Utility model content
The technical problems to be solved in the utility model is in order to when overcoming the operation of heat pump of prior art, air leakiness enters it
Low-pressure side and be gathered in its high-pressure side and cannot discharge the defect causing its disorderly closedown, provides a kind of dress of the emptying for heat pump
Put.
This utility model is to solve above-mentioned technical problem by following technical proposals:
A kind of emptier for heat pump, its feature is, it includes:
Collection pneumatic module, the second channel that described collection pneumatic module has first passage and is sheathed on described first passage, institute
The two ends stating first passage have the first import, first outlet, described second channel have the second air inlet, the second gas outlet,
Second liquid outlet, described first import is used for introducing low-temperature receiver, and described first outlet is used for discharging low-temperature receiver;
Downtake pipe, one end of described downtake pipe is connected with the first exhaust end of described heat pump, and described first
The other end of exhaustor is connected with described second air inlet, and is provided with the first valve in the pipeline of described downtake pipe;
Second exhaust pipe, one end of described second exhaust pipe is connected with described second gas outlet, and described second exhaust
It is provided with the second valve in the pipeline of pipe;
3rd discharging tube, one end of described 3rd discharging tube is connected with described second liquid outlet, described 3rd discharging tube
The other end be connected with the first liquid returning end of described heat pump, and be provided with the 3rd valve in the pipeline of described 3rd discharging tube.
It is preferred that the described pneumatic module that integrates is as case tube heat exchanger, described first passage is tube side passage, and described second channel is
Shell side passageway.
Case tube heat exchanger heat exchange efficiency is high, meets use demand.
It is preferred that the described pneumatic module that integrates is as double-tube heat exchanger, described first passage is inner pipe passway, and described second channel is
Outer tube passage.
Double-tube heat exchanger heat exchange efficiency is high, meets use demand
It is preferred that described second gas outlet, the second liquid outlet are located at the two ends of described second channel respectively, described second enters
QI KOU is located between described second gas outlet, the second liquid outlet and is located at the side of described second channel.
Using above-mentioned setting, it is easy to air and successfully discharges from the second gas outlet of second channel, and liquefy after heat exchange
Refrigerant liquid successfully return to the first liquid returning end of heat pump from the second liquid outlet.
It is preferred that described first exhaust end is located at the top of the condenser of described heat pump, described first liquid returning end is located at institute
State the bottom of condenser.
First exhaust end, the first liquid returning end are respectively positioned on the high-pressure side of heat pump, and this high-pressure side can be condenser, the top of condenser
The mixture for air and refrigerant gas of portion's accumulation, the bottom of condenser is refrigerant liquid.
It is preferred that described first valve, the second valve, the 3rd valve are electromagnetic valve.
Using electromagnetic valve can realize the first valve, the second valve, the 3rd valve automatically control so that emptier
Operation is more intelligent.
It is preferred that described condenser is provided with pressure transducer, at the water pipe of described condenser, it is provided with temperature sensor, described
Heat pump also has controller, and described controller is used for receiving the signal of described pressure transducer, temperature sensor, described controller
For controlling the switch of described first valve, the second valve, the 3rd valve.
Above-mentioned pressure transducer is used for detecting the pressure within condenser, can be scaled saturation temperature, temperature sensor is used
In detection actual temperature, actual temperature can calculate the degree of superheat with the difference of saturation temperature, judge emptying dress according to the degree of superheat
Put the need of startup or close.
It is preferred that described first exhaust end is located at the top of the reservoir of described heat pump, described first liquid returning end is located at institute
State the bottom of reservoir.
First exhaust end, the first liquid returning end are respectively positioned on the high-pressure side of heat pump, and this high-pressure side can be high-pressure reservoir.
It is preferred that described emptier also has:
4th feed tube, described one end of 4th feed tube is connected with the second liquid outlet of described heat pump, and the described 4th
The other end of feed tube is connected with described first import, is sequentially provided with the 4th valve, section in the pipeline of described 4th feed tube
Stream device, and described 4th valve is positioned between described second liquid outlet and described throttling arrangement;
5th muffler, one end of described 5th muffler is connected with described first outlet, described 5th muffler
The other end is connected with the second air return end of described heat pump;
Wherein, the pressure of described second liquid outlet is more than the pressure of described second air return end.
, quoted from the cold-producing medium of heat pump itself, structure is simpler for low-temperature receiver.Refrigerant liquid is drawn from the second liquid outlet and is entered
First passage absorption heat is changed into refrigerant gas and returns to the second air return end it is ensured that the total amount of cold-producing medium does not reduce.Second goes out liquid
When end is located at the high-pressure side of heat pump, the second air return end can be located at medium voltage side or the low-pressure side of heat pump, and the second liquid outlet is located at heat pump
During medium voltage side, the second air return end can be located at the low-pressure side of heat pump it is ensured that the circulating direction of low-temperature receiver meets the requirements.Throttling arrangement is used for
Control the flow of cold-producing medium.
It is preferred that described 4th valve is electromagnetic valve.
Above-mentioned electromagnetic valve is easy to automatically control.
On the basis of meeting common sense in the field, above-mentioned each optimum condition, can combination in any, obtain final product this utility model each relatively
Good example.
Positive effect of the present utility model is:
The disclosed emptier for heat pump of this utility model, can smoothly discharge the air leaking into heat pump, simultaneously cold
The solidifying refrigerant gas being blended in the air to be discharged, and make condensed refrigerant liquid be back to heat pump, again participate in
The refrigerant cycle of heat pump is it is ensured that cold-producing medium total amount is constant, it is to avoid heat pump disorderly closedown, ensures its safe operation.
