CN207763172U - Solid electric heat storage formula air-conditioning device - Google Patents

Abstract

A solid electric heat storage air conditioner, the technical points are: the thermal power system is composed of a solid electric heat storage boiler, a frequency conversion circulation fan, an absorption heat pump generator, a power supply and a control system; the heat absorption system consists of a condenser, an evaporator , absorber, heat exchanger, and circulation pump; several absorption heat pump generators with variable frequency circulation fans are arranged in parallel, and the absorption heat pump generator and the heat absorption system cavity are filled with a working medium composed of refrigerant and absorbent The absorption heat pump generator is set in the closed high-temperature hot air circulation channel of the solid electric heat storage boiler, and directly absorbs the heat energy of the high-temperature air through the frequency conversion fan set in the high-temperature air circulation channel. The heat pump generator installed in the high-temperature hot air circulation channel of the heat storage boiler directly absorbs the heat energy of the high-temperature air under the control of the frequency conversion fan, so that the absorption heat pump unit can obtain high-efficiency thermal power, which not only improves the energy efficiency ratio of electric energy conversion to heat energy, but also increases heat storage. Refrigeration function of electric boiler.

Description

Solid electric thermal storage air conditioner

technical field

The utility model belongs to the technical field of indoor air temperature adjustment, in particular to a solid electric thermal storage air conditioner which directly uses the hot air stored in the solid electric thermal storage boiler to drive the absorption heat pump.

Background technique

In recent years, more and more new energy power generation systems have emerged in my country, such as wind power stations and solar power stations, which are effective ways to improve air quality and reduce environmental pollution. The new energy power generation system has uncertain power generation capacity due to the natural laws of the size of the wind and the strength of the sun, and it cannot be synchronized with the power load. At present, in order to solve this problem, a variety of new technologies for electric energy storage have been studied on the load side, in which the excess electric energy is converted into thermal energy at 100°C to 700°C and stored in a solid electric heat storage boiler to provide users with hot water, saturated steam, Hot air is a more practical solution. One year ago, a five-star hotel shut down the coal-fired boiler due to environmental failure. The inventor used a solid electric heat storage boiler to provide saturated steam to the hotel's original lithium bromide unit for heating, which solved the problem of the hotel's winter heating and summer supply. cold problem. This solution is a clean and economical solution for users who have absorption air-conditioning equipment looking for a heat source, and adding a solid electric heat storage boiler heat source to match it. However, new users do not need to convert the high-temperature air heat source in the solid electric heat storage boiler into a saturated steam heat source to drive the absorption air conditioning equipment, which not only increases equipment investment but also wastes installation space. This scheme removes the steam heat exchange device of the electric heat storage boiler, replaces the heat exchange device of the electric heat storage boiler with an absorption heat pump, and realizes the effect that the electric heat storage boiler can not only heat but also cool.

Contents of the invention

The purpose of the utility model is to provide a solid electric thermal storage air conditioner capable of both heating and cooling. The absorption heat pump generator is set in the high-temperature hot air circulation channel of the electric heat storage boiler, and directly absorbs the heat energy of the high-temperature air under the control of the frequency conversion fan, so that the absorption heat pump unit can obtain high-efficiency thermal power, which can not only improve the energy efficiency ratio of electric energy conversion heat energy, It is also possible to increase the refrigeration function of the heat storage electric boiler.

The purpose of this utility model is achieved in this way: it includes a solid electric heat storage boiler, a thermal power system and a heat absorption system, and is characterized in that the thermal power system consists of a solid electric heat storage boiler, a frequency conversion circulating fan, and an absorption heat pump generator , working medium, power supply and control system; heat absorption system consists of condenser, evaporator, absorber, heat exchanger, circulation pump, working medium; several absorption heat pump generators with variable frequency circulation fans are set in parallel, the The pipeline of the generator is connected with the heat absorption system to form a working cycle; the cavity of the absorption heat pump generator and the heat absorption system is filled with a working medium composed of refrigerant and absorbent; the absorption heat pump generator is set in a solid electric storage In the closed high-temperature hot air circulation channel of the heating boiler, the heat energy of the high-temperature air is directly absorbed by the frequency conversion fan arranged in the high-temperature air circulation channel.

