Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of rational in infrastructure, easy for installation, system is stable, efficiency is high, cost is more economical water source heat pump units is provided.
According to the technical scheme that the utility model provides, described pair of water temperature formula water source heat pump units comprises housing, it is characterized in that, is provided with in the described housing:
First system: first system comprises first compressor, first four-way change-over valve, main heat exchanger, first reservoir, first expansion valve and first auxiliary heat exchanger; The outlet of first compressor utilizes pipeline to be connected with first import of first four-way change-over valve, first outlet of first four-way change-over valve utilizes pipeline to be connected with first import of main heat exchanger, first outlet of main heat exchanger utilizes pipeline to be connected with the import of first reservoir, the outlet of first reservoir utilizes pipeline to be connected with the import of first expansion valve, the outlet of first expansion valve links to each other with the import of first auxiliary heat exchanger again, the outlet of first auxiliary heat exchanger utilizes pipeline to be connected with second import of first four-way change-over valve, and second outlet of first four-way change-over valve utilizes pipeline to be connected with the import of first compressor;
Second system: second system comprises second compressor, second four-way change-over valve, main heat exchanger, second reservoir, second expansion valve, second auxiliary heat exchanger; The outlet of second compressor utilizes pipeline to be connected with first import of second four-way change-over valve, first outlet of second four-way change-over valve utilizes pipeline to be connected with second import of main heat exchanger, second outlet of main heat exchanger utilizes pipeline to be connected with the import of second reservoir, the outlet of second reservoir utilizes pipeline to be connected with the import of second expansion valve, the outlet of second expansion valve links to each other with the import of second auxiliary heat exchanger again, the outlet of second auxiliary heat exchanger utilizes pipeline to be connected with second import of second four-way change-over valve, and second outlet of second four-way change-over valve utilizes pipeline to be connected with the import of second compressor.
As further improvement of the utility model, also include gas-liquid separator in described second system, the import of gas-liquid separator is connected with second outlet of second four-way change-over valve, and the outlet of gas-liquid separator is connected with the import of second compressor.
As further improvement of the utility model, described main heat exchanger adopts plate type heat exchanger, main heat exchanger is the binary channels heat exchanger that includes first passage and second channel, and main heat exchanger is used for making the cold-producing medium of first system and second system and water source to carry out heat exchange.
As further improvement of the utility model, described first auxiliary heat exchanger and second auxiliary heat exchanger all adopt plate type heat exchanger, first auxiliary heat exchanger and second auxiliary heat exchanger are the single channel heat exchangers, and first auxiliary heat exchanger and second auxiliary heat exchanger are used to make cold-producing medium and load water to carry out heat exchange.
The utility model compared with prior art, advantage is: rational in infrastructure, easy for installation, system is stable, efficiency is high, cost is more economical, and cold water (12 ℃ with 18 ℃)/hot water (32 ℃ with 45 ℃) of two kinds of water temperatures can be provided for air-conditioning system, be user-friendly to.
The specific embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
As shown in the figure: the utility model mainly is made up of housing and first system and second system that are arranged in the housing.
As Fig. 1~shown in Figure 4, first system mainly is made up of first compressor 1, first four-way change-over valve 2, main heat exchanger 3, first reservoir 4, first expansion valve 5 and first auxiliary heat exchanger 6; The outlet of first compressor 1 utilizes pipeline to be connected with first import of first four-way change-over valve 2, first outlet of first four-way change-over valve 2 utilizes pipeline to be connected with first import of main heat exchanger 3, first outlet of main heat exchanger 3 utilizes pipeline to be connected with the import of first reservoir 4, the outlet of first reservoir 4 utilizes pipeline to be connected with the import of first expansion valve 5, the outlet of first expansion valve 5 links to each other with the import of first auxiliary heat exchanger 6 again, the outlet of first auxiliary heat exchanger 6 utilizes pipeline to be connected with second import of first four-way change-over valve 2, and second outlet of first four-way change-over valve 2 utilizes pipeline to be connected with the import of first compressor 1.
As Fig. 1~shown in Figure 4, second system mainly is made up of second compressor 7, second four-way change-over valve 8, main heat exchanger 3, second reservoir 9, second expansion valve 10, second auxiliary heat exchanger 11 and gas-liquid separator 12; The outlet of second compressor 7 utilizes pipeline to be connected with first import of second four-way change-over valve 8, first outlet of second four-way change-over valve 8 utilizes pipeline to be connected with second import of main heat exchanger 3, second outlet of main heat exchanger 3 utilizes pipeline to be connected with the import of second reservoir 9, the outlet of second reservoir 9 utilizes pipeline to be connected with the import of second expansion valve 10, the outlet of second expansion valve 10 links to each other with the import of second auxiliary heat exchanger 11 again, the outlet of second auxiliary heat exchanger 11 utilizes pipeline to be connected with second import of second four-way change-over valve 8, second outlet of second four-way change-over valve 8 utilizes pipeline to link to each other with the import of gas-liquid separator 12, and the outlet of gas-liquid separator 12 is connected with the import of second compressor 7.
