A kind of low temperature double stage heat pump unit
[technical field]
The present invention relates to the technical fields of heat pump, the especially technical field of low temperature double stage heat pump unit.
[background technique]
In China Northeast Cold Area, outdoor temperature is minimum up to subzero more than 30 Dus or more, and conventional air source heat pump etc. is single
Grade device compressor cold-starting is difficult, and radiation loss is big, and greasy property is poor, is unable to satisfy under the lower environment of temperature existing
Heating demands.
[summary of the invention]
The object of the invention is to solve the problems of the prior art, a kind of low temperature double stage heat pump unit, Neng Gouke are proposed
The problems such as single level devices such as air source heat pump compressor low-temperature starting is difficult, and radiation loss is big, and greasy property is deteriorated, operation are taken
Permanent steady, comprehensive energy efficiency promotes 30% or more compared with air source heat pump, effectively improves the round-the-clock supportability of system.
To achieve the above object, the invention proposes a kind of low temperature double stage heat pump unit, including air source hot pump water heater,
Water source heat pump water heater, stratified water tanks, several water pipes, controller, several electric hole valves, the water source heat pump water heater first
Water inlet is equipped with water inlet water pipe, and the water inlet water pipe is connected to external source, and the water source heat pump water heater first goes out
Mouth of a river end is equipped with the second water pipe, and the other end of the second water pipe is connected to the inlet end of stratified water tanks, the layering
Water outlet of water tank end is equipped with third water pipe, and the other end of the third water pipe and the inlet end of air source hot pump water heater connect
Logical, the water outlet end of the air source hot pump water heater is equipped with the 4th water pipe, the other end and water source of the 4th water pipe
Second water inlet of Teat pump boiler is connected to, and the second water outlet of the water source heat pump water heater is additionally provided with return water water pipe, institute
First water inlet of the water source heat pump water heater stated is connected to the first water outlet, the second water inlet of the water source heat pump water heater
Mouth is connected to the second water outlet, and the other end of the return water water pipe is connected to heating of house pipeline, on the water inlet water pipe
Equipped with the first electric control valve, the third water pipe is equipped with the second electric hole valve, and the 4th water pipe is equipped with third electricity
Valve is controlled, the controller and air source hot pump water heater, water source heat pump water heater, several electric ports valve door controls connect.
Preferably, the 6th water pipe is equipped between the water inlet water pipe and third water pipe, the two of the 6th water pipe
End is connected to water inlet water pipe and third water pipe respectively, and the 6th water pipe is equipped with the 4th electric control valve.
Preferably, the 7th water pipe is equipped between the 4th water pipe and return water water pipe, the two of the 7th water pipe
End is connected to the 4th water pipe and return water water pipe respectively, and described is equipped with the 5th electric control valve.
Preferably, being additionally provided with several counterflow-preventing check (non-return) valves on the water pipe, second water pipe is equipped with first
Counterflow-preventing check (non-return) valve, water (flow) direction is that stratified water tanks are flowed to from water source heat pump water heater in second water pipe, and described returns
Water water pipe is equipped with the second counterflow-preventing check (non-return) valve, and water (flow) direction is to flow out from water source heat pump water heater in the return water water pipe.
Preferably, being equipped with the first temperature sense close to air source hot pump water heater water outlet on the 4th water pipe
Device is equipped with second temperature inductor, first temperature close to water source heat pump water heater water outlet on the return water water pipe
Inductor, second temperature inductor is spent to communicate to connect with controller data.
A kind of low temperature double stage heat pump unit of the present invention the utility model has the advantages that the present invention by by air source heat pump and water resource heat pump
It carries out that twin-stage is integrated, 15-25 DEG C of warm water is prepared using first order air source heat pump side, as the low level heat energy of water resource heat pump,
45 DEG C or more of hot water is prepared by water resource heat pump side again to heat supply heating in building, low-temperature air source heat pump part is especially suitable
For northern cold condition, it is ensured that equipment high efficiency operation runs perseverance surely, and comprehensive energy efficiency promotes 30% or more compared with air source heat pump,
Effectively improve the round-the-clock supportability of system.
Feature and advantage of the invention will be described in detail by embodiment combination attached drawing.
[Detailed description of the invention]
Fig. 1 is a kind of low temperature double stage heat pump set structure schematic diagram of the present invention.