The working medium of the utility model is composed of refrigerant and absorbent; the refrigerant is like water; the absorbent is like lithium bromide and ammonia.

The frequency conversion circulating fan described in the utility model is the power to drive hot air circulation in the high-temperature air ring channel.

The solid electric heat storage boiler described in the utility model uses solid bricks made of silicate refractory material as the heat storage medium inside, and is a solid electric heat storage boiler capable of outputting hot air at 100°C to 700°C.

The power supply and control system described in the utility model is a component for connecting the power supply and controlling the working state of the solid electric heat storage boiler.

The absorption heat pump generator, evaporator, condenser, absorber, and heat exchanger described in the utility model are shell-and-tube heat exchangers made of metals that can withstand the corrosion of the working medium; the absorption heat pump generator, The evaporator, condenser, absorber, and heat exchanger are arranged according to the working conditions of the absorption heat pump.

The circulation pump described in the utility model is a special working medium circulation pump for an absorption heat pump unit.

The high-temperature hot air circulation channel described in the utility model is a closed-loop channel for completing heat energy exchange between the solid electric heat storage boiler and the absorption heat pump generator.

The beneficial effects of the utility model are: the heat source of the solid electric heat storage type air conditioner comes from the solid electric heat storage boiler, and generally a plurality of solid electric heat storage boilers are used in combination, and each boiler is distributed with multiple heat exchangers. In order to adapt to the characteristics of the heat output of the electric heat storage boiler, a multi-group absorption heat pump generator structure is adopted. Each absorption heat pump generator has an independent frequency conversion circulation fan, which can improve the utilization rate of heat energy, especially the absorption heat pump generator from Separated from the absorption heat pump unit, the length of the high-temperature air circulation channel is shortened, the resistance of the circulation channel is reduced, and the motor power of the frequency conversion fan is saved; the area of the outer surface is also reduced by shortening the length of the high-temperature air circulation channel, and the high-temperature air passes through the circulation channel The heat consumption is also reduced. The solid electric heat storage air conditioner expands the application range of the solid electric heat storage boiler and improves the energy efficiency ratio, and can be used as a building air conditioner; power plant cooling water heat recovery or a place where low-temperature waste heat needs to be utilized.

Description of drawings

Fig. 1 is a schematic structural diagram of the utility model;

Explanation of symbols of main parts in the drawings: 1. Solid electric heat storage boiler, 2. Frequency conversion circulating fan, 3. Power supply and control system, 4. Absorption heat pump generator, 5. Heat exchanger, 6. Absorber, 7 , Condenser, 8, Evaporator, 9, Circulation pump, 10, Circulation pump.

The invention will be further described in detail by examples below, but the following examples are only examples of the utility model, and do not represent the limited scope of protection of the utility model. The scope of protection of the utility model is defined in the claims prevail.