Main heat exchanger 3 in the utility model, first auxiliary heat exchanger 6 and second auxiliary heat exchanger, the 11 preferred plate type heat exchangers that adopt, main heat exchanger 3 wherein is the binary channels heat exchangers that include first passage and second channel, and first auxiliary heat exchanger 6 and second auxiliary heat exchanger 11 are single channel heat exchangers.The effect of main heat exchanger 3 is to make cold-producing medium and water source in first system and second system carry out heat exchange; The effect of first auxiliary heat exchanger 6 and second auxiliary heat exchanger 11 is to make cold-producing medium and load water (for the water of user's use) carry out heat exchange.
First four-way change-over valve 2 in the utility model and second four-way change-over valve 8 adopt matured product of the prior art, and its effect in the utility model is identical with the effect in the common air-conditioning system.
Refrigeration work process of the present utility model and operation principle are as follows:
In first system:
1, the refrigerant vapour of low-temp low-pressure is compressed into the refrigerant vapour of HTHP through first compressor 1;
2, the refrigerant vapour of HTHP enters the first passage of main heat exchanger 3 via the first passage of first four-way change-over valve 2, cooling in main heat exchanger 3, is condensed into the refrigerant liquid of HTHP;
3, the refrigerant liquid of HTHP enters first expansion valve 5 through first reservoir 4 again, through becoming the refrigerant liquid of low-temp low-pressure behind first expansion valve 5;
4, the refrigerant liquid of low-temp low-pressure is arranged to first auxiliary heat exchanger 6 again, in first auxiliary heat exchanger 6, carry out heat exchange with the higher load water of temperature, the refrigerant liquid of low-temp low-pressure flashes to the refrigerant vapour of low-temp low-pressure, and the higher load water of simultaneous temperature also becomes 12 ℃ of lower cold water of temperature by 6 heat exchange of first heat exchanger;
5, the refrigerant vapour of low-temp low-pressure is got back in first compressor 1 by the second channel of first four-way change-over valve 2 again, realizes periodic duty.
In second system:
1, the refrigerant vapour of low-temp low-pressure is compressed into the refrigerant vapour of HTHP through second compressor 7;
2, the refrigerant vapour of HTHP enters the second channel of main heat exchanger 3 via the first passage of second four-way change-over valve 8, cooling in main heat exchanger 3, is condensed into the refrigerant liquid of HTHP;
3, the refrigerant liquid of HTHP enters second expansion valve 10 through second reservoir 9 again, through becoming the refrigerant liquid of low-temp low-pressure behind second expansion valve 10;
4, the refrigerant liquid of low-temp low-pressure is arranged to second auxiliary heat exchanger 11 again, in second auxiliary heat exchanger 11, carry out heat exchange with the higher load water of temperature, the refrigerant liquid of low-temp low-pressure flashes to the refrigerant vapour of low-temp low-pressure, and the higher load water of simultaneous temperature also becomes 18 ℃ of lower cold water of temperature by 11 heat exchange of second heat exchanger;
5, the refrigerant vapour of low-temp low-pressure enters in the gas-liquid separator 12 by the second channel of second four-way change-over valve 8 again, comes back in second compressor 7 via gas-liquid separator 12, realizes periodic duty.
Of the present utility modelly heat the course of work and operation principle is as follows:
In first system:
1, the refrigerant vapour of low-temp low-pressure is compressed into the refrigerant vapour of HTHP through first compressor 1;
2, the refrigerant vapour of HTHP enters first auxiliary heat exchanger 6 via the second channel of first four-way change-over valve 2, in first auxiliary heat exchanger 6, carry out heat exchange with the lower load water of temperature, the refrigerant liquid of HTHP cools off, is condensed into the refrigerant liquid of HTHP, and the load water that simultaneous temperature is lower also becomes 45 ℃ of higher hot water of temperature by 6 heat exchange of first heat exchanger;
3, the refrigerant liquid of HTHP enters first expansion valve 5 again, through becoming the refrigerant liquid of low-temp low-pressure behind first expansion valve 5;
4, the refrigerant liquid of low-temp low-pressure is arranged first passage to main heat exchanger 3 again via first reservoir 4, in main heat exchanger 3, flash to the steam of low-temp low-pressure, get back in first compressor 1 by the first passage of first four-way change-over valve 4 then, realize periodic duty.
In second system:
1, the refrigerant vapour of low-temp low-pressure is compressed into the refrigerant vapour of HTHP through second compressor 7;
2, the refrigerant vapour of HTHP enters second auxiliary heat exchanger 11 via the second channel of second four-way change-over valve 8, in second auxiliary heat exchanger 11, carry out heat exchange with the lower load water of temperature, the refrigerant liquid of HTHP cools off, is condensed into the refrigerant liquid of HTHP, and the load water that simultaneous temperature is lower also becomes 32 ℃ of higher hot water of temperature by 11 heat exchange of second auxiliary heat exchanger;
3, the refrigerant liquid of HTHP enters second expansion valve 10 again, through becoming the refrigerant liquid of low-temp low-pressure behind second expansion valve 10;
4, the refrigerant liquid of low-temp low-pressure is arranged second channel to main heat exchanger 3 again via second reservoir 9, in main heat exchanger 3, flash to the steam of low-temp low-pressure, first passage by second four-way change-over valve 8 enters into gas-liquid separator 12 then, come back in second compressor 7 via gas-liquid separator 12, realize periodic duty.