the radiating fins of the condenser 2, at the moment, the refrigerant is changed into liquid from gas, the pressure is continuously increased, the refrigerant flows to a low-pressure area from the high-pressure area and is sprayed into the evaporator 3 through a capillary tube, the pressure is suddenly reduced, the liquid refrigerant is immediately changed into gas, and a large amount of heat is absorbed through the radiating fins on the evaporator 3, so that the refrigeration effect is realized;
when the whole system is used, the atmospheric temperature controller 8 detects the atmospheric temperature, and after the atmospheric temperature is higher than 0 ℃, the atmospheric temperature controller 8 is not switched on, so that the first relay 9 is not electrified, the second series circuit is electrified, the normal temperature pressure controller 4 is switched into a working circuit, a coil of the first contactor 10 is electrified for actuation, a normally open contact of the first contactor 10 is closed, and the compressor 1 is switched on with a power supply for normal work;
meanwhile, the temperature controller 11 in the external unit detects the temperature in the external unit box 6, if the temperature in summer is high, after the temperature controller 11 in the external unit detects that the temperature is higher than a set value, a circuit connected with the temperature controller 11 in the external unit is switched on, a coil of the delay relay 12 is electrified, a normally open contact of the delay relay 12 is closed for 1 minute, a coil of the second contactor 13 is electrified, a normally open contact of the second contactor 13 is closed, the heat dissipation fan 7 is switched on to start working, and the heat dissipation fan 7 is ensured to be started for a period of time when the temperature of the external unit reaches a certain value by setting the delay relay 12, so that the service life reduction caused by frequent starting of the heat dissipation fan 7 is avoided;
when the normal temperature pressure controller 4 detects that the pressure is lower than the set value, the circuit connected with the normal temperature pressure controller 4 is disconnected, the coil of the first contactor 10 is powered off, the normally open contact of the first contactor 10 is disconnected, the compressor 1 is stopped, and the low-voltage protection of the compressor 1 is realized.
When the air temperature is lower than or equal to 0 ℃, a circuit connected with the atmospheric temperature controller 8 is switched on, a coil of the first relay 9 is electrified, a normally closed contact of the first relay 9 is disconnected, a normally open contact of the first relay 9 is closed, the first series circuit is electrified, the second series circuit is disconnected, the normal temperature pressure controller 4 is disconnected from the working circuit, the low temperature pressure controller 5 is connected into the working circuit, the coil of the first contactor 10 is electrified and sucked, the normally open contact of the first contactor 10 is closed, and the compressor 1 and the power supply are switched on to normally work; because the low-pressure set value set by the low-temperature pressure controller 5 is lower than the low-pressure set value set by the normal-temperature pressure controller 4, in cold winter, the temperature can cause the refrigerant pressure to be too low, so the low-temperature pressure controller 5 can ensure that the refrigeration system can still normally operate when the temperature affects the refrigeration system, until the refrigerant pressure is lower than the lowest value set by the low-temperature pressure controller 5, the circuit connected with the low-temperature pressure controller 5 is disconnected, the coil of the first contactor 10 loses power, the normally open contact of the first contactor 10 is disconnected, and the compressor 1 is stopped, thereby realizing the low-pressure protection of the compressor 1 in a low-temperature environment;
when the atmosphere is lower than or equal to 0 ℃, the heat dissipation fan 7 is not needed for heat dissipation, when a circuit connected with the atmosphere temperature controller 8 is switched on, the normally open contact of the first relay 9 is closed, the temperature controller 11 in the outdoor unit can be separated from a working circuit, and the heat dissipation fan 7 cannot be started in winter.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. The utility model provides a refrigerating system suitable for north cold district which characterized in that: the compressor comprises a compressor, a condenser and an evaporator, wherein a high-pressure outlet of the compressor is connected with an inlet of the condenser through a pipeline, an outlet of the condenser is connected with an inlet of the evaporator through a pipeline, and an inlet of the evaporator is connected with a low-pressure inlet of the compressor through a pipeline; a normal temperature pressure controller and a low temperature pressure controller are arranged on a pipeline between the compressor and the condenser;
the compressor and the evaporator are arranged in an outer box body, and a heat dissipation fan and an atmospheric temperature controller are arranged on the box wall of the outer box body;
the atmospheric temperature controller is connected with a coil of a first relay in series to form a closed loop, a normally open contact of the first relay is connected with the normal temperature pressure controller in series to form a first series circuit, a normally closed contact of the first relay is connected with the low temperature pressure controller in series to form a second series circuit, and the first series circuit is connected with the second series circuit in parallel and then connected with the coil of the first contactor in series to form a closed loop; and the normally open contacts of the first contactor are arranged on circuits of the compressor and the cooling fan connected with the power supply.
2. The refrigeration system of claim 1, further comprising: still install outer built-in temperature controller in the outer box, outer built-in temperature controller with the normally closed contact of first relay and the coil series connection of time delay relay form closed circuit, the normally open contact of time delay relay and the coil series connection of second contactor form closed circuit, install on the circuit that radiator fan and power are connected the normally open contact of second contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120240412.8U CN214275921U (en) | 2021-01-27 | 2021-01-27 | Refrigerating system suitable for northern cold area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120240412.8U CN214275921U (en) | 2021-01-27 | 2021-01-27 | Refrigerating system suitable for northern cold area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214275921U true CN214275921U (en) | 2021-09-24 |
Family
ID=77769435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120240412.8U Active CN214275921U (en) | 2021-01-27 | 2021-01-27 | Refrigerating system suitable for northern cold area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214275921U (en) |
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2021
- 2021-01-27 CN CN202120240412.8U patent/CN214275921U/en active Active
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