Heat pump air conditioner
Technical field
The utility model belongs to the equipment that utilizes of air energy and water energy, specifically, relates in particular to a kind of heat pump air conditioner.
Background technology
Air-cooled heat pump air-conditioning system and water cooling heat pump air-conditioning system are all according to contrary Carnot cycle principle, and heat absorption working medium absorbs heat energy from low-temperature heat source, emit heat in high temperature heat source, by continuous heat absorption, heat release circulation, reach the purpose of cooling and warming.
At present, Chang Yong air-conditioning generally is made of compressor, condenser, evaporimeter, expansion valve.Air-cooled heat pump (air source heat pump) is when freezing summer, and the heat energy of heat absorption working medium absorption system backwater descends water temperature in the evaporimeter, thereby reaches the purpose of refrigeration; The heat energy that heat absorption working medium absorbs discharges in condenser and exchanges gives outdoor air.Working medium and system water generation heat exchange in evaporimeter; Working medium and outside air generation heat exchange in condenser.Generally speaking, evaporimeter is to be made of shell-and-tube or plate type heat exchanger; Condenser then is to be made of the metal fin fan coil.
The evaporimeter and the condenser of water cooling heat pump (water resource heat pump) are structurally in full accord, constitute by shell-and-tube or plate type heat exchanger.
The defective of air-cooled heat pump (air source heat pump):
When freezing summer, indoor heat energy is distributed to outdoor air by condenser, the heat energy that indoor heat energy and compressor power consumption transform, all from condenser, distribute to outdoor air, heat energy is not used effectively, if the user needs health hot water, must obtain through other approach, as solar water heater, electric heater etc.
The defective of water cooling heat pump (water resource heat pump):
When freezing summer, though indoor heat energy can be converted into health hot water by condenser, but system must dispose cooling tower (water resource heat pump must have water lift well and inverted well) comes the stability of assurance system in process of refrigerastion, thereby has limited the scope of application of water cooling heat pump (or water resource heat pump).
Summary of the invention
The purpose of this utility model is to avoid above-mentioned weak point of the prior art and a kind of heat pump air conditioner that fully effectively utilizes the air energy and produce hot water in refrigeration simultaneously is provided.
The utility model is achieved through the following technical solutions: a kind of heat pump air conditioner comprises compressor, evaporimeter, expansion valve; Described heat pump air conditioner comprises two condensers at least, and one of described condenser is the air heat exchanger between heat-carrying working medium and the air, and it two is water-to-water heat exchangers between heat-carrying working medium and the water.
Constitute the loop with compressor, evaporimeter, expansion valve after air heat exchanger and water-to-water heat exchanger can be connected in parallel by pipeline, pipeline is provided with control valve; Also can be to be connected in series between air heat exchanger and the water-to-water heat exchanger; The pipeline of water-to-water heat exchanger can be connected with water tank, and water tank is provided with water inlet and delivery port.Water tank can be an attemperater.
Water-to-water heat exchanger preferably adopts the shell-and-tube plate type heat exchanger, and air heat exchanger preferably adopts the metal fin fan coil pipe structure; Air heat exchanger preferably adopts the design standard design of ultra-low temperature air source heat pump.
The utility model compared with prior art has following remarkable technique effect:
Summer handling characteristics
The heat absorbing end of heat pump has played the purpose of air conditioner refrigerating, the heat energy that release end of heat is emitted is made up of two parts, a part is the heat energy from heat absorbing end, a part is the heat energy that compressor power consumption acting is produced, this two-part heat energy is all effectively utilized and is converted into hot water, and the Energy Efficiency Ratio (cop value) of unit refrigeration can reach 1: 5, and the Energy Efficiency Ratio that unit heats (cop value) can reach 1: 6, total Energy Efficiency Ratio all is utilized owing to cold and hot, so can reach 1: 11.
Winter handling characteristics
The air heat exchanger of unit adopts the metal fin heat exchanger to press the design standard design of ultra-low temperature air source heat pump, thereby guaranteed the requirement that unit heats in low temperature environment.When unit is opened air heat exchanger, can be used as air source heat pump and use; When unit is opened water-to-water heat exchanger, can be used as water resource heat pump and use.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is that the utility model is worked as air heat exchanger and the water-to-water heat exchanger operation schematic diagram when in parallel.
Fig. 2 is the operation schematic diagram of the utility model when working as air heat exchanger and water heat exchange series connection.
Fig. 3 is the operation schematic diagram of the utility model when an air heat exchanger and two water-to-water heat exchangers parallel connections.
Fig. 4 is the operation schematic diagram of the utility model when working as air heat exchanger and two water-to-water heat exchangers of series connection are in parallel mutually.
Fig. 5 is the operation schematic diagram of the utility model when two air heat exchangers of connecting mutually and water-to-water heat exchanger parallel connection.
