CN201218625Y - New constant temperature and humidity heat pump - Google Patents

Abstract

The utility model relates to a novel constant temperature and humidity heat pump comprising a refrigerant process and an air process. The air process comprises a blower, a regenerator and a heat exchanger; an air inlet is connected with the heat side of the regenerator through an air pipeline; an air pipeline extending out of the heat side of the regenerator is connected with an evaporator; an air pipeline extending out of the evaporator is connected with an air outlet; an air pipeline extending out of the regenerator is connected with the heat exchanger; and an air pipeline extending out of the heat exchanger is connected with the air outlet through the blower. In the utility model, the plate-fin regenerator is added in the air process, causing the temperature of the air entered in the evaporator to be reduced and the temperature of the air entered subsequently in the evaporator to be increased, thereby the energy is saved to a large extent. The utility model has the functions of air exchange and heat recovery in winter, dehumidification, constant temperature keeping, heat insulation, initial heating, ventilation, and the like, is compact in structure and occupies small area.

Description

New constant temperature and humidity heat pump

technical field

The utility model relates to the field of constant temperature and humidity equipment for swimming pools, in particular to a novel constant temperature and humidity heat pump.

Background technique

With the improvement of living standards, indoor swimming pools require cooling in summer, and constant temperature heating, heating and dehumidification of swimming pool water in winter to achieve a comfortable environment for indoor swimming pools. The traditional mode is to use the central air conditioner to cool, heat and dehumidify the indoor swimming pool in summer, and use boiler or electric heating to keep the temperature of the swimming pool water in winter. With the increasing shortage of energy, the operation cost is greatly increased, and the environmental protection and unsafety of boiler operation are factors, the traditional mode is gradually eliminated.

Most of the heat dissipation process of indoor swimming pools in winter is that the water on the surface of the swimming pool evaporates continuously due to the partial pressure difference of water vapor and takes away heat. Therefore, while dehumidification, the latent heat released during the condensation of water vapor can be recovered to heat the swimming pool water. This process is the reverse Carnot cycle of the heat pump. process, low operating costs and very environmentally friendly. The constant temperature and humidity equipment for swimming pools developed by foreign countries using this technology has been well applied. In recent years, some users in cities in the southern coastal areas of my country have adopted this kind of constant temperature and humidity equipment, and the operation effect is good. Swimming pool constant temperature and humidity equipment technology is mainly concentrated in the United States and European countries, and domestic users mainly use imported equipment. However, the current international (and domestic) constant temperature and humidity equipment has the following problems:

1) The constant temperature and humidity equipment adopts the principle of single cooling and dehumidification of the evaporator. Part of the cooling load of the evaporator is used to cool the indoor air to the dew point temperature, and part of the cooling load is used for the dehumidification process. Because the indoor environment is only 26-28°C and the relative humidity is only about 55%, most of the cooling load of all evaporators is used for air cooling process, and the dehumidification performance ratio (SMER) under rated working conditions is only 1.8kg.water/kw.h;

2) In winter, the waste heat of ventilation in the swimming pool space cannot be recycled, and the energy loss of ventilation is large.

3) The volume of the evaporator and condenser is large, and the unit is arranged horizontally, occupying a large area.

Utility model content

The purpose of this utility model is to solve the shortcomings of the above-mentioned swimming pool constant temperature and humidity equipment, and provide a new type of constant temperature that can improve the dehumidification performance, perform heat recovery on winter exhaust, save operating costs, compact design, and a small unit footprint. Constant humidity heat pump.

The utility model is achieved in the following way: the new constant temperature and humidity heat pump includes a refrigerant flow and an air flow, the air flow includes a fan, a heat exchanger and a heat exchanger, and the air inlet is connected to the hot side of the heat regenerator through an air duct , the air pipe from the hot side of the regenerator is connected to the evaporator, the air pipe from the evaporator is connected to the cold side of the regenerator, the air pipe from the cold side of the regenerator is connected to the heat exchanger, and the air pipe from the heat exchanger Connect with the air outlet through the fan.

