A device for instantly heating refrigerant water vapor

Abstract

A device for instantaneously heating refrigerant water vapor, characterized in that it comprises an evaporator (1), a steam storage cylinder (4), and a high-temperature heater (2) arranged between the evaporator and the steam storage cylinder; the steam storage cylinder is a cylindrical closed cylinder, a plurality of groups of steam storage cylinder electric heaters (5) are arranged around the inner wall of the steam storage cylinder, and a connecting port connecting the outlet of the high-temperature heater (2) and the inner cavity of the steam storage cylinder is arranged on the cylinder wall of the steam storage cylinder; a plurality of high-temperature electric heating plates (3) are arranged in the shell of the high-temperature heater (2), and a heating channel (10) of a trumpet-shaped structure is formed by the spacing between each two adjacent high-temperature electric heating plates, wherein the inlet end of the heating channel is connected to the evaporator (1), and the outlet end of the heating channel is connected to the steam storage cylinder (4).

Description

Technical Field

[0001] The invention relates to a device for instantaneously heating refrigerant water vapor, which can heat low-temperature water vapor into high-temperature water vapor in a very short time. Background Art

[0002] Lithium bromide absorption refrigerator uses water as refrigerant. In the evaporation process of its refrigeration cycle, the refrigerant water evaporates at low temperature under a vacuum environment. Since the specific volume of the refrigerant water vapor after evaporation is very large, in order to expand the unit volume refrigeration capacity of water vapor, the evaporated refrigerant water vapor flows to the absorber at a very high speed. Similarly, in order to handle the refrigerant water vapor flowing in at the same speed, it is necessary to heat the refrigerant water vapor instantly, so that the refrigerant water vapor increases its temperature instantly and shrinks to the corresponding specific volume at the same time. In order to implement instant heating of water vapor, the lithium bromide absorption refrigeration cycle uses a concentrated lithium bromide aqueous solution heated to a high temperature from the generator, which is sprayed from the top of the absorber into the entire space of the absorber in the form of fine particles. The refrigerant water vapor molecules flowing in at a high speed are fully and evenly mixed with the concentrated lithium bromide aqueous solution, and the lithium bromide aqueous solution heats the water vapor at a high temperature and absorbs the water vapor at the same time. The lithium bromide dilute aqueous solution that absorbs a large amount of refrigerant water vapor naturally falls to the bottom cooling water pool. The dilute lithium bromide aqueous solution is pressurized by the solution pump and sent to the generator. After being reheated by the generator, it evaporates again at a high temperature state into high-temperature steam and changes into condensed water in the condenser.

[0003] In order to ensure a complete refrigeration cycle, the lithium bromide aqueous solution is sent to the generator by absorption of the lithium bromide aqueous solution, and the phase is changed into refrigerant water. It needs to be heated again in the generator for secondary evaporation and absorb the heat equal to the refrigeration capacity again. The refrigeration efficiency is too low, and the COP is only 1, so it can only be used for waste heat refrigeration. Summary of the invention

[0004] The purpose of the present invention is to provide a device for instantaneously heating refrigerant water vapor without using lithium bromide aqueous solution to heat and absorb the refrigerant water vapor in view of the above-mentioned disadvantage of excessive energy consumption of the lithium bromide absorption refrigeration cycle. The present invention achieves the same effect as the absorber solution pump and generator in the lithium bromide absorption refrigeration cycle, that is, at the same mass flow rate, the refrigerant water vapor produced from the evaporator is heated to the same temperature as the high-temperature refrigerant vapor produced by the generator. That is, the temperature difference of heating is large and the time is short.

[0005] The purpose of the present invention can be achieved through the following technical measures.

[0006] The device for instantaneously heating refrigerant water vapor of the present invention comprises an evaporator, a steam cylinder, and a high-temperature heater arranged between the evaporator and the steam cylinder; the steam cylinder is a cylindrical closed cylinder, and a plurality of groups of steam cylinder electric heaters are arranged around the inner wall of the steam cylinder, and a connecting port connecting the outlet of the high-temperature heater and the inner cavity of the steam cylinder is arranged on the cylinder wall of the steam cylinder; a plurality of high-temperature electric heating plates are arranged in the shell of the high-temperature heater, and a heating channel with a trumpet-shaped structure is formed by the distance between each two adjacent high-temperature electric heating plates, wherein the inlet end of the heating channel is connected to the evaporator, and the outlet end of the heating channel is connected to the steam cylinder.

