CN-121993916-A - Compression-injection heat pump

Abstract

The invention provides a compression-injection type heat pump, and belongs to the technical field of thermodynamics and heat pumps. The low temperature heat exchanger has circulating medium passage communicated with the compressor, the compressor has circulating medium passage communicated with the low pressure steam inlet of the ejector, the steam generator has working steam passage communicated with the high pressure steam inlet of the ejector, the ejector has medium pressure steam passage communicated with the heater, the heater has condensate pipeline communicated with the steam generator via booster pump, the heater has condensate pipeline communicated with the low temperature heat exchanger via throttle valve, the steam generator has high temperature heat medium passage communicated with outside, the heater has heated medium passage communicated with outside, and the low temperature heat exchanger has low temperature heat medium passage communicated with outside to form compression-injection heat pump.

Inventors

• LI HONGRUI
• LI HUAYU

Assignees

• 李华玉

Dates

Publication Date

20260508

Application Date

20260110

Priority Date

20250117

Claims (8)

1. 1. The compression-injection type heat pump mainly comprises a compressor, an ejector, a steam generator, a heat supplier, a booster pump, a throttle valve and a low-temperature heat exchanger, wherein a circulating working medium channel is arranged in the low-temperature heat exchanger (7) and is communicated with the compressor (1), the circulating working medium channel is also communicated with a low-pressure steam inlet of the ejector (2), the steam generator (3) is also provided with a working steam channel which is communicated with a high-pressure steam inlet of the ejector (2), the ejector (2) is also communicated with a medium-pressure steam channel and a heat supplier (4), the heat supplier (4) is also communicated with the steam generator (3) through the booster pump (5), the heat supplier (4) is also communicated with the low-temperature heat exchanger (7) through the throttle valve (6), the heat supplier (4) is also communicated with the outside through a heated medium channel, and the low-temperature heat exchanger (7) is also communicated with the outside through a low-temperature heat medium channel, so as to form the compression-injection type heat pump.
2. 2. The compression-injection type heat pump mainly comprises a compressor, an ejector, a heat supplier, a throttle valve and a low-temperature heat exchanger, wherein a low-temperature heat exchanger (7) is provided with a circulating working medium channel which is communicated with the compressor (1), the compressor (1) is also provided with a low-pressure steam inlet which is communicated with the ejector (2), a working steam channel which is communicated with the ejector (2) is arranged outside, the ejector (2) is also provided with a medium-pressure steam channel which is communicated with the heat supplier (4), the heat supplier (4) is also provided with a condensate pipeline which is communicated with the low-temperature heat exchanger (7) through the throttle valve (6), the heat supplier (4) is also provided with a heated medium channel which is communicated with the outside, and the low-temperature heat exchanger (7) is also provided with a low-temperature heat medium channel which is communicated with the outside, so as to form the compression-injection type heat pump.
3. 3. In the compression-injection heat pump according to claim 1 or claim 2, a regenerator (8) is added, a circulation working medium channel of the low-temperature heat exchanger (7) is communicated with the compressor (1) and is regulated to be communicated with the compressor (1) through the regenerator (8), a condensate pipe of the heat supplier (4) is communicated with the low-temperature heat exchanger (7) through a throttle valve (6), and a condensate pipe of the heat supplier (4) is communicated with the low-temperature heat exchanger (7) through the regenerator (8) and the throttle valve (6), so that the compression-injection heat pump is formed.
4. 4. In the compression-injection heat pump according to claim 1 or claim 2, a regenerator, an expander and a second heater are added, a low-pressure steam inlet of the ejector (2) communicated with a circulation working medium channel of the compressor (1) is adjusted to be divided into two paths after the ejector (2) communicated with the second heater (10) is arranged, the first path is communicated with the low-pressure steam inlet of the ejector (2) and the second path is communicated with the expander (9), the expander (9) is communicated with the regenerator (8) through an intermediate port after the circulation working medium channel is communicated with the compressor (1), a condensate pipe of the heat supplier (4) is communicated with the low-temperature heat exchanger (7) through a throttle valve (6), and condensate or wet steam pipe of the heat supplier (4) is communicated with the low-temperature heat exchanger (7) through the regenerator (8) and the throttle valve (6), and the second heat supplier (10) is also communicated with the heated medium channel to the outside, so as to form the compression-injection heat pump.
5. 5. In the compression-injection heat pump according to claim 1 or claim 2, a regenerator, an expander, a second heat supplier and a second regenerator are added, the communication between a low-temperature heat exchanger (7) and the compressor (1) is adjusted to be that the low-temperature heat exchanger (7) is provided with a circulating working medium channel, the circulating working medium channel is communicated with the compressor (1) through the second regenerator (11), the low-pressure steam inlet of the compressor (1) is adjusted to be that the compressor (1) is provided with a circulating working medium channel, the circulating working medium channel is communicated with the second heat supplier (10), the first path is communicated with the low-pressure steam inlet of the ejector (2) and the second path is communicated with the expander (9), the expander (9) is also communicated with the compressor (1) through an intermediate port, the heat supplier (4) is communicated with the low-temperature heat exchanger (7) through a throttle valve (6), the low-pressure steam inlet of the ejector (2) is adjusted to be that the compressor (4) is provided with or wet steam is communicated with the condensate heat supplier (8), the second heat supplier (6) and the low-temperature heat exchanger (7) through the throttle valve (7), and the heat pump is also communicated with an external medium through the heat supplier (10).
6. 6. In the compression-injection heat pump according to any one of claims 1 to 5, a two-phase expander (12) is added to replace the throttle valve (6), and the two-phase expander (12) is connected with the compressor (1) and transmits power to form the compression-injection heat pump.
7. 7. A compression-injection heat pump, wherein a nozzle (13) is added in place of a throttle valve (6), and a dual-energy compressor (14) is added in place of the compressor (1) in any one of claims 1 to 5, to form the compression-injection heat pump.
8. 8. In the compression-injection heat pump according to any one of claims 4 to 5, a nozzle (13) is added to replace a throttle valve (6), a dual-energy compressor (14) is added to replace a compressor (1), and an expansion speed increaser (15) is added to replace an expander (9) to form the compression-injection heat pump.