The refrigerant process includes a summer cooling process and a winter cooling process, and the winter cooling process includes a compressor, a water condenser, a condenser, a liquid receiver, a filter, an expansion valve, an evaporator and a gas-liquid separator, The compressor is connected to the water condenser through the refrigerant pipeline, the water condenser is connected to the heat exchanger through the refrigerant pipeline, the heat exchanger is connected to the liquid receiver through the refrigerant pipeline, and the liquid receiver is connected to the filter through the refrigerant pipeline. The filter is connected to the expansion valve through the refrigerant pipeline, the expansion valve is connected to the evaporator through the refrigerant pipeline, the evaporator is connected to the gas-liquid separator through the refrigerant pipeline, and the gas-liquid separator is connected to the compressor through the refrigerant pipeline; The summer refrigeration process includes compressor, auxiliary condenser, liquid receiver, filter, expansion valve, evaporator and gas-liquid separator. The liquid receiver is connected to the liquid receiver, the liquid receiver is connected to the filter through the refrigerant pipeline, the filter is connected to the evaporator through the refrigerant pipeline, the evaporator is connected to the gas-liquid separator through the refrigerant pipeline, and the gas-liquid separator is connected to the compressor through the refrigerant pipeline. machine connection.

The regenerator can be a plate-fin regenerator, and the plate-fin regenerator is composed of partitions, fins, seals, and deflectors, and fins and deflectors are placed at intervals between adjacent partitions Interlayer, several interlayers are superimposed, brazed into a whole to form a plate bundle, with necessary head support.

The fins are straight fins, serrated fins, porous fins or corrugated fins.

The air flow pattern of the plate-fin regenerator is cross-flow or counter-flow.

The evaporator is a finned tube evaporator, and the finned tube evaporator is composed of a base tube and fins, and the fins are installed on the base tube; the base tube can be a copper tube or an internally threaded copper tube; the fins It can be corrugated sheet, skylight or corrugated skylight that can be made of aluminum or copper.

The heat exchanger is a finned tube heat exchanger. The finned tube heat exchanger is composed of a base tube and fins, and the fins are installed on the base tube; the base tube can be a copper tube or an internally threaded copper tube. ; The fins can be corrugated sheets made of aluminum or copper, skylight or corrugated skylight.

The pipelines and equipment in the refrigerant process and the drying medium process are arranged in the bracket and the shell; a partition is arranged between the heat exchanger and the regenerator, and a water receiving tray is arranged under the regenerator and the evaporator. A condensate discharge pipe is arranged under the water tray; the auxiliary condenser and the compressor are installed on the base of the bracket and the shell; an instrument panel and a control box are set on the bracket and the shell.

In the air flow of the utility model, a plate-fin type regenerator is added, so that the temperature of the air entering the evaporator is lowered and then the temperature of the air entering the condenser is raised, which greatly saves energy consumption; it is equipped with winter ventilation heat recovery, saving operation Cost; it also has dehumidification, constant temperature, heating, initial heating, ventilation and other functions, with comprehensive functions; the dehumidification performance ratio under rated working conditions is more than 40% higher than that of existing swimming pool constant temperature and humidity equipment; the overall structure design is compact and occupies an area Small.

Description of drawings

Figure 1 is a schematic diagram of the assembly structure of the new constant temperature and humidity heat pump of the present invention;

Fig. 2 is a left view assembly structure diagram of the new constant temperature and humidity heat pump of the utility model;

Fig. 3 is the working principle diagram of the new constant temperature and humidity heat pump of the utility model;

Fig. 4 is a structural schematic diagram of the plate-fin regenerator of the new constant temperature and humidity heat pump of the present invention;

Fig. 5 is a schematic diagram of the cross-flow air flow of the plate-fin regenerator of the new constant temperature and humidity heat pump of the utility model;

Fig. 6 is a schematic diagram of countercurrent air flow in the plate-fin regenerator of the new constant temperature and humidity heat pump of the present invention.

Wherein, the arrows in the figure indicate the flow direction of refrigerant or air.

