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CN-121986240-A - Preheating unit and clinical chemistry analyzer

CN121986240ACN 121986240 ACN121986240 ACN 121986240ACN-121986240-A

Abstract

A preheating unit (PH) (100) includes a heater (101), a PH body (102), a tubular flow path (103), a heat conductor (104), and a cover (105). The PH body (102) is heated by a heater (101). A tubular flow path (103) is arranged in the groove (102 a) and allows liquid flow. The groove (102 a) is formed by extending in the axial direction with respect to the outer peripheral surface (102 b). The heat conductor (104) includes a metal member covering the outer peripheral surface (102 b) and the tubular flow path (103). The cover includes an elastic member covering the thermal conductor (104), and the elastic member has a lower thermal conductivity than the thermal conductor (104).

Inventors

  • Mi Shan Zhi Zhi

Assignees

  • 古野电气株式会社

Dates

Publication Date
20260505
Application Date
20240925
Priority Date
20231019

Claims (11)

  1. 1. A preheating unit (PH) (100), comprising: a PH body (102) heated by the heater (101); a tubular flow path (103) arranged in the groove (102 a); A heat conductor (104) comprising a metal member covering the outer peripheral surface (102 b) and the tubular flow path (103), and A cover (105) comprising an elastic member covering the thermal conductor (104), Wherein the groove (102 a) is formed by extending in an axial direction with respect to the outer peripheral surface (102 b), Wherein the tubular flow path (103) allows a liquid flow, Wherein the cover (105) has a lower thermal conductivity than the thermal conductor (104).
  2. 2. The pre-heating unit (PH) (100) according to claim 1, wherein, The thermal conductors (104) are separate members that are separated along the axial direction.
  3. 3. The pre-heating unit (PH) (100) according to claim 1, wherein, The heat conductor (104) is a member having a slit (104 c) formed in the axial direction.
  4. 4. The pre-heating unit (PH) (100) according to claim 1, wherein, The heat conductor (104) is fixed by pressing the tubular flow path (103) to the bottom of the groove (102 a).
  5. 5. The pre-heating unit (PH) (100) according to claim 1, wherein, The cover (105) is made of a heat-shrinkable tube and fixes the heat conductor (104) in a heat-shrunk state.
  6. 6. The pre-heating unit (PH) (100) according to claim 1, wherein, The thermal conductor (104) has a smaller heat capacity than the cover (105).
  7. 7. The pre-heating unit (PH) (100) according to claim 1, wherein, The thermal conductor (104) has a smaller thermal capacity than the PH body (102).
  8. 8. The pre-heating unit (PH) 100 according to claim 1, wherein, The thermal conductor (104) comprises at least an iron member.
  9. 9. The pre-heating unit (PH) (100) according to claim 1, wherein, The heat conductor (104) includes a first metal portion (104 a) having a first heat capacity on an inner peripheral side and a second metal portion (104 b) having a second heat capacity larger than the first heat capacity on an outer peripheral side.
  10. 10. The preheating unit (PH) (100) according to claim 9, further comprising: And a fuse for cutting off power supply to the heater when the temperature of the heat conductor exceeds a threshold value.
  11. 11. An analyzer comprising a pre-heating unit (PH) (100) according to any one of claims 1 to 10.

Description

Preheating unit and clinical chemistry analyzer Technical Field The present disclosure relates to a pre-heating unit and a clinical chemistry analyzer. Background In general, in a chemical analyzer (e.g., a clinical chemical analyzer) for automatically analyzing a specific component present in a sample (e.g., a body fluid or a human tissue), it is necessary to maintain a cuvette at a constant temperature (e.g., 37 degrees celsius) during a reaction between the sample and a reagent in the cuvette. Therefore, in order to prevent the temperature of the cuvette from decreasing during automatic cleaning of the cuvette, a technique of heating a cleaning liquid (e.g., a detergent, a cleaning agent, or water) to a constant temperature using a preheating unit (see, for example, JP 6 255272 B2) is employed. JP 6 255272 B2 discloses a technique of fixing a tube having a resin cover from the outside of a tubular body embedded with a heater, while a tube through which a liquid flows is adhered to the outer periphery. Disclosure of Invention Technical problem However, in the above-described technique of the prior art, the heating efficiency of the liquid cannot be said to be high because the heat of the heater is taken away by the cover and the temperature of the liquid becomes difficult to rise. Accordingly, there is room for improvement in efficiently heating liquids. Accordingly, the present invention proposes a preheating unit and a clinical chemistry analyzer capable of effectively heating a liquid. Solution to the problem In order to solve the above-described problems, the preheating unit according to the present disclosure includes a heater, a PH body, a tubular flow path, a heat conductor, and a cover. The PH body is heated by the heater. The tubular flow path is disposed in the groove and allows liquid flow. The groove is formed by extending in the axial direction with respect to the outer peripheral surface. The heat conductor is constituted by a metal member covering the outer peripheral surface and the tubular flow path. The cover is constituted by an elastic member covering the heat conductor, and the elastic member has a lower thermal conductivity than the heat conductor. Therefore, the preheating unit can effectively heat the liquid. According to the present disclosure, the thermal conductors are separate members that are separated along the axial direction. Thus, the preheating unit can facilitate work when the heat conductor is mounted on the main body. According to the present disclosure, the heat conductor is a member having a slit formed along the axial direction. Therefore, the preheating unit can effectively heat the liquid. Further, according to the present disclosure, the thermal conductor is fixed by pressing the tubular flow path to the bottom of the groove. Therefore, the preheating unit can effectively heat the liquid. According to the present disclosure, the cover is made of a heat-shrinkable tube, and the heat conductor is fixed in a heat-shrunk state. Therefore, the preheating unit can effectively heat the liquid. Furthermore, according to the present disclosure, the thermal conductor has a smaller heat shrinkage capacity than the cover. Therefore, the preheating unit can effectively heat the liquid. Furthermore, according to the present disclosure, the thermal conductor has a smaller heat capacity than the PH body. Therefore, the preheating unit can effectively heat the liquid. According to the present disclosure, the thermal conductor comprises at least a ferrous member. Therefore, the preheating unit can effectively heat the liquid. The heat conductor according to the present disclosure is constituted by a first metal portion having a first heat capacity on an inner peripheral side and a second metal portion having a second heat capacity larger than the first heat capacity on an outer peripheral side. Therefore, the preheating unit can effectively heat the liquid. The preheating unit according to the present disclosure further comprises a fuse for cutting off power to the heater when the temperature of the heat conductor exceeds a threshold value. Therefore, the preheating unit can prevent the temperature of the liquid from becoming excessively high with high accuracy. According to the present disclosure, an analyzer is provided with the preheating unit having the above-described configuration. Thus, the analyzer can efficiently heat the liquid. Drawings Fig. 1 is a top view showing a schematic configuration of a clinical chemistry analyzer according to an embodiment. Fig. 2 is a perspective view of the preheating unit. Fig. 3 is an exploded perspective view of the preheating unit. Fig. 4 is a sectional view of the preheating unit. Fig. 5 is an end view of the preheating unit. Fig. 6 is a diagram of a configuration of a thermal conductor. Fig. 7 is an illustration of another configuration of a thermal conductor. Detailed Description Hereinafter, illustrative embodiments of the invention