In figure: 1- air source hot pump water heater, 2- water source heat pump water heater, 3- stratified water tanks, 4- water pipe, 5- controller,
6- electricity hole valve, 7- counterflow-preventing check (non-return) valve, 41- water inlet water pipe, the second water pipe of 42-, 43- third water pipe, 44- third water pipe, 45-
The electric hole valve of return water water pipe, the 6th water pipe of 46-, the 7th water pipe of 47-, the first electric control valve of 61-, 62- second, 63- third are automatically controlled
Valve, the first counterflow-preventing of 71- check (non-return) valve, the second counterflow-preventing of 72- check (non-return) valve, the first temperature inductor of 81-, 82- second temperature sense
Answer device.
[specific embodiment]
Refering to fig. 1, a kind of low temperature double stage heat pump unit of the present invention, including air source hot pump water heater 1, water resource heat pump hot water
Device 2, stratified water tanks 3, several water pipes 4, controller 5, several electric hole valves 6,2 first water inlet of water source heat pump water heater
Place is equipped with water inlet water pipe 41, and the water inlet water pipe 41 is connected to external source, and the water source heat pump water heater 2 first is discharged
Mouth end is equipped with the second water pipe 42, and the other end of second water pipe 42 is connected to the inlet end of stratified water tanks 3, point
Layer 3 water outlet end of water tank is equipped with third water pipe 43, the other end of the third water pipe 43 and air source hot pump water heater 1 into
The water outlet end of the connection of mouth of a river end, the air source hot pump water heater 1 is equipped with the 4th water pipe 44, the 4th water pipe 44
The other end is connected to the second water inlet of water source heat pump water heater 2, and the second water outlet of the water source heat pump water heater 2 is also set
There is return water water pipe 45, the first water inlet of the water source heat pump water heater 2 is connected to the first water outlet, the water resource heat pump
Second water inlet of water heater 2 is connected to the second water outlet, and the other end and heating of house pipeline of the return water water pipe 45 connect
Logical, the water inlet water pipe 41 is equipped with the first electric control valve 61, and the third water pipe 43 is equipped with the second electric hole valve 62,
4th water pipe 44 is equipped with third electric control valve 63, the controller 5 and air source hot pump water heater 1, water source heat
Pump water heater 2, several electric hole valves 6 control connection, and the 6th water pipe is equipped between the water inlet water pipe 41 and third water pipe 43
46, the both ends of the 6th water pipe 46 are connected to water inlet water pipe 41 and third water pipe 43 respectively, on the 6th water pipe 46
Equipped with the 4th electric control valve 64, between the 4th water pipe 44 and return water water pipe 45 be equipped with the 7th water pipe 47, the described the 7th
The both ends of water pipe 47 are connected to the 4th water pipe 44 and return water water pipe 45 respectively, described to be equipped with the 5th electric control valve 65, described
Water pipe 4 on be additionally provided with several counterflow-preventing check (non-return) valves 7, second water pipe 42 is equipped with the first counterflow-preventing check (non-return) valve 71, institute
Water (flow) direction is to flow to stratified water tanks 3 from water source heat pump water heater 2 in the second water pipe 42 stated, and is set on the return water water pipe 45
There is the second counterflow-preventing check (non-return) valve 72, water (flow) direction is to flow out from water source heat pump water heater 2 in the return water water pipe 45, described
The first temperature inductor 81, the return water water pipe are equipped with close to 1 water outlet of air source hot pump water heater on 4th water pipe 44
Second temperature inductor 82, first temperature inductor 81, the are equipped with close to 2 water outlet of water source heat pump water heater on 45
Two temperature inductors 82 are connect with 5 data communication of controller.
The course of work of the present invention:
A kind of low temperature double stage heat pump unit of the present invention during the work time, by the water inlet water pipe 41 and return water water pipe 45 of unit
It is connected to respectively with external source and heating of house pipeline is connected to, 15-25 DEG C of warm water is prepared by air source hot pump water heater 1,
As the low level heat energy of water resource heat pump, the hot water that recycles water source heat pump water heater 2 to be prepared into 45 DEG C or more in building to supplying
Heating, controller 5 can control each electricity by the temperature of the first temperature inductor 81 and second temperature inductor 82 of analysis
Hole valve 6 chooses whether to be heated across water source heat pump water heater 2, more energy efficient environmental protection.
Above-described embodiment is the description of the invention, is not limitation of the invention, after any pair of simple transformation of the present invention
Scheme all belong to the scope of protection of the present invention.