Detailed ways

The following is a detailed description of the new constant temperature and humidity heat pump of the present invention in conjunction with the accompanying drawings and specific embodiments.

The novel constant temperature and humidity heat pump, as shown in Figure 3, includes a refrigerant process and an air process, the refrigerant process includes a summer cooling process and a winter cooling process, and the winter cooling process includes a compressor 12, a water condenser 10, a heat pump Exchanger 3, liquid receiver 17, filter 18, expansion valve 19, evaporator 8 and gas-liquid separator 20, compressor 12 is connected with water condenser 10 through refrigerant copper pipe, and water condenser 10 is connected through refrigerant copper pipe It is connected to the heat exchanger 3, the heat exchanger 3 is connected to the liquid receiver 17 through the refrigerant copper pipe, the liquid receiver 17 is connected to the filter 18 through the refrigerant copper pipe, and the filter 18 is connected to the expansion valve 19 through the refrigerant copper pipe connection, the expansion valve 19 is connected to the evaporator 8 through the refrigerant copper pipe, the evaporator 8 is connected to the gas-liquid separator 20 through the refrigerant copper pipe, and the gas-liquid separator 20 is connected to the compressor 12 through the refrigerant copper pipe to form a refrigeration cycle. The summer refrigeration process includes a compressor 12, an auxiliary condenser 16, a liquid receiver 17, a filter 18, an expansion valve 19, an evaporator 8, and a gas-liquid separator 20. The compressor 12 is connected to the auxiliary condenser 16 through a refrigerant copper pipe. The auxiliary condenser 16 is connected to the liquid receiver 17 through the refrigerant copper pipe, the liquid receiver 17 is connected to the filter 18 through the refrigerant copper pipe, the filter 18 is connected to the expansion valve 19 through the refrigerant copper pipe, and the expansion valve 19 passes through The refrigerant copper tube is connected to the evaporator 8, the evaporator 8 is connected to the gas-liquid separator 20 through the refrigerant copper tube, and the gas-liquid separator 20 is connected to the compressor 12 through the refrigerant copper tube to form a refrigeration cycle. In order to enhance the heat exchange effect, an auxiliary fan 15 is arranged beside the auxiliary condenser 16 . The water condenser 10 is provided with a swimming pool circulating water interface C. The evaporator 8 is provided with a condensate drain D.

The compressor 13 can adopt a fully enclosed scroll compressor, a piston compressor, a screw compressor; a scroll compressor is preferred for a small unit. The accumulator 17 can be a high-pressure accumulator. The expansion valve 19 can be a thermodynamic or electronic expansion valve, which should be selected according to different refrigerants. The filter 18 is a special filter for liquid refrigerant. The purpose of the gas-liquid separator 20 is to prevent the compressor 13 from being damaged by liquid hammering caused by the intake air of the compressor. Refrigerant pipes are preferably made of high-quality copper pipes. Refrigerants can be inorganic compounds, fluoride pure working fluids, hydrocarbons or mixed refrigerants, preferably R22 or R407C.

The specific workflow of the refrigerant process is as follows:

Refrigeration process in winter: Compressor 13 sends high-temperature, high-pressure superheated gas refrigerant into water condenser 10 and heat exchanger 3. After heat exchange, the refrigerant becomes saturated or supercooled liquid, and passes through liquid receiver 17, filter 18 and expansion After the valve 19, the refrigerant becomes a low-pressure gas-liquid mixture, and after being dehumidified by the evaporator 8, a low-temperature, low-pressure superheated gas refrigerant is obtained through the gas-liquid separator 20, and then enters the compressor 13 to become a high-temperature, high-pressure superheated gas. Such a cycle of heat exchange.

Summer refrigeration process: compressor 13 sends high-temperature, high-pressure superheated gas refrigerant into auxiliary condenser 16 for heat exchange, and the refrigerant becomes saturated or supercooled liquid, and after passing through the liquid receiver, filter and expansion valve, the refrigerant becomes low-pressure The gas and liquid mixture enters the evaporator 8 for refrigeration, and after passing through the gas-liquid separator 20, the refrigerant becomes a low-temperature and low-pressure superheated gas, and then passes through the compressor 13 to become a high-temperature and high-pressure superheated gas.