Detailed ways

Example 1

As shown in Figure 1, the thermal power system of this embodiment is composed of a solid electric heat storage boiler 1, a frequency conversion circulating fan 2, an absorption heat pump generator 4, a power supply and a control system 3 and a working medium; the heat absorption system consists of a condenser 7. Evaporator 8, absorber 6, heat exchanger 5, circulation pump 10, and working medium; three absorption heat pump generators with variable frequency circulation fan 2 are installed in parallel, and each absorption heat pump generator 4 is respectively Equipped with an independent frequency conversion circulating fan 2, the pipeline of the generator is connected with the heat absorption system to form a working cycle; the absorption heat pump generator 4 and the cavity of the heat absorption system are filled with a working medium composed of refrigerant and absorbent; The absorption heat pump generator 4 is set in the closed high-temperature hot air circulation channel of the solid electric heat storage boiler 1, and directly absorbs the heat energy of the high-temperature air through the frequency conversion fan set in the high-temperature air circulation channel. As shown by the arrow in FIG. 1 , each absorption heat pump generator 4 has an independent high-temperature hot air circulation channel. The working process is described below. After the installation of the solid electric heat storage air conditioner is completed, when in use, the control parameters are put into the power supply and control system 3, so that the solid electric heat storage boiler 1 completes the heat storage work, and the heat storage of each absorption heat pump generator 4 is controlled. The frequency conversion circulating fan 2 works, and sends the high-temperature air in the solid electric heat storage boiler 1 to each absorption heat pump generator 4 to heat the working medium, and the high-temperature refrigerant vapor generated by the absorption heat pump generator 4 is sent to the condenser 7, The heat energy is absorbed by the cooling water in the tube side of the condenser 7, so that the temperature of the cooling water rises to form heat output; the working medium cooled in the condenser 7 is sent to the evaporator 8 and then vaporized to further cool down, completing the cooling process of the heat pump, and at the same time The cold output is formed; the low-pressure cold steam formed by the evaporator 8 enters the absorber 6, and at the same time, the working medium after heat absorption is re-sent into the condenser 7 through the circulation pump 10; the low-pressure refrigerant entering the absorber 6 The steam and the absorbent solution form a dilute solution; the dilute solution in the absorber 6 is boosted by the circulation pump 9, and is sent to the generator after heat exchange with the high-temperature absorbent concentrated solution from the absorption heat pump generator 4 in the heat exchanger 5. The device 4 works in a reciprocating cycle to complete the heat exchange work process of the air conditioner.

Claims (7)

1. a kind of solid electric heat storage formula air-conditioning device, it includes solid electric heat storage boiler, thermal power system and heat absorption system, It is characterized in that：Thermal power system is by solid electric heat storage boiler, frequency conversion circulating fan, absorption heat pump generator, working media, Power supply and control system composition；Heat absorption system is by condenser, evaporator, absorber, heat exchanger, circulating pump, working media group At；Several absorption heat pump generators with frequency conversion circulating fan are arranged in parallel, pipeline and the heat absorption system of the generator It is connected to form working cycles；It is packed into absorption heat pump generator and heat absorption system cavity and is made of refrigerant, absorbent Working media；The absorption heat pump generator is arranged in the closed high-temperature hot air circulation canal of solid electric heat storage boiler It is interior, directly absorb high temperature air thermal energy by the way that the frequency conversion fan in high temperature air circulation canal is arranged.

2. solid electric heat storage formula air-conditioning device according to claim 1, it is characterised in that：The working media is by refrigerant It is constituted with absorbent：Refrigerant is water；Absorbent is lithium bromide or ammonia.

3. solid electric heat storage formula air-conditioning device according to claim 1, it is characterised in that：The solid electric heat storage boiler its Using solid brick made of silicate refractory material as heat-storage medium, the solid electricity that can export 100 DEG C~700 DEG C hot-airs stores for inside Heat boiler.

4. solid electric heat storage formula air-conditioning device according to claim 1, it is characterised in that：The power supply and control system It is that the power supply of solid electric heat storage boiler connects the component for drawing and controlling working condition.

5. solid electric heat storage formula air-conditioning device according to claim 1, it is characterised in that：The absorption heat pump occurs Device, evaporator, condenser, absorber, heat exchanger are being resistant to shell-and-tube heat exchanger made of working media corrosion metal.

6. solid electric heat storage formula air-conditioning device according to claim 1, it is characterised in that：Described

Circulating pump is that absorption type heat pump assembly special tool makees medium circulation pump.

7. solid electric heat storage formula air-conditioning device according to claim 1, it is characterised in that：The high-temperature hot air cycle Channel refers to the closed loop channel that thermal energy exchange is completed between solid electric heat storage boiler and absorption heat pump generator.