Description

Compression-injection heat pump Technical field: the invention belongs to the technical field of thermodynamics and heat pumps. The background technology is as follows: When human beings acquire low-temperature loads by using energy sources to realize efficient heat supply, different resource conditions and different user demands can be met, and proper technical measures are correspondingly required to achieve the purposes of simplifying the device, reducing the cost and rationalizing the performance index. The vapor compression heat pump technology taking the reverse Rankine cycle as the working principle has the advantages of realizing constant temperature heat absorption, and has the defects that when the heat supply requirement of higher parameters is required to be met or deep refrigeration is carried out, the boosting ratio of the required compressor is increased, which means that the manufacturing cost of the core component of the compressor is increased. In many cases, high-grade heat load is required in industrial production, and high-temperature associated heat is often generated, so that the industrial associated heat is utilized efficiently and with high value in the refrigeration/heating field, and the industrial associated heat has technical challenges. Based on the basic principle of simply, actively, safely and efficiently utilizing energy sources to perform refrigeration/heating, the invention provides a compression-injection type heat pump which has the advantages of technical integration, reasonable flow, simple structure, low manufacturing cost and reasonable performance index. The invention comprises the following steps: The main purpose of the invention is to provide a compression-injection type heat pump, and the specific summary of the invention is as follows: 1. The compression-injection heat pump mainly comprises a compressor, an ejector, a steam generator, a heat supplier, a booster pump, a throttle valve and a low-temperature heat exchanger, wherein the low-temperature heat exchanger is provided with a circulating working medium channel which is communicated with the compressor, the compressor is also provided with a circulating working medium channel which is communicated with a low-pressure steam inlet of the ejector, the steam generator is also provided with a working steam channel which is communicated with a high-pressure steam inlet of the ejector, the ejector is also provided with a medium-pressure steam channel which is communicated with the heat supplier, the heat supplier is also provided with a condensate pipeline which is communicated with the steam generator through the booster pump, the heat supplier is also provided with the condensate pipeline which is communicated with the low-temperature heat exchanger through the throttle valve, the steam generator is also provided with a high-temperature heat medium channel which is also communicated with the outside, and the low-temperature heat exchanger is also provided with a low-temperature medium channel which is communicated with the outside, so as to form the compression-injection heat pump. 2. The compression-injection heat pump mainly comprises a compressor, an ejector, a heat supplier, a throttle valve and a low-temperature heat exchanger, wherein the low-temperature heat exchanger is provided with a circulating working medium channel which is communicated with the compressor, the compressor is also provided with a circulating working medium channel which is communicated with a low-pressure steam inlet of the ejector, the outside is provided with a working steam channel which is communicated with a high-pressure steam inlet of the ejector, the ejector is also provided with a medium-pressure steam channel which is communicated with the heat supplier, the heat supplier is also provided with a condensate pipeline which is communicated with the low-temperature heat exchanger through the throttle valve, the heat supplier is also provided with a condensate pipeline which is communicated with the outside, the heat supplier is also provided with a heated medium channel which is communicated with the outside, and the low-temperature heat exchanger is also provided with a low-temperature medium channel which is communicated with the outside, so as to form the compression-injection heat pump. 3. The compression-injection heat pump according to claim 1 or 2 is characterized in that a regenerator is added, the low-temperature heat exchanger with a circulating medium channel is communicated with the compressor and adjusted to be communicated with the compressor through the regenerator, the heat supply device with a condensate pipeline is communicated with the low-temperature heat exchanger through a throttle valve and adjusted to be communicated with the low-temperature heat exchanger through the regenerator and the throttle valve, and the compression-injection heat pump is formed. 4. The compression-injection heat pump according