The air flow includes fan 2, regenerator 5 and heat exchanger 3, the air duct of air inlet B is connected to the hot side of regenerator 5, the air duct coming out of the hot side of regenerator 5 is connected to evaporator 8, and evaporator 8 The air duct coming out is connected to the cold side of the regenerator 5, the air duct coming out of the cold side of the regenerator 5 is connected to the heat exchanger 3, and the air duct coming out of the heat exchanger 3 is connected to the air outlet A through the fan 2.

The working process of the air flow is as follows: the hot and humid air coming in from the air inlet B enters the plate-fin regenerator through the hot side of the plate-fin regenerator to cool down, then passes through the evaporator to further cool down, and then enters through the cold side of the plate-fin regenerator The plate-fin regenerator heats up the temperature, and then it is further heated to the hot air by the condenser and the auxiliary heater, and finally discharged from the air outlet A by the action of the fan.

As shown in FIG. 1 and FIG. 2 , the relevant pipelines and equipment of the refrigerant process and the air process are all arranged in the bracket and the shell 1 . Brackets and brackets in shell 1 should be made of profile steel, sheet metal processing or aluminum alloy profiles; the shell can be a composite thermal insulation board with thermal insulation performance, and the thickness of the thermal insulation layer is not less than 25mm, or it can be a composite board. The inner layer should have anti-corrosion performance Good hot-dip galvanized steel, aluminum or stainless steel. A partition 4 is arranged between the heat exchanger 3 and the regenerator 5 , and a water receiving tray 11 is arranged under the regenerator 5 for containing the condensed water dripped from the regenerator 5 . A condensed water discharge pipe 12 is arranged under the water receiving tray 11 to discharge the water in the water receiving tray 11 . The separator 4 can be made of a galvanized sheet or an aluminum sheet with good corrosion resistance. The water receiving tray 11 can be made of corrosion-resistant aluminum plate or stainless steel plate; the condensed water discharge pipe 12 can be made of hot-dip galvanized steel pipe or stainless steel pipe, and is provided with a water trap. The bracket above the regenerator 5 and the shell 1 are provided with an electric air valve 6 to enhance the heat exchange effect. The actuator of electric damper 6 can be proportional control. The water condenser 10 and the compressor 13 are installed on the support and the base 14 of the shell 1 . The water condenser 10 can be a shell-and-tube type, a brazed plate type or a casing type, and its water flow should consider corrosion resistance. An instrument panel 7 is arranged on the bracket and the shell 1 to monitor the implementation status in the working process. The outlet temperature, indoor temperature, indoor humidity, swimming pool water temperature control, power indicator, compressor operation, fan operation, auxiliary fan operation, indicator setting operation, stop button, fan manual and automatic button fault indication and reset can be set on the dashboard 7 and other parameters are displayed. A control box 9 is provided in the bracket and the housing, and the control box 9 may be provided with control function modules including a compressor, a fan strong current control device, and dehumidification, refrigeration, heating, and ventilation. The fan 2 can be a three-phase external rotor fan, and one or two fans can be used according to specific needs; the fan 2 can be made of aluminum alloy.

As shown in FIG. 4 , the regenerator 5 is a plate-fin regenerator, that is, a plate-fin heat exchanger. The plate-fin regenerator is composed of partitions 22, fins 23, seals 21, and deflectors 24. Between adjacent partitions 22, fins 23 or deflectors 24 are placed at intervals to form an interlayer, and the interlayers are stacked. , Brazed into a whole to form a bundle, with the necessary head 21 support. The fins 23 can be straight fins, serrated fins, perforated fins, corrugated fins. The air flow pattern has cross flow as shown in Figure 5; or counter flow and other forms, as shown in Figure 6.