[0007] The high-temperature electric heating plate described in the present invention is composed of a vertically arranged U-shaped electric heating tube and an aluminum sheet wrapped around the U-shaped electric heating tube. The surface temperature is greater than 110°C, and the wavelength of infrared light radiation on the heater surface is in the range of 5.6 to 7.6 μm.

[0008] The multiple groups of steam cylinder electric heaters arranged in the steam cylinder of the present invention are wound-plate electric heaters. The heat energy emitted by the wound-plate electric heaters is used to keep the temperature in the steam cylinder at a set temperature, which is lower than the temperature of the high-temperature heating plate.

[0009] The inlet width of the trumpet-shaped heating channel formed by the distance between every two adjacent high-temperature electric heating plates is 30 to 60 mm, and the outlet width is 20 to 50 mm.

[0010] The internal volume of the steam storage cylinder is 30 to 80 times the volume of the heating channel composed of the high-temperature electric heating plate.

[0011] The working principle of the present invention is as follows:

[0012] The refrigerant water vapor produced by the evaporator passes through the high-temperature heater at high speed and receives high-temperature radiation in a narrow channel. Most of the refrigerant water vapor receives light radiation and enters the steam storage cylinder in an excited state. The steam storage cylinder is a temperature field with a set temperature and is in a static state. The kinetic energy of the high-speed flow of the refrigerant water vapor in this environment is converted into static pressure energy, and the refrigerant water vapor that continues to enter gradually increases its density. The water vapor in the steam storage cylinder will gradually transform to the saturated pressure and density corresponding to the temperature field.

[0013] More specifically: According to the physical properties of water vapor, the temperature of water vapor can only be increased by radiation heating. Since water vapor can only effectively receive radiation under a specific radiation wavelength, the temperature set by the high-temperature heating section heating source must be within the above-mentioned radiation wavelength range. The surface temperature of the heating plate used in the high-temperature heating section heating source of the present invention is 110℃~130℃, and its wavelength is between the range of .

[0014] The spacing between the heating plates is only a few centimeters wide. Therefore, although the refrigerant water vapor flow rate is very high, its density is very small, so its mass flow rate is not high. Therefore, the refrigerant water vapor can fully receive the light wave radiation through the high-temperature heater and become excited.

[0015] The outlet end of the high-temperature heater of the present invention is directly connected to the steam cylinder. Comparing the inner cavity volumes of the two, the volume of the latter is seventy to eighty times that of the former. At the same time, the heating source in the steam cylinder is stabilized at a set temperature, so the refrigerant water vapor has sufficient time to convert the original kinetic energy into pressure energy in the steam cylinder and change the molecular energy structure at the same time.

[0016] The beneficial effects of the present invention are as follows:

[0017] The energy structure of water vapor molecules is composed of kinetic energy and latent heat of vaporization. When the temperature rises, the kinetic energy of the molecules increases, while the latent heat of vaporization decreases. At the same time, at any temperature where water vapor exists, the kinetic energy and latent heat of vaporization have a certain amount. That is to say, when the refrigerant water vapor in the present invention is heated from the evaporation temperature to the set high temperature, as long as the molecular kinetic energy of the refrigerant water vapor produced from the evaporator reaches the molecular kinetic energy of the set temperature, the water vapor molecules in a specific hot pressure temperature field not only do not need external heat, but also release part of the latent heat of vaporization to reach the set high temperature. Therefore, the present invention fundamentally solves the disadvantage of high energy consumption of lithium bromide absorption refrigerators. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a working principle diagram of the present invention.

[0019] Serial numbers in the figure: 1 evaporator, 2 high temperature heater, 3 high temperature electric heating plate, 4 steam storage cylinder, 5 steam storage cylinder electric heater, 6 constant pressure steam transmission valve.

[0020] Figure 2 This is a diagram of the internal structure of a high temperature heater.

[0021] Figure 3 yes Figure 2 Sectional view of Figure 1-1 (rotated 90° to the left).

[0022] Serial numbers in the figure: 7 electric heating tube, 8 electric heating tube wrapped with aluminum sheet, 9 electric heating tube terminal, 10 heating channel (composed of high-temperature heating sheet).

[0023] Figure 4 It is a structural diagram of the steam cylinder electric heater.

[0024] Serial numbers in the figure: 11: wound-plate electric heater, 12: electric heating terminal. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with embodiments (attached drawings).