Among the figure: 1, compressor; 2, air heat exchanger; 3, water-to-water heat exchanger; 4, water tank; 5, evaporimeter; 6, expansion valve; 7, control valve; 8, control valve; 9, systemic circulation water inlet; 10, systemic circulation water out; 11, water inlet; 12, delivery port; 13, air intlet; 14, pipeline; 2 ', air heat exchanger; 3 ', water-to-water heat exchanger; 4 ', water tank; 8 ', control valve; 11 ', water inlet; 12 ', delivery port; 13 ', air intlet; 14 ', pipeline.
The specific embodiment
The utility model is described in further detail below by embodiment:
Embodiment 1
A kind of heat pump air conditioner comprises compressor 1, evaporimeter 5, condenser 2,3. expansion valve 6; The release end of heat of heat pump is made of two condensers, first air heat exchanger 2, and it two is water-to-water heat exchangers 3, and the pipeline 14 of water-to-water heat exchanger 3 is connected with water tank 4, and water tank 4 is provided with water inlet 11 and delivery port 12; Constitute loops with compressor 1, evaporimeter 5, expansion valve 6 after air heat exchanger 2 and water-to-water heat exchanger 3 are connected in parallel by pipeline, pipeline is provided with control valve 7 and control valve 8; Water tank 4 adopts attemperater; Water-to-water heat exchanger 3 adopts the shell-and-tube plate type heat exchanger, and air heat exchanger 2 adopts the metal fin fan coil pipe structure, and presses the design standard design of ultra-low temperature air source heat pump.
Summer the course of work:
Unit is introduced into heat-carrying working medium and heat recovery system work automatically, heat absorption working medium absorbs in evaporimeter 5 by air-conditioning system circulation water inlet 9 and enters heat energy with systemic circulation delivery port 10 backwater, water temperature is descended produce cold water, the compressed machine of heat absorption working medium 1 compression back discharges heat energy in water-to-water heat exchanger 3, the heat energy that discharges is absorbed by heat recovery system water, water temperature is risen become hot water, hot water circulates in water tank 4, thereby makes it reach the needed water temperature of health hot water.When reaching required water temperature, control valve 8 is closed automatically, and control valve 7 is opened automatically, makes heat-carrying working medium enter in the air heat exchanger 2 circulation automatically, the working medium of absorbing heat this moment be discharged into heat energy in the air and discharge outdoor, thereby guaranteed the normal operation of refrigeration system.When the user used hot water and add running water in water tank 4, water temperature can descend, when dropping to design temperature, control valve 8 is opened automatically, and control valve 7 is closed automatically, and heat absorption working medium enters water-to-water heat exchanger 3 heat releases, reheat the water in the water tank 4, make water temperature reach predetermined requirement.
Winter the course of work:
When winter, unit entered the heating duty, (1), air source heat pump duty: unit opening controlling valve 7, closed control valve 8, heat-carrying working medium enters air heat exchanger 2, absorb heat energy in air, compressor 1 compresses heat-carrying working medium in the opposite direction, and heat-carrying working medium discharges heat energy to evaporimeter 5 (this moment, evaporimeter 5 became condenser), the heat energy that discharges is absorbed by the backwater of air-conditioning system water temperature is risen, and heat exchanges to indoor by indoor heat exchanger; (2), water resource heat pump duty: unit opening controlling valve 8, closed control valve 7, heat-carrying working medium enters water-to-water heat exchanger 3, absorb the heat energy in the water, compressor 1 compresses heat-carrying working medium in the opposite direction, heat-carrying working medium discharges heat energy to evaporimeter 5 (this moment, evaporimeter 5 became condenser), and the heat energy of release is absorbed by the backwater of air-conditioning system water temperature is risen, and heat exchanges to indoor by indoor heat exchanger; Thereby finished the overall process of heating.
During winter heating, the pipeline 14 of water-to-water heat exchanger 3 of the present utility model can be directly be connected with water source such as reservoir, river, underground water etc., need not use water tank, thereby can directly obtain energy from the water source.
Embodiment 2
Air heat exchanger 2 and water-to-water heat exchanger 3 are the series connection form, need not to use control valve 7 and control valve 8.When working summer, air heat exchanger 2 and water-to-water heat exchanger 3 respectively system's liberated heat is exchanged in the air and the water of water tank in; Winter, air heat exchanger 2 and water-to-water heat exchanger 3 both can be worked simultaneously when working, and also can use one of them to carry out work.
Embodiment 3
Be connected in parallel with an air heat exchanger 2 again after water-to-water heat exchanger 3 and the water-to-water heat exchanger 3 ' parallel connection, water-to-water heat exchanger 3 and water-to-water heat exchanger 3 ' respectively by control valve 8, control valve 8 ' control.This product is adapted at two situations that have difference to require to the hot water temperature in summer, as bathroom and swimming pool.
Embodiment 4
Be connected in parallel with an air heat exchanger 2 again after water-to-water heat exchanger 3 and water-to-water heat exchanger 3 ' series connection.This product is adapted at two of summers the hot water temperature being required identical situation, as two bathrooms.
Embodiment 5
Two the mutually air heat exchanger 2, air heat exchanger 2 of series connection ' and water-to-water heat exchanger parallel connections.When warming oneself in the winter time, can strengthen this product utilization to air heat energy.