The evaporator 8 is a finned tube evaporator. The finned tube evaporator consists of a base tube and fins, and the fins are installed on the base tube; the base tube is made of copper smooth tube or internally threaded copper tube; the fins are made of aluminum or copper corrugated sheet, skylight or corrugated Skylight style.

The heat exchanger 3 is a finned tube heat exchanger; the finned tube heat exchanger is composed of a base tube and fins, and the fins are installed on the base tube; the base tube is made of copper smooth tube or internally threaded copper tube; Aluminum or copper materials are corrugated sheets, skylights or corrugated skylights.

Claims (8)

1, novel constant-temperature constant humidity heat pump, comprise cold-producing medium flow process and air flow process, it is characterized in that: described air flow process comprises blower fan, regenerator and heat exchanger, air inlet is connected with the hot side of regenerator by the airduct road, the airduct road that the hot side of regenerator is come out is connected with evaporimeter, the airduct road that evaporimeter comes out is connected with the regenerator cold side, airduct road and heat exchanger that the regenerator cold side comes out, and the airduct road that heat exchanger comes out is connected with the air outlet pipeline through blower fan.

2, novel constant-temperature constant humidity heat pump as claimed in claim 1, it is characterized in that: described cold-producing medium flow process includes cooling flow and winter refrigeration flow process in summer, described winter refrigeration flow process comprises compressor, water condenser, heat exchanger, reservoir, filter, expansion valve, evaporimeter and gas-liquid separator, compressor is connected with water condenser by refrigerant tubing, water condenser is connected with heat exchanger, heat exchanger is connected with reservoir by refrigerant tubing, reservoir is connected with filter by refrigerant tubing, filter is connected with expansion valve by refrigerant tubing, expansion valve is connected with evaporimeter by refrigerant tubing, evaporimeter is connected with gas-liquid separator by refrigerant tubing, and gas-liquid separator is connected with compressor by refrigerant tubing; Described summer, cooling flow comprised compressor, auxiliary condenser, reservoir, filter, expansion valve, evaporimeter and gas-liquid separator, compressor is connected with auxiliary condenser by refrigerant tubing, auxiliary condenser is connected with reservoir by refrigerant tubing, reservoir is connected with filter by refrigerant tubing, filter is connected with expansion valve by refrigerant tubing, expansion valve is connected with evaporimeter by refrigerant tubing, evaporimeter is connected with gas-liquid separator by refrigerant tubing, and gas-liquid separator is connected with compressor by refrigerant tubing.

3, novel constant-temperature constant humidity heat pump as claimed in claim 1, it is characterized in that: described regenerator is the plate-fin regenerator, the plate-fin regenerator is made up of dividing plate, fin, strip of paper used for sealing, flow deflector, place fin and flow deflector between the adjacent separator at interval and form interlayer, some interlayers are stacked, soldering composing plate bundle in aggregates is equipped with necessary end socket and supports.

4, novel constant-temperature constant humidity heat pump as claimed in claim 3, it is characterized in that: described fin is plain fin, saw tooth fin, perforated fin or corrugated fin.

5, novel constant-temperature constant humidity heat pump as claimed in claim 4, it is characterized in that: the air flow problem of described plate-fin regenerator is forms such as distributary or adverse current.

6, novel constant-temperature constant humidity heat pump as claimed in claim 1 or 2, it is characterized in that: described evaporimeter is a finned tube evaporator.

7, novel constant-temperature constant humidity heat pump as claimed in claim 1 or 2, it is characterized in that: described heat exchanger is a fin-tube heat exchanger.

8, as claim 1,2,3,4 or 5 described novel constant-temperature constant humidity heat pumps, it is characterized in that: pipeline in described cold-producing medium flow process and the drying medium flow process and equipment are arranged in support and the shell; Be provided with dividing plate between heat exchanger and the regenerator, be provided with drip tray below regenerator and the evaporimeter, drip tray is arranged with the condensate water delivery pipe; Auxiliary condenser and compressor are installed on the base of support and shell; Support and shell are provided with instrument board and control cabinet.

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