[0026] like Figure 1 As shown, the device for instantaneously heating refrigerant water vapor of the present invention comprises an evaporator 1, a steam cylinder 4, and a high-temperature heater 2 arranged between the evaporator 1 and the steam cylinder 4; the steam cylinder 4 is a cylindrical closed cylinder, and a plurality of groups of steam cylinder electric heaters 5 are arranged around the inner wall of the steam cylinder 4, and a connecting port connecting the outlet of the high-temperature heater 2 and the inner cavity of the steam cylinder is arranged on the cylinder wall of the steam cylinder; a plurality of high-temperature electric heating plates 3 are arranged in the shell of the high-temperature heater 2, and a heating channel 10 of a trumpet-shaped structure is formed by the distance between each two adjacent high-temperature electric heating plates, wherein the inlet end of the heating channel is connected to the evaporator 1, and the outlet end of the heating channel is connected to the steam cylinder 4.

[0027] The high-temperature electric heating plate 3 described in the present invention is composed of a vertically arranged U-shaped electric heating tube 7 and an electric heating tube outer aluminum sheet 8 wrapped around the U-shaped electric heating tube. The surface temperature is greater than 110°C, and the wavelength of infrared light radiation on the heater surface is in the range of 5.6 to 7.6 μm.

[0028] The multiple groups of steam cylinder electric heaters 5 arranged in the steam cylinder 4 are plate-wound electric heaters 11; the heat energy emitted by the plate-wound electric heaters 11 is used to maintain the temperature in the steam cylinder at a set temperature, which is lower than the temperature of the high-temperature heating plate.

[0029] The internal volume of the steam storage cylinder 4 is 30 to 80 times the volume of the heating channel formed by the high temperature electric heating plate 3. The inlet width of the trumpet-shaped heating channel 10 formed by the spacing between each two adjacent high temperature point heating plates 3 is 30 to 60 mm, and the outlet width is 20 to 50 mm.

[0030] The working process of the present invention is as follows:

[0031] The high dynamic pressure refrigerant water vapor produced by the evaporator flows directly through the high temperature heater 2 at high speed, and after receiving heat radiation in the narrow channel formed by the high temperature heating plate 3, the volume entering the steam storage cylinder 4 is much larger than the volume of the high temperature heater channel. The kinetic energy of the refrigerant water vapor is immediately converted into static pressure energy, and a large amount of refrigerant water vapor enters the steam storage cylinder 4 one by one. The density and static pressure of the refrigerant water vapor gradually rise to the steam storage cylinder, maintaining the saturated density and static pressure values ​​corresponding to the set temperature of the temperature field.

[0032] The evaporator described in the present invention has been disclosed in Chinese Patent No. 202021604547.X, entitled "A Refrigeration Machine Evaporator Using Water as Refrigerant" and Chinese Patent No. 201920945013.4, entitled "A Hot Press Device for Organizing Directional Flow of Water Vapor".

Claims

1. A device for instantaneously heating refrigerant water vapor, characterized in that: It comprises an evaporator (1), a steam storage cylinder (4), and a high-temperature heater (2) arranged between the evaporator and the steam storage cylinder; the steam storage cylinder is a closed cylindrical cylinder, and a plurality of groups of steam storage cylinder electric heaters (5) are arranged around the inner wall of the steam storage cylinder, and a connecting port connecting the outlet of the high-temperature heater (2) and the inner cavity of the steam storage cylinder is arranged on the cylinder wall of the steam storage cylinder; a plurality of high-temperature electric heating plates (3) are arranged in the shell of the high-temperature heater (2), and a heating channel (10) of a trumpet-shaped structure is formed by the spacing between each two adjacent high-temperature electric heating plates, wherein the inlet end of the heating channel is connected to the evaporator (1), and the outlet end of the heating channel is connected to the storage cylinder. The steam storage cylinder (4) is connected; the high-temperature electric heating plate (3) is composed of a vertically arranged U-shaped electric heating tube (7) and an electric heating tube outer aluminum sheet (8) wrapped outside the U-shaped electric heating tube, the surface temperature is greater than 110°C, and the wavelength of infrared light radiation on the heater surface is in the range of 5.6 to 7.6 μm; the internal volume of the steam storage cylinder (4) is 30 to 80 times the volume of the heating channel composed of the high-temperature electric heating plate; the inlet end width of the trumpet-shaped heating channel (10) formed by the spacing between each two adjacent high-temperature point heating plates (3) is 30 to 60 mm, and the outlet end width is 20 to 50 mm.

2. The device for instantaneously heating refrigerant water vapor according to claim 1, characterized in that: The plurality of steam storage cylinder electric heaters (5) arranged in the steam storage cylinder (4) are wound-plate type electric heaters (11).

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