Specific embodiment
Name a preferred embodiment, and combine accompanying drawing to become apparent from intactly illustrating this utility model.
As shown in figure 1, a kind of emptier for heat pump.Described emptier has collection pneumatic module 100, first exhaust
Pipe 210, second exhaust pipe 220, the 3rd discharging tube 230.It is provided simultaneously with the 4th feed tube 240, the 5th muffler 250.
Collection pneumatic module 100 has first passage 110 and the second channel 120 being sheathed on first passage 110.First passage
110 two ends have the first import 111, first outlet 112.Second channel 120 has the second air inlet 121, the second gas outlet
122nd, the second liquid outlet 123.First import 111 is used for introducing low-temperature receiver, and first outlet 112 is used for discharging low-temperature receiver.
Integrate pneumatic module 100 realization as heat exchange function.In the present embodiment, integrate pneumatic module 100 as case tube heat exchanger, first leads to
Road 110 is tube side passage, and second channel 120 is shell side passageway.In another embodiment, alternatively, collection pneumatic module 100 can
For double-tube heat exchanger, then first passage 110 is inner pipe passway, second channel 120 is outer tube passage.Second gas outlet 122,
Two liquid outlets 123 are located at the two ends of second channel 120 respectively, and the second air inlet 121 is located at the second gas outlet 122, second goes out liquid
Between mouthfuls 123 and be located at the side of second channel 120.
One end of downtake pipe 210 is connected with the first exhaust end 310 of heat pump, the other end and the second air inlet 121
It is connected.And in the pipeline of downtake pipe 210, it is provided with the first valve 211.
One end of second exhaust pipe 220 is connected with the second gas outlet 122.The other end is connected with air.And second row
It is provided with the second valve 221 in the pipeline of trachea 220.
One end of 3rd discharging tube 230 is connected with the second liquid outlet 123, the first liquid returning end 320 of the other end and heat pump
It is connected.And the 3rd discharging tube 230 pipeline in be provided with the 3rd valve 231.
One end of 4th feed tube 240 is connected with the second liquid outlet 340 of heat pump, the other end and the first import 111 phase
Connection.It is sequentially provided with the 4th valve 241, throttling arrangement 242 in the pipeline of the 4th feed tube 240.And the 4th valve 241 be located at the
Between two liquid outlets 340 and throttling arrangement 242.
One end of 5th muffler 250 is connected with first outlet 112, and the other end is connected with the second air return end of heat pump
Logical.
First exhaust end 310, the first liquid returning end 320 are respectively positioned on high-pressure side such as condenser 300, the high-pressure reservoir of heat pump
Deng.In the present embodiment, first exhaust end 310 is located at the top of the condenser 300 of heat pump, and the first liquid returning end 320 is located at condenser
300 bottom.In another embodiment, alternatively, first exhaust end 310 can be located at the top of the reservoir of heat pump, the
One liquid returning end 320 can be located at the bottom of reservoir.
The pressure of the second liquid outlet 340 is more than the pressure of the second air return end.In the present embodiment, the second liquid outlet 340 is located at
The bottom of condenser 300.Second air return end can be connected with vaporizer or middle pressure Flash Type economizer.In another embodiment
In, alternatively, the second liquid outlet 340 can be located at the medium voltage side of heat pump, and now the second air return end is located at the low-pressure side of heat pump.
Condenser 300 is provided with pressure transducer 410, is provided with temperature sensor 420 at the water pipe 330 of condenser 300.Heat pump
Also there is controller 400, controller 400 is used for receiving pressure transducer 410, the signal of temperature sensor 420.
Above-mentioned first, second and third valve is electromagnetic valve.Controller 400 can control their switch.Similarly, the 4th valve
Door 241 is also electromagnetic valve.Controller 400 can control its switch.
During operation of heat pump, pressure transducer 410 detects the pressure within condenser 300, is scaled saturation temperature, and temperature passes
Sensor 420 detects the actual temperature of water outlet, and actual temperature is the degree of superheat with the difference of saturation temperature.Judge heat pump by the degree of superheat
Whether pressure is excessive, if pressure is excessive, controller 400 instructs first, second, third and fourth valve and opens.Air in condenser 300
Enter the second channel 120 of collection pneumatic module 100 with mixture of refrigerant gases through downtake pipe 210.Condenser 300 bottom simultaneously
The some refrigerant liquid in portion can enter the first passage 110 of collection pneumatic module 100 through the 4th feed tube 240, absorbs second channel
The heat of the mixture in 120, the cold-producing medium in first passage 110 is changed into gas and is delivered to the second air return end.Second channel 120
Refrigerant gas in interior mixture are condensed into refrigerant liquid, the bottom through 230 times liquid of the 3rd discharging tube to condenser 300
Portion.Uncondensable air is then smoothly discharged through second exhaust pipe 220.Pressure transducer 410 and temperature sensor 420 instruction heat pump
When interior pressure recovers normal, valve closing is instructed by controller 400, emptier is recovered to off working state.
Although the foregoing describing specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
These are merely illustrative of, and protection domain of the present utility model is defined by the appended claims.Those skilled in the art
Member, on the premise of without departing substantially from principle of the present utility model and essence, can make numerous variations or repair to these embodiments
Change, but these changes and modification each fall within protection domain